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config.py
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config.py
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# (C) Datadog, Inc. 2010-2016
# All rights reserved
# Licensed under Simplified BSD License (see LICENSE)
# stdlib
import ConfigParser
from cStringIO import StringIO
import glob
import imp
import inspect
import itertools
import logging
import logging.config
import logging.handlers
from optparse import OptionParser, Values
import os
import platform
import re
from socket import gaierror, gethostbyname
import string
import sys
import traceback
from urlparse import urlparse
# project
from util import check_yaml, config_to_yaml
from utils.platform import Platform, get_os
from utils.proxy import get_proxy
from utils.service_discovery.config import extract_agent_config
from utils.service_discovery.config_stores import CONFIG_FROM_FILE, TRACE_CONFIG
from utils.service_discovery.sd_backend import get_sd_backend, AUTO_CONFIG_DIR, SD_BACKENDS
from utils.subprocess_output import (
get_subprocess_output,
SubprocessOutputEmptyError,
)
from utils.windows_configuration import get_registry_conf
# CONSTANTS
AGENT_VERSION = "5.12.0"
DATADOG_CONF = "datadog.conf"
UNIX_CONFIG_PATH = '/etc/dd-agent'
MAC_CONFIG_PATH = '/opt/datadog-agent/etc'
DEFAULT_CHECK_FREQUENCY = 15 # seconds
LOGGING_MAX_BYTES = 10 * 1024 * 1024
SDK_INTEGRATIONS_DIR = 'integrations'
SD_PIPE_NAME = "dd-service_discovery"
SD_PIPE_UNIX_PATH = '/opt/datadog-agent/run'
SD_PIPE_WIN_PATH = "\\\\.\\pipe\\{pipename}"
log = logging.getLogger(__name__)
OLD_STYLE_PARAMETERS = [
('apache_status_url', "apache"),
('cacti_mysql_server', "cacti"),
('couchdb_server', "couchdb"),
('elasticsearch', "elasticsearch"),
('haproxy_url', "haproxy"),
('hudson_home', "Jenkins"),
('memcache_', "memcached"),
('mongodb_server', "mongodb"),
('mysql_server', "mysql"),
('nginx_status_url', "nginx"),
('postgresql_server', "postgres"),
('redis_urls', "redis"),
('varnishstat', "varnish"),
('WMI', "WMI"),
]
NAGIOS_OLD_CONF_KEYS = [
'nagios_log',
'nagios_perf_cfg'
]
LEGACY_DATADOG_URLS = [
"app.datadoghq.com",
"app.datad0g.com",
]
JMX_SD_CONF_TEMPLATE = '.jmx.{}.yaml'
class PathNotFound(Exception):
pass
def get_parsed_args():
parser = OptionParser()
parser.add_option('-A', '--autorestart', action='store_true', default=False,
dest='autorestart')
parser.add_option('-d', '--dd_url', action='store', default=None,
dest='dd_url')
parser.add_option('-u', '--use-local-forwarder', action='store_true',
default=False, dest='use_forwarder')
parser.add_option('-v', '--verbose', action='store_true', default=False,
dest='verbose',
help='Print out stacktraces for errors in checks')
parser.add_option('-p', '--profile', action='store_true', default=False,
dest='profile', help='Enable Developer Mode')
try:
options, args = parser.parse_args()
except SystemExit:
# Ignore parse errors
options, args = Values({'autorestart': False,
'dd_url': None,
'use_forwarder': False,
'verbose': False,
'profile': False}), []
return options, args
def get_version():
return AGENT_VERSION
# Return url endpoint, here because needs access to version number
def get_url_endpoint(default_url, endpoint_type='app'):
parsed_url = urlparse(default_url)
if parsed_url.netloc not in LEGACY_DATADOG_URLS:
return default_url
subdomain = parsed_url.netloc.split(".")[0]
# Replace https://app.datadoghq.com in https://5-2-0-app.agent.datadoghq.com
return default_url.replace(subdomain,
"{0}-{1}.agent".format(
get_version().replace(".", "-"),
endpoint_type))
def skip_leading_wsp(f):
"Works on a file, returns a file-like object"
return StringIO("\n".join(map(string.strip, f.readlines())))
def _windows_commondata_path():
"""Return the common appdata path, using ctypes
From http://stackoverflow.com/questions/626796/\
