Added support for versioning of layout test results of run-webkit-tests runs

Tools/Scripts/webkitpy/layout_tests/generate_results_dashboard.py

Index: Tools/Scripts/webkitpy/layout_tests/generate_results_dashboard.py
diff --git a/Tools/Scripts/webkitpy/layout_tests/generate_results_dashboard.py b/Tools/Scripts/webkitpy/layout_tests/generate_results_dashboard.py
new file mode 100644
index 0000000000000000000000000000000000000000..02eb9fec3dfb0fa48e3eada60d0d6fb3536da3cf
--- /dev/null
+++ b/Tools/Scripts/webkitpy/layout_tests/generate_results_dashboard.py
@@ -0,0 +1,92 @@
+# Copyright (C) 2014 Google Inc. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import json
+
+from webkitpy.layout_tests.process_json_data import ProcessJsonData
+
+
+class GenerateDashBoard(object):
+
+    def __init__(self, port):
+        self._port = port
+        self._filesystem = port.host.filesystem
+        self._results_directory = self._port.results_directory()
+        self._release_directory = self._filesystem.dirname(self._results_directory)
+        self._current_result_json_dict = {}
+        self._old_failing_results_list = []
+        self._old_full_results_list = []
+        self._final_result = []
+
+    def _add_individual_result_links(self, results_directories):
+        archived_results_file_list = [(file + '/results.html') for file in results_directories]
+        self._current_result_json_dict['result_links'] = archived_results_file_list
+
+    def _copy_dashboard_html(self):
+        dashboard_file = self._filesystem.join(self._results_directory, 'dashboard.html')
+        dashboard_html_file_path = self._filesystem.join(self._port.layout_tests_dir(), 'fast/harness/dashboard.html')
+        if not self._filesystem.exists(dashboard_file):
+            if self._filesystem.exists(dashboard_html_file_path):
+                self._filesystem.copyfile(dashboard_html_file_path, dashboard_file)
+
+    def _initialize(self):
+        file_list = self._filesystem.listdir(self._release_directory)
+        results_directories = []
+        for dir in file_list:
+            if self._filesystem.isdir(self._filesystem.join(self._release_directory, dir)):
+                results_directories.append(self._filesystem.join(self._release_directory, dir))
+        results_directories.sort(reverse=True, key=lambda x: self._filesystem.mtime(x))
+        with open(self._filesystem.join(results_directories[0], 'failing_results.json'), "r") as file:
+            input_json_string = file.readline()
+        input_json_string = input_json_string[12:-2]   # Remove preceeding string ADD_RESULTS( and ); at the end
+        self._current_result_json_dict['tests'] = json.loads(input_json_string)['tests']
+
+        # To add hyperlink to individual results.html
+        self._add_individual_result_links(results_directories)
+        results_directories = results_directories[1:]
+
+        # Load the remaining stale layout test results Json's to create the dashboard
+        for json_file in results_directories:
+            with open(self._filesystem.join(json_file, 'failing_results.json'), "r") as file:
+                json_string = file.readline()
+            json_string = json_string[12:-2]   # Remove preceeding string ADD_RESULTS( and ); at the end
+            self._old_failing_results_list.append(json.loads(json_string))
+
+            with open(self._filesystem.join(json_file, 'full_results.json'), "r") as full_file:
+                json_string_full_result = full_file.readline()
+            self._old_full_results_list.append(json.loads(json_string_full_result))
+        self._copy_dashboard_html()
+
+    def generate(self):
+        self._initialize()
+        process_json_data = ProcessJsonData(self._current_result_json_dict, self._old_failing_results_list, self._old_full_results_list)
+        self._final_result = process_json_data.generate_archived_result()
+        final_json = json.dumps(self._final_result)
+        final_json = 'ADD_RESULTS(' + final_json + ');'
+        with open(self._filesystem.join(self._results_directory, 'archived_results.json'), "w") as file:
+            file.write(final_json)