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Copy pathconfig-v19.go
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322 lines (263 loc) · 7.94 KB
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/*
* Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package cmd
import (
"errors"
"fmt"
"io/ioutil"
"sync"
"github.com/minio/minio/pkg/quick"
"github.com/tidwall/gjson"
)
// Config version
const v19 = "19"
var (
// serverConfig server config.
serverConfig *serverConfigV19
serverConfigMu sync.RWMutex
)
// serverConfigV19 server configuration version '19' which is like
// version '18' except it adds support for MQTT notifications.
type serverConfigV19 struct {
sync.RWMutex
Version string `json:"version"`
// S3 API configuration.
Credential credential `json:"credential"`
Region string `json:"region"`
Browser BrowserFlag `json:"browser"`
// Additional error logging configuration.
Logger *loggers `json:"logger"`
// Notification queue configuration.
Notify *notifier `json:"notify"`
}
// GetVersion get current config version.
func (s *serverConfigV19) GetVersion() string {
s.RLock()
defer s.RUnlock()
return s.Version
}
// SetRegion set new region.
func (s *serverConfigV19) SetRegion(region string) {
s.Lock()
defer s.Unlock()
s.Region = region
}
// GetRegion get current region.
func (s *serverConfigV19) GetRegion() string {
s.RLock()
defer s.RUnlock()
return s.Region
}
// SetCredentials set new credentials.
func (s *serverConfigV19) SetCredential(creds credential) {
s.Lock()
defer s.Unlock()
// Set updated credential.
s.Credential = creds
}
// GetCredentials get current credentials.
func (s *serverConfigV19) GetCredential() credential {
s.RLock()
defer s.RUnlock()
return s.Credential
}
// SetBrowser set if browser is enabled.
func (s *serverConfigV19) SetBrowser(b bool) {
s.Lock()
defer s.Unlock()
// Set the new value.
s.Browser = BrowserFlag(b)
}
// GetCredentials get current credentials.
func (s *serverConfigV19) GetBrowser() bool {
s.RLock()
defer s.RUnlock()
return bool(s.Browser)
}
// Save config.
func (s *serverConfigV19) Save() error {
s.RLock()
defer s.RUnlock()
// Save config file.
return quick.Save(getConfigFile(), s)
}
func newServerConfigV19() *serverConfigV19 {
srvCfg := &serverConfigV19{
Version: v19,
Credential: mustGetNewCredential(),
Region: globalMinioDefaultRegion,
Browser: true,
Logger: &loggers{},
Notify: ¬ifier{},
}
// Enable console logger by default on a fresh run.
srvCfg.Logger.Console = NewConsoleLogger()
// Make sure to initialize notification configs.
srvCfg.Notify.AMQP = make(map[string]amqpNotify)
srvCfg.Notify.AMQP["1"] = amqpNotify{}
srvCfg.Notify.MQTT = make(map[string]mqttNotify)
srvCfg.Notify.MQTT["1"] = mqttNotify{}
srvCfg.Notify.ElasticSearch = make(map[string]elasticSearchNotify)
srvCfg.Notify.ElasticSearch["1"] = elasticSearchNotify{}
srvCfg.Notify.Redis = make(map[string]redisNotify)
srvCfg.Notify.Redis["1"] = redisNotify{}
srvCfg.Notify.NATS = make(map[string]natsNotify)
srvCfg.Notify.NATS["1"] = natsNotify{}
srvCfg.Notify.PostgreSQL = make(map[string]postgreSQLNotify)
srvCfg.Notify.PostgreSQL["1"] = postgreSQLNotify{}
srvCfg.Notify.MySQL = make(map[string]mySQLNotify)
srvCfg.Notify.MySQL["1"] = mySQLNotify{}
srvCfg.Notify.Kafka = make(map[string]kafkaNotify)
srvCfg.Not
8000
ify.Kafka["1"] = kafkaNotify{}
srvCfg.Notify.Webhook = make(map[string]webhookNotify)
srvCfg.Notify.Webhook["1"] = webhookNotify{}
return srvCfg
}
// newConfig - initialize a new server config, saves env parameters if
// found, otherwise use default parameters
func newConfig() error {
// Initialize server config.
srvCfg := newServerConfigV19()
// If env is set override the credentials from config file.
if globalIsEnvCreds {
srvCfg.SetCredential(globalActiveCred)
}
if globalIsEnvBrowser {
srvCfg.SetBrowser(globalIsBrowserEnabled)
}
if globalIsEnvRegion {
srvCfg.SetRegion(globalServerRegion)
}
// hold the mutex lock before a new config is assigned.
