/
base.py
565 lines (478 loc) · 19.9 KB
/
base.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
"""
elasticapm.base
~~~~~~~~~~
:copyright: (c) 2011-2017 Elasticsearch
Large portions are
:copyright: (c) 2010 by the Sentry Team, see AUTHORS for more details.
:license: BSD, see LICENSE for more details.
"""
from __future__ import absolute_import
import datetime
import logging
import os
import platform
import socket
import sys
import threading
import time
import zlib
from copy import deepcopy
import elasticapm
from elasticapm.conf import Config, constants
from elasticapm.traces import TransactionsStore, get_transaction
from elasticapm.transport.base import TransportException
from elasticapm.utils import compat, is_master_process
from elasticapm.utils import json_encoder as json
from elasticapm.utils import stacks, varmap
from elasticapm.utils.encoding import keyword_field, shorten, transform
from elasticapm.utils.module_import import import_string
__all__ = ('Client',)
class ClientState(object):
ONLINE = 1
ERROR = 0
def __init__(self):
self.status = self.ONLINE
self.last_check = None
self.retry_number = 0
def should_try(self):
if self.status == self.ONLINE:
return True
interval = min(self.retry_number, 6) ** 2
if time.time() - self.last_check > interval:
return True
return False
def set_fail(self):
self.status = self.ERROR
self.retry_number += 1
self.last_check = time.time()
def set_success(self):
self.status = self.ONLINE
self.last_check = None
self.retry_number = 0
def did_fail(self):
return self.status == self.ERROR
class Client(object):
"""
The base ElasticAPM client, which handles communication over the
HTTP API to the APM Server.
Will read default configuration from the environment variable
``ELASTIC_APM_APP_NAME`` and ``ELASTIC_APM_SECRET_TOKEN``
if available. ::
>>> from elasticapm import Client
>>> # Read configuration from environment
>>> client = Client()
>>> # Configure the client manually
>>> client = Client(
>>> include_paths=['my.package'],
>>> service_name='myapp',
>>> secret_token='secret_token',
>>> )
>>> # Record an exception
>>> try:
>>> 1/0
>>> except ZeroDivisionError:
>>> ident = client.capture_exception()
>>> print ("Exception caught; reference is %%s" %% ident)
"""
logger = logging.getLogger('elasticapm')
def __init__(self, config=None, **defaults):
# configure loggers first
cls = self.__class__
self.logger = logging.getLogger('%s.%s' % (cls.__module__, cls.__name__))
self.error_logger = logging.getLogger('elasticapm.errors')
self.state = ClientState()
self.instrumentation_store = None
self.processors = []
self.filter_exception_types_dict = {}
self._send_timer = None
self._transports = {}
self._service_info = None
self.config = Config(config, default_dict=defaults)
if self.config.errors:
for msg in self.config.errors.values():
self.error_logger.error(msg)
self.config.disable_send = True
return
self._transport_class = import_string(self.config.transport_class)
for exc_to_filter in (self.config.filter_exception_types or []):
exc_to_filter_type = exc_to_filter.split(".")[-1]
exc_to_filter_module = ".".join(exc_to_filter.split(".")[:-1])
self.filter_exception_types_dict[exc_to_filter_type] = exc_to_filter_module
self.processors = [import_string(p) for p in self.config.processors] if self.config.processors else []
if platform.python_implementation() == 'PyPy':
# PyPy introduces a `_functools.partial.__call__` frame due to our use
# of `partial` in AbstractInstrumentedModule
skip_modules = ('elasticapm.', '_functools')
else:
skip_modules = ('elasticapm.',)
def frames_collector_func():
return self._get_stack_info_for_trace(
stacks.iter_stack_frames(skip_top_modules=skip_modules),
library_frame_context_lines=self.config.source_lines_span_library_frames,
in_app_frame_context_lines=self.config.source_lines_span_app_frames,
with_locals=self.config.collect_local_variables in ('all', 'transactions'),
locals_processor_func=lambda local_var: varmap(lambda k, v: shorten(
v,
list_length=self.config.local_var_list_max_length,
string_length=self.config.local_var_max_length,
), local_var)
)
self.instrumentation_store = TransactionsStore(
frames_collector_func=frames_collector_func,
collect_frequency=self.config.flush_interval,
sample_rate=self.config.transaction_sample_rate,
max_spans=self.config.transaction_max_spans,
max_queue_size=self.config.max_queue_size,
ignore_patterns=self.config.transactions_ignore_patterns,
)
self.include_paths_re = stacks.get_path_regex(self.config.include_paths) if self.config.include_paths else None
self.exclude_paths_re = stacks.get_path_regex(self.config.exclude_paths) if self.config.exclude_paths else None
compat.atexit_register(self.close)
def get_handler(self, name):
return import_string(name)
def capture(self, event_type, date=None, context=None, custom=None, stack=None, handled=True, **kwargs):
"""
Captures and processes an event and pipes it off to Client.send.
