Golang rec.Log函數代碼示例

func ExampleLog() {
	// logging and waiting
	ch := rec.Log("[email protected]", "action", "arg1", 10, true)
	<-ch

	// logging without blocking
	rec.Log("[email protected]", "action-2", "arg1", 10, true)

	// logging and checking for errors
	ch = rec.Log("[email protected]", "action-3", "arg1", 10, true)
	if err, ok := <-ch; ok {
		panic(err)
	}
}

func appRebuildRoutes(w http.ResponseWriter, r *http.Request, t auth.Token) error {
	u, err := t.User()
	if err != nil {
		return err
	}
	a, err := getAppFromContext(r.URL.Query().Get(":app"), r)
	if err != nil {
		return err
	}
	allowed := permission.Check(t, permission.PermAppAdminRoutes,
		append(permission.Contexts(permission.CtxTeam, a.Teams),
			permission.Context(permission.CtxApp, a.Name),
			permission.Context(permission.CtxPool, a.Pool),
		)...,
	)
	if !allowed {
		return permission.ErrUnauthorized
	}
	rec.Log(u.Email, "app-rebuild-routes", "app="+r.URL.Query().Get(":app"))
	w.Header().Set("Content-Type", "application/json")
	result, err := a.RebuildRoutes()
	if err != nil {
		return err
	}
	return json.NewEncoder(w).Encode(&result)
}

func serviceDelete(w http.ResponseWriter, r *http.Request, t auth.Token) error {
	u, err := t.User()
	if err != nil {
		return err
	}
	rec.Log(u.Email, "delete-service", r.URL.Query().Get(":name"))
	s, err := getServiceByOwner(r.URL.Query().Get(":name"), u)
	if err != nil {
		return err
	}
	conn, err := db.Conn()
	if err != nil {
		return err
	}
	defer conn.Close()
	n, err := conn.ServiceInstances().Find(bson.M{"service_name": s.Name}).Count()
	if err != nil {
		return err
	}
	if n > 0 {
		msg := "This service cannot be removed because it has instances.\nPlease remove these instances before removing the service."
		return &errors.HTTP{Code: http.StatusForbidden, Message: msg}
	}
	err = s.Delete()
	if err != nil {
		return err
	}
	w.WriteHeader(http.StatusNoContent)
	return nil
}

func createUser(w http.ResponseWriter, r *http.Request) error {
	registrationEnabled, _ := config.GetBool("auth:user-registration")
	if !registrationEnabled {
		token := r.Header.Get("Authorization")
		t, err := app.AuthScheme.Auth(token)
		if err != nil {
			return createDisabledErr
		}
		user, err := t.User()
		if err != nil {
			return createDisabledErr
		}
		if !user.IsAdmin() {
			return createDisabledErr
		}
	}
	var u auth.User
	err := json.NewDecoder(r.Body).Decode(&u)
	if err != nil {
		return &errors.HTTP{Code: http.StatusBadRequest, Message: err.Error()}
	}
	_, err = app.AuthScheme.Create(&u)
	if err != nil {
		return handleAuthError(err)
	}
	rec.Log(u.Email, "create-user")
	w.WriteHeader(http.StatusCreated)
	return nil
}

func addUserToTeam(w http.ResponseWriter, r *http.Request, t auth.Token) error {
	teamName := r.URL.Query().Get(":team")
	email := r.URL.Query().Get(":user")
	u, err := t.User()
	if err != nil {
		return err
	}
	rec.Log(u.Email, "add-user-to-team", "team="+teamName, "user="+email)
	conn, err := db.Conn()
	if err != nil {
		return err
	}
	defer conn.Close()
	team, err := auth.GetTeam(teamName)
	if err != nil {
		return &errors.HTTP{Code: http.StatusNotFound, Message: "Team not found"}
	}
	if !team.ContainsUser(u) {
		msg := fmt.Sprintf("You are not authorized to add new users to the team %s", team.Name)
		return &errors.HTTP{Code: http.StatusForbidden, Message: msg}
	}
	user, err := auth.GetUserByEmail(email)
	if err != nil {
		return &errors.HTTP{Code: http.StatusNotFound, Message: "User not found"}
	}
	actions := []*action.Action{
		&addUserToTeamInRepositoryAction,
		&addUserToTeamInDatabaseAction,
	}
	pipeline := action.NewPipeline(actions...)
	return pipeline.Execute(user, team)
}

