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87 lines
2.8 KiB
Go
87 lines
2.8 KiB
Go
/*
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* Minio Client, (C) 2015 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 main
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import (
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"os"
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"syscall"
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"github.com/minio/cli"
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"github.com/minio/minio-xl/pkg/probe"
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)
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// Display contents of a file.
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var pigCmd = cli.Command{
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Name: "pig",
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Usage: "Write contents of stdin to files. Pig is the opposite of cat command.",
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Action: mainPig,
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CustomHelpTemplate: `NAME:
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mc {{.Name}} - {{.Usage}}
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USAGE:
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mc {{.Name}} TARGET [TARGET...]
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EXAMPLES:
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1. Write contents of stdin to an object on Amazon S3 cloud storage.
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$ mc {{.Name}} https://s3.amazonaws.com/personalbuck/meeting-notes.txt
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2. Concatinate part files to an object on Amazon S3 cloud storage.
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$ cat part1.img part2.img | mc {{.Name}} https://s3.amazonaws.com/ferenginar/gnuos.iso
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3. Stream MySQL database dump to Amazon S3 directly.
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$ mysqldump -u root -p ******* accountsdb | mc {{.Name}} https://s3.amazonaws.com/ferenginar/backups/accountsdb-oct-9-2015.sql
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4. Contatinate a zip file to two object storage servers simultaneously.
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$ cat ~/myphotos.zip | mc {{.Name}} https://s3.amazonaws.com/mybucket/photos.zip https://minio.mystartup.io:9000/backup/photos.zip
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`,
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}
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// checkPigSyntax performs command-line input validation for pig command.
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func checkPigSyntax(ctx *cli.Context) {
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if !ctx.Args().Present() || ctx.Args().First() == "help" {
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cli.ShowCommandHelpAndExit(ctx, "pig", 1) // last argument is exit code
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}
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}
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// pig writes contents of stdin a collection of URLs.
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func pig(targetURLs []string) *probe.Error {
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URLs := []string{}
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config := mustGetMcConfig()
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for _, URL := range targetURLs {
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URLs = append(URLs, getAliasURL(URL, config.Aliases))
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}
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//Stream from stdin to multiple objects until EOF.
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// Ignore size, since os.Stat() would not return proper size all the time for local filesystem for example /proc files.
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err := putTargets(URLs, 0, os.Stdin)
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// TODO: See if this check is necessary.
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switch e := err.ToGoError().(type) {
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case *os.PathError:
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if e.Err == syscall.EPIPE {
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// stdin closed by the user. Gracefully exit.
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return nil
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}
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}
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return err.Trace()
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}
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// mainPig is the main entry point for pig command.
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func mainPig(ctx *cli.Context) {
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checkPigSyntax(ctx)
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fatalIf(pig(ctx.Args()).Trace(ctx.Args()...), "Unable to write to one or more targets.")
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}
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