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/*
* 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 (
"context"
"errors"
"fmt"
"os"
"reflect"
"sync"
"github.com/minio/minio/cmd/crypto"
xhttp "github.com/minio/minio/cmd/http"
"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/iam/policy"
"github.com/minio/minio/pkg/iam/validator"
xnet "github.com/minio/minio/pkg/net"
)
// 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 = "33"
type serverConfig = serverConfigV33
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 {
if globalIsEnvRegion {
return globalServerRegion
}
if s == nil {
return ""
}
return s.Region
}
// SetCredential sets new credential and returns the previous credential.
func (s *serverConfig) SetCredential(creds auth.Credentials) (prevCred auth.Credentials) {
if creds.IsValid() && globalActiveCred.IsValid() {
globalActiveCred = creds
}
// 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 {
if globalActiveCred.IsValid() {
return globalActiveCred
}
return s.Credential
}
// SetWorm set if worm is enabled.
func (s *serverConfig) SetWorm(b bool) {
// Set the new value.
s.Worm = BoolFlag(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) {
if globalIsStorageClass {
return globalStandardStorageClass, globalRRStorageClass
}
if s == nil {
return storageClass{}, storageClass{}
}
return s.StorageClass.Standard, s.StorageClass.RRS
}
// GetWorm get current credentials.
func (s *serverConfig) GetWorm() bool {
if globalIsEnvWORM {
return globalWORMEnabled
}
if s == nil {
return false
}
return bool(s.Worm)
}
// SetCacheConfig sets the current cache config
func (s *serverConfig) SetCacheConfig(drives, exclude []string, expiry int, maxuse int) {
s.Cache.Drives = drives
s.Cache.Exclude = exclude
s.Cache.Expiry = expiry
s.Cache.MaxUse = maxuse
}
// GetCacheConfig gets the current cache config
func (s *serverConfig) GetCacheConfig() CacheConfig {
if globalIsDiskCacheEnabled {
return CacheConfig{
Drives: globalCacheDrives,
Exclude: globalCacheExcludes,
Expiry: globalCacheExpiry,
MaxUse: globalCacheMaxUse,
}
}
if s == nil {
return CacheConfig{}
}
return s.Cache
}
func (s *serverConfig) Validate() error {
if s == nil {
return nil
}
if s.Version != serverConfigVersion {
return fmt.Errorf("configuration version mismatch. Expected: ‘%s’, Got: ‘%s’", serverConfigVersion, s.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 && !s.Credential.IsValid() {
return errors.New("invalid credential in config file")
}
// Region: nothing to validate
// Worm, Cache and StorageClass values are already validated during json unmarshal
for _, v := range s.Notify.AMQP {
if err := v.Validate(); err != nil {
return fmt.Errorf("amqp: %s", err)
}
}
for _, v := range s.Notify.Elasticsearch {
if err := v.Validate(); err != nil {
return fmt.Errorf("elasticsearch: %s", err)
}
}
for _, v := range s.Notify.Kafka {
if err := v.Validate(); err != nil {
return fmt.Errorf("kafka: %s", err)
}
}
for _, v := range s.Notify.MQTT {
if err := v.Validate(); err != nil {
return fmt.Errorf("mqtt: %s", err)
}
}
for _, v := range s.Notify.MySQL {
if err := v.Validate(); err != nil {
return fmt.Errorf("mysql: %s", err)
}
}
for _, v := range s.Notify.NATS {
if err := v.Validate(); err != nil {
return fmt.Errorf("nats: %s", err)
}
}
for _, v := range s.Notify.NSQ {
if err := v.Validate(); err != nil {
return fmt.Errorf("nsq: %s", err)
}
}
for _, v := range s.Notify.PostgreSQL {
if err := v.Validate(); err != nil {
return fmt.Errorf("postgreSQL: %s", err)
}
}
for _, v := range s.Notify.Redis {
if err := v.Validate(); err != nil {
return fmt.Errorf("redis: %s", err)
}
}
for _, v := range s.Notify.Webhook {
if err := v.Validate(); err != nil {
return fmt.Errorf("webhook: %s", err)
}
}
return nil
}
// SetCompressionConfig sets the current compression config
func (s *serverConfig) SetCompressionConfig(extensions []string, mimeTypes []string) {
s.Compression.Extensions = extensions
s.Compression.MimeTypes = mimeTypes
s.Compression.Enabled = globalIsCompressionEnabled
}
// GetCompressionConfig gets the current compression config
func (s *serverConfig) GetCompressionConfig() compressionConfig {
return s.Compression
}
func (s *serverConfig) loadFromEnvs() {
// If env is set override the credentials from config file.
