Fix path issue for devstack

Add collectd_ceilometer_plugin.py so collectd doesn't get confused
between module and file.

Change-Id: Icd63feafebc3e057e4e0cf9392237464b7c7a5f1
Co-Authored-By: Jaroslav Safka <jaroslavx.safka@intel.com>

collectd_ceilometer/__init__.py

@@ -14,6 +14,5 @@
 """Collectd Ceilometer plugin implementation"""
 import pbr.version
 
-
 __version__ = pbr.version.VersionInfo(
     'collectd_ceilometer_plugin').version_string()

collectd_ceilometer_plugin.py

@@ -0,0 +1,88 @@
+# -*- coding: utf-8 -*-
+
+# 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.
+"""Ceilometer collectd plugin"""
+
+from __future__ import absolute_import
+from __future__ import unicode_literals
+
+# pylint: disable=import-error
+import collectd
+# pylint: enable=import-error
+
+from collectd_ceilometer.logger import CollectdLogHandler
+from collectd_ceilometer.meters import MeterStorage
+from collectd_ceilometer.settings import Config
+from collectd_ceilometer.writer import Writer
+import logging
+
+logging.getLogger().addHandler(CollectdLogHandler())
+logging.getLogger().setLevel(logging.NOTSET)
+LOGGER = logging.getLogger(__name__)
+
+
+class Plugin(object):
+    """Ceilometer plugin with collectd callbacks"""
+    # NOTE: this is multithreaded class
+
+    def __init__(self):
+        self._meters = None
+        self._writer = None
+        logging.getLogger("requests").setLevel(logging.WARNING)
+
+    def config(self, cfg):
+        """Configuration callback
+
+        @param cfg configuration node provided by collectd
+        """
+        # pylint: disable=no-self-use
+        Config.instance().read(cfg)
+
+    def init(self):
+        """Initialization callback"""
+
+        collectd.info('Initializing the collectd OpenStack python plugin')
+        self._meters = MeterStorage()
+        self._writer = Writer(self._meters)
+
+    def write(self, vl, data=None):
+        """Collectd write callback"""
+        # pylint: disable=broad-except
+        # pass arguments to the writer
+        try:
+            self._writer.write(vl, data)
+        except Exception as exc:
+            if collectd is not None:
+                collectd.error('Exception during write: %s' % exc)
+
+    def shutdown(self):
+        """Shutdown callback"""
+        # pylint: disable=broad-except
+        collectd.info("SHUTDOWN")
+        try:
+            self._writer.flush()
+        except Exception as exc:
+            if collectd is not None:
+                collectd.error('Exception during shutdown: %s' % exc)
+
+
+# The collectd plugin instance
+# pylint: disable=invalid-name
+instance = Plugin()
+# pylint: enable=invalid-name
+
+# Register plugin callbacks
+collectd.register_init(instance.init)
+collectd.register_config(instance.config)
+collectd.register_write(instance.write)
+collectd.register_shutdown(instance.shutdown)

devstack/libs/collectd

@@ -35,9 +35,9 @@ cat << EOF | sudo tee /etc/collectd.d/collectd-ceilometer-plugin.conf
     ModulePath "$COLLECTD_DIR"
     LogTraces true
     Interactive false
-    Import "collectd_ceilometer"
+    Import "collectd_ceilometer_plugin"
 
-    <Module collectd_ceilometer>
+    <Module collectd_ceilometer_plugin>
 
         # Batch size
         BATCH_SIZE 3

requirements.txt

@@ -6,3 +6,4 @@ requests
 libvirt-python
 pbr>=1.6
 Babel>=1.3
+future