github.com/GoogleContainerTools/kaniko@v1.23.0/pkg/util/bucket/bucket_util.go (about)

     1  /*
     2  Copyright 2018 Google LLC
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package bucket
    18  
    19  import (
    20  	"context"
    21  	"fmt"
    22  	"io"
    23  	"net/url"
    24  	"strings"
    25  
    26  	"cloud.google.com/go/storage"
    27  	"github.com/GoogleContainerTools/kaniko/pkg/constants"
    28  	"google.golang.org/api/option"
    29  )
    30  
    31  // Upload uploads everything from Reader to the bucket under path
    32  func Upload(ctx context.Context, bucketName string, path string, r io.Reader, client *storage.Client) error {
    33  	bucket := client.Bucket(bucketName)
    34  	w := bucket.Object(path).NewWriter(ctx)
    35  	if _, err := io.Copy(w, r); err != nil {
    36  		return err
    37  	}
    38  	if err := w.Close(); err != nil {
    39  		return err
    40  	}
    41  	return nil
    42  }
    43  
    44  // Delete will remove the content at path. path should be the full path
    45  // to a file in GCS.
    46  func Delete(ctx context.Context, bucketName string, path string, client *storage.Client) error {
    47  	err := client.Bucket(bucketName).Object(path).Delete(ctx)
    48  	if err != nil {
    49  		return fmt.Errorf("failed to delete file at %s in gcs bucket %v: %w", path, bucketName, err)
    50  	}
    51  	return err
    52  }
    53  
    54  // ReadCloser will create io.ReadCloser for the specified bucket and path
    55  func ReadCloser(ctx context.Context, bucketName string, path string, client *storage.Client) (io.ReadCloser, error) {
    56  	bucket := client.Bucket(bucketName)
    57  	r, err := bucket.Object(path).NewReader(ctx)
    58  	if err != nil {
    59  		return nil, err
    60  	}
    61  	return r, nil
    62  }
    63  
    64  // NewClient returns a new google storage client
    65  func NewClient(ctx context.Context, opts ...option.ClientOption) (*storage.Client, error) {
    66  	client, err := storage.NewClient(ctx, opts...)
    67  	if err != nil {
    68  		return nil, err
    69  	}
    70  	return client, err
    71  }
    72  
    73  // GetNameAndFilepathFromURI returns the bucketname and the path to the item inside.
    74  // Will error if provided URI is not a valid URL.
    75  // If the filepath is empty, returns the contextTar filename
    76  func GetNameAndFilepathFromURI(bucketURI string) (bucketName string, path string, err error) {
    77  	url, err := url.Parse(bucketURI)
    78  	if err != nil {
    79  		return "", "", err
    80  	}
    81  	bucketName = url.Host
    82  	// remove leading slash
    83  	filePath := strings.TrimPrefix(url.Path, "/")
    84  	if filePath == "" {
    85  		filePath = constants.ContextTar
    86  	}
    87  	return bucketName, filePath, nil
    88  }