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storeBuilder.go
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storeBuilder.go
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//Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
//Licensed under the Universal Permissive License (UPL) Version 1.0 as shown at http://oss.oracle.com/licenses/upl.
package etcd
import (
"fmt"
"strconv"
"strings"
"github.com/coreos/etcd/clientv3"
"github.com/coreos/etcd/pkg/transport"
"github.com/teramoby/speedle-plus/pkg/errors"
log "github.com/sirupsen/logrus"
"github.com/teramoby/speedle-plus/api/pms"
"github.com/teramoby/speedle-plus/pkg/store"
"github.com/spf13/pflag"
)
const (
StoreType = "etcd"
//Following are keys of etcd store properties
IsEmbeddedEtcdKey = "IsEmbeddedEtcd"
EmbeddedEtcdDataDirKey = "EmbeddedEtcdDataDir"
EtcdEndpointKey = "EtcdEndpoint"
EtcdKeyPrefixKey = "EtcdKeyPrefix"
EtcdTLSClientCertFileKey = "EtcdTLSCertFile"
EtcdTLSClientKeyFileKey = "EtcdTLSKeyFile"
EtcdTLSClientTrustedCAFileKey = "EtcdTLSTrustedCAFile"
EtcdTLSAllowedCNKey = "EtcdTLSAllowedCN"
EtcdTLSServerNameKey = "EtcdTLSServerName"
EtcdTLSCRLFileKey = "EtcdTLSCRLFile"
EtcdTLSInsecureSkipVerifyKey = "EtcdTLSInsecureSkipVerify"
IsEmbeddedEtcdFlagName = "etcdstore-isembedded"
EmbeddedEtcdDataDirFlagName = "etcdstore-embeddedDataDir"
EtcdEndpointFlagName = "etcdstore-endpoint"
EtcdKeyPrefixFlagName = "etcdstore-keyprefix"
EtcdTLSClientCertFileFlagName = "etcdstore-tls-cert"
EtcdTLSClientKeyFileFlagName = "etcdstore-tls-key"
EtcdTLSClientTrustedCAFileFlagName = "etcdstore-tls-ca"
EtcdTLSAllowedCNFlagName = "etcdstore-tls-allowedCN"
EtcdTLSServerNameFlagName = "etcdstore-tls-serverName"
EtcdTLSCRLFileFlagName = "etcdstore-tls-crlFile"
EtcdTLSInsecureSkipVerifyFlagName = "etcdstore-tls-insecureSkipVerify"
//default property values
DefaultKeyPrefix = "/speedle_ps/"
DefaultEtcdStoreEndpoint = "localhost:2379"
DefaultEtcdStoreKeyPrefix = "/speedle_ps/"
DefaultEtcdStoreIsEmbedded = false
)
type Etcd3StoreBuilder struct{}
func (esb Etcd3StoreBuilder) NewStore(config map[string]interface{}) (pms.PolicyStoreManager, error) {
keyPrefix, ok := config[EtcdKeyPrefixKey].(string)
if !ok {
keyPrefix = DefaultKeyPrefix
}
var isEmbeddedEtcd = false
if val, ok := config[IsEmbeddedEtcdKey]; ok {
var err error
isEmbeddedEtcd, err = convertValueToBool(val, IsEmbeddedEtcdKey)
if err != nil {
return nil, err
}
}
store := Store{}
var etcd3ClientConf clientv3.Config
if isEmbeddedEtcd {
etcdEndpoint := "localhost:2379"
embeddedEtcdDataDir, _ := config[EmbeddedEtcdDataDirKey].(string)
fmt.Printf("new embedded Etcd store: embeddedEtcdDataDir = %q, etcdEndpoint = %q, keyPrefix = %q\n", embeddedEtcdDataDir, etcdEndpoint, keyPrefix)
embeddedInst, embeddedDir, err := StartEmbeddedEtcd(embeddedEtcdDataDir)
if err != nil {
return nil, err
}
store.embeddedDir = embeddedDir
store.embeddedInst = embeddedInst
etcd3ClientConf.Endpoints = []string{etcdEndpoint}
} else {
etcdEndpoint, ok := config[EtcdEndpointKey].(string)
if !ok {
return nil, errors.New(errors.ConfigError, "configure item EtcdEndpoint is not found")
}
log.Debugf("new Etcd store: etcdEndpoint = %q, keyPrefix = %q\n", etcdEndpoint, keyPrefix)
etcd3ClientConf.Endpoints = []string{etcdEndpoint}
if strings.HasPrefix(etcdEndpoint, "https") {
tlsInfo := transport.TLSInfo{}
if certFile, ok := config[EtcdTLSClientCertFileKey].(string); ok {
