Class: ActiveStorage::Service::AzureStorageService

Inherits:
ActiveStorage::Service show all
Defined in:
lib/active_storage/service/azure_storage_service.rb

Overview

Wraps the Microsoft Azure Storage Blob Service as an Active Storage service. See ActiveStorage::Service for the generic API documentation that applies to all services.

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from ActiveStorage::Service

build, configure, #update_metadata

Constructor Details

#initialize(storage_account_name:, storage_access_key:, container:, **options) ⇒ AzureStorageService

Returns a new instance of AzureStorageService.



13
14
15
16
17
18
 
# File 'lib/active_storage/service/azure_storage_service.rb', line 13

def initialize(storage_account_name:, storage_access_key:, container:, **options)
  @client = Azure::Storage::Client.create(storage_account_name: , storage_access_key: storage_access_key, **options)
  @signer = Azure::Storage::Core::Auth::SharedAccessSignature.new(, storage_access_key)
  @blobs = client.blob_client
  @container = container
end

Instance Attribute Details

#blobs ⇒ Object (readonly)

Returns the value of attribute blobs.



11
12
13
 
# File 'lib/active_storage/service/azure_storage_service.rb', line 11

def blobs
  @blobs
end

#client ⇒ Object (readonly)

Returns the value of attribute client.



11
12
13
 
# File 'lib/active_storage/service/azure_storage_service.rb', line 11

def client
  @client
end

#container ⇒ Object (readonly)

Returns the value of attribute container.



11
12
13
 
# File 'lib/active_storage/service/azure_storage_service.rb', line 11

def container
  @container
end

#signer ⇒ Object (readonly)

Returns the value of attribute signer.



11
12
13
 
# File 'lib/active_storage/service/azure_storage_service.rb', line 11

def signer
  @signer
end

Instance Method Details

#delete(key) ⇒ Object 



50
51
52
53
54
55
56
57
58
 
# File 'lib/active_storage/service/azure_storage_service.rb', line 50

def delete(key)
  instrument :delete, key: key do
    begin
      blobs.delete_blob(container, key)
    rescue Azure::Core::Http::HTTPError
      # Ignore files already deleted
    end
  end
end

#delete_prefixed(prefix) ⇒ Object 



60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
 
# File 'lib/active_storage/service/azure_storage_service.rb', line 60

def delete_prefixed(prefix)
  instrument :delete_prefixed, prefix: prefix do
    marker = nil

    loop do
      results = blobs.list_blobs(container, prefix: prefix, marker: marker)

      results.each do |blob|
        blobs.delete_blob(container, blob.name)
      end

      break unless marker = results.continuation_token.presence
    end
  end
end

#download(key, &block) ⇒ Object 



30
31
32
33
34
35
36
37
38
39
40
41
 
# File 'lib/active_storage/service/azure_storage_service.rb', line 30

def download(key, &block)
  if block_given?
    instrument :streaming_download, key: key do
      stream(key, &block)
    end
  else
    instrument :download, key: key do
      _, io = blobs.get_blob(container, key)
      io.force_encoding(Encoding::BINARY)
    end
  end
end

#download_chunk(key, range) ⇒ Object 



43
44
45
46
47
48
 
# File 'lib/active_storage/service/azure_storage_service.rb', line 43

def download_chunk(key, range)
  instrument :download_chunk, key: key, range: range do
    _, io = blobs.get_blob(container, key, start_range: range.begin, end_range: range.exclude_end? ? range.end - 1 : range.end)
    io.force_encoding(Encoding::BINARY)
  end
end

#exist?(key) ⇒ Boolean

Returns:

  • (Boolean) 


76
77
78
79
80
81
82
 
# File 'lib/active_storage/service/azure_storage_service.rb', line 76

def exist?(key)
  instrument :exist, key: key do |payload|
    answer = blob_for(key).present?
    payload[:exist] = answer
    answer
  end
end

#headers_for_direct_upload(key, content_type:, checksum:) ⇒ Object 



116
117
118
 
# File 'lib/active_storage/service/azure_storage_service.rb', line 116

def headers_for_direct_upload(key, content_type:, checksum:, **)
  { "Content-Type" => content_type, "Content-MD5" => checksum, "x-ms-blob-type" => "BlockBlob" }
end

#upload(key, io, checksum: nil) ⇒ Object 



20
21
22
23
24
25
26
27
28
 
# File 'lib/active_storage/service/azure_storage_service.rb', line 20

def upload(key, io, checksum: nil, **)
  instrument :upload, key: key, checksum: checksum do
    begin
      blobs.create_block_blob(container, key, IO.try_convert(io) || io, content_md5: checksum)
    rescue Azure::Core::Http::HTTPError
      raise ActiveStorage::IntegrityError
    end
  end
end

#url(key, expires_in:, filename:, disposition:, content_type:) ⇒ Object 



84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
 
# File 'lib/active_storage/service/azure_storage_service.rb', line 84

def url(key, expires_in:, filename:, disposition:, content_type:)
  instrument :url, key: key do |payload|
    generated_url = signer.signed_uri(
      uri_for(key), false,
      service: "b",
      permissions: "r",
      expiry: format_expiry(expires_in),
      content_disposition: content_disposition_with(type: disposition, filename: filename),
      content_type: content_type
    ).to_s

    payload[:url] = generated_url

    generated_url
  end
end

#url_for_direct_upload(key, expires_in:, content_type:, content_length:, checksum:) ⇒ Object 



101
102
103
104
105
106
107
108
109
110
111
112
113
114
 
# File 'lib/active_storage/service/azure_storage_service.rb', line 101

def url_for_direct_upload(key, expires_in:, content_type:, content_length:, checksum:)
  instrument :url, key: key do |payload|
    generated_url = signer.signed_uri(
      uri_for(key), false,
      service: "b",
      permissions: "rw",
      expiry: format_expiry(expires_in)
    ).to_s

    payload[:url] = generated_url

    generated_url
  end
end