1
# Copyright (C) 2006-2011 Canonical Ltd
3
# This program is free software; you can redistribute it and/or modify
4
# it under the terms of the GNU General Public License as published by
5
# the Free Software Foundation; either version 2 of the License, or
6
# (at your option) any later version.
8
# This program is distributed in the hope that it will be useful,
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11
# GNU General Public License for more details.
13
# You should have received a copy of the GNU General Public License
14
# along with this program; if not, write to the Free Software
15
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18
"""Tests of the brz serve command."""
24
from _thread import interrupt_main
25
except ImportError: # Python < 3
26
from thread import interrupt_main
35
revision as _mod_revision,
40
from ...branch import Branch
41
from ...controldir import ControlDir
42
from ...bzr.smart import client, medium
43
from ...bzr.smart.server import (
48
TestCaseWithMemoryTransport,
49
TestCaseWithTransport,
51
from ...transport import remote
54
class TestBzrServeBase(TestCaseWithTransport):
56
def run_bzr_serve_then_func(self, serve_args, retcode=0, func=None,
57
*func_args, **func_kwargs):
58
"""Run 'brz serve', and run the given func in a thread once the server
61
When 'func' terminates, the server will be terminated too.
63
Returns stdout and stderr.
65
def on_server_start_thread(tcp_server):
66
"""This runs concurrently with the server thread.
68
The server is interrupted as soon as ``func`` finishes, even if an
69
exception is encountered.
73
self.tcp_server = tcp_server
76
func(*func_args, **func_kwargs)
77
except Exception as e:
78
# Log errors to make some test failures a little less
80
trace.mutter('func broke: %r', e)
82
# Then stop the server
83
trace.mutter('interrupting...')
85
# When the hook is fired, it just starts ``on_server_start_thread`` and
87
def on_server_start(backing_urls, tcp_server):
89
target=on_server_start_thread, args=(tcp_server,))
92
SmartTCPServer.hooks.install_named_hook(
93
'server_started_ex', on_server_start,
94
'run_bzr_serve_then_func hook')
95
# It seems interrupt_main() will not raise KeyboardInterrupt
96
# until after socket.accept returns. So we set the timeout low to make
98
self.overrideAttr(SmartTCPServer, '_ACCEPT_TIMEOUT', 0.1)
101
out, err = self.run_bzr(['serve'] + list(serve_args),
103
except KeyboardInterrupt as e:
104
return (self._last_cmd_stdout.getvalue(),
105
self._last_cmd_stderr.getvalue())
109
class TestBzrServe(TestBzrServeBase):
112
super(TestBzrServe, self).setUp()
113
self.disable_missing_extensions_warning()
115
def test_server_exception_with_hook(self):
116
"""Catch exception from the server in the server_exception hook.
118
We use ``run_bzr_serve_then_func`` without a ``func`` so the server
119
will receive a KeyboardInterrupt exception we want to catch.
122
if exception[0] is KeyboardInterrupt:
123
sys.stderr.write(b'catching KeyboardInterrupt\n')
127
SmartTCPServer.hooks.install_named_hook(
128
'server_exception', hook,
129
'test_server_except_hook hook')
130
args = ['--listen', 'localhost', '--port', '0', '--quiet']
131
out, err = self.run_bzr_serve_then_func(args, retcode=0)
132
self.assertEqual('catching KeyboardInterrupt\n', err)
134
def test_server_exception_no_hook(self):
135
"""test exception without hook returns error"""
137
out, err = self.run_bzr_serve_then_func(args, retcode=3)
139
def assertInetServerShutsdownCleanly(self, process):
140
"""Shutdown the server process looking for errors."""
141
# Shutdown the server: the server should shut down when it cannot read
142
# from stdin anymore.
143
process.stdin.close()
144
# Hide stdin from the subprocess module, so it won't fail to close it.
146
result = self.finish_bzr_subprocess(process)
147
self.assertEqual(b'', result[0])
148
self.assertEqual(b'', result[1])
150
def assertServerFinishesCleanly(self, process):
151
"""Shutdown the brz serve instance process looking for errors."""
