minio/cmd/config-current.go

462 lines
13 KiB
Go
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/*
* Minio Cloud Storage, (C) 2016, 2017, 2018 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"
"reflect"
"sync"
"github.com/minio/minio/cmd/logger"
"github.com/minio/minio/pkg/auth"
"github.com/minio/minio/pkg/event"
"github.com/minio/minio/pkg/event/target"
"github.com/minio/minio/pkg/quick"
)
// Steps to move from version N to version N+1
// 1. Add new struct serverConfigVN+1 in config-versions.go
// 2. Set serverConfigVersion to "N+1"
// 3. Set serverConfig to serverConfigVN+1
// 4. Add new migration function (ex. func migrateVNToVN+1()) in config-migrate.go
// 5. Call migrateVNToVN+1() from migrateConfig() in config-migrate.go
// 6. Make changes in config-current_test.go for any test change
// Config version
const serverConfigVersion = "23"
type serverConfig = serverConfigV23
var (
// globalServerConfig server config.
globalServerConfig *serverConfig
globalServerConfigMu sync.RWMutex
)
// GetVersion get current config version.
func (s *serverConfig) GetVersion() string {
return s.Version
}
// SetRegion set a new region.
func (s *serverConfig) SetRegion(region string) {
// Save new region.
s.Region = region
}
// GetRegion get current region.
func (s *serverConfig) GetRegion() string {
return s.Region
}
// SetCredential sets new credential and returns the previous credential.
func (s *serverConfig) SetCredential(creds auth.Credentials) (prevCred auth.Credentials) {
// Save previous credential.
prevCred = s.Credential
// Set updated credential.
s.Credential = creds
// Return previous credential.
return prevCred
}
// GetCredentials get current credentials.
func (s *serverConfig) GetCredential() auth.Credentials {
return s.Credential
}
// SetBrowser set if browser is enabled.
func (s *serverConfig) SetBrowser(b bool) {
// Set the new value.
s.Browser = BrowserFlag(b)
}
func (s *serverConfig) SetStorageClass(standardClass, rrsClass storageClass) {
s.StorageClass.Standard = standardClass
s.StorageClass.RRS = rrsClass
}
// GetStorageClass reads storage class fields from current config.
// It returns the standard and reduced redundancy storage class struct
func (s *serverConfig) GetStorageClass() (storageClass, storageClass) {
return s.StorageClass.Standard, s.StorageClass.RRS
}
// GetCredentials get current credentials.
func (s *serverConfig) GetBrowser() bool {
return bool(s.Browser)
}
// SetCacheConfig sets the current cache config
func (s *serverConfig) SetCacheConfig(drives, exclude []string, expiry int) {
s.Cache.Drives = drives
s.Cache.Exclude = exclude
s.Cache.Expiry = expiry
}
// GetCacheConfig gets the current cache config
func (s *serverConfig) GetCacheConfig() CacheConfig {
return s.Cache
}
// Save config.
func (s *serverConfig) Save() error {
// Save config file.
return quick.Save(getConfigFile(), s)
}
// Returns the string describing a difference with the given
// configuration object. If the given configuration object is
// identical, an empty string is returned.
func (s *serverConfig) ConfigDiff(t *serverConfig) string {
switch {
case t == nil:
return "Given configuration is empty"
case s.Credential != t.Credential:
return "Credential configuration differs"
case s.Region != t.Region:
return "Region configuration differs"
case s.Browser != t.Browser:
return "Browser configuration differs"
case s.Domain != t.Domain:
return "Domain configuration differs"
case s.StorageClass != t.StorageClass:
return "StorageClass configuration differs"
case !reflect.DeepEqual(s.Cache, t.Cache):
return "Cache configuration differs"
case !reflect.DeepEqual(s.Notify.AMQP, t.Notify.AMQP):
return "AMQP Notification configuration differs"
case !reflect.DeepEqual(s.Notify.NATS, t.Notify.NATS):
return "NATS Notification configuration differs"
case !reflect.DeepEqual(s.Notify.Elasticsearch, t.Notify.Elasticsearch):
return "ElasticSearch Notification configuration differs"
case !reflect.DeepEqual(s.Notify.Redis, t.Notify.Redis):
return "Redis Notification configuration differs"
case !reflect.DeepEqual(s.Notify.PostgreSQL, t.Notify.PostgreSQL):
return "PostgreSQL Notification configuration differs"
case !reflect.DeepEqual(s.Notify.Kafka, t.Notify.Kafka):
return "Kafka Notification configuration differs"
case !reflect.DeepEqual(s.Notify.Webhook, t.Notify.Webhook):
return "Webhook Notification configuration differs"
case !reflect.DeepEqual(s.Notify.MySQL, t.Notify.MySQL):
return "MySQL Notification configuration differs"
case !reflect.DeepEqual(s.Notify.MQTT, t.Notify.MQTT):
return "MQTT Notification configuration differs"
case reflect.DeepEqual(s, t):
return ""
default:
// This case will not happen unless this comparison
// function has become stale.
