Class: AssetSync::Storage

Inherits:
Object
  • Object
show all
Defined in:
lib/asset_sync/storage.rb

Defined Under Namespace

Classes: BucketNotFound

Constant Summary collapse

REGEXP_FINGERPRINTED_FILES = 
/^(.*)\/([^-]+)-[^\.]+\.([^\.]+)$/
REGEXP_ASSETS_TO_CACHE_CONTROL = 
/-[0-9a-fA-F]{32,}$/

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(cfg) ⇒ Storage

Returns a new instance of Storage.



15
16
17
 
# File 'lib/asset_sync/storage.rb', line 15

def initialize(cfg)
  @config = cfg
end

Instance Attribute Details

#config ⇒ Object

Returns the value of attribute config.



13
14
15
 
# File 'lib/asset_sync/storage.rb', line 13

def config
  @config
end

Instance Method Details

#always_upload_files ⇒ Object 



49
50
51
 
# File 'lib/asset_sync/storage.rb', line 49

def always_upload_files
  expand_file_names(self.config.always_upload)
end

#bucket ⇒ Object 



23
24
25
26
 
# File 'lib/asset_sync/storage.rb', line 23

def bucket
  # fixes: https://github.com/rumblelabs/asset_sync/issues/18
  @bucket ||= connection.directories.get(self.config.fog_directory, :prefix => self.config.assets_prefix)
end

#connection ⇒ Object 



19
20
21
 
# File 'lib/asset_sync/storage.rb', line 19

def connection
  @connection ||= Fog::Storage.new(self.config.fog_options)
end

#delete_extra_remote_files ⇒ Object 



106
107
108
109
110
111
112
113
114
115
116
117
 
# File 'lib/asset_sync/storage.rb', line 106

def delete_extra_remote_files
  log "Fetching files to flag for delete"
  remote_files = get_remote_files
  # fixes: https://github.com/rumblelabs/asset_sync/issues/19
  from_remote_files_to_delete = remote_files - local_files - ignored_files - always_upload_files

  log "Flagging #{from_remote_files_to_delete.size} file(s) for deletion"
  # Delete unneeded remote files
  bucket.files.each do |f|
    delete_file(f, from_remote_files_to_delete)
  end
end

#delete_file(f, remote_files_to_delete) ⇒ Object 



99
100
101
102
103
104
 
# File 'lib/asset_sync/storage.rb', line 99

def delete_file(f, remote_files_to_delete)
  if remote_files_to_delete.include?(f.key)
    log "Deleting: #{f.key}"
    f.destroy
  end
end

#files_to_invalidate ⇒ Object 



57
58
59
 
# File 'lib/asset_sync/storage.rb', line 57

def files_to_invalidate
  self.config.invalidate.map { |filename| File.join("/", self.config.assets_prefix, filename) }
end

#files_with_custom_headers ⇒ Object 



53
54
55
 
# File 'lib/asset_sync/storage.rb', line 53

def files_with_custom_headers
  self.config.custom_headers.inject({}) { |h,(k, v)| h[File.join(self.config.assets_prefix, k)] = v; h; }
end

#get_local_files ⇒ Object 



61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
 
# File 'lib/asset_sync/storage.rb', line 61

def get_local_files
  if self.config.manifest
    if ActionView::Base.respond_to?(:assets_manifest)
      log "Using: Rails 4.0 manifest access"
      manifest = Sprockets::Manifest.new(ActionView::Base.assets_manifest.environment, ActionView::Base.assets_manifest.dir)
      return manifest.assets.values.map { |f| File.join(self.config.assets_prefix, f) }
    elsif File.exist?(self.config.manifest_path)
      log "Using: Manifest #{self.config.manifest_path}"
      yml = YAML.load(IO.read(self.config.manifest_path))

      return yml.map do |original, compiled|
        # Upload font originals and compiled
        if original =~ /^.+(eot|svg|ttf|woff)$/
          [original, compiled]
        else
          compiled
        end
      end.flatten.map { |f| File.join(self.config.assets_prefix, f) }.uniq!
    else
      log "Warning: Manifest could not be found"
    end
  end
  log "Using: Directory Search of #{path}/#{self.config.assets_prefix}"
  Dir.chdir(path) do
    to_load = self.config.assets_prefix.present? ? "#{self.config.assets_prefix}/**/**" : '**/**'
    Dir[to_load]
  end
end

#get_remote_files ⇒ Object

Raises:



90
91
92
93
94
95
96
97
 
# File 'lib/asset_sync/storage.rb', line 90

def get_remote_files
  raise BucketNotFound.new("#{self.config.fog_provider} Bucket: #{self.config.fog_directory} not found.") unless bucket
  # fixes: https://github.com/rumblelabs/asset_sync/issues/16
  #        (work-around for https://github.com/fog/fog/issues/596)
  files = []
  bucket.files.each { |f| files << f.key }
  return files
end

#ignored_files ⇒ Object 



40
41
42
 
# File 'lib/asset_sync/storage.rb', line 40

def ignored_files
  expand_file_names(self.config.ignored_files)
end

#keep_existing_remote_files? ⇒ Boolean

Returns:

  • (Boolean) 


32
33
34
 
# File 'lib/asset_sync/storage.rb', line 32

def keep_existing_remote_files?
  self.config.existing_remote_files?
end

#local_files ⇒ Object 



44
45
46
47
 
# File 'lib/asset_sync/storage.rb', line 44

def local_files
  @local_files ||=
    (get_local_files + config.additional_local_file_paths).uniq
end