how-do-i-find-the-windows-common-application-data-folder-using-python
"""
import ctypes
from ctypes import wintypes, windll
CSIDL_COMMON_APPDATA = 35
_SHGetFolderPath = windll.shell32.SHGetFolderPathW
_SHGetFolderPath.argtypes = [wintypes.HWND,
ctypes.c_int,
wintypes.HANDLE,
wintypes.DWORD, wintypes.LPCWSTR]
path_buf = wintypes.create_unicode_buffer(wintypes.MAX_PATH)
_SHGetFolderPath(0, CSIDL_COMMON_APPDATA, 0, 0, path_buf)
return path_buf.value
def _windows_extra_checksd_path():
common_data = _windows_commondata_path()
return os.path.join(common_data, 'Datadog', 'checks.d')
def _windows_checksd_path():
if hasattr(sys, 'frozen'):
# we're frozen - from py2exe
prog_path = os.path.dirname(sys.executable)
return _checksd_path(os.path.normpath(os.path.join(prog_path, '..', 'agent')))
else:
cur_path = os.path.dirname(__file__)
return _checksd_path(cur_path)
def _config_path(directory):
path = os.path.join(directory, DATADOG_CONF)
if os.path.exists(path):
return path
raise PathNotFound(path)
def _confd_path(directory):
path = os.path.join(directory, 'conf.d')
if os.path.exists(path):
return path
raise PathNotFound(path)
def _checksd_path(directory):
path = os.path.join(directory, 'checks.d')
if os.path.exists(path):
return path
raise PathNotFound(path)
def _is_affirmative(s):
if s is None:
return False
# int or real bool
if isinstance(s, int):
return bool(s)
# try string cast
return s.lower() in ('yes', 'true', '1')
def get_config_path(cfg_path=None, os_name=None):
# Check if there's an override and if it exists
if cfg_path is not None and os.path.exists(cfg_path):
return cfg_path
# Check if there's a config stored in the current agent directory
try:
path = os.path.realpath(__file__)
path = os.path.dirname(path)
return _config_path(path)
except PathNotFound as e:
pass
# Check for an OS-specific path, continue on not-found exceptions
bad_path = ''
try:
if Platform.is_windows():
common_data = _windows_commondata_path()
return _config_path(os.path.join(common_data, 'Datadog'))
elif Platform.is_mac():
return _config_path(MAC_CONFIG_PATH)
else:
return _config_path(UNIX_CONFIG_PATH)
except PathNotFound as e:
if len(e.args) > 0:
bad_path = e.args[0]
# If all searches fail, exit the agent with an error
sys.stderr.write("Please supply a configuration file at %s or in the directory where "
"the Agent is currently deployed.\n" % bad_path)
sys.exit(3)
def get_default_bind_host():
try:
gethostbyname('localhost')
except gaierror:
log.warning("localhost seems undefined in your hosts file, using 127.0.0.1 instead")
return '127.0.0.1'
return 'localhost'
def get_histogram_aggregates(configstr=None):
if configstr is None:
return None
try:
vals = configstr.split(',')
valid_values = ['min', 'max', 'median', 'avg', 'sum', 'count']
result = []
for val in vals:
val = val.strip()
if val not in valid_values:
log.warning("Ignored histogram aggregate {0}, invalid".format(val))
continue
else:
result.append(val)
except Exception:
log.exception("Error when parsing histogram aggregates, skipping")
return None
return result
def get_histogram_percentiles(configstr=None):
if configstr is None:
return None
result = []
try:
vals = configstr.split(',')
for val in vals:
try:
val = val.strip()
floatval = float(val)
if floatval <= 0 or floatval >= 1:
raise ValueError
if len(val) > 4:
log.warning("Histogram percentiles are rounded to 2 digits: {0} rounded"
.format(floatval))
result.append(float(val[0:4]))
except ValueError:
log.warning("Bad histogram percentile value {0}, must be float in ]0;1[, skipping"
.format(val))
except Exception:
log.exception("Error when parsing histogram percentiles, skipping")
return None
return result
def clean_dd_url(url):
url = url.strip()
if not url.startswith('http'):
url = 'https://' + url
return url[:-1] if url.endswith('/') else url
def remove_empty(string_array):
return filter(lambda x: x, string_array)
