1# Copyright 2012 the V8 project authors. All rights reserved.
2# Redistribution and use in source and binary forms, with or without
3# modification, are permitted provided that the following conditions are
4# met:
5#
6#     * Redistributions of source code must retain the above copyright
7#       notice, this list of conditions and the following disclaimer.
8#     * Redistributions in binary form must reproduce the above
9#       copyright notice, this list of conditions and the following
10#       disclaimer in the documentation and/or other materials provided
11#       with the distribution.
12#     * Neither the name of Google Inc. nor the names of its
13#       contributors may be used to endorse or promote products derived
14#       from this software without specific prior written permission.
15#
16# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28
29import os
30import socket
31import subprocess
32import threading
33import time
34
35from . import distro
36from ..local import execution
37from ..local import perfdata
38from ..objects import peer
39from ..objects import workpacket
40from ..server import compression
41from ..server import constants
42from ..server import local_handler
43from ..server import signatures
44
45
46def GetPeers():
47  data = local_handler.LocalQuery([constants.REQUEST_PEERS])
48  if not data: return []
49  return [ peer.Peer.Unpack(p) for p in data ]
50
51
52class NetworkedRunner(execution.Runner):
53  def __init__(self, suites, progress_indicator, context, peers, workspace):
54    self.suites = suites
55    datapath = os.path.join("out", "testrunner_data")
56    # TODO(machenbach): These fields should exist now in the superclass.
57    # But there is no super constructor call. Check if this is a problem.
58    self.perf_data_manager = perfdata.PerfDataManager(datapath)
59    self.perfdata = self.perf_data_manager.GetStore(context.arch, context.mode)
60    for s in suites:
61      for t in s.tests:
62        t.duration = self.perfdata.FetchPerfData(t) or 1.0
63    self._CommonInit(suites, progress_indicator, context)
64    self.tests = []  # Only used if we need to fall back to local execution.
65    self.tests_lock = threading.Lock()
66    self.peers = peers
67    self.pubkey_fingerprint = None  # Fetched later.
68    self.base_rev = subprocess.check_output(
69        "cd %s; git log -1 --format=%%H --grep=git-svn-id" % workspace,
70        shell=True).strip()
71    self.base_svn_rev = subprocess.check_output(
72        "cd %s; git log -1 %s"          # Get commit description.
73        " | grep -e '^\s*git-svn-id:'"  # Extract "git-svn-id" line.
74        " | awk '{print $2}'"           # Extract "repository@revision" part.
75        " | sed -e 's/.*@//'" %         # Strip away "repository@".
76        (workspace, self.base_rev), shell=True).strip()
77    self.patch = subprocess.check_output(
78        "cd %s; git diff %s" % (workspace, self.base_rev), shell=True)
79    self.binaries = {}
80    self.initialization_lock = threading.Lock()
81    self.initialization_lock.acquire()  # Released when init is done.
82    self._OpenLocalConnection()
83    self.local_receiver_thread = threading.Thread(
84        target=self._ListenLocalConnection)
85    self.local_receiver_thread.daemon = True
86    self.local_receiver_thread.start()
87    self.initialization_lock.acquire()
88    self.initialization_lock.release()
89
90  def _OpenLocalConnection(self):
91    self.local_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
92    code = self.local_socket.connect_ex(("localhost", constants.CLIENT_PORT))
93    if code != 0:
94      raise RuntimeError("Failed to connect to local server")
95    compression.Send([constants.REQUEST_PUBKEY_FINGERPRINT], self.local_socket)
96
97  def _ListenLocalConnection(self):
98    release_lock_countdown = 1  # Pubkey.
99    self.local_receiver = compression.Receiver(self.local_socket)
100    while not self.local_receiver.IsDone():
101      data = self.local_receiver.Current()
102      if data[0] == constants.REQUEST_PUBKEY_FINGERPRINT:
103        pubkey = data[1]
104        if not pubkey: raise RuntimeError("Received empty public key")
105        self.pubkey_fingerprint = pubkey
106        release_lock_countdown -= 1
107      if release_lock_countdown == 0:
108        self.initialization_lock.release()
109        release_lock_countdown -= 1  # Prevent repeated triggering.
110      self.local_receiver.Advance()
111
112  def Run(self, jobs):
113    self.indicator.Starting()
114    need_libv8 = False
115    for s in self.suites:
116      shell = s.shell()
117      if shell not in self.binaries:
118        path = os.path.join(self.context.shell_dir, shell)
119        # Check if this is a shared library build.