tlsInfo.CertFile = certFile
}
if keyFile, ok := config[EtcdTLSClientKeyFileKey].(string); ok {
tlsInfo.KeyFile = keyFile
}
if trustedCAFile, ok := config[EtcdTLSClientTrustedCAFileKey].(string); ok {
tlsInfo.TrustedCAFile = trustedCAFile
}
if cRLFile, ok := config[EtcdTLSCRLFileKey].(string); ok {
tlsInfo.CRLFile = cRLFile
}
if val, ok := config[EtcdTLSInsecureSkipVerifyKey]; ok {
var err error
tlsInfo.InsecureSkipVerify, err = convertValueToBool(val, EtcdTLSInsecureSkipVerifyKey)
if err != nil {
return nil, err
}
}
if serverName, ok := config[EtcdTLSServerNameKey].(string); ok {
tlsInfo.ServerName = serverName
}
if allowedCN, ok := config[EtcdTLSAllowedCNKey].(string); ok {
tlsInfo.AllowedCN = allowedCN
}
tlsConfig, err := tlsInfo.ClientConfig()
if err != nil {
return nil, err
}
fmt.Printf("tlsInfo: %v\n", tlsInfo)
etcd3ClientConf.TLS = tlsConfig
}
}
cli, err := clientv3.New(etcd3ClientConf)
if err != nil {
return nil, errors.Wrap(err, errors.StoreError, "failed to connect to etcd server")
}
store.client = cli
store.Config = &etcd3ClientConf
store.KeyPrefix = keyPrefix
fmt.Println("Etcd store...")
return &store, nil
}
func convertValueToBool(val interface{}, keyName string) (bool, error) {
switch x := val.(type) {
case bool:
boolValule := val.(bool)
return boolValule, nil
case string:
boolValule, err := strconv.ParseBool(val.(string))
if err != nil {
return false, errors.Wrapf(err, errors.ConfigError, "failed to convert configure %q", keyName)
}
return boolValule, nil
default:
return false, errors.Errorf(errors.ConfigError, "unsupported data type %T for configuration item %q", x, keyName)
}
}
func (esb Etcd3StoreBuilder) GetStoreParams() map[string]string {
return map[string]string{
IsEmbeddedEtcdFlagName: IsEmbeddedEtcdKey,
EmbeddedEtcdDataDirFlagName: EmbeddedEtcdDataDirKey,
EtcdEndpointFlagName: EtcdEndpointKey,
EtcdKeyPrefixFlagName: EtcdKeyPrefixKey,
EtcdTLSClientCertFileFlagName: EtcdTLSClientCertFileKey,
EtcdTLSClientKeyFileFlagName: EtcdTLSClientKeyFileKey,
EtcdTLSClientTrustedCAFileFlagName: EtcdTLSClientTrustedCAFileKey,
EtcdTLSAllowedCNFlagName: EtcdTLSAllowedCNKey,
EtcdTLSServerNameFlagName: EtcdTLSServerNameKey,
EtcdTLSCRLFileFlagName: EtcdTLSCRLFileKey,
EtcdTLSInsecureSkipVerifyFlagName: EtcdTLSInsecureSkipVerifyKey,
}
}
func init() {
pflag.String(EtcdEndpointFlagName, DefaultEtcdStoreEndpoint, "Store config: endpoint of etcd store.")
pflag.String(EtcdKeyPrefixFlagName, DefaultEtcdStoreKeyPrefix, "Store config: key prefix to store speedle policy data in etcd store.")
pflag.Bool(IsEmbeddedEtcdFlagName, DefaultEtcdStoreIsEmbedded, "Store config: is embedded etcd store or not.")
pflag.String(EmbeddedEtcdDataDirFlagName, "", "Store config: data dir for embedded etcd store.")
pflag.String(EtcdTLSClientCertFileFlagName, "", "Store config: etcd x509 client cert.")
pflag.String(EtcdTLSClientKeyFileFlagName, "", "Store config: etcd x509 client key.")
pflag.String(EtcdTLSClientTrustedCAFileFlagName, "", "Store config: etcd x509 client CA cert.")
pflag.String(EtcdTLSAllowedCNFlagName, "", "Store config: etcd x509 allowed CN.")
pflag.String(EtcdTLSServerNameFlagName, "", "Store config: etcd x509 server name.")
pflag.String(EtcdTLSCRLFileFlagName, "", "Store config: etcd x509 CRL file.")
pflag.Bool(EtcdTLSInsecureSkipVerifyFlagName, false, "Store config: etcd x509 insecure skip verify.")
store.Register(StoreType, Etcd3StoreBuilder{})
}