[Telemetry] Add capability for values to reference external files.

tools/telemetry/telemetry/results/json_output_formatter.py

Index: tools/telemetry/telemetry/results/json_output_formatter.py
diff --git a/tools/telemetry/telemetry/results/json_output_formatter.py b/tools/telemetry/telemetry/results/json_output_formatter.py
index bf23ede9b8452d039c828b6e99720b65c74370b9..96136f5d4340b83b9b7dd347da2c39b793d81bc3 100644
--- a/tools/telemetry/telemetry/results/json_output_formatter.py
+++ b/tools/telemetry/telemetry/results/json_output_formatter.py
@@ -2,9 +2,12 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import itertools
 import json
+import shutil
 
 from telemetry.results import output_formatter
+from telemetry.value import trace
 
 def ResultsAsDict(page_test_results, benchmark_metadata):
   """Takes PageTestResults to a dict serializable to JSON.
@@ -25,11 +28,27 @@ def ResultsAsDict(page_test_results, benchmark_metadata):
                        page_test_results.all_summary_values],
     'per_page_values': [v.AsDict() for v in
                         page_test_results.all_page_specific_values],
-    'pages': {p.id: p.AsDict() for p in _GetAllPages(page_test_results)}
+    'pages': {p.id: p.AsDict() for p in _GetAllPages(page_test_results)},
   }
 
+  trace_values = _AllTraceValues(page_test_results)

[nduca, 2014/09/16 20:56:24]

er, why not just all filehandles? e.g. you just do v for v in values if
v.GetFileHandle()?

+  files = dict()
+  for tv in trace_values:
+    fh = tv.GetAssociatedFileHandle()
+    name = str(fh.id) + '.json'
+    shutil.copy(fh.GetRelPath(), name)
+    files[fh.id] = name
+
+  if files:
+    result_dict['files'] = files
+
   return result_dict
 
+def _AllTraceValues(page_test_results):
+  values = itertools.chain(page_test_results.all_summary_values,
+                           page_test_results.all_page_specific_values)
+  return [v for v in values if isinstance(v, trace.TraceValue)]
+
 def _GetAllPages(page_test_results):
   pages = set(page_run.page for page_run in
               page_test_results.all_page_runs)