v0.0.240

(cherry picked from commit c0443af63b)

_data/version.sh

@@ -21,6 +21,11 @@ if [ "$( git rev-parse --abbrev-ref HEAD )" != "master" ]; then
   exit 1
 fi
 
+echo ""
+echo -n "Insert optional commit message: "
+read commitMessage
+echo ""
+
 git pull --ff
 
 go get -u ./...
@@ -40,6 +45,11 @@ git add --verbose .
 
 msg="v${next_ver}"
 
+if [[ "$commitMessage" != "" ]]; then
+  msg="${msg} ${commitMessage}"
+fi
+
+
 if [ $# -gt 0 ]; then
   msg="$1"
 fi

bfcodegen/enum-generate.go

@@ -31,13 +31,13 @@ type EnumDef struct {
 	Values       []EnumDefVal
 }
 
-var rexPackage = rext.W(regexp.MustCompile("^package\\s+(?P<name>[A-Za-z0-9_]+)\\s*$"))
+var rexPackage = rext.W(regexp.MustCompile(`^package\s+(?P<name>[A-Za-z0-9_]+)\s*$`))
 
-var rexEnumDef = rext.W(regexp.MustCompile("^\\s*type\\s+(?P<name>[A-Za-z0-9_]+)\\s+(?P<type>[A-Za-z0-9_]+)\\s*//\\s*(@enum:type).*$"))
+var rexEnumDef = rext.W(regexp.MustCompile(`^\s*type\s+(?P<name>[A-Za-z0-9_]+)\s+(?P<type>[A-Za-z0-9_]+)\s*//\s*(@enum:type).*$`))
 
-var rexValueDef = rext.W(regexp.MustCompile("^\\s*(?P<name>[A-Za-z0-9_]+)\\s+(?P<type>[A-Za-z0-9_]+)\\s*=\\s*(?P<value>(\"[A-Za-z0-9_:]+\"|[0-9]+))\\s*(//(?P<descr>.*))?.*$"))
+var rexValueDef = rext.W(regexp.MustCompile(`^\s*(?P<name>[A-Za-z0-9_]+)\s+(?P<type>[A-Za-z0-9_]+)\s*=\s*(?P<value>("[A-Za-z0-9_:]+"|[0-9]+))\s*(//(?P<descr>.*))?.*$`))
 
-var rexChecksumConst = rext.W(regexp.MustCompile("const ChecksumGenerator = \"(?P<cs>[A-Za-z0-9_]*)\""))
+var rexChecksumConst = rext.W(regexp.MustCompile(`const ChecksumGenerator = "(?P<cs>[A-Za-z0-9_]*)"`))
 
 func GenerateEnumSpecs(sourceDir string, destFile string) error {
 
@@ -209,36 +209,10 @@ func fmtOutput(cs string, enums []EnumDef, pkgname string) string {
 	str += "\n"
 
 	str += "import \"gogs.mikescher.com/BlackForestBytes/goext/langext\"" + "\n"
+	str += "import \"gogs.mikescher.com/BlackForestBytes/goext/enums\"" + "\n"
 	str += "\n"
 
-	str += "const ChecksumGenerator = \"" + cs + "\"" + "\n"
+	str += "const ChecksumGenerator = \"" + cs + "\" // GoExtVersion: " + goext.GoextVersion + "\n"
-	str += "\n"
-
-	str += "type Enum interface {" + "\n"
-	str += "    Valid() bool" + "\n"
-	str += "    ValuesAny() []any" + "\n"
-	str += "    ValuesMeta() []EnumMetaValue" + "\n"
-	str += "    VarName() string" + "\n"
-	str += "}" + "\n"
-	str += "" + "\n"
-
-	str += "type StringEnum interface {" + "\n"
-	str += "    Enum" + "\n"
-	str += "    String() string" + "\n"
-	str += "}" + "\n"
-	str += "" + "\n"
-
-	str += "type DescriptionEnum interface {" + "\n"
-	str += "    Enum" + "\n"
-	str += "    Description() string" + "\n"
-	str += "}" + "\n"
-	str += "\n"
-
-	str += "type EnumMetaValue struct {" + "\n"
-	str += "    VarName     string  `json:\"varName\"`" + "\n"
-	str += "    Value       any     `json:\"value\"`" + "\n"
-	str += "    Description *string `json:\"description\"`" + "\n"
-	str += "}" + "\n"
 	str += "\n"
 
 	for _, enumdef := range enums {
@@ -292,16 +266,8 @@ func fmtOutput(cs string, enums []EnumDef, pkgname string) string {
 		str += "}" + "\n"
 		str += "" + "\n"
 
-		str += "func (e " + enumdef.EnumTypeName + ") ValuesMeta() []EnumMetaValue {" + "\n"
+		str += "func (e " + enumdef.EnumTypeName + ") ValuesMeta() []enums.EnumMetaValue {" + "\n"
-		str += "    return []EnumMetaValue{" + "\n"
+		str += "    return " + enumdef.EnumTypeName + "ValuesMeta()"
-		for _, v := range enumdef.Values {
-			if hasDescr {
-				str += "        " + fmt.Sprintf("EnumMetaValue{VarName: \"%s\", Value: %s, Description: langext.Ptr(\"%s\")},", v.VarName, v.VarName, strings.TrimSpace(*v.Description)) + "\n"
-			} else {
-				str += "        " + fmt.Sprintf("EnumMetaValue{VarName: \"%s\", Value: %s, Description: nil},", v.VarName, v.VarName) + "\n"
-			}
-		}
-		str += "    }" + "\n"
 		str += "}" + "\n"
 		str += "" + "\n"
 
@@ -330,6 +296,15 @@ func fmtOutput(cs string, enums []EnumDef, pkgname string) string {
 		str += "}" + "\n"
 		str += "" + "\n"
 
+		str += "func (e " + enumdef.EnumTypeName + ") Meta() enums.EnumMetaValue {" + "\n"
+		if hasDescr {
+			str += "    return enums.EnumMetaValue{VarName: e.VarName(), Value: e, Description: langext.Ptr(e.Description())}"
+		} else {
+			str += "    return enums.EnumMetaValue{VarName: e.VarName(), Value: e, Description: nil}"
+		}
+		str += "}" + "\n"
+		str += "" + "\n"
+
 		str += "func Parse" + enumdef.EnumTypeName + "(vv string) (" + enumdef.EnumTypeName + ", bool) {" + "\n"
 		str += "    for _, ev := range __" + enumdef.EnumTypeName + "Values {" + "\n"
 		str += "        if string(ev) == vv {" + "\n"
@@ -345,14 +320,10 @@ func fmtOutput(cs string, enums []EnumDef, pkgname string) string {
 		str += "}" + "\n"
 		str += "" + "\n"
 
-		str += "func " + enumdef.EnumTypeName + "ValuesMeta() []EnumMetaValue {" + "\n"
+		str += "func " + enumdef.EnumTypeName + "ValuesMeta() []enums.EnumMetaValue {" + "\n"
-		str += "    return []EnumMetaValue{" + "\n"
+		str += "    return []enums.EnumMetaValue{" + "\n"
 		for _, v := range enumdef.Values {
-			if hasDescr {
+			str += "        " + v.VarName + ".Meta(),\n"
-				str += "        " + fmt.Sprintf("EnumMetaValue{VarName: \"%s\", Value: %s, Description: langext.Ptr(\"%s\")},", v.VarName, v.VarName, strings.TrimSpace(*v.Description)) + "\n"
-			} else {
-				str += "        " + fmt.Sprintf("EnumMetaValue{VarName: \"%s\", Value: %s, Description: nil},", v.VarName, v.VarName) + "\n"
-			}
 		}
 		str += "    }" + "\n"
 		str += "}" + "\n"

cmdext/builder.go

@@ -14,6 +14,7 @@ type CommandRunner struct {
 	listener         []CommandListener
 	enforceExitCodes *[]int
 	enforceNoTimeout bool
+	enforceNoStderr  bool
 }
 
 func Runner(program string) *CommandRunner {
@@ -25,6 +26,7 @@ func Runner(program string) *CommandRunner {
 		listener:         make([]CommandListener, 0),
 		enforceExitCodes: nil,
 		enforceNoTimeout: false,
+		enforceNoStderr:  false,
 	}
 }
 
@@ -73,6 +75,11 @@ func (r *CommandRunner) FailOnTimeout() *CommandRunner {
 	return r
 }
 
+func (r *CommandRunner) FailOnStderr() *CommandRunner {
+	r.enforceNoStderr = true
+	return r
+}
+
 func (r *CommandRunner) Listen(lstr CommandListener) *CommandRunner {
 	r.listener = append(r.listener, lstr)
 	return r

cmdext/cmdrunner.go

@@ -11,6 +11,7 @@ import (
 
 var ErrExitCode = errors.New("process exited with an unexpected exitcode")
 var ErrTimeout = errors.New("process did not exit after the specified timeout")
+var ErrStderrPrint = errors.New("process did print to stderr stream")
 
 type CommandResult struct {
 	StdOut          string
@@ -53,12 +54,27 @@ func run(opt CommandRunner) (CommandResult, error) {
 		err         error
 	}
 
+	stderrFailChan := make(chan bool)
+
 	outputChan := make(chan resultObj)
 	go func() {
 		// we need to first fully read the pipes and then call Wait
 		// see https://pkg.go.dev/os/exec#Cmd.StdoutPipe
 
-		stdout, stderr, stdcombined, err := preader.Read(opt.listener)
+		listener := make([]CommandListener, 0)
+		listener = append(listener, opt.listener...)
+
+		if opt.enforceNoStderr {
+			listener = append(listener, genericCommandListener{
+				_readRawStderr: langext.Ptr(func(v []byte) {
+					if len(v) > 0 {
+						stderrFailChan <- true
+					}
+				}),
+			})
+		}
+
+		stdout, stderr, stdcombined, err := preader.Read(listener)
 		if err != nil {
 			outputChan <- resultObj{stdout, stderr, stdcombined, err}
 			_ = cmd.Process.Kill()
@@ -115,6 +131,34 @@ func run(opt CommandRunner) (CommandResult, error) {
 			return res, nil
 		}
 
+	case <-stderrFailChan:
+		_ = cmd.Process.Kill()
+		for _, lstr := range opt.listener {
+			lstr.Timeout()
+		}
+
+		if fallback, ok := syncext.ReadChannelWithTimeout(outputChan, 32*time.Millisecond); ok {
+			// most of the time the cmd.Process.Kill() should also have finished the pipereader
+			// and we can at least return the already collected stdout, stderr, etc
+			res := CommandResult{
+				StdOut:          fallback.stdout,
+				StdErr:          fallback.stderr,
+				StdCombined:     fallback.stdcombined,
+				ExitCode:        -1,
+				CommandTimedOut: false,
+			}
+			return res, ErrStderrPrint
+		} else {
+			res := CommandResult{
+				StdOut:          "",
+				StdErr:          "",
+				StdCombined:     "",
+				ExitCode:        -1,
+				CommandTimedOut: false,
+			}
+			return res, ErrStderrPrint
+		}
+
 	case outobj := <-outputChan:
 		if exiterr, ok := outobj.err.(*exec.ExitError); ok {
 			excode := exiterr.ExitCode()

cmdext/cmdrunner_test.go

@@ -1,6 +1,7 @@
 package cmdext
 
 import (
+	"errors"
 	"fmt"
 	"testing"
 	"time"
@@ -289,16 +290,40 @@ func TestLongStdout(t *testing.T) {
 func TestFailOnTimeout(t *testing.T) {
 
 	_, err := Runner("sleep").Arg("2").Timeout(200 * time.Millisecond).FailOnTimeout().Run()
-	if err != ErrTimeout {
+	if !errors.Is(err, ErrTimeout) {
 		t.Errorf("wrong err := %v", err)
 	}
 
 }
 
+func TestFailOnStderr(t *testing.T) {
+
+	res1, err := Runner("python").Arg("-c").Arg("import sys; print(\"error\", file=sys.stderr, end='')").FailOnStderr().Run()
+	if err == nil {
+		t.Errorf("no err")
+	}
+	if res1.CommandTimedOut {
+		t.Errorf("Timeout")
+	}
+	if res1.ExitCode != -1 {
+		t.Errorf("res1.ExitCode == %v", res1.ExitCode)
+	}
+	if res1.StdErr != "error" {
+		t.Errorf("res1.StdErr == '%v'", res1.StdErr)
+	}
+	if res1.StdOut != "" {
+		t.Errorf("res1.StdOut == '%v'", res1.StdOut)
+	}
+	if res1.StdCombined != "error\n" {
+		t.Errorf("res1.StdCombined == '%v'", res1.StdCombined)
+	}
+
+}
+
 func TestFailOnExitcode(t *testing.T) {
 
 	_, err := Runner("false").Timeout(200 * time.Millisecond).FailOnExitCode().Run()
-	if err != ErrExitCode {
+	if !errors.Is(err, ErrExitCode) {
 		t.Errorf("wrong err := %v", err)
 	}
 

cryptext/passHash.go

@@ -3,6 +3,7 @@ package cryptext
 import (
 	"crypto/rand"
 	"crypto/sha256"
+	"crypto/sha512"
 	"encoding/base64"
 	"encoding/hex"
 	"errors"
@@ -14,14 +15,15 @@ import (
 	"strings"
 )
 
-const LatestPassHashVersion = 4
+const LatestPassHashVersion = 5
 
 // PassHash
-// - [v0]: plaintext password ( `0|...` )
+// - [v0]: plaintext password ( `0|...` )                  // simple, used to write PW's directly in DB
-// - [v1]: sha256(plaintext)
+// - [v1]: sha256(plaintext)                               // simple hashing
-// - [v2]: seed | sha256<seed>(plaintext)
+// - [v2]: seed | sha256<seed>(plaintext)                  // add seed
-// - [v3]: seed | sha256<seed>(plaintext) | [hex(totp)]
+// - [v3]: seed | sha256<seed>(plaintext) | [hex(totp)]    // add TOTP support
-// - [v4]: bcrypt(plaintext) | [hex(totp)]
+// - [v4]: bcrypt(plaintext) | [hex(totp)]                 // use proper bcrypt
+// - [v5]: bcrypt(sha512(plaintext)) | [hex(totp)]         // hash pw before bcrypt (otherwise max pw-len = 72)
 type PassHash string
 
 func (ph PassHash) Valid() bool {
@@ -109,7 +111,21 @@ func (ph PassHash) Data() (_version int, _seed []byte, _payload []byte, _totp bo
 		totp := false
 		totpsecret := make([]byte, 0)
 		if split[2] != "0" {
-			totpsecret, err = hex.DecodeString(split[3])
+			totpsecret, err = hex.DecodeString(split[2])
+			totp = true
+		}
+		return int(version), nil, payload, totp, totpsecret, true
+	}
+
+	if version == 5 {
+		if len(split) != 3 {
+			return -1, nil, nil, false, nil, false
+		}
+		payload := []byte(split[1])
+		totp := false
+		totpsecret := make([]byte, 0)
+		if split[2] != "0" {
+			totpsecret, err = hex.DecodeString(split[2])
 			totp = true
 		}
 		return int(version), nil, payload, totp, totpsecret, true
@@ -156,6 +172,14 @@ func (ph PassHash) Verify(plainpass string, totp *string) bool {
 		}
 	}
 
+	if version == 5 {
+		if !hastotp {
+			return bcrypt.CompareHashAndPassword(payload, hash512(plainpass)) == nil
+		} else {
+			return bcrypt.CompareHashAndPassword(payload, hash512(plainpass)) == nil && totpext.Validate(totpsecret, *totp)
+		}
+	}
+
 	return false
 }
 
@@ -209,6 +233,12 @@ func (ph PassHash) ClearTOTP() (PassHash, error) {
 		return PassHash(strings.Join(split, "|")), nil
 	}
 
+	if version == 5 {
+		split := strings.Split(string(ph), "|")
+		split[2] = "0"
+		return PassHash(strings.Join(split, "|")), nil
+	}
+
 	return "", errors.New("unknown version")
 }
 
@@ -242,6 +272,12 @@ func (ph PassHash) WithTOTP(totpSecret []byte) (PassHash, error) {
 		return PassHash(strings.Join(split, "|")), nil
 	}
 
+	if version == 5 {
+		split := strings.Split(string(ph), "|")
+		split[2] = hex.EncodeToString(totpSecret)
+		return PassHash(strings.Join(split, "|")), nil
+	}
+
 	return "", errors.New("unknown version")
 }
 
@@ -271,6 +307,10 @@ func (ph PassHash) Change(newPlainPass string) (PassHash, error) {
 		return HashPasswordV4(newPlainPass, langext.Conditional(hastotp, totpsecret, nil))
 	}
 
+	if version == 5 {
+		return HashPasswordV5(newPlainPass, langext.Conditional(hastotp, totpsecret, nil))
+	}
+
 	return "", errors.New("unknown version")
 }
 
@@ -279,7 +319,24 @@ func (ph PassHash) String() string {
 }
 
 func HashPassword(plainpass string, totpSecret []byte) (PassHash, error) {
-	return HashPasswordV4(plainpass, totpSecret)
+	return HashPasswordV5(plainpass, totpSecret)
+}
+
+func HashPasswordV5(plainpass string, totpSecret []byte) (PassHash, error) {
+	var strtotp string
+
+	if totpSecret == nil {
+		strtotp = "0"
+	} else {
+		strtotp = hex.EncodeToString(totpSecret)
+	}
+
+	payload, err := bcrypt.GenerateFromPassword(hash512(plainpass), bcrypt.MinCost)
+	if err != nil {
+		return "", err
+	}
+
+	return PassHash(fmt.Sprintf("5|%s|%s", string(payload), strtotp)), nil
 }
 
 func HashPasswordV4(plainpass string, totpSecret []byte) (PassHash, error) {
@@ -340,6 +397,13 @@ func HashPasswordV0(plainpass string) (PassHash, error) {
 	return PassHash(fmt.Sprintf("0|%s", plainpass)), nil
 }
 
