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

  • Committer: John Arbash Meinel
  • Date: 2006-09-20 14:51:03 UTC
  • mfrom: (0.8.23 version_info)
  • mto: This revision was merged to the branch mainline in revision 2028.
  • Revision ID: john@arbash-meinel.com-20060920145103-02725c6d6c886040
[merge] version-info plugin, and cleanup for layout in bzr

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1
 
# Copyright (C) 2006-2011 Canonical Ltd
 
1
# Copyright (C) 2006 by Canonical Ltd
2
2
#
3
3
# This program is free software; you can redistribute it and/or modify
4
4
# it under the terms of the GNU General Public License as published by
12
12
#
13
13
# You should have received a copy of the GNU General Public License
14
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
 
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
16
16
 
17
17
 
18
18
"""Tests of the bzr serve command."""
19
19
 
20
20
import os
21
21
import signal
22
 
import sys
23
 
import thread
 
22
import subprocess
24
23
import threading
25
24
 
26
 
from bzrlib import (
27
 
    builtins,
28
 
    errors,
29
 
    osutils,
30
 
    revision as _mod_revision,
31
 
    trace,
32
 
    transport,
33
 
    urlutils,
34
 
    )
 
25
from bzrlib import errors
35
26
from bzrlib.branch import Branch
36
27
from bzrlib.bzrdir import BzrDir
37
 
