minio/cmd/gateway/nas/gateway-nas.go
2022-10-14 03:08:40 -07:00

117 lines
3.7 KiB
Go

/*
* MinIO Object Storage (c) 2021 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 nas
import (
"context"
"github.com/minio/cli"
"github.com/minio/madmin-go"
minio "github.com/minio/minio/cmd"
)
func init() {
const nasGatewayTemplate = `NAME:
{{.HelpName}} - {{.Usage}}
USAGE:
{{.HelpName}} {{if .VisibleFlags}}[FLAGS]{{end}} PATH
{{if .VisibleFlags}}
FLAGS:
{{range .VisibleFlags}}{{.}}
{{end}}{{end}}
PATH:
path to NAS mount point
EXAMPLES:
1. Start minio gateway server for NAS backend
{{.Prompt}} {{.EnvVarSetCommand}} MINIO_ROOT_USER{{.AssignmentOperator}}accesskey
{{.Prompt}} {{.EnvVarSetCommand}} MINIO_ROOT_PASSWORD{{.AssignmentOperator}}secretkey
{{.Prompt}} {{.HelpName}} /shared/nasvol
2. Start minio gateway server for NAS with edge caching enabled
{{.Prompt}} {{.EnvVarSetCommand}} MINIO_ROOT_USER{{.AssignmentOperator}}accesskey
{{.Prompt}} {{.EnvVarSetCommand}} MINIO_ROOT_PASSWORD{{.AssignmentOperator}}secretkey
{{.Prompt}} {{.EnvVarSetCommand}} MINIO_CACHE_DRIVES{{.AssignmentOperator}}"/mnt/drive1,/mnt/drive2,/mnt/drive3,/mnt/drive4"
{{.Prompt}} {{.EnvVarSetCommand}} MINIO_CACHE_EXCLUDE{{.AssignmentOperator}}"bucket1/*,*.png"
{{.Prompt}} {{.EnvVarSetCommand}} MINIO_CACHE_QUOTA{{.AssignmentOperator}}90
{{.Prompt}} {{.EnvVarSetCommand}} MINIO_CACHE_AFTER{{.AssignmentOperator}}3
{{.Prompt}} {{.EnvVarSetCommand}} MINIO_CACHE_WATERMARK_LOW{{.AssignmentOperator}}75
{{.Prompt}} {{.EnvVarSetCommand}} MINIO_CACHE_WATERMARK_HIGH{{.AssignmentOperator}}85
{{.Prompt}} {{.HelpName}} /shared/nasvol
`
minio.RegisterGatewayCommand(cli.Command{
Name: minio.NASBackendGateway,
Usage: "Network-attached storage (NAS)",
Action: nasGatewayMain,
CustomHelpTemplate: nasGatewayTemplate,
HideHelpCommand: true,
})
}
// Handler for 'minio gateway nas' command line.
func nasGatewayMain(ctx *cli.Context) {
// Validate gateway arguments.
if !ctx.Args().Present() || ctx.Args().First() == "help" {
cli.ShowCommandHelpAndExit(ctx, minio.NASBackendGateway, 1)
}
minio.StartGateway(ctx, &NAS{ctx.Args().First()})
}
// NAS implements Gateway.
type NAS struct {
path string
}
// Name implements Gateway interface.
func (g *NAS) Name() string {
return minio.NASBackendGateway
}
// NewGatewayLayer returns nas gatewaylayer.
func (g *NAS) NewGatewayLayer(creds madmin.Credentials) (minio.ObjectLayer, error) {
var err error
newObject, err := minio.NewFSObjectLayer(minio.GlobalContext, g.path)
if err != nil {
return nil, err
}
return &nasObjects{newObject}, nil
}
// IsListenSupported returns whether listen bucket notification is applicable for this gateway.
func (n *nasObjects) IsListenSupported() bool {
return false
}
func (n *nasObjects) StorageInfo(ctx context.Context) (si minio.StorageInfo, _ []error) {
si, errs := n.ObjectLayer.StorageInfo(ctx)
si.Backend.GatewayOnline = si.Backend.Type == madmin.FS
si.Backend.Type = madmin.Gateway
return si, errs
}
// nasObjects implements gateway for MinIO and S3 compatible object storage servers.
type nasObjects struct {
minio.ObjectLayer
}
func (n *nasObjects) IsTaggingSupported() bool {
return true
}