+func hash512(s string) []byte {
+	h := sha512.New()
+	h.Write([]byte(s))
+	bs := h.Sum(nil)
+	return bs
+}
+
 func hash256(s string) []byte {
 	h := sha256.New()
 	h.Write([]byte(s))

cryptext/passHash_test.go

@@ -0,0 +1,210 @@
+package cryptext
+
+import (
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"gogs.mikescher.com/BlackForestBytes/goext/totpext"
+	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"testing"
+)
+
+func TestPassHash1(t *testing.T) {
+	ph, err := HashPassword("test123", nil)
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertFalse(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+}
+
+func TestPassHashTOTP(t *testing.T) {
+	sec, err := totpext.GenerateSecret()
+	tst.AssertNoErr(t, err)
+
+	ph, err := HashPassword("test123", sec)
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertTrue(t, ph.HasTOTP())
+	tst.AssertFalse(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertFalse(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+	tst.AssertTrue(t, ph.Verify("test123", langext.Ptr(totpext.TOTP(sec))))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+}
+
+func TestPassHashUpgrade_V0(t *testing.T) {
+	ph, err := HashPasswordV0("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertTrue(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+	ph, err = ph.Upgrade("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertFalse(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+}
+
+func TestPassHashUpgrade_V1(t *testing.T) {
+	ph, err := HashPasswordV1("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertTrue(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+	ph, err = ph.Upgrade("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertFalse(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+}
+
+func TestPassHashUpgrade_V2(t *testing.T) {
+	ph, err := HashPasswordV2("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertTrue(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+	ph, err = ph.Upgrade("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertFalse(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+}
+
+func TestPassHashUpgrade_V3(t *testing.T) {
+	ph, err := HashPasswordV3("test123", nil)
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertTrue(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+	ph, err = ph.Upgrade("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertFalse(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+}
+
+func TestPassHashUpgrade_V3_TOTP(t *testing.T) {
+	sec, err := totpext.GenerateSecret()
+	tst.AssertNoErr(t, err)
+
+	ph, err := HashPasswordV3("test123", sec)
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertTrue(t, ph.HasTOTP())
+	tst.AssertTrue(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertFalse(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+	tst.AssertTrue(t, ph.Verify("test123", langext.Ptr(totpext.TOTP(sec))))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+	ph, err = ph.Upgrade("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertTrue(t, ph.HasTOTP())
+	tst.AssertFalse(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertFalse(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+	tst.AssertTrue(t, ph.Verify("test123", langext.Ptr(totpext.TOTP(sec))))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+}
+
+func TestPassHashUpgrade_V4(t *testing.T) {
+	ph, err := HashPasswordV4("test123", nil)
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertTrue(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+	ph, err = ph.Upgrade("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertFalse(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+}
+
+func TestPassHashUpgrade_V4_TOTP(t *testing.T) {
+	sec, err := totpext.GenerateSecret()
+	tst.AssertNoErr(t, err)
+
+	ph, err := HashPasswordV4("test123", sec)
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertTrue(t, ph.HasTOTP())
+	tst.AssertTrue(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertFalse(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+	tst.AssertTrue(t, ph.Verify("test123", langext.Ptr(totpext.TOTP(sec))))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+	ph, err = ph.Upgrade("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertTrue(t, ph.HasTOTP())
+	tst.AssertFalse(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertFalse(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+	tst.AssertTrue(t, ph.Verify("test123", langext.Ptr(totpext.TOTP(sec))))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+}

dataext/syncSet.go

@@ -7,6 +7,9 @@ type SyncSet[TData comparable] struct {
 	lock sync.Mutex
 }
 
+// Add adds `value` to the set
+// returns true  if the value was actually inserted
+// returns false if the value already existed
 func (s *SyncSet[TData]) Add(value TData) bool {
 	s.lock.Lock()
 	defer s.lock.Unlock()
@@ -15,10 +18,10 @@ func (s *SyncSet[TData]) Add(value TData) bool {
 		s.data = make(map[TData]bool)
 	}
 
-	_, ok := s.data[value]
+	_, existsInPreState := s.data[value]
 	s.data[value] = true
 
-	return !ok
+	return !existsInPreState
 }
 
 func (s *SyncSet[TData]) AddAll(values []TData) {

enums/enum.go

@@ -0,0 +1,24 @@
+package enums
+
+type Enum interface {
+	Valid() bool
+	ValuesAny() []any
+	ValuesMeta() []EnumMetaValue
+	VarName() string
+}
+
+type StringEnum interface {
+	Enum
+	String() string
+}
+
+type DescriptionEnum interface {
+	Enum
+	Description() string
+}
+
+type EnumMetaValue struct {
+	VarName     string  `json:"varName"`
+	Value       any     `json:"value"`
+	Description *string `json:"description"`
+}

exerr/builder.go

@@ -0,0 +1,470 @@
+package exerr
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"github.com/gin-gonic/gin"
+	"github.com/rs/zerolog"
+	"go.mongodb.org/mongo-driver/bson/primitive"
+	"gogs.mikescher.com/BlackForestBytes/goext/dataext"
+	"gogs.mikescher.com/BlackForestBytes/goext/enums"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"net/http"
+	"os"
+	"runtime/debug"
+	"strings"
+	"time"
+)
+
+//
+// ==== USAGE =====
+//
+// If some method returns an error _always wrap it into an exerror:
+//     value, err := do_something(..)
+//     if err != nil {
+//         return nil, exerror.Wrap(err, "do something failed").Build()
+//     }
+//
+// If possible add metadata to the error (eg the id that was not found, ...), the methods are the same as in zerolog
+//     return nil, exerror.Wrap(err, "do something failed").Str("someid", id).Int("count", in.Count).Build()
+//
+// You can change the errortype with `.User()` and `.System()` (User-errors are 400 and System-errors 500)
+// You can also manually set the statuscode with `.WithStatuscode(http.NotFound)`
+// You can set the type with `WithType(..)`
+//
+// New Errors (that don't wrap an existing err object) are created with New
+//     return nil, exerror.New(exerror.TypeInternal, "womethign wen horrible wrong").Build()
+// You can eitehr use an existing ErrorType, the "catch-all" ErrInternal, or add you own ErrType in consts.go
+//
+// All errors should be handled one of the following four ways:
+//   - return the error to the caller and let him handle it:
+//     (also auto-prints the error to the log)
+//     => Wrap/New + Build
+//   - Print the error
+//     (also auto-sends it to the error-service)
+//     This is useful for errors that happen asynchron or are non-fatal for the current request
+//     => Wrap/New + Print
+//   - Return the error to the Rest-API caller
+//     (also auto-prints the error to the log)
+//     (also auto-sends it to the error-service)
+//     => Wrap/New + Output
+//   - Print and stop the service
+//     (also auto-sends it to the error-service)
+//     => Wrap/New + Fatal
+//
+
+var stackSkipLogger zerolog.Logger
+
+func init() {
+	cw := zerolog.ConsoleWriter{
+		Out:        os.Stdout,
+		TimeFormat: "2006-01-02 15:04:05 Z07:00",
+	}
+
+	multi := zerolog.MultiLevelWriter(cw)
+	stackSkipLogger = zerolog.New(multi).With().Timestamp().CallerWithSkipFrameCount(4).Logger()
+}
+
+type Builder struct {
+	errorData       *ExErr
+	containsGinData bool
+}
+
+func Get(err error) *Builder {
+	return &Builder{errorData: FromError(err)}
+}
+
+func New(t ErrorType, msg string) *Builder {
+	return &Builder{errorData: newExErr(CatSystem, t, msg)}
+}
+
+func Wrap(err error, msg string) *Builder {
+	if err == nil {
+		return &Builder{errorData: newExErr(CatSystem, TypeInternal, msg)} // prevent NPE if we call Wrap with err==nil
+	}
+
+	if !pkgconfig.RecursiveErrors {
+		v := FromError(err)
+		v.Message = msg
+		return &Builder{errorData: v}
+	}
+	return &Builder{errorData: wrapExErr(FromError(err), msg, CatWrap, 1)}
+}
+
+// ----------------------------------------------------------------------------
+
+func (b *Builder) WithType(t ErrorType) *Builder {
+	b.errorData.Type = t
+	return b
+}
+
+func (b *Builder) WithStatuscode(status int) *Builder {
+	b.errorData.StatusCode = &status
+	return b
+}
+
+func (b *Builder) WithMessage(msg string) *Builder {
+	b.errorData.Message = msg
+	return b
+}
+
+// ----------------------------------------------------------------------------
+
+// Err changes the Severity to ERROR (default)
+// The error will be:
+//
+//   - On Build():
+//
+//   - Short-Logged as Err
+//
+//   - On Print():
+//
+//   - Logged as Err
+//
+//   - Send to the error-service
+//
+//   - On Output():
+//
+//   - Logged as Err
+//
+//   - Send to the error-service
+func (b *Builder) Err() *Builder {
+	b.errorData.Severity = SevErr
+	return b
+}
+
+// Warn changes the Severity to WARN
+// The error will be:
+//
+//   - On Build():
+//
+//   - -(nothing)-
+//
+//   - On Print():
+//
+//   - Short-Logged as Warn
+//
+//   - On Output():
+//
+//   - Logged as Warn
+func (b *Builder) Warn() *Builder {
+	b.errorData.Severity = SevWarn
+	return b
+}
+
+// Info changes the Severity to INFO
+// The error will be:
+//
+//   - On Build():
+//
+//   - -(nothing)-
+//
+//   - On Print():
+//
+//   - -(nothing)-
+//
+//   - On Output():
+//
+//   - -(nothing)-
+func (b *Builder) Info() *Builder {
+	b.errorData.Severity = SevInfo
+	return b
+}
+
+// ----------------------------------------------------------------------------
+
+// User sets the Category to CatUser
+//
+// Errors with category
+func (b *Builder) User() *Builder {
+	b.errorData.Category = CatUser
+	return b
+}
+
+func (b *Builder) System() *Builder {
+	b.errorData.Category = CatSystem
+	return b
+}
+
+// ----------------------------------------------------------------------------
+
+func (b *Builder) Id(key string, val fmt.Stringer) *Builder {
+	return b.addMeta(key, MDTID, newIDWrap(val))
+}
+
+func (b *Builder) StrPtr(key string, val *string) *Builder {
+	return b.addMeta(key, MDTStringPtr, val)
+}
+
+func (b *Builder) Str(key string, val string) *Builder {
+	return b.addMeta(key, MDTString, val)
+}
+
+func (b *Builder) Int(key string, val int) *Builder {
+	return b.addMeta(key, MDTInt, val)
+}
+
+func (b *Builder) Int8(key string, val int8) *Builder {
+	return b.addMeta(key, MDTInt8, val)
+}
+
+func (b *Builder) Int16(key string, val int16) *Builder {
+	return b.addMeta(key, MDTInt16, val)
+}
+
+func (b *Builder) Int32(key string, val int32) *Builder {
+	return b.addMeta(key, MDTInt32, val)
+}
+
+func (b *Builder) Int64(key string, val int64) *Builder {
+	return b.addMeta(key, MDTInt64, val)
+}
+
+func (b *Builder) Float32(key string, val float32) *Builder {
+	return b.addMeta(key, MDTFloat32, val)
+}
+
+func (b *Builder) Float64(key string, val float64) *Builder {
+	return b.addMeta(key, MDTFloat64, val)
+}
+
+func (b *Builder) Bool(key string, val bool) *Builder {
+	return b.addMeta(key, MDTBool, val)
+}
+
+func (b *Builder) Bytes(key string, val []byte) *Builder {
+	return b.addMeta(key, MDTBytes, val)
+}
+
+func (b *Builder) ObjectID(key string, val primitive.ObjectID) *Builder {
+	return b.addMeta(key, MDTObjectID, val)
+}
+
+func (b *Builder) Time(key string, val time.Time) *Builder {
+	return b.addMeta(key, MDTTime, val)
+}
+
+func (b *Builder) Dur(key string, val time.Duration) *Builder {
+	return b.addMeta(key, MDTDuration, val)
+}
+
+func (b *Builder) Strs(key string, val []string) *Builder {
+	return b.addMeta(key, MDTStringArray, val)
+}
+
+func (b *Builder) Ints(key string, val []int) *Builder {
+	return b.addMeta(key, MDTIntArray, val)
+}
+
+func (b *Builder) Ints32(key string, val []int32) *Builder {
+	return b.addMeta(key, MDTInt32Array, val)
+}
+
+func (b *Builder) Type(key string, cls interface{}) *Builder {
+	return b.addMeta(key, MDTString, fmt.Sprintf("%T", cls))
+}
+
+func (b *Builder) Interface(key string, val interface{}) *Builder {
+	return b.addMeta(key, MDTAny, newAnyWrap(val))
+}
+
+func (b *Builder) Any(key string, val any) *Builder {
+	return b.addMeta(key, MDTAny, newAnyWrap(val))
+}
+
+func (b *Builder) Stringer(key string, val fmt.Stringer) *Builder {
+	if val == nil {
+		return b.addMeta(key, MDTString, "(!nil)")
+	} else {
+		return b.addMeta(key, MDTString, val.String())
+	}
+}
+
+func (b *Builder) Enum(key string, val enums.Enum) *Builder {
+	return b.addMeta(key, MDTEnum, newEnumWrap(val))
+}
+
+func (b *Builder) Stack() *Builder {
+	return b.addMeta("@Stack", MDTString, string(debug.Stack()))
+}
+
+func (b *Builder) Errs(key string, val []error) *Builder {
+	for i, valerr := range val {
+		b.addMeta(fmt.Sprintf("%v[%v]", key, i), MDTString, Get(valerr).errorData.FormatLog(LogPrintFull))
+	}
+	return b
+}
+
+func (b *Builder) GinReq(ctx context.Context, g *gin.Context, req *http.Request) *Builder {
+	if v := ctx.Value("start_timestamp"); v != nil {
+		if t, ok := v.(time.Time); ok {
+			b.Time("ctx.startTimestamp", t)
+			b.Time("ctx.endTimestamp", time.Now())
+		}
+	}
+	b.Str("gin.method", req.Method)
+	b.Str("gin.path", g.FullPath())
+	b.Strs("gin.header", extractHeader(g.Request.Header))
+	if req.URL != nil {
+		b.Str("gin.url", req.URL.String())
+	}
+	if ctxVal := g.GetString("apiversion"); ctxVal != "" {
+		b.Str("gin.context.apiversion", ctxVal)
+	}
+	if ctxVal := g.GetString("uid"); ctxVal != "" {
+		b.Str("gin.context.uid", ctxVal)
+	}
+	if ctxVal := g.GetString("fcmId"); ctxVal != "" {
+		b.Str("gin.context.fcmid", ctxVal)
+	}
+	if ctxVal := g.GetString("reqid"); ctxVal != "" {
+		b.Str("gin.context.reqid", ctxVal)
+	}
+	if req.Method != "GET" && req.Body != nil {
+
+		if req.Header.Get("Content-Type") == "application/json" {
+			if brc, ok := req.Body.(dataext.BufferedReadCloser); ok {
+				if bin, err := brc.BufferedAll(); err == nil {
+					if len(bin) < 16*1024 {
+						var prettyJSON bytes.Buffer
+						err = json.Indent(&prettyJSON, bin, "", "  ")
+						if err == nil {
+							b.Str("gin.body", string(prettyJSON.Bytes()))
+						} else {
+							b.Bytes("gin.body", bin)
+						}
+					} else {
+						b.Str("gin.body", fmt.Sprintf("[[%v bytes | %s]]", len(bin), req.Header.Get("Content-Type")))
+					}
+				}
+			}
+		}
+
+		if req.Header.Get("Content-Type") == "multipart/form-data" || req.Header.Get("Content-Type") == "x-www-form-urlencoded" {
+			if brc, ok := req.Body.(dataext.BufferedReadCloser); ok {
+				if bin, err := brc.BufferedAll(); err == nil {
+					if len(bin) < 16*1024 {
+						b.Bytes("gin.body", bin)
+					} else {
+						b.Str("gin.body", fmt.Sprintf("[[%v bytes | %s]]", len(bin), req.Header.Get("Content-Type")))
+					}
+				}
+			}
+		}
+
+	}
+
+	b.containsGinData = true
+	return b
+}
+
+func formatHeader(header map[string][]string) string {
+	ml := 1
+	for k, _ := range header {
+		if len(k) > ml {
+			ml = len(k)
+		}
+	}
+	r := ""
+	for k, v := range header {
+		if r != "" {
+			r += "\n"
+		}
+		for _, hval := range v {
+			value := hval
+			value = strings.ReplaceAll(value, "\n", "\\n")
+			value = strings.ReplaceAll(value, "\r", "\\r")
+			value = strings.ReplaceAll(value, "\t", "\\t")
+			r += langext.StrPadRight(k, " ", ml) + " := " + value
+		}
+	}
+	return r
+}
+
+func extractHeader(header map[string][]string) []string {
+	r := make([]string, 0, len(header))
+	for k, v := range header {
+		for _, hval := range v {
+			value := hval
+			value = strings.ReplaceAll(value, "\n", "\\n")
+			value = strings.ReplaceAll(value, "\r", "\\r")
+			value = strings.ReplaceAll(value, "\t", "\\t")
+			r = append(r, k+": "+value)
+		}
+	}
+	return r
+}
+
+// ----------------------------------------------------------------------------
+
+// Build creates a new error, ready to pass up the stack
+// If the errors is not SevWarn or SevInfo it gets also logged (in short form, without stacktrace) onto stdout
+func (b *Builder) Build() error {
+	warnOnPkgConfigNotInitialized()
+
+	if pkgconfig.ZeroLogErrTraces && (b.errorData.Severity == SevErr || b.errorData.Severity == SevFatal) {
+		b.errorData.ShortLog(stackSkipLogger.Error())
+	} else if pkgconfig.ZeroLogAllTraces {
+		b.errorData.ShortLog(stackSkipLogger.Error())
+	}
+
+	b.CallListener(MethodBuild)
+
+	return b.errorData
+}
+
+// Output prints the error onto the gin stdout.
+// The error also gets printed to stdout/stderr
+// If the error is SevErr|SevFatal we also send it to the error-service
+func (b *Builder) Output(ctx context.Context, g *gin.Context) {
+	if !b.containsGinData && g.Request != nil {
+		// Auto-Add gin metadata if the caller hasn't already done it
+		b.GinReq(ctx, g, g.Request)
+	}
+
+	b.errorData.Output(g)
+
+	if b.errorData.Severity == SevErr || b.errorData.Severity == SevFatal {
+		b.errorData.Log(stackSkipLogger.Error())
+	} else if b.errorData.Severity == SevWarn {
+		b.errorData.Log(stackSkipLogger.Warn())
+	}
+
+	b.CallListener(MethodOutput)
+}
+
+// Print prints the error
+// If the error is SevErr we also send it to the error-service
+func (b *Builder) Print() {
+	if b.errorData.Severity == SevErr || b.errorData.Severity == SevFatal {
+		b.errorData.Log(stackSkipLogger.Error())
+	} else if b.errorData.Severity == SevWarn {
+		b.errorData.ShortLog(stackSkipLogger.Warn())
+	}
+
+	b.CallListener(MethodPrint)
+}
+
+func (b *Builder) Format(level LogPrintLevel) string {
+	return b.errorData.FormatLog(level)
+}
+
+// Fatal prints the error and terminates the program
+// If the error is SevErr we also send it to the error-service
+func (b *Builder) Fatal() {
+	b.errorData.Severity = SevFatal
+	b.errorData.Log(stackSkipLogger.WithLevel(zerolog.FatalLevel))
+
+	b.CallListener(MethodFatal)
+
+	os.Exit(1)
+}
+
+// ----------------------------------------------------------------------------
+
+func (b *Builder) addMeta(key string, mdtype metaDataType, val interface{}) *Builder {
+	b.errorData.Meta.add(key, mdtype, val)
+	return b
+}

