Add --retry-download-count for retrying installing Xcode xip/dmg

lib/xcode/install.rb

@@ -25,13 +25,15 @@ class Curl
     # @param progress: parse and show the progress?
     # @param progress_block: A block that's called whenever we have an updated progress %
     #                        the parameter is a single number that's literally percent (e.g. 1, 50, 80 or 100)
+    # @param retry_download_count: A count to retry the downloading Xcode dmg/xip
     # rubocop:disable Metrics/AbcSize
     def fetch(url: nil,
               directory: nil,
               cookies: nil,
               output: nil,
               progress: nil,
-              progress_block: nil)
+              progress_block: nil,
+              retry_download_count: 3)
       options = cookies.nil? ? [] : ['--cookie', cookies, '--cookie-jar', COOKIES_PATH]
 
       uri = URI.parse(url)
@@ -78,7 +80,7 @@ def fetch(url: nil,
       # "Partial file. Only a part of the file was transferred."
       # https://curl.haxx.se/mail/archive-2008-07/0098.html
       # https://github.com/KrauseFx/xcode-install/issues/210
-      3.times do
+      retry_download_count.times do
         # Non-blocking call of Open3
         # We're not using the block based syntax, as the bacon testing
         # library doesn't seem to support writing tests for it
@@ -135,7 +137,7 @@ def current_symlink
       File.symlink?(SYMLINK_PATH) ? SYMLINK_PATH : nil
     end
 
-    def download(version, progress, url = nil, progress_block = nil)
+    def download(version, progress, url = nil, progress_block = nil, retry_download_count = 3)
       xcode = find_xcode_version(version) if url.nil?
       return if url.nil? && xcode.nil?
 
@@ -147,7 +149,8 @@ def download(version, progress, url = nil, progress_block = nil)
         cookies: url ? nil : spaceship.cookie,
         output: dmg_file,
         progress: progress,
-        progress_block: progress_block
+        progress_block: progress_block,
+        retry_download_count: retry_download_count
       )
       result ? CACHE_DIR + dmg_file : nil
     end
@@ -280,8 +283,8 @@ def install_dmg(dmg_path, suffix = '', switch = true, clean = true)
     end
 
     # rubocop:disable Metrics/ParameterLists
-    def install_version(version, switch = true, clean = true, install = true, progress = true, url = nil, show_release_notes = true, progress_block = nil)
-      dmg_path = get_dmg(version, progress, url, progress_block)
+    def install_version(version, switch = true, clean = true, install = true, progress = true, url = nil, show_release_notes = true, progress_block = nil, retry_download_count = 3)
+      dmg_path = get_dmg(version, progress, url, progress_block, retry_download_count)
       fail Informative, "Failed to download Xcode #{version}." if dmg_path.nil?
 
       if install
@@ -370,7 +373,7 @@ def enable_developer_mode
       `sudo /usr/sbin/dseditgroup -o edit -t group -a staff _developer`
     end
 
-    def get_dmg(version, progress = true, url = nil, progress_block = nil)
+    def get_dmg(version, progress = true, url = nil, progress_block = nil, retry_download_count = 3)
       if url
         path = Pathname.new(url)
         return path if path.exist?
@@ -381,7 +384,7 @@ def get_dmg(version, progress = true, url = nil, progress_block = nil)
         end
       end
 
-      download(version, progress, url, progress_block)
+      download(version, progress, url, progress_block, retry_download_count)
     end
 
     def fetch_seedlist
@@ -512,12 +515,13 @@ def xcode
       end
     end
 
-    def download(progress, progress_block = nil)
+    def download(progress, progress_block = nil, retry_download_count = 3)
       result = Curl.new.fetch(
         url: source,
         directory: CACHE_DIR,
         progress: progress,
-        progress_block: progress_block
+        progress_block: progress_block,
+        retry_download_count: retry_download_count
       )
       result ? dmg_path : nil
     end