def get_config(parse_args=True, cfg_path=None, options=None, can_query_registry=True):
if parse_args:
options, _ = get_parsed_args()
# General config
agentConfig = {
'check_freq': DEFAULT_CHECK_FREQUENCY,
'dogstatsd_port': 8125,
'dogstatsd_target': 'http://localhost:17123',
'graphite_listen_port': None,
'hostname': None,
'listen_port': None,
'tags': None,
'use_ec2_instance_id': False, # DEPRECATED
'version': get_version(),
'watchdog': True,
'additional_checksd': '/etc/dd-agent/checks.d/',
'bind_host': get_default_bind_host(),
'statsd_metric_namespace': None,
'utf8_decoding': False
}
if Platform.is_mac():
agentConfig['additional_checksd'] = '/opt/datadog-agent/etc/checks.d'
elif Platform.is_windows():
agentConfig['additional_checksd'] = _windows_extra_checksd_path()
# Config handling
try:
# Find the right config file
path = os.path.realpath(__file__)
path = os.path.dirname(path)
config_path = get_config_path(cfg_path, os_name=get_os())
config = ConfigParser.ConfigParser()
config.readfp(skip_leading_wsp(open(config_path)))
# bulk import
for option in config.options('Main'):
agentConfig[option] = config.get('Main', option)
# Store developer mode setting in the agentConfig
if config.has_option('Main', 'developer_mode'):
agentConfig['developer_mode'] = _is_affirmative(config.get('Main', 'developer_mode'))
# Allow an override with the --profile option
if options is not None and options.profile:
agentConfig['developer_mode'] = True
# Core config
#ap
if not config.has_option('Main', 'api_key'):
log.warning(u"No API key was found. Aborting.")
sys.exit(2)
if not config.has_option('Main', 'dd_url'):
log.warning(u"No dd_url was found. Aborting.")
sys.exit(2)
# Endpoints
dd_urls = map(clean_dd_url, config.get('Main', 'dd_url').split(','))
api_keys = map(lambda el: el.strip(), config.get('Main', 'api_key').split(','))
# For collector and dogstatsd
agentConfig['dd_url'] = dd_urls[0]
agentConfig['api_key'] = api_keys[0]
# Forwarder endpoints logic
# endpoints is:
# {
# 'https://app.datadoghq.com': ['api_key_abc', 'api_key_def'],
# 'https://app.example.com': ['api_key_xyz']
# }
endpoints = {}
dd_urls = remove_empty(dd_urls)
api_keys = remove_empty(api_keys)
if len(dd_urls) == 1:
if len(api_keys) > 0:
endpoints[dd_urls[0]] = api_keys
else:
assert len(dd_urls) == len(api_keys), 'Please provide one api_key for each url'
for i, dd_url in enumerate(dd_urls):
endpoints[dd_url] = endpoints.get(dd_url, []) + [api_keys[i]]
agentConfig['endpoints'] = endpoints
# Forwarder or not forwarder
agentConfig['use_forwarder'] = options is not None and options.use_forwarder
if agentConfig['use_forwarder']:
listen_port = 17123
if config.has_option('Main', 'listen_port'):
listen_port = int(config.get('Main', 'listen_port'))
agentConfig['dd_url'] = "http://{}:{}".format(agentConfig['bind_host'], listen_port)
# FIXME: Legacy dd_url command line switch
elif options is not None and options.dd_url is not None:
agentConfig['dd_url'] = options.dd_url
# Forwarder timeout
agentConfig['forwarder_timeout'] = 20
if config.has_option('Main', 'forwarder_timeout'):
agentConfig['forwarder_timeout'] = int(config.get('Main', 'forwarder_timeout'))
# Extra checks.d path
# the linux directory is set by default
if config.has_option('Main', 'additional_checksd'):
agentConfig['additional_checksd'] = config.get('Main', 'additional_checksd')
if config.has_option('Main', 'use_dogstatsd'):
agentConfig['use_dogstatsd'] = config.get('Main', 'use_dogstatsd').lower() in ("yes", "true")
else:
agentConfig['use_dogstatsd'] = True
# Service discovery
if config.has_option('Main', 'service_discovery_backend'):
try:
additional_config = extract_agent_config(config)
agentConfig.update(additional_config)
except:
log.error('Failed to load the agent configuration related to '
'service discovery. It will not be used.')