152
# Shutdown the server
153
result = self.finish_bzr_subprocess(process, retcode=3,
154
send_signal=signal.SIGINT)
155
self.assertEqual(b'', result[0])
156
self.assertEqual(b'brz: interrupted\n', result[1])
158
def make_read_requests(self, branch):
159
"""Do some read only requests."""
160
with branch.lock_read():
161
branch.repository.all_revision_ids()
162
self.assertEqual(_mod_revision.NULL_REVISION,
163
_mod_revision.ensure_null(branch.last_revision()))
165
def start_server_inet(self, extra_options=()):
166
"""Start a brz server subprocess using the --inet option.
168
:param extra_options: extra options to give the server.
169
:return: a tuple with the brz process handle for passing to
170
finish_bzr_subprocess, a client for the server, and a transport.
172
# Serve from the current directory
173
args = ['serve', '--inet']
174
args.extend(extra_options)
175
process = self.start_bzr_subprocess(args)
177
# Connect to the server
178
# We use this url because while this is no valid URL to connect to this
179
# server instance, the transport needs a URL.
180
url = 'bzr://localhost/'
182
client_medium = medium.SmartSimplePipesClientMedium(
183
process.stdout, process.stdin, url)
184
transport = remote.RemoteTransport(url, medium=client_medium)
185
return process, transport
187
def start_server_port(self, extra_options=()):
188
"""Start a brz server subprocess.
190
:param extra_options: extra options to give the server.
191
:return: a tuple with the brz process handle for passing to
192
finish_bzr_subprocess, and the base url for the server.
194
# Serve from the current directory
195
args = ['serve', '--listen', 'localhost', '--port', '0']
196
args.extend(extra_options)
197
process = self.start_bzr_subprocess(args, skip_if_plan_to_signal=True)
198
port_line = process.stderr.readline()
199
prefix = b'listening on port: '
200
self.assertStartsWith(port_line, prefix)
201
port = int(port_line[len(prefix):])
202
url = 'bzr://localhost:%d/' % port
206
def test_bzr_serve_quiet(self):
207
self.make_branch('.')
208
args = ['--listen', 'localhost', '--port', '0', '--quiet']
209
out, err = self.run_bzr_serve_then_func(args, retcode=3)
210
self.assertEqual('', out)
211
self.assertEqual('', err)
213
def test_bzr_serve_inet_readonly(self):
214
"""brz server should provide a read only filesystem by default."""
215
process, transport = self.start_server_inet()
216
self.assertRaises(errors.TransportNotPossible, transport.mkdir, 'adir')
217
self.assertInetServerShutsdownCleanly(process)
219
def test_bzr_serve_inet_readwrite(self):
221
self.make_branch('.')
223
process, transport = self.start_server_inet(['--allow-writes'])
225
# We get a working branch, and can create a directory
226
branch = ControlDir.open_from_transport(transport).open_branch()
227
self.make_read_requests(branch)
228
transport.mkdir('adir')
229
self.assertInetServerShutsdownCleanly(process)
231
def test_bzr_serve_port_readonly(self):
232
"""brz server should provide a read only filesystem by default."""
233
process, url = self.start_server_port()
234
t = transport.get_transport_from_url(url)
235
self.assertRaises(errors.TransportNotPossible, t.mkdir, 'adir')
236
self.assertServerFinishesCleanly(process)
238
def test_bzr_serve_port_readwrite(self):
240
self.make_branch('.')
242
process, url = self.start_server_port(['--allow-writes'])
244
# Connect to the server
245
branch = Branch.open(url)
246
self.make_read_requests(branch)
247
self.assertServerFinishesCleanly(process)
249
def test_bzr_serve_supports_protocol(self):
251
self.make_branch('.')