if globalIsEnvCreds {
s.SetCredential(globalActiveCred)
}
if globalIsEnvWORM {
s.SetWorm(globalWORMEnabled)
}
if globalIsEnvRegion {
s.SetRegion(globalServerRegion)
}
if globalIsStorageClass {
s.SetStorageClass(globalStandardStorageClass, globalRRStorageClass)
}
if globalIsDiskCacheEnabled {
s.SetCacheConfig(globalCacheDrives, globalCacheExcludes, globalCacheExpiry, globalCacheMaxUse)
}
if err := Environment.LookupKMSConfig(s.KMS); err != nil {
logger.FatalIf(err, "Unable to setup the KMS")
}
if globalIsEnvCompression {
s.SetCompressionConfig(globalCompressExtensions, globalCompressMimeTypes)
}
if jwksURL, ok := os.LookupEnv("MINIO_IAM_JWKS_URL"); ok {
if u, err := xnet.ParseURL(jwksURL); err == nil {
s.OpenID.JWKS.URL = u
logger.FatalIf(s.OpenID.JWKS.PopulatePublicKey(), "Unable to populate public key from JWKS URL")
}
}
if opaURL, ok := os.LookupEnv("MINIO_IAM_OPA_URL"); ok {
if u, err := xnet.ParseURL(opaURL); err == nil {
s.Policy.OPA.URL = u
s.Policy.OPA.AuthToken = os.Getenv("MINIO_IAM_OPA_AUTHTOKEN")
}
}
}
// TestNotificationTargets tries to establish connections to all notification
// targets when enabled. This is a good way to make sure all configurations
// set by the user can work.
func (s *serverConfig) TestNotificationTargets() error {
for k, v := range s.Notify.AMQP {
if !v.Enable {
continue
}
t, err := target.NewAMQPTarget(k, v)
if err != nil {
return fmt.Errorf("amqp(%s): %s", k, err.Error())
}
t.Close()
}
for k, v := range s.Notify.Elasticsearch {
if !v.Enable {
continue
}
t, err := target.NewElasticsearchTarget(k, v)
if err != nil {
return fmt.Errorf("elasticsearch(%s): %s", k, err.Error())
}
t.Close()
}
for k, v := range s.Notify.Kafka {
if !v.Enable {
continue
}
t, err := target.NewKafkaTarget(k, v)
if err != nil {
return fmt.Errorf("kafka(%s): %s", k, err.Error())
}
t.Close()
}
for k, v := range s.Notify.MQTT {
if !v.Enable {
continue
}
t, err := target.NewMQTTTarget(k, v)
if err != nil {
return fmt.Errorf("mqtt(%s): %s", k, err.Error())
}
t.Close()
}
for k, v := range s.Notify.MySQL {
if !v.Enable {
continue
}
t, err := target.NewMySQLTarget(k, v)
if err != nil {
return fmt.Errorf("mysql(%s): %s", k, err.Error())
}
t.Close()
}
for k, v := range s.Notify.NATS {
if !v.Enable {
continue
}
t, err := target.NewNATSTarget(k, v)
if err != nil {
return fmt.Errorf("nats(%s): %s", k, err.Error())
}
t.Close()
}
for k, v := range s.Notify.NSQ {
if !v.Enable {
continue
}
t, err := target.NewNSQTarget(k, v)
if err != nil {
return fmt.Errorf("nsq(%s): %s", k, err.Error())
}
t.Close()
}
for k, v := range s.Notify.PostgreSQL {
if !v.Enable {
continue
}
t, err := target.NewPostgreSQLTarget(k, v)
if err != nil {
return fmt.Errorf("postgreSQL(%s): %s", k, err.Error())
}
t.Close()
}
for k, v := range s.Notify.Redis {
if !v.Enable {
continue
}
t, err := target.NewRedisTarget(k, v)
if err != nil {
return fmt.Errorf("redis(%s): %s", k, err.Error())
}
t.Close()
}
return nil
}
// 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.StorageClass != t.StorageClass:
return "StorageClass configuration differs"
case !reflect.DeepEqual(s.Cache, t.Cache):
return "Cache configuration differs"
case !reflect.DeepEqual(s.Compression, t.Compression):
return "Compression 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.NSQ, t.Notify.NSQ):
return "NSQ 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.Logger, t.Logger):
return "Logger configuration differs"
case !reflect.DeepEqual(s.KMS, t.KMS):
return "KMS 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,
