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739 lines
23 KiB
739 lines
23 KiB
/*
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* Minio Cloud Storage, (C) 2019 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package hdfs
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import (
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"context"
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"errors"
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"fmt"
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"io"
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"net"
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"net/http"
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"os"
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"os/user"
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"path"
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"sort"
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"strings"
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"syscall"
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"time"
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"github.com/minio/cli"
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krb "github.com/minio/gokrb5/v7/client"
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"github.com/minio/gokrb5/v7/config"
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"github.com/minio/gokrb5/v7/credentials"
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"github.com/minio/hdfs/v3"
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"github.com/minio/hdfs/v3/hadoopconf"
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"github.com/minio/minio-go/v6/pkg/s3utils"
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minio "github.com/minio/minio/cmd"
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"github.com/minio/minio/cmd/logger"
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"github.com/minio/minio/pkg/auth"
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"github.com/minio/minio/pkg/env"
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xnet "github.com/minio/minio/pkg/net"
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)
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const (
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hdfsBackend = "hdfs"
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hdfsSeparator = minio.SlashSeparator
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)
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func init() {
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const hdfsGatewayTemplate = `NAME:
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{{.HelpName}} - {{.Usage}}
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USAGE:
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{{.HelpName}} {{if .VisibleFlags}}[FLAGS]{{end}} HDFS-NAMENODE [HDFS-NAMENODE...]
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{{if .VisibleFlags}}
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FLAGS:
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{{range .VisibleFlags}}{{.}}
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{{end}}{{end}}
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HDFS-NAMENODE:
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HDFS namenode URI
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EXAMPLES:
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1. Start minio gateway server for HDFS backend
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{{.Prompt}} {{.EnvVarSetCommand}} MINIO_ACCESS_KEY{{.AssignmentOperator}}accesskey
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{{.Prompt}} {{.EnvVarSetCommand}} MINIO_SECRET_KEY{{.AssignmentOperator}}secretkey
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{{.Prompt}} {{.HelpName}} hdfs://namenode:8200
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2. Start minio gateway server for HDFS with edge caching enabled
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{{.Prompt}} {{.EnvVarSetCommand}} MINIO_ACCESS_KEY{{.AssignmentOperator}}accesskey
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{{.Prompt}} {{.EnvVarSetCommand}} MINIO_SECRET_KEY{{.AssignmentOperator}}secretkey
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{{.Prompt}} {{.EnvVarSetCommand}} MINIO_CACHE_DRIVES{{.AssignmentOperator}}"/mnt/drive1,/mnt/drive2,/mnt/drive3,/mnt/drive4"
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{{.Prompt}} {{.EnvVarSetCommand}} MINIO_CACHE_EXCLUDE{{.AssignmentOperator}}"bucket1/*,*.png"
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{{.Prompt}} {{.EnvVarSetCommand}} MINIO_CACHE_QUOTA{{.AssignmentOperator}}90
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{{.Prompt}} {{.EnvVarSetCommand}} MINIO_CACHE_AFTER{{.AssignmentOperator}}3
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{{.Prompt}} {{.EnvVarSetCommand}} MINIO_CACHE_WATERMARK_LOW{{.AssignmentOperator}}75
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{{.Prompt}} {{.EnvVarSetCommand}} MINIO_CACHE_WATERMARK_HIGH{{.AssignmentOperator}}85
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{{.Prompt}} {{.HelpName}} hdfs://namenode:8200
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`
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minio.RegisterGatewayCommand(cli.Command{
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Name: hdfsBackend,
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Usage: "Hadoop Distributed File System (HDFS)",
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Action: hdfsGatewayMain,
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CustomHelpTemplate: hdfsGatewayTemplate,
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HideHelpCommand: true,
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})
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}
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// Handler for 'minio gateway hdfs' command line.
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func hdfsGatewayMain(ctx *cli.Context) {
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// Validate gateway arguments.
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if ctx.Args().First() == "help" {
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cli.ShowCommandHelpAndExit(ctx, hdfsBackend, 1)
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}
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minio.StartGateway(ctx, &HDFS{args: ctx.Args()})
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}
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// HDFS implements Gateway.
