mirror of
https://github.com/minio/minio.git
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f3334159a4
- If browser field is missing or empty then default to "on". - If region field is empty or missing then default to "us-east-1" (S3 spec behavior)
371 lines
8.7 KiB
Go
371 lines
8.7 KiB
Go
/*
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* Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package cmd
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import (
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"errors"
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"fmt"
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"io/ioutil"
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"os"
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"strings"
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"sync"
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"github.com/minio/minio/pkg/quick"
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"github.com/tidwall/gjson"
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)
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// Read Write mutex for safe access to ServerConfig.
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var serverConfigMu sync.RWMutex
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// Config version
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var v14 = "14"
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// serverConfigV14 server configuration version '14' which is like
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// version '13' except it adds support of browser param.
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type serverConfigV14 struct {
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Version string `json:"version"`
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// S3 API configuration.
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Credential credential `json:"credential"`
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Region string `json:"region"`
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Browser string `json:"browser"`
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// Additional error logging configuration.
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Logger *logger `json:"logger"`
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// Notification queue configuration.
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Notify *notifier `json:"notify"`
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}
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func newServerConfigV14() *serverConfigV14 {
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srvCfg := &serverConfigV14{
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Version: v14,
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Region: globalMinioDefaultRegion,
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Logger: &logger{},
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Notify: ¬ifier{},
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}
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srvCfg.SetCredential(mustGetNewCredential())
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srvCfg.SetBrowser("on")
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// Enable console logger by default on a fresh run.
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srvCfg.Logger.Console = consoleLogger{
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Enable: true,
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Level: "error",
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}
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// Make sure to initialize notification configs.
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srvCfg.Notify.AMQP = make(map[string]amqpNotify)
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srvCfg.Notify.AMQP["1"] = amqpNotify{}
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srvCfg.Notify.ElasticSearch = make(map[string]elasticSearchNotify)
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srvCfg.Notify.ElasticSearch["1"] = elasticSearchNotify{}
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srvCfg.Notify.Redis = make(map[string]redisNotify)
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srvCfg.Notify.Redis["1"] = redisNotify{}
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srvCfg.Notify.NATS = make(map[string]natsNotify)
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srvCfg.Notify.NATS["1"] = natsNotify{}
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srvCfg.Notify.PostgreSQL = make(map[string]postgreSQLNotify)
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srvCfg.Notify.PostgreSQL["1"] = postgreSQLNotify{}
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srvCfg.Notify.Kafka = make(map[string]kafkaNotify)
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srvCfg.Notify.Kafka["1"] = kafkaNotify{}
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srvCfg.Notify.Webhook = make(map[string]webhookNotify)
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srvCfg.Notify.Webhook["1"] = webhookNotify{}
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return srvCfg
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}
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// newConfig - initialize a new server config, saves env parameters if
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// found, otherwise use default parameters
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func newConfig(envParams envParams) error {
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// Initialize server config.
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srvCfg := newServerConfigV14()
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// If env is set for a fresh start, save them to config file.
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if globalIsEnvCreds {
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srvCfg.SetCredential(envParams.creds)
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}
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if globalIsEnvBrowser {
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srvCfg.SetBrowser(envParams.browser)
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}
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// Create config path.
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if err := createConfigDir(); err != nil {
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return err
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}
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// hold the mutex lock before a new config is assigned.
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// Save the new config globally.
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// unlock the mutex.
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serverConfigMu.Lock()
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serverConfig = srvCfg
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serverConfigMu.Unlock()
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// Save config into file.
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return serverConfig.Save()
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}
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// loadConfig - loads a new config from disk, overrides params from env
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// if found and valid
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func loadConfig(envParams envParams) error {
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configFile := getConfigFile()
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if _, err := os.Stat(configFile); err != nil {
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return err
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}
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srvCfg := &serverConfigV14{}
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qc, err := quick.New(srvCfg)
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if err != nil {
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return err
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}
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if err = qc.Load(configFile); err != nil {
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return err
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}
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// If env is set override the credentials from config file.
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if globalIsEnvCreds {
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srvCfg.SetCredential(envParams.creds)
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}
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if globalIsEnvBrowser {
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srvCfg.SetBrowser(envParams.browser)
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}
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if strings.ToLower(srvCfg.GetBrowser()) == "off" {
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globalIsBrowserEnabled = false
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}
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// hold the mutex lock before a new config is assigned.
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serverConfigMu.Lock()
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// Save the loaded config globally.
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serverConfig = srvCfg
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serverConfigMu.Unlock()
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if serverConfig.Version != v14 {
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return errors.New("Unsupported config version `" + serverConfig.Version + "`.")
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}
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return nil
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}
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// doCheckDupJSONKeys recursively detects duplicate json keys
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func doCheckDupJSONKeys(key, value gjson.Result) error {
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// Key occurrences map of the current scope to count
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// if there is any duplicated json key.