from bzrlib.smart import client, medium
38
 
from bzrlib.smart.server import (
39
 
    BzrServerFactory,
40
 
    SmartTCPServer,
41
 
    )
42
 
from bzrlib.tests import (
43
 
    TestCaseWithMemoryTransport,
44
 
    TestCaseWithTransport,
45
 
    )
46
 
from bzrlib.transport import remote
47
 
 
48
 
 
49
 
class TestBzrServeBase(TestCaseWithTransport):
50
 
 
51
 
    def run_bzr_serve_then_func(self, serve_args, retcode=0, func=None,
52
 
                                *func_args, **func_kwargs):
53
 
        """Run 'bzr serve', and run the given func in a thread once the server
54
 
        has started.
55
 
 
56
 
        When 'func' terminates, the server will be terminated too.
57
 
 
58
 
        Returns stdout and stderr.
59
 
        """
60
 
        def on_server_start_thread(tcp_server):
61
 
            """This runs concurrently with the server thread.
62
 
 
63
 
            The server is interrupted as soon as ``func`` finishes, even if an
64
 
            exception is encountered.
65
 
            """
66
 
            try:
67
 
                # Run func if set
68
 
                self.tcp_server = tcp_server
69
 
                if not func is None:
70
 
                    try:
71
 
                        func(*func_args, **func_kwargs)
72
 
                    except Exception, e:
73
 
                        # Log errors to make some test failures a little less
74
 
                        # mysterious.
75
 
                        trace.mutter('func broke: %r', e)
76
 
            finally:
77
 
                # Then stop the server
78
 
                trace.mutter('interrupting...')
79
 
                thread.interrupt_main()
80
 
        # When the hook is fired, it just starts ``on_server_start_thread`` and
81
 
        # return
82
 
        def on_server_start(backing_urls, tcp_server):
83
 
            t = threading.Thread(
84
 
                target=on_server_start_thread, args=(tcp_server,))
85
 
            t.start()
86
 
        # install hook
87
 
        SmartTCPServer.hooks.install_named_hook(
88
 
            'server_started_ex', on_server_start,
89
 
            'run_bzr_serve_then_func hook')
90
 
        # start a TCP server
91
 
        try:
92
 
            out, err = self.run_bzr(['serve'] + list(serve_args),
93
 
                                    retcode=retcode)
94
 
        except KeyboardInterrupt, e:
95
 
            out, err = e.args
96
 
        return out, err
97
 
 
98
 
 
99
 
class TestBzrServe(TestBzrServeBase):
100
 
 
101
 
    def setUp(self):
102
 
        super(TestBzrServe, self).setUp()
103
 
        self.disable_missing_extensions_warning()
104
 
 
105
 
    def test_server_exception_with_hook(self):
106
 
        """Catch exception from the server in the server_exception hook.
107
 
 
108
 
        We use ``run_bzr_serve_then_func`` without a ``func`` so the server
109
 
        will receive a KeyboardInterrupt exception we want to catch.
110
 
        """
111
 
        def hook(exception):
112
 
            if exception[0] is KeyboardInterrupt:
113
 
                sys.stderr.write('catching KeyboardInterrupt\n')
114
 
                return True
115
 
            else:
116
 
                return False
117
 
        SmartTCPServer.hooks.install_named_hook(
118
 
            'server_exception', hook,
119
 
            'test_server_except_hook hook')
120
 
        args = ['--port', 'localhost:0', '--quiet']
121
 
        out, err = self.run_bzr_serve_then_func(args, retcode=0)
122
 
        self.assertEqual('catching KeyboardInterrupt\n', err)
123
 
 
124
 
    def test_server_exception_no_hook(self):
125
 
        """test exception without hook returns error"""
126
 
        args = []
127
 
        out, err = self.run_bzr_serve_then_func(args, retcode=3)
128
 
 
129
 
    def assertInetServerShutsdownCleanly(self, process):
 
28
from bzrlib.errors import ParamikoNotPresent
 
29
from bzrlib.tests import TestCaseWithTransport, TestSkipped
 
30
from bzrlib.transport import get_transport, smart
 
31
 
 
32
 
 
33
class DoesNotCloseStdOutClient(smart.SmartStreamClient):
 
34
    """A client that doesn't close stdout upon disconnect().
 
35
    
 
36
    We wish to let stdout remain open so that we can see if the server writes
 
37
    anything to stdout during its shutdown.
 
38
    """
 
39
 
 
40
    def disconnect(self):
 
41
        if self._connected:
 
42
            self._connected = False
 
43
            # The client's out is the server's in.
 
44
            self._out.close()
 
45
 
 
46
 
 
47
class TestBzrServe(TestCaseWithTransport):
 
48
 
 
49
    def assertInetServerShutsdownCleanly(self, client, process):
130
50
        """Shutdown the server process looking for errors."""
131
 
        # Shutdown the server: the server should shut down when it cannot read
132
 
        # from stdin anymore.
133
 
        process.stdin.close()
 
51
        # Disconnect the client forcefully JUST IN CASE because of __del__'s use
 
52
        # in the smart module.
 
53
        client.disconnect()
 
54
 
 
55
        # Shutdown the server: the client should have disconnected cleanly and
 
56
        # closed stdin, so the server process should shut itself down.
 
57
        self.assertTrue(process.stdin.closed)
134
58
        # Hide stdin from the subprocess module, so it won't fail to close it.
135
59
        process.stdin = None
136
 
        result = self.finish_bzr_subprocess(process)
 
60
        result = self.finish_bzr_subprocess(process, retcode=0)
137
61
        self.assertEqual('', result[0])
138
62
        self.assertEqual('', result[1])
139
 
 
 
63
    
140
64
    def assertServerFinishesCleanly(self, process):
141
65
        """Shutdown the bzr serve instance process looking for errors."""
142
66
        # Shutdown the server
145
69
        self.assertEqual('', result[0])
146
70
        self.assertEqual('bzr: interrupted\n', result[1])
147
71
 
148
 
    def make_read_requests(self, branch):
149
 
        """Do some read only requests."""
150
 
        branch.lock_read()
151
 
        try:
152
 
            branch.repository.all_revision_ids()
153
 
            self.assertEqual(_mod_revision.NULL_REVISION,
154
 
                             _mod_revision.ensure_null(branch.last_revision()))
155
 
        finally:
156
 
            branch.unlock()
157
 
 
158
72
    def start_server_inet(self, extra_options=()):
159
73
        """Start a bzr server subprocess using the --inet option.
160
74
 