exerr/constructor.go

@@ -0,0 +1,204 @@
+package exerr
+
+import (
+	"encoding/json"
+	"fmt"
+	"go.mongodb.org/mongo-driver/bson/primitive"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"reflect"
+	"time"
+)
+
+var reflectTypeStr = reflect.TypeOf("")
+
+func FromError(err error) *ExErr {
+	if verr, ok := err.(*ExErr); ok {
+		// A simple ExErr
+		return verr
+	}
+
+	// A foreign error (eg a MongoDB exception)
+	return &ExErr{
+		UniqueID:       newID(),
+		Category:       CatForeign,
+		Type:           TypeInternal,
+		Severity:       SevErr,
+		Timestamp:      time.Time{},
+		StatusCode:     nil,
+		Message:        err.Error(),
+		WrappedErrType: fmt.Sprintf("%T", err),
+		WrappedErr:     err,
+		Caller:         "",
+		OriginalError:  nil,
+		Meta:           getForeignMeta(err),
+	}
+}
+
+func newExErr(cat ErrorCategory, errtype ErrorType, msg string) *ExErr {
+	return &ExErr{
+		UniqueID:       newID(),
+		Category:       cat,
+		Type:           errtype,
+		Severity:       SevErr,
+		Timestamp:      time.Now(),
+		StatusCode:     nil,
+		Message:        msg,
+		WrappedErrType: "",
+		WrappedErr:     nil,
+		Caller:         callername(2),
+		OriginalError:  nil,
+		Meta:           make(map[string]MetaValue),
+	}
+}
+
+func wrapExErr(e *ExErr, msg string, cat ErrorCategory, stacktraceskip int) *ExErr {
+	return &ExErr{
+		UniqueID:       newID(),
+		Category:       cat,
+		Type:           TypeWrap,
+		Severity:       SevErr,
+		Timestamp:      time.Now(),
+		StatusCode:     e.StatusCode,
+		Message:        msg,
+		WrappedErrType: "",
+		WrappedErr:     nil,
+		Caller:         callername(1 + stacktraceskip),
+		OriginalError:  e,
+		Meta:           make(map[string]MetaValue),
+	}
+}
+
+func getForeignMeta(err error) (mm MetaMap) {
+	mm = make(map[string]MetaValue)
+
+	defer func() {
+		if panicerr := recover(); panicerr != nil {
+			New(TypePanic, "Panic while trying to get foreign meta").
+				Str("source", err.Error()).
+				Interface("panic-object", panicerr).
+				Stack().
+				Print()
+		}
+	}()
+
+	rval := reflect.ValueOf(err)
+	if rval.Kind() == reflect.Interface || rval.Kind() == reflect.Ptr {
+		rval = reflect.ValueOf(err).Elem()
+	}
+
+	mm.add("foreign.errortype", MDTString, rval.Type().String())
+
+	for k, v := range addMetaPrefix("foreign", getReflectedMetaValues(err, 8)) {
+		mm[k] = v
+	}
+
+	return mm
+}
+
+func getReflectedMetaValues(value interface{}, remainingDepth int) map[string]MetaValue {
+
+	if remainingDepth <= 0 {
+		return map[string]MetaValue{}
+	}
+
+	if langext.IsNil(value) {
+		return map[string]MetaValue{"": {DataType: MDTNil, Value: nil}}
+	}
+
+	rval := reflect.ValueOf(value)
+
+	if rval.Type().Kind() == reflect.Ptr {
+
+		if rval.IsNil() {
+			return map[string]MetaValue{"*": {DataType: MDTNil, Value: nil}}
+		}
+
+		elem := rval.Elem()
+
+		return addMetaPrefix("*", getReflectedMetaValues(elem.Interface(), remainingDepth-1))
+	}
+
+	if !rval.CanInterface() {
+		return map[string]MetaValue{"": {DataType: MDTString, Value: "<<no-interface>>"}}
+	}
+
+	raw := rval.Interface()
+
+	switch ifraw := raw.(type) {
+	case time.Time:
+		return map[string]MetaValue{"": {DataType: MDTTime, Value: ifraw}}
+	case time.Duration:
+		return map[string]MetaValue{"": {DataType: MDTDuration, Value: ifraw}}
+	case int:
+		return map[string]MetaValue{"": {DataType: MDTInt, Value: ifraw}}
+	case int8:
+		return map[string]MetaValue{"": {DataType: MDTInt8, Value: ifraw}}
+	case int16:
+		return map[string]MetaValue{"": {DataType: MDTInt16, Value: ifraw}}
+	case int32:
+		return map[string]MetaValue{"": {DataType: MDTInt32, Value: ifraw}}
+	case int64:
+		return map[string]MetaValue{"": {DataType: MDTInt64, Value: ifraw}}
+	case string:
+		return map[string]MetaValue{"": {DataType: MDTString, Value: ifraw}}
+	case bool:
+		return map[string]MetaValue{"": {DataType: MDTBool, Value: ifraw}}
+	case []byte:
+		return map[string]MetaValue{"": {DataType: MDTBytes, Value: ifraw}}
+	case float32:
+		return map[string]MetaValue{"": {DataType: MDTFloat32, Value: ifraw}}
+	case float64:
+		return map[string]MetaValue{"": {DataType: MDTFloat64, Value: ifraw}}
+	case []int:
+		return map[string]MetaValue{"": {DataType: MDTIntArray, Value: ifraw}}
+	case []int32:
+		return map[string]MetaValue{"": {DataType: MDTInt32Array, Value: ifraw}}
+	case primitive.ObjectID:
+		return map[string]MetaValue{"": {DataType: MDTObjectID, Value: ifraw}}
+	case []string:
+		return map[string]MetaValue{"": {DataType: MDTStringArray, Value: ifraw}}
+	}
+
+	if rval.Type().Kind() == reflect.Struct {
+		m := make(map[string]MetaValue)
+		for i := 0; i < rval.NumField(); i++ {
+			fieldtype := rval.Type().Field(i)
+
+			fieldname := fieldtype.Name
+
+			if fieldtype.IsExported() {
+				for k, v := range addMetaPrefix(fieldname, getReflectedMetaValues(rval.Field(i).Interface(), remainingDepth-1)) {
+					m[k] = v
+				}
+			}
+		}
+		return m
+	}
+
+	if rval.Type().ConvertibleTo(reflectTypeStr) {
+		return map[string]MetaValue{"": {DataType: MDTString, Value: rval.Convert(reflectTypeStr).String()}}
+	}
+
+	jsonval, err := json.Marshal(value)
+	if err != nil {
+		panic(err) // gets recovered later up
+	}
+
+	return map[string]MetaValue{"": {DataType: MDTString, Value: string(jsonval)}}
+}
+
+func addMetaPrefix(prefix string, m map[string]MetaValue) map[string]MetaValue {
+	if len(m) == 1 {
+		for k, v := range m {
+			if k == "" {
+				return map[string]MetaValue{prefix: v}
+			}
+		}
+	}
+
+	r := make(map[string]MetaValue, len(m))
+	for k, v := range m {
+		r[prefix+"."+k] = v
+	}
+	return r
+}

exerr/data.go

@@ -0,0 +1,76 @@
+package exerr
+
+import (
+	"gogs.mikescher.com/BlackForestBytes/goext/dataext"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+)
+
+type ErrorCategory struct{ Category string }
+
+var (
+	CatWrap    = ErrorCategory{"Wrap"}    // The error is simply wrapping another error (e.g. when a grpc call returns an error)
+	CatSystem  = ErrorCategory{"System"}  // An internal system error (e.g. connection to db failed)
+	CatUser    = ErrorCategory{"User"}    // The user (the API caller) did something wrong (e.g. he has no permissions to do this)
+	CatForeign = ErrorCategory{"Foreign"} // A foreign error that some component threw (e.g. an unknown mongodb error), happens if we call Wrap(..) on an non-bmerror value
+)
+
+//goland:noinspection GoUnusedGlobalVariable
+var AllCategories = []ErrorCategory{CatWrap, CatSystem, CatUser, CatForeign}
+
+type ErrorSeverity struct{ Severity string }
+
+var (
+	SevTrace = ErrorSeverity{"Trace"}
+	SevDebug = ErrorSeverity{"Debug"}
+	SevInfo  = ErrorSeverity{"Info"}
+	SevWarn  = ErrorSeverity{"Warn"}
+	SevErr   = ErrorSeverity{"Err"}
+	SevFatal = ErrorSeverity{"Fatal"}
+)
+
+//goland:noinspection GoUnusedGlobalVariable
+var AllSeverities = []ErrorSeverity{SevTrace, SevDebug, SevInfo, SevWarn, SevErr, SevFatal}
+
+type ErrorType struct {
+	Key               string
+	DefaultStatusCode *int
+}
+
+//goland:noinspection GoUnusedGlobalVariable
+var (
+	TypeInternal       = NewType("INTERNAL_ERROR", langext.Ptr(500))
+	TypePanic          = NewType("PANIC", langext.Ptr(500))
+	TypeNotImplemented = NewType("NOT_IMPLEMENTED", langext.Ptr(500))
+
+	TypeWrap = NewType("Wrap", nil)
+
+	TypeBindFailURI      = NewType("BINDFAIL_URI", langext.Ptr(400))
+	TypeBindFailQuery    = NewType("BINDFAIL_QUERY", langext.Ptr(400))
+	TypeBindFailJSON     = NewType("BINDFAIL_JSON", langext.Ptr(400))
+	TypeBindFailFormData = NewType("BINDFAIL_FORMDATA", langext.Ptr(400))
+	TypeBindFailHeader   = NewType("BINDFAIL_HEADER", langext.Ptr(400))
+
+	TypeUnauthorized = NewType("UNAUTHORIZED", langext.Ptr(401))
+	TypeAuthFailed   = NewType("AUTH_FAILED", langext.Ptr(401))
+
+	// other values come from pkgconfig
+)
+
+var registeredTypes = dataext.SyncSet[string]{}
+
+func NewType(key string, defStatusCode *int) ErrorType {
+	insertOkay := registeredTypes.Add(key)
+	if !insertOkay {
+		panic("Cannot register same ErrType ('" + key + "') more than once")
+	}
+
+	return ErrorType{key, defStatusCode}
+}
+
+type LogPrintLevel string
+
+const (
+	LogPrintFull     LogPrintLevel = "Full"
+	LogPrintOverview LogPrintLevel = "Overview"
+	LogPrintShort    LogPrintLevel = "Short"
+)

exerr/errinit.go

@@ -0,0 +1,80 @@
+package exerr
+
+import (
+	"fmt"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+)
+
+type ErrorPackageConfig struct {
+	ZeroLogErrTraces       bool                                             // autom print zerolog logs on .Build()  (for SevErr and SevFatal)
+	ZeroLogAllTraces       bool                                             // autom print zerolog logs on .Build()  (for all Severities)
+	RecursiveErrors        bool                                             // errors contains their Origin-Error
+	ExtendedGinOutput      bool                                             // Log extended data (trace, meta, ...) to gin in err.Output()
+	IncludeMetaInGinOutput bool                                             // Log meta fields ( from e.g. `.Str(key, val).Build()` ) to gin in err.Output()
+	ExtendGinOutput        func(err *ExErr, json map[string]any)            // (Optionally) extend the gin output with more fields
+	ExtendGinDataOutput    func(err *ExErr, depth int, json map[string]any) // (Optionally) extend the gin `__data` output with more fields
+}
+
+type ErrorPackageConfigInit struct {
+	ZeroLogErrTraces       bool
+	ZeroLogAllTraces       bool
+	RecursiveErrors        bool
+	ExtendedGinOutput      bool
+	IncludeMetaInGinOutput bool
+	ExtendGinOutput        func(err *ExErr, json map[string]any)
+	ExtendGinDataOutput    func(err *ExErr, depth int, json map[string]any)
+}
+
+var initialized = false
+
+var pkgconfig = ErrorPackageConfig{
+	ZeroLogErrTraces:       true,
+	ZeroLogAllTraces:       false,
+	RecursiveErrors:        true,
+	ExtendedGinOutput:      false,
+	IncludeMetaInGinOutput: true,
+	ExtendGinOutput:        func(err *ExErr, json map[string]any) {},
+	ExtendGinDataOutput:    func(err *ExErr, depth int, json map[string]any) {},
+}
+
+// Init initializes the exerr packages
+// Must be called at the program start, before (!) any errors
+// Is not thread-safe
+func Init(cfg ErrorPackageConfigInit) {
+	if initialized {
+		panic("Cannot re-init error package")
+	}
+
+	ego := func(err *ExErr, json map[string]any) {}
+	egdo := func(err *ExErr, depth int, json map[string]any) {}
+
+	if cfg.ExtendGinOutput != nil {
+		ego = cfg.ExtendGinOutput
+	}
+	if cfg.ExtendGinDataOutput != nil {
+		egdo = cfg.ExtendGinDataOutput
+	}
+
+	pkgconfig = ErrorPackageConfig{
+		ZeroLogErrTraces:       cfg.ZeroLogErrTraces,
+		ZeroLogAllTraces:       cfg.ZeroLogAllTraces,
+		RecursiveErrors:        cfg.RecursiveErrors,
+		ExtendedGinOutput:      cfg.ExtendedGinOutput,
+		IncludeMetaInGinOutput: cfg.IncludeMetaInGinOutput,
+		ExtendGinOutput:        ego,
+		ExtendGinDataOutput:    egdo,
+	}
+
+	initialized = true
+}
+
+func warnOnPkgConfigNotInitialized() {
+	if !initialized {
+		fmt.Printf("\n")
+		fmt.Printf("%s\n", langext.StrRepeat("=", 80))
+		fmt.Printf("%s\n", "[WARNING] exerr package used without initializiation")
+		fmt.Printf("%s\n", "          call exerr.Init() in your main() function")
+		fmt.Printf("%s\n", langext.StrRepeat("=", 80))
+		fmt.Printf("\n")
+	}
+}