StorageClass: storageClassConfig{
Standard: storageClass{},
RRS: storageClass{},
},
Cache: CacheConfig{
Drives: []string{},
Exclude: []string{},
Expiry: globalCacheExpiry,
MaxUse: globalCacheMaxUse,
},
KMS: crypto.KMSConfig{},
Notify: notifier{},
Compression: compressionConfig{
Enabled: false,
Extensions: globalCompressExtensions,
MimeTypes: globalCompressMimeTypes,
},
}
// 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.NSQ = make(map[string]target.NSQArgs)
srvCfg.Notify.NSQ["1"] = target.NSQArgs{}
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
srvCfg.Cache.MaxUse = globalCacheMaxUse
// Console logging is on by default
srvCfg.Logger.Console.Enabled = true
// Create an example of HTTP logger
srvCfg.Logger.HTTP = make(map[string]loggerHTTP)
srvCfg.Logger.HTTP["target1"] = loggerHTTP{Endpoint: "https://username:password@example.com/api"}
return srvCfg
}
func (s *serverConfig) loadToCachedConfigs() {
if !globalIsEnvCreds {
globalActiveCred = s.GetCredential()
}
if !globalIsEnvWORM {
globalWORMEnabled = s.GetWorm()
}
if !globalIsEnvRegion {
globalServerRegion = s.GetRegion()
}
if !globalIsStorageClass {
globalStandardStorageClass, globalRRStorageClass = s.GetStorageClass()
}
if !globalIsDiskCacheEnabled {
cacheConf := s.GetCacheConfig()
globalCacheDrives = cacheConf.Drives
globalCacheExcludes = cacheConf.Exclude
globalCacheExpiry = cacheConf.Expiry
globalCacheMaxUse = cacheConf.MaxUse
}
if err := Environment.LookupKMSConfig(s.KMS); err != nil {
logger.FatalIf(err, "Unable to setup the KMS")
}
if !globalIsCompressionEnabled {
compressionConf := s.GetCompressionConfig()
globalCompressExtensions = compressionConf.Extensions
globalCompressMimeTypes = compressionConf.MimeTypes
globalIsCompressionEnabled = compressionConf.Enabled
}
globalIAMValidators = getAuthValidators(s)
if s.Policy.OPA.URL != nil && s.Policy.OPA.URL.String() != "" {
globalPolicyOPA = iampolicy.NewOpa(iampolicy.OpaArgs{
URL: s.Policy.OPA.URL,
AuthToken: s.Policy.OPA.AuthToken,
Transport: NewCustomHTTPTransport(),
CloseRespFn: xhttp.DrainBody,
})
}
}
// newSrvConfig - initialize a new server config, saves env parameters if
// found, otherwise use default parameters
func newSrvConfig(objAPI ObjectLayer) error {
// Initialize server config.
srvCfg := newServerConfig()
// Override any values from ENVs.
srvCfg.loadFromEnvs()
// Load values to cached global values.
srvCfg.loadToCachedConfigs()
// hold the mutex lock before a new config is assigned.
globalServerConfigMu.Lock()
globalServerConfig = srvCfg
globalServerConfigMu.Unlock()
// Save config into file.
return saveServerConfig(context.Background(), objAPI, globalServerConfig)
}
// getValidConfig - returns valid server configuration
func getValidConfig(objAPI ObjectLayer) (*serverConfig, error) {
srvCfg, err := readServerConfig(context.Background(), objAPI)
if err != nil {
return nil, err
}
return srvCfg, srvCfg.Validate()
}
// loadConfig - loads a new config from disk, overrides params from env
// if found and valid
func loadConfig(objAPI ObjectLayer) error {
srvCfg, err := getValidConfig(objAPI)
if err != nil {
return uiErrInvalidConfig(nil).Msg(err.Error())
}
// Override any values from ENVs.
srvCfg.loadFromEnvs()
// Load values to cached global values.
srvCfg.loadToCachedConfigs()
// hold the mutex lock before a new config is assigned.
globalServerConfigMu.Lock()
globalServerConfig = srvCfg
globalServerConfigMu.Unlock()
return nil
}
// getAuthValidators - returns ValidatorList which contains
// enabled providers in server config.