120        try:
121          ldd = subprocess.check_output("ldd %s | grep libv8\\.so" % (path),
122                                        shell=True)
123          ldd = ldd.strip().split(" ")
124          assert ldd[0] == "libv8.so"
125          assert ldd[1] == "=>"
126          need_libv8 = True
127          binary_needs_libv8 = True
128          libv8 = signatures.ReadFileAndSignature(ldd[2])
129        except:
130          binary_needs_libv8 = False
131        binary = signatures.ReadFileAndSignature(path)
132        if binary[0] is None:
133          print("Error: Failed to create signature.")
134          assert binary[1] != 0
135          return binary[1]
136        binary.append(binary_needs_libv8)
137        self.binaries[shell] = binary
138    if need_libv8:
139      self.binaries["libv8.so"] = libv8
140    distro.Assign(self.suites, self.peers)
141    # Spawn one thread for each peer.
142    threads = []
143    for p in self.peers:
144      thread = threading.Thread(target=self._TalkToPeer, args=[p])
145      threads.append(thread)
146      thread.start()
147    try:
148      for thread in threads:
149        # Use a timeout so that signals (Ctrl+C) will be processed.
150        thread.join(timeout=10000000)
151      self._AnalyzePeerRuntimes()
152    except KeyboardInterrupt:
153      self.terminate = True
154      raise
155    except Exception, _e:
156      # If there's an exception we schedule an interruption for any
157      # remaining threads...
158      self.terminate = True
159      # ...and then reraise the exception to bail out.
160      raise
161    compression.Send(constants.END_OF_STREAM, self.local_socket)
162    self.local_socket.close()
163    if self.tests:
164      self._RunInternal(jobs)
165    self.indicator.Done()
166    return not self.failed
167
168  def _TalkToPeer(self, peer):
169    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
170    sock.settimeout(self.context.timeout + 10)
171    code = sock.connect_ex((peer.address, constants.PEER_PORT))
172    if code == 0:
173      try:
174        peer.runtime = None
175        start_time = time.time()
176        packet = workpacket.WorkPacket(peer=peer, context=self.context,
177                                       base_revision=self.base_svn_rev,
178                                       patch=self.patch,
179                                       pubkey=self.pubkey_fingerprint)
180        data, test_map = packet.Pack(self.binaries)
181        compression.Send(data, sock)
182        compression.Send(constants.END_OF_STREAM, sock)
183        rec = compression.Receiver(sock)
184        while not rec.IsDone() and not self.terminate:
185          data_list = rec.Current()
186          for data in data_list:
187            test_id = data[0]
188            if test_id < 0:
189              # The peer is reporting an error.
190              with self.lock:
191                print("\nPeer %s reports error: %s" % (peer.address, data[1]))
192              continue
193            test = test_map.pop(test_id)
194            test.MergeResult(data)
195            try:
196              self.perfdata.UpdatePerfData(test)
197            except Exception, e:
198              print("UpdatePerfData exception: %s" % e)
199              pass  # Just keep working.
200            with self.lock:
201              perf_key = self.perfdata.GetKey(test)
202              compression.Send(
203                  [constants.INFORM_DURATION, perf_key, test.duration,
204                   self.context.arch, self.context.mode],
205                  self.local_socket)
206              self.indicator.AboutToRun(test)
207              has_unexpected_output = test.suite.HasUnexpectedOutput(test)
208              if has_unexpected_output:
209                self.failed.append(test)
210                if test.output.HasCrashed():
211                  self.crashed += 1
212              else:
213                self.succeeded += 1
214              self.remaining -= 1
215              self.indicator.HasRun(test, has_unexpected_output)
216          rec.Advance()
217        peer.runtime = time.time() - start_time
218      except KeyboardInterrupt:
219        sock.close()
220        raise
221      except Exception, e:
222        print("Got exception: %s" % e)
223        pass  # Fall back to local execution.
224    else:
225      compression.Send([constants.UNRESPONSIVE_PEER, peer.address],
226                       self.local_socket)
227    sock.close()
228    if len(test_map) > 0:
229      # Some tests have not received any results. Run them locally.
230      print("\nNo results for %d tests, running them locally." % len(test_map))
231      self._EnqueueLocally(test_map)
232
233  def _EnqueueLocally(self, test_map):
234    with self.tests_lock:
235      for test in test_map:
236        self.tests.append(test_map[test])
237
238  def _AnalyzePeerRuntimes(self):
239    total_runtime = 0.0
240    total_work = 0.0
241    for p in self.peers:
242      if p.runtime is None:
243        return
244      total_runtime += p.runtime
245      total_work += p.assigned_work
246    for p in self.peers:
247      p.assigned_work /= total_work
248      p.runtime /= total_runtime
249      perf_correction = p.assigned_work / p.runtime
250      old_perf = p.relative_performance
251      p.relative_performance = (old_perf + perf_correction) / 2.0
252      compression.Send([constants.UPDATE_PERF, p.address,
253                        p.relative_performance],
254                       self.local_socket)
255