lib/fog/storage/google_xml/requests/get_object.rb
module Fog
module Storage
class GoogleXML
class Real
# Get an object from Google Storage
#
# ==== Parameters
# * bucket_name<~String> - Name of bucket to read from
# * object_name<~String> - Name of object to read
# * options<~Hash>:
# * 'If-Match'<~String> - Returns object only if its etag matches this value, otherwise returns 412 (Precondition Failed).
# * 'If-Modified-Since'<~Time> - Returns object only if it has been modified since this time, otherwise returns 304 (Not Modified).
# * 'If-None-Match'<~String> - Returns object only if its etag differs from this value, otherwise returns 304 (Not Modified)
# * 'If-Unmodified-Since'<~Time> - Returns object only if it has not been modified since this time, otherwise returns 412 (Precodition Failed).
# * 'Range'<~String> - Range of object to download
# * 'versionId'<~String> - specify a particular version to retrieve
#
# ==== Returns
# * response<~Excon::Response>:
# * body<~String> - Contents of object
# * headers<~Hash>:
# * 'Content-Length'<~String> - Size of object contents
# * 'Content-Type'<~String> - MIME type of object
# * 'ETag'<~String> - Etag of object
# * 'Last-Modified'<~String> - Last modified timestamp for object
#
def get_object(bucket_name, object_name, options = {}, &block)
raise ArgumentError.new("bucket_name is required") unless bucket_name
raise ArgumentError.new("object_name is required") unless object_name
params = { :headers => {} }
if version_id = options.delete("versionId")
params[:query] = { "versionId" => version_id }
end
params[:headers].merge!(options)
if options["If-Modified-Since"]
params[:headers]["If-Modified-Since"] = Fog::Time.at(options["If-Modified-Since"].to_i).to_date_header
end
if options["If-Modified-Since"]
params[:headers]["If-Unmodified-Since"] = Fog::Time.at(options["If-Unmodified-Since"].to_i).to_date_header
end
params[:response_block] = block if block_given?
request(params.merge!(:expects => [200, 206],
:host => "#{bucket_name}.#{@host}",
:idempotent => true,
:method => "GET",
:path => Fog::Google.escape(object_name)))
end
end
class Mock
def get_object(bucket_name, object_name, options = {})
raise ArgumentError.new("bucket_name is required") unless bucket_name
raise ArgumentError.new("object_name is required") unless object_name
response = Excon::Response.new
if (bucket = data[:buckets][bucket_name]) && (object = bucket[:objects][object_name])
if options["If-Match"] && options["If-Match"] != object["ETag"]
response.status = 412
elsif options["If-Modified-Since"] && options["If-Modified-Since"] >= Time.parse(object["Last-Modified"])
response.status = 304
elsif options["If-None-Match"] && options["If-None-Match"] == object["ETag"]
response.status = 304
elsif options["If-Unmodified-Since"] && options["If-Unmodified-Since"] < Time.parse(object["Last-Modified"])
response.status = 412
else
response.status = 200
for key, value in object
case key
when "Cache-Control", "Content-Disposition", "Content-Encoding", "Content-Length", "Content-MD5", "Content-Type", "ETag", "Expires", "Last-Modified", /^x-goog-meta-/
response.headers[key] = value
end
end
if block_given?
data = StringIO.new(object[:body])
remaining = data.length
while remaining > 0
chunk = data.read([remaining, Excon::CHUNK_SIZE].min)
yield(chunk)
remaining -= Excon::CHUNK_SIZE
end
else
response.body = object[:body]
end
end
else
response.status = 404
raise(Excon::Errors.status_error({ :expects => 200 }, response))
end
response
end
end
end
end
end