// A new authentication provider is added like below
// * Add a new provider in pkg/iam/validator package.
func getAuthValidators(config *serverConfig) *validator.Validators {
validators := validator.NewValidators()
if config.OpenID.JWKS.URL != nil {
validators.Add(validator.NewJWT(config.OpenID.JWKS))
}
return validators
}
// 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 {
targetList := event.NewTargetList()
if config == nil {
return targetList
}
for id, args := range config.Notify.AMQP {
if args.Enable {
newTarget, err := target.NewAMQPTarget(id, args)
if err != nil {
logger.LogIf(context.Background(), err)
continue
}
if err = targetList.Add(newTarget); err != nil {
logger.LogIf(context.Background(), err)
continue
}
}
}
for id, args := range config.Notify.Elasticsearch {
if args.Enable {
newTarget, err := target.NewElasticsearchTarget(id, args)
if err != nil {
logger.LogIf(context.Background(), err)
continue
}
if err = targetList.Add(newTarget); err != nil {
logger.LogIf(context.Background(), err)
continue
}
}
}
for id, args := range config.Notify.Kafka {
if args.Enable {
newTarget, err := target.NewKafkaTarget(id, args)
if err != nil {
logger.LogIf(context.Background(), err)
continue
}
if err = targetList.Add(newTarget); err != nil {
logger.LogIf(context.Background(), err)
continue
}
}
}
for id, args := range config.Notify.MQTT {
if args.Enable {
args.RootCAs = globalRootCAs
newTarget, err := target.NewMQTTTarget(id, args)
if err != nil {
logger.LogIf(context.Background(), err)
continue
}
if err = targetList.Add(newTarget); err != nil {
logger.LogIf(context.Background(), err)
continue
}
}
}
for id, args := range config.Notify.MySQL {
if args.Enable {
newTarget, err := target.NewMySQLTarget(id, args)
if err != nil {
logger.LogIf(context.Background(), err)
continue
}
if err = targetList.Add(newTarget); err != nil {
logger.LogIf(context.Background(), err)
continue
}
}
}
for id, args := range config.Notify.NATS {
if args.Enable {
newTarget, err := target.NewNATSTarget(id, args)
if err != nil {
logger.LogIf(context.Background(), err)
continue
}
if err = targetList.Add(newTarget); err != nil {
logger.LogIf(context.Background(), err)
continue
}
}
}
for id, args := range config.Notify.NSQ {
if args.Enable {
newTarget, err := target.NewNSQTarget(id, args)
if err != nil {
logger.LogIf(context.Background(), err)
continue
}
if err = targetList.Add(newTarget); err != nil {
logger.LogIf(context.Background(), err)
continue
}
}
}
for id, args := range config.Notify.PostgreSQL {
if args.Enable {
newTarget, err := target.NewPostgreSQLTarget(id, args)
if err != nil {
logger.LogIf(context.Background(), err)
continue
}
if err = targetList.Add(newTarget); err != nil {
logger.LogIf(context.Background(), err)
continue
}
}
}
for id, args := range config.Notify.Redis {
if args.Enable {
newTarget, err := target.NewRedisTarget(id, args)
if err != nil {
logger.LogIf(context.Background(), err)
continue
}
if err = targetList.Add(newTarget); err != nil {
logger.LogIf(context.Background(), err)
continue
}
}
}
for id, args := range config.Notify.Webhook {
if args.Enable {
args.RootCAs = globalRootCAs
newTarget := target.NewWebhookTarget(id, args)
if err := targetList.Add(newTarget); err != nil {
logger.LogIf(context.Background(), err)
continue
}
}
}
return targetList
}