163
77
            finish_bzr_subprocess, a client for the server, and a transport.
164
78
        """
165
79
        # Serve from the current directory
166
 
        args = ['serve', '--inet']
167
 
        args.extend(extra_options)
168
 
        process = self.start_bzr_subprocess(args)
 
80
        process = self.start_bzr_subprocess(['serve', '--inet'])
169
81
 
170
82
        # Connect to the server
171
83
        # We use this url because while this is no valid URL to connect to this
172
84
        # server instance, the transport needs a URL.
173
 
        url = 'bzr://localhost/'
174
 
        self.permit_url(url)
175
 
        client_medium = medium.SmartSimplePipesClientMedium(
176
 
            process.stdout, process.stdin, url)
177
 
        transport = remote.RemoteTransport(url, medium=client_medium)
178
 
        return process, transport
 
85
        client = DoesNotCloseStdOutClient(
 
86
            lambda: (process.stdout, process.stdin))
 
87
        transport = smart.SmartTransport('bzr://localhost/', client=client)
 
88
        return process, client, transport
179
89
 
180
90
    def start_server_port(self, extra_options=()):
181
91
        """Start a bzr server subprocess.
188
98
        args = ['serve', '--port', 'localhost:0']
189
99
        args.extend(extra_options)
190
100
        process = self.start_bzr_subprocess(args, skip_if_plan_to_signal=True)
191
 
        port_line = process.stderr.readline()
 
101
        port_line = process.stdout.readline()
192
102
        prefix = 'listening on port: '
193
103
        self.assertStartsWith(port_line, prefix)
194
104
        port = int(port_line[len(prefix):])
195
 
        url = 'bzr://localhost:%d/' % port
196
 
        self.permit_url(url)
197
 
        return process, url
198
 
 
199
 
    def test_bzr_serve_quiet(self):
200
 
        self.make_branch('.')
201
 
        args = ['--port', 'localhost:0', '--quiet']
202
 
        out, err = self.run_bzr_serve_then_func(args, retcode=3)
203
 
        self.assertEqual('', out)
204
 
        self.assertEqual('', err)
 
105
        return process,'bzr://localhost:%d/' % port
205
106
 
206
107
    def test_bzr_serve_inet_readonly(self):
207
108
        """bzr server should provide a read only filesystem by default."""
208
 
        process, transport = self.start_server_inet()
 
109
        process, client, transport = self.start_server_inet()
209
110
        self.assertRaises(errors.TransportNotPossible, transport.mkdir, 'adir')
210
 
        self.assertInetServerShutsdownCleanly(process)
 
111
        # finish with the transport
 
112
        del transport
 
113
        self.assertInetServerShutsdownCleanly(client, process)
211
114
 
212
115
    def test_bzr_serve_inet_readwrite(self):
213
116
        # Make a branch
214
117
        self.make_branch('.')
215
118
 
216
 
        process, transport = self.start_server_inet(['--allow-writes'])
 
119
        process, client, transport = self.start_server_inet(['--allow-writes'])
217
120
 
218
 
        # We get a working branch, and can create a directory
 
121
        # We get a working branch
219
122
        branch = BzrDir.open_from_transport(transport).open_branch()
220
 
        self.make_read_requests(branch)
221
 
        transport.mkdir('adir')
222
 
        self.assertInetServerShutsdownCleanly(process)
 
123
        branch.repository.get_revision_graph()
 
124
        self.assertEqual(None, branch.last_revision())
 
125
 
 
126
        # finish with the transport
 
127
        del transport
 
128
 
 
129
        self.assertInetServerShutsdownCleanly(client, process)
223
130
 
224
131
    def test_bzr_serve_port_readonly(self):
225
132
        """bzr server should provide a read only filesystem by default."""
226
133
        process, url = self.start_server_port()
227
 
        t = transport.get_transport(url)
228
 
        self.assertRaises(errors.TransportNotPossible, t.mkdir, 'adir')
 