return "Configuration differs"
}
}
func newServerConfig() *serverConfig {
cred, err := auth.GetNewCredentials()
logger.FatalIf(err, "")
srvCfg := &serverConfig{
Version: serverConfigVersion,
Credential: cred,
Region: globalMinioDefaultRegion,
Browser: true,
StorageClass: storageClassConfig{
Standard: storageClass{},
RRS: storageClass{},
},
Cache: CacheConfig{
Drives: []string{},
Exclude: []string{},
Expiry: globalCacheExpiry,
},
Notify: notifier{},
}
// Make sure to initialize notification configs.
srvCfg.Notify.AMQP = make(map[string]target.AMQPArgs)
srvCfg.Notify.AMQP["1"] = target.AMQPArgs{}
srvCfg.Notify.MQTT = make(map[string]target.MQTTArgs)
srvCfg.Notify.MQTT["1"] = target.MQTTArgs{}
srvCfg.Notify.Elasticsearch = make(map[string]target.ElasticsearchArgs)
srvCfg.Notify.Elasticsearch["1"] = target.ElasticsearchArgs{}
srvCfg.Notify.Redis = make(map[string]target.RedisArgs)
srvCfg.Notify.Redis["1"] = target.RedisArgs{}
srvCfg.Notify.NATS = make(map[string]target.NATSArgs)
srvCfg.Notify.NATS["1"] = target.NATSArgs{}
srvCfg.Notify.PostgreSQL = make(map[string]target.PostgreSQLArgs)
srvCfg.Notify.PostgreSQL["1"] = target.PostgreSQLArgs{}
srvCfg.Notify.MySQL = make(map[string]target.MySQLArgs)
srvCfg.Notify.MySQL["1"] = target.MySQLArgs{}
srvCfg.Notify.Kafka = make(map[string]target.KafkaArgs)
srvCfg.Notify.Kafka["1"] = target.KafkaArgs{}
srvCfg.Notify.Webhook = make(map[string]target.WebhookArgs)
srvCfg.Notify.Webhook["1"] = target.WebhookArgs{}
srvCfg.Cache.Drives = make([]string, 0)
srvCfg.Cache.Exclude = make([]string, 0)
srvCfg.Cache.Expiry = globalCacheExpiry
return srvCfg
}
// newConfig - initialize a new server config, saves env parameters if
// found, otherwise use default parameters
func newConfig() error {
// Initialize server config.
srvCfg := newServerConfig()
// 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)
}
if globalIsEnvDomainName {
srvCfg.Domain = globalDomainName
}
if globalIsStorageClass {
srvCfg.SetStorageClass(globalStandardStorageClass, globalRRStorageClass)
}
if globalIsDiskCacheEnabled {
srvCfg.SetCacheConfig(globalCacheDrives, globalCacheExcludes, globalCacheExpiry)
}
// hold the mutex lock before a new config is assigned.
// Save the new config globally.