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keysOcc := make(map[string]int)
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// Holds the found error
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var checkErr error
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// Iterate over keys in the current json scope
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value.ForEach(func(k, v gjson.Result) bool {
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// If current key is not null, check if its
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// value contains some duplicated keys.
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if k.Type != gjson.Null {
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keysOcc[k.String()]++
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checkErr = doCheckDupJSONKeys(k, v)
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}
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return checkErr == nil
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})
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// Check found err
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if checkErr != nil {
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return errors.New(key.String() + " => " + checkErr.Error())
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}
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// Check for duplicated keys
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for k, v := range keysOcc {
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if v > 1 {
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return errors.New(key.String() + " => `" + k + "` entry is duplicated")
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}
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}
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return nil
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}
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// Check recursively if a key is duplicated in the same json scope
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// e.g.:
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// `{ "key" : { "key" ..` is accepted
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// `{ "key" : { "subkey" : "val1", "subkey": "val2" ..` throws subkey duplicated error
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func checkDupJSONKeys(json string) error {
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// Parse config with gjson library
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config := gjson.Parse(json)
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// Create a fake rootKey since root json doesn't seem to have representation
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// in gjson library.
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rootKey := gjson.Result{Type: gjson.String, Str: minioConfigFile}
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// Check if loaded json contains any duplicated keys
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return doCheckDupJSONKeys(rootKey, config)
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}
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// validateConfig checks for
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func validateConfig() error {
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// Get file config path
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configFile := getConfigFile()
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srvCfg := &serverConfigV14{}
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// Load config file
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qc, err := quick.New(srvCfg)
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if err != nil {
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return err
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}
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if err = qc.Load(configFile); err != nil {
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return err
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}
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// Check if config version is valid
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if srvCfg.GetVersion() != v14 {
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return errors.New("bad config version, expected: " + v14)
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}
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// Load config file json and check for duplication json keys
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jsonBytes, err := ioutil.ReadFile(configFile)
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if err != nil {
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return err
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}
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if err := checkDupJSONKeys(string(jsonBytes)); err != nil {
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return err
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}
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// Validate region field
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if srvCfg.GetRegion() == "" {
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return errors.New("Region config value cannot be empty")
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}
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// Validate browser field
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if b := strings.ToLower(srvCfg.GetBrowser()); b != "on" && b != "off" {
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return fmt.Errorf("Browser config value %s is invalid", b)
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}
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// Validate credential field
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if !srvCfg.Credential.IsValid() {
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return errors.New("invalid credential")
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}
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// Validate logger field
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if err := srvCfg.Logger.Validate(); err != nil {
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return err
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}
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// Validate notify field
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if err := srvCfg.Notify.Validate(); err != nil {
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return err
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}
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return nil
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}
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// serverConfig server config.
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var serverConfig *serverConfigV14
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// GetVersion get current config version.
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func (s serverConfigV14) GetVersion() string {
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serverConfigMu.RLock()
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defer serverConfigMu.RUnlock()
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return s.Version
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}
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// SetRegion set new region.
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func (s *serverConfigV14) SetRegion(region string) {
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serverConfigMu.Lock()
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defer serverConfigMu.Unlock()
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// Empty region means "us-east-1" by default from S3 spec.
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if region == "" {
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region = "us-east-1"
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}
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s.Region = region
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}
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// GetRegion get current region.
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func (s serverConfigV14) GetRegion() string {
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serverConfigMu.RLock()
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defer serverConfigMu.RUnlock()
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if s.Region != "" {
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return s.Region
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} // region empty
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// Empty region means "us-east-1" by default from S3 spec.
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return "us-east-1"
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}
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// SetCredentials set new credentials.
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func (s *serverConfigV14) SetCredential(creds credential) {
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serverConfigMu.Lock()
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defer serverConfigMu.Unlock()
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// Set updated credential.
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s.Credential = creds
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}
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// GetCredentials get current credentials.
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func (s serverConfigV14) GetCredential() credential {
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serverConfigMu.RLock()
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defer serverConfigMu.RUnlock()
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return s.Credential
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}
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// SetBrowser set if browser is enabled.
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func (s *serverConfigV14) SetBrowser(v string) {
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serverConfigMu.Lock()
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defer serverConfigMu.Unlock()
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// Set browser param
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if v == "" {
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v = "on" // Browser is on by default.
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}
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// Set the new value.
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s.Browser = v
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}
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// GetCredentials get current credentials.
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func (s serverConfigV14) GetBrowser() string {
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serverConfigMu.RLock()
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defer serverConfigMu.RUnlock()
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if s.Browser != "" {
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return s.Browser
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} // empty browser.
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// Empty browser means "on" by default.
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return "on"
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}
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// Save config.
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func (s serverConfigV14) Save() error {
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serverConfigMu.RLock()
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defer serverConfigMu.RUnlock()
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// get config file.
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configFile := getConfigFile()
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// initialize quick.
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qc, err := quick.New(&s)
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if err != nil {
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return err
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}
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// Save config file.
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return qc.Save(configFile)
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}
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