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# -*- encoding: utf-8 -*-
require 'spec_helper'
require 'yaml'
require 'nokogiri'
module Aliyun
module OSS
describe "Resumable download" do
before :all do
@endpoint = 'oss-cn-hangzhou.aliyuncs.com'
@bucket_name = 'rubysdk-bucket'
@object_key = 'resumable_file'
@bucket = Client.new(
:endpoint => @endpoint,
:access_key_id => 'xxx',
:access_key_secret => 'yyy').get_bucket(@bucket_name)
@file = './download_file'
end
before :each do
File.delete("#{@file}.cpt") if File.exist?("#{@file}.cpt")
end
def object_url
"#{@bucket_name}.#{@endpoint}/#{@object_key}"
end
def mock_object(i)
i.to_s.rjust(9, '0') + "\n"
end
def mock_range(i)
"bytes=#{(i-1)*10}-#{i*10 - 1}"
end
def mock_error(code, message)
Nokogiri::XML::Builder.new do |xml|
xml.Error {
xml.Code code
xml.Message message
xml.RequestId '0000'
}
end.to_xml
end
it "should download file when all goes well" do
return_headers = {
'x-oss-object-type' => 'Normal',
'ETag' => 'xxxyyyzzz',
'Content-Length' => 100,
'Last-Modified' => Time.now.rfc822
}
# get object meta
stub_request(:head, object_url).to_return(:headers => return_headers)
# get object by range
stub_request(:get, object_url)
.to_return((1..10).map{ |i| {:body => mock_object(i)} })
prg = []
@bucket.resumable_download(
@object_key, @file, :part_size => 10) { |p| prg << p }
ranges = []
expect(WebMock).to have_requested(:get, object_url).with{ |req|
ranges << req.headers['Range']
}.times(10)
expect(ranges).to match_array((1..10).map{ |i| mock_range(i) })
expect(File.exist?("#{@file}.cpt")).to be false
expect(Dir.glob("#{@file}.part.*").empty?).to be true
expect(File.read(@file).lines)
.to match_array((1..10).map{ |i| mock_object(i) })
expect(prg.size).to eq(10)
end
it "should resume when download part fails" do
return_headers = {
'x-oss-object-type' => 'Normal',
'ETag' => 'xxxyyyzzz',
'Content-Length' => 100,
'Last-Modified' => Time.now.rfc822
}
# get object meta
stub_request(:head, object_url).to_return(:headers => return_headers)
code = 'Timeout'
message = 'Request timeout.'
# upload part
stub_request(:get, object_url)
.to_return((1..3).map{ |i| {:body => mock_object(i)} }).then
.to_return(:status => 500, :body => mock_error(code, message)).times(2).then
.to_return((4..9).map{ |i| {:body => mock_object(i)} }).then
.to_return(:status => 500, :body => mock_error(code, message)).then
.to_return((10..10).map{ |i| {:body => mock_object(i)} })
success = false
4.times do
begin
@bucket.resumable_download(
@object_key, @file, :part_size => 10, :threads => 1)
success = true
rescue
# pass
end
end
expect(success).to be true
ranges = []
expect(WebMock).to have_requested(:get, object_url).with{ |req|
ranges << req.headers['Range']
}.times(13)
expect(ranges.uniq).to match_array((1..10).map{ |i| mock_range(i) })
expect(File.read(@file)).to eq((1..10).map{ |i| mock_object(i) }.join)
end
it "should resume when checkpoint fails" do
# Monkey patch to inject failures
class ::Aliyun::OSS::Multipart::Download
alias :old_checkpoint :checkpoint
def checkpoint_fails
@@fail_injections ||= [false, false, true, true, false, true, false]
@@fail_injections.shift
end
def checkpoint
t = checkpoint_fails
if t == true
raise ClientError.new("fail injection")
end
old_checkpoint
end
end
return_headers = {
'x-oss-object-type' => 'Normal',
'ETag' => 'xxxyyyzzz',
'Content-Length' => 100,
'Last-Modified' => Time.now.rfc822
}
# get object meta
stub_request(:head, object_url).to_return(:headers => return_headers)
# get object by range
returns = [1, 1, 1, 2, 2, 3, 4, 5, 6, 7, 8, 9, 10]
stub_request(:get, object_url)
.to_return(returns.map{ |i| {:body => mock_object(i)} })
success = false
4.times do
begin
@bucket.resumable_download(
@object_key, @file, :part_size => 10, :threads => 1)
success = true
rescue
# pass
end
end
expect(success).to be true
expect(WebMock).to have_requested(:get, object_url).times(13)
expect(File.read(@file)).to eq((1..10).map{ |i| mock_object(i) }.join)
end
it "should not resume when specify disable_cpt" do
return_headers = {
'x-oss-object-type' => 'Normal',
'ETag' => 'xxxyyyzzz',
'Content-Length' => 100,
'Last-Modified' => Time.now.rfc822
}
# get object meta
stub_request(:head, object_url).to_return(:headers => return_headers)
code = 'Timeout'
message = 'Request timeout.'
# upload part
stub_request(:get, object_url)
.to_return((1..3).map{ |i| {:body => mock_object(i)} }).then
.to_return(:status => 500, :body => mock_error(code, message)).times(2).then
.to_return((1..9).map{ |i| {:body => mock_object(i)} }).then
.to_return(:status => 500, :body => mock_error(code, message)).then
.to_return((1..10).map{ |i| {:body => mock_object(i)} })
cpt_file = "#{File.expand_path(@file)}.cpt"
success = false
4.times do
begin
@bucket.resumable_download(
@object_key, @file, :part_size => 10,
:cpt_file => cpt_file, :disable_cpt => true, :threads => 1)
success = true
rescue
# pass
end
expect(File.exists?(cpt_file)).to be false
end
expect(success).to be true
expect(WebMock).to have_requested(:get, object_url).times(25)
expect(File.read(@file)).to eq((1..10).map{ |i| mock_object(i) }.join)
expect(Dir.glob("#{@file}.part.*").empty?).to be true
end
end # Resumable upload
end # OSS
end # Aliyun
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