// unlock the mutex.
globalServerConfigMu.Lock()
globalServerConfig = srvCfg
globalServerConfigMu.Unlock()
// Save config into file.
return globalServerConfig.Save()
}
// getValidConfig - returns valid server configuration
func getValidConfig() (*serverConfig, error) {
srvCfg := &serverConfig{
Region: globalMinioDefaultRegion,
Browser: true,
}
if _, err := quick.Load(getConfigFile(), srvCfg); err != nil {
return nil, err
}
if srvCfg.Version != serverConfigVersion {
return nil, fmt.Errorf("configuration version mismatch. Expected: %s, Got: %s", serverConfigVersion, srvCfg.Version)
}
// 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 " + getConfigFile())
}
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 uiErrInvalidConfig(nil).Msg(err.Error())
}
// 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)
}
if globalIsEnvDomainName {
srvCfg.Domain = globalDomainName
}
if globalIsStorageClass {
srvCfg.SetStorageClass(globalStandardStorageClass, globalRRStorageClass)
}
if globalIsDiskCacheEnabled {
srvCfg.SetCacheConfig(globalCacheDrives, globalCacheExcludes, globalCacheExpiry)
}
// hold the mutex lock before a new config is assigned.
globalServerConfigMu.Lock()
globalServerConfig = srvCfg
if !globalIsEnvCreds {
globalActiveCred = globalServerConfig.GetCredential()
}
if !globalIsEnvBrowser {
globalIsBrowserEnabled = globalServerConfig.GetBrowser()
}
if !globalIsEnvRegion {
globalServerRegion = globalServerConfig.GetRegion()
}
if !globalIsEnvDomainName {
globalDomainName = globalServerConfig.Domain
}
if !globalIsStorageClass {
globalStandardStorageClass, globalRRStorageClass = globalServerConfig.GetStorageClass()
}
if !globalIsDiskCacheEnabled {
cacheConf := globalServerConfig.GetCacheConfig()
globalCacheDrives = cacheConf.Drives
globalCacheExcludes = cacheConf.Exclude
globalCacheExpiry = cacheConf.Expiry
}
globalServerConfigMu.Unlock()
return nil
}
// getNotificationTargets - returns TargetList which contains enabled targets in serverConfig.
// A new notification target is added like below
// * Add a new target in pkg/event/target package.
// * Add newly added target configuration to serverConfig.Notify.<TARGET_NAME>.
// * Handle the configuration in this function to create/add into TargetList.
func getNotificationTargets(config *serverConfig) (*event.TargetList, error) {
targetList := event.NewTargetList()
for id, args := range config.Notify.AMQP {
if args.Enable {
newTarget, err := target.NewAMQPTarget(id, args)
if err != nil {
return nil, err
}
if err = targetList.Add(newTarget); err != nil {
return nil, err
}
}
}
for id, args := range config.Notify.Elasticsearch {
if args.Enable {
newTarget, err := target.NewElasticsearchTarget(id, args)
if err != nil {
return nil, err
}
if err = targetList.Add(newTarget); err != nil {
return nil, err
}
}
}
for id, args := range config.Notify.Kafka {
if args.Enable {
newTarget, err := target.NewKafkaTarget(id, args)
if err != nil {
return nil, err
}
if err = targetList.Add(newTarget); err != nil {
return nil, err
}
}
}
for id, args := range config.Notify.MQTT {
if args.Enable {
newTarget, err := target.NewMQTTTarget(id, args)
if err != nil {
return nil, err
}
if err = targetList.Add(newTarget); err != nil {
return nil, err
}
}
}
for id, args := range config.Notify.MySQL {
if args.Enable {
newTarget, err := target.NewMySQLTarget(id, args)
if err != nil {
return nil, err
}
if err = targetList.Add(newTarget); err != nil {
return nil, err
}
}
}
for id, args := range config.Notify.NATS {
if args.Enable {
newTarget, err := target.NewNATSTarget(id, args)
if err != nil {
return nil, err
}
if err = targetList.Add(newTarget); err != nil {
return nil, err
}
}
}
for id, args := range config.Notify.PostgreSQL {
if args.Enable {
newTarget, err := target.NewPostgreSQLTarget(id, args)
if err != nil {
return nil, err
}
if err = targetList.Add(newTarget); err != nil {
return nil, err
}
}
}
for id, args := range config.Notify.Redis {
if args.Enable {
newTarget, err := target.NewRedisTarget(id, args)
if err != nil {
return nil, err
}
if err = targetList.Add(newTarget); err != nil {
return nil, err
}
}
}
for id, args := range config.Notify.Webhook {
if args.Enable {
newTarget := target.NewWebhookTarget(id, args)
if err := targetList.Add(newTarget); err != nil {
return nil, err
}
}
}
return targetList, nil
}