clearml-server/server/es_factory.py
2019-06-11 00:24:35 +03:00

86 lines
2.5 KiB
Python

from datetime import datetime
from elasticsearch import Elasticsearch, Transport
from config import config
log = config.logger(__file__)
_instances = {}
class MissingClusterConfiguration(Exception):
"""
Exception when cluster configuration is not found in config files
"""
pass
class InvalidClusterConfiguration(Exception):
"""
Exception when cluster configuration does not contain required properties
"""
pass
def connect(cluster_name):
"""
Returns the es client for the cluster.
Connects to the cluster if did not connect previously
:param cluster_name: Dot separated cluster path in the configuration file
:return: es client
:raises MissingClusterConfiguration: in case no config section is found for the cluster
:raises InvalidClusterConfiguration: in case cluster config section misses needed properties
"""
if cluster_name not in _instances:
cluster_config = _get_cluster_config(cluster_name)
hosts = cluster_config.get('hosts', None)
if not hosts:
raise InvalidClusterConfiguration(cluster_name)
args = cluster_config.get('args', {})
_instances[cluster_name] = Elasticsearch(hosts=hosts, transport_class=Transport, **args)
return _instances[cluster_name]
def _get_cluster_config(cluster_name):
"""
Returns cluster config for the specified cluster path
:param cluster_name: Dot separated cluster path in the configuration file
:return: config section for the cluster
:raises MissingClusterConfiguration: in case no config section is found for the cluster
"""
cluster_key = '.'.join(('hosts.elastic', cluster_name))
cluster_config = config.get(cluster_key, None)
if not cluster_config:
raise MissingClusterConfiguration(cluster_name)
return cluster_config
def connect_all():
clusters = config.get("hosts.elastic").as_plain_ordered_dict()
for name in clusters:
connect(name)
def instances():
return _instances
def timestamp_str_to_millis(ts_str):
epoch = datetime.utcfromtimestamp(0)
current_date = datetime.strptime(ts_str, "%Y-%m-%dT%H:%M:%S.%fZ")
return int((current_date - epoch).total_seconds() * 1000.0)
def get_timestamp_millis():
now = datetime.utcnow()
epoch = datetime.utcfromtimestamp(0)
return int((now - epoch).total_seconds() * 1000.0)
def get_es_timestamp_str():
now = datetime.utcnow()
return now.strftime("%Y-%m-%dT%H:%M:%S") + ".%03d" % (now.microsecond / 1000) + "Z"