Option to redirect stderr output to a file for Tempest test

The output when we run Tempest from CI is too long
if there are many tests failing. This patch intends to
show only the test cases that passed/failed within a table.
If troubleshooting is needed, it will be a log file with all
the stderr in it.

Change-Id: If5b0f35463a3dae06a0c177de4dc473bfc4687c5
Signed-off-by: jose.lausuch <jose.lausuch@ericsson.com>

1 files changed, 19 insertions, 1 deletions

diff --git a/testcases/VIM/OpenStack/CI/libraries/run_tempest.py b/testcases/VIM/OpenStack/CI/libraries/run_tempest.py
index ee0a4bea8..0097a567b 100644
--- a/testcases/VIM/OpenStack/CI/libraries/run_tempest.py
+++ b/testcases/VIM/OpenStack/CI/libraries/run_tempest.py
@@ -73,6 +73,8 @@ USER_NAME = functest_yaml.get("tempest").get("identity").get("user_name")
 USER_PASSWORD = functest_yaml.get("tempest").get("identity").get("user_password")
 DEPLOYMENT_MAME = functest_yaml.get("rally").get("deployment_name")
 RALLY_INSTALLATION_DIR = functest_yaml.get("general").get("directories").get("dir_rally_inst")
+RESULTS_DIR = functest_yaml.get("general").get("directories").get("dir_results")
+TEMPEST_RESULTS_DIR = RESULTS_DIR + '/tempest'
 
 
 def get_info(file_result):
@@ -211,7 +213,23 @@ def run_tempest(OPTION):
     logger.info("Starting Tempest test suite: '%s'." % OPTION)
     cmd_line = "rally verify start "+OPTION
     logger.debug('Executing command : {}'.format(cmd_line))
-    subprocess.call(cmd_line, shell=True, stderr=subprocess.STDOUT)
+
+    CI_DEBUG = os.environ.get("CI_DEBUG")
+    if CI_DEBUG == "true" or CI_DEBUG == "True":
+        subprocess.call(cmd_line, shell=True, stderr=subprocess.STDOUT)
+    else:
+        if not os.path.exists(TEMPEST_RESULTS_DIR):
+            os.makedirs(TEMPEST_RESULTS_DIR)
+
+        f = open(TEMPEST_RESULTS_DIR+"/tempest.log", 'w+')
+        FNULL = open(os.devnull, 'w')
+
+        subprocess.call(cmd_line, shell=True, stdout=FNULL, stderr=f)
+        f.close()
+        FNULL.close()
+
+        cmd_line = "rally verify show"
+        subprocess.call(cmd_line, shell=True)
 
     cmd_line = "rally verify list"
     logger.debug('Executing command : {}'.format(cmd_line))