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Viewing changes to bzrlib/tests/blackbox/test_serve.py

  • Committer: Patch Queue Manager
  • Date: 2012-03-15 12:54:09 UTC
  • mfrom: (6505.1.1 trunk)
  • Revision ID: pqm@pqm.ubuntu.com-20120315125409-1kihxmzcxrv55b12
(vila) Open 2.6b2 (Vincent Ladeuil)

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bzrlib/tests/blackbox/test_serve.py
1
 
# Copyright (C) 2006-2010 Canonical Ltd
 
1
# Copyright (C) 2006-2011 Canonical Ltd
2
2
#
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3
# This program is free software; you can redistribute it and/or modify
4
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# it under the terms of the GNU General Public License as published by
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"""Tests of the bzr serve command."""
19
19
 
20
20
import os
21
 
import os.path
22
21
import signal
23
 
import subprocess
24
22
import sys
25
23
import thread
26
24
import threading
27
25
 
28
26
from bzrlib import (
29
27
    builtins,
30
 
    debug,
 
28
    config,
31
29
    errors,
32
30
    osutils,
33
31
    revision as _mod_revision,
 
32
    trace,
34
33
    transport,
35
34
    urlutils,
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35
    )
37
36
from bzrlib.branch import Branch
38
 
from bzrlib.bzrdir import BzrDir
 
37
from bzrlib.controldir import ControlDir
39
38
from bzrlib.smart import client, medium
40
 
from bzrlib.smart.server import BzrServerFactory, SmartTCPServer
 
39
from bzrlib.smart.server import (
 
40
    BzrServerFactory,
 
41
    SmartTCPServer,
 
42
    )
41
43
from bzrlib.tests import (
42
44
    TestCaseWithMemoryTransport,
43
45
    TestCaseWithTransport,
44
 
    TestSkipped,
45
46
    )
46
 
from bzrlib.trace import mutter
47
47
from bzrlib.transport import remote
48
48
 
49
49
 
53
53
                                *func_args, **func_kwargs):
54
54
        """Run 'bzr serve', and run the given func in a thread once the server
55
55
        has started.
56
 
        
 
56
 
57
57
        When 'func' terminates, the server will be terminated too.
58
 
        
 
58
 
59
59
        Returns stdout and stderr.
60
60
        """
61
 
        # install hook
62
 
        def on_server_start(backing_urls, tcp_server):
63
 
            t = threading.Thread(
64
 
                target=on_server_start_thread, args=(tcp_server,))
65
 
            t.start()
66
61
        def on_server_start_thread(tcp_server):
 
62
            """This runs concurrently with the server thread.
 
63
 
 
64
            The server is interrupted as soon as ``func`` finishes, even if an
 
65
            exception is encountered.
 
66
            """
67
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            try:
68
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                # Run func if set
69
69
                self.tcp_server = tcp_server
70
 
                if not func is None:
 
70
                if func is not None:
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                    try:
72
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                        func(*func_args, **func_kwargs)
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                    except Exception, e:
74
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                        # Log errors to make some test failures a little less
75
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                        # mysterious.
76
 
                        mutter('func broke: %r', e)
 
76
                        trace.mutter('func broke: %r', e)
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            finally:
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                # Then stop the server
79
 
                mutter('interrupting...')
 
79
                trace.mutter('interrupting...')
80
80
                thread.interrupt_main()
 
81
        # When the hook is fired, it just starts ``on_server_start_thread`` and
 
82
        # return
 
83
        def on_server_start(backing_urls, tcp_server):
 
84
            t = threading.Thread(
 
85
                target=on_server_start_thread, args=(tcp_server,))
 
86
            t.start()
 
87
        # install hook
81
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        SmartTCPServer.hooks.install_named_hook(
82
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            'server_started_ex', on_server_start,
83
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            'run_bzr_serve_then_func hook')
 
91
        # It seesm thread.interrupt_main() will not raise KeyboardInterrupt
 
92
        # until after socket.accept returns. So we set the timeout low to make
 
93
        # the test faster.
 
94
        self.overrideAttr(SmartTCPServer, '_ACCEPT_TIMEOUT', 0.1)
84
95
        # start a TCP server
85
96
        try:
86
 
            out, err = self.run_bzr(['serve'] + list(serve_args))
 
97
            out, err = self.run_bzr(['serve'] + list(serve_args),
 
98
                                    retcode=retcode)
87
99
        except KeyboardInterrupt, e:
88
100
            out, err = e.args
89
101
        return out, err
95
107
        super(TestBzrServe, self).setUp()
96
108
        self.disable_missing_extensions_warning()
97
109
 
 
110
    def test_server_exception_with_hook(self):
 
111
        """Catch exception from the server in the server_exception hook.
 
112
 
 
113
        We use ``run_bzr_serve_then_func`` without a ``func`` so the server
 
114
        will receive a KeyboardInterrupt exception we want to catch.
 
