feat(hooks): add pre and post release hooks

internal/hooks/hooks.go

@@ -0,0 +1,71 @@
+package hooks
+
+import (
+	"bufio"
+	"os/exec"
+	"strings"
+
+	"github.com/Nightapes/go-semantic-release/internal/shared"
+	"github.com/Nightapes/go-semantic-release/pkg/config"
+	log "github.com/sirupsen/logrus"
+)
+
+//Hooks struct
+type Hooks struct {
+	version *shared.ReleaseVersion
+	config  *config.ReleaseConfig
+}
+
+// New hooks struct
+func New(config *config.ReleaseConfig, version *shared.ReleaseVersion) *Hooks {
+	return &Hooks{
+		config:  config,
+		version: version,
+	}
+}
+
+// PreRelease runs before creating release
+func (h *Hooks) PreRelease() error {
+	log.Infof("Run pre release hooks")
+	for _, cmd := range h.config.Hooks.PreRelease {
+		log.Debugf("Run %s", cmd)
+		err := h.runCommand(cmd)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// PostRelease runs after creating release
+func (h *Hooks) PostRelease() error {
+	log.Infof("Run post release hooks")
+	for _, cmd := range h.config.Hooks.PostRelease {
+		err := h.runCommand(cmd)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (h *Hooks) runCommand(command string) error {
+
+	splittedCmd := strings.Split(strings.ReplaceAll(command, "$RELEASE_VERSION", h.version.Next.Version.String()), " ")
+
+	cmd := exec.Command(splittedCmd[0], splittedCmd[1:]...)
+
+	cmdReader, err := cmd.StdoutPipe()
+	if err != nil {
+		return err
+	}
+
+	scanner := bufio.NewScanner(cmdReader)
+	go func() {
+		for scanner.Scan() {
+			log.WithField("cmd", splittedCmd[0]).Infof("%s\n", scanner.Text())
+		}
+	}()
+
+	return cmd.Run()
+}

internal/hooks/hooks_test.go

@@ -0,0 +1,103 @@
+package hooks_test
+
+import (
+	"os"
+	"testing"
+
+	"github.com/Masterminds/semver"
+	"github.com/Nightapes/go-semantic-release/internal/hooks"
+	"github.com/Nightapes/go-semantic-release/internal/shared"
+	"github.com/Nightapes/go-semantic-release/pkg/config"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestPreReleaseHooks(t *testing.T) {
+
+	os.Setenv("GO_WANT_HELPER_PROCESS", "1")
+	hooks := hooks.New(&config.ReleaseConfig{
+		Hooks: config.Hooks{
+			PreRelease: []string{
+				"go test -test.run=TestHelperProcess -- " + "$RELEASE_VERSION",
+			},
+		},
+	},
+		&shared.ReleaseVersion{
+			Next: shared.ReleaseVersionEntry{
+				Version: createVersion("1.0.0"),
+			},
+		})
+	err := hooks.PreRelease()
+	assert.NoError(t, err)
+	os.Unsetenv("GO_WANT_HELPER_PROCESS")
+
+}
+
+func TestPreReleaseHooksError(t *testing.T) {
+
+	hooks := hooks.New(&config.ReleaseConfig{
+		Hooks: config.Hooks{
+			PreRelease: []string{
+				"exit 1",
+			},
+		},
+	},
+		&shared.ReleaseVersion{
+			Next: shared.ReleaseVersionEntry{
+				Version: createVersion("1.0.0"),
+			},
+		})
+	err := hooks.PreRelease()
+	assert.Error(t, err)
+}
+
+func TestPostReleaseHooks(t *testing.T) {
+
+	os.Setenv("GO_WANT_HELPER_PROCESS", "1")
+	hooks := hooks.New(&config.ReleaseConfig{
+		Hooks: config.Hooks{
+			PostRelease: []string{
+				"go test -test.run=TestHelperProcess -- " + "$RELEASE_VERSION",
+			},
+		},
+	},
+		&shared.ReleaseVersion{
+			Next: shared.ReleaseVersionEntry{
+				Version: createVersion("1.0.0"),
+			},
+		})
+	err := hooks.PostRelease()
+	assert.NoError(t, err)
+	os.Unsetenv("GO_WANT_HELPER_PROCESS")
+
+}
+
+func TestPostReleaseHooksError(t *testing.T) {
+
+	hooks := hooks.New(&config.ReleaseConfig{
+		Hooks: config.Hooks{
+			PostRelease: []string{
+				"exit 1",
+			},
+		},
+	},
+		&shared.ReleaseVersion{
+			Next: shared.ReleaseVersionEntry{
+				Version: createVersion("1.0.0"),
+			},
+		})
+	err := hooks.PostRelease()
+	assert.Error(t, err)
+}
+
+func TestHelperProcess(t *testing.T) {
+	if os.Getenv("GO_WANT_HELPER_PROCESS") != "1" {
+
+		return
+	}
+	assert.Equal(t, "1.0.0", os.Args[3])
+}
+
+func createVersion(version string) *semver.Version {
+	ver, _ := semver.NewVersion(version)
+	return ver
+}