Move to kernel style SPDX license identifiers

[babeltrace.git] / tests / data / plugins / src.ctf.lttng-live / lttng_live_server.py

diff --git a/tests/data/plugins/src.ctf.lttng-live/lttng_live_server.py b/tests/data/plugins/src.ctf.lttng-live/lttng_live_server.py
index 4c3c9ff45c0088d23f67e197fbcc6b6a4e925764..77b005ca3083cb264352a02aeab32a0e47748cb4 100644 (file)
--- a/tests/data/plugins/src.ctf.lttng-live/lttng_live_server.py
+++ b/tests/data/plugins/src.ctf.lttng-live/lttng_live_server.py
@@ -1,24 +1,7 @@
-# The MIT License (MIT)
+# SPDX-License-Identifier: MIT
 #
-# Copyright (c) 2019 Philippe Proulx <pproulx@efficios.com>
+# Copyright (C) 2019 Philippe Proulx <pproulx@efficios.com>
 #
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
 
 import argparse
 import collections.abc
@@ -457,7 +440,7 @@ class _LttngLiveViewerProtocolCodec:
                 version, tracing_session_id, offset, seek_type
             )
         elif cmd_type == 4:
-            stream_id, = self._unpack_payload('Q', data)
+            (stream_id,) = self._unpack_payload('Q', data)
             return _LttngLiveViewerGetNextDataStreamIndexEntryCommand(
                 version, stream_id
             )
@@ -467,15 +450,15 @@ class _LttngLiveViewerProtocolCodec:
                 version, stream_id, offset, req_length
             )
         elif cmd_type == 6:
-            stream_id, = self._unpack_payload('Q', data)
+            (stream_id,) = self._unpack_payload('Q', data)
             return _LttngLiveViewerGetMetadataStreamDataCommand(version, stream_id)
         elif cmd_type == 7:
-            tracing_session_id, = self._unpack_payload('Q', data)
+            (tracing_session_id,) = self._unpack_payload('Q', data)
             return _LttngLiveViewerGetNewStreamInfosCommand(version, tracing_session_id)
         elif cmd_type == 8:
             return _LttngLiveViewerCreateViewerSessionCommand(version)
         elif cmd_type == 9:
-            tracing_session_id, = self._unpack_payload('Q', data)
+            (tracing_session_id,) = self._unpack_payload('Q', data)
             return _LttngLiveViewerDetachFromTracingSessionCommand(
                 version, tracing_session_id
             )
@@ -674,9 +657,15 @@ class _LttngDataStreamIndex(collections.abc.Sequence):
                     break
 
                 assert len(data) == size
-                offset_bytes, total_size_bits, content_size_bits, timestamp_begin, timestamp_end, events_discarded, stream_class_id = struct.unpack(
-                    fmt, data
-                )
+                (
+                    offset_bytes,
+                    total_size_bits,
+                    content_size_bits,
+                    timestamp_begin,
+                    timestamp_end,
+                    events_discarded,
+                    stream_class_id,
+                ) = struct.unpack(fmt, data)
 
                 self._entries.append(
                     _LttngDataStreamIndexEntry(
@@ -1320,7 +1309,9 @@ class LttngLiveServer:
 
     def _listen(self):
         logging.info('Listening: port={}'.format(self._server_port))
-        self._sock.listen()
+        # Backlog must be present for Python version < 3.5.
+        # 128 is an arbitrary number since we expect only 1 connection anyway.
+        self._sock.listen(128)
         self._conn, viewer_addr = self._sock.accept()
         logging.info(
             'Accepted viewer: addr={}:{}'.format(viewer_addr[0], viewer_addr[1])
@@ -1337,7 +1328,7 @@ class LttngLiveServer:
             print(self._server_port, end='', file=tmp_port_file)
 
         # Rename temporary file to real file
-        os.rename(tmp_port_file.name, port_filename)
+        os.replace(tmp_port_file.name, port_filename)
         logging.info(
             'Renamed port file: src-path="{}", dst-path="{}"'.format(
                 tmp_port_file.name, port_filename