python: Create new vlog module.

Currently, each python daemon has to come up with it's own logging
solution.  These logging strategies are not consistent across the
python code or with the C vlog module.  This patch adds a new
logging module which hopes to solve the problem.  This new module
generates log messages in a manner consistent with the C code.
Furthermore, it can easily be extended to support things like rate
limiters in the future.

This patch does not update any python code to use the new module.

1 files changed, 48 insertions, 0 deletions

diff --git a/tests/test-vlog.py b/tests/test-vlog.py
new file mode 100644
index 00000000..1c6a2df1
--- /dev/null
+++ b/tests/test-vlog.py
@@ -0,0 +1,48 @@
+# Copyright (c) 2011 Nicira Networks.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import argparse
+
+import ovs.vlog
+
+
+def main():
+    modules = [ovs.vlog.Vlog("module_%d" % i) for i in xrange(3)]
+
+    parser = argparse.ArgumentParser(description="Vlog Module Tester")
+    ovs.vlog.add_args(parser)
+    args = parser.parse_args()
+    ovs.vlog.handle_args(args)
+
+    for m in modules:
+        m.emer("emergency")
+        m.err("error")
+        m.warn("warning")
+        m.info("information")
+        m.dbg("debug")
+
+        try:
+            fail = False  # Silence pychecker warning.
+            assert fail
+        except AssertionError:
+            m.emer("emergency exception", exc_info=True)
+            m.err("error exception", exc_info=True)
+            m.warn("warn exception", exc_info=True)
+            m.info("information exception", exc_info=True)
+            m.dbg("debug exception", exc_info=True)
+            m.exception("exception")
+
+
+if __name__ == '__main__':
+    main()