Fix cli "Before" handling (go-gitea#35797)

Regression of go-gitea#34973

Fix go-gitea#35796

Author: wxiaoguang

cmd/cmd.go

@@ -121,6 +121,12 @@ func globalBool(c *cli.Command, name string) bool {
 // Any log appears in git stdout pipe will break the git protocol, eg: client can't push and hangs forever.
 func PrepareConsoleLoggerLevel(defaultLevel log.Level) func(context.Context, *cli.Command) (context.Context, error) {
 	return func(ctx context.Context, c *cli.Command) (context.Context, error) {
+		if setting.InstallLock {
+			// During config loading, there might also be logs (for example: deprecation warnings).
+			// It must make sure that console logger is set up before config is loaded.
+			log.Error("Config is loaded before console logger is setup, it will cause bugs. Please fix it.")
+			return nil, errors.New("console logger must be setup before config is loaded")
+		}
 		level := defaultLevel
 		if globalBool(c, "quiet") {
 			level = log.FATAL

cmd/keys.go

@@ -19,7 +19,7 @@ import (
 var CmdKeys = &cli.Command{
 	Name:        "keys",
 	Usage:       "(internal) Should only be called by SSH server",
-	Hidden:      true, // internal commands shouldn't not be visible
+	Hidden:      true, // internal commands shouldn't be visible
 	Description: "Queries the Gitea database to get the authorized command for a given ssh key fingerprint",
 	Before:      PrepareConsoleLoggerLevel(log.FATAL),
 	Action:      runKeys,

cmd/main.go

@@ -50,11 +50,15 @@ DEFAULT CONFIGURATION:
 
 func prepareSubcommandWithGlobalFlags(originCmd *cli.Command) {
 	originBefore := originCmd.Before
-	originCmd.Before = func(ctx context.Context, cmd *cli.Command) (context.Context, error) {
-		prepareWorkPathAndCustomConf(cmd)
+	originCmd.Before = func(ctxOrig context.Context, cmd *cli.Command) (ctx context.Context, err error) {
+		ctx = ctxOrig
 		if originBefore != nil {
-			return originBefore(ctx, cmd)
+			ctx, err = originBefore(ctx, cmd)
+			if err != nil {
+				return ctx, err
+			}
 		}
+		prepareWorkPathAndCustomConf(cmd)
 		return ctx, nil
 	}
 }

cmd/main_test.go

@@ -15,6 +15,7 @@ import (
 	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/modules/test"
+	"code.gitea.io/gitea/modules/util"
 
 	"github.com/stretchr/testify/assert"
 	"github.com/urfave/cli/v3"
@@ -28,11 +29,11 @@ func makePathOutput(workPath, customPath, customConf string) string {
 	return fmt.Sprintf("WorkPath=%s\nCustomPath=%s\nCustomConf=%s", workPath, customPath, customConf)
 }
 
-func newTestApp(testCmdAction cli.ActionFunc) *cli.Command {
+func newTestApp(testCmd cli.Command) *cli.Command {
 	app := NewMainApp(AppVersion{})
-	testCmd := &cli.Command{Name: "test-cmd", Action: testCmdAction}
-	prepareSubcommandWithGlobalFlags(testCmd)
-	app.Commands = append(app.Commands, testCmd)
+	testCmd.Name = util.IfZero(testCmd.Name, "test-cmd")
+	prepareSubcommandWithGlobalFlags(&testCmd)
+	app.Commands = append(app.Commands, &testCmd)
 	app.DefaultCommand = testCmd.Name
 	return app
 }
@@ -156,9 +157,11 @@ func TestCliCmd(t *testing.T) {
 
 	for _, c := range cases {
 		t.Run(c.cmd, func(t *testing.T) {
-			app := newTestApp(func(ctx context.Context, cmd *cli.Command) error {
-				_, _ = fmt.Fprint(cmd.Root().Writer, makePathOutput(setting.AppWorkPath, setting.CustomPath, setting.CustomConf))
-				return nil
+			app := newTestApp(cli.Command{
+				Action: func(ctx context.Context, cmd *cli.Command) error {
+					_, _ = fmt.Fprint(cmd.Root().Writer, makePathOutput(setting.AppWorkPath, setting.CustomPath, setting.CustomConf))
+					return nil
+				},
 			})
 			for k, v := range c.env {
 				t.Setenv(k, v)
@@ -173,31 +176,54 @@ func TestCliCmd(t *testing.T) {
 }
 
 func TestCliCmdError(t *testing.T) {
-	app := newTestApp(func(ctx context.Context, cmd *cli.Command) error { return errors.New("normal error") })
+	app := newTestApp(cli.Command{Action: func(ctx context.Context, cmd *cli.Command) error { return errors.New("normal error") }})
 	r, err := runTestApp(app, "./gitea", "test-cmd")
 	assert.Error(t, err)
 	assert.Equal(t, 1, r.ExitCode)
 	assert.Empty(t, r.Stdout)
 	assert.Equal(t, "Command error: normal error\n", r.Stderr)
 