115
        """
 
116
        def hook(exception):
 
117
            if exception[0] is KeyboardInterrupt:
 
118
                sys.stderr.write('catching KeyboardInterrupt\n')
 
119
                return True
 
120
            else:
 
121
                return False
 
122
        SmartTCPServer.hooks.install_named_hook(
 
123
            'server_exception', hook,
 
124
            'test_server_except_hook hook')
 
125
        args = ['--listen', 'localhost', '--port', '0', '--quiet']
 
126
        out, err = self.run_bzr_serve_then_func(args, retcode=0)
 
127
        self.assertEqual('catching KeyboardInterrupt\n', err)
 
128
 
 
129
    def test_server_exception_no_hook(self):
 
130
        """test exception without hook returns error"""
 
131
        args = []
 
132
        out, err = self.run_bzr_serve_then_func(args, retcode=3)
 
133
 
98
134
    def assertInetServerShutsdownCleanly(self, process):
99
135
        """Shutdown the server process looking for errors."""
100
136
        # Shutdown the server: the server should shut down when it cannot read
154
190
            finish_bzr_subprocess, and the base url for the server.
155
191
        """
156
192
        # Serve from the current directory
157
 
        args = ['serve', '--port', 'localhost:0']
 
193
        args = ['serve', '--listen', 'localhost', '--port', '0']
158
194
        args.extend(extra_options)
159
195
        process = self.start_bzr_subprocess(args, skip_if_plan_to_signal=True)
160
196
        port_line = process.stderr.readline()
164
200
        url = 'bzr://localhost:%d/' % port
165
201
        self.permit_url(url)
166
202
        return process, url
167
 
    
 
203
 
168
204
    def test_bzr_serve_quiet(self):
169
205
        self.make_branch('.')
170
 
        args = ['--port', 'localhost:0', '--quiet']
 
206
        args = ['--listen', 'localhost', '--port', '0', '--quiet']
171
207
        out, err = self.run_bzr_serve_then_func(args, retcode=3)
172
208
        self.assertEqual('', out)
173
209
        self.assertEqual('', err)
185
221
        process, transport = self.start_server_inet(['--allow-writes'])
186
222
 
187
223
        # We get a working branch, and can create a directory
188
 
        branch = BzrDir.open_from_transport(transport).open_branch()
 
224
        branch = ControlDir.open_from_transport(transport).open_branch()
189
225
        self.make_read_requests(branch)
190
226
        transport.mkdir('adir')
191
227
        self.assertInetServerShutsdownCleanly(process)
193
229
    def test_bzr_serve_port_readonly(self):
194
230
        """bzr server should provide a read only filesystem by default."""
195
231
        process, url = self.start_server_port()
196
 
        t = transport.get_transport(url)
 
232
        t = transport.get_transport_from_url(url)
197
233
        self.assertRaises(errors.TransportNotPossible, t.mkdir, 'adir')
198
234
        self.assertServerFinishesCleanly(process)
199
235
 
225
261
        # -Dhpss, and does drop some hpss logging to the file.
226
262
        self.make_branch('.')
227
263
        log_fname = os.getcwd() + '/server.log'
228
 
        self._captureVar('BZR_LOG', log_fname)
 
264
        self.overrideEnv('BZR_LOG', log_fname)
229
265
        process, transport = self.start_server_inet(['-Dhpss'])
230
 
        branch = BzrDir.open_from_transport(transport).open_branch()
 
266
        branch = ControlDir.open_from_transport(transport).open_branch()
231
267
        self.make_read_requests(branch)
232
268
        self.assertInetServerShutsdownCleanly(process)
233
269
        f = open(log_fname, 'rb')
235
271
        f.close()
236
272
        self.assertContainsRe(content, r'hpss request: \[[0-9-]+\]')
237
273
 
 
274
    def test_bzr_serve_supports_configurable_timeout(self):
 
275
        gs = config.GlobalStack()
 
276
        gs.set('serve.client_timeout', 0.2)
 
277
        process, url = self.start_server_port()
 
278
        self.build_tree_contents([('a_file', 'contents\n')])
 
279
        # We can connect and issue a request
 
280
        t = transport.get_transport_from_url(url)
 
281
        self.assertEqual('contents\n', t.get_bytes('a_file'))
 
282
        # However, if we just wait for more content from the server, it will
 
283
        # eventually disconnect us.
 
284
        # TODO: Use something like signal.alarm() so that if the server doesn't
 
285
        #       properly handle the timeout, we end up failing the test instead
 
286
        #       of hanging forever.
 