134
        transport = get_transport(url)
 
135
        self.assertRaises(errors.TransportNotPossible, transport.mkdir, 'adir')
229
136
        self.assertServerFinishesCleanly(process)
230
137
 
231
138
    def test_bzr_serve_port_readwrite(self):
236
143
 
237
144
        # Connect to the server
238
145
        branch = Branch.open(url)
239
 
        self.make_read_requests(branch)
 
146
 
 
147
        # We get a working branch
 
148
        branch.repository.get_revision_graph()
 
149
        self.assertEqual(None, branch.last_revision())
 
150
 
240
151
        self.assertServerFinishesCleanly(process)
241
152
 
242
 
    def test_bzr_serve_supports_protocol(self):
 
153
    def test_bzr_serve_no_args(self):
 
154
        """'bzr serve' with no arguments or options should not traceback."""
 
155
        out, err = self.run_bzr_error(
 
156
            ['bzr serve requires one of --inet or --port'], 'serve')
 
157
 
 
158
    def test_bzr_connect_to_bzr_ssh(self):
 
159
        """User acceptance that get_transport of a bzr+ssh:// behaves correctly.
 
160
 
 
161
        bzr+ssh:// should cause bzr to run a remote bzr smart server over SSH.
 
162
        """
 
163
        try:
 
164
            from bzrlib.transport.sftp import SFTPServer
 
165
        except ParamikoNotPresent:
 
166
            raise TestSkipped('Paramiko not installed')
 
