86 lines
2.4 KiB
Go
86 lines
2.4 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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"os"
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"path/filepath"
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"strings"
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kConfig "github.com/GoogleContainerTools/kaniko/pkg/config"
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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/GoogleContainerTools/kaniko/pkg/util/bucket"
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"github.com/aws/aws-sdk-go/aws"
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"github.com/aws/aws-sdk-go/aws/session"
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"github.com/aws/aws-sdk-go/service/s3"
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"github.com/aws/aws-sdk-go/service/s3/s3manager"
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)
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// S3 unifies calls to download and unpack the build context.
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type S3 struct {
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context string
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}
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// UnpackTarFromBuildContext download and untar a file from s3
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func (s *S3) UnpackTarFromBuildContext() (string, error) {
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bucket, item, err := bucket.GetNameAndFilepathFromURI(s.context)
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if err != nil {
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return "", fmt.Errorf("getting bucketname and filepath from context: %w", err)
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}
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option := session.Options{
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SharedConfigState: session.SharedConfigEnable,
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}
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endpoint := os.Getenv(constants.S3EndpointEnv)
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forcePath := false
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if strings.ToLower(os.Getenv(constants.S3ForcePathStyle)) == "true" {
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forcePath = true
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}
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if endpoint != "" {
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option.Config = aws.Config{
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Endpoint: aws.String(endpoint),
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S3ForcePathStyle: aws.Bool(forcePath),
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}
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}
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sess, err := session.NewSessionWithOptions(option)
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if err != nil {
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return bucket, err
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}
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downloader := s3manager.NewDownloader(sess)
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directory := kConfig.BuildContextDir
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tarPath := filepath.Join(directory, constants.ContextTar)
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if err := os.MkdirAll(directory, 0750); err != nil {
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return directory, err
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}
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file, err := os.Create(tarPath)
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if err != nil {
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return directory, err
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}
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_, err = downloader.Download(file,
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&s3.GetObjectInput{
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Bucket: aws.String(bucket),
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Key: aws.String(item),
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})
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if err != nil {
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return directory, err
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}
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return directory, util.UnpackCompressedTar(tarPath, directory)
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}
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