"""
if event_type == 'Exception':
# never gather log stack for exceptions
stack = False
data = self._build_msg_for_logging(event_type, date=date, context=context, custom=custom, stack=stack,
handled=handled, **kwargs)
if data:
url = self.config.server_url + constants.ERROR_API_PATH
self.send(url, **data)
return data['errors'][0]['id']
def capture_message(self, message=None, param_message=None, **kwargs):
"""
Creates an event from ``message``.
>>> client.capture_message('My event just happened!')
"""
return self.capture('Message', message=message, param_message=param_message, **kwargs)
def capture_exception(self, exc_info=None, handled=True, **kwargs):
"""
Creates an event from an exception.
>>> try:
>>> exc_info = sys.exc_info()
>>> client.capture_exception(exc_info)
>>> finally:
>>> del exc_info
If exc_info is not provided, or is set to True, then this method will
perform the ``exc_info = sys.exc_info()`` and the requisite clean-up
for you.
"""
return self.capture('Exception', exc_info=exc_info, handled=handled, **kwargs)
def send(self, url, **data):
"""
Encodes and sends data to remote URL using configured transport
:param url: URL of endpoint
:param data: dictionary of data to send
"""
if self.config.disable_send or self._filter_exception_type(data):
return
payload = self.encode(data)
headers = {
'Content-Type': 'application/json',
'Content-Encoding': 'deflate',
'User-Agent': 'elasticapm-python/%s' % elasticapm.VERSION,
}
if self.config.secret_token:
headers['Authorization'] = "Bearer %s" % self.config.secret_token
if not self.state.should_try():
message = self._get_log_message(payload)
self.error_logger.error(message)
return
try:
self._send_remote(url=url, data=payload, headers=headers)
except Exception as e:
self.handle_transport_fail(exception=e)
def encode(self, data):
"""
Serializes ``data`` into a raw string.
"""
return zlib.compress(json.dumps(data).encode('utf8'))
def decode(self, data):
"""
Unserializes a string, ``data``.
