grafyaml/grafana_dashboards/builder.py

73 lines
2.3 KiB
Python

# Copyright 2015 Red Hat, Inc.
#
# 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 os
from oslo_config import cfg
from oslo_log import log as logging
from grafana_dashboards.cache import Cache
from grafana_dashboards.grafana import Grafana
from grafana_dashboards.parser import YamlParser
grafana_opts = [
cfg.StrOpt(
'url', default='http://grafana.example.org',
help='URL for grafana server.'),
cfg.StrOpt(
'apikey', default=None,
help='API key for access grafana.'),
]
grafana_group = cfg.OptGroup(
name='grafana', title='Grafana options')
list_opts = lambda: [(grafana_group, grafana_opts), ]
CONF = cfg.CONF
CONF.register_group(grafana_group)
CONF.register_opts(grafana_opts, group='grafana')
LOG = logging.getLogger(__name__)
class Builder(object):
def __init__(self):
self.cache = Cache()
self.grafana = Grafana(CONF.grafana.url, CONF.grafana.apikey)
self.parser = YamlParser()
def load_files(self, path):
files_to_process = []
if os.path.isdir(path):
files_to_process.extend([os.path.join(path, f)
for f in os.listdir(path)
if (f.endswith('.yaml')
or f.endswith('.yml'))])
else:
files_to_process.append(path)
for fn in files_to_process:
self.parser.parse(fn)
def update_dashboard(self, path):
self.load_files(path)
dashboards = self.parser.data.get('dashboard', {})
for name in dashboards:
data, md5 = self.parser.get_dashboard(name)
if self.cache.has_changed(name, md5):
self.grafana.create_dashboard(name, data, overwrite=True)
self.cache.set(name, md5)
else:
LOG.debug("'%s' has not changed" % name)