Add test_server_setup.py and add support for additional flags.

build/android/pylib/host_driven/test_server.py

+# Copyright 2013 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Host driven test server controller.
+
+This class controls the startup and shutdown of a python driven test server that
+runs in a separate process.
+
+The server starts up automatically when the object is created.
+
+After it starts up, it is possible to retreive the hostname it started on
+through accessing the member field |host| and the port name through |port|.
+
+For shutting down the server, call TearDown().
+"""
+
+import subprocess
+import os
+import os.path
+
+from pylib import constants
+
+# NOTE: when adding or modifying these lines, omit any leading slashes!
+# Otherwise os.path.join() will (correctly) treat them as absolute paths
+# instead of relative paths, and will do nothing.
+_PYTHONPATH_DIRS = [
+    'net/tools/testserver/',
+    'third_party/',
+    'third_party/pyftpdlib/src/',
+    'third_party/pywebsocket/src',
+    'third_party/tlslite/',
+]
+
+# Python files in these directories are generated as part of the build.
+# These dirs are located in out/(Debug|Release) directory.
+# The correct path is determined based on the build type. E.g. out/Debug for
+# debug builds and out/Release for release builds.
+_GENERATED_PYTHONPATH_DIRS = [
+    'pyproto/sync/protocol/',
+    'pyproto/'
+]
+
+_TEST_SERVER_HOST = '127.0.0.1'
+# Paths for supported test server executables.
+TEST_NET_SERVER_PATH = 'net/tools/testserver/testserver.py'
+TEST_SYNC_SERVER_PATH = 'sync/tools/testserver/sync_testserver.py'
+
+
+class TestServer(object):
+  """Sets up a host driven test server on the host machine.
+
+  For shutting down the server, call TearDown().
+  """
+
+  def __init__(self, shard_index, test_server_port, test_server_path):
+    """Sets up a Python driven test server on the host machine.
+
+    Args:
+      shard_index: Index of the current shard.
+      test_server_port: Port to run the test server on. This is multiplexed with
+                        the shard index. To retrieve the real port access the
+                        member variable |port|.
+      test_server_path: The path (relative to the root src dir) of the server
+    """
+    self.host = _TEST_SERVER_HOST
+    self.port = test_server_port + shard_index
+
+    src_dir = constants.DIR_SOURCE_ROOT
+    # Make dirs into a list of absolute paths.
+    abs_dirs = [os.path.join(src_dir, d) for d in _PYTHONPATH_DIRS]
+    # Add the generated python files to the path
+    abs_dirs.extend([os.path.join(src_dir, 'out', constants.GetBuildType(), d)
+                     for d in _GENERATED_PYTHONPATH_DIRS])
+    current_python_path = os.environ.get('PYTHONPATH')
+    extra_python_path = ':'.join(abs_dirs)
+    if current_python_path:
+      python_path = current_python_path + ':' + extra_python_path
+    else:
+      python_path = extra_python_path
+
+    # NOTE: A separate python process is used to simplify getting the right
+    # system path for finding includes.
+    cmd = ['python', os.path.join(src_dir, test_server_path),
+           '--log-to-console',
+           ('--host=%s' % self.host),
+           ('--port=%d' % self.port)]
+    self._test_server_process = subprocess.Popen(
+          cmd, env={'PYTHONPATH': python_path})
+
+  def TearDown(self):
+    self._test_server_process.kill()