# Concerns only Windows
if config.has_option('Main', 'use_web_info_page'):
agentConfig['use_web_info_page'] = config.get('Main', 'use_web_info_page').lower() in ("yes", "true")
else:
agentConfig['use_web_info_page'] = True
# local traffic only? Default to no
agentConfig['non_local_traffic'] = False
if config.has_option('Main', 'non_local_traffic'):
agentConfig['non_local_traffic'] = config.get('Main', 'non_local_traffic').lower() in ("yes", "true")
# DEPRECATED
if config.has_option('Main', 'use_ec2_instance_id'):
use_ec2_instance_id = config.get('Main', 'use_ec2_instance_id')
# translate yes into True, the rest into False
agentConfig['use_ec2_instance_id'] = (use_ec2_instance_id.lower() == 'yes')
if config.has_option('Main', 'check_freq'):
try:
agentConfig['check_freq'] = int(config.get('Main', 'check_freq'))
except Exception:
pass
# Custom histogram aggregate/percentile metrics
if config.has_option('Main', 'histogram_aggregates'):
agentConfig['histogram_aggregates'] = get_histogram_aggregates(config.get('Main', 'histogram_aggregates'))
if config.has_option('Main', 'histogram_percentiles'):
agentConfig['histogram_percentiles'] = get_histogram_percentiles(config.get('Main', 'histogram_percentiles'))
# Disable Watchdog (optionally)
if config.has_option('Main', 'watchdog'):
if config.get('Main', 'watchdog').lower() in ('no', 'false'):
agentConfig['watchdog'] = False
# Optional graphite listener
if config.has_option('Main', 'graphite_listen_port'):
agentConfig['graphite_listen_port'] = \
int(config.get('Main', 'graphite_listen_port'))
else:
agentConfig['graphite_listen_port'] = None
# Dogstatsd config
dogstatsd_defaults = {
'dogstatsd_port': 8125,
'dogstatsd_target': 'http://' + agentConfig['bind_host'] + ':17123',
}
for key, value in dogstatsd_defaults.iteritems():
if config.has_option('Main', key):
agentConfig[key] = config.get('Main', key)
else:
agentConfig[key] = value
# Create app:xxx tags based on monitored apps
agentConfig['create_dd_check_tags'] = config.has_option('Main', 'create_dd_check_tags') and \
_is_affirmative(config.get('Main', 'create_dd_check_tags'))
# Forwarding to external statsd server
if config.has_option('Main', 'statsd_forward_host'):
agentConfig['statsd_forward_host'] = config.get('Main', 'statsd_forward_host')
if config.has_option('Main', 'statsd_forward_port'):
agentConfig['statsd_forward_port'] = int(config.get('Main', 'statsd_forward_port'))
