130 lines
3.5 KiB
Python
130 lines
3.5 KiB
Python
import redis
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import json
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from util.dynamic import import_class
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from datetime import timedelta
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ONE_DAY = timedelta(days=1)
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class BuildStatusRetrievalError(Exception):
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pass
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class RedisBuildLogs(object):
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ERROR = 'error'
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COMMAND = 'command'
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PHASE = 'phase'
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def __init__(self, redis_config):
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self._redis = redis.StrictRedis(socket_connect_timeout=5, **redis_config)
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@staticmethod
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def _logs_key(build_id):
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return 'builds/%s/logs' % build_id
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def append_log_entry(self, build_id, log_obj):
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"""
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Appends the serialized form of log_obj to the end of the log entry list
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and returns the new length of the list.
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"""
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return self._redis.rpush(self._logs_key(build_id), json.dumps(log_obj))
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def append_log_message(self, build_id, log_message, log_type=None, log_data=None):
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"""
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Wraps the message in an envelope and push it to the end of the log entry
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list and returns the index at which it was inserted.
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"""
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log_obj = {
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'message': log_message
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}
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if log_type:
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log_obj['type'] = log_type
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if log_data:
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log_obj['data'] = log_data
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return self._redis.rpush(self._logs_key(build_id), json.dumps(log_obj)) - 1
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def get_log_entries(self, build_id, start_index):
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"""
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Returns a tuple of the current length of the list and an iterable of the
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requested log entries.
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"""
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try:
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llen = self._redis.llen(self._logs_key(build_id))
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log_entries = self._redis.lrange(self._logs_key(build_id), start_index, -1)
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return (llen, (json.loads(entry) for entry in log_entries))
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except redis.ConnectionError:
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raise BuildStatusRetrievalError('Cannot retrieve build logs')
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def expire_log_entries(self, build_id):
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"""
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Sets the log entry to expire in 1 day.
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"""
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self._redis.expire(self._logs_key(build_id), ONE_DAY)
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@staticmethod
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def _status_key(build_id):
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return 'builds/%s/status' % build_id
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def set_status(self, build_id, status_obj):
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"""
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Sets the status key for this build to json serialized form of the supplied
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obj.
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"""
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self._redis.set(self._status_key(build_id), json.dumps(status_obj))
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def get_status(self, build_id):
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"""
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Loads the status information for the specified build id.
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"""
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try:
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fetched = self._redis.get(self._status_key(build_id))
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except redis.ConnectionError:
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raise BuildStatusRetrievalError('Cannot retrieve build status')
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return json.loads(fetched) if fetched else None
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def check_health(self):
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try:
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return self._redis.ping() == True
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except redis.ConnectionError:
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return False
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class BuildLogs(object):
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def __init__(self, app=None):
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self.app = app
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if app is not None:
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self.state = self.init_app(app)
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else:
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self.state = None
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def init_app(self, app):
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buildlogs_config = app.config.get('BUILDLOGS_REDIS')
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if not buildlogs_config:
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# This is the old key name.
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buildlogs_config = {
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'host': app.config.get('BUILDLOGS_REDIS_HOSTNAME')
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}
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buildlogs_options = app.config.get('BUILDLOGS_OPTIONS', [])
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buildlogs_import = app.config.get('BUILDLOGS_MODULE_AND_CLASS', None)
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if buildlogs_import is None:
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klass = RedisBuildLogs
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else:
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klass = import_class(buildlogs_import[0], buildlogs_import[1])
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buildlogs = klass(buildlogs_config, *buildlogs_options)
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# register extension with app
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app.extensions = getattr(app, 'extensions', {})
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app.extensions['buildlogs'] = buildlogs
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return buildlogs
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def __getattr__(self, name):
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return getattr(self.state, name, None)
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