feat: add download plugins flag

Author: christophwitzko

cmd/semantic-release/main.go

@@ -84,6 +84,12 @@ func cliHandler(cmd *cobra.Command, args []string) {
 		exitIfError(errors.New("terminating..."))
 	}()
 
+	if conf.DownloadPlugins {
+		exitIfError(pluginManager.FetchAllPlugins())
+		logger.Println("all plugins are downloaded")
+		os.Exit(0)
+	}
+
 	ci, err := pluginManager.GetCICondition()
 	exitIfError(err)
 	logger.Printf("ci-condition plugin: %s@%s\n", ci.Name(), ci.Version())

pkg/config/config.go

@@ -35,6 +35,7 @@ type Config struct {
 	AllowNoChanges                  bool
 	MaintainedVersion               string
 	PrependChangelog                bool
+	DownloadPlugins                 bool
 }
 
 func mustGetString(cmd *cobra.Command, name string) string {
@@ -122,6 +123,7 @@ func NewConfig(cmd *cobra.Command) (*Config, error) {
 		AllowNoChanges:                  mustGetBool(cmd, "allow-no-changes"),
 		MaintainedVersion:               viper.GetString("maintainedVersion"),
 		PrependChangelog:                mustGetBool(cmd, "prepend-changelog"),
+		DownloadPlugins:                 mustGetBool(cmd, "download-plugins"),
 	}
 	return conf, nil
 }
@@ -174,6 +176,7 @@ func InitConfig(cmd *cobra.Command) error {
 	cmd.Flags().Bool("allow-initial-development-versions", false, "semantic-release will start your initial development release at 0.1.0")
 	cmd.Flags().Bool("allow-no-changes", false, "exit with code 0 if no changes are found, useful if semantic-release is automatically run")
 	cmd.Flags().Bool("prepend-changelog", false, "if the changelog file already exist the new changelog is prepended")
+	cmd.Flags().Bool("download-plugins", false, "downloads all required plugins if needed")
 	cmd.Flags().SortFlags = true
 
 	viper.AddConfigPath(".")

pkg/plugin/manager/manager.go

@@ -116,3 +116,33 @@ func (m *PluginManager) GetChainedHooksExecutor() (*hooks.ChainedHooksExecutor,
 func (m *PluginManager) Stop() {
 	plugin.KillAllPlugins()
 }
+
+func (m *PluginManager) FetchAllPlugins() error {
+	pluginMap := map[string]string{
+		condition.CIConditionPluginName:        m.config.CIConditionPlugin,
+		provider.PluginName:                    m.config.ProviderPlugin,
+		analyzer.CommitAnalyzerPluginName:      m.config.CommitAnalyzerPlugin,
+		generator.ChangelogGeneratorPluginName: m.config.ChangelogGeneratorPlugin,
+	}
+	for t, name := range pluginMap {
+		_, err := discovery.FindPlugin(t, name)
+		if err != nil {
+			return err
+		}
+	}
+
+	for _, pl := range m.config.FilesUpdaterPlugins {
+		_, err := discovery.FindPlugin(updater.FilesUpdaterPluginName, pl)
+		if err != nil {
+			return err
+		}
+	}
+
+	for _, pl := range m.config.HooksPlugins {
+		_, err := discovery.FindPlugin(hooks.PluginName, pl)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}