62 lines
1.9 KiB
Go
62 lines
1.9 KiB
Go
/*
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Copyright 2018 Google LLC
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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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http://www.apache.org/licenses/LICENSE-2.0
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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 buildcontext
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import (
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"github.com/GoogleContainerTools/kaniko/pkg/constants"
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"github.com/GoogleContainerTools/kaniko/pkg/util"
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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)
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// Tar unifies calls to download and unpack the build context.
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type Tar struct {
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context string
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}
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// UnpackTarFromBuildContext unpack the compressed tar file
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func (t *Tar) UnpackTarFromBuildContext() (string, error) {
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directory := constants.BuildContextDir
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if err := os.MkdirAll(directory, 0750); err != nil {
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return "", errors.Wrap(err, "unpacking tar from build context")
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}
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if t.context == "stdin" {
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fi, _ := os.Stdin.Stat()
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if (fi.Mode() & os.ModeCharDevice) != 0 {
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return "", fmt.Errorf("no data found.. don't forget to add the '--interactive, -i' flag")
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}
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logrus.Infof("To simulate EOF and exit, press 'Ctrl+D'")
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// if launched through docker in interactive mode and without piped data
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// process will be stuck here until EOF is sent
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data, err := util.GetInputFrom(os.Stdin)
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if err != nil {
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return "", errors.Wrap(err, "fail to get standard input")
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}
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t.context = filepath.Join(directory, constants.ContextTar)
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if err := ioutil.WriteFile(t.context, data, 0644); err != nil {
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return "", errors.Wrap(err, "fail to redirect standard input into compressed tar file")
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}
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}
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return directory, util.UnpackCompressedTar(t.context, directory)
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}
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