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type HDFS struct {
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args []string
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}
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// Name implements Gateway interface.
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func (g *HDFS) Name() string {
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return hdfsBackend
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}
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func getKerberosClient() (*krb.Client, error) {
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cfg, err := config.Load(env.Get("KRB5_CONFIG", "/etc/krb5.conf"))
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if err != nil {
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return nil, err
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}
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u, err := user.Current()
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if err != nil {
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return nil, err
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}
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// Determine the ccache location from the environment, falling back to the default location.
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ccachePath := env.Get("KRB5CCNAME", fmt.Sprintf("/tmp/krb5cc_%s", u.Uid))
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if strings.Contains(ccachePath, ":") {
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if strings.HasPrefix(ccachePath, "FILE:") {
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ccachePath = strings.TrimPrefix(ccachePath, "FILE:")
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} else {
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return nil, fmt.Errorf("unable to use kerberos ccache: %s", ccachePath)
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}
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}
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ccache, err := credentials.LoadCCache(ccachePath)
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if err != nil {
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return nil, err
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}
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return krb.NewClientFromCCache(ccache, cfg)
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}
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// NewGatewayLayer returns hdfs gatewaylayer.
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func (g *HDFS) NewGatewayLayer(creds auth.Credentials) (minio.ObjectLayer, error) {
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dialFunc := (&net.Dialer{
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Timeout: 30 * time.Second,
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KeepAlive: 30 * time.Second,
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DualStack: true,
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}).DialContext
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hconfig, err := hadoopconf.LoadFromEnvironment()
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if err != nil {
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return nil, err
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}
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opts := hdfs.ClientOptionsFromConf(hconfig)
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opts.NamenodeDialFunc = dialFunc
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opts.DatanodeDialFunc = dialFunc
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// Not addresses found, load it from command line.
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if len(opts.Addresses) == 0 {
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var addresses []string
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for _, s := range g.args {
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u, err := xnet.ParseURL(s)
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if err != nil {
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return nil, err
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}
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addresses = append(addresses, u.Host)
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}
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opts.Addresses = addresses
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}
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u, err := user.Current()
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if err != nil {
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return nil, fmt.Errorf("Unable to lookup local user: %s", err)
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}
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if opts.KerberosClient != nil {
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opts.KerberosClient, err = getKerberosClient()
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if err != nil {
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return nil, fmt.Errorf("Unable to initialize kerberos client: %s", err)
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}
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} else {
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opts.User = env.Get("HADOOP_USER_NAME", u.Username)
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}
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clnt, err := hdfs.NewClient(opts)
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if err != nil {
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return nil, err
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}
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if err = clnt.MkdirAll(minio.PathJoin(hdfsSeparator, minioMetaTmpBucket), os.FileMode(0755)); err != nil {
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return nil, err
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}
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return &hdfsObjects{clnt: clnt, listPool: minio.NewTreeWalkPool(time.Minute * 30)}, nil
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}
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// Production - hdfs gateway is production ready.
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func (g *HDFS) Production() bool {
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return true
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}
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func (n *hdfsObjects) Shutdown(ctx context.Context) error {
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return n.clnt.Close()
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}
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func (n *hdfsObjects) StorageInfo(ctx context.Context, _ bool) minio.StorageInfo {
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fsInfo, err := n.clnt.StatFs()
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if err != nil {
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return minio.StorageInfo{}
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}
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sinfo := minio.StorageInfo{}
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sinfo.Used = []uint64{fsInfo.Used}
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sinfo.Backend.Type = minio.BackendGateway
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sinfo.Backend.GatewayOnline = true
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return sinfo
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}
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// hdfsObjects implements gateway for Minio and S3 compatible object storage servers.
