simplify running of interop tests on jenkins
diff --git a/tools/run_tests/run_interop_tests.py b/tools/run_tests/run_interop_tests.py
new file mode 100755
index 0000000..2441077
--- /dev/null
+++ b/tools/run_tests/run_interop_tests.py
@@ -0,0 +1,78 @@
+#!/usr/bin/env python
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+# * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Run interop (cross-language) tests in parallel."""
+
+import argparse
+import itertools
+import xml.etree.cElementTree as ET
+import jobset
+
+# TODO(jtattermusch): add php and python once we get them working
+_LANGUAGES = ['c++', 'node', 'csharp', 'ruby']
+
+# TODO(jtattermusch): add empty_stream once C++ start supporting it.
+# TODO(jtattermusch): add support for auth tests.
+_TEST_CASES = ['large_unary', 'empty_unary', 'ping_pong',
+ 'client_streaming', 'server_streaming',
+ 'cancel_after_begin', 'cancel_after_first_response',
+ 'timeout_on_sleeping_server']
+
+argp = argparse.ArgumentParser(description='Run interop tests.')
+argp.add_argument('-l', '--language',
+ choices=['all'] + sorted(_LANGUAGES),
+ nargs='+',
+ default=['all'])
+args = argp.parse_args()
+
+languages = [l for l in itertools.chain.from_iterable(
+ iter(_LANGUAGES) if x == 'all' else [x]
+ for x in args.language)]
+
+jobs = []
+jobNumber = 0
+for language in languages:
+ for test in _TEST_CASES:
+ test_job = jobset.JobSpec(
+ cmdline=['tools/run_tests/run_interop_test.sh', '%s' % language, '%s' % test],
+ shortname="cloud_to_prod:%s:%s" % (language, test),
+ timeout_seconds=60)
+ jobs.append(test_job)
+ jobNumber+=1
+
+root = ET.Element('testsuites')
+testsuite = ET.SubElement(root, 'testsuite', id='1', package='grpc', name='tests')
+
+jobset.run(jobs, maxjobs=jobNumber, xml_report=testsuite)
+
+tree = ET.ElementTree(root)
+tree.write('report.xml', encoding='UTF-8')
+
+