commit ad8c87e0bac4ed7c7e71d681b1d6d7458e2ca5a0
author Keun Soo Yim <yim@google.com> Sat Jul 30 07:00:52 2016 -0700
committer Keun Soo Yim <yim@google.com> Sat Jul 30 07:00:52 2016 -0700
tree 39eb70361260b96f07fe98022e07ed0c2e177f00
parent 6bf0abe21302c4d52d0026029de89348eb5bd342

print vts agent log when there is an error

Change-Id: I2a4dfdae2ea485be6a8c367dc9e1b939aaf5cf2b

utils/python/controllers/android_device.py

diff --git a/utils/python/controllers/android_device.py b/utils/python/controllers/android_device.py
index b7241b8..822da78 100644
--- a/utils/python/controllers/android_device.py
+++ b/utils/python/controllers/android_device.py
@@ -610,9 +610,15 @@
         ).format(s=self.serial,
                  path=DEFAULT_AGENT_BASE_DIR,
                  log=vts_agent_log_path)
-        self.vts_agent_process = utils.start_standing_subprocess(
-            cmd,
-            check_health_delay=1)
+        try:
+            self.vts_agent_process = utils.start_standing_subprocess(
+                cmd, check_health_delay=1)
+        except utils.VTSUtilsError as e:
+            logging.exception(e)
+            with open(vts_agent_log_path, 'r') as log_file:
+                logging.error("VTS agent output:\n")
+                logging.error(log_file.read())
+            raise
 
     def stopVtsAgent(self):
         """Stop the HAL agent running on the AndroidDevice.