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type hdfsObjects struct {
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minio.GatewayUnsupported
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clnt *hdfs.Client
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listPool *minio.TreeWalkPool
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}
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func hdfsToObjectErr(ctx context.Context, err error, params ...string) error {
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if err == nil {
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return nil
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}
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bucket := ""
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object := ""
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uploadID := ""
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switch len(params) {
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case 3:
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uploadID = params[2]
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fallthrough
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case 2:
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object = params[1]
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fallthrough
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case 1:
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bucket = params[0]
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}
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switch {
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case os.IsNotExist(err):
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if uploadID != "" {
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return minio.InvalidUploadID{
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UploadID: uploadID,
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}
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}
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if object != "" {
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return minio.ObjectNotFound{Bucket: bucket, Object: object}
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}
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return minio.BucketNotFound{Bucket: bucket}
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case os.IsExist(err):
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if object != "" {
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return minio.PrefixAccessDenied{Bucket: bucket, Object: object}
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}
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return minio.BucketAlreadyOwnedByYou{Bucket: bucket}
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case errors.Is(err, syscall.ENOTEMPTY):
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if object != "" {
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return minio.PrefixAccessDenied{Bucket: bucket, Object: object}
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}
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return minio.BucketNotEmpty{Bucket: bucket}
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default:
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logger.LogIf(ctx, err)
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return err
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}
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}
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// hdfsIsValidBucketName verifies whether a bucket name is valid.
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func hdfsIsValidBucketName(bucket string) bool {
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return s3utils.CheckValidBucketNameStrict(bucket) == nil
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}
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func (n *hdfsObjects) DeleteBucket(ctx context.Context, bucket string) error {
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if !hdfsIsValidBucketName(bucket) {
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return minio.BucketNameInvalid{Bucket: bucket}
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}
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return hdfsToObjectErr(ctx, n.clnt.Remove(minio.PathJoin(hdfsSeparator, bucket)), bucket)
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}
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func (n *hdfsObjects) MakeBucketWithLocation(ctx context.Context, bucket, location string) error {
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if !hdfsIsValidBucketName(bucket) {
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return minio.BucketNameInvalid{Bucket: bucket}
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}
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return hdfsToObjectErr(ctx, n.clnt.Mkdir(minio.PathJoin(hdfsSeparator, bucket), os.FileMode(0755)), bucket)
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}
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func (n *hdfsObjects) GetBucketInfo(ctx context.Context, bucket string) (bi minio.BucketInfo, err error) {
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fi, err := n.clnt.Stat(minio.PathJoin(hdfsSeparator, bucket))
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if err != nil {
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return bi, hdfsToObjectErr(ctx, err, bucket)
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}
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// As hdfs.Stat() doesn't carry anything other than ModTime(), use ModTime() as CreatedTime.
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return minio.BucketInfo{
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Name: bucket,
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Created: fi.ModTime(),
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}, nil
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}
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func (n *hdfsObjects) ListBuckets(ctx context.Context) (buckets []minio.BucketInfo, err error) {
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entries, err := n.clnt.ReadDir(hdfsSeparator)
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if err != nil {
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logger.LogIf(ctx, err)
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return nil, hdfsToObjectErr(ctx, err)
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}
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for _, entry := range entries {
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// Ignore all reserved bucket names and invalid bucket names.
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if isReservedOrInvalidBucket(entry.Name(), false) {
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continue
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}
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buckets = append(buckets, minio.BucketInfo{
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Name: entry.Name(),
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// As hdfs.Stat() doesnt carry CreatedTime, use ModTime() as CreatedTime.
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Created: entry.ModTime(),
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})
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}
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// Sort bucket infos by bucket name.
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sort.Sort(byBucketName(buckets))
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return buckets, nil
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}
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func (n *hdfsObjects) listDirFactory() minio.ListDirFunc {
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// listDir - lists all the entries at a given prefix and given entry in the prefix.