# Optional config
# FIXME not the prettiest code ever...
if config.has_option('Main', 'use_mount'):
agentConfig['use_mount'] = _is_affirmative(config.get('Main', 'use_mount'))
if options is not None and options.autorestart:
agentConfig['autorestart'] = True
elif config.has_option('Main', 'autorestart'):
agentConfig['autorestart'] = _is_affirmative(config.get('Main', 'autorestart'))
if config.has_option('Main', 'check_timings'):
agentConfig['check_timings'] = _is_affirmative(config.get('Main', 'check_timings'))
if config.has_option('Main', 'exclude_process_args'):
agentConfig['exclude_process_args'] = _is_affirmative(config.get('Main', 'exclude_process_args'))
try:
filter_device_re = config.get('Main', 'device_blacklist_re')
agentConfig['device_blacklist_re'] = re.compile(filter_device_re)
except ConfigParser.NoOptionError:
pass
# Dogstream config
if config.has_option("Main", "dogstream_log"):
# Older version, single log support
log_path = config.get("Main", "dogstream_log")
if config.has_option("Main", "dogstream_line_parser"):
agentConfig["dogstreams"] = ':'.join([log_path, config.get("Main", "dogstream_line_parser")])
else:
agentConfig["dogstreams"] = log_path
elif config.has_option("Main", "dogstreams"):
agentConfig["dogstreams"] = config.get("Main", "dogstreams")
if config.has_option("Main", "nagios_perf_cfg"):
agentConfig["nagios_perf_cfg"] = config.get("Main", "nagios_perf_cfg")
if config.has_option("Main", "use_curl_http_client"):
agentConfig["use_curl_http_client"] = _is_affirmative(config.get("Main", "use_curl_http_client"))
else:
# Default to False as there are some issues with the curl client and ELB
agentConfig["use_curl_http_client"] = False
if config.has_section('WMI'):
agentConfig['WMI'] = {}
for key, value in config.items('WMI'):
agentConfig['WMI'][key] = value
if config.has_option("Main", "skip_ssl_validation"):
agentConfig["skip_ssl_validation"] = _is_affirmative(config.get("Main", "skip_ssl_validation"))
agentConfig["collect_instance_metadata"] = True
if config.has_option("Main", "collect_instance_metadata"):
agentConfig["collect_instance_metadata"] = _is_affirmative(config.get("Main", "collect_instance_metadata"))
agentConfig["proxy_forbid_method_switch"] = False
if config.has_option("Main", "proxy_forbid_method_switch"):
agentConfig["proxy_forbid_method_switch"] = _is_affirmative(config.get("Main", "proxy_forbid_method_switch"))
agentConfig["collect_ec2_tags"] = False
if config.has_option("Main", "collect_ec2_tags"):
agentConfig["collect_ec2_tags"] = _is_affirmative(config.get("Main", "collect_ec2_tags"))
agentConfig["utf8_decoding"] = False
if config.has_option("Main", "utf8_decoding"):
agentConfig["utf8_decoding"] = _is_affirmative(config.get("Main", "utf8_decoding"))
agentConfig["gce_updated_hostname"] = False
if config.has_option("Main", "gce_updated_hostname"):
agentConfig["gce_updated_hostname"] = _is_affirmative(config.get("Main", "gce_updated_hostname"))
except ConfigParser.NoSectionError as e:
sys.stderr.write('Config file not found or incorrectly formatted.\n')
sys.exit(2)
except ConfigParser.ParsingError as e:
sys.stderr.write('Config file not found or incorrectly formatted.\n')
sys.exit(2)
except ConfigParser.NoOptionError as e:
sys.stderr.write('There are some items missing from your config file, but nothing fatal [%s]' % e)
# Storing proxy settings in the agentConfig
agentConfig['proxy_settings'] = get_proxy(agentConfig)
if agentConfig.get('ca_certs', None) is None:
agentConfig['ssl_certificate'] = get_ssl_certificate(get_os(), 'datadog-cert.pem')
else:
agentConfig['ssl_certificate'] = agentConfig['ca_certs']
# On Windows, check for api key in registry if default api key
# this code should never be used and is only a failsafe
if Platform.is_windows() and agentConfig['api_key'] == 'APIKEYHERE' and can_query_registry:
registry_conf = get_registry_conf(config)
agentConfig.update(registry_conf)
return agentConfig
def get_system_stats(proc_path=None):
systemStats = {
'machine': platform.machine(),
'platform': sys.platform,
'processor': platform.processor(),
'pythonV': platform.python_version(),
}
platf = sys.platform
try:
if Platform.is_linux(platf):
if not proc_path:
proc_path = "/proc"
proc_cpuinfo = os.path.join(proc_path,'cpuinfo')
output, _, _ = get_subprocess_output(['grep', 'model name', proc_cpuinfo], log)
systemStats['cpuCores'] = len(output.splitlines())
if Platform.is_darwin(platf) or Platform.is_freebsd(platf):
output, _, _ = get_subprocess_output(['sysctl', 'hw.ncpu'], log)
systemStats['cpuCores'] = int(output.split(': ')[1])
except SubprocessOutputEmptyError as e:
log.warning("unable to retrieve number of cpuCores. Failed with error %s", e)
if Platform.is_linux(platf):
systemStats['nixV'] = platform.dist()
elif Platform.is_darwin(platf):
systemStats['macV'] = platform.mac_ver()
elif Platform.is_freebsd(platf):
version = platform.uname()[2]
systemStats['fbsdV'] = ('freebsd', version, '') # no codename for FreeBSD
elif Platform.is_win32(platf):
systemStats['winV'] = platform.win32_ver()
return systemStats
def set_win32_cert_path():
"""In order to use tornado.httpclient with the packaged .exe on Windows we
need to override the default ceritifcate location which is based on the path
to tornado and will give something like "C:\path\to\program.exe\tornado/cert-file".
