Make run_stress.py script an entry point

With change f8b816af07 we started
packaging binaries using pbr entry points. The run_stress.py script
previously lived in tempest.stress, howver since it is intended to be
run as a binary the proper place for it is now tempest.cmd and using
an entry-point it will be easier to run it outside of the tempest
tree.

Change-Id: I96b2c7915875f4f9d7869b8728bf2c6f6ccbeec9

setup.cfg

@@ -21,6 +21,7 @@ classifier =
 console_scripts =
     verify-tempest-config = tempest.cmd.verify_tempest_config:main
     javelin2 = tempest.cmd.javelin:main
+    run-tempest-stress = tempest.cmd.run_stress:main
 
 [build_sphinx]
 all_files = 1

tempest/cmd/run_stress.py

@@ -70,7 +70,29 @@ def discover_stress_tests(path="./", filter_attr=None, call_inherited=False):
     return tests
 
 
-def main(ns):
+parser = argparse.ArgumentParser(description='Run stress tests')
+parser.add_argument('-d', '--duration', default=300, type=int,
+                    help="Duration of test in secs")
+parser.add_argument('-s', '--serial', action='store_true',
+                    help="Trigger running tests serially")
+parser.add_argument('-S', '--stop', action='store_true',
+                    default=False, help="Stop on first error")
+parser.add_argument('-n', '--number', type=int,
+                    help="How often an action is executed for each process")
+group = parser.add_mutually_exclusive_group(required=True)
+group.add_argument('-a', '--all', action='store_true',
+                   help="Execute all stress tests")
+parser.add_argument('-T', '--type',
+                    help="Filters tests of a certain type (e.g. gate)")
+parser.add_argument('-i', '--call-inherited', action='store_true',
+                    default=False,
+                    help="Call also inherited function with stress attribute")
+group.add_argument('-t', "--tests", nargs='?',
+                   help="Name of the file with test description")
+
+
+def main():
+    ns = parser.parse_args()
     result = 0
     if not ns.all:
         tests = json.load(open(ns.tests, 'r'))
@@ -97,29 +119,9 @@ def main(ns):
     return result
 
 
-parser = argparse.ArgumentParser(description='Run stress tests')
-parser.add_argument('-d', '--duration', default=300, type=int,
-                    help="Duration of test in secs")
-parser.add_argument('-s', '--serial', action='store_true',
-                    help="Trigger running tests serially")
-parser.add_argument('-S', '--stop', action='store_true',
-                    default=False, help="Stop on first error")
-parser.add_argument('-n', '--number', type=int,
-                    help="How often an action is executed for each process")
-group = parser.add_mutually_exclusive_group(required=True)
-group.add_argument('-a', '--all', action='store_true',
-                   help="Execute all stress tests")
-parser.add_argument('-T', '--type',
-                    help="Filters tests of a certain type (e.g. gate)")
-parser.add_argument('-i', '--call-inherited', action='store_true',
-                    default=False,
-                    help="Call also inherited function with stress attribute")
-group.add_argument('-t', "--tests", nargs='?',
-                   help="Name of the file with test description")
-
 if __name__ == "__main__":
     try:
-        sys.exit(main(parser.parse_args()))
+        sys.exit(main())
     except Exception:
         LOG.exception("Failure in the stress test framework")
         sys.exit(1)

tempest/stress/README.rst

@@ -34,14 +34,14 @@ test suite. All test flag with the `@stresstest` decorator will be executed.
 In order to use this discovery you have to be in the tempest root directory
 and execute the following:
 
-	tempest/stress/run_stress.py -a -d 30
+	run-tempest-stress -a -d 30
 
 Running the sample test
 -----------------------
 
-To test installation, do the following (from the tempest/stress directory):
+To test installation, do the following:
 
-	./run_stress.py -t etc/server-create-destroy-test.json -d 30
+	run-tempest-stress -t tempest/stress/etc/server-create-destroy-test.json -d 30
 
 This sample test tries to create a few VMs and kill a few VMs.
 

tempest/tests/stress/test_stress.py

@@ -51,5 +51,5 @@ class StressFrameworkTest(tempest.test.BaseTestCase):
         return proc.returncode
 
     def test_help_function(self):
-        result = self._cmd("python", "-m tempest.stress.run_stress -h")
+        result = self._cmd("python", "-m tempest.cmd.run_stress -h")
         self.assertEqual(0, result)

tox.ini

@@ -77,7 +77,7 @@ commands =
 [testenv:stress]
 sitepackages = True
 commands =
-    python -m tempest/stress/run_stress -a -d 3600 -S
+    run-tempest-stress -a -d 3600 -S
 
 [testenv:venv]
 commands = {posargs}