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# -*- coding: utf-8 -*-
#
# Copyright (c) 2016 Red Hat, Inc. <http://www.redhat.com>
# This file is part of GlusterFS.
#
# This file is licensed to you under your choice of the GNU Lesser
# General Public License, version 3 or any later version (LGPLv3 or
# later), or the GNU General Public License, version 2 (GPLv2), in all
# cases as published by the Free Software Foundation.
#
import json
import os
import logging
import requests
from eventsapiconf import (LOG_FILE,
WEBHOOKS_FILE,
DEFAULT_CONFIG_FILE,
CUSTOM_CONFIG_FILE,
UUID_FILE)
import eventtypes
# Webhooks list
_webhooks = {}
# Default Log Level
_log_level = "INFO"
# Config Object
_config = {}
# Init Logger instance
logger = logging.getLogger(__name__)
NodeID = None
def get_node_uuid():
val = None
with open(UUID_FILE) as f:
for line in f:
if line.startswith("UUID="):
val = line.strip().split("=")[-1]
break
return val
def get_config(key):
if not _config:
load_config()
return _config.get(key, None)
def get_event_type_name(idx):
"""
Returns Event Type text from the index. For example, VOLUME_CREATE
"""
return eventtypes.all_events[idx].replace("EVENT_", "")
def setup_logger():
"""
Logging initialization, Log level by default will be INFO, once config
file is read, respective log_level will be set.
"""
global logger
logger.setLevel(logging.INFO)
# create the logging file handler
fh = logging.FileHandler(LOG_FILE)
formatter = logging.Formatter("[%(asctime)s] %(levelname)s "
"[%(module)s - %(lineno)s:%(funcName)s] "
"- %(message)s")
fh.setFormatter(formatter)
# add handler to logger object
logger.addHandler(fh)
def load_config():
"""
Load/Reload the config from REST Config files. This function will
be triggered during init and when SIGUSR2.
"""
global _config
_config = {}
if os.path.exists(DEFAULT_CONFIG_FILE):
_config = json.load(open(DEFAULT_CONFIG_FILE))
if os.path.exists(CUSTOM_CONFIG_FILE):
_config.update(json.load(open(CUSTOM_CONFIG_FILE)))
def load_log_level():
"""
Reads log_level from Config file and sets accordingly. This function will
be triggered during init and when SIGUSR2.
"""
global logger, _log_level
new_log_level = _config.get("log_level", "INFO")
if _log_level != new_log_level:
logger.setLevel(getattr(logging, new_log_level.upper()))
_log_level = new_log_level.upper()
def load_webhooks():
"""
Load/Reload the webhooks list. This function will
be triggered during init and when SIGUSR2.
"""
global _webhooks
_webhooks = {}
if os.path.exists(WEBHOOKS_FILE):
_webhooks = json.load(open(WEBHOOKS_FILE))
def load_all():
"""
Wrapper function to call all load/reload functions. This function will
be triggered during init and when SIGUSR2.
"""
load_config()
load_webhooks()
load_log_level()
def publish(ts, event_key, data):
global NodeID
if NodeID is None:
NodeID = get_node_uuid()
message = {
"nodeid": NodeID,
"ts": int(ts),
"event": get_event_type_name(event_key),
"message": data
}
if _webhooks:
plugin_webhook(message)
else:
# TODO: Default action?
pass
def plugin_webhook(message):
message_json = json.dumps(message, sort_keys=True)
logger.debug("EVENT: {0}".format(message_json))
for url, token in _webhooks.items():
http_headers = {"Content-Type": "application/json"}
if token != "" and token is not None:
http_headers["Authorization"] = "Bearer " + token
try:
resp = requests.post(url, headers=http_headers, data=message_json)
except requests.ConnectionError as e:
logger.warn("Event push failed to URL: {url}, "
"Event: {event}, "
"Status: {error}".format(
url=url,
event=message_json,
error=e))
continue
if resp.status_code != 200:
logger.warn("Event push failed to URL: {url}, "
"Event: {event}, "
"Status Code: {status_code}".format(
url=url,
event=message_json,
status_code=resp.status_code))
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