167
        from bzrlib.tests.stub_sftp import StubServer
 
168
        
243
169
        # Make a branch
244
 
        self.make_branch('.')
245
 
 
246
 
        process, url = self.start_server_port(['--allow-writes',
247
 
                                               '--protocol=bzr'])
248
 
 
249
 
        # Connect to the server
250
 
        branch = Branch.open(url)
251
 
        self.make_read_requests(branch)
252
 
        self.assertServerFinishesCleanly(process)
253
 
 
254
 
    def test_bzr_serve_dhpss(self):
255
 
        # This is a smoke test that the server doesn't crash when run with
256
 
        # -Dhpss, and does drop some hpss logging to the file.
257
 
        self.make_branch('.')
258
 
        log_fname = os.getcwd() + '/server.log'
259
 
        self.overrideEnv('BZR_LOG', log_fname)
260
 
        process, transport = self.start_server_inet(['-Dhpss'])
261
 
        branch = BzrDir.open_from_transport(transport).open_branch()
262
 
        self.make_read_requests(branch)
263
 
        self.assertInetServerShutsdownCleanly(process)
264
 
        f = open(log_fname, 'rb')
265
 
        content = f.read()
266
 
        f.close()
267
 
        self.assertContainsRe(content, r'hpss request: \[[0-9-]+\]')
268
 
 
269
 
 
270
 
class TestCmdServeChrooting(TestBzrServeBase):
271
 
 
272
 
    def test_serve_tcp(self):
273
 
        """'bzr serve' wraps the given --directory in a ChrootServer.
274
 
 
275
 
        So requests that search up through the parent directories (like
276
 
        find_repositoryV3) will give "not found" responses, rather than
277
 
        InvalidURLJoin or jail break errors.
278
 
        """
279
 
        t = self.get_transport()
280
 
        t.mkdir('server-root')
281
 
        self.run_bzr_serve_then_func(
282
 
            ['--port', '127.0.0.1:0',
283
 
             '--directory', t.local_abspath('server-root'),
284
 
             '--allow-writes'],
285
 
            func=self.when_server_started)
286
 
        # The when_server_started method issued a find_repositoryV3 that should
287
 
        # fail with 'norepository' because there are no repositories inside the
288
 
        # --directory.
289
 
        self.assertEqual(('norepository',), self.client_resp)
290
 
 
291
 
    def when_server_started(self):
292
 
        # Connect to the TCP server and issue some requests and see what comes
293
 
        # back.
294
 
        client_medium = medium.SmartTCPClientMedium(
295
 
            '127.0.0.1', self.tcp_server.port,
296
 
            'bzr://localhost:%d/' % (self.tcp_server.port,))
297
 
        smart_client = client._SmartClient(client_medium)
298
 
        resp = smart_client.call('mkdir', 'foo', '')
299
 
        resp = smart_client.call('BzrDirFormat.initialize', 'foo/')
 
170
        self.make_branch('a_branch')
 
171
 
 
172
        # Start an SSH server
 
173
        self.command_executed = []
 
174
        # XXX: This is horrible -- we define a really dumb SSH server that
 
175
        # executes commands, and manage the hooking up of stdin/out/err to the
 
176
        # SSH channel ourselves.  Surely this has already been implemented
 
177
        # elsewhere?
 
178
        class StubSSHServer(StubServer):
 
179
 
 
180
            test = self
 
181
 
 
182
            def check_channel_exec_request(self, channel, command):
 
183
                self.test.command_executed.append(command)
 
184
                proc = subprocess.Popen(
 
185
                    command, shell=True, stdin=subprocess.PIPE,
 
186
                    stdout=subprocess.PIPE, stderr=subprocess.PIPE)
 
187
                
 
188
                # XXX: horribly inefficient, not to mention ugly.
 
189
                # Start a thread for each of stdin/out/err, and relay bytes from
 
190
                # the subprocess to channel and vice versa.
 
191
                def ferry_bytes(read, write, close):
 
192
                    while True:
 
193
                        bytes = read(1)
 
194
                        if bytes == '':
 
195
                            close()
 
196
                            break
 
197
                        write(bytes)
 
198
 
 
199
                file_functions = [
 
200
                    (channel.recv, proc.stdin.write, proc.stdin.close),
 
201
                    (proc.stdout.read, channel.sendall, channel.close),
 
202
                    (proc.stderr.read, channel.sendall_stderr, channel.close)]
 
203
                for read, write, close in file_functions:
 
204
                    t = threading.Thread(
 
205
                        target=ferry_bytes, args=(read, write, close))
 
206
                    t.start()
 
207
 
 
208
                return True
 
209
 
 
210
        ssh_server = SFTPServer(StubSSHServer)
 
211
        # XXX: We *don't* want to override the default SSH vendor, so we set
 
212
        # _vendor to what _get_ssh_vendor returns.
 
213
        ssh_server.setUp()
 
214
        self.addCleanup(ssh_server.tearDown)
 
215
        port = ssh_server._listener.port
 
216
 
 
217
        # Access the branch via a bzr+ssh URL.  The BZR_REMOTE_PATH environment
 
218
        # variable is used to tell bzr what command to run on the remote end.
 
219
        path_to_branch = os.path.abspath('a_branch')
 
220
        
 
221
        orig_bzr_remote_path = os.environ.get('BZR_REMOTE_PATH')
 
222
        os.environ['BZR_REMOTE_PATH'] = self.get_bzr_path()
300
223
        try:
301
 