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listDir := func(bucket, prefixDir, prefixEntry string) (entries []string) {
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f, err := n.clnt.Open(minio.PathJoin(hdfsSeparator, bucket, prefixDir))
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if err != nil {
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if os.IsNotExist(err) {
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err = nil
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}
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logger.LogIf(context.Background(), err)
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return
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}
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defer f.Close()
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fis, err := f.Readdir(0)
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if err != nil {
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logger.LogIf(context.Background(), err)
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return
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}
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for _, fi := range fis {
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if fi.IsDir() {
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entries = append(entries, fi.Name()+hdfsSeparator)
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} else {
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entries = append(entries, fi.Name())
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}
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}
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return minio.FilterMatchingPrefix(entries, prefixEntry)
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}
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// Return list factory instance.
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return listDir
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}
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// ListObjects lists all blobs in HDFS bucket filtered by prefix.
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func (n *hdfsObjects) ListObjects(ctx context.Context, bucket, prefix, marker, delimiter string, maxKeys int) (loi minio.ListObjectsInfo, err error) {
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if _, err := n.clnt.Stat(minio.PathJoin(hdfsSeparator, bucket)); err != nil {
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return loi, hdfsToObjectErr(ctx, err, bucket)
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}
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getObjectInfo := func(ctx context.Context, bucket, entry string) (minio.ObjectInfo, error) {
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fi, err := n.clnt.Stat(minio.PathJoin(hdfsSeparator, bucket, entry))
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if err != nil {
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return minio.ObjectInfo{}, hdfsToObjectErr(ctx, err, bucket, entry)
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}
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return minio.ObjectInfo{
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Bucket: bucket,
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Name: entry,
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ModTime: fi.ModTime(),
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Size: fi.Size(),
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IsDir: fi.IsDir(),
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AccTime: fi.(*hdfs.FileInfo).AccessTime(),
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}, nil
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}
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return minio.ListObjects(ctx, n, bucket, prefix, marker, delimiter, maxKeys, n.listPool, n.listDirFactory(), getObjectInfo, getObjectInfo)
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}
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// deleteObject deletes a file path if its empty. If it's successfully deleted,
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// it will recursively move up the tree, deleting empty parent directories
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// until it finds one with files in it. Returns nil for a non-empty directory.
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func (n *hdfsObjects) deleteObject(basePath, deletePath string) error {
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if basePath == deletePath {
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return nil
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}
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// Attempt to remove path.
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if err := n.clnt.Remove(deletePath); err != nil {
|
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if errors.Is(err, syscall.ENOTEMPTY) {
|
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// Ignore errors if the directory is not empty. The server relies on
|
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// this functionality, and sometimes uses recursion that should not
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// error on parent directories.
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return nil
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}
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return err
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}
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// Trailing slash is removed when found to ensure
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// slashpath.Dir() to work as intended.
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deletePath = strings.TrimSuffix(deletePath, hdfsSeparator)
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deletePath = path.Dir(deletePath)
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// Delete parent directory. Errors for parent directories shouldn't trickle down.
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n.deleteObject(basePath, deletePath)
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return nil
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}
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// ListObjectsV2 lists all blobs in HDFS bucket filtered by prefix
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func (n *hdfsObjects) ListObjectsV2(ctx context.Context, bucket, prefix, continuationToken, delimiter string, maxKeys int,
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fetchOwner bool, startAfter string) (loi minio.ListObjectsV2Info, err error) {
|
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// fetchOwner is not supported and unused.