func unbindServiceInstance(w http.ResponseWriter, r *http.Request, t auth.Token) error {
	instanceName, appName, serviceName := r.URL.Query().Get(":instance"), r.URL.Query().Get(":app"),
		r.URL.Query().Get(":service")
	noRestart, err := strconv.ParseBool(r.URL.Query().Get("noRestart"))
	if err != nil {
		return nil
	}
	u, err := t.User()
	if err != nil {
		return err
	}
	instance, a, err := getServiceInstance(serviceName, instanceName, appName, u)
	if err != nil {
		return err
	}
	rec.Log(u.Email, "unbind-app", "instance="+instanceName, "app="+appName)
	w.Header().Set("Content-Type", "application/json")
	keepAliveWriter := tsuruIo.NewKeepAliveWriter(w, 30*time.Second, "")
	defer keepAliveWriter.Stop()
	writer := &tsuruIo.SimpleJsonMessageEncoderWriter{Encoder: json.NewEncoder(keepAliveWriter)}
	err = instance.UnbindApp(a, !noRestart, writer)
	if err != nil {
		writer.Encode(tsuruIo.SimpleJsonMessage{Error: err.Error()})
		return nil
	}
	fmt.Fprintf(writer, "\nInstance %q is not bound to the app %q anymore.\n", instanceName, appName)
	return nil
}

func getEnv(w http.ResponseWriter, r *http.Request, t auth.Token) error {
	var variables []string
	if r.Body != nil {
		defer r.Body.Close()
		err := json.NewDecoder(r.Body).Decode(&variables)
		if err != nil && err != io.EOF {
			return err
		}
	}
	appName := r.URL.Query().Get(":app")
	var u *auth.User
	var err error
	if !t.IsAppToken() {
		u, err = t.User()
		if err != nil {
			return err
		}
		rec.Log(u.Email, "get-env", "app="+appName, fmt.Sprintf("envs=%s", variables))
	}
	app, err := getAppFromContext(appName, u, r)
	if err != nil {
		return err
	}
	return writeEnvVars(w, &app, variables...)
}

func grantAppAccess(w http.ResponseWriter, r *http.Request, t auth.Token) error {
	u, err := t.User()
	if err != nil {
		return err
	}
	appName := r.URL.Query().Get(":app")
	teamName := r.URL.Query().Get(":team")
	rec.Log(u.Email, "grant-app-access", "app="+appName, "team="+teamName)
	team := new(auth.Team)
	a, err := getAppFromContext(appName, u, r)
	if err != nil {
		return err
	}
	conn, err := db.Conn()
	if err != nil {
		return err
	}
	defer conn.Close()
	err = conn.Teams().Find(bson.M{"_id": teamName}).One(team)
	if err != nil {
		return &errors.HTTP{Code: http.StatusNotFound, Message: "Team not found"}
	}
	err = a.Grant(team)
	if err == app.ErrAlreadyHaveAccess {
		return &errors.HTTP{Code: http.StatusConflict, Message: err.Error()}
	}
	return err
}

func serviceDelete(w http.ResponseWriter, r *http.Request, t auth.Token) error {
	s, err := getService(r.URL.Query().Get(":name"))
	if err != nil {
		return err
	}
	allowed := permission.Check(t, permission.PermServiceDelete,
		append(permission.Contexts(permission.CtxTeam, s.OwnerTeams),
			permission.Context(permission.CtxService, s.Name),
		)...,
	)
	if !allowed {
		return permission.ErrUnauthorized
	}
	rec.Log(t.GetUserName(), "delete-service", r.URL.Query().Get(":name"))
	instances, err := service.GetServiceInstancesByServices([]service.Service{s})
	if err != nil {
		return err
	}
	if len(instances) > 0 {
		msg := "This service cannot be removed because it has instances.\nPlease remove these instances before removing the service."
		return &errors.HTTP{Code: http.StatusForbidden, Message: msg}
	}
	err = s.Delete()
	if err != nil {
		return err
	}
	w.WriteHeader(http.StatusNoContent)
	return nil
}

func unsetEnv(w http.ResponseWriter, r *http.Request, t *auth.Token) error {
	msg := "You must provide the list of environment variables, in JSON format"
	if r.Body == nil {
		return &errors.HTTP{Code: http.StatusBadRequest, Message: msg}
	}
	var variables []string
	defer r.Body.Close()
	err := json.NewDecoder(r.Body).Decode(&variables)
	if err != nil {
		return &errors.HTTP{Code: http.StatusBadRequest, Message: msg}
	}
	if len(variables) == 0 {
		return &errors.HTTP{Code: http.StatusBadRequest, Message: msg}
	}
	appName := r.URL.Query().Get(":app")
	u, err := t.User()
	if err != nil {
		return err
	}
	rec.Log(u.Email, "unset-env", "app="+appName, fmt.Sprintf("envs=%s", variables))
	app, err := getApp(appName, u)
	if err != nil {
		return err
	}
	return app.UnsetEnvs(variables, true)
}