// Save the new config globally.
// unlock the mutex.
serverConfigMu.Lock()
serverConfig = srvCfg
serverConfigMu.Unlock()
// Save config into file.
return serverConfig.Save()
}
// doCheckDupJSONKeys recursively detects duplicate json keys
func doCheckDupJSONKeys(key, value gjson.Result) error {
// Key occurrences map of the current scope to count
// if there is any duplicated json key.
keysOcc := make(map[string]int)
// Holds the found error
var checkErr error
// Iterate over keys in the current json scope
value.ForEach(func(k, v gjson.Result) bool {
// If current key is not null, check if its
// value contains some duplicated keys.
if k.Type != gjson.Null {
keysOcc[k.String()]++
checkErr = doCheckDupJSONKeys(k, v)
}
return checkErr == nil
})
// Check found err
if checkErr != nil {
return errors.New(key.String() + " => " + checkErr.Error())
}
// Check for duplicated keys
for k, v := range keysOcc {
if v > 1 {
return errors.New(key.String() + " => `" + k + "` entry is duplicated")
}
}
return nil
}
// Check recursively if a key is duplicated in the same json scope
// e.g.:
// `{ "key" : { "key" ..` is accepted
// `{ "key" : { "subkey" : "val1", "subkey": "val2" ..` throws subkey duplicated error
func checkDupJSONKeys(json string) error {
// Parse config with gjson library
config := gjson.Parse(json)
// Create a fake rootKey since root json doesn't seem to have representation
// in gjson library.
rootKey := gjson.Result{Type: gjson.String, Str: minioConfigFile}
// Check if loaded json contains any duplicated keys
return doCheckDupJSONKeys(rootKey, config)
}
// getValidConfig - returns valid server configuration
func getValidConfig() (*serverConfigV19, error) {
srvCfg := &serverConfigV19{
Region: globalMinioDefaultRegion,
Browser: true,
}
configFile := getConfigFile()
if _, err := quick.Load(configFile, srvCfg); err != nil {
return nil, err
}
if srvCfg.Version != v19 {
return nil, fmt.Errorf("configuration version mismatch. Expected: ‘%s’, Got: ‘%s’", v19, srvCfg.Version)
}
// Load config file json and check for duplication json keys
jsonBytes, err := ioutil.ReadFile(configFile)
if err != nil {
return nil, err
}
if err = checkDupJSONKeys(string(jsonBytes)); err != nil {
return nil, err
}
// Validate credential fields only when
// they are not set via the environment
// Error out if global is env credential is not set and config has invalid credential
if !globalIsEnvCreds && !srvCfg.Credential.IsValid() {
return nil, errors.New("invalid credential in config file " + configFile)
}
// Validate logger field
if err = srvCfg.Logger.Validate(); err != nil {
return nil, err
}
// Validate notify field
if err = srvCfg.Notify.Validate(); err != nil {
return nil, err
}
return srvCfg, nil
}
// loadConfig - loads a new config from disk, overrides params from env
// if found and valid
func loadConfig() error {
srvCfg, err := getValidConfig()
if err != nil {
return err
}
// If env is set override the credentials from config file.
if globalIsEnvCreds {
srvCfg.SetCredential(globalActiveCred)
}
if globalIsEnvBrowser {
srvCfg.SetBrowser(globalIsBrowserEnabled)
}
if globalIsEnvRegion {
srvCfg.SetRegion(globalServerRegion)
}
// hold the mutex lock before a new config is assigned.
serverConfigMu.Lock()
serverConfig = srvCfg
if !globalIsEnvCreds {
globalActiveCred = serverConfig.GetCredential()
}
if !globalIsEnvBrowser {
globalIsBrowserEnabled = serverConfig.GetBrowser()
}
if !globalIsEnvRegion {
globalServerRegion = serverConfig.GetRegion()
}
serverConfigMu.Unlock()
return nil
}