253
process, url = self.start_server_port(['--allow-writes',
256
# Connect to the server
257
branch = Branch.open(url)
258
self.make_read_requests(branch)
259
self.assertServerFinishesCleanly(process)
261
def test_bzr_serve_dhpss(self):
262
# This is a smoke test that the server doesn't crash when run with
263
# -Dhpss, and does drop some hpss logging to the file.
264
self.make_branch('.')
265
log_fname = self.test_dir + '/server.log'
266
self.overrideEnv('BRZ_LOG', log_fname)
267
process, transport = self.start_server_inet(['-Dhpss'])
268
branch = ControlDir.open_from_transport(transport).open_branch()
269
self.make_read_requests(branch)
270
self.assertInetServerShutsdownCleanly(process)
271
f = open(log_fname, 'rb')
274
self.assertContainsRe(content, br'hpss request: \[[0-9-]+\]')
276
def test_bzr_serve_supports_configurable_timeout(self):
277
gs = config.GlobalStack()
278
gs.set('serve.client_timeout', 0.2)
279
# Save the config as the subprocess will use it
281
process, url = self.start_server_port()
282
self.build_tree_contents([('a_file', b'contents\n')])
283
# We can connect and issue a request
284
t = transport.get_transport_from_url(url)
285
self.assertEqual(b'contents\n', t.get_bytes('a_file'))
286
# However, if we just wait for more content from the server, it will
287
# eventually disconnect us.
288
m = t.get_smart_medium()
290
# Now, we wait for timeout to trigger
291
err = process.stderr.readline()
293
b'Connection Timeout: disconnecting client after 0.2 seconds\n',
295
self.assertServerFinishesCleanly(process)
297
def test_bzr_serve_supports_client_timeout(self):
298
process, url = self.start_server_port(['--client-timeout=0.1'])
299
self.build_tree_contents([('a_file', b'contents\n')])
300
# We can connect and issue a request
301
t = transport.get_transport_from_url(url)
302
self.assertEqual(b'contents\n', t.get_bytes('a_file'))
303
# However, if we just wait for more content from the server, it will
304
# eventually disconnect us.
305
# TODO: Use something like signal.alarm() so that if the server doesn't
306
# properly handle the timeout, we end up failing the test instead
307
# of hanging forever.
308
m = t.get_smart_medium()
310
# Now, we wait for timeout to trigger
311
err = process.stderr.readline()
313
b'Connection Timeout: disconnecting client after 0.1 seconds\n',
315
self.assertServerFinishesCleanly(process)
317
def test_bzr_serve_graceful_shutdown(self):
318
big_contents = b'a'*64*1024
319
self.build_tree_contents([('bigfile', big_contents)])
320
process, url = self.start_server_port(['--client-timeout=1.0'])
321
t = transport.get_transport_from_url(url)
322
m = t.get_smart_medium()
323
c = client._SmartClient(m)
324
# Start, but don't finish a response
325
resp, response_handler = c.call_expecting_body('get', 'bigfile')
326
self.assertEqual((b'ok',), resp)
327
# Note: process.send_signal is a Python 2.6ism
328
process.send_signal(signal.SIGHUP)
329
# Wait for the server to notice the signal, and then read the actual
330
# body of the response. That way we know that it is waiting for the
332
self.assertEqual(b'Requested to stop gracefully\n',
333
process.stderr.readline())
334
self.assertEqual(b'Waiting for 1 client(s) to finish\n',
335
process.stderr.readline())
336
body = response_handler.read_body_bytes()
337
if body != big_contents:
338
self.fail('Failed to properly read the contents of "bigfile"')
339
# Now that our request is finished, the medium should notice it has
341
self.assertEqual(b'', m.read_bytes(1))
342
# And the server should be stopping
343
self.assertEqual(0, process.wait())
346
class TestCmdServeChrooting(TestBzrServeBase):
348
def test_serve_tcp(self):
349
"""'brz serve' wraps the given --directory in a ChrootServer.
351
So requests that search up through the parent directories (like
352
find_repositoryV3) will give "not found" responses, rather than
353
InvalidURLJoin or jail break errors.
