mirror of
https://github.com/minio/minio.git
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133 lines
4.0 KiB
Go
133 lines
4.0 KiB
Go
/*
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* MinIO Cloud Storage, (C) 2018 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 nas
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import (
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"context"
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"github.com/minio/cli"
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minio "github.com/minio/minio/cmd"
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"github.com/minio/minio/pkg/auth"
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)
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const (
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nasBackend = "nas"
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)
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func init() {
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const nasGatewayTemplate = `NAME:
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{{.HelpName}} - {{.Usage}}
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USAGE:
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{{.HelpName}} {{if .VisibleFlags}}[FLAGS]{{end}} PATH
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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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PATH:
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path to NAS mount point
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EXAMPLES:
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1. Start minio gateway server for NAS 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}} /shared/nasvol
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2. Start minio gateway server for NAS 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}} /shared/nasvol
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`
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minio.RegisterGatewayCommand(cli.Command{
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Name: nasBackend,
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Usage: "Network-attached storage (NAS)",
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Action: nasGatewayMain,
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CustomHelpTemplate: nasGatewayTemplate,
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HideHelpCommand: true,
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})
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}
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// Handler for 'minio gateway nas' command line.
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func nasGatewayMain(ctx *cli.Context) {
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// Validate gateway arguments.
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if !ctx.Args().Present() || ctx.Args().First() == "help" {
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cli.ShowCommandHelpAndExit(ctx, nasBackend, 1)
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}
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minio.StartGateway(ctx, &NAS{ctx.Args().First()})
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}
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// NAS implements Gateway.
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type NAS struct {
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path string
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}
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// Name implements Gateway interface.
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func (g *NAS) Name() string {
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return nasBackend
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}
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// NewGatewayLayer returns nas gatewaylayer.
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func (g *NAS) NewGatewayLayer(creds auth.Credentials) (minio.ObjectLayer, error) {
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var err error
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newObject, err := minio.NewFSObjectLayer(g.path)
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if err != nil {
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return nil, err
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}
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return &nasObjects{newObject}, nil
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}
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// Production - nas gateway is production ready.
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func (g *NAS) Production() bool {
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return true
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}
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// IsListenBucketSupported returns whether listen bucket notification is applicable for this gateway.
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func (n *nasObjects) IsListenBucketSupported() bool {
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return false
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}
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func (n *nasObjects) StorageInfo(ctx context.Context, _ bool) (si minio.StorageInfo, _ []error) {
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si, errs := n.ObjectLayer.StorageInfo(ctx, false)
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si.Backend.GatewayOnline = si.Backend.Type == minio.BackendFS
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si.Backend.Type = minio.BackendGateway
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return si, errs
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}
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// nasObjects implements gateway for MinIO and S3 compatible object storage servers.
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type nasObjects struct {
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minio.ObjectLayer
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}
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// IsReady returns whether the layer is ready to take requests.
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func (n *nasObjects) IsReady(ctx context.Context) bool {
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si, _ := n.StorageInfo(ctx, false)
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return si.Backend.GatewayOnline
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}
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func (n *nasObjects) IsTaggingSupported() bool {
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return true
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}
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