|
|
marker := continuationToken
|
|
if marker == "" {
|
|
marker = startAfter
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}
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resultV1, err := n.ListObjects(ctx, bucket, prefix, marker, delimiter, maxKeys)
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if err != nil {
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return loi, err
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}
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return minio.ListObjectsV2Info{
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Objects: resultV1.Objects,
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Prefixes: resultV1.Prefixes,
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ContinuationToken: continuationToken,
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NextContinuationToken: resultV1.NextMarker,
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|
IsTruncated: resultV1.IsTruncated,
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}, nil
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}
|
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func (n *hdfsObjects) DeleteObject(ctx context.Context, bucket, object string) error {
|
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return hdfsToObjectErr(ctx, n.deleteObject(minio.PathJoin(hdfsSeparator, bucket), minio.PathJoin(hdfsSeparator, bucket, object)), bucket, object)
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}
|
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func (n *hdfsObjects) DeleteObjects(ctx context.Context, bucket string, objects []string) ([]error, error) {
|
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errs := make([]error, len(objects))
|
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for idx, object := range objects {
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errs[idx] = n.DeleteObject(ctx, bucket, object)
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}
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return errs, nil
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}
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|
|
func (n *hdfsObjects) GetObjectNInfo(ctx context.Context, bucket, object string, rs *minio.HTTPRangeSpec, h http.Header, lockType minio.LockType, opts minio.ObjectOptions) (gr *minio.GetObjectReader, err error) {
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objInfo, err := n.GetObjectInfo(ctx, bucket, object, opts)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
var startOffset, length int64
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|
startOffset, length, err = rs.GetOffsetLength(objInfo.Size)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
pr, pw := io.Pipe()
|
|
go func() {
|
|
nerr := n.GetObject(ctx, bucket, object, startOffset, length, pw, objInfo.ETag, opts)
|
|
pw.CloseWithError(nerr)
|
|
}()
|
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|
|
// Setup cleanup function to cause the above go-routine to
|
|
// exit in case of partial read
|
|
pipeCloser := func() { pr.Close() }
|
|
return minio.NewGetObjectReaderFromReader(pr, objInfo, opts.CheckCopyPrecondFn, pipeCloser)
|
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|
|
}
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|
|
func (n *hdfsObjects) CopyObject(ctx context.Context, srcBucket, srcObject, dstBucket, dstObject string, srcInfo minio.ObjectInfo, srcOpts, dstOpts minio.ObjectOptions) (minio.ObjectInfo, error) {
|
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cpSrcDstSame := minio.IsStringEqual(minio.PathJoin(hdfsSeparator, srcBucket, srcObject), minio.PathJoin(hdfsSeparator, dstBucket, dstObject))
|
|
if cpSrcDstSame {
|
|
return n.GetObjectInfo(ctx, srcBucket, srcObject, minio.ObjectOptions{})
|
|
}
|
|
|
|
return n.PutObject(ctx, dstBucket, dstObject, srcInfo.PutObjReader, minio.ObjectOptions{
|
|
ServerSideEncryption: dstOpts.ServerSideEncryption,
|
|
UserDefined: srcInfo.UserDefined,
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|
})
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|
}
|
|
|
|
func (n *hdfsObjects) GetObject(ctx context.Context, bucket, key string, startOffset, length int64, writer io.Writer, etag string, opts minio.ObjectOptions) error {
|
|
if _, err := n.clnt.Stat(minio.PathJoin(hdfsSeparator, bucket)); err != nil {
|
|
return hdfsToObjectErr(ctx, err, bucket)
|
|
}
|
|
rd, err := n.clnt.Open(minio.PathJoin(hdfsSeparator, bucket, key))
|
|
if err != nil {
|
|
return hdfsToObjectErr(ctx, err, bucket, key)
|
|
}
|
|
defer rd.Close()
|
|
_, err = io.Copy(writer, io.NewSectionReader(rd, startOffset, length))
|
|
if err == io.ErrClosedPipe {
|
|
// hdfs library doesn't send EOF correctly, so io.Copy attempts
|
|
// to write which returns io.ErrClosedPipe - just ignore
|
|
// this for now.
|
|
err = nil
|
|
}
|
|
return hdfsToObjectErr(ctx, err, bucket, key)
|
|
}
|
|
|
|
func (n *hdfsObjects) isObjectDir(ctx context.Context, bucket, object string) bool {
|
|
f, err := n.clnt.Open(minio.PathJoin(hdfsSeparator, bucket, object))
|
|
if err != nil {
|
|
if os.IsNotExist(err) {
|
|
return false
|
|
}
|
|
logger.LogIf(ctx, err)
|
|
return false
|
|
}
|
|
defer f.Close()
|
|
fis, err := f.Readdir(1)
|
|
if err != nil && err != io.EOF {
|
|
logger.LogIf(ctx, err)
|
|
return false
|
|
}
|
|
// Readdir returns an io.EOF when len(fis) == 0.
