You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
96 lines
2.8 KiB
96 lines
2.8 KiB
/*
|
|
* MinIO Cloud Storage, (C) 2019 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 etcd
|
|
|
|
import (
|
|
"crypto/tls"
|
|
"crypto/x509"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/coreos/etcd/clientv3"
|
|
"github.com/minio/minio/cmd/config"
|
|
"github.com/minio/minio/pkg/env"
|
|
xnet "github.com/minio/minio/pkg/net"
|
|
)
|
|
|
|
const (
|
|
// Default values used while communicating with etcd.
|
|
defaultDialTimeout = 30 * time.Second
|
|
defaultDialKeepAlive = 30 * time.Second
|
|
)
|
|
|
|
// etcd environment values
|
|
const (
|
|
EnvEtcdEndpoints = "MINIO_ETCD_ENDPOINTS"
|
|
EnvEtcdClientCert = "MINIO_ETCD_CLIENT_CERT"
|
|
EnvEtcdClientCertKey = "MINIO_ETCD_CLIENT_CERT_KEY"
|
|
)
|
|
|
|
// New - Initialize new etcd client
|
|
func New(rootCAs *x509.CertPool) (*clientv3.Client, error) {
|
|
envEndpoints := env.Get(EnvEtcdEndpoints, "")
|
|
if envEndpoints == "" {
|
|
// etcd is not configured, nothing to do.
|
|
return nil, nil
|
|
}
|
|
|
|
etcdEndpoints := strings.Split(envEndpoints, config.ValueSeparator)
|
|
|
|
var etcdSecure bool
|
|
for _, endpoint := range etcdEndpoints {
|
|
u, err := xnet.ParseURL(endpoint)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
// If one of the endpoint is https, we will use https directly.
|
|
etcdSecure = etcdSecure || u.Scheme == "https"
|
|
}
|
|
|
|
var err error
|
|
var etcdClnt *clientv3.Client
|
|
if etcdSecure {
|
|
// This is only to support client side certificate authentication
|
|
// https://coreos.com/etcd/docs/latest/op-guide/security.html
|
|
etcdClientCertFile, ok1 := env.Lookup(EnvEtcdClientCert)
|
|
etcdClientCertKey, ok2 := env.Lookup(EnvEtcdClientCertKey)
|
|
var getClientCertificate func(*tls.CertificateRequestInfo) (*tls.Certificate, error)
|
|
if ok1 && ok2 {
|
|
getClientCertificate = func(unused *tls.CertificateRequestInfo) (*tls.Certificate, error) {
|
|
cert, terr := tls.LoadX509KeyPair(etcdClientCertFile, etcdClientCertKey)
|
|
return &cert, terr
|
|
}
|
|
}
|
|
|
|
etcdClnt, err = clientv3.New(clientv3.Config{
|
|
Endpoints: etcdEndpoints,
|
|
DialTimeout: defaultDialTimeout,
|
|
DialKeepAliveTime: defaultDialKeepAlive,
|
|
TLS: &tls.Config{
|
|
RootCAs: rootCAs,
|
|
GetClientCertificate: getClientCertificate,
|
|
},
|
|
})
|
|
} else {
|
|
etcdClnt, err = clientv3.New(clientv3.Config{
|
|
Endpoints: etcdEndpoints,
|
|
DialTimeout: defaultDialTimeout,
|
|
DialKeepAliveTime: defaultDialKeepAlive,
|
|
})
|
|
}
|
|
return etcdClnt, err
|
|
}
|
|
|