-	app = newTestApp(func(ctx context.Context, cmd *cli.Command) error { return cli.Exit("exit error", 2) })
+	app = newTestApp(cli.Command{Action: func(ctx context.Context, cmd *cli.Command) error { return cli.Exit("exit error", 2) }})
 	r, err = runTestApp(app, "./gitea", "test-cmd")
 	assert.Error(t, err)
 	assert.Equal(t, 2, r.ExitCode)
 	assert.Empty(t, r.Stdout)
 	assert.Equal(t, "exit error\n", r.Stderr)
 
-	app = newTestApp(func(ctx context.Context, cmd *cli.Command) error { return nil })
+	app = newTestApp(cli.Command{Action: func(ctx context.Context, cmd *cli.Command) error { return nil }})
 	r, err = runTestApp(app, "./gitea", "test-cmd", "--no-such")
 	assert.Error(t, err)
 	assert.Equal(t, 1, r.ExitCode)
 	assert.Empty(t, r.Stdout)
 	assert.Equal(t, "Incorrect Usage: flag provided but not defined: -no-such\n\n", r.Stderr)
 
-	app = newTestApp(func(ctx context.Context, cmd *cli.Command) error { return nil })
+	app = newTestApp(cli.Command{Action: func(ctx context.Context, cmd *cli.Command) error { return nil }})
 	r, err = runTestApp(app, "./gitea", "test-cmd")
 	assert.NoError(t, err)
 	assert.Equal(t, -1, r.ExitCode) // the cli.OsExiter is not called
 	assert.Empty(t, r.Stdout)
 	assert.Empty(t, r.Stderr)
 }
+
+func TestCliCmdBefore(t *testing.T) {
+	ctxNew := context.WithValue(context.Background(), any("key"), "value")
+	configValues := map[string]string{}
+	setting.CustomConf = "/tmp/any.ini"
+	var actionCtx context.Context
+	app := newTestApp(cli.Command{
+		Before: func(context.Context, *cli.Command) (context.Context, error) {
+			configValues["before"] = setting.CustomConf
+			return ctxNew, nil
+		},
+		Action: func(ctx context.Context, cmd *cli.Command) error {
+			configValues["action"] = setting.CustomConf
+			actionCtx = ctx
+			return nil
+		},
+	})
+	_, err := runTestApp(app, "./gitea", "--config", "/dev/null", "test-cmd")
+	assert.NoError(t, err)
+	assert.Equal(t, ctxNew, actionCtx)
+	assert.Equal(t, "/tmp/any.ini", configValues["before"], "BeforeFunc must be called before preparing config")
+	assert.Equal(t, "/dev/null", configValues["action"])
+}

tests/integration/cmd_keys_test.go

@@ -10,6 +10,7 @@ import (
 
 	"code.gitea.io/gitea/cmd"
 	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/test"
 	"code.gitea.io/gitea/modules/util"
 
 	"github.com/stretchr/testify/assert"
@@ -36,13 +37,15 @@ func Test_CmdKeys(t *testing.T) {
 		}
 		for _, tt := range tests {
 			t.Run(tt.name, func(t *testing.T) {
+				// FIXME: this test is not quite right. Each "command run" always re-initializes settings
+				defer test.MockVariableValue(&cmd.CmdKeys.Before, nil)() // don't re-initialize logger during the test
+
 				var stdout, stderr bytes.Buffer
 				app := &cli.Command{
 					Writer:    &stdout,
 					ErrWriter: &stderr,
 					Commands:  []*cli.Command{cmd.CmdKeys},
 				}
-				cmd.CmdKeys.HideHelp = true
 				err := app.Run(t.Context(), append([]string{"prog"}, tt.args...))
 				if tt.wantErr {
 					assert.Error(t, err)