Class: Bosh::Director::BlobUtil

Inherits:
Object
  • Object
show all
Defined in:
lib/bosh/director/blob_util.rb

Class Method Summary collapse

Class Method Details

.copy_blob(blobstore_id) ⇒ Object 



11
12
13
14
15
16
17
18
19
20
21
22
23
 
# File 'lib/bosh/director/blob_util.rb', line 11

def self.copy_blob(blobstore_id)
  # Create a copy of the given blob
  Dir.mktmpdir do |path|
    temp_path = File.join(path, "blob")
    File.open(temp_path, 'w') do |file|
      blobstore.get(blobstore_id, file)
    end
    File.open(temp_path, 'r') do |file|
      blobstore_id = blobstore.create(file)
    end
  end
  blobstore_id
end

.create_blob(path) ⇒ String

Returns Created blob id.

Parameters:

  • path (String) —

    Path to a file to be uploaded

Returns:

  • (String) —

    Created blob id



7
8
9
 
# File 'lib/bosh/director/blob_util.rb', line 7

def self.create_blob(path)
  File.open(path) { |f| blobstore.create(f) }
end

.exists_in_global_cache?(package, cache_key) ⇒ Boolean

Returns:

  • (Boolean) 


39
40
41
42
 
# File 'lib/bosh/director/blob_util.rb', line 39

def self.exists_in_global_cache?(package, cache_key)
  global_cache_filename = [package.name, cache_key].join('-')
  compiled_package_cache_blobstore.exists?(global_cache_filename)
end

.fetch_from_global_cache(package, stemcell, cache_key, dependency_key) ⇒ Object 



44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
 
# File 'lib/bosh/director/blob_util.rb', line 44

def self.fetch_from_global_cache(package, stemcell, cache_key, dependency_key)
  global_cache_filename = [package.name, cache_key].join('-')

  blobstore_id = nil
  compiled_package_sha1 = nil

  Dir.mktmpdir do |path|
    blob_path = File.join(path, 'blob')
    begin
      File.open(blob_path, 'wb') do |file|
        compiled_package_cache_blobstore.get(global_cache_filename, file)
      end
    rescue Bosh::Blobstore::NotFound => e
      # if the object is not found in the cache, we ignore it and return nil
      return nil
    end

    File.open(blob_path) do |file|
      blobstore_id = blobstore.create(file)
      compiled_package_sha1 = Digest::SHA1.file(blob_path).hexdigest
    end
  end

  Models::CompiledPackage.create do |p|
    p.package = package
    p.stemcell = stemcell
    p.sha1 = compiled_package_sha1
    p.build = Models::CompiledPackage.generate_build_number(package, stemcell)
    p.blobstore_id = blobstore_id
    p.dependency_key = dependency_key
  end
end

.save_to_global_cache(compiled_package, cache_key) ⇒ Object 



25
26
27
28
29
30
31
32
33
34
35
36
37
 
# File 'lib/bosh/director/blob_util.rb', line 25

def self.save_to_global_cache(compiled_package, cache_key)
  global_cache_filename = [compiled_package.package.name, cache_key].join('-')
  Dir.mktmpdir do |path|
    temp_path = File.join(path, 'blob')
    File.open(temp_path, 'wb') do |file|
      blobstore.get(compiled_package.blobstore_id, file)
    end

    File.open(temp_path) do |file|
      compiled_package_cache_blobstore.create(file, global_cache_filename)
    end
  end
end