exerr/exerr.go

@@ -0,0 +1,298 @@
+package exerr
+
+import (
+	"github.com/rs/xid"
+	"github.com/rs/zerolog"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"reflect"
+	"strings"
+	"time"
+)
+
+type ExErr struct {
+	UniqueID string `json:"uniqueID"`
+
+	Timestamp time.Time     `json:"timestamp"`
+	Category  ErrorCategory `json:"category"`
+	Severity  ErrorSeverity `json:"severity"`
+	Type      ErrorType     `json:"type"`
+
+	StatusCode *int `json:"statusCode"`
+
+	Message        string `json:"message"`
+	WrappedErrType string `json:"wrappedErrType"`
+	WrappedErr     any    `json:"-"`
+	Caller         string `json:"caller"`
+
+	OriginalError *ExErr `json:"originalError"`
+
+	Meta MetaMap `json:"meta"`
+}
+
+func (ee *ExErr) Error() string {
+	return ee.Message
+}
+
+// Unwrap must be implemented so that some error.XXX methods work
+func (ee *ExErr) Unwrap() error {
+	if ee.OriginalError == nil {
+		return nil // this is neccessary - otherwise we return a wrapped nil and the `x == nil` comparison fails (= panic in errors.Is and other failures)
+	}
+	return ee.OriginalError
+}
+
+// Is must be implemented so that error.Is(x) works
+func (ee *ExErr) Is(e error) bool {
+	return IsFrom(ee, e)
+}
+
+// As must be implemented so that error.As(x) works
+//
+//goland:noinspection GoTypeAssertionOnErrors
+func (ee *ExErr) As(target any) bool {
+	if dstErr, ok := target.(*ExErr); ok {
+
+		if dst0, ok := ee.contains(dstErr); ok {
+			dstErr = dst0
+			return true
+		} else {
+			return false
+		}
+
+	} else {
+
+		val := reflect.ValueOf(target)
+
+		typStr := val.Type().Elem().String()
+
+		for curr := ee; curr != nil; curr = curr.OriginalError {
+			if curr.Category == CatForeign && curr.WrappedErrType == typStr && curr.WrappedErr != nil {
+				val.Elem().Set(reflect.ValueOf(curr.WrappedErr))
+				return true
+			}
+		}
+
+		return false
+	}
+}
+
+func (ee *ExErr) Log(evt *zerolog.Event) {
+	evt.Msg(ee.FormatLog(LogPrintFull))
+}
+
+func (ee *ExErr) FormatLog(lvl LogPrintLevel) string {
+	if lvl == LogPrintShort {
+
+		msg := ee.Message
+		if ee.OriginalError != nil && ee.OriginalError.Category == CatForeign {
+			msg = msg + " (" + strings.ReplaceAll(ee.OriginalError.Message, "\n", " ") + ")"
+		}
+
+		if ee.Type != TypeWrap {
+			return "[" + ee.Type.Key + "] " + msg
+		} else {
+			return msg
+		}
+
+	} else if lvl == LogPrintOverview {
+
+		str := "[" + ee.RecursiveType().Key + "] <" + ee.UniqueID + "> " + strings.ReplaceAll(ee.RecursiveMessage(), "\n", " ") + "\n"
+
+		indent := ""
+		for curr := ee; curr != nil; curr = curr.OriginalError {
+			indent += "  "
+
+			str += indent
+			str += "-> "
+			strmsg := strings.Trim(curr.Message, " \r\n\t")
+			if lbidx := strings.Index(curr.Message, "\n"); lbidx >= 0 {
+				strmsg = strmsg[0:lbidx]
+			}
+			strmsg = langext.StrLimit(strmsg, 61, "...")
+			str += strmsg
+			str += "\n"
+
+		}
+		return str
+
+	} else if lvl == LogPrintFull {
+
+		str := "[" + ee.RecursiveType().Key + "] <" + ee.UniqueID + "> " + strings.ReplaceAll(ee.RecursiveMessage(), "\n", " ") + "\n"
+
+		indent := ""
+		for curr := ee; curr != nil; curr = curr.OriginalError {
+			indent += "  "
+
+			etype := ee.Type.Key
+			if ee.Type == TypeWrap {
+				etype = "~"
+			}
+
+			str += indent
+			str += "-> ["
+			str += etype
+			if curr.Category == CatForeign {
+				str += "|Foreign"
+			}
+			str += "] "
+			str += strings.ReplaceAll(curr.Message, "\n", " ")
+			if curr.Caller != "" {
+				str += " (@ "
+				str += curr.Caller
+				str += ")"
+			}
+			str += "\n"
+
+			if curr.Meta.Any() {
+				meta := indent + "   {" + curr.Meta.FormatOneLine(240) + "}"
+				if len(meta) < 200 {
+					str += meta
+					str += "\n"
+				} else {
+					str += curr.Meta.FormatMultiLine(indent+"   ", "  ", 1024)
+					str += "\n"
+				}
+			}
+		}
+		return str
+
+	} else {
+
+		return "[?[" + ee.UniqueID + "]?]"
+
+	}
+}
+
+func (ee *ExErr) ShortLog(evt *zerolog.Event) {
+	ee.Meta.Apply(evt).Msg(ee.FormatLog(LogPrintShort))
+}
+
+// RecursiveMessage returns the message to show
+// = first error (top-down) that is not wrapping/foreign/empty
+func (ee *ExErr) RecursiveMessage() string {
+	for curr := ee; curr != nil; curr = curr.OriginalError {
+		if curr.Message != "" && curr.Category != CatWrap && curr.Category != CatForeign {
+			return curr.Message
+		}
+	}
+
+	// fallback to self
+	return ee.Message
+}
+
+// RecursiveType returns the statuscode to use
+// = first error (top-down) that is not wrapping/empty
+func (ee *ExErr) RecursiveType() ErrorType {
+	for curr := ee; curr != nil; curr = curr.OriginalError {
+		if curr.Type != TypeWrap {
+			return curr.Type
+		}
+
+	}
+
+	// fallback to self
+	return ee.Type
+}
+
+// RecursiveStatuscode returns the HTTP Statuscode to use
+// = first error (top-down) that has a statuscode set
+func (ee *ExErr) RecursiveStatuscode() *int {
+	for curr := ee; curr != nil; curr = curr.OriginalError {
+		if curr.StatusCode != nil {
+			return langext.Ptr(*curr.StatusCode)
+		}
+	}
+
+	return nil
+}
+
+// RecursiveCategory returns the ErrorCategory to use
+// = first error (top-down) that has a statuscode set
+func (ee *ExErr) RecursiveCategory() ErrorCategory {
+	for curr := ee; curr != nil; curr = curr.OriginalError {
+		if curr.Category != CatWrap {
+			return curr.Category
+		}
+	}
+
+	// fallback to <empty>
+	return ee.Category
+}
+
+// RecursiveMeta searches (top-down) for teh first error that has a meta value with teh specified key
+// and returns its value (or nil)
+func (ee *ExErr) RecursiveMeta(key string) *MetaValue {
+	for curr := ee; curr != nil; curr = curr.OriginalError {
+		if metaval, ok := curr.Meta[key]; ok {
+			return langext.Ptr(metaval)
+		}
+	}
+
+	return nil
+}
+
+// Depth returns the depth of recursively contained errors
+func (ee *ExErr) Depth() int {
+	if ee.OriginalError == nil {
+		return 1
+	} else {
+		return ee.OriginalError.Depth() + 1
+	}
+}
+
+// contains test if the supplied error is contained in this error (anywhere in the chain)
+func (ee *ExErr) contains(original *ExErr) (*ExErr, bool) {
+	if original == nil {
+		return nil, false
+	}
+
+	if ee == original {
+		return ee, true
+	}
+
+	for curr := ee; curr != nil; curr = curr.OriginalError {
+		if curr.equalsDirectProperties(curr) {
+			return curr, true
+		}
+	}
+
+	return nil, false
+}
+
+// equalsDirectProperties tests if ee and other are equals, but only looks at primary properties (not `OriginalError` or `Meta`)
+func (ee *ExErr) equalsDirectProperties(other *ExErr) bool {
+
+	if ee.UniqueID != other.UniqueID {
+		return false
+	}
+	if ee.Timestamp != other.Timestamp {
+		return false
+	}
+	if ee.Category != other.Category {
+		return false
+	}
+	if ee.Severity != other.Severity {
+		return false
+	}
+	if ee.Type != other.Type {
+		return false
+	}
+	if ee.StatusCode != other.StatusCode {
+		return false
+	}
+	if ee.Message != other.Message {
+		return false
+	}
+	if ee.WrappedErrType != other.WrappedErrType {
+		return false
+	}
+	if ee.Caller != other.Caller {
+		return false
+	}
+
+	return true
+}
+
+func newID() string {
+	return xid.New().String()
+}

exerr/exerr_test.go

@@ -0,0 +1,93 @@
+package exerr
+
+import (
+	"errors"
+	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"testing"
+)
+
+type golangErr struct {
+	Message string
+}
+
+func (g golangErr) Error() string {
+	return g.Message
+}
+
+type golangErr2 struct {
+	Message string
+}
+
+func (g golangErr2) Error() string {
+	return g.Message
+}
+
+type simpleError struct {
+}
+
+func (g simpleError) Error() string {
+	return "Something simple went wroong"
+}
+
+type simpleError2 struct {
+}
+
+func (g simpleError2) Error() string {
+	return "Something simple went wroong"
+}
+
+func TestExErrIs1(t *testing.T) {
+	e0 := simpleError{}
+
+	wrap := Wrap(e0, "something went wrong").Str("test", "123").Build()
+
+	tst.AssertTrue(t, errors.Is(wrap, simpleError{}))
+	tst.AssertFalse(t, errors.Is(wrap, golangErr{}))
+	tst.AssertFalse(t, errors.Is(wrap, golangErr{"error1"}))
+}
+
+func TestExErrIs2(t *testing.T) {
+	e0 := golangErr{"error1"}
+
+	wrap := Wrap(e0, "something went wrong").Str("test", "123").Build()
+
+	tst.AssertTrue(t, errors.Is(wrap, e0))
+	tst.AssertTrue(t, errors.Is(wrap, golangErr{"error1"}))
+	tst.AssertFalse(t, errors.Is(wrap, golangErr{"error2"}))
+	tst.AssertFalse(t, errors.Is(wrap, simpleError{}))
+}
+
+func TestExErrAs(t *testing.T) {
+
+	e0 := golangErr{"error1"}
+
+	w0 := Wrap(e0, "something went wrong").Str("test", "123").Build()
+
+	{
+		out := golangErr{}
+		ok := errors.As(w0, &out)
+		tst.AssertTrue(t, ok)
+		tst.AssertEqual(t, out.Message, "error1")
+	}
+
+	w1 := Wrap(w0, "outher error").Build()
+
+	{
+		out := golangErr{}
+		ok := errors.As(w1, &out)
+		tst.AssertTrue(t, ok)
+		tst.AssertEqual(t, out.Message, "error1")
+	}
+
+	{
+		out := golangErr2{}
+		ok := errors.As(w1, &out)
+		tst.AssertFalse(t, ok)
+	}
+
+	{
+		out := simpleError2{}
+		ok := errors.As(w1, &out)
+		tst.AssertFalse(t, ok)
+	}
+}

exerr/gin.go

@@ -0,0 +1,112 @@
+package exerr
+
+import (
+	"github.com/gin-gonic/gin"
+	json "gogs.mikescher.com/BlackForestBytes/goext/gojson"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"net/http"
+	"time"
+)
+
+func (ee *ExErr) toJson(depth int, applyExtendListener bool, outputMeta bool) langext.H {
+	ginJson := langext.H{}
+
+	if ee.UniqueID != "" {
+		ginJson["id"] = ee.UniqueID
+	}
+	if ee.Category != CatWrap {
+		ginJson["category"] = ee.Category
+	}
+	if ee.Type != TypeWrap {
+		ginJson["type"] = ee.Type
+	}
+	if ee.StatusCode != nil {
+		ginJson["statuscode"] = ee.StatusCode
+	}
+	if ee.Message != "" {
+		ginJson["message"] = ee.Message
+	}
+	if ee.Caller != "" {
+		ginJson["caller"] = ee.Caller
+	}
+	if ee.Severity != SevErr {
+		ginJson["severity"] = ee.Severity
+	}
+	if ee.Timestamp != (time.Time{}) {
+		ginJson["time"] = ee.Timestamp.Format(time.RFC3339)
+	}
+	if ee.WrappedErrType != "" {
+		ginJson["wrappedErrType"] = ee.WrappedErrType
+	}
+	if ee.OriginalError != nil {
+		ginJson["original"] = ee.OriginalError.toJson(depth+1, applyExtendListener, outputMeta)
+	}
+
+	if outputMeta {
+		metaJson := langext.H{}
+		for metaKey, metaVal := range ee.Meta {
+			metaJson[metaKey] = metaVal.rawValueForJson()
+		}
+		ginJson["meta"] = metaJson
+	}
+
+	if applyExtendListener {
+		pkgconfig.ExtendGinDataOutput(ee, depth, ginJson)
+	}
+
+	return ginJson
+}
+
+// ToAPIJson converts the ExError to a json object
+// (the same object as used in the Output(gin) method)
+//
+// Parameters:
+//   - [applyExtendListener]:  if false the pkgconfig.ExtendGinOutput / pkgconfig.ExtendGinDataOutput will not be applied
+//   - [includeWrappedErrors]: if false we do not include the recursive/wrapped errors in `__data`
+//   - [includeMetaFields]:    if true  we also include meta-values (aka from `.Str(key, value).Build()`), needs includeWrappedErrors=true
+func (ee *ExErr) ToAPIJson(applyExtendListener bool, includeWrappedErrors bool, includeMetaFields bool) langext.H {
+
+	apiOutput := langext.H{
+		"errorid":   ee.UniqueID,
+		"message":   ee.RecursiveMessage(),
+		"errorcode": ee.RecursiveType().Key,
+		"category":  ee.RecursiveCategory().Category,
+	}
+
+	if includeWrappedErrors {
+		apiOutput["__data"] = ee.toJson(0, applyExtendListener, includeMetaFields)
+	}
+
+	if applyExtendListener {
+		pkgconfig.ExtendGinOutput(ee, apiOutput)
+	}
+
+	return apiOutput
+}
+
+func (ee *ExErr) Output(g *gin.Context) {
+
+	warnOnPkgConfigNotInitialized()
+
+	var statuscode = http.StatusInternalServerError
+
+	var baseCat = ee.RecursiveCategory()
+	var baseType = ee.RecursiveType()
+	var baseStatuscode = ee.RecursiveStatuscode()
+
+	if baseCat == CatUser {
+		statuscode = http.StatusBadRequest
+	} else if baseCat == CatSystem {
+		statuscode = http.StatusInternalServerError
+	}
+
+	if baseStatuscode != nil {
+		statuscode = *ee.StatusCode
+	} else if baseType.DefaultStatusCode != nil {
+		statuscode = *baseType.DefaultStatusCode
+	}
+
+	ginOutput := ee.ToAPIJson(true, pkgconfig.ExtendedGinOutput, pkgconfig.IncludeMetaInGinOutput)
+
+	g.Render(statuscode, json.GoJsonRender{Data: ginOutput, NilSafeSlices: true, NilSafeMaps: true})
+}

exerr/helper.go

@@ -0,0 +1,88 @@
+package exerr
+
+import "fmt"
+
+// IsType test if the supplied error is of the specified ErrorType.
+func IsType(err error, errType ErrorType) bool {
+	if err == nil {
+		return false
+	}
+
+	bmerr := FromError(err)
+	for bmerr != nil {
+		if bmerr.Type == errType {
+			return true
+		}
+		bmerr = bmerr.OriginalError
+	}
+
+	return false
+}
+
+// IsFrom test if the supplied error stems originally from original
+func IsFrom(e error, original error) bool {
+	if e == nil {
+		return false
+	}
+
+	//goland:noinspection GoDirectComparisonOfErrors
+	if e == original {
+		return true
+	}
+
+	bmerr := FromError(e)
+	for bmerr == nil {
+		return false
+	}
+
+	for curr := bmerr; curr != nil; curr = curr.OriginalError {
+		if curr.Category == CatForeign && curr.Message == original.Error() && curr.WrappedErrType == fmt.Sprintf("%T", original) {
+			return true
+		}
+	}
+
+	return false
+}
+
+// HasSourceMessage tests if the supplied error stems originally from an error with the message msg
+func HasSourceMessage(e error, msg string) bool {
+	if e == nil {
+		return false
+	}
+
+	bmerr := FromError(e)
+	for bmerr == nil {
+		return false
+	}
+
+	for curr := bmerr; curr != nil; curr = curr.OriginalError {
+		if curr.OriginalError == nil && curr.Message == msg {
+			return true
+		}
+	}
+
+	return false
+}
+
+func MessageMatch(e error, matcher func(string) bool) bool {
+	if e == nil {
+		return false
+	}
+
+	if matcher(e.Error()) {
+		return true
+	}
+
+	bmerr := FromError(e)
+	for bmerr == nil {
+		return false
+	}
+
+	for curr := bmerr; curr != nil; curr = curr.OriginalError {
+		if matcher(curr.Message) {
+			return true
+		}
+	}
+
+	return false
+}

exerr/listener.go

@@ -0,0 +1,37 @@
+package exerr
+
+import (
+	"sync"
+)
+
+type Method string
+
+const (
+	MethodOutput Method = "OUTPUT"
+	MethodPrint  Method = "PRINT"
+	MethodBuild  Method = "BUILD"
+	MethodFatal  Method = "FATAL"
+)
+
+type Listener = func(method Method, v *ExErr)
+
+var listenerLock = sync.Mutex{}
+var listener = make([]Listener, 0)
+
+func RegisterListener(l Listener) {
+	listenerLock.Lock()
+	defer listenerLock.Unlock()
+
+	listener = append(listener, l)
+}
+
+func (b *Builder) CallListener(m Method) {
+	valErr := b.errorData
+
+	listenerLock.Lock()
+	defer listenerLock.Unlock()
+
+	for _, v := range listener {
+		v(m, valErr)
+	}
+}

