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Files
mc/cmd-cat.go
Harshavardhana 9833697e0a Add more fixes and helpful messaging
- check for config file for each command, prior to error out properly
  - hostconfig doesn't do any key verification, let client s3 verify it as needed
  - mc update change URL pointed to dl.minio.io minio server, still not functional yet
2015-04-30 14:03:06 -07:00

100 lines
3.2 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 main
import (
"errors"
"io"
"github.com/minio-io/cli"
"github.com/minio-io/mc/pkg/console"
"github.com/minio-io/minio/pkg/iodine"
"github.com/minio-io/minio/pkg/utils/log"
)
const (
standardOutput = "/dev/stdout"
)
func runCatCmd(ctx *cli.Context) {
if !ctx.Args().Present() || ctx.Args().First() == "help" {
cli.ShowCommandHelpAndExit(ctx, "cat", 1) // last argument is exit code
}
if !isMcConfigExist() {
console.Fatalln("\"mc\" is not configured. Please run \"mc config generate\".")
}
config, err := getMcConfig()
if err != nil {
log.Debug.Println(iodine.New(err, nil))
console.Fatalf("loading config file failed with following reason: [%s]\n", iodine.ToError(err))
}
// Convert arguments to URLs: expand alias, fix format...
urls, err := getExpandedURLs(ctx.Args(), config.Aliases)
if err != nil {
switch e := iodine.ToError(err).(type) {
case errUnsupportedScheme:
log.Debug.Println(iodine.New(err, nil))
console.Fatalf("reading URL [%s] failed with following reason: [%s]\n", e.url, e)
default:
log.Debug.Println(iodine.New(err, nil))
console.Fatalf("reading URLs failed with following reason: [%s]\n", e)
}
}
sourceURLs := urls
sourceURLConfigMap, err := getHostConfigs(sourceURLs)
if err != nil {
log.Debug.Println(iodine.New(err, nil))
console.Fatalf("reading host config for URL [%s] failed with following reason: [%s]\n", sourceURLs, iodine.ToError(err))
}
humanReadable, err := doCatCmd(mcClientMethods{}, sourceURLConfigMap, standardOutput, globalDebugFlag)
if err != nil {
log.Debug.Println(iodine.New(err, nil))
console.Fatalln(humanReadable)
}
}
func doCatCmd(methods clientMethods, sourceURLConfigMap map[string]*hostConfig, targetURL string, debug bool) (string, error) {
for url, config := range sourceURLConfigMap {
sourceClnt, err := methods.getNewClient(url, config, debug)
if err != nil {
return "Unable to create client: " + url, iodine.New(err, nil)
}
reader, size, expectedMd5, err := sourceClnt.Get()
if err != nil {
return "Unable to retrieve file: " + url, iodine.New(err, nil)
}
defer reader.Close()
stdOutClnt, err := methods.getNewClient(targetURL, &hostConfig{}, debug)
if err != nil {
return "Unable to create client: " + url, iodine.New(err, nil)
}
stdOutWriter, err := stdOutClnt.Put(expectedMd5, size)
if err != nil {
return "Unable to retrieve file: " + url, iodine.New(err, nil)
}
defer stdOutWriter.Close()
_, err = io.CopyN(stdOutWriter, reader, size)
if err != nil {
return "Reading data from source failed: " + url, iodine.New(errors.New("Copy data from source failed"), nil)
}
}
return "", nil
}