|
|
return len(fis) == 0
|
|
}
|
|
|
|
// GetObjectInfo reads object info and replies back ObjectInfo.
|
|
func (n *hdfsObjects) GetObjectInfo(ctx context.Context, bucket, object string, opts minio.ObjectOptions) (objInfo minio.ObjectInfo, err error) {
|
|
_, err = n.clnt.Stat(minio.PathJoin(hdfsSeparator, bucket))
|
|
if err != nil {
|
|
return objInfo, hdfsToObjectErr(ctx, err, bucket)
|
|
}
|
|
if strings.HasSuffix(object, hdfsSeparator) && !n.isObjectDir(ctx, bucket, object) {
|
|
return objInfo, hdfsToObjectErr(ctx, os.ErrNotExist, bucket, object)
|
|
}
|
|
|
|
fi, err := n.clnt.Stat(minio.PathJoin(hdfsSeparator, bucket, object))
|
|
if err != nil {
|
|
return objInfo, hdfsToObjectErr(ctx, err, bucket, object)
|
|
}
|
|
return minio.ObjectInfo{
|
|
Bucket: bucket,
|
|
Name: object,
|
|
ModTime: fi.ModTime(),
|
|
Size: fi.Size(),
|
|
IsDir: fi.IsDir(),
|
|
AccTime: fi.(*hdfs.FileInfo).AccessTime(),
|
|
}, nil
|
|
}
|
|
|
|
func (n *hdfsObjects) PutObject(ctx context.Context, bucket string, object string, r *minio.PutObjReader, opts minio.ObjectOptions) (objInfo minio.ObjectInfo, err error) {
|
|
_, err = n.clnt.Stat(minio.PathJoin(hdfsSeparator, bucket))
|
|
if err != nil {
|
|
return objInfo, hdfsToObjectErr(ctx, err, bucket)
|
|
}
|
|
|
|
name := minio.PathJoin(hdfsSeparator, bucket, object)
|
|
|
|
// If its a directory create a prefix {
|
|
if strings.HasSuffix(object, hdfsSeparator) && r.Size() == 0 {
|
|
if err = n.clnt.MkdirAll(name, os.FileMode(0755)); err != nil {
|
|
n.deleteObject(minio.PathJoin(hdfsSeparator, bucket), name)
|
|
return objInfo, hdfsToObjectErr(ctx, err, bucket, object)
|
|
}
|
|
} else {
|
|
tmpname := minio.PathJoin(hdfsSeparator, minioMetaTmpBucket, minio.MustGetUUID())
|
|
var w *hdfs.FileWriter
|
|
w, err = n.clnt.Create(tmpname)
|
|
if err != nil {
|
|
return objInfo, hdfsToObjectErr(ctx, err, bucket, object)
|
|
}
|
|
defer n.deleteObject(minio.PathJoin(hdfsSeparator, minioMetaTmpBucket), tmpname)
|
|
if _, err = io.Copy(w, r); err != nil {
|
|
w.Close()
|
|
return objInfo, hdfsToObjectErr(ctx, err, bucket, object)
|
|
}
|
|
dir := path.Dir(name)
|
|
if dir != "" {
|
|
if err = n.clnt.MkdirAll(dir, os.FileMode(0755)); err != nil {
|
|
w.Close()
|
|
n.deleteObject(minio.PathJoin(hdfsSeparator, bucket), dir)
|
|
return objInfo, hdfsToObjectErr(ctx, err, bucket, object)
|
|
}
|
|
}
|
|
w.Close()
|
|
if err = n.clnt.Rename(tmpname, name); err != nil {
|
|
return objInfo, hdfsToObjectErr(ctx, err, bucket, object)
|
|
}
|
|
}
|
|
fi, err := n.clnt.Stat(name)
|
|
if err != nil {
|
|
return objInfo, hdfsToObjectErr(ctx, err, bucket, object)
|
|
}
|
|
return minio.ObjectInfo{
|
|
Bucket: bucket,
|
|
Name: object,
|
|
ETag: r.MD5CurrentHexString(),
|
|
ModTime: fi.ModTime(),
|
|
Size: fi.Size(),
|
|
IsDir: fi.IsDir(),
|
|
