66 lines
2.1 KiB
Go
66 lines
2.1 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 util
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import (
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"cloud.google.com/go/storage"
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"github.com/GoogleCloudPlatform/k8s-container-builder/pkg/constants"
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"github.com/sirupsen/logrus"
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"golang.org/x/net/context"
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"os"
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"path/filepath"
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)
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// UnpackTarFromGCSBucket unpacks the kbuild.tar file in the given bucket to the given directory
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func UnpackTarFromGCSBucket(bucketName, directory string) error {
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// Get the tar from the bucket
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tarPath, err := getTarFromBucket(bucketName, directory)
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if err != nil {
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return err
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}
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logrus.Debug("Unpacking source context tar...")
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if err := UnpackCompressedTar(tarPath, directory); err != nil {
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return err
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}
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// Remove the tar so it doesn't interfere with subsequent commands
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logrus.Debugf("Deleting %s", tarPath)
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return os.Remove(tarPath)
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}
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// getTarFromBucket gets kbuild.tar from the GCS bucket and saves it to the filesystem
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// It returns the path to the tar file
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func getTarFromBucket(bucketName, directory string) (string, error) {
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ctx := context.Background()
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client, err := storage.NewClient(ctx)
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if err != nil {
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return "", err
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}
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bucket := client.Bucket(bucketName)
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// Get the tarfile kbuild.tar from the GCS bucket, and save it to a tar object
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reader, err := bucket.Object(constants.ContextTar).NewReader(ctx)
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if err != nil {
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return "", err
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}
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defer reader.Close()
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tarPath := filepath.Join(directory, constants.ContextTar)
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if err := CreateFile(tarPath, reader, 0600); err != nil {
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return "", err
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}
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logrus.Debugf("Copied tarball %s from GCS bucket %s to %s", constants.ContextTar, bucketName, tarPath)
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return tarPath, nil
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}
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