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-rw-r--r--resources/libraries/python/TrafficGenerator.py39
1 files changed, 29 insertions, 10 deletions
diff --git a/resources/libraries/python/TrafficGenerator.py b/resources/libraries/python/TrafficGenerator.py
index 127b5b1d9b..6d90fe41b7 100644
--- a/resources/libraries/python/TrafficGenerator.py
+++ b/resources/libraries/python/TrafficGenerator.py
@@ -205,16 +205,35 @@ class TrafficGenerator(object):
logger.error('trex-cfg failed: {0}'.format(stdout + stderr))
raise RuntimeError('trex-cfg failed')
- (ret, _, _) = ssh.exec_command(
- "sh -c 'pgrep t-rex && sudo pkill t-rex'")
-
- (ret, _, _) = ssh.exec_command(
- "sh -c 'cd {0}/scripts/ && "
- "sudo nohup ./t-rex-64 -i -c 7 --iom 0 > /dev/null 2>&1 &'"
- "> /dev/null"\
- .format(trex_path))
- if int(ret) != 0:
- raise RuntimeError('t-rex-64 startup failed')
+ max_startup_retries = 3
+ while max_startup_retries > 0:
+ # kill T-rex only if it is already running
+ (ret, _, _) = ssh.exec_command(
+ "sh -c 'pgrep t-rex && sudo pkill t-rex'")
+
+ # start T-rex
+ (ret, _, _) = ssh.exec_command(
+ "sh -c 'cd {0}/scripts/ && "
+ "sudo nohup ./t-rex-64 -i -c 7 --iom 0 > /dev/null 2>&1 &'"
+ "> /dev/null"\
+ .format(trex_path))
+ if int(ret) != 0:
+ raise RuntimeError('t-rex-64 startup failed')
+
+ # get T-rex server info
+ (ret, _, _) = ssh.exec_command(
+ "sh -c '{0}/resources/tools/t-rex/t-rex-server-info.py'"\
+ .format(Constants.REMOTE_FW_DIR),
+ timeout=120)
+ if int(ret) == 0:
+ # If we get info T-rex is running
+ return
+ # try again
+ max_startup_retries -= 1
+ # after max retries T-rex is still not responding to API
+ # critical error occured
+ raise RuntimeError('t-rex-64 startup failed')
+
@staticmethod
def teardown_traffic_generator(node):