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Mini Shell
import agent_util
try:
# Python 2.x
import httplib
except:
import http.client as httplib
class CouchPlugin(agent_util.Plugin):
textkey = "couch"
label = "CouchDB"
description = "Monitoring agent for CouchDB"
@classmethod
def get_metadata(self, config):
status = agent_util.SUPPORTED
msg = None
response = None
self.base_url = "/_stats"
if not config:
self.log.info("The [couch] config block is not found in the config file")
return {}
if "host" not in config or "port" not in config:
msg = "The host and port settings were not found in the [couch] block of the agent config file."
self.log.info(msg)
status = agent_util.MISCONFIGURED
if "base_url" in config:
self.base_url = config["base_url"]
if status == agent_util.SUPPORTED:
try:
couch_client = httplib.HTTPConnection(config["host"], config["port"])
couch_client.request("GET", "/")
response = couch_client.getresponse()
except Exception:
import sys
_, exception, _ = sys.exc_info()
status = agent_util.MISCONFIGURED
msg = "Unable to connect to CouchDB server to request metrics"
self.log.info("%s" % exception)
if response and response.status != 200:
status = agent_util.MISCONFIGURED
mgs = "CouchDB Stats not found at %s:%s" % (
config["host"],
config["port"],
)
self.log.info(msg)
return {
"couchdb.database_writes": {
"label": "Number of times a database was changed",
"options": None,
"status": status,
"error_message": msg,
"unit": "times",
},
"couchdb.database_reads": {
"label": "Number of times a document was read from a database",
"options": None,
"status": status,
"error_message": msg,
"unit": "times",
},
"couchdb.open_databases": {
"label": "Number of open databases",
"options": None,
"status": status,
"error_message": msg,
"unit": "databases",
},
"couchdb.open_os_files": {
"label": "Number of file descriptors CouchDB has open",
"options": None,
"status": status,
"error_message": msg,
"unit": "files",
},
"couchdb.request_time": {
"label": "Length of a request inside CouchDB without MochiWeb",
"options": None,
"status": status,
"error_message": msg,
"unit": "ms",
},
"httpd.bulk_requests": {
"label": "Number of bulk requests",
"options": None,
"status": status,
"error_message": msg,
"unit": "requests",
},
"httpd.requests": {
"label": "Number of HTTP requests",
"options": None,
"status": status,
"error_message": msg,
"unit": "requests",
},
"httpd.temporary_view_reads": {
"label": "Number of temporary view reads",
"options": None,
"status": status,
"error_message": msg,
"unit": "reads",
},
"httpd.view_reads": {
"label": "Number of view reads",
"options": None,
"status": status,
"error_message": msg,
"unit": "reads",
},
"httpd_request_methods.COPY": {
"label": "Number of HTTP COPY requests",
"options": None,
"status": status,
"error_message": msg,
"unit": "requests",
},
"httpd_request_methods.DELETE": {
"label": "Number of HTTP DELETE requests",
"options": None,
"status": status,
"error_message": msg,
"unit": "requests",
},
"httpd_request_methods.GET": {
"label": "Number of HTTP GET requests",
"options": None,
"status": status,
"error_message": msg,
"unit": "requests",
},
"httpd_request_methods.HEAD": {
"label": "Number of HTTP HEAD requests",
"options": None,
"status": status,
"error_message": msg,
"unit": "requests",
},
"httpd_request_methods.MOVE": {
"label": "Number of HTTP MOVE requests",
"options": None,
"status": status,
"error_message": msg,
"unit": "requests",
},
"httpd_request_methods.POST": {
"label": "Number of HTTP POST requests",
"options": None,
"status": status,
"error_message": msg,
"unit": "requests",
},
"httpd_request_methods.PUT": {
"label": "Number of HTTP PUT requests",
"options": None,
"status": status,
"error_message": msg,
"unit": "requests",
},
"httpd_status_codes.200": {
"label": "Number of HTTP 200 OK responses",
"options": None,
"status": status,
"error_message": msg,
"unit": "responses",
},
"httpd_status_codes.201": {
"label": "Number of HTTP 201 Created responses",
"options": None,
"status": status,
"error_message": msg,
"unit": "responses",
},
"httpd_status_codes.202": {
"label": "Number of HTTP 202 Accepted responses",
"options": None,
"status": status,
"error_message": msg,
"unit": "responses",
},
"httpd_status_codes.301": {
"label": "Number of HTTP 301 Moved Permanently responses",
"options": None,
"status": status,
"error_message": msg,
"unit": "responses",
},
"httpd_status_codes.304": {
"label": "Number of HTTP 304 Not Modified responses",
"options": None,
"status": status,
"error_message": msg,
"unit": "responses",
},
"httpd_status_codes.400": {
"label": "Number of HTTP 400 Bad Request responses",
"options": None,
"status": status,
"error_message": msg,
"unit": "responses",
},
"httpd_status_codes.401": {
"label": "Number of HTTP 401 Unauthorized responses",
"options": None,
"status": status,
"error_message": msg,
"unit": "responses",
},
"httpd_status_codes.403": {
"label": "Number of HTTP 403 Forbidden responses",
"options": None,
"status": status,
"error_message": msg,
"unit": "responses",
},
"httpd_status_codes.404": {
"label": "Number of HTTP 404 Not Found responses",
"options": None,
"status": status,
"error_message": msg,
"unit": "responses",
},
"httpd_status_codes.405": {
"label": "Number of HTTP 405 Method Not Allowed responses",
"options": None,
"status": status,
"error_message": msg,
"unit": "responses",
},
"httpd_status_codes.409": {
"label": "Number of HTTP 409 Conflict responses",
"options": None,
"status": status,
"error_message": msg,
"unit": "responses",
},
"httpd_status_codes.412": {
"label": "Number of HTTP 412 Precondition Failed responses",
"options": None,
"status": status,
"error_message": msg,
"unit": "responses",
},
"httpd_status_codes.500": {
"label": "Number of HTTP 500 Internal Server Error responses",
"options": None,
"status": status,
"error_message": msg,
"unit": "responses",
},
}
def check(self, textkey, data, config):
stat_area, stat_name = textkey.split(".")
url = "/".join([self.base_url, stat_area, stat_name]) + "?range=60"
try:
couch_client = httplib.HTTPConnection(config["host"], config["port"])
couch_client.request("GET", url)
except Exception:
return None
response = couch_client.getresponse()
stat = agent_util.json_loads(response.read())
return stat[stat_area][stat_name]["current"]
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