1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
# Copyright 2020 LINE Corp.
# All Rights Reserved.
#
# 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.
from oslo_log import log as logging
from oslo_utils import importutils
from oslo_metrics import message_type
LOG = logging.getLogger(__name__)
MODULE_LISTS = [
"oslo_metrics.metrics.oslo_messaging",
]
class MessageRouter():
def __init__(self):
self.modules = {}
for m_str in MODULE_LISTS:
mod = importutils.try_import(m_str, False)
if not mod:
LOG.error("Failed to load module %s" % m_str)
self.modules[m_str.split('.')[-1]] = mod
def process(self, raw_string):
try:
metric = message_type.Metric.from_json(raw_string.decode())
self.dispatch(metric)
except Exception as e:
LOG.error("Failed to parse: %s", e)
def dispatch(self, metric):
if metric.module not in self.modules:
LOG.error("Failed to lookup modules by %s" % metric.module)
return
mod = self.modules.get(metric.module)
# Get metric
try:
metric_definition = getattr(mod, metric.name)
except AttributeError as e:
LOG.error("Failed to load metrics {}: {}".format(metric.name, e))
return
# Get labels
try:
metric_with_label = getattr(metric_definition, "labels")
metric_with_label = metric_with_label(**metric.labels)
except AttributeError as e:
LOG.error("Failed to load labels func from metrics %s: %s" %
(metric.name, e))
return
LOG.debug("Get labels with {}: {}".format(metric.name, metric.labels))
# perform action
try:
embed_action = getattr(metric_with_label, metric.action.action)
if metric.action.value is not None:
embed_action(metric.action.value)
else:
embed_action()
except AttributeError as e:
LOG.error("Failed to perform metric actionv %s, %s: %s" %
(metric.action.action, metric.action.value, e))
return
LOG.debug("Perform action %s for %s metrics" %
(metric.action.action, metric.name))
|
