Add support for pre-commit-commands

Signed-off-by: Knut Ahlers <knut@ahlers.me>

assets/git_changerelease.yaml

@@ -23,4 +23,16 @@ match_major:
 # which will be used to add the tag to.
 release_commit_message: "prepare release {{.Version}}"
 
+# Commands to run before committing the changelog and adding the tag.
+# Therefore these can add content to be included into the release-
+# commit. These commands have access to the `TAG_VERSION` variable
+# which contains the tag to be applied after the commit. If the
+# command specified here is prefixed with a `-` sign, the exit status
+# will not fail the release process. If it is not prefixed with a `-`
+# a non-zero exit status will terminate the release process. The
+# commands will be run from the repostory root, so sub-dirs MUST be
+# specified. All commands are run as `bash -ec "..."` so you can use
+# bash inside the commands.
+pre_commit_commands: []
+
 ...

config.go

@@ -19,6 +19,8 @@ type configFile struct {
 	ReleaseCommitMessage string `yaml:"release_commit_message"`
 
 	IgnoreMessages []string `yaml:"ignore_messages"`
+
+	PreCommitCommands []string `yaml:"pre_commit_commands"`
 }
 
 func loadConfig(configFiles ...string) (*configFile, error) {

go.mod

@@ -3,6 +3,7 @@ module github.com/Luzifer/git-changerelease
 go 1.21
 
 require (
+	github.com/Luzifer/go_helpers/v2 v2.21.0
 	github.com/Luzifer/rconfig/v2 v2.4.0
 	github.com/Masterminds/semver/v3 v3.2.1
 	github.com/mitchellh/go-homedir v1.1.0

go.sum

@@ -1,3 +1,5 @@
+github.com/Luzifer/go_helpers/v2 v2.21.0 h1:kR0kdpTkYpkou3qOr2E+sXh0FxG85Mof4BlRhfSB790=
+github.com/Luzifer/go_helpers/v2 v2.21.0/go.mod h1:cIIqMPu3NT8/6kHke+03hVznNDLLKVGA74Lz47CWJyA=
 github.com/Luzifer/rconfig/v2 v2.4.0 h1:MAdymTlExAZ8mx5VG8xOFAtFQSpWBipKYQHPOmYTn9o=
 github.com/Luzifer/rconfig/v2 v2.4.0/go.mod h1:hWF3ZVSusbYlg5bEvCwalEyUSY+0JPJWUiIu7rBmav8=
 github.com/Masterminds/semver/v3 v3.2.1 h1:RN9w6+7QoMeJVGyfmbcgs28Br8cvmnucEXnY0rYXWg0=
@@ -7,8 +9,8 @@ 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/kr/pretty v0.2.1 h1:Fmg33tUaq4/8ym9TJN1x7sLJnHVwhP33CNkpYV/7rwI=
 github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
-github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
+github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
-github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y=
 github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
@@ -18,8 +20,9 @@ github.com/sirupsen/logrus v1.9.3/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVs
 github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
 github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.14.0 h1:Vz7Qs629MkJkGyHxUlRHizWJRG2j8fbQKjELVSNhy7Q=
 golang.org/x/sys v0.14.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
@@ -30,5 +33,6 @@ gopkg.in/validator.v2 v2.0.1 h1:xF0KWyGWXm/LM2G1TrEjqOu4pa6coO9AlWSf3msVfDY=
 gopkg.in/validator.v2 v2.0.1/go.mod h1:lIUZBlB3Im4s/eYp39Ry/wkR02yOPhZ9IwIRBjuPuG8=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
 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=

main.go

@@ -15,6 +15,7 @@ import (
 	"github.com/mitchellh/go-homedir"
 	"github.com/sirupsen/logrus"
 
+	"github.com/Luzifer/go_helpers/v2/env"
 	"github.com/Luzifer/rconfig/v2"
 )
 
@@ -152,6 +153,12 @@ func main() {
 		logrus.WithError(err).Fatal("writing changelog")
 	}
 
+	for _, pc := range config.PreCommitCommands {
+		if err = runUserCommand(pc, map[string]string{"TAG_VERSION": newVersion.String()}); err != nil {
+			logrus.WithError(err).WithField("cmd", pc).Fatal("executing pre-commit-commands")
+		}
+	}
+
 	// Write the tag
 	if err = applyTag("v" + newVersion.String()); err != nil {
 		logrus.WithError(err).Fatal("applying tag")
@@ -260,3 +267,43 @@ func renderTemplate(name string, tplSrc []byte, values any) ([]byte, error) {
 
 	return buf.Bytes(), nil
 }
+
+func runUserCommand(command string, extraEnv map[string]string) error {
+	if len(command) == 0 {
+		return errors.New("empty command specified")
+	}
+
+	// Check whether command is prefixed with a minus: If so the error
+	// will only be logged and is not fatal to the changerelease run
+	fatal := command[0] != '-'
+	if !fatal {
+		command = command[1:]
+	}
+
+	logrus.WithField("fatal", fatal).WithField("command", command).Trace("running pre_commit_commands")
+
+	envVars := env.ListToMap(os.Environ())
+	for k, v := range extraEnv {
+		envVars[k] = v
+	}
+
+	wd, err := filenameInGitRoot(".")
+	if err != nil {
+		return fmt.Errorf("determining workdir for commands: %w", err)
+	}
+
+	cmd := exec.Command("/usr/bin/env", "bash", "-ec", command)
+	cmd.Stderr = os.Stderr
+	cmd.Stdout = os.Stdout
+	cmd.Env = env.MapToList(envVars)
+	cmd.Dir = wd
+
+	if err = cmd.Run(); err != nil {
+		if fatal {
+			return fmt.Errorf("command had error: %w", err)
+		}
+		logrus.WithError(err).WithField("cmd", command).Warn("command had error, marked as non-fatal")
+	}
+
+	return nil
+}