github.com/bloxroute-labs/bor@v0.1.4/internal/build/azure.go (about)

     1  // Copyright 2016 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package build
    18  
    19  import (
    20  	"context"
    21  	"fmt"
    22  	"net/url"
    23  	"os"
    24  
    25  	"github.com/Azure/azure-storage-blob-go/2018-03-28/azblob"
    26  )
    27  
    28  // AzureBlobstoreConfig is an authentication and configuration struct containing
    29  // the data needed by the Azure SDK to interact with a speicifc container in the
    30  // blobstore.
    31  type AzureBlobstoreConfig struct {
    32  	Account   string // Account name to authorize API requests with
    33  	Token     string // Access token for the above account
    34  	Container string // Blob container to upload files into
    35  }
    36  
    37  // AzureBlobstoreUpload uploads a local file to the Azure Blob Storage. Note, this
    38  // method assumes a max file size of 64MB (Azure limitation). Larger files will
    39  // need a multi API call approach implemented.
    40  //
    41  // See: https://msdn.microsoft.com/en-us/library/azure/dd179451.aspx#Anchor_3
    42  func AzureBlobstoreUpload(path string, name string, config AzureBlobstoreConfig) error {
    43  	if *DryRunFlag {
    44  		fmt.Printf("would upload %q to %s/%s/%s\n", path, config.Account, config.Container, name)
    45  		return nil
    46  	}
    47  	// Create an authenticated client against the Azure cloud
    48  	credential := azblob.NewSharedKeyCredential(config.Account, config.Token)
    49  	pipeline := azblob.NewPipeline(credential, azblob.PipelineOptions{})
    50  
    51  	u, _ := url.Parse(fmt.Sprintf("https://%s.blob.core.windows.net", config.Account))
    52  	service := azblob.NewServiceURL(*u, pipeline)
    53  
    54  	container := service.NewContainerURL(config.Container)
    55  	blockblob := container.NewBlockBlobURL(name)
    56  
    57  	// Stream the file to upload into the designated blobstore container
    58  	in, err := os.Open(path)
    59  	if err != nil {
    60  		return err
    61  	}
    62  	defer in.Close()
    63  
    64  	_, err = blockblob.Upload(context.Background(), in, azblob.BlobHTTPHeaders{}, azblob.Metadata{}, azblob.BlobAccessConditions{})
    65  	return err
    66  }
    67  
    68  // AzureBlobstoreList lists all the files contained within an azure blobstore.
    69  func AzureBlobstoreList(config AzureBlobstoreConfig) ([]azblob.BlobItem, error) {
    70  	credential := azblob.NewSharedKeyCredential(config.Account, config.Token)
    71  	pipeline := azblob.NewPipeline(credential, azblob.PipelineOptions{})
    72  
    73  	u, _ := url.Parse(fmt.Sprintf("https://%s.blob.core.windows.net", config.Account))
    74  	service := azblob.NewServiceURL(*u, pipeline)
    75  
    76  	// List all the blobs from the container and return them
    77  	container := service.NewContainerURL(config.Container)
    78  
    79  	res, err := container.ListBlobsFlatSegment(context.Background(), azblob.Marker{}, azblob.ListBlobsSegmentOptions{
    80  		MaxResults: 1024 * 1024 * 1024, // Yes, fetch all of them
    81  	})
    82  	if err != nil {
    83  		return nil, err
    84  	}
    85  	return res.Segment.BlobItems, nil
    86  }
    87  
    88  // AzureBlobstoreDelete iterates over a list of files to delete and removes them
    89  // from the blobstore.
    90  func AzureBlobstoreDelete(config AzureBlobstoreConfig, blobs []azblob.BlobItem) error {
    91  	if *DryRunFlag {
    92  		for _, blob := range blobs {
    93  			fmt.Printf("would delete %s (%s) from %s/%s\n", blob.Name, blob.Properties.LastModified, config.Account, config.Container)
    94  		}
    95  		return nil
    96  	}
    97  	// Create an authenticated client against the Azure cloud
    98  	credential := azblob.NewSharedKeyCredential(config.Account, config.Token)
    99  	pipeline := azblob.NewPipeline(credential, azblob.PipelineOptions{})
   100  
   101  	u, _ := url.Parse(fmt.Sprintf("https://%s.blob.core.windows.net", config.Account))
   102  	service := azblob.NewServiceURL(*u, pipeline)
   103  
   104  	container := service.NewContainerURL(config.Container)
   105  
   106  	// Iterate over the blobs and delete them
   107  	for _, blob := range blobs {
   108  		blockblob := container.NewBlockBlobURL(blob.Name)
   109  		if _, err := blockblob.Delete(context.Background(), azblob.DeleteSnapshotsOptionInclude, azblob.BlobAccessConditions{}); err != nil {
   110  			return err
   111  		}
   112  	}
   113  	return nil
   114  }