exerr/meta.go

@@ -0,0 +1,713 @@
+package exerr
+
+import (
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"github.com/rs/zerolog"
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/bson/primitive"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// This is a buffed up map[string]any
+// we also save type information of the map-values
+// which allows us to deserialize them back into te correct types later
+
+type MetaMap map[string]MetaValue
+
+type metaDataType string
+
+const (
+	MDTString      metaDataType = "String"
+	MDTStringPtr   metaDataType = "StringPtr"
+	MDTInt         metaDataType = "Int"
+	MDTInt8        metaDataType = "Int8"
+	MDTInt16       metaDataType = "Int16"
+	MDTInt32       metaDataType = "Int32"
+	MDTInt64       metaDataType = "Int64"
+	MDTFloat32     metaDataType = "Float32"
+	MDTFloat64     metaDataType = "Float64"
+	MDTBool        metaDataType = "Bool"
+	MDTBytes       metaDataType = "Bytes"
+	MDTObjectID    metaDataType = "ObjectID"
+	MDTTime        metaDataType = "Time"
+	MDTDuration    metaDataType = "Duration"
+	MDTStringArray metaDataType = "StringArr"
+	MDTIntArray    metaDataType = "IntArr"
+	MDTInt32Array  metaDataType = "Int32Arr"
+	MDTID          metaDataType = "ID"
+	MDTAny         metaDataType = "Interface"
+	MDTNil         metaDataType = "Nil"
+	MDTEnum        metaDataType = "Enum"
+)
+
+type MetaValue struct {
+	DataType metaDataType `json:"dataType"`
+	Value    interface{}  `json:"value"`
+}
+
+type metaValueSerialization struct {
+	DataType metaDataType `bson:"dataType"`
+	Value    string       `bson:"value"`
+	Raw      interface{}  `bson:"raw"`
+}
+
+func (v MetaValue) SerializeValue() (string, error) {
+	switch v.DataType {
+	case MDTString:
+		return v.Value.(string), nil
+	case MDTID:
+		return v.Value.(IDWrap).Serialize(), nil
+	case MDTAny:
+		return v.Value.(AnyWrap).Serialize(), nil
+	case MDTStringPtr:
+		if langext.IsNil(v.Value) {
+			return "#", nil
+		}
+		r := v.Value.(*string)
+		if r != nil {
+			return "*" + *r, nil
+		} else {
+			return "#", nil
+		}
+	case MDTInt:
+		return strconv.Itoa(v.Value.(int)), nil
+	case MDTInt8:
+		return strconv.FormatInt(int64(v.Value.(int8)), 10), nil
+	case MDTInt16:
+		return strconv.FormatInt(int64(v.Value.(int16)), 10), nil
+	case MDTInt32:
+		return strconv.FormatInt(int64(v.Value.(int32)), 10), nil
+	case MDTInt64:
+		return strconv.FormatInt(v.Value.(int64), 10), nil
+	case MDTFloat32:
+		return strconv.FormatFloat(float64(v.Value.(float32)), 'X', -1, 32), nil
+	case MDTFloat64:
+		return strconv.FormatFloat(v.Value.(float64), 'X', -1, 64), nil
+	case MDTBool:
+		if v.Value.(bool) {
+			return "true", nil
+		} else {
+			return "false", nil
+		}
+	case MDTBytes:
+		return hex.EncodeToString(v.Value.([]byte)), nil
+	case MDTObjectID:
+		return v.Value.(primitive.ObjectID).Hex(), nil
+	case MDTTime:
+		return strconv.FormatInt(v.Value.(time.Time).Unix(), 10) + "|" + strconv.FormatInt(int64(v.Value.(time.Time).Nanosecond()), 10), nil
+	case MDTDuration:
+		return v.Value.(time.Duration).String(), nil
+	case MDTStringArray:
+		if langext.IsNil(v.Value) {
+			return "#", nil
+		}
+		r, err := json.Marshal(v.Value.([]string))
+		if err != nil {
+			return "", err
+		}
+		return string(r), nil
+	case MDTIntArray:
+		if langext.IsNil(v.Value) {
+			return "#", nil
+		}
+		r, err := json.Marshal(v.Value.([]int))
+		if err != nil {
+			return "", err
+		}
+		return string(r), nil
+	case MDTInt32Array:
+		if langext.IsNil(v.Value) {
+			return "#", nil
+		}
+		r, err := json.Marshal(v.Value.([]int32))
+		if err != nil {
+			return "", err
+		}
+		return string(r), nil
+	case MDTNil:
+		return "", nil
+	case MDTEnum:
+		return v.Value.(EnumWrap).Serialize(), nil
+	}
+	return "", errors.New("Unknown type: " + string(v.DataType))
+}
+
+func (v MetaValue) ShortString(lim int) string {
+	switch v.DataType {
+	case MDTString:
+		r := strings.ReplaceAll(v.Value.(string), "\r", "")
+		r = strings.ReplaceAll(r, "\n", "\\n")
+		r = strings.ReplaceAll(r, "\t", "\\t")
+		return langext.StrLimit(r, lim, "...")
+	case MDTID:
+		return v.Value.(IDWrap).String()
+	case MDTAny:
+		return v.Value.(AnyWrap).String()
+	case MDTStringPtr:
+		if langext.IsNil(v.Value) {
+			return "<<null>>"
+		}
+		r := langext.CoalesceString(v.Value.(*string), "<<null>>")
+		r = strings.ReplaceAll(r, "\r", "")
+		r = strings.ReplaceAll(r, "\n", "\\n")
+		r = strings.ReplaceAll(r, "\t", "\\t")
+		return langext.StrLimit(r, lim, "...")
+	case MDTInt:
+		return strconv.Itoa(v.Value.(int))
+	case MDTInt8:
+		return strconv.FormatInt(int64(v.Value.(int8)), 10)
+	case MDTInt16:
+		return strconv.FormatInt(int64(v.Value.(int16)), 10)
+	case MDTInt32:
+		return strconv.FormatInt(int64(v.Value.(int32)), 10)
+	case MDTInt64:
+		return strconv.FormatInt(v.Value.(int64), 10)
+	case MDTFloat32:
+		return strconv.FormatFloat(float64(v.Value.(float32)), 'g', 4, 32)
+	case MDTFloat64:
+		return strconv.FormatFloat(v.Value.(float64), 'g', 4, 64)
+	case MDTBool:
+		return fmt.Sprintf("%v", v.Value.(bool))
+	case MDTBytes:
+		return langext.StrLimit(hex.EncodeToString(v.Value.([]byte)), lim, "...")
+	case MDTObjectID:
+		return v.Value.(primitive.ObjectID).Hex()
+	case MDTTime:
+		return v.Value.(time.Time).Format(time.RFC3339)
+	case MDTDuration:
+		return v.Value.(time.Duration).String()
+	case MDTStringArray:
+		if langext.IsNil(v.Value) {
+			return "<<null>>"
+		}
+		r, err := json.Marshal(v.Value.([]string))
+		if err != nil {
+			return "(err)"
+		}
+		return langext.StrLimit(string(r), lim, "...")
+	case MDTIntArray:
+		if langext.IsNil(v.Value) {
+			return "<<null>>"
+		}
+		r, err := json.Marshal(v.Value.([]int))
+		if err != nil {
+			return "(err)"
+		}
+		return langext.StrLimit(string(r), lim, "...")
+	case MDTInt32Array:
+		if langext.IsNil(v.Value) {
+			return "<<null>>"
+		}
+		r, err := json.Marshal(v.Value.([]int32))
+		if err != nil {
+			return "(err)"
+		}
+		return langext.StrLimit(string(r), lim, "...")
+	case MDTNil:
+		return "<<null>>"
+	case MDTEnum:
+		return v.Value.(EnumWrap).String()
+	}
+	return "(err)"
+}
+
+func (v MetaValue) Apply(key string, evt *zerolog.Event) *zerolog.Event {
+	switch v.DataType {
+	case MDTString:
+		return evt.Str(key, v.Value.(string))
+	case MDTID:
+		return evt.Str(key, v.Value.(IDWrap).Value)
+	case MDTAny:
+		if v.Value.(AnyWrap).IsError {
+			return evt.Str(key, "(err)")
+		} else {
+			return evt.Str(key, v.Value.(AnyWrap).Json)
+		}
+	case MDTStringPtr:
+		if langext.IsNil(v.Value) {
+			return evt.Str(key, "<<null>>")
+		}
+		return evt.Str(key, langext.CoalesceString(v.Value.(*string), "<<null>>"))
+	case MDTInt:
+		return evt.Int(key, v.Value.(int))
+	case MDTInt8:
+		return evt.Int8(key, v.Value.(int8))
+	case MDTInt16:
+		return evt.Int16(key, v.Value.(int16))
+	case MDTInt32:
+		return evt.Int32(key, v.Value.(int32))
+	case MDTInt64:
+		return evt.Int64(key, v.Value.(int64))
+	case MDTFloat32:
+		return evt.Float32(key, v.Value.(float32))
+	case MDTFloat64:
+		return evt.Float64(key, v.Value.(float64))
+	case MDTBool:
+		return evt.Bool(key, v.Value.(bool))
+	case MDTBytes:
+		return evt.Bytes(key, v.Value.([]byte))
+	case MDTObjectID:
+		return evt.Str(key, v.Value.(primitive.ObjectID).Hex())
+	case MDTTime:
+		return evt.Time(key, v.Value.(time.Time))
+	case MDTDuration:
+		return evt.Dur(key, v.Value.(time.Duration))
+	case MDTStringArray:
+		if langext.IsNil(v.Value) {
+			return evt.Strs(key, nil)
+		}
+		return evt.Strs(key, v.Value.([]string))
+	case MDTIntArray:
+		if langext.IsNil(v.Value) {
+			return evt.Ints(key, nil)
+		}
+		return evt.Ints(key, v.Value.([]int))
+	case MDTInt32Array:
+		if langext.IsNil(v.Value) {
+			return evt.Ints32(key, nil)
+		}
+		return evt.Ints32(key, v.Value.([]int32))
+	case MDTNil:
+		return evt.Str(key, "<<null>>")
+	case MDTEnum:
+		if v.Value.(EnumWrap).IsNil {
+			return evt.Any(key, nil)
+		} else if v.Value.(EnumWrap).ValueRaw != nil {
+			return evt.Any(key, v.Value.(EnumWrap).ValueRaw)
+		} else {
+			return evt.Str(key, v.Value.(EnumWrap).ValueString)
+		}
+	}
+	return evt.Str(key, "(err)")
+}
+
+func (v MetaValue) MarshalJSON() ([]byte, error) {
+	str, err := v.SerializeValue()
+	if err != nil {
+		return nil, err
+	}
+	return json.Marshal(string(v.DataType) + ":" + str)
+}
+
+func (v *MetaValue) UnmarshalJSON(data []byte) error {
+	var str = ""
+	err := json.Unmarshal(data, &str)
+	if err != nil {
+		return err
+	}
+
+	split := strings.SplitN(str, ":", 2)
+	if len(split) != 2 {
+		return errors.New("failed to decode MetaValue: '" + str + "'")
+	}
+
+	return v.Deserialize(split[1], metaDataType(split[0]))
+}
+
+func (v MetaValue) MarshalBSON() ([]byte, error) {
+	serval, err := v.SerializeValue()
+	if err != nil {
+		return nil, Wrap(err, "failed to bson-marshal MetaValue (serialize)").Build()
+	}
+
+	// this is an kinda ugly hack - but serialization to mongodb and back can loose the correct type information....
+	bin, err := bson.Marshal(metaValueSerialization{
+		DataType: v.DataType,
+		Value:    serval,
+		Raw:      v.Value,
+	})
+	if err != nil {
+		return nil, Wrap(err, "failed to bson-marshal MetaValue (marshal)").Build()
+	}
+
+	return bin, nil
+}
+
+func (v *MetaValue) UnmarshalBSON(bytes []byte) error {
+	var serval metaValueSerialization
+	err := bson.Unmarshal(bytes, &serval)
+	if err != nil {
+		return Wrap(err, "failed to bson-unmarshal MetaValue (unmarshal)").Build()
+	}
+
+	err = v.Deserialize(serval.Value, serval.DataType)
+	if err != nil {
+		return Wrap(err, "failed to deserialize MetaValue from bson").Str("raw", serval.Value).Build()
+	}
+
+	return nil
+}
+
+func (v *MetaValue) Deserialize(value string, datatype metaDataType) error {
+	switch datatype {
+	case MDTString:
+		v.Value = value
+		v.DataType = datatype
+		return nil
+	case MDTID:
+		v.Value = deserializeIDWrap(value)
+		v.DataType = datatype
+		return nil
+	case MDTAny:
+		v.Value = deserializeAnyWrap(value)
+		v.DataType = datatype
+		return nil
+	case MDTStringPtr:
+		if len(value) <= 0 || (value[0] != '*' && value[0] != '#') {
+			return errors.New("Invalid StringPtr: " + value)
+		} else if value == "#" {
+			v.Value = nil
+			v.DataType = datatype
+			return nil
+		} else {
+			v.Value = langext.Ptr(value[1:])
+			v.DataType = datatype
+			return nil
+		}
+	case MDTInt:
+		pv, err := strconv.ParseInt(value, 10, 0)
+		if err != nil {
+			return err
+		}
+		v.Value = int(pv)
+		v.DataType = datatype
+		return nil
+	case MDTInt8:
+		pv, err := strconv.ParseInt(value, 10, 8)
+		if err != nil {
+			return err
+		}
+		v.Value = int8(pv)
+		v.DataType = datatype
+		return nil
+	case MDTInt16:
+		pv, err := strconv.ParseInt(value, 10, 16)
+		if err != nil {
+			return err
+		}
+		v.Value = int16(pv)
+		v.DataType = datatype
+		return nil
+	case MDTInt32:
+		pv, err := strconv.ParseInt(value, 10, 32)
+		if err != nil {
+			return err
+		}
+		v.Value = int32(pv)
+		v.DataType = datatype
+		return nil
+	case MDTInt64:
+		pv, err := strconv.ParseInt(value, 10, 64)
+		if err != nil {
+			return err
+		}
+		v.Value = pv
+		v.DataType = datatype
+		return nil
+	case MDTFloat32:
+		pv, err := strconv.ParseFloat(value, 64)
+		if err != nil {
+			return err
+		}
+		v.Value = float32(pv)
+		v.DataType = datatype
+		return nil
+	case MDTFloat64:
+		pv, err := strconv.ParseFloat(value, 64)
+		if err != nil {
+			return err
+		}
+		v.Value = pv
+		v.DataType = datatype
+		return nil
+	case MDTBool:
+		if value == "true" {
+			v.Value = true
+			v.DataType = datatype
+			return nil
+		}
+		if value == "false" {
+			v.Value = false
+			v.DataType = datatype
+			return nil
+		}
+		return errors.New("invalid bool value: " + value)
+	case MDTBytes:
+		r, err := hex.DecodeString(value)
+		if err != nil {
+			return err
+		}
+		v.Value = r
+		v.DataType = datatype
+		return nil
+	case MDTObjectID:
+		r, err := primitive.ObjectIDFromHex(value)
+		if err != nil {
+			return err
+		}
+		v.Value = r
+		v.DataType = datatype
+		return nil
+	case MDTTime:
+		ps := strings.Split(value, "|")
+		if len(ps) != 2 {
+			return errors.New("invalid time.time: " + value)
+		}
+		p1, err := strconv.ParseInt(ps[0], 10, 64)
+		if err != nil {
+			return err
+		}
+		p2, err := strconv.ParseInt(ps[1], 10, 32)
+		if err != nil {
+			return err
+		}
+		v.Value = time.Unix(p1, p2)
+		v.DataType = datatype
+		return nil
+	case MDTDuration:
+		r, err := time.ParseDuration(value)
+		if err != nil {
+			return err
+		}
+		v.Value = r
+		v.DataType = datatype
+		return nil
+	case MDTStringArray:
+		if value == "#" {
+			v.Value = nil
+			v.DataType = datatype
+			return nil
+		}
+		pj := make([]string, 0)
+		err := json.Unmarshal([]byte(value), &pj)
+		if err != nil {
+			return err
+		}
+		v.Value = pj
+		v.DataType = datatype
+		return nil
+	case MDTIntArray:
+		if value == "#" {
+			v.Value = nil
+			v.DataType = datatype
+			return nil
+		}
+		pj := make([]int, 0)
+		err := json.Unmarshal([]byte(value), &pj)
+		if err != nil {
+			return err
+		}
+		v.Value = pj
+		v.DataType = datatype
+		return nil
+	case MDTInt32Array:
+		if value == "#" {
+			v.Value = nil
+			v.DataType = datatype
+			return nil
+		}
+		pj := make([]int32, 0)
+		err := json.Unmarshal([]byte(value), &pj)
+		if err != nil {
+			return err
+		}
+		v.Value = pj
+		v.DataType = datatype
+		return nil
+	case MDTNil:
+		v.Value = nil
+		v.DataType = datatype
+		return nil
+	case MDTEnum:
+		v.Value = deserializeEnumWrap(value)
+		v.DataType = datatype
+		return nil
+	}
+	return errors.New("Unknown type: " + string(datatype))
+}
+
+func (v MetaValue) ValueString() string {
+	switch v.DataType {
+	case MDTString:
+		return v.Value.(string)
+	case MDTID:
+		return v.Value.(IDWrap).String()
+	case MDTAny:
+		return v.Value.(AnyWrap).String()
+	case MDTStringPtr:
+		if langext.IsNil(v.Value) {
+			return "<<null>>"
+		}
+		return langext.CoalesceString(v.Value.(*string), "<<null>>")
+	case MDTInt:
+		return strconv.Itoa(v.Value.(int))
+	case MDTInt8:
+		return strconv.FormatInt(int64(v.Value.(int8)), 10)
+	case MDTInt16:
+		return strconv.FormatInt(int64(v.Value.(int16)), 10)
+	case MDTInt32:
+		return strconv.FormatInt(int64(v.Value.(int32)), 10)
+	case MDTInt64:
+		return strconv.FormatInt(v.Value.(int64), 10)
+	case MDTFloat32:
+		return strconv.FormatFloat(float64(v.Value.(float32)), 'g', 4, 32)
+	case MDTFloat64:
+		return strconv.FormatFloat(v.Value.(float64), 'g', 4, 64)
+	case MDTBool:
+		return fmt.Sprintf("%v", v.Value.(bool))
+	case MDTBytes:
+		return hex.EncodeToString(v.Value.([]byte))
+	case MDTObjectID:
+		return v.Value.(primitive.ObjectID).Hex()
+	case MDTTime:
+		return v.Value.(time.Time).Format(time.RFC3339Nano)
+	case MDTDuration:
+		return v.Value.(time.Duration).String()
+	case MDTStringArray:
+		if langext.IsNil(v.Value) {
+			return "<<null>>"
+		}
+		r, err := json.MarshalIndent(v.Value.([]string), "", "  ")
+		if err != nil {
+			return "(err)"
+		}
+		return string(r)
+	case MDTIntArray:
+		if langext.IsNil(v.Value) {
+			return "<<null>>"
+		}
+		r, err := json.MarshalIndent(v.Value.([]int), "", "  ")
+		if err != nil {
+			return "(err)"
+		}
+		return string(r)
+	case MDTInt32Array:
+		if langext.IsNil(v.Value) {
+			return "<<null>>"
+		}
+		r, err := json.MarshalIndent(v.Value.([]int32), "", "  ")
+		if err != nil {
+			return "(err)"
+		}
+		return string(r)
+	case MDTNil:
+		return "<<null>>"
+	case MDTEnum:
+		return v.Value.(EnumWrap).String()
+	}
+	return "(err)"
+}
+
+// rawValueForJson returns most-of-the-time the `Value` field
+// but for some datatyes we do special processing
+// all, so we can pluck the output value in json.Marshal without any suprises
+func (v MetaValue) rawValueForJson() any {
+	if v.DataType == MDTAny {
+		if v.Value.(AnyWrap).IsNil {
+			return nil
+		}
+		return v.Value.(AnyWrap).Serialize()
+	}
+	if v.DataType == MDTID {
+		if v.Value.(IDWrap).IsNil {
+			return nil
+		}
+		return v.Value.(IDWrap).Value
+	}
+	if v.DataType == MDTBytes {
+		return hex.EncodeToString(v.Value.([]byte))
+	}
+	if v.DataType == MDTDuration {
+		return v.Value.(time.Duration).String()
+	}
+	if v.DataType == MDTTime {
+		return v.Value.(time.Time).Format(time.RFC3339Nano)
+	}
+	if v.DataType == MDTObjectID {
+		return v.Value.(primitive.ObjectID).Hex()
+	}
+	if v.DataType == MDTNil {
+		return nil
+	}
+	if v.DataType == MDTEnum {
+		if v.Value.(EnumWrap).IsNil {
+			return nil
+		}
+		if v.Value.(EnumWrap).ValueRaw != nil {
+			return v.Value.(EnumWrap).ValueRaw
+		}
+		return v.Value.(EnumWrap).ValueString
+	}
+	return v.Value
+}
+
+func (mm MetaMap) FormatOneLine(singleMaxLen int) string {
+	r := ""
+
+	i := 0
+	for key, val := range mm {
+		if i > 0 {
+			r += ", "
+		}
+
+		r += "\"" + key + "\""
+		r += ": "
+		r += "\"" + val.ShortString(singleMaxLen) + "\""
+
+		i++
+	}
+
+	return r
+}
+
+func (mm MetaMap) FormatMultiLine(indentFront string, indentKeys string, maxLenValue int) string {
+	r := ""
+
+	r += indentFront + "{" + "\n"
+	for key, val := range mm {
+		if key == "gin.body" {
+			continue
+		}
+
+		r += indentFront
+		r += indentKeys
+		r += "\"" + key + "\""
+		r += ": "
+		r += "\"" + val.ShortString(maxLenValue) + "\""
+		r += ",\n"
+	}
+	r += indentFront + "}"
+
+	return r
+}
+
+func (mm MetaMap) Any() bool {
+	return len(mm) > 0
+}
+
+func (mm MetaMap) Apply(evt *zerolog.Event) *zerolog.Event {
+	for key, val := range mm {
+		evt = val.Apply(key, evt)
+	}
+	return evt
+}
+
+func (mm MetaMap) add(key string, mdtype metaDataType, val interface{}) {
+	if _, ok := mm[key]; !ok {
+		mm[key] = MetaValue{DataType: mdtype, Value: val}
+		return
+	}
+	for i := 2; ; i++ {
+		realkey := key + "-" + strconv.Itoa(i)
+		if _, ok := mm[realkey]; !ok {
+			mm[realkey] = MetaValue{DataType: mdtype, Value: val}
+			return
+		}
+	}
+}

exerr/stacktrace.go

@@ -0,0 +1,14 @@
+package exerr
+
+import (
+	"fmt"
+	"runtime"
+)
+
+func callername(skip int) string {
+	pc := make([]uintptr, 15)
+	n := runtime.Callers(skip+2, pc)
+	frames := runtime.CallersFrames(pc[:n])
+	frame, _ := frames.Next()
+	return fmt.Sprintf("%s:%d %s", frame.File, frame.Line, frame.Function)
+}

