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File Name : breadcrumbs.py

from __future__ import absolute_import

import os
import logging

try:
    from collections.abc import Mapping
except ImportError:
    # Python < 3.3
    from collections import Mapping
from time import time
from types import FunctionType

from raven.utils import once
from raven.utils.encoding import to_unicode
from raven.utils.compat import iteritems, get_code, text_type, string_types

CATEGORY_MAX_LENGTH = 128

LEVEL_MAX_LENGTH = 16

special_logging_handlers = []
special_logger_handlers = {}

logger = logging.getLogger('raven')

def event_payload_considered_equal(a, b):
    return (
        a['type'] == b['type']
        and a['level'] == b['level']
        and a['message'] == b['message']
        and a['category'] == b['category']
        and a['data'] == b['data']
    )

class BreadcrumbBuffer(object):

def __init__(self, limit=100, message_max_length=1024):
        self.buffer = []
        self.limit = limit
        self.message_max_length = message_max_length

def record(self, timestamp=None, level=None, message=None,
               category=None, data=None, type=None, processor=None):
        if not (message or data or processor):
            raise ValueError('You must pass either `message`, `data`, '
                             'or `processor`')
        if timestamp is None:
            timestamp = time()

# we format here to ensure we dont bloat memory due to message size
        result = (self.format({
            'type': type or 'default',
            'timestamp': float(timestamp),
            'level': level,
            # hardcode message length to prevent huge crumbs
            'message': message,
            'category': category,
            # TODO(dcramer): we should trim data
            'data': data,
        }), processor)
        self.buffer.append(result)
        del self.buffer[:-self.limit]

def clear(self):
        del self.buffer[:]

def format(self, result):
        result['message'] = to_unicode(result['message'])[:self.message_max_length] if result['message'] else None
        result['category'] = to_unicode(result['category'])[:CATEGORY_MAX_LENGTH] if result['category'] else None
        result['level'] = to_unicode(result['level'])[:LEVEL_MAX_LENGTH].lower() if result['level'] else None
        return result

def get_buffer(self):
        rv = []
        for idx, (payload, processor) in enumerate(self.buffer):
            if processor is not None:
                try:
                    processor(payload)
                except Exception:
                    raise
                    logger.exception('Failed to process breadcrumbs. Ignored')
                    payload = None
                else:
                    # we format here to ensure we dont bloat memory due to message size
                    payload = self.format(payload) if payload else None
                self.buffer[idx] = (payload, None)
            elif payload is not None:
                payload = self.format(payload)

if payload is not None and \
               (not rv or not event_payload_considered_equal(rv[-1], payload)):
                rv.append(payload)
        return rv

class BlackholeBreadcrumbBuffer(BreadcrumbBuffer):
    def record(self, *args, **kwargs):
        pass

def make_buffer(enabled=True):
    if enabled:
        return BreadcrumbBuffer()
    return BlackholeBreadcrumbBuffer()

def record_breadcrumb(type, *args, **kwargs):
    # Legacy alias
    kwargs['type'] = type
    return record(*args, **kwargs)

def record(message=None, timestamp=None, level=None, category=None,
           data=None, type=None, processor=None):
    """Records a breadcrumb for all active clients.  This is what integration
    code should use rather than invoking the `captureBreadcrumb` method
    on a specific client.
    """
    if timestamp is None:
        timestamp = time()
    for ctx in raven.context.get_active_contexts():
        ctx.breadcrumbs.record(timestamp, level, message, category,
                               data, type, processor)

def _record_log_breadcrumb(logger, level, msg, *args, **kwargs):
    for handler in special_logging_handlers:
        if handler(logger, level, msg, args, kwargs):
            return

handler = special_logger_handlers.get(logger.name)
    if handler is not None and handler(logger, level, msg, args, kwargs):
        return

def processor(data):
        formatted_msg = msg
        format_args = args

# Extract 'extra' key from kwargs and merge into data
        extra = kwargs.pop('extra', {})
        data_value = kwargs
        data_value.update(extra)

if args and len(args) == 1 and isinstance(args[0], Mapping) and args[0]:
            format_args = args[0]
            data_value.update(format_args)

# If people log bad things, this can happen.  Then just don't do
        # anything.
        try:
            formatted_msg = text_type(msg)
            if format_args:
                formatted_msg = msg % format_args
        except Exception:
            pass

# We do not want to include exc_info as argument because it often
        # lies (set to a constant value like 1 or True) or even if it's a
        # tuple it will not be particularly useful for us as we cannot
        # process it anyways.
        kwargs.pop('exc_info', None)
        data.update({
            'message': formatted_msg,
            'category': logger.name,
            'level': logging.getLevelName(level).lower(),
            'data': data_value,
        })
    record(processor=processor)

def _wrap_logging_method(meth, level=None):
    if not isinstance(meth, FunctionType):
        func = meth.im_func
    else:
        func = meth

# We were patched for raven before
    if getattr(func, '__patched_for_raven__', False):
        return

if level is None:
        args = ('level', 'msg')
        fwd = 'level, msg'
    else:
        args = ('msg',)
        fwd = '%d, msg' % level

code = get_code(func)

logging_srcfile = logging._srcfile
    if logging_srcfile is None:
        logging_srcfile = os.path.normpath(
            