"""
return json.loads(zlib.decompress(data).decode('utf8'))
def begin_transaction(self, transaction_type):
"""Register the start of a transaction on the client
"""
return self.instrumentation_store.begin_transaction(transaction_type)
def end_transaction(self, name, result=''):
transaction = self.instrumentation_store.end_transaction(result, name)
if self.instrumentation_store.should_collect():
self._collect_transactions()
if not self._send_timer:
# send first batch of data after config._wait_to_first_send
self._start_send_timer(timeout=min(self.config._wait_to_first_send, self.config.flush_interval))
return transaction
def close(self):
self._collect_transactions()
if self._send_timer:
self._stop_send_timer()
for url, transport in list(self._transports.items()):
transport.close()
self._transports.pop(url)
def handle_transport_success(self, **kwargs):
"""
Success handler called by the transport
"""
if kwargs.get('url'):
self.logger.info('Logged error at ' + kwargs['url'])
self.state.set_success()
def handle_transport_fail(self, exception=None, **kwargs):
"""
Failure handler called by the transport
"""
if isinstance(exception, TransportException):
message = self._get_log_message(exception.data)
self.error_logger.error(exception.args[0])
else:
# stdlib exception
message = str(exception)
self.error_logger.error(
'Failed to submit message: %r',
message,
exc_info=getattr(exception, 'print_trace', True)
)
self.state.set_fail()
def _collect_transactions(self):
self._stop_send_timer()
transactions = []
if self.instrumentation_store:
for transaction in self.instrumentation_store.get_all():
for processor in self.processors:
transaction = processor(self, transaction)
transactions.append(transaction)
if not transactions:
return
data = self._build_msg({
'transactions': transactions,
})
api_path = constants.TRANSACTIONS_API_PATH
self.send(self.config.server_url + api_path, **data)
self._start_send_timer()
def _start_send_timer(self, timeout=None):
timeout = timeout or self.config.flush_interval
self._send_timer = threading.Timer(timeout, self._collect_transactions)
self._send_timer.start()
def _stop_send_timer(self):
if self._send_timer and self._send_timer.is_alive() and not self._send_timer == threading.current_thread():
self._send_timer.cancel()
self._send_timer.join()
def _send_remote(self, url, data, headers=None):
if headers is None:
headers = {}
parsed = compat.urlparse.urlparse(url)
transport = self._get_transport(parsed)
if transport.async_mode:
transport.send_async(
data, headers,
success_callback=self.handle_transport_success,
fail_callback=self.handle_transport_fail
)
else:
url = transport.send(data, headers, timeout=self.config.server_timeout)
self.handle_transport_success(url=url)
def get_service_info(self):
if self._service_info:
return self._service_info
language_version = platform.python_version()
if hasattr(sys, 'pypy_version_info'):
runtime_version = '.'.join(map(str, sys.pypy_version_info[:3]))
else:
runtime_version = language_version
result = {
'name': keyword_field(self.config.service_name),
'environment': keyword_field(self.config.environment),
'version': keyword_field(self.config.service_version),
'agent': {
'name': 'python',
'version': elasticapm.VERSION,
},
'language': {
'name': 'python',
'version': keyword_field(platform.python_version()),
},
'runtime': {
'name': keyword_field(platform.python_implementation()),
'version': keyword_field(runtime_version),
}
}
if self.config.framework_name:
result['framework'] = {
'name': keyword_field(self.config.framework_name),
'version': keyword_field(self.config.framework_version),
}
self._service_info = result
return result
def get_process_info(self):
return {
'pid': os.getpid(),
'argv': sys.argv,
'title': None, # Note: if we implement this, the value needs to be wrapped with keyword_field
}
def get_system_info(self):
return {
'hostname': keyword_field(socket.gethostname()),
'architecture': platform.machine(),
'platform': platform.system().lower(),
}
def _build_msg(self, data=None, **kwargs):
data = data or {}
data['service'] = self.get_service_info()
data['process'] = self.get_process_info()
data['system'] = self.get_system_info()
data.update(**kwargs)
return data
def _build_msg_for_logging(self, event_type, date=None, context=None, custom=None, stack=None,
handled=True, **kwargs):
"""
Captures, processes and serializes an event into a dict object
"""
transaction = get_transaction()
if transaction:
transaction_context = deepcopy(transaction.context)
else:
transaction_context = {}
