Modify annotated_run to read factory configs from the slave checkout.

scripts/slave/dump_factory_properties.py

Index: scripts/slave/dump_factory_properties.py
diff --git a/scripts/slave/dump_factory_properties.py b/scripts/slave/dump_factory_properties.py
new file mode 100644
index 0000000000000000000000000000000000000000..3fef1b077698ad323f9572811dde8231b0213850
--- /dev/null
+++ b/scripts/slave/dump_factory_properties.py
@@ -0,0 +1,85 @@
+#!/usr/bin/python

[iannucci, 2015/06/11 00:28:08]

probably want to put this in scripts/tools

[Dirk Pranke, 2015/06/11 01:13:43]

ok.

+
+import argparse
+import json
+import os
+import sys
+
+SCRIPT_DIR = os.path.abspath(os.path.dirname(__file__))
+sys.path.insert(0, os.path.join(os.path.dirname(__file__), os.pardir))
+
+import common.env
+
+common.env.Install()
+
+from common import master_cfg_utils
+from master import master_gen
+
+
+class Err(Exception):
+  pass
+
+
+def main(argv):
+
+  arg_parser = argparse.ArgumentParser()
+  arg_parser.add_argument('--output',
+                          help='path to write JSON output to instead of stdout')
+  arg_parser.add_argument('mastername', nargs=1)
+  arg_parser.add_argument('buildername', nargs=1)
+  args = arg_parser.parse_args(argv)
+
+  buildername = args.buildername[0]
+  mastername = args.mastername[0]
+
+  props = {}
+  message = ''
+  result = 0

[iannucci, 2015/06/11 00:28:08]

maybe 'ok' and make it a bool?

[Dirk Pranke, 2015/06/11 01:13:43]

Actually, looking at this now, it might be better to re-use more of the JSON
format Paweł uses for tests ..., so 'message' would be replaced by 'failures':
['...'], and we'd get rid of the result key.

+  try:
+    props = GetFactoryProperties(mastername, buildername)
+  except Exception as e:
+    message = str(e)
+    result = 1
+
+  output_str = json.dumps({
+          'factory_properties': props,
+          'message': message,
+          'result': result
+      }, sort_keys=2, indent=2)

[iannucci, 2015/06/11 00:28:08]

while 'sort_keys=2' technically works, you probably want True :)

[Dirk Pranke, 2015/06/11 01:13:43]

whoops, yes.

+
+  if args.output:
+    with open(args.output, 'w') as fp:
+      fp.write(output_str + '\n')
+  else:
+    print output_str

[iannucci, 2015/06/11 00:28:07]

consider

outfile = sys.stdout
if args.output:
  outfile = open(args.output. 'w')

with outfile:
  json.dump({...}, outfile)

[Dirk Pranke, 2015/06/11 01:13:43]

That will close sys.stdout() at the end, which might technically correct but is
also kinda weird.

+
+  return result
+
+
+def GetFactoryProperties(mastername, buildername):
+  master_list = master_cfg_utils.GetMasters()
+  master_path = None
+  for name, path in master_list:
+    if name == mastername:
+      master_path = path
+
+  if not master_path:
+    raise Err('master "%s" not found.' % mastername)

[iannucci, 2015/06/11 00:28:08]

tbh... I would probably just raise Exception (since you catch it anyway)

[Dirk Pranke, 2015/06/11 01:13:43]

Yeah, true, this is left over when I thought I would treat user-level errors
differently from runtime errors like write failing.

+
+  config = master_cfg_utils.LoadConfig(master_path, 'master.cfg')

[Paweł Hajdan Jr., 2015/06/11 08:38:19]

I think we have a very similar existing tool
build/scripts/tools/dump_master_cfg.py

Please consider extending it rather than writing yet another one.

+
+  for builder_dict in config['BuildmasterConfig']['builders']:
+    if builder_dict['name'] == buildername:
+      return dict((k, v) for k, v, _ in
+                  builder_dict['factory'].properties.asList())
+
+  raise Err('builder "%s" not found on in master "%s"' %
+            (buildername, mastername))
+
+
+
+if __name__ == '__main__':
+    sys.exit(main(sys.argv[1:]))
+
+basedir = os.path
+from twisted.application import service

[iannucci, 2015/06/11 00:28:08]

dare I ask?

[Dirk Pranke, 2015/06/11 01:13:43]

whoops, bad cut and paste, I think.