Address config startup issues (#10439)

* support --config for the jobserver

* leverage viper to map MM_CONFIG to --config

cmd/mattermost/commands/config.go

@@ -17,6 +17,7 @@ import (
 	"github.com/mattermost/mattermost-server/config"
 	"github.com/mattermost/mattermost-server/model"
 	"github.com/mattermost/mattermost-server/utils"
+	"github.com/mattermost/viper"
 )
 
 var ConfigCmd = &cobra.Command{
@@ -121,10 +122,7 @@ func getConfigStore(command *cobra.Command) (config.Store, error) {
 		return nil, errors.Wrap(err, "failed to initialize i18n")
 	}
 
-	configDSN, err := command.Flags().GetString("config")
-	if err != nil {
-		return nil, errors.Wrap(err, "failed to parse --config flag")
-	}
+	configDSN := viper.GetString("config")
 
 	configStore, err := config.NewStore(configDSN, false)
 	if err != nil {

cmd/mattermost/commands/init.go

@@ -7,14 +7,12 @@ import (
 	"github.com/mattermost/mattermost-server/app"
 	"github.com/mattermost/mattermost-server/model"
 	"github.com/mattermost/mattermost-server/utils"
+	"github.com/mattermost/viper"
 	"github.com/spf13/cobra"
 )
 
 func InitDBCommandContextCobra(command *cobra.Command) (*app.App, error) {
-	config, err := command.Flags().GetString("config")
-	if err != nil {
-		return nil, err
-	}
+	config := viper.GetString("config")
 
 	a, err := InitDBCommandContext(config)
 

cmd/mattermost/commands/jobserver.go

@@ -9,13 +9,14 @@ import (
 	"syscall"
 
 	"github.com/mattermost/mattermost-server/mlog"
+	"github.com/mattermost/viper"
 	"github.com/spf13/cobra"
 )
 
 var JobserverCmd = &cobra.Command{
 	Use:   "jobserver",
 	Short: "Start the Mattermost job server",
-	Run:   jobserverCmdF,
+	RunE:  jobserverCmdF,
 }
 
 func init() {
@@ -25,15 +26,17 @@ func init() {
 	RootCmd.AddCommand(JobserverCmd)
 }
 
-func jobserverCmdF(command *cobra.Command, args []string) {
+func jobserverCmdF(command *cobra.Command, args []string) error {
 	// Options
 	noJobs, _ := command.Flags().GetBool("nojobs")
 	noSchedule, _ := command.Flags().GetBool("noschedule")
 
+	config := viper.GetString("config")
+
 	// Initialize
-	a, err := InitDBCommandContext("config.json")
+	a, err := InitDBCommandContext(config)
 	if err != nil {
-		panic(err.Error())
+		return err
 	}
 	defer a.Shutdown()
 
@@ -58,4 +61,6 @@ func jobserverCmdF(command *cobra.Command, args []string) {
 
 	// Cleanup anything that isn't handled by a defer statement
 	mlog.Info("Stopping Mattermost job server")
+
+	return nil
 }

cmd/mattermost/commands/root.go

@@ -4,6 +4,7 @@
 package commands
 
 import (
+	"github.com/mattermost/viper"
 	"github.com/spf13/cobra"
 )
 
@@ -25,4 +26,8 @@ func init() {
 	RootCmd.PersistentFlags().Bool("disableconfigwatch", false, "When set config.json will not be loaded from disk when the file is changed.")
 	RootCmd.PersistentFlags().Bool("platform", false, "This flag signifies that the user tried to start the command from the platform binary, so we can log a mssage")
 	RootCmd.PersistentFlags().MarkHidden("platform")
+
+	viper.SetEnvPrefix("mm")
+	viper.BindEnv("config")
+	viper.BindPFlag("config", RootCmd.PersistentFlags().Lookup("config"))
 }

cmd/mattermost/commands/server.go

@@ -17,6 +17,7 @@ import (
 	"github.com/mattermost/mattermost-server/utils"
 	"github.com/mattermost/mattermost-server/web"
 	"github.com/mattermost/mattermost-server/wsapi"
+	"github.com/mattermost/viper"
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 )
@@ -34,17 +35,14 @@ func init() {
 }
 
 func serverCmdF(command *cobra.Command, args []string) error {
-	configDSN, err := command.Flags().GetString("config")
-	if err != nil {
-		return err
-	}
+	configDSN := viper.GetString("config")
 
 	disableConfigWatch, _ := command.Flags().GetBool("disableconfigwatch")
 	usedPlatform, _ := command.Flags().GetBool("platform")
 
 	interruptChan := make(chan os.Signal, 1)
 
-	if err = utils.TranslationsPreInit(); err != nil {
+	if err := utils.TranslationsPreInit(); err != nil {
 		return errors.Wrapf(err, "unable to load Mattermost translation files")
 	}
 	configStore, err := config.NewStore(configDSN, !disableConfigWatch)