            resp = smart_client.call('BzrDir.find_repositoryV3', 'foo/')
302
 
        except errors.ErrorFromSmartServer, e:
303
 
            resp = e.error_tuple
304
 
        self.client_resp = resp
305
 
        client_medium.disconnect()
306
 
 
307
 
 
308
 
class TestUserdirExpansion(TestCaseWithMemoryTransport):
309
 
 
310
 
    @staticmethod
311
 
    def fake_expanduser(path):
312
 
        """A simple, environment-independent, function for the duration of this
313
 
        test.
314
 
 
315
 
        Paths starting with a path segment of '~user' will expand to start with
316
 
        '/home/user/'.  Every other path will be unchanged.
317
 
        """
318
 
        if path.split('/', 1)[0] == '~user':
319
 
            return '/home/user' + path[len('~user'):]
320
 
        return path
321
 
 
322
 
    def make_test_server(self, base_path='/'):
323
 
        """Make and start a BzrServerFactory, backed by a memory transport, and
324
 
        creat '/home/user' in that transport.
325
 
        """
326
 
        bzr_server = BzrServerFactory(
327
 
            self.fake_expanduser, lambda t: base_path)
328
 
        mem_transport = self.get_transport()
329
 
        mem_transport.mkdir_multi(['home', 'home/user'])
330
 
        bzr_server.set_up(mem_transport, None, None, inet=True)
331
 
        self.addCleanup(bzr_server.tear_down)
332
 
        return bzr_server
333
 
 
334
 
    def test_bzr_serve_expands_userdir(self):
335
 
        bzr_server = self.make_test_server()
336
 
        self.assertTrue(bzr_server.smart_server.backing_transport.has('~user'))
337
 
 
338
 
    def test_bzr_serve_does_not_expand_userdir_outside_base(self):
339
 
        bzr_server = self.make_test_server('/foo')
340
 
        self.assertFalse(bzr_server.smart_server.backing_transport.has('~user'))
341
 
 
342
 
    def test_get_base_path(self):
343
 
        """cmd_serve will turn the --directory option into a LocalTransport
344
 
        (optionally decorated with 'readonly+').  BzrServerFactory can
345
 
        determine the original --directory from that transport.
346
 
        """
347
 
        # URLs always include the trailing slash, and get_base_path returns it
348
 
        base_dir = osutils.abspath('/a/b/c') + '/'
349
 
        base_url = urlutils.local_path_to_url(base_dir) + '/'
350
 
        # Define a fake 'protocol' to capture the transport that cmd_serve
351
 
        # passes to serve_bzr.
352
 
        def capture_transport(transport, host, port, inet):
353
 
            self.bzr_serve_transport = transport
354
 
        cmd = builtins.cmd_serve()
355
 
        # Read-only
356
 
        cmd.run(directory=base_dir, protocol=capture_transport)
357
 
        server_maker = BzrServerFactory()
358
 
        self.assertEqual(
359
 
            'readonly+%s' % base_url, self.bzr_serve_transport.base)
360
 
        self.assertEqual(
361
 
            base_dir, server_maker.get_base_path(self.bzr_serve_transport))
362
 
        # Read-write
363
 
        cmd.run(directory=base_dir, protocol=capture_transport,
364
 
            allow_writes=True)
365
 
        server_maker = BzrServerFactory()
366
 
        self.assertEqual(base_url, self.bzr_serve_transport.base)
367
 
        self.assertEqual(base_dir,
368
 
            server_maker.get_base_path(self.bzr_serve_transport))
 
224
            branch = Branch.open(
 
225
                'bzr+ssh://fred:secret@localhost:%d%s' % (port, path_to_branch))
 
226
            
 
227
            branch.repository.get_revision_graph()
 
228
            self.assertEqual(None, branch.last_revision())
 
229
            # Check we can perform write operations
 
230
            branch.bzrdir.root_transport.mkdir('foo')
 
231
        finally:
 
232
            # Restore the BZR_REMOTE_PATH environment variable back to its
 
233
            # original state.
 
234
            if orig_bzr_remote_path is None:
 
235
                del os.environ['BZR_REMOTE_PATH']
 
236
            else:
 
237
                os.environ['BZR_REMOTE_PATH'] = orig_bzr_remote_path
 
238
 
 
239
        self.assertEqual(
 
240
            ['%s serve --inet --directory=/ --allow-writes'
 
241
             % self.get_bzr_path()],
 
242
            self.command_executed)
 
243