AccTime: fi.(*hdfs.FileInfo).AccessTime(),
|
|
}, nil
|
|
}
|
|
|
|
func (n *hdfsObjects) NewMultipartUpload(ctx context.Context, bucket string, object string, opts minio.ObjectOptions) (uploadID string, err error) {
|
|
_, err = n.clnt.Stat(minio.PathJoin(hdfsSeparator, bucket))
|
|
if err != nil {
|
|
return uploadID, hdfsToObjectErr(ctx, err, bucket)
|
|
}
|
|
|
|
uploadID = minio.MustGetUUID()
|
|
if err = n.clnt.CreateEmptyFile(minio.PathJoin(hdfsSeparator, minioMetaTmpBucket, uploadID)); err != nil {
|
|
return uploadID, hdfsToObjectErr(ctx, err, bucket)
|
|
}
|
|
|
|
return uploadID, nil
|
|
}
|
|
|
|
func (n *hdfsObjects) ListMultipartUploads(ctx context.Context, bucket string, prefix string, keyMarker string, uploadIDMarker string, delimiter string, maxUploads int) (lmi minio.ListMultipartsInfo, err error) {
|
|
_, err = n.clnt.Stat(minio.PathJoin(hdfsSeparator, bucket))
|
|
if err != nil {
|
|
return lmi, hdfsToObjectErr(ctx, err, bucket)
|
|
}
|
|
|
|
// It's decided not to support List Multipart Uploads, hence returning empty result.
|
|
return lmi, nil
|
|
}
|
|
|
|
func (n *hdfsObjects) checkUploadIDExists(ctx context.Context, bucket, object, uploadID string) (err error) {
|
|
_, err = n.clnt.Stat(minio.PathJoin(hdfsSeparator, minioMetaTmpBucket, uploadID))
|
|
if err != nil {
|
|
return hdfsToObjectErr(ctx, err, bucket, object, uploadID)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (n *hdfsObjects) ListObjectParts(ctx context.Context, bucket, object, uploadID string, partNumberMarker int, maxParts int, opts minio.ObjectOptions) (result minio.ListPartsInfo, err error) {
|
|
_, err = n.clnt.Stat(minio.PathJoin(hdfsSeparator, bucket))
|
|
if err != nil {
|
|
return result, hdfsToObjectErr(ctx, err, bucket)
|
|
}
|
|
|
|
if err = n.checkUploadIDExists(ctx, bucket, object, uploadID); err != nil {
|
|
return result, err
|
|
}
|
|
|
|
// It's decided not to support List parts, hence returning empty result.
|
|
return result, nil
|
|
}
|
|
|
|
func (n *hdfsObjects) CopyObjectPart(ctx context.Context, srcBucket, srcObject, dstBucket, dstObject, uploadID string, partID int,
|
|
startOffset int64, length int64, srcInfo minio.ObjectInfo, srcOpts, dstOpts minio.ObjectOptions) (minio.PartInfo, error) {
|
|
return n.PutObjectPart(ctx, dstBucket, dstObject, uploadID, partID, srcInfo.PutObjReader, dstOpts)
|
|
}
|
|
|
|
func (n *hdfsObjects) PutObjectPart(ctx context.Context, bucket, object, uploadID string, partID int, r *minio.PutObjReader, opts minio.ObjectOptions) (info minio.PartInfo, err error) {
|
|
_, err = n.clnt.Stat(minio.PathJoin(hdfsSeparator, bucket))
|
|
if err != nil {
|
|
return info, hdfsToObjectErr(ctx, err, bucket)
|
|
}
|
|
|
|
var w *hdfs.FileWriter
|
|
w, err = n.clnt.Append(minio.PathJoin(hdfsSeparator, minioMetaTmpBucket, uploadID))
|
|
if err != nil {
