89 lines
3.0 KiB
Python
89 lines
3.0 KiB
Python
# Copyright 2015 Red Hat, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import logging
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import os
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from grafana_dashboards.cache import Cache
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from grafana_dashboards.grafana import Grafana
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from grafana_dashboards.parser import YamlParser
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LOG = logging.getLogger(__name__)
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class Builder(object):
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def __init__(self, config):
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self.grafana = self._setup_grafana(config)
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self.parser = YamlParser()
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self.cache = self._setup_cache(config)
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def _setup_cache(self, config):
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if config.has_option('cache', 'enabled'):
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self.cache_enabled = config.getboolean('cache', 'enabled')
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else:
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self.cache_enabled = True
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if config.has_option('cache', 'cachedir'):
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cachedir = config.get('cache', 'cachedir')
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else:
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cachedir = '~/.cache/grafyaml'
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return Cache(cachedir)
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def _setup_grafana(self, config):
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if config.has_option('grafana', 'apikey'):
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key = config.get('grafana', 'apikey')
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else:
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key = None
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if config.has_option('grafana', 'url'):
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url = config.get('grafana', 'url')
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else:
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url = 'http://localhost:8080'
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return Grafana(url, key)
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def delete_dashboard(self, path):
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self.load_files(path)
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dashboards = self.parser.data.get('dashboard', {})
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for name in dashboards:
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LOG.debug('Deleting grafana dashboard %s', name)
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self.grafana.dashboard.delete(name)
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self.cache.set(name, '')
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def load_files(self, path):
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files_to_process = []
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if os.path.isdir(path):
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files_to_process.extend([os.path.join(path, f)
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for f in os.listdir(path)
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if (f.endswith('.yaml')
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or f.endswith('.yml'))])
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else:
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files_to_process.append(path)
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for fn in files_to_process:
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self.parser.parse(fn)
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def update_dashboard(self, path):
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self.load_files(path)
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dashboards = self.parser.data.get('dashboard', {})
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LOG.info('Number of dashboards generated: %d', len(dashboards))
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for name in dashboards:
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data, md5 = self.parser.get_dashboard(name)
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if self.cache.has_changed(name, md5) or not self.cache_enabled:
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self.grafana.dashboard.create(name, data, overwrite=True)
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self.cache.set(name, md5)
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else:
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LOG.debug("'%s' has not changed" % name)
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