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// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
package commands
import (
"bytes"
"encoding/json"
"fmt"
"os"
"reflect"
"strings"
"github.com/pkg/errors"
"github.com/spf13/cobra"
"github.com/mattermost/mattermost-server/mlog"
"github.com/mattermost/mattermost-server/model"
"github.com/mattermost/mattermost-server/utils"
)
var ConfigCmd = &cobra.Command{
Use: "config",
Short: "Configuration",
}
var ValidateConfigCmd = &cobra.Command{
Use: "validate",
Short: "Validate config file",
Long: "If the config file is valid, this command will output a success message and have a zero exit code. If it is invalid, this command will output an error and have a non-zero exit code.",
RunE: configValidateCmdF,
}
var ConfigSubpathCmd = &cobra.Command{
Use: "subpath",
Short: "Update client asset loading to use the configured subpath",
Long: "Update the hard-coded production client asset paths to take into account Mattermost running on a subpath.",
Example: ` config subpath
config subpath --path /mattermost
config subpath --path /`,
RunE: configSubpathCmdF,
}
var ConfigGetCmd = &cobra.Command{
Use: "get",
Short: "Get config setting",
Long: "Gets the value of a config setting by its name in dot notation.",
Example: `config get SqlSettings.DriverName`,
Args: cobra.ExactArgs(1),
RunE: configGetCmdF,
}
func init() {
ConfigSubpathCmd.Flags().String("path", "", "Optional subpath; defaults to value in SiteURL")
ConfigCmd.AddCommand(
ValidateConfigCmd,
ConfigSubpathCmd,
ConfigGetCmd,
)
RootCmd.AddCommand(ConfigCmd)
}
func configValidateCmdF(command *cobra.Command, args []string) error {
utils.TranslationsPreInit()
model.AppErrorInit(utils.T)
filePath, err := command.Flags().GetString("config")
if err != nil {
return err
}
filePath = utils.FindConfigFile(filePath)
file, err := os.Open(filePath)
if err != nil {
return err
}
decoder := json.NewDecoder(file)
config := model.Config{}
err = decoder.Decode(&config)
if err != nil {
return err
}
if _, err := file.Stat(); err != nil {
return err
}
if err := config.IsValid(); err != nil {
return errors.New(utils.T(err.Id))
}
CommandPrettyPrintln("The document is valid")
return nil
}
func configSubpathCmdF(command *cobra.Command, args []string) error {
a, err := InitDBCommandContextCobra(command)
if err != nil {
return err
}
defer a.Shutdown()
path, err := command.Flags().GetString("path")
if err != nil {
return errors.Wrap(err, "failed reading path")
}
if path == "" {
return utils.UpdateAssetsSubpathFromConfig(a.Config())
}
if err := utils.UpdateAssetsSubpath(path); err != nil {
return errors.Wrap(err, "failed to update assets subpath")
}
return nil
}
func configGetCmdF(command *cobra.Command, args []string) error {
app, err := InitDBCommandContextCobra(command)
if err != nil {
return err
}
defer app.Shutdown()
// create the model for config
// Note: app.Config() returns a pointer, make appropriate changes
config := app.Config()
// get the print config setting and any error if there is
out, err := printConfigValues(configToMap(*config), strings.Split(args[0], "."), args[0])
if err != nil {
return err
}
fmt.Printf("%s", out)
return nil
}
// printConfigValues function prints out the value of the configSettings working recursively or
// gives an error if config setting is not in the file.
func printConfigValues(configMap map[string]interface{}, configSetting []string, name string) (string, error) {
res, ok := configMap[configSetting[0]]
if !ok {
return "", fmt.Errorf("%s configuration setting is not in the file", name)
}
value := reflect.ValueOf(res)
switch value.Kind() {
case reflect.Map:
if len(configSetting) == 1 {
return printMap(value, 0), nil
}
return printConfigValues(res.(map[string]interface{}), configSetting[1:], name)
default:
if len(configSetting) == 1 {
return fmt.Sprintf("%s: \"%v\"\n", name, res), nil
}
return "", fmt.Errorf("%s configuration setting is not in the file", name)
}
}
// printMap takes a reflect.Value and return a string, recursively if its a map with the given tab settings.
func printMap(value reflect.Value, tabVal int) string {
// our output buffer
out := &bytes.Buffer{}
for _, key := range value.MapKeys() {
val := value.MapIndex(key)
if newVal, ok := val.Interface().(map[string]interface{}); !ok {
fmt.Fprintf(out, "%s", strings.Repeat("\t", tabVal))
fmt.Fprintf(out, "%v: \"%v\"\n", key.Interface(), val.Interface())
} else {
fmt.Fprintf(out, "%s", strings.Repeat("\t", tabVal))
fmt.Fprintf(out, "%v:\n", key.Interface())
// going one level in, increase the tab
tabVal++
fmt.Fprintf(out, "%s", printMap(reflect.ValueOf(newVal), tabVal))
// coming back one level, decrease the tab
tabVal--
}
}
return out.String()
}
// configToMap converts our config into a map
func configToMap(s interface{}) map[string]interface{} {
return structToMap(s)
}
// structToMap converts a struct into a map
func structToMap(t interface{}) map[string]interface{} {
defer func() {
if r := recover(); r != nil {
mlog.Error(fmt.Sprintf("Panicked in structToMap. This should never happen. %v", r))
}
}()
val := reflect.ValueOf(t)
if val.Kind() != reflect.Struct {
return nil
}
out := map[string]interface{}{}
for i := 0; i < val.NumField(); i++ {
field := val.Field(i)
var value interface{}
switch field.Kind() {
case reflect.Struct:
value = structToMap(field.Interface())
case reflect.Ptr:
indirectType := field.Elem()
if indirectType.Kind() == reflect.Struct {
value = structToMap(indirectType.Interface())
} else {
value = indirectType.Interface()
}
default:
value = field.Interface()
}
out[val.Type().Field(i).Name] = value
}
return out
}
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