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Use random host from among multiple hosts to create requests

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Also use hosts passed to Minio startup command to populate IP
addresses if MINIO_PUBLIC_IPS is not set.
This commit is contained in:
Nitish Tiwari
2018-05-16 06:50:22 +05:30
committed by kannappanr
parent 6ce7265c8c
commit 3dc13323e5
15 changed files with 164 additions and 119 deletions
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37
cmd/object-api-utils.go
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@@ -20,14 +20,13 @@ import (
"context"
"encoding/hex"
"fmt"
"net"
"math/rand"
"path"
"runtime"
"strconv"
"strings"
"time"
"unicode/utf8"
miniogo "github.com/minio/minio-go"
"github.com/minio/minio/cmd/logger"
"github.com/minio/minio/pkg/dns"
"github.com/skyrings/skyring-common/tools/uuid"
@@ -281,31 +280,6 @@ func isMinioReservedBucket(bucketName string) bool {
return bucketName == minioReservedBucket
}
// Returns a minio-go Client configured to access remote host described by destDNSRecord
// Applicable only in a federated deployment
func getRemoteInstanceClient(destDNSRecord dns.SrvRecord) (*miniogo.Core, error) {
// In a federated deployment, all the instances share config files and hence expected to have same
// credentials. So, access current instances creds and use it to create client for remote instance
client, err := miniogo.NewCore(net.JoinHostPort(destDNSRecord.Host, strconv.Itoa(destDNSRecord.Port)), globalServerConfig.Credential.AccessKey, globalServerConfig.Credential.SecretKey, globalIsSSL)
if err != nil {
return nil, err
}
return client, nil
}
// Checks if a remote putobject call is needed for CopyObject operation
// 1. If source and destination bucket names are same, it means no call needed to etcd to get destination info
// 2. If destination bucket doesn't exist locally, only then a etcd call is needed
func isRemoteCallRequired(ctx context.Context, src, dst string, objAPI ObjectLayer) bool {
if src == dst {
return false
}
if _, err := objAPI.GetBucketInfo(ctx, dst); err == toObjectErr(errVolumeNotFound, dst) {
return true
}
return false
}
// returns a slice of hosts by reading a slice of DNS records
func getHostsSlice(records []dns.SrvRecord) []string {
var hosts []string
@@ -315,6 +289,13 @@ func getHostsSlice(records []dns.SrvRecord) []string {
return hosts
}
// returns a random host (and corresponding port) from a slice of DNS records
func getRandomHostPort(records []dns.SrvRecord) (string, int) {
rand.Seed(time.Now().Unix())
srvRecord := records[rand.Intn(len(records))]
return srvRecord.Host, srvRecord.Port
}
// byBucketName is a collection satisfying sort.Interface.
type byBucketName []BucketInfo