lib/xcode/install/install.rb

@@ -17,7 +17,8 @@ def self.options
          ['--no-install', 'Only download DMG, but do not install it.'],
          ['--no-progress', 'Don’t show download progress.'],
          ['--no-clean', 'Don’t delete DMG after installation.'],
-         ['--no-show-release-notes', 'Don’t open release notes in browser after installation.']].concat(super)
+         ['--no-show-release-notes', 'Don’t open release notes in browser after installation.'],
+         ['--retry-download-count', 'Count of retrying download when curl is failed.']].concat(super)
       end
 
       def initialize(argv)
@@ -31,6 +32,7 @@ def initialize(argv)
         @should_switch = argv.flag?('switch', true)
         @progress = argv.flag?('progress', true)
         @show_release_notes = argv.flag?('show-release-notes', true)
+        @retry_download_count = argv.option('retry-download-count', '3')
         super
       end
 
@@ -44,11 +46,12 @@ def validate!
         end
         fail Informative, "Version #{@version} doesn't exist." unless @url || @installer.exist?(@version)
         fail Informative, "Invalid URL: `#{@url}`" unless !@url || @url =~ /\A#{URI.regexp}\z/
+        fail Informative, "Invalid Retry: `#{@retry_download_count} is not positive number.`" if (@retry_download_count =~ /\A[0-9]*\z/).nil?
       end
 
       def run
         @installer.install_version(@version, @should_switch, @should_clean, @should_install,
-                                   @progress, @url, @show_release_notes)
+                                   @progress, @url, @show_release_notes, nil, @retry_download_count.to_i)
       end
     end
   end

spec/install_spec.rb

@@ -12,32 +12,32 @@ module XcodeInstall
       end
 
       it 'downloads and installs' do
-        Installer.any_instance.expects(:download).with('6.3', true, nil, nil).returns('/some/path')
+        Installer.any_instance.expects(:download).with('6.3', true, nil, nil, 3).returns('/some/path')
         Installer.any_instance.expects(:install_dmg).with('/some/path', '-6.3', true, true)
         Command::Install.run(['6.3'])
       end
 
       it 'downloads and installs with custom HTTP URL' do
         url = 'http://yolo.com/xcode.dmg'
-        Installer.any_instance.expects(:download).with('6.3', true, url, nil).returns('/some/path')
+        Installer.any_instance.expects(:download).with('6.3', true, url, nil, 3).returns('/some/path')
         Installer.any_instance.expects(:install_dmg).with('/some/path', '-6.3', true, true)
         Command::Install.run(['6.3', "--url=#{url}"])
       end
 
       it 'downloads and installs and does not switch if --no-switch given' do
-        Installer.any_instance.expects(:download).with('6.3', true, nil, nil).returns('/some/path')
+        Installer.any_instance.expects(:download).with('6.3', true, nil, nil, 3).returns('/some/path')
         Installer.any_instance.expects(:install_dmg).with('/some/path', '-6.3', false, true)
         Command::Install.run(['6.3', '--no-switch'])
       end
 
       it 'downloads without progress if switch --no-progress is given' do
-        Installer.any_instance.expects(:download).with('6.3', false, nil, nil).returns('/some/path')
+        Installer.any_instance.expects(:download).with('6.3', false, nil, nil, 3).returns('/some/path')
         Installer.any_instance.expects(:install_dmg).with('/some/path', '-6.3', true, true)
         Command::Install.run(['6.3', '--no-progress'])
       end
 
       it 'reads .xcode-version' do
-        Installer.any_instance.expects(:download).with('6.3', true, nil, nil).returns('/some/path')
+        Installer.any_instance.expects(:download).with('6.3', true, nil, nil, 3).returns('/some/path')
         Installer.any_instance.expects(:install_dmg).with('/some/path', '-6.3', true, true)
         File.expects(:exist?).with('.xcode-version').returns(true)
         File.expects(:read).returns('6.3')