If pull request #379 is accepted (https://github.com/facebook/tornado/pull/379) we
will be able to override this in a clean way. For now, we have to monkey patch
tornado.httpclient._DEFAULT_CA_CERTS
"""
if hasattr(sys, 'frozen'):
# we're frozen - from py2exe
prog_path = os.path.dirname(sys.executable)
crt_path = os.path.join(prog_path, 'ca-certificates.crt')
else:
cur_path = os.path.dirname(__file__)
crt_path = os.path.join(cur_path, 'packaging', 'datadog-agent', 'win32',
'install_files', 'ca-certificates.crt')
import tornado.simple_httpclient
log.info("Windows certificate path: %s" % crt_path)
tornado.simple_httpclient._DEFAULT_CA_CERTS = crt_path
def set_win32_requests_ca_bundle_path():
"""In order to allow `requests` to validate SSL requests with the packaged .exe on Windows,
we need to override the default certificate location which is based on the location of the
requests or certifi libraries.
We override the path directly in requests.adapters so that the override works even when the
`requests` lib has already been imported
"""
import requests.adapters
if hasattr(sys, 'frozen'):
# we're frozen - from py2exe
prog_path = os.path.dirname(sys.executable)
ca_bundle_path = os.path.join(prog_path, 'cacert.pem')
requests.adapters.DEFAULT_CA_BUNDLE_PATH = ca_bundle_path
log.info("Default CA bundle path of the requests library: {0}"
.format(requests.adapters.DEFAULT_CA_BUNDLE_PATH))
def get_confd_path(osname=None):
try:
cur_path = os.path.dirname(os.path.realpath(__file__))
return _confd_path(cur_path)
except PathNotFound as e:
pass
bad_path = ''
try:
if Platform.is_windows():
common_data = _windows_commondata_path()
return _confd_path(os.path.join(common_data, 'Datadog'))
elif Platform.is_mac():
return _confd_path(MAC_CONFIG_PATH)
else:
return _confd_path(UNIX_CONFIG_PATH)
except PathNotFound as e:
if len(e.args) > 0:
bad_path = e.args[0]
raise PathNotFound(bad_path)
def get_checksd_path(osname=None):
if Platform.is_windows():
return _windows_checksd_path()
# Mac & Linux
else:
# Unix only will look up based on the current directory
# because checks.d will hang with the other python modules
cur_path = os.path.dirname(os.path.realpath(__file__))
return _checksd_path(cur_path)
def get_sdk_integrations_path(osname=None):
if not osname:
osname = get_os()
if os.environ.get('INTEGRATIONS_DIR'):
if os.environ.get('TRAVIS'):
path = os.environ['TRAVIS_BUILD_DIR']
elif os.environ.get('CIRCLECI'):
path = os.path.join(
os.environ['HOME'],
os.environ['CIRCLE_PROJECT_REPONAME']
)
elif os.environ.get('APPVEYOR'):
path = os.environ['APPVEYOR_BUILD_FOLDER']
else:
cur_path = os.environ['INTEGRATIONS_DIR']
path = os.path.join(cur_path, '..') # might need tweaking in the future.