exerr/typeWrapper.go

@@ -0,0 +1,189 @@
+package exerr
+
+import (
+	"encoding/json"
+	"fmt"
+	"github.com/rs/zerolog/log"
+	"gogs.mikescher.com/BlackForestBytes/goext/enums"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"strings"
+)
+
+//
+// These are wrapper objects, because for some metadata-types we need to serialize a bit more complex data
+// (eg thy actual type for ID objects, or the json representation for any types)
+//
+
+type IDWrap struct {
+	Type  string
+	Value string
+	IsNil bool
+}
+
+func newIDWrap(val fmt.Stringer) IDWrap {
+	t := fmt.Sprintf("%T", val)
+	arr := strings.Split(t, ".")
+	if len(arr) > 0 {
+		t = arr[len(arr)-1]
+	}
+
+	if langext.IsNil(val) {
+		return IDWrap{Type: t, Value: "", IsNil: true}
+	}
+
+	v := val.String()
+	return IDWrap{Type: t, Value: v, IsNil: false}
+}
+
+func (w IDWrap) Serialize() string {
+	if w.IsNil {
+		return "!nil" + ":" + w.Type
+	}
+	return w.Type + ":" + w.Value
+}
+
+func (w IDWrap) String() string {
+	if w.IsNil {
+		return w.Type + "<<nil>>"
+	}
+	return w.Type + "(" + w.Value + ")"
+}
+
+func deserializeIDWrap(v string) IDWrap {
+	r := strings.SplitN(v, ":", 2)
+
+	if len(r) == 2 && r[0] == "!nil" {
+		return IDWrap{Type: r[1], Value: v, IsNil: true}
+	}
+
+	if len(r) == 0 {
+		return IDWrap{}
+	} else if len(r) == 1 {
+		return IDWrap{Type: "", Value: v, IsNil: false}
+	} else {
+		return IDWrap{Type: r[0], Value: r[1], IsNil: false}
+	}
+}
+
+type AnyWrap struct {
+	Type    string
+	Json    string
+	IsError bool
+	IsNil   bool
+}
+
+func newAnyWrap(val any) (result AnyWrap) {
+	result = AnyWrap{Type: "", Json: "", IsError: true, IsNil: false} // ensure a return in case of recover()
+
+	defer func() {
+		if err := recover(); err != nil {
+			// send error should never crash our program
+			log.Error().Interface("err", err).Msg("Panic while trying to marshal anywrap ( bmerror.Interface )")
+		}
+	}()
+
+	t := fmt.Sprintf("%T", val)
+
+	if langext.IsNil(val) {
+		return AnyWrap{Type: t, Json: "", IsError: false, IsNil: true}
+	}
+
+	j, err := json.Marshal(val)
+	if err == nil {
+		return AnyWrap{Type: t, Json: string(j), IsError: false, IsNil: false}
+	} else {
+		return AnyWrap{Type: t, Json: "", IsError: true, IsNil: false}
+	}
+}
+
+func (w AnyWrap) Serialize() string {
+	if w.IsError {
+		return "ERR" + ":" + w.Type + ":" + w.Json
+	} else if w.IsNil {
+		return "NIL" + ":" + w.Type + ":" + w.Json
+	} else {
+		return "OK" + ":" + w.Type + ":" + w.Json
+	}
+}
+
+func (w AnyWrap) String() string {
+	if w.IsError {
+		return "(error)"
+	} else if w.IsNil {
+		return "(nil)"
+	} else {
+		return w.Json
+	}
+}
+
+func deserializeAnyWrap(v string) AnyWrap {
+	r := strings.SplitN(v, ":", 3)
+	if len(r) != 3 {
+		return AnyWrap{IsError: true, Type: "", Json: "", IsNil: false}
+	} else {
+		if r[0] == "OK" {
+			return AnyWrap{IsError: false, Type: r[1], Json: r[2], IsNil: false}
+		} else if r[0] == "ERR" {
+			return AnyWrap{IsError: true, Type: r[1], Json: r[2], IsNil: false}
+		} else if r[0] == "NIL" {
+			return AnyWrap{IsError: false, Type: r[1], Json: "", IsNil: true}
+		} else {
+			return AnyWrap{IsError: true, Type: "", Json: "", IsNil: false}
+		}
+	}
+}
+
+type EnumWrap struct {
+	Type        string
+	ValueString string
+	ValueRaw    enums.Enum // `ValueRaw` is lost during serialization roundtrip
+	IsNil       bool
+}
+
+func newEnumWrap(val enums.Enum) EnumWrap {
+	t := fmt.Sprintf("%T", val)
+	arr := strings.Split(t, ".")
+	if len(arr) > 0 {
+		t = arr[len(arr)-1]
+	}
+
+	if langext.IsNil(val) {
+		return EnumWrap{Type: t, ValueString: "", ValueRaw: val, IsNil: true}
+	}
+
+	if enumstr, ok := val.(enums.StringEnum); ok {
+		return EnumWrap{Type: t, ValueString: enumstr.String(), ValueRaw: val, IsNil: false}
+	}
+
+	return EnumWrap{Type: t, ValueString: fmt.Sprintf("%v", val), ValueRaw: val, IsNil: false}
+}
+
+func (w EnumWrap) Serialize() string {
+	if w.IsNil {
+		return "!nil" + ":" + w.Type
+	}
+	return w.Type + ":" + w.ValueString
+}
+
+func (w EnumWrap) String() string {
+	if w.IsNil {
+		return w.Type + "<<nil>>"
+	}
+	return "[" + w.Type + "] " + w.ValueString
+}
+
+func deserializeEnumWrap(v string) EnumWrap {
+	r := strings.SplitN(v, ":", 2)
+
+	if len(r) == 2 && r[0] == "!nil" {
+		return EnumWrap{Type: r[1], ValueString: v, ValueRaw: nil, IsNil: true}
+	}
+
+	if len(r) == 0 {
+		return EnumWrap{}
+	} else if len(r) == 1 {
+		return EnumWrap{Type: "", ValueString: v, ValueRaw: nil, IsNil: false}
+	} else {
+		return EnumWrap{Type: r[0], ValueString: r[1], ValueRaw: nil, IsNil: false}
+	}
+}

ginext/appContext.go

@@ -0,0 +1,59 @@
+package ginext
+
+import (
+	"context"
+	"github.com/gin-gonic/gin"
+	"time"
+)
+
+type AppContext struct {
+	inner      context.Context
+	cancelFunc context.CancelFunc
+	cancelled  bool
+	GinContext *gin.Context
+}
+
+func CreateAppContext(g *gin.Context, innerCtx context.Context, cancelFn context.CancelFunc) *AppContext {
+	for key, value := range g.Keys {
+		innerCtx = context.WithValue(innerCtx, key, value)
+	}
+	return &AppContext{
+		inner:      innerCtx,
+		cancelFunc: cancelFn,
+		cancelled:  false,
+		GinContext: g,
+	}
+}
+
+func (ac *AppContext) Deadline() (deadline time.Time, ok bool) {
+	return ac.inner.Deadline()
+}
+
+func (ac *AppContext) Done() <-chan struct{} {
+	return ac.inner.Done()
+}
+
+func (ac *AppContext) Err() error {
+	return ac.inner.Err()
+}
+
+func (ac *AppContext) Value(key any) any {
+	return ac.inner.Value(key)
+}
+
+func (ac *AppContext) Set(key, value any) {
+	ac.inner = context.WithValue(ac.inner, key, value)
+}
+
+func (ac *AppContext) Cancel() {
+	ac.cancelled = true
+	ac.cancelFunc()
+}
+
+func (ac *AppContext) RequestURI() string {
+	if ac.GinContext != nil && ac.GinContext.Request != nil {
+		return ac.GinContext.Request.Method + " :: " + ac.GinContext.Request.RequestURI
+	} else {
+		return ""
+	}
+}

ginext/commonHandler.go

@@ -0,0 +1,23 @@
+package ginext
+
+import (
+	"net/http"
+)
+
+func RedirectFound(newuri string) WHandlerFunc {
+	return func(pctx PreContext) HTTPResponse {
+		return Redirect(http.StatusFound, newuri)
+	}
+}
+
+func RedirectTemporary(newuri string) WHandlerFunc {
+	return func(pctx PreContext) HTTPResponse {
+		return Redirect(http.StatusTemporaryRedirect, newuri)
+	}
+}
+
+func RedirectPermanent(newuri string) WHandlerFunc {
+	return func(pctx PreContext) HTTPResponse {
+		return Redirect(http.StatusPermanentRedirect, newuri)
+	}
+}

ginext/commonMiddlewares.go

@@ -0,0 +1,12 @@
+package ginext
+
+import (
+	"github.com/gin-gonic/gin"
+	"gogs.mikescher.com/BlackForestBytes/goext/dataext"
+)
+
+func BodyBuffer(g *gin.Context) {
+	if g.Request.Body != nil {
+		g.Request.Body = dataext.NewBufferedReadCloser(g.Request.Body)
+	}
+}

ginext/cors.go

@@ -0,0 +1,21 @@
+package ginext
+
+import (
+	"github.com/gin-gonic/gin"
+	"net/http"
+)
+
+func CorsMiddleware() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		c.Writer.Header().Set("Access-Control-Allow-Origin", "*")
+		c.Writer.Header().Set("Access-Control-Allow-Credentials", "true")
+		c.Writer.Header().Set("Access-Control-Allow-Headers", "Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, accept, origin, Cache-Control, X-Requested-With")
+		c.Writer.Header().Set("Access-Control-Allow-Methods", "OPTIONS, GET, POST, PUT, PATCH, DELETE, COUNT")
+
+		if c.Request.Method == "OPTIONS" {
+			c.AbortWithStatus(http.StatusOK)
+		} else {
+			c.Next()
+		}
+	}
+}

ginext/engine.go

@@ -0,0 +1,149 @@
+package ginext
+
+import (
+	"fmt"
+	"github.com/gin-gonic/gin"
+	"github.com/rs/zerolog/log"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"gogs.mikescher.com/BlackForestBytes/goext/mathext"
+	"net"
+	"net/http"
+	"strings"
+	"time"
+)
+
+type GinWrapper struct {
+	engine          *gin.Engine
+	SuppressGinLogs bool
+
+	allowCors      bool
+	ginDebug       bool
+	bufferBody     bool
+	requestTimeout time.Duration
+
+	routeSpecs []ginRouteSpec
+}
+
+type ginRouteSpec struct {
+	Method      string
+	URL         string
+	Middlewares []string
+	Handler     string
+}
+
+// NewEngine creates a new (wrapped) ginEngine
+// Parameters are:
+// - [allowCors]    Add cors handler to allow all CORS requests on the default http methods
+// - [ginDebug]     Set gin.debug to true (adds more logs)
+// - [bufferBody]   Buffers the input body stream, this way the ginext error handler can later include the whole request body
+// - [timeout]      The default handler timeout
+func NewEngine(allowCors bool, ginDebug bool, bufferBody bool, timeout time.Duration) *GinWrapper {
+	engine := gin.New()
+
+	wrapper := &GinWrapper{
+		engine:          engine,
+		SuppressGinLogs: false,
+		allowCors:       allowCors,
+		ginDebug:        ginDebug,
+		bufferBody:      bufferBody,
+		requestTimeout:  timeout,
+	}
+
+	engine.RedirectFixedPath = false
+	engine.RedirectTrailingSlash = false
+
+	if allowCors {
+		engine.Use(CorsMiddleware())
+	}
+
+	// do not debug-print routes
+	gin.DebugPrintRouteFunc = func(_, _, _ string, _ int) {}
+
+	if ginDebug {
+		gin.SetMode(gin.ReleaseMode)
+
+		ginlogger := gin.Logger()
+		engine.Use(func(context *gin.Context) {
+			if !wrapper.SuppressGinLogs {
+				ginlogger(context)
+			}
+		})
+	} else {
+		gin.SetMode(gin.DebugMode)
+	}
+
+	return wrapper
+}
+
+func (w *GinWrapper) ListenAndServeHTTP(addr string, postInit func(port string)) (chan error, *http.Server) {
+
+	w.DebugPrintRoutes()
+
+	httpserver := &http.Server{
+		Addr:    addr,
+		Handler: w.engine,
+	}
+
+	errChan := make(chan error)
+
+	go func() {
+
+		ln, err := net.Listen("tcp", httpserver.Addr)
+		if err != nil {
+			errChan <- err
+			return
+		}
+
+		_, port, err := net.SplitHostPort(ln.Addr().String())
+		if err != nil {
+			errChan <- err
+			return
+		}
+
+		log.Info().Str("address", httpserver.Addr).Msg("HTTP-Server started on http://localhost:" + port)
+
+		if postInit != nil {
+			postInit(port) // the net.Listener a few lines above is at this point actually already buffering requests
+		}
+
+		errChan <- httpserver.Serve(ln)
+	}()
+
+	return errChan, httpserver
+}
+
+func (w *GinWrapper) DebugPrintRoutes() {
+	if !w.ginDebug {
+		return
+	}
+
+	lines := make([][4]string, 0)
+
+	pad := [4]int{0, 0, 0, 0}
+
+	for _, spec := range w.routeSpecs {
+
+		line := [4]string{
+			spec.Method,
+			spec.URL,
+			strings.Join(spec.Middlewares, " -> "),
+			spec.Handler,
+		}
+
+		lines = append(lines, line)
+
+		pad[0] = mathext.Max(pad[0], len(line[0]))
+		pad[1] = mathext.Max(pad[1], len(line[1]))
+		pad[2] = mathext.Max(pad[2], len(line[2]))
+		pad[3] = mathext.Max(pad[3], len(line[3]))
+	}
+
+	for _, line := range lines {
+
+		fmt.Printf("Gin-Route: %s  %s  -->  %s  -->  %s\n",
+			langext.StrPadRight("["+line[0]+"]", " ", pad[0]+2),
+			langext.StrPadRight(line[1], " ", pad[1]),
+			langext.StrPadRight(line[2], " ", pad[2]),
+			langext.StrPadRight(line[3], " ", pad[3]))
+	}
+}

ginext/funcWrapper.go

@@ -0,0 +1,39 @@
+package ginext
+
+import (
+	"fmt"
+	"github.com/gin-gonic/gin"
+	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
+)
+
+type WHandlerFunc func(PreContext) HTTPResponse
+
+func Wrap(w *GinWrapper, fn WHandlerFunc) gin.HandlerFunc {
+
+	return func(g *gin.Context) {
+
+		reqctx := g.Request.Context()
+
+		wrap, stackTrace, panicObj := callPanicSafe(fn, PreContext{wrapper: w, ginCtx: g})
+		if panicObj != nil {
+
+			fmt.Printf("\n======== ======== STACKTRACE ======== ========\n%s\n======== ======== ======== ========\n\n", stackTrace)
+
+			err := exerr.
+				New(exerr.TypePanic, "Panic occured (in gin handler)").
+				Any("panicObj", panicObj).
+				Str("trace", stackTrace).
+				Build()
+
+			wrap = Error(err)
+		}
+
+		if g.Writer.Written() {
+			panic("Writing in WrapperFunc is not supported")
+		}
+
+		if reqctx.Err() == nil {
+			wrap.Write(g)
+		}
+	}
+}

ginext/preContext.go

@@ -0,0 +1,145 @@
+package ginext
+
+import (
+	"context"
+	"fmt"
+	"github.com/gin-gonic/gin"
+	"github.com/gin-gonic/gin/binding"
+	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"runtime/debug"
+	"time"
+)
+
+type PreContext struct {
+	ginCtx  *gin.Context
+	wrapper *GinWrapper
+	uri     any
+	query   any
+	body    any
+	form    any
+	header  any
+	timeout *time.Duration
+}
+
+func (pctx *PreContext) URI(uri any) *PreContext {
+	pctx.uri = uri
+	return pctx
+}
+
+func (pctx *PreContext) Query(query any) *PreContext {
+	pctx.query = query
+	return pctx
+}
+
+func (pctx *PreContext) Body(body any) *PreContext {
+	pctx.body = body
+	return pctx
+}
+
+func (pctx *PreContext) Form(form any) *PreContext {
+	pctx.form = form
+	return pctx
+}
+
+func (pctx *PreContext) Header(header any) *PreContext {
+	pctx.header = header
+	return pctx
+}
+
+func (pctx *PreContext) WithTimeout(to time.Duration) *PreContext {
+	pctx.timeout = &to
+	return pctx
+}
+
+func (pctx PreContext) Start() (*AppContext, *gin.Context, *HTTPResponse) {
+	if pctx.uri != nil {
+		if err := pctx.ginCtx.ShouldBindUri(pctx.uri); err != nil {
+			err = exerr.Wrap(err, "Failed to read uri").
+				WithType(exerr.TypeBindFailURI).
+				Str("struct_type", fmt.Sprintf("%T", pctx.uri)).
+				Build()
+			return nil, nil, langext.Ptr(Error(err))
+		}
+	}
+
+	if pctx.query != nil {
+		if err := pctx.ginCtx.ShouldBindQuery(pctx.query); err != nil {
+			err = exerr.Wrap(err, "Failed to read query").
+				WithType(exerr.TypeBindFailQuery).
+				Str("struct_type", fmt.Sprintf("%T", pctx.query)).
+				Build()
+			return nil, nil, langext.Ptr(Error(err))
+		}
+	}
+
+	if pctx.body != nil {
+		if pctx.ginCtx.ContentType() == "application/json" {
+			if err := pctx.ginCtx.ShouldBindJSON(pctx.body); err != nil {
+				err = exerr.Wrap(err, "Failed to read json-body").
+					WithType(exerr.TypeBindFailJSON).
+					Str("struct_type", fmt.Sprintf("%T", pctx.body)).
+					Build()
+				return nil, nil, langext.Ptr(Error(err))
+			}
+		} else {
+			err := exerr.New(exerr.TypeBindFailJSON, "missing JSON body").
+				Str("struct_type", fmt.Sprintf("%T", pctx.body)).
+				Build()
+			return nil, nil, langext.Ptr(Error(err))
+		}
+	}
+
+	if pctx.form != nil {
+		if pctx.ginCtx.ContentType() == "multipart/form-data" {
+			if err := pctx.ginCtx.ShouldBindWith(pctx.form, binding.Form); err != nil {
+				err = exerr.Wrap(err, "Failed to read multipart-form").
+					WithType(exerr.TypeBindFailFormData).
+					Str("struct_type", fmt.Sprintf("%T", pctx.form)).
+					Build()
+				return nil, nil, langext.Ptr(Error(err))
+			}
+		} else if pctx.ginCtx.ContentType() == "application/x-www-form-urlencoded" {
+			if err := pctx.ginCtx.ShouldBindWith(pctx.form, binding.Form); err != nil {
+				err = exerr.Wrap(err, "Failed to read urlencoded-form").
+					WithType(exerr.TypeBindFailFormData).
+					Str("struct_type", fmt.Sprintf("%T", pctx.form)).
+					Build()
+				return nil, nil, langext.Ptr(Error(err))
+			}
+		} else {
+			err := exerr.New(exerr.TypeBindFailFormData, "missing form body").
+				Str("struct_type", fmt.Sprintf("%T", pctx.form)).
+				Build()
+			return nil, nil, langext.Ptr(Error(err))
+		}
+	}
+
+	if pctx.header != nil {
+		if err := pctx.ginCtx.ShouldBindHeader(pctx.query); err != nil {
+			err = exerr.Wrap(err, "Failed to read header").
+				WithType(exerr.TypeBindFailHeader).
+				Str("struct_type", fmt.Sprintf("%T", pctx.query)).
+				Build()
+			return nil, nil, langext.Ptr(Error(err))
+		}
+	}
+
+	ictx, cancel := context.WithTimeout(context.Background(), langext.Coalesce(pctx.timeout, pctx.wrapper.requestTimeout))
+	actx := CreateAppContext(pctx.ginCtx, ictx, cancel)
+
+	return actx, pctx.ginCtx, nil
+}
+
+func callPanicSafe(fn WHandlerFunc, pctx PreContext) (res HTTPResponse, stackTrace string, panicObj any) {
+	defer func() {
+		if rec := recover(); rec != nil {
+			res = nil
+			stackTrace = string(debug.Stack())
+			panicObj = rec
+		}
+	}()
+
+	res = fn(pctx)
+	return res, "", nil
+}