|
|
return info, hdfsToObjectErr(ctx, err, bucket, object, uploadID)
|
|
}
|
|
defer w.Close()
|
|
_, err = io.Copy(w, r.Reader)
|
|
if err != nil {
|
|
return info, hdfsToObjectErr(ctx, err, bucket, object, uploadID)
|
|
}
|
|
|
|
info.PartNumber = partID
|
|
info.ETag = r.MD5CurrentHexString()
|
|
info.LastModified = minio.UTCNow()
|
|
info.Size = r.Reader.Size()
|
|
|
|
return info, nil
|
|
}
|
|
|
|
func (n *hdfsObjects) CompleteMultipartUpload(ctx context.Context, bucket, object, uploadID string, parts []minio.CompletePart, opts minio.ObjectOptions) (objInfo minio.ObjectInfo, err error) {
|
|
_, err = n.clnt.Stat(minio.PathJoin(hdfsSeparator, bucket))
|
|
if err != nil {
|
|
return objInfo, hdfsToObjectErr(ctx, err, bucket)
|
|
}
|
|
|
|
if err = n.checkUploadIDExists(ctx, bucket, object, uploadID); err != nil {
|
|
return objInfo, err
|
|
}
|
|
|
|
name := minio.PathJoin(hdfsSeparator, bucket, object)
|
|
dir := path.Dir(name)
|
|
if dir != "" {
|
|
if err = n.clnt.MkdirAll(dir, os.FileMode(0755)); err != nil {
|
|
return objInfo, hdfsToObjectErr(ctx, err, bucket, object)
|
|
}
|
|
}
|
|
|
|
err = n.clnt.Rename(minio.PathJoin(hdfsSeparator, minioMetaTmpBucket, uploadID), name)
|
|
// Object already exists is an error on HDFS
|
|
// remove it and then create it again.
|
|
if os.IsExist(err) {
|
|
if err = n.clnt.Remove(name); err != nil {
|
|
if dir != "" {
|
|
n.deleteObject(minio.PathJoin(hdfsSeparator, bucket), dir)
|
|
}
|
|
return objInfo, hdfsToObjectErr(ctx, err, bucket, object)
|
|
}
|
|
if err = n.clnt.Rename(minio.PathJoin(hdfsSeparator, minioMetaTmpBucket, uploadID), name); err != nil {
|
|
if dir != "" {
|
|
n.deleteObject(minio.PathJoin(hdfsSeparator, bucket), dir)
|
|
}
|
|
return objInfo, hdfsToObjectErr(ctx, err, bucket, object)
|
|
}
|
|
}
|
|
fi, err := n.clnt.Stat(name)
|
|
if err != nil {
|
|
return objInfo, hdfsToObjectErr(ctx, err, bucket, object)
|
|
}
|
|
|
|
// Calculate s3 compatible md5sum for complete multipart.
|
|
s3MD5 := minio.ComputeCompleteMultipartMD5(parts)
|
|
|
|
return minio.ObjectInfo{
|
|
Bucket: bucket,
|
|
Name: object,
|
|
ETag: s3MD5,
|
|
ModTime: fi.ModTime(),
|
|
Size: fi.Size(),
|
|
IsDir: fi.IsDir(),
|
|
AccTime: fi.(*hdfs.FileInfo).AccessTime(),
|
|
}, nil
|
|
}
|
|
|
|
func (n *hdfsObjects) AbortMultipartUpload(ctx context.Context, bucket, object, uploadID string) (err error) {
|
|
_, err = n.clnt.Stat(minio.PathJoin(hdfsSeparator, bucket))
|
|
if err != nil {
|
|
return hdfsToObjectErr(ctx, err, bucket)
|
|
}
|
|
return hdfsToObjectErr(ctx, n.clnt.Remove(minio.PathJoin(hdfsSeparator, minioMetaTmpBucket, uploadID)), bucket, object, uploadID)
|
|
}
|
|
|
|
// IsReady returns whether the layer is ready to take requests.
|
|
func (n *hdfsObjects) IsReady(_ context.Context) bool {
|
|
return true
|
|
}
|
|
|