355
t = self.get_transport()
356
t.mkdir('server-root')
357
self.run_bzr_serve_then_func(
358
['--listen', '127.0.0.1', '--port', '0',
359
'--directory', t.local_abspath('server-root'),
361
func=self.when_server_started)
362
# The when_server_started method issued a find_repositoryV3 that should
363
# fail with 'norepository' because there are no repositories inside the
365
self.assertEqual((b'norepository',), self.client_resp)
367
def when_server_started(self):
368
# Connect to the TCP server and issue some requests and see what comes
370
client_medium = medium.SmartTCPClientMedium(
371
'127.0.0.1', self.tcp_server.port,
372
'bzr://localhost:%d/' % (self.tcp_server.port,))
373
smart_client = client._SmartClient(client_medium)
374
resp = smart_client.call('mkdir', 'foo', '')
375
resp = smart_client.call('BzrDirFormat.initialize', 'foo/')
377
resp = smart_client.call('BzrDir.find_repositoryV3', 'foo/')
378
except errors.ErrorFromSmartServer as e:
380
self.client_resp = resp
381
client_medium.disconnect()
384
class TestUserdirExpansion(TestCaseWithMemoryTransport):
387
def fake_expanduser(path):
388
"""A simple, environment-independent, function for the duration of this
391
Paths starting with a path segment of '~user' will expand to start with
392
'/home/user/'. Every other path will be unchanged.
394
if path.split('/', 1)[0] == '~user':
395
return '/home/user' + path[len('~user'):]
398
def make_test_server(self, base_path='/'):
399
"""Make and start a BzrServerFactory, backed by a memory transport, and
400
creat '/home/user' in that transport.
402
bzr_server = BzrServerFactory(
403
self.fake_expanduser, lambda t: base_path)
404
mem_transport = self.get_transport()
405
mem_transport.mkdir('home')
406
mem_transport.mkdir('home/user')
407
bzr_server.set_up(mem_transport, None, None, inet=True, timeout=4.0)
408
self.addCleanup(bzr_server.tear_down)
411
def test_bzr_serve_expands_userdir(self):
412
bzr_server = self.make_test_server()
413
self.assertTrue(bzr_server.smart_server.backing_transport.has('~user'))
415
def test_bzr_serve_does_not_expand_userdir_outside_base(self):
416
bzr_server = self.make_test_server('/foo')
417
self.assertFalse(bzr_server.smart_server.backing_transport.has('~user'))
419
def test_get_base_path(self):
420
"""cmd_serve will turn the --directory option into a LocalTransport
421
(optionally decorated with 'readonly+'). BzrServerFactory can
422
determine the original --directory from that transport.
424
# URLs always include the trailing slash, and get_base_path returns it
425
base_dir = osutils.abspath('/a/b/c') + '/'
426
base_url = urlutils.local_path_to_url(base_dir) + '/'
427
# Define a fake 'protocol' to capture the transport that cmd_serve
428
# passes to serve_bzr.
429
def capture_transport(transport, host, port, inet, timeout):
430
self.bzr_serve_transport = transport
431
cmd = builtins.cmd_serve()
433
cmd.run(directory=base_dir, protocol=capture_transport)
434
server_maker = BzrServerFactory()
436
'readonly+%s' % base_url, self.bzr_serve_transport.base)
438
base_dir, server_maker.get_base_path(self.bzr_serve_transport))
440
cmd.run(directory=base_dir, protocol=capture_transport,
442
server_maker = BzrServerFactory()
443
self.assertEqual(base_url, self.bzr_serve_transport.base)
444
self.assertEqual(base_dir,
445
server_maker.get_base_path(self.bzr_serve_transport))
446
# Read-only, from a URL
447
cmd.run(directory=base_url, protocol=capture_transport)
448
server_maker = BzrServerFactory()
450
'readonly+%s' % base_url, self.bzr_serve_transport.base)
452
base_dir, server_maker.get_base_path(self.bzr_serve_transport))