ginext/response.go

@@ -0,0 +1,216 @@
+package ginext
+
+import (
+	"fmt"
+	"github.com/gin-gonic/gin"
+	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
+	json "gogs.mikescher.com/BlackForestBytes/goext/gojson"
+)
+
+type headerval struct {
+	Key string
+	Val string
+}
+
+type HTTPResponse interface {
+	Write(g *gin.Context)
+	WithHeader(k string, v string) HTTPResponse
+}
+
+type jsonHTTPResponse struct {
+	statusCode int
+	data       any
+	headers    []headerval
+}
+
+func (j jsonHTTPResponse) Write(g *gin.Context) {
+	for _, v := range j.headers {
+		g.Header(v.Key, v.Val)
+	}
+	g.Render(j.statusCode, json.GoJsonRender{Data: j.data, NilSafeSlices: true, NilSafeMaps: true})
+}
+
+func (j jsonHTTPResponse) WithHeader(k string, v string) HTTPResponse {
+	j.headers = append(j.headers, headerval{k, v})
+	return j
+}
+
+type emptyHTTPResponse struct {
+	statusCode int
+	headers    []headerval
+}
+
+func (j emptyHTTPResponse) Write(g *gin.Context) {
+	for _, v := range j.headers {
+		g.Header(v.Key, v.Val)
+	}
+	g.Status(j.statusCode)
+}
+
+func (j emptyHTTPResponse) WithHeader(k string, v string) HTTPResponse {
+	j.headers = append(j.headers, headerval{k, v})
+	return j
+}
+
+type textHTTPResponse struct {
+	statusCode int
+	data       string
+	headers    []headerval
+}
+
+func (j textHTTPResponse) Write(g *gin.Context) {
+	for _, v := range j.headers {
+		g.Header(v.Key, v.Val)
+	}
+	g.String(j.statusCode, "%s", j.data)
+}
+
+func (j textHTTPResponse) WithHeader(k string, v string) HTTPResponse {
+	j.headers = append(j.headers, headerval{k, v})
+	return j
+}
+
+type dataHTTPResponse struct {
+	statusCode  int
+	data        []byte
+	contentType string
+	headers     []headerval
+}
+
+func (j dataHTTPResponse) Write(g *gin.Context) {
+	for _, v := range j.headers {
+		g.Header(v.Key, v.Val)
+	}
+	g.Data(j.statusCode, j.contentType, j.data)
+}
+
+func (j dataHTTPResponse) WithHeader(k string, v string) HTTPResponse {
+	j.headers = append(j.headers, headerval{k, v})
+	return j
+}
+
+type fileHTTPResponse struct {
+	mimetype string
+	filepath string
+	filename *string
+	headers  []headerval
+}
+
+func (j fileHTTPResponse) Write(g *gin.Context) {
+	g.Header("Content-Type", j.mimetype) // if we don't set it here gin does weird file-sniffing later...
+	if j.filename != nil {
+		g.Header("Content-Disposition", fmt.Sprintf("attachment; filename=\"%s\"", *j.filename))
+
+	}
+	for _, v := range j.headers {
+		g.Header(v.Key, v.Val)
+	}
+	g.File(j.filepath)
+}
+
+func (j fileHTTPResponse) WithHeader(k string, v string) HTTPResponse {
+	j.headers = append(j.headers, headerval{k, v})
+	return j
+}
+
+type downloadDataHTTPResponse struct {
+	statusCode int
+	mimetype   string
+	data       []byte
+	filename   *string
+	headers    []headerval
+}
+
+func (j downloadDataHTTPResponse) Write(g *gin.Context) {
+	g.Header("Content-Type", j.mimetype) // if we don't set it here gin does weird file-sniffing later...
+	if j.filename != nil {
+		g.Header("Content-Disposition", fmt.Sprintf("attachment; filename=\"%s\"", *j.filename))
+
+	}
+	for _, v := range j.headers {
+		g.Header(v.Key, v.Val)
+	}
+	g.Data(j.statusCode, j.mimetype, j.data)
+}
+
+func (j downloadDataHTTPResponse) WithHeader(k string, v string) HTTPResponse {
+	j.headers = append(j.headers, headerval{k, v})
+	return j
+}
+
+type redirectHTTPResponse struct {
+	statusCode int
+	url        string
+	headers    []headerval
+}
+
+func (j redirectHTTPResponse) Write(g *gin.Context) {
+	g.Redirect(j.statusCode, j.url)
+}
+
+func (j redirectHTTPResponse) WithHeader(k string, v string) HTTPResponse {
+	j.headers = append(j.headers, headerval{k, v})
+	return j
+}
+
+type jsonAPIErrResponse struct {
+	err     *exerr.ExErr
+	headers []headerval
+}
+
+func (j jsonAPIErrResponse) Write(g *gin.Context) {
+	j.err.Output(g)
+}
+
+func (j jsonAPIErrResponse) WithHeader(k string, v string) HTTPResponse {
+	j.headers = append(j.headers, headerval{k, v})
+	return j
+}
+
+func Status(sc int) HTTPResponse {
+	return &emptyHTTPResponse{statusCode: sc}
+}
+
+func JSON(sc int, data any) HTTPResponse {
+	return &jsonHTTPResponse{statusCode: sc, data: data}
+}
+
+func Data(sc int, contentType string, data []byte) HTTPResponse {
+	return &dataHTTPResponse{statusCode: sc, contentType: contentType, data: data}
+}
+
+func Text(sc int, data string) HTTPResponse {
+	return &textHTTPResponse{statusCode: sc, data: data}
+}
+
+func File(mimetype string, filepath string) HTTPResponse {
+	return &fileHTTPResponse{mimetype: mimetype, filepath: filepath}
+}
+
+func Download(mimetype string, filepath string, filename string) HTTPResponse {
+	return &fileHTTPResponse{mimetype: mimetype, filepath: filepath, filename: &filename}
+}
+
+func DownloadData(status int, mimetype string, filename string, data []byte) HTTPResponse {
+	return &downloadDataHTTPResponse{statusCode: status, mimetype: mimetype, data: data, filename: &filename}
+}
+
+func Redirect(sc int, newURL string) HTTPResponse {
+	return &redirectHTTPResponse{statusCode: sc, url: newURL}
+}
+
+func Error(e error) HTTPResponse {
+	return &jsonAPIErrResponse{
+		err: exerr.FromError(e),
+	}
+}
+
+func ErrWrap(e error, errorType exerr.ErrorType, msg string) HTTPResponse {
+	return &jsonAPIErrResponse{
+		err: exerr.FromError(exerr.Wrap(e, msg).WithType(errorType).Build()),
+	}
+}
+
+func NotImplemented() HTTPResponse {
+	return Error(exerr.New(exerr.TypeNotImplemented, "").Build())
+}

ginext/routes.go

@@ -0,0 +1,211 @@
+package ginext
+
+import (
+	"github.com/gin-gonic/gin"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"gogs.mikescher.com/BlackForestBytes/goext/rext"
+	"net/http"
+	"path"
+	"reflect"
+	"regexp"
+	"runtime"
+	"strings"
+)
+
+var anyMethods = []string{
+	http.MethodGet, http.MethodPost, http.MethodPut, http.MethodPatch,
+	http.MethodHead, http.MethodOptions, http.MethodDelete, http.MethodConnect,
+	http.MethodTrace,
+}
+
+type GinRoutesWrapper struct {
+	wrapper        *GinWrapper
+	routes         gin.IRouter
+	absPath        string
+	defaultHandler []gin.HandlerFunc
+}
+
+type GinRouteBuilder struct {
+	routes *GinRoutesWrapper
+
+	method   string
+	relPath  string
+	absPath  string
+	handlers []gin.HandlerFunc
+}
+
+func (w *GinWrapper) Routes() *GinRoutesWrapper {
+	return &GinRoutesWrapper{
+		wrapper:        w,
+		routes:         w.engine,
+		absPath:        "",
+		defaultHandler: make([]gin.HandlerFunc, 0),
+	}
+}
+
+func (w *GinRoutesWrapper) Group(relativePath string) *GinRoutesWrapper {
+	return &GinRoutesWrapper{
+		wrapper:        w.wrapper,
+		routes:         w.routes.Group(relativePath),
+		defaultHandler: langext.ArrCopy(w.defaultHandler),
+		absPath:        joinPaths(w.absPath, relativePath),
+	}
+}
+
+func (w *GinRoutesWrapper) Use(middleware ...gin.HandlerFunc) *GinRoutesWrapper {
+	defHandler := langext.ArrCopy(w.defaultHandler)
+	defHandler = append(defHandler, middleware...)
+	return &GinRoutesWrapper{wrapper: w.wrapper, routes: w.routes, defaultHandler: defHandler}
+}
+
+func (w *GinRoutesWrapper) GET(relativePath string) *GinRouteBuilder {
+	return w._route(http.MethodGet, relativePath)
+}
+
+func (w *GinRoutesWrapper) POST(relativePath string) *GinRouteBuilder {
+	return w._route(http.MethodPost, relativePath)
+}
+
+func (w *GinRoutesWrapper) DELETE(relativePath string) *GinRouteBuilder {
+	return w._route(http.MethodDelete, relativePath)
+}
+
+func (w *GinRoutesWrapper) PATCH(relativePath string) *GinRouteBuilder {
+	return w._route(http.MethodPatch, relativePath)
+}
+
+func (w *GinRoutesWrapper) PUT(relativePath string) *GinRouteBuilder {
+	return w._route(http.MethodPut, relativePath)
+}
+
+func (w *GinRoutesWrapper) OPTIONS(relativePath string) *GinRouteBuilder {
+	return w._route(http.MethodOptions, relativePath)
+}
+
+func (w *GinRoutesWrapper) HEAD(relativePath string) *GinRouteBuilder {
+	return w._route(http.MethodHead, relativePath)
+}
+
+func (w *GinRoutesWrapper) COUNT(relativePath string) *GinRouteBuilder {
+	return w._route("COUNT", relativePath)
+}
+
+func (w *GinRoutesWrapper) Any(relativePath string) *GinRouteBuilder {
+	return w._route("*", relativePath)
+}
+
+func (w *GinRoutesWrapper) _route(method string, relativePath string) *GinRouteBuilder {
+	return &GinRouteBuilder{
+		routes:   w,
+		method:   method,
+		relPath:  relativePath,
+		absPath:  joinPaths(w.absPath, relativePath),
+		handlers: langext.ArrCopy(w.defaultHandler),
+	}
+}
+
+func (w *GinRouteBuilder) Use(middleware ...gin.HandlerFunc) *GinRouteBuilder {
+	w.handlers = append(w.handlers, middleware...)
+	return w
+}
+
+func (w *GinRouteBuilder) Handle(handler WHandlerFunc) {
+
+	if w.routes.wrapper.bufferBody {
+		arr := make([]gin.HandlerFunc, 0, len(w.handlers)+1)
+		arr = append(arr, BodyBuffer)
+		arr = append(arr, w.handlers...)
+		w.handlers = arr
+	}
+
+	middlewareNames := langext.ArrMap(w.handlers, func(v gin.HandlerFunc) string { return nameOfFunction(v) })
+	handlerName := nameOfFunction(handler)
+
+	w.handlers = append(w.handlers, Wrap(w.routes.wrapper, handler))
+
+	methodName := w.method
+
+	if w.method == "*" {
+		methodName = "ANY"
+		for _, method := range anyMethods {
+			w.routes.routes.Handle(method, w.relPath, w.handlers...)
+		}
+	} else {
+		w.routes.routes.Handle(w.method, w.relPath, w.handlers...)
+	}
+
+	w.routes.wrapper.routeSpecs = append(w.routes.wrapper.routeSpecs, ginRouteSpec{
+		Method:      methodName,
+		URL:         w.absPath,
+		Middlewares: middlewareNames,
+		Handler:     handlerName,
+	})
+}
+
+func (w *GinWrapper) NoRoute(handler WHandlerFunc) {
+
+	handlers := make([]gin.HandlerFunc, 0)
+
+	if w.bufferBody {
+		handlers = append(handlers, BodyBuffer)
+	}
+
+	middlewareNames := langext.ArrMap(handlers, func(v gin.HandlerFunc) string { return nameOfFunction(v) })
+	handlerName := nameOfFunction(handler)
+
+	handlers = append(handlers, Wrap(w, handler))
+
+	w.engine.NoRoute(handlers...)
+
+	w.routeSpecs = append(w.routeSpecs, ginRouteSpec{
+		Method:      "ANY",
+		URL:         "[NO_ROUTE]",
+		Middlewares: middlewareNames,
+		Handler:     handlerName,
+	})
+}
+
+func nameOfFunction(f any) string {
+
+	fname := runtime.FuncForPC(reflect.ValueOf(f).Pointer()).Name()
+
+	split := strings.Split(fname, "/")
+	if len(split) == 0 {
+		return ""
+	}
+
+	fname = split[len(split)-1]
+
+	// https://stackoverflow.com/a/32925345/1761622
+	if strings.HasSuffix(fname, "-fm") {
+		fname = fname[:len(fname)-len("-fm")]
+	}
+
+	suffix := rext.W(regexp.MustCompile(`\.func[0-9]+(?:\.[0-9]+)*$`))
+
+	if match, ok := suffix.MatchFirst(fname); ok {
+		fname = fname[:len(fname)-match.FullMatch().Length()]
+	}
+
+	return fname
+}
+
+// joinPaths is copied verbatim from gin@v1.9.1/gin.go
+func joinPaths(absolutePath, relativePath string) string {
+	if relativePath == "" {
+		return absolutePath
+	}
+
+	finalPath := path.Join(absolutePath, relativePath)
+	if lastChar(relativePath) == '/' && lastChar(finalPath) != '/' {
+		return finalPath + "/"
+	}
+	return finalPath
+}
+
+func lastChar(str string) uint8 {
+	if str == "" {
+		panic("The length of the string can't be 0")
+	}
+	return str[len(str)-1]
+}

go.mod

@@ -3,22 +3,48 @@ module gogs.mikescher.com/BlackForestBytes/goext
 go 1.19
 
 require (
+	github.com/gin-gonic/gin v1.9.1
 	github.com/jmoiron/sqlx v1.3.5
-	go.mongodb.org/mongo-driver v1.12.0
+	github.com/rs/xid v1.5.0
-	golang.org/x/crypto v0.11.0
+	github.com/rs/zerolog v1.30.0
-	golang.org/x/sys v0.10.0
+	go.mongodb.org/mongo-driver v1.12.1
-	golang.org/x/term v0.10.0
+	golang.org/x/crypto v0.12.0
+	golang.org/x/sys v0.11.0
+	golang.org/x/term v0.11.0
 )
 