else:
cur_path = os.path.dirname(os.path.realpath(__file__))
path = os.path.join(cur_path, '..', SDK_INTEGRATIONS_DIR)
if os.path.exists(path):
return path
raise PathNotFound(path)
def get_jmx_pipe_path():
if Platform.is_windows():
pipe_path = SD_PIPE_WIN_PATH
else:
pipe_path = SD_PIPE_UNIX_PATH
if not os.path.isdir(pipe_path):
pipe_path = '/tmp'
return pipe_path
def get_auto_confd_path(osname=None):
"""Used for service discovery which only works for Unix"""
return os.path.join(get_confd_path(osname), AUTO_CONFIG_DIR)
def get_win32service_file(osname, filename):
# This file is needed to log in the event viewer for windows
if osname == 'windows':
if hasattr(sys, 'frozen'):
# we're frozen - from py2exe
prog_path = os.path.dirname(sys.executable)
path = os.path.join(prog_path, filename)
else:
cur_path = os.path.dirname(__file__)
path = os.path.join(cur_path, filename)
if os.path.exists(path):
log.debug("Certificate file found at %s" % str(path))
return path
else:
cur_path = os.path.dirname(os.path.realpath(__file__))
path = os.path.join(cur_path, filename)
if os.path.exists(path):
return path
return None
def get_ssl_certificate(osname, filename):
# The SSL certificate is needed by tornado in case of connection through a proxy
# Also used by flare's requests on Windows
if osname == 'windows':
if hasattr(sys, 'frozen'):
# we're frozen - from py2exe
prog_path = os.path.dirname(sys.executable)
path = os.path.join(prog_path, filename)
else:
cur_path = os.path.dirname(__file__)
path = os.path.join(cur_path, filename)
if os.path.exists(path):
log.debug("Certificate file found at %s" % str(path))
return path
else:
cur_path = os.path.dirname(os.path.realpath(__file__))
path = os.path.join(cur_path, filename)
if os.path.exists(path):
return path
log.info("Certificate file NOT found at %s" % str(path))
return None
def _get_check_class(check_name, check_path):
'''Return the corresponding check class for a check name if available.'''
from checks import AgentCheck
check_class = None
try:
check_module = imp.load_source('checksd_%s' % check_name, check_path)
except Exception as e:
traceback_message = traceback.format_exc()
# There is a configuration file for that check but the module can't be imported
log.exception('Unable to import check module %s.py from checks.d' % check_name)
return {'error': e, 'traceback': traceback_message}
# We make sure that there is an AgentCheck class defined
check_class = None
classes = inspect.getmembers(check_module, inspect.isclass)
for _, clsmember in classes:
if clsmember == AgentCheck:
continue
if issubclass(clsmember, AgentCheck):
check_class = clsmember
if AgentCheck in clsmember.__bases__:
continue
else:
break
return check_class
def _deprecated_configs(agentConfig):
""" Warn about deprecated configs
"""
deprecated_checks = {}
deprecated_configs_enabled = [v for k, v in OLD_STYLE_PARAMETERS if len([l for l in agentConfig if l.startswith(k)]) > 0]
for deprecated_config in deprecated_configs_enabled:
msg = "Configuring %s in datadog.conf is not supported anymore. Please use conf.d" % deprecated_config
deprecated_checks[deprecated_config] = {'error': msg, 'traceback': None}
log.error(msg)
return deprecated_checks
def _file_configs_paths(osname, agentConfig):
""" Retrieve all the file configs and return their paths
"""
try:
confd_path = get_confd_path(osname)
all_file_configs = glob.glob(os.path.join(confd_path, '*.yaml'))
all_default_configs = glob.glob(os.path.join(confd_path, '*.yaml.default'))
except PathNotFound as e:
log.error("No conf.d folder found at '%s' or in the directory where the Agent is currently deployed.\n" % e.args[0])
sys.exit(3)
if all_default_configs:
current_configs = set([_conf_path_to_check_name(conf) for conf in all_file_configs])
for default_config in all_default_configs:
if not _conf_path_to_check_name(default_config) in current_configs:
all_file_configs.append(default_config)
# Compatibility code for the Nagios checks if it's still configured
# in datadog.conf
# FIXME: 6.x, should be removed
if not any('nagios' in config for config in itertools.chain(*all_file_configs)):
# check if it's configured in datadog.conf the old way
if any([nagios_key in agentConfig for nagios_key in NAGIOS_OLD_CONF_KEYS]):
all_file_configs.append('deprecated/nagios')
return all_file_configs
def _service_disco_configs(agentConfig):
""" Retrieve all the service disco configs and return their conf dicts
"""
if agentConfig.get('service_discovery') and agentConfig.get('service_discovery_backend') in SD_BACKENDS:
try:
log.info("Fetching service discovery check configurations.")