event_data = {}
if custom is None:
custom = {}
if not date:
date = datetime.datetime.utcnow()
if stack is None:
stack = self.config.auto_log_stacks
if context:
transaction_context.update(context)
context = transaction_context
else:
context = transaction_context
event_data['context'] = context
if transaction and transaction.tags:
context['tags'] = deepcopy(transaction.tags)
# if '.' not in event_type:
# Assume it's a builtin
event_type = 'elasticapm.events.%s' % event_type
handler = self.get_handler(event_type)
result = handler.capture(self, **kwargs)
if self._filter_exception_type(result):
return
# data (explicit) culprit takes over auto event detection
culprit = result.pop('culprit', None)
if custom.get('culprit'):
culprit = custom.pop('culprit')
for k, v in compat.iteritems(result):
if k not in event_data:
event_data[k] = v
log = event_data.get('log', {})
if stack and 'stacktrace' not in log:
if stack is True:
frames = stacks.iter_stack_frames(skip=3)
else:
frames = stack
frames = stacks.get_stack_info(
frames,
with_locals=self.config.collect_local_variables in ('errors', 'all'),
library_frame_context_lines=self.config.source_lines_error_library_frames,
in_app_frame_context_lines=self.config.source_lines_error_app_frames,
include_paths_re=self.include_paths_re,
exclude_paths_re=self.exclude_paths_re,
locals_processor_func=lambda local_var: varmap(lambda k, v: shorten(
v,
list_length=self.config.local_var_list_max_length,
string_length=self.config.local_var_max_length,
), local_var)
)
log['stacktrace'] = frames
if 'stacktrace' in log and not culprit:
culprit = stacks.get_culprit(
log['stacktrace'],
self.config.include_paths, self.config.exclude_paths
)
if 'level' in log and isinstance(log['level'], compat.integer_types):
log['level'] = logging.getLevelName(log['level']).lower()
if log:
event_data['log'] = log
if culprit:
event_data['culprit'] = culprit
if 'custom' in context:
context['custom'].update(custom)
else:
context['custom'] = custom
# Run the data through processors
for processor in self.processors:
event_data = processor(self, event_data)
# Make sure all data is coerced
event_data = transform(event_data)
if 'exception' in event_data:
event_data['exception']['handled'] = bool(handled)
event_data.update({
'timestamp': date.strftime(constants.TIMESTAMP_FORMAT),
})
transaction = get_transaction()
if transaction:
event_data['transaction'] = {'id': transaction.id}
return self._build_msg({'errors': [event_data]})
def _filter_exception_type(self, data):
exception = data.get('exception')
if not exception:
return False
exc_type = exception.get('type')
exc_module = exception.get('module')
if exc_module == 'None':
exc_module = None
if exc_type in self.filter_exception_types_dict:
exc_to_filter_module = self.filter_exception_types_dict[exc_type]
if not exc_to_filter_module or exc_to_filter_module == exc_module:
if exc_module:
exc_name = '%s.%s' % (exc_module, exc_type)
else:
exc_name = exc_type
self.logger.info(
'Ignored %s exception due to exception type filter',
exc_name
)
return True
return False
def _get_log_message(self, data):
# decode message so we can show the actual event
try:
data = self.decode(data)
except Exception:
message = '<failed decoding data>'
else:
message = data.pop('message', '<no message value>')
return message
def _get_transport(self, parsed_url):
if hasattr(self._transport_class, 'sync_transport') and is_master_process():
# when in the master process, always use SYNC mode. This avoids
# the danger of being forked into an inconsistent threading state
self.logger.info('Sending message synchronously while in master '
'process. PID: %s', os.getpid())
return self._transport_class.sync_transport(parsed_url)
if parsed_url not in self._transports:
self._transports[parsed_url] = self._transport_class(
parsed_url, verify_server_cert=self.config.verify_server_cert
)
return self._transports[parsed_url]
def _get_stack_info_for_trace(self, frames,
library_frame_context_lines=None,
in_app_frame_context_lines=None,
with_locals=True,
locals_processor_func=None):
"""Overrideable in derived clients to add frames/info, e.g. templates"""
return stacks.get_stack_info(
frames,
library_frame_context_lines=library_frame_context_lines,
in_app_frame_context_lines=in_app_frame_context_lines,
with_locals=with_locals,
include_paths_re=self.include_paths_re,
exclude_paths_re=self.exclude_paths_re,
locals_processor_func=locals_processor_func,
)
class DummyClient(Client):
"""Sends messages into an empty void"""
def send(self, url, **kwargs):
return None