 require (
+	github.com/bytedance/sonic v1.10.0 // indirect
+	github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d // indirect
+	github.com/chenzhuoyu/iasm v0.9.0 // indirect
+	github.com/gabriel-vasile/mimetype v1.4.2 // indirect
+	github.com/gin-contrib/sse v0.1.0 // indirect
+	github.com/go-playground/locales v0.14.1 // indirect
+	github.com/go-playground/universal-translator v0.18.1 // indirect
+	github.com/go-playground/validator/v10 v10.15.0 // indirect
+	github.com/goccy/go-json v0.10.2 // indirect
 	github.com/golang/snappy v0.0.4 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/klauspost/compress v1.16.7 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.5 // indirect
+	github.com/leodido/go-urn v1.2.4 // indirect
+	github.com/mattn/go-colorable v0.1.13 // indirect
+	github.com/mattn/go-isatty v0.0.19 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/montanaflynn/stats v0.7.1 // indirect
+	github.com/pelletier/go-toml/v2 v2.0.9 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
+	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
+	github.com/ugorji/go/codec v1.2.11 // indirect
 	github.com/xdg-go/pbkdf2 v1.0.0 // indirect
 	github.com/xdg-go/scram v1.1.2 // indirect
 	github.com/xdg-go/stringprep v1.0.4 // indirect
 	github.com/youmark/pkcs8 v0.0.0-20201027041543-1326539a0a0a // indirect
+	golang.org/x/arch v0.4.0 // indirect
+	golang.org/x/net v0.14.0 // indirect
 	golang.org/x/sync v0.3.0 // indirect
-	golang.org/x/text v0.11.0 // indirect
+	golang.org/x/text v0.12.0 // indirect
+	google.golang.org/protobuf v1.31.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,46 +1,114 @@
+github.com/bytedance/sonic v1.5.0/go.mod h1:ED5hyg4y6t3/9Ku1R6dU/4KyJ48DZ4jPhfY1O2AihPM=
+github.com/bytedance/sonic v1.10.0-rc/go.mod h1:ElCzW+ufi8qKqNW0FY314xriJhyJhuoJ3gFZdAHF7NM=
+github.com/bytedance/sonic v1.10.0-rc2 h1:oDfRZ+4m6AYCOC0GFeOCeYqvBmucy1isvouS2K0cPzo=
+github.com/bytedance/sonic v1.10.0-rc2/go.mod h1:iZcSUejdk5aukTND/Eu/ivjQuEL0Cu9/rf50Hi0u/g4=
+github.com/bytedance/sonic v1.10.0-rc3 h1:uNSnscRapXTwUgTyOF0GVljYD08p9X/Lbr9MweSV3V0=
+github.com/bytedance/sonic v1.10.0-rc3/go.mod h1:iZcSUejdk5aukTND/Eu/ivjQuEL0Cu9/rf50Hi0u/g4=
+github.com/bytedance/sonic v1.10.0 h1:qtNZduETEIWJVIyDl01BeNxur2rW9OwTQ/yBqFRkKEk=
+github.com/bytedance/sonic v1.10.0/go.mod h1:iZcSUejdk5aukTND/Eu/ivjQuEL0Cu9/rf50Hi0u/g4=
+github.com/chenzhuoyu/base64x v0.0.0-20211019084208-fb5309c8db06/go.mod h1:DH46F32mSOjUmXrMHnKwZdA8wcEefY7UVqBKYGjpdQY=
+github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311/go.mod h1:b583jCggY9gE99b6G5LEC39OIiVsWj+R97kbl5odCEk=
+github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d h1:77cEq6EriyTZ0g/qfRdp61a3Uu/AWrgIq2s0ClJV1g0=
+github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d/go.mod h1:8EPpVsBuRksnlj1mLy4AWzRNQYxauNi62uWcE3to6eA=
+github.com/chenzhuoyu/iasm v0.9.0 h1:9fhXjVzq5hUy2gkhhgHl95zG2cEAhw9OSGs8toWWAwo=
+github.com/chenzhuoyu/iasm v0.9.0/go.mod h1:Xjy2NpN3h7aUqeqM+woSuuvxmIe6+DDsiNLIrkAmYog=
+github.com/coreos/go-systemd/v22 v22.3.3-0.20220203105225-a9a7ef127534/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
+github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/go-sql-driver/mysql v1.6.0 h1:BCTh4TKNUYmOmMUcQ3IipzF5prigylS7XXjEkfCHuOE=
+github.com/gabriel-vasile/mimetype v1.4.2 h1:w5qFW6JKBz9Y393Y4q372O9A7cUSequkh1Q7OhCmWKU=
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 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/net v0.12.0 h1:cfawfvKITfUsFCeJIHJrbSxpeu/E81khclypR0GVT50=
+golang.org/x/net v0.12.0/go.mod h1:zEVYFnQC7m/vmpQFELhcD1EWkZlX69l4oqgmer6hfKA=
+golang.org/x/net v0.13.0 h1:Nvo8UFsZ8X3BhAC9699Z1j7XQ3rsZnUUm7jfBEk1ueY=
+golang.org/x/net v0.13.0/go.mod h1:zEVYFnQC7m/vmpQFELhcD1EWkZlX69l4oqgmer6hfKA=
+golang.org/x/net v0.14.0 h1:BONx9s002vGdD9umnlX1Po8vOZmrgH34qlHcD1MfK14=
+golang.org/x/net v0.14.0/go.mod h1:PpSgVXXLK0OxS0F31C1/tv6XNguvCrnXIDrFMspZIUI=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c h1:5KslGYwFpkhGh+Q16bwMP3cOontH8FOep7tGV86Y7SQ=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.2.0 h1:PUR+T4wwASmuSTYdKjYHI5TD22Wy5ogLU5qZCOLxBrI=
-golang.org/x/sync v0.2.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.3.0 h1:ftCYgMx6zT/asHUrPw8BLLscYtGznsLAnjq5RH9P66E=
 golang.org/x/sync v0.3.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -93,26 +166,32 @@ golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20210927094055-39ccf1dd6fa6/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.1.0 h1:kunALQeHf1/185U1i0GOB/fy1IPRDDpuoOOqRReG57U=
+golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.3.0 h1:w8ZOecv6NaNa/zC8944JTU3vz4u6Lagfk4RPQxv92NQ=
 golang.org/x/sys v0.3.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.8.0 h1:EBmGv8NaZBZTWvrbjNoL6HVt+IVy3QDQpJs7VRIw3tU=
+golang.org/x/sys v0.5.0 h1:MUK/U/4lj1t1oPg0HfuXDN/Z1wv31ZJ/YcPiGccS4DU=
-golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.9.0 h1:KS/R3tvhPqvJvwcKfnBHJwwthS11LRhmM5D59eEXa0s=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.9.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.10.0 h1:SqMFp9UcQJZa+pmYuAKjd9xq1f0j5rLcDIk0mj4qAsA=
 golang.org/x/sys v0.10.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.11.0 h1:eG7RXZHdqOJ1i+0lgLgCpSXAp6M3LYlAo6osgSi0xOM=
+golang.org/x/sys v0.11.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/term v0.1.0 h1:g6Z6vPFA9dYBAF7DWcH6sCcOntplXsDKcliusYijMlw=
+golang.org/x/term v0.1.0/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/term v0.3.0 h1:qoo4akIqOcDME5bhc/NgxUdovd6BSS2uMsVjB56q1xI=
 golang.org/x/term v0.3.0/go.mod h1:q750SLmJuPmVoN1blW3UFBPREJfb1KmY3vwxfr+nFDA=
-golang.org/x/term v0.8.0 h1:n5xxQn2i3PC0yLAbjTpNT85q/Kgzcr2gIoX9OrJUols=
-golang.org/x/term v0.8.0/go.mod h1:xPskH00ivmX89bAKVGSKKtLOWNx2+17Eiy94tnKShWo=
-golang.org/x/term v0.9.0 h1:GRRCnKYhdQrD8kfRAdQ6Zcw1P0OcELxGLKJvtjVMZ28=
-golang.org/x/term v0.9.0/go.mod h1:M6DEAAIenWoTxdKrOltXcmDY3rSplQUkrvaDU5FcQyo=
 golang.org/x/term v0.10.0 h1:3R7pNqamzBraeqj/Tj8qt1aQ2HpmlC+Cx/qL/7hn4/c=
 golang.org/x/term v0.10.0/go.mod h1:lpqdcUyK/oCiQxvxVrppt5ggO2KCZ5QblwqPnfZ6d5o=
+golang.org/x/term v0.11.0 h1:F9tnn/DA/Im8nCwm+fX+1/eBwi4qFjRT++MhtVC4ZX0=
+golang.org/x/term v0.11.0/go.mod h1:zC9APTIj3jG3FdV/Ons+XE1riIZXG4aZ4GTHiPZJPIU=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
@@ -121,20 +200,22 @@ golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ=
 golang.org/x/text v0.5.0 h1:OLmvp0KP+FVG99Ct/qFiL/Fhk4zp4QQnZ7b2U+5piUM=
 golang.org/x/text v0.5.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
 golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
-golang.org/x/text v0.9.0 h1:2sjJmO8cDvYveuX97RDLsxlyUxLl+GHoLxBiRdHllBE=
-golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
-golang.org/x/text v0.10.0 h1:UpjohKhiEgNc0CSauXmwYftY1+LlaC75SJwh0SgCX58=
-golang.org/x/text v0.10.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
 golang.org/x/text v0.11.0 h1:LAntKIrcmeSKERyiOh0XMV39LXS8IE9UL2yP7+f5ij4=
 golang.org/x/text v0.11.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
+golang.org/x/text v0.12.0 h1:k+n5B8goJNdU7hSvEtMUz3d1Q6D/XW4COJSJR6fN0mc=
+golang.org/x/text v0.12.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
+google.golang.org/protobuf v1.31.0 h1:g0LDEJHgrBl9N9r17Ru3sqWhkIx2NB67okBHPwC7hs8=
+google.golang.org/protobuf v1.31.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+nullprogram.com/x/optparse v1.0.0/go.mod h1:KdyPE+Igbe0jQUrVfMqDMeJQIJZEuyV7pjYmp6pbG50=
+rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=

goextVersion.go

@@ -1,5 +1,5 @@
 package goext
 
-const GoextVersion = "0.0.168"
+const GoextVersion = "0.0.240"
 
-const GoextVersionTimestamp = "2023-07-05T19:27:15+0200"
+const GoextVersionTimestamp = "2023-08-14T15:36:12+0200"

langext/array.go

@@ -440,3 +440,30 @@ func ArrCopy[T any](in []T) []T {
 	copy(out, in)
 	return out
 }
+
+func ArrRemove[T comparable](arr []T, needle T) []T {
+	idx := ArrFirstIndex(arr, needle)
+	if idx >= 0 {
+		return append(arr[:idx], arr[idx+1:]...)
+	}
+	return arr
+}
+
+func ArrExcept[T comparable](arr []T, needles ...T) []T {
+	r := make([]T, 0, len(arr))
+	rmlist := ArrToSet(needles)
+	for _, v := range arr {
+		if _, ok := rmlist[v]; !ok {
+			r = append(r, v)
+		}
+	}
+	return r
+}
+
+func ArrayToInterface[T any](t []T) []interface{} {
+	res := make([]interface{}, 0, len(t))
+	for i, _ := range t {
+		res = append(res, t[i])
+	}
+	return res
+}

langext/equals.go

@@ -1,13 +0,0 @@
-package langext
-
-func EqualsPointerVal[T comparable](v1 *T, v2 *T) bool {
-	if v1 == nil && v2 == nil {
-		return true
-	}
-
-	if v1 == nil || v2 == nil {
-		return false
-	}
-
-	return *v1 == *v2
-}

langext/maps.go

@@ -29,6 +29,14 @@ func ArrToMap[T comparable, V any](a []V, keyfunc func(V) T) map[T]V {
 	return result
 }
 
+func ArrToSet[T comparable](a []T) map[T]bool {
+	result := make(map[T]bool, len(a))
+	for _, v := range a {
+		result[v] = true
+	}
+	return result
+}
+
 func MapToArr[T comparable, V any](v map[T]V) []MapEntry[T, V] {
 	result := make([]MapEntry[T, V], 0, len(v))
 	for mk, mv := range v {

rext/wrapper_test.go

@@ -8,7 +8,7 @@ import (
 
 func TestGroupByNameOrEmpty1(t *testing.T) {
 
-	regex1 := W(regexp.MustCompile("0(?P<group1>A+)B(?P<group2>C+)0"))
+	regex1 := W(regexp.MustCompile(`0(?P<group1>A+)B(?P<group2>C+)0`))
 
 	match1, ok1 := regex1.MatchFirst("Hello 0AAAABCCC0 Bye.")
 
@@ -26,7 +26,7 @@ func TestGroupByNameOrEmpty1(t *testing.T) {
 
 func TestGroupByNameOrEmpty2(t *testing.T) {
 
-	regex1 := W(regexp.MustCompile("0(?P<group1>A+)B(?P<group2>C+)(?P<group3>C+)?0"))
+	regex1 := W(regexp.MustCompile(`0(?P<group1>A+)B(?P<group2>C+)(?P<group3>C+)?0`))
 
 	match1, ok1 := regex1.MatchFirst("Hello 0AAAABCCC0 Bye.")
 

sq/hasher.go

@@ -39,7 +39,7 @@ func HashSqliteSchema(ctx context.Context, schemaStr string) (string, error) {
 	return HashSqliteDatabase(ctx, db)
 }
 
-func HashSqliteDatabase(ctx context.Context, db DB) (string, error) {
+func HashSqliteDatabase(ctx context.Context, db Queryable) (string, error) {
 	ss, err := CreateSqliteDatabaseSchemaString(ctx, db)
 	if err != nil {
 		return "", err
@@ -50,7 +50,7 @@ func HashSqliteDatabase(ctx context.Context, db DB) (string, error) {
 	return hex.EncodeToString(cs[:]), nil
 }
 
-func CreateSqliteDatabaseSchemaString(ctx context.Context, db DB) (string, error) {
+func CreateSqliteDatabaseSchemaString(ctx context.Context, db Queryable) (string, error) {
 
 	type colInfo struct {
 		Name       string  `db:"name"`

sq/transaction.go

@@ -7,24 +7,40 @@ import (
 	"gogs.mikescher.com/BlackForestBytes/goext/langext"
 )
 
+type TxStatus string
+
+const (
+	TxStatusInitial  TxStatus = "INITIAL"
+	TxStatusActive   TxStatus = "ACTIVE"
+	TxStatusComitted TxStatus = "COMMITTED"
+	TxStatusRollback TxStatus = "ROLLBACK"
+)
+
 type Tx interface {
 	Rollback() error
 	Commit() error
+	Status() TxStatus
 	Exec(ctx context.Context, sql string, prep PP) (sql.Result, error)
 	Query(ctx context.Context, sql string, prep PP) (*sqlx.Rows, error)
 }
 
 type transaction struct {
-	tx   *sqlx.Tx
+	tx       *sqlx.Tx
-	id   uint16
+	id       uint16
-	lstr []Listener
+	lstr     []Listener
+	status   TxStatus
+	execCtr  int
+	queryCtr int
 }
 
 func NewTransaction(xtx *sqlx.Tx, txid uint16, lstr []Listener) Tx {
 	return &transaction{
-		tx:   xtx,
+		tx:       xtx,
-		id:   txid,
+		id:       txid,
-		lstr: lstr,
+		lstr:     lstr,
+		status:   TxStatusInitial,
+		execCtr:  0,
+		queryCtr: 0,
 	}
 }
 
@@ -38,6 +54,10 @@ func (tx *transaction) Rollback() error {
 
 	result := tx.tx.Rollback()
 
+	if result == nil {
+		tx.status = TxStatusRollback
+	}
+
 	for _, v := range tx.lstr {
 		v.PostTxRollback(tx.id, result)
 	}
@@ -55,6 +75,10 @@ func (tx *transaction) Commit() error {
 
 	result := tx.tx.Commit()
 
+	if result == nil {
+		tx.status = TxStatusComitted
+	}
+
 	for _, v := range tx.lstr {
 		v.PostTxRollback(tx.id, result)
 	}
@@ -73,6 +97,10 @@ func (tx *transaction) Exec(ctx context.Context, sqlstr string, prep PP) (sql.Re
 
 	res, err := tx.tx.NamedExecContext(ctx, sqlstr, prep)
 
+	if tx.status == TxStatusInitial && err == nil {
+		tx.status = TxStatusActive
+	}
+
 	for _, v := range tx.lstr {
 		v.PostExec(langext.Ptr(tx.id), origsql, sqlstr, prep)
 	}
@@ -94,6 +122,10 @@ func (tx *transaction) Query(ctx context.Context, sqlstr string, prep PP) (*sqlx
 
 	rows, err := sqlx.NamedQueryContext(ctx, tx.tx, sqlstr, prep)
 
+	if tx.status == TxStatusInitial && err == nil {
+		tx.status = TxStatusActive
+	}
+
 	for _, v := range tx.lstr {
 		v.PostQuery(langext.Ptr(tx.id), origsql, sqlstr, prep)
 	}
@@ -103,3 +135,11 @@ func (tx *transaction) Query(ctx context.Context, sqlstr string, prep PP) (*sqlx
 	}
 	return rows, nil
 }
+
+func (tx *transaction) Status() TxStatus {
+	return tx.status
+}
+
+func (tx *transaction) Traffic() (int, int) {
+	return tx.execCtr, tx.queryCtr
+}

termext/termcolor.go

@@ -71,12 +71,12 @@ func SupportsColors() bool {
 		}
 	}
 
-	var term256Regex = regexp.MustCompile("(?i)-256(color)?$")
+	var term256Regex = regexp.MustCompile(`(?i)-256(color)?$`)
 	if term256Regex.MatchString(termenv) {
 		return true
 	}
 
-	var termBasicRegex = regexp.MustCompile("(?i)^screen|^xterm|^vt100|^vt220|^rxvt|color|ansi|cygwin|linux")
+	var termBasicRegex = regexp.MustCompile(`(?i)^screen|^xterm|^vt100|^vt220|^rxvt|color|ansi|cygwin|linux`)
 
 	if termBasicRegex.MatchString(termenv) {
 		return true

tst/assertions.go

@@ -2,6 +2,7 @@ package tst
 
 import (
 	"encoding/hex"
+	"runtime/debug"
 	"testing"
 )
 
@@ -54,12 +55,18 @@ func AssertHexEqual(t *testing.T, expected string, actual []byte) {
 
 func AssertTrue(t *testing.T, value bool) {
 	if !value {
-		t.Error("value should be true")
+		t.Error("value should be true\n" + string(debug.Stack()))
 	}
 }
 
 func AssertFalse(t *testing.T, value bool) {
 	if value {
-		t.Error("value should be false")
+		t.Error("value should be false\n" + string(debug.Stack()))
+	}
+}
+
+func AssertNoErr(t *testing.T, anerr error) {
+	if anerr != nil {
+		t.Error("Function returned an error: " + anerr.Error() + "\n" + string(debug.Stack()))
 	}
 }

wmo/queryAggregate.go

@@ -2,6 +2,7 @@ package wmo
 
 import (
 	"context"
+	"errors"
 	"go.mongodb.org/mongo-driver/mongo"
 	"go.mongodb.org/mongo-driver/mongo/options"
 )
@@ -36,3 +37,20 @@ func (c *Coll[TData]) AggregateOneOpt(ctx context.Context, pipeline mongo.Pipeli
 
 	return nil, nil
 }
+
+func (c *Coll[TData]) AggregateOne(ctx context.Context, pipeline mongo.Pipeline, opts ...*options.AggregateOptions) (TData, error) {
+	cursor, err := c.coll.Aggregate(ctx, pipeline, opts...)
+	if err != nil {
+		return *new(TData), err
+	}
+
+	if cursor.Next(ctx) {
+		v, err := c.decodeSingle(ctx, cursor)
+		if err != nil {
+			return *new(TData), err
+		}
+		return v, nil
+	}
+
+	return *new(TData), errors.New("no document in result")
+}

wmo/queryInsert.go

@@ -3,6 +3,8 @@ package wmo
 import (
 	"context"
 	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/mongo"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
 )
 
 func (c *Coll[TData]) InsertOne(ctx context.Context, valueIn TData) (TData, error) {
@@ -15,3 +17,7 @@ func (c *Coll[TData]) InsertOne(ctx context.Context, valueIn TData) (TData, erro
 
 	return c.decodeSingle(ctx, mongoRes)
 }
+
+func (c *Coll[TData]) InsertMany(ctx context.Context, valueIn []TData) (*mongo.InsertManyResult, error) {
+	return c.coll.InsertMany(ctx, langext.ArrayToInterface(valueIn))
+}