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fog--fog/lib/fog/rackspace/models/storage/files.rb
2014-02-19 12:30:59 +00:00

204 lines
7.9 KiB
Ruby

require 'fog/core/collection'
require 'fog/rackspace/models/storage/file'
module Fog
module Storage
class Rackspace
class Files < Fog::Collection
# @!attribute [rw] directory
# @return [String] The name of the directory
# @note Methods in this class require this attribute to be set
attribute :directory
# @!attribute [rw] limit
# @return [Integer] For an integer value n, limits the number of results to at most n values.
# @see http://docs.rackspace.com/files/api/v1/cf-devguide/content/List_Large_Number_of_Objects-d1e1521.html
attribute :limit
# @!attribute [rw] marker
# @return [String] Given a string value x, return object names greater in value than the specified marker.
# @see http://docs.rackspace.com/files/api/v1/cf-devguide/content/List_Large_Number_of_Objects-d1e1521.html
attribute :marker
# @!attribute [rw] path
# @return [String] For a string value x, return the object names nested in the pseudo path.
# Equivalent to setting delimiter to '/' and prefix to the path with a '/' on the end.
attribute :path
# @!attribute [rw] prefix
# @return [String] For a string value x, causes the results to be limited to object names beginning with the substring x.
attribute :prefix
model Fog::Storage::Rackspace::File
# Returns list of files
# @return [Fog::Storage::Rackspace::Files] Retrieves a list files.
# @raise [Fog::Storage::Rackspace::NotFound] - HTTP 404
# @raise [Fog::Storage::Rackspace::BadRequest] - HTTP 400
# @raise [Fog::Storage::Rackspace::InternalServerError] - HTTP 500
# @raise [Fog::Storage::Rackspace::ServiceError]
# @see http://docs.rackspace.com/files/api/v1/cf-devguide/content/List_Objects-d1e1284.html
def all(options = {})
requires :directory
options = {
'limit' => limit,
'marker' => marker,
'path' => path,
'prefix' => prefix
}.merge!(options)
merge_attributes(options)
parent = directory.collection.get(
directory.key,
options
)
if parent
load(parent.files.map {|file| file.attributes})
else
nil
end
end
# Calls block for each file in the directory
# @yieldparam [Fog::Storage::Rackspace::File]
# @return [Fog::Storage::Rackspace::Directory] returns itself
# @raise [Fog::Storage::Rackspace::NotFound] - HTTP 404
# @raise [Fog::Storage::Rackspace::BadRequest] - HTTP 400
# @raise [Fog::Storage::Rackspace::InternalServerError] - HTTP 500
# @raise [Fog::Storage::Rackspace::ServiceError]
# @note This method retrieves files in pages. Page size is defined by the limit attribute
alias :each_file_this_page :each
def each
if !block_given?
self
else
subset = dup.all
subset.each_file_this_page {|f| yield f}
while subset.length == (subset.limit || 10000)
subset = subset.all(:marker => subset.last.key)
subset.each_file_this_page {|f| yield f}
end
self
end
end
# Retrieves file
# @param [String] key of file
# @yield get yields to block after chunk of data has been received (Optional)
# @yieldparam [String] data
# @yieldparam [Integer] remaining
# @yieldparam [Integer] content_length
# @return [Fog::Storage::Rackspace:File]
# @raise [Fog::Storage::Rackspace::NotFound] - HTTP 404
# @raise [Fog::Storage::Rackspace::BadRequest] - HTTP 400
# @raise [Fog::Storage::Rackspace::InternalServerError] - HTTP 500
# @raise [Fog::Storage::Rackspace::ServiceError]
# @note If a block is provided, the body attribute will be empty. By default chunk size is 1 MB. This value can be changed by passing the parameter :chunk_size
# into the :connection_options hash in the service constructor.
# @example Download an image from Cloud Files and save it to file
#
# File.open('download.jpg', 'w') do | f |
# my_directory.files.get("europe.jpg") do |data, remaing, content_length|
# f.syswrite data
# end
# end
#
# @see http://docs.rackspace.com/files/api/v1/cf-devguide/content/Retrieve_Object-d1e1856.html
def get(key, &block)
requires :directory
data = service.get_object(directory.key, key, &block)
metadata = Metadata.from_headers(self, data.headers)
file_data = data.headers.merge({
:body => data.body,
:key => key,
:metadata => metadata
})
new(file_data)
rescue Fog::Storage::Rackspace::NotFound
nil
end
# Returns the public_url for the given object key
# @param key of the object
# @return [String] url for object
# @raise [Fog::Storage::Rackspace::NotFound] - HTTP 404
# @raise [Fog::Storage::Rackspace::BadRequest] - HTTP 400
# @raise [Fog::Storage::Rackspace::InternalServerError] - HTTP 500
# @raise [Fog::Storage::Rackspace::ServiceError]
# @see Directory#public_url
def get_url(key)
requires :directory
if self.directory.public_url
Files::file_url directory.public_url, key
end
end
# Get a temporary http url for a file.
#
# required attributes: key
# @param key [String] the key of the file within the directory
# @param expires [String] number of seconds (since 1970-01-01 00:00) before url expires
# @param options [Hash]
# @return [String] url
# @note This URL does not use the Rackspace CDN
def get_http_url(key, expires, options = {})
requires :directory
service.get_object_http_url(directory.key, key, expires, options)
end
# Get a temporary https url for a file.
#
# required attributes: key
# @param key [String] the key of the file within the directory
# @param expires [String] number of seconds (since 1970-01-01 00:00) before url expires
# @param options [Hash]
# @return [String] url
# @note This URL does not use the Rackspace CDN
def get_https_url(key, expires, options = {})
service.get_object_https_url(directory.key, key, expires, options)
end
# View directory detail without loading file contents
# @param key of the object
# @param options Required for compatibility with other Fog providers. Not Used.
# @return [Fog::Storage::Rackspace::File]
# @raise [Fog::Storage::Rackspace::NotFound] - HTTP 404
# @raise [Fog::Storage::Rackspace::BadRequest] - HTTP 400
# @raise [Fog::Storage::Rackspace::InternalServerError] - HTTP 500
# @raise [Fog::Storage::Rackspace::ServiceError]
def head(key, options = {})
requires :directory
data = service.head_object(directory.key, key)
file_data = data.headers.merge({
:key => key
})
new(file_data)
rescue Fog::Storage::Rackspace::NotFound
nil
end
# Create a new file object
# @param [Hash] attributes of object
# @return [Fog::Storage::Rackspace::File]
def new(attributes = {})
requires :directory
super({ :directory => directory }.merge!(attributes))
end
# Returns an escaped object url
# @param [String] path of the url
# @param [String] key of the object
# @return [String] escaped file url
def self.file_url(path, key)
return nil unless path
"#{path}/#{Fog::Rackspace.escape(key, '/')}"
end
end
end
end
end