func setEnv(w http.ResponseWriter, r *http.Request, t *auth.Token) error {
	msg := "You must provide the environment variables in a JSON object"
	if r.Body == nil {
		return &errors.HTTP{Code: http.StatusBadRequest, Message: msg}
	}
	var variables map[string]string
	err := json.NewDecoder(r.Body).Decode(&variables)
	if err != nil {
		return &errors.HTTP{Code: http.StatusBadRequest, Message: msg}
	}
	u, err := t.User()
	if err != nil {
		return err
	}
	appName := r.URL.Query().Get(":app")
	rec.Log(u.Email, "set-env", "app="+appName, variables)
	app, err := getApp(appName, u)
	if err != nil {
		return err
	}
	envs := make([]bind.EnvVar, 0, len(variables))
	for k, v := range variables {
		envs = append(envs, bind.EnvVar{Name: k, Value: v, Public: true})
	}
	return app.SetEnvs(envs, true)
}

func runCommand(w http.ResponseWriter, r *http.Request, t *auth.Token) error {
	w.Header().Set("Content-Type", "text")
	msg := "You must provide the command to run"
	if r.Body == nil {
		return &errors.HTTP{Code: http.StatusBadRequest, Message: msg}
	}
	c, err := ioutil.ReadAll(r.Body)
	if err != nil {
		return err
	}
	if len(c) < 1 {
		return &errors.HTTP{Code: http.StatusBadRequest, Message: msg}
	}
	u, err := t.User()
	if err != nil {
		return err
	}
	appName := r.URL.Query().Get(":app")
	once := r.URL.Query().Get("once")
	rec.Log(u.Email, "run-command", "app="+appName, "command="+string(c))
	app, err := getApp(appName, u)
	if err != nil {
		return err
	}
	return app.Run(string(c), w, once == "true")
}

func appDelete(w http.ResponseWriter, r *http.Request, t auth.Token) error {
	u, err := t.User()
	if err != nil {
		return err
	}
	a, err := getAppFromContext(r.URL.Query().Get(":app"), r)
	if err != nil {
		return err
	}
	canDelete := permission.Check(t, permission.PermAppDelete,
		append(permission.Contexts(permission.CtxTeam, a.Teams),
			permission.Context(permission.CtxApp, a.Name),
			permission.Context(permission.CtxPool, a.Pool),
		)...,
	)
	if !canDelete {
		return permission.ErrUnauthorized
	}
	rec.Log(u.Email, "app-delete", "app="+a.Name)
	keepAliveWriter := tsuruIo.NewKeepAliveWriter(w, 30*time.Second, "")
	defer keepAliveWriter.Stop()
	writer := &tsuruIo.SimpleJsonMessageEncoderWriter{Encoder: json.NewEncoder(keepAliveWriter)}
	err = app.Delete(&a, writer)
	if err != nil {
		writer.Encode(tsuruIo.SimpleJsonMessage{Error: err.Error()})
	}
	return nil
}

func getEnv(w http.ResponseWriter, r *http.Request, t auth.Token) error {
	var variables []string
	if r.Body != nil {
		defer r.Body.Close()
		err := json.NewDecoder(r.Body).Decode(&variables)
		if err != nil && err != io.EOF {
			return err
		}
	}
	appName := r.URL.Query().Get(":app")
	var u *auth.User
	var err error
	a, err := getAppFromContext(appName, r)
	if err != nil {
		return err
	}
	if !t.IsAppToken() {
		u, err = t.User()
		if err != nil {
			return err
		}
		rec.Log(u.Email, "get-env", "app="+appName, fmt.Sprintf("envs=%s", variables))
		allowed := permission.Check(t, permission.PermAppReadEnv,
			append(permission.Contexts(permission.CtxTeam, a.Teams),
				permission.Context(permission.CtxApp, a.Name),
				permission.Context(permission.CtxPool, a.Pool),
			)...,
		)
		if !allowed {
			return permission.ErrUnauthorized
		}
	}
	return writeEnvVars(w, &a, variables...)
}

func updateApp(w http.ResponseWriter, r *http.Request, t auth.Token) error {
	var updateData app.App
	defer r.Body.Close()
	body, err := ioutil.ReadAll(r.Body)
	if err != nil {
		return err
	}
	if err = json.Unmarshal(body, &updateData); err != nil {
		return err
	}
	appName := r.URL.Query().Get(":appname")
	a, err := getAppFromContext(appName, r)
	if err != nil {
		return err
	}
	if updateData.Description != "" {
		allowed := permission.Check(t, permission.PermAppUpdate,
			append(permission.Contexts(permission.CtxTeam, a.Teams),
				permission.Context(permission.CtxApp, a.Name),
				permission.Context(permission.CtxPool, a.Pool),
			)...,
		)
		if !allowed {
			return permission.ErrUnauthorized
		}
		a.Description = updateData.Description
	}
	u, err := t.User()
	if err != nil {
		return err
	}
	rec.Log(u.Email, "update-app", "app="+a.Name, "description="+a.Description)
	return a.Update()
}