sd_backend = get_sd_backend(agentConfig=agentConfig)
service_disco_configs = sd_backend.get_configs()
except Exception:
log.exception("Loading service discovery configurations failed.")
return {}
else:
service_disco_configs = {}
return service_disco_configs
def _conf_path_to_check_name(conf_path):
f = os.path.splitext(os.path.split(conf_path)[1])
if f[1] and f[1] == ".default":
f = os.path.splitext(f[0])
return f[0]
def get_checks_places(osname, agentConfig):
""" Return a list of methods which, when called with a check name, will each return a check path to inspect
"""
try:
checksd_path = get_checksd_path(osname)
except PathNotFound as e:
log.error(e.args[0])
sys.exit(3)
places = [lambda name: os.path.join(agentConfig['additional_checksd'], '%s.py' % name)]
try:
sdk_integrations = get_sdk_integrations_path(osname)
places.append(lambda name: os.path.join(sdk_integrations, name, 'check.py'))
except PathNotFound:
log.debug('No sdk integrations path found')
places.append(lambda name: os.path.join(checksd_path, '%s.py' % name))
return places
def _load_file_config(config_path, check_name, agentConfig):
if config_path == 'deprecated/nagios':
log.warning("Configuring Nagios in datadog.conf is deprecated "
"and will be removed in a future version. "
"Please use conf.d")
check_config = {'instances': [dict((key, value) for (key, value) in agentConfig.iteritems() if key in NAGIOS_OLD_CONF_KEYS)]}
return True, check_config, {}
try:
check_config = check_yaml(config_path)
except Exception as e:
log.exception("Unable to parse yaml config in %s" % config_path)
traceback_message = traceback.format_exc()
return False, None, {check_name: {'error': str(e), 'traceback': traceback_message}}
return True, check_config, {}
def get_valid_check_class(check_name, check_path):
check_class = _get_check_class(check_name, check_path)
if not check_class:
log.error('No check class (inheriting from AgentCheck) found in %s.py' % check_name)
return False, None, {}
# this means we are actually looking at a load failure
elif isinstance(check_class, dict):
return False, None, {check_name: check_class}
return True, check_class, {}
def _initialize_check(check_config, check_name, check_class, agentConfig):
init_config = check_config.get('init_config') or {}
instances = check_config['instances']
try:
try:
check = check_class(check_name, init_config=init_config,
agentConfig=agentConfig, instances=instances)
except TypeError as e:
# Backwards compatibility for checks which don't support the
# instances argument in the constructor.
check = check_class(check_name, init_config=init_config,
agentConfig=agentConfig)
check.instances = instances
except Exception as e:
log.exception('Unable to initialize check %s' % check_name)
traceback_message = traceback.format_exc()
return {}, {check_name: {'error': e, 'traceback': traceback_message}}
else:
return {check_name: check}, {}
def _update_python_path(check_config):
# Add custom pythonpath(s) if available
if 'pythonpath' in check_config:
pythonpath = check_config['pythonpath']
if not isinstance(pythonpath, list):
pythonpath = [pythonpath]
sys.path.extend(pythonpath)
def load_check_from_places(check_config, check_name, checks_places, agentConfig):
'''Find a check named check_name in the given checks_places and try to initialize it with the given check_config.
A failure (`load_failure`) can happen when the check class can't be validated or when the check can't be initialized. '''
load_success, load_failure = {}, {}
for check_path_builder in checks_places:
check_path = check_path_builder(check_name)
if not os.path.exists(check_path):
continue
check_is_valid, check_class, load_failure = get_valid_check_class(check_name, check_path)
if not check_is_valid:
continue
load_success, load_failure = _initialize_check(
check_config, check_name, check_class, agentConfig
)
_update_python_path(check_config)
log.debug('Loaded %s' % check_path)
break # we successfully initialized this check
return load_success, load_failure
def load_check_directory(agentConfig, hostname):
''' Return the initialized checks from checks.d, and a mapping of checks that failed to
initialize. Only checks that have a configuration
file in conf.d will be returned. '''
from checks import AGENT_METRICS_CHECK_NAME
from jmxfetch import JMX_CHECKS
initialized_checks = {}
init_failed_checks = {}
deprecated_checks = {}
agentConfig['checksd_hostname'] = hostname