#log(msg) ⇒ Object 



28
29
30
 
# File 'lib/asset_sync/storage.rb', line 28

def log(msg)
  AssetSync.log(msg)
end

#path ⇒ Object 



36
37
38
 
# File 'lib/asset_sync/storage.rb', line 36

def path
  self.config.public_path
end

#sync ⇒ Object 



231
232
233
234
235
236
237
 
# File 'lib/asset_sync/storage.rb', line 231

def sync
  # fixes: https://github.com/rumblelabs/asset_sync/issues/19
  log "AssetSync: Syncing."
  upload_files
  delete_extra_remote_files unless keep_existing_remote_files?
  log "AssetSync: Done."
end

#upload_file(f) ⇒ Object 



119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
 
# File 'lib/asset_sync/storage.rb', line 119

def upload_file(f)
  # TODO output files in debug logs as asset filename only.
  one_year = 31557600
  ext = File.extname(f)[1..-1]
  mime = MultiMime.lookup(ext)
  gzip_file_handle = nil
  file_handle = File.open("#{path}/#{f}")
  file = {
    :key => f,
    :body => file_handle,
    :public => true,
    :content_type => mime
  }

  uncompressed_filename = f.sub(/\.gz\z/, '')
  basename = File.basename(uncompressed_filename, File.extname(uncompressed_filename))

  assets_to_cache_control = Regexp.union([REGEXP_ASSETS_TO_CACHE_CONTROL] | config.cache_asset_regexps).source
  if basename.match(Regexp.new(assets_to_cache_control)).present?
    file.merge!({
      :cache_control => "public, max-age=#{one_year}",
      :expires => CGI.rfc1123_date(Time.now + one_year)
    })
  end

  # overwrite headers if applicable, you probably shouldn't specific key/body, but cache-control headers etc.

  if files_with_custom_headers.has_key? f
    file.merge! files_with_custom_headers[f]
    log "Overwriting #{f} with custom headers #{files_with_custom_headers[f].to_s}"
  elsif key = self.config.custom_headers.keys.detect {|k| f.match(Regexp.new(k))}
    headers = {}
    self.config.custom_headers[key].each do |k, value|
      headers[k.to_sym] = value
    end
    file.merge! headers
    log "Overwriting matching file #{f} with custom headers #{headers.to_s}"
  end


  gzipped = "#{path}/#{f}.gz"
  ignore = false

  if config.gzip? && File.extname(f) == ".gz"
    # Don't bother uploading gzipped assets if we are in gzip_compression mode
    # as we will overwrite file.css with file.css.gz if it exists.
    log "Ignoring: #{f}"
    ignore = true
  elsif config.gzip? && File.exist?(gzipped)
    original_size = File.size("#{path}/#{f}")
    gzipped_size = File.size(gzipped)

    if gzipped_size < original_size
      percentage = ((gzipped_size.to_f/original_size.to_f)*100).round(2)
      gzip_file_handle = File.open(gzipped)
      file.merge!({
                    :key => f,
                    :body => gzip_file_handle,
                    :content_encoding => 'gzip'
                  })
      log "Uploading: #{gzipped} in place of #{f} saving #{percentage}%"
    else
      percentage = ((original_size.to_f/gzipped_size.to_f)*100).round(2)
      log "Uploading: #{f} instead of #{gzipped} (compression increases this file by #{percentage}%)"
    end
  else
    if !config.gzip? && File.extname(f) == ".gz"
      # set content encoding for gzipped files this allows cloudfront to properly handle requests with Accept-Encoding
      # http://docs.amazonwebservices.com/AmazonCloudFront/latest/DeveloperGuide/ServingCompressedFiles.html
      uncompressed_filename = f[0..-4]
      ext = File.extname(uncompressed_filename)[1..-1]
      mime = MultiMime.lookup(ext)
      file.merge!({
        :content_type     => mime,
        :content_encoding => 'gzip'
      })
    end
    log "Uploading: #{f}"
  end

  if config.aws? && config.aws_rrs?
    file.merge!({
      :storage_class => 'REDUCED_REDUNDANCY'
    })
  end

  bucket.files.create( file ) unless ignore
  file_handle.close
  gzip_file_handle.close if gzip_file_handle
end

#upload_files ⇒ Object 



210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
 
# File 'lib/asset_sync/storage.rb', line 210

def upload_files
  # get a fresh list of remote files
  remote_files = ignore_existing_remote_files? ? [] : get_remote_files
  # fixes: https://github.com/rumblelabs/asset_sync/issues/19
  local_files_to_upload = local_files - ignored_files - remote_files + always_upload_files
  local_files_to_upload = (local_files_to_upload + get_non_fingerprinted(local_files_to_upload)).uniq

  # Upload new files
  local_files_to_upload.each do |f|
    next unless File.file? "#{path}/#{f}" # Only files.
    upload_file f
  end

  if self.config.cdn_distribution_id && files_to_invalidate.any?
    log "Invalidating Files"
    cdn ||= Fog::CDN.new(self.config.fog_options.except(:region))
    data = cdn.post_invalidation(self.config.cdn_distribution_id, files_to_invalidate)
    log "Invalidation id: #{data.body["Id"]}"
  end
end