287
        m = t.get_smart_medium()
 
288
        m.read_bytes(1)
 
289
        # Now, we wait for timeout to trigger
 
290
        err = process.stderr.readline()
 
291
        self.assertEqual(
 
292
            'Connection Timeout: disconnecting client after 0.2 seconds\n',
 
293
            err)
 
294
        self.assertServerFinishesCleanly(process)
 
295
 
 
296
    def test_bzr_serve_supports_client_timeout(self):
 
297
        process, url = self.start_server_port(['--client-timeout=0.1'])
 
298
        self.build_tree_contents([('a_file', 'contents\n')])
 
299
        # We can connect and issue a request
 
300
        t = transport.get_transport_from_url(url)
 
301
        self.assertEqual('contents\n', t.get_bytes('a_file'))
 
302
        # However, if we just wait for more content from the server, it will
 
303
        # eventually disconnect us.
 
304
        # TODO: Use something like signal.alarm() so that if the server doesn't
 
305
        #       properly handle the timeout, we end up failing the test instead
 
306
        #       of hanging forever.
 
307
        m = t.get_smart_medium()
 
308
        m.read_bytes(1)
 
309
        # Now, we wait for timeout to trigger
 
310
        err = process.stderr.readline()
 
311
        self.assertEqual(
 
312
            'Connection Timeout: disconnecting client after 0.1 seconds\n',
 
313
            err)
 
314
        self.assertServerFinishesCleanly(process)
 
315
 
 
316
    def test_bzr_serve_graceful_shutdown(self):
 
317
        big_contents = 'a'*64*1024
 
318
        self.build_tree_contents([('bigfile', big_contents)])
 
319
        process, url = self.start_server_port(['--client-timeout=1.0'])
 
320
        t = transport.get_transport_from_url(url)
 
321
        m = t.get_smart_medium()
 
322
        c = client._SmartClient(m)
 
323
        # Start, but don't finish a response
 
324
        resp, response_handler = c.call_expecting_body('get', 'bigfile')
 
325
        self.assertEqual(('ok',), resp)
 
326
        # Note: process.send_signal is a Python 2.6ism
 
327
        process.send_signal(signal.SIGHUP)
 
328
        # Wait for the server to notice the signal, and then read the actual
 
329
        # body of the response. That way we know that it is waiting for the
 
330
        # request to finish
 
331
        self.assertEqual('Requested to stop gracefully\n',
 
332
                         process.stderr.readline())
 
333
        self.assertEqual('Waiting for 1 client(s) to finish\n',
 
334
                         process.stderr.readline())
 
335
        body = response_handler.read_body_bytes()
 
336
        if body != big_contents:
 
337
            self.fail('Failed to properly read the contents of "bigfile"')
 
338
        # Now that our request is finished, the medium should notice it has
 
339
        # been disconnected.
 
340
        self.assertEqual('', m.read_bytes(1))
 
341
        # And the server should be stopping
 
342
        self.assertEqual(0, process.wait())
 
343
 
238
344
 
239
345
class TestCmdServeChrooting(TestBzrServeBase):
240
346
 
248
354
        t = self.get_transport()
249
355
        t.mkdir('server-root')
250
356
        self.run_bzr_serve_then_func(
251
 
            ['--port', '127.0.0.1:0',
 
357
            ['--listen', 'localhost', '--port', '0',
252
358
             '--directory', t.local_abspath('server-root'),
253
359
             '--allow-writes'],
254
360
            func=self.when_server_started)
276
382
 
277
383
class TestUserdirExpansion(TestCaseWithMemoryTransport):
278
384
 
279
 
    def fake_expanduser(self, path):
 
385
    @staticmethod
 
386
    def fake_expanduser(path):
280
387
        """A simple, environment-independent, function for the duration of this
281
388
        test.
282
389
 
295
402
            self.fake_expanduser, lambda t: base_path)
296
403
        mem_transport = self.get_transport()
297
404
        mem_transport.mkdir_multi(['home', 'home/user'])
298
 
        bzr_server.set_up(mem_transport, None, None, inet=True)
 
405
        bzr_server.set_up(mem_transport, None, None, inet=True, timeout=4.0)
299
406
        self.addCleanup(bzr_server.tear_down)
300
407
        return bzr_server
301
408
 
317
424
        base_url = urlutils.local_path_to_url(base_dir) + '/'
318
425
        # Define a fake 'protocol' to capture the transport that cmd_serve
319
426
        # passes to serve_bzr.
320
 
        def capture_transport(transport, host, port, inet):
 
427
        def capture_transport(transport, host, port, inet, timeout):
321
428
            self.bzr_serve_transport = transport
322
429
        cmd = builtins.cmd_serve()
323
430
        # Read-only
334
441
        self.assertEqual(base_url, self.bzr_serve_transport.base)
335
442
        self.assertEqual(base_dir,
336
443
            server_maker.get_base_path(self.bzr_serve_transport))
337
 
 
 
444
        # Read-only, from a URL
 
445
        cmd.run(directory=base_url, protocol=capture_transport)
 
446
        server_maker = BzrServerFactory()
 
447
        self.assertEqual(
 
448
            'readonly+%s' % base_url, self.bzr_serve_transport.base)
 
449
        self.assertEqual(
 
450
            base_dir, server_maker.get_base_path(self.bzr_serve_transport))