mirror of
https://github.com/minio/mc.git
synced 2025-11-12 01:02:26 +03:00
112 lines
3.0 KiB
Go
112 lines
3.0 KiB
Go
/*
|
|
* Minio Client, (C) 2015 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 command
|
|
|
|
import (
|
|
"os"
|
|
"syscall"
|
|
|
|
"github.com/minio/cli"
|
|
"github.com/minio/minio/pkg/probe"
|
|
)
|
|
|
|
var (
|
|
pipeFlags = []cli.Flag{
|
|
cli.BoolFlag{
|
|
Name: "help, h",
|
|
Usage: "Help of pipe.",
|
|
},
|
|
}
|
|
)
|
|
|
|
// Display contents of a file.
|
|
var pipeCmd = cli.Command{
|
|
Name: "pipe",
|
|
Usage: "Write contents of stdin to one target. When no target is specified, it writes to stdout.",
|
|
Action: mainPipe,
|
|
Flags: append(pipeFlags, globalFlags...),
|
|
CustomHelpTemplate: `NAME:
|
|
mc {{.Name}} - {{.Usage}}
|
|
|
|
USAGE:
|
|
mc {{.Name}} [FLAGS] [TARGET]
|
|
|
|
FLAGS:
|
|
{{range .Flags}}{{.}}
|
|
{{end}}
|
|
EXAMPLES:
|
|
1. Write contents of stdin to a file on local filesystem.
|
|
$ mc {{.Name}} /tmp/hello-world.go
|
|
|
|
2. Write contents of stdin to an object on Amazon S3 cloud storage.
|
|
$ mc {{.Name}} s3/personalbuck/meeting-notes.txt
|
|
|
|
3. Copy an ISO image to an object on Amazon S3 cloud storage.
|
|
$ cat debian-8.2.iso | mc {{.Name}} s3/ferenginar/gnuos.iso
|
|
|
|
4. Stream MySQL database dump to Amazon S3 directly.
|
|
$ mysqldump -u root -p ******* accountsdb | mc {{.Name}} s3/ferenginar/backups/accountsdb-oct-9-2015.sql
|
|
`,
|
|
}
|
|
|
|
func pipe(targetURL string) *probe.Error {
|
|
if targetURL == "" {
|
|
// When no target is specified, pipe cat's stdin to stdout.
|
|
return catOut(os.Stdin).Trace()
|
|
}
|
|
|
|
// Stream from stdin to multiple objects until EOF.
|
|
// Ignore size, since os.Stat() would not return proper size all the time
|
|
// for local filesystem for example /proc files.
|
|
_, err := putTargetStream(targetURL, os.Stdin, -1)
|
|
// TODO: See if this check is necessary.
|
|
switch e := err.ToGoError().(type) {
|
|
case *os.PathError:
|
|
if e.Err == syscall.EPIPE {
|
|
// stdin closed by the user. Gracefully exit.
|
|
return nil
|
|
}
|
|
}
|
|
return err.Trace(targetURL)
|
|
}
|
|
|
|
// check pipe input arguments.
|
|
func checkPipeSyntax(ctx *cli.Context) {
|
|
if len(ctx.Args()) > 1 {
|
|
cli.ShowCommandHelpAndExit(ctx, "pipe", 1) // last argument is exit code.
|
|
}
|
|
}
|
|
|
|
// mainPipe is the main entry point for pipe command.
|
|
func mainPipe(ctx *cli.Context) {
|
|
// Set global flags from context.
|
|
setGlobalsFromContext(ctx)
|
|
|
|
// validate pipe input arguments.
|
|
checkPipeSyntax(ctx)
|
|
|
|
if len(ctx.Args()) == 0 {
|
|
err := pipe("")
|
|
fatalIf(err.Trace("stdout"), "Unable to write to one or more targets.")
|
|
} else {
|
|
// extract URLs.
|
|
URLs := ctx.Args()
|
|
err := pipe(URLs[0])
|
|
fatalIf(err.Trace(URLs[0]), "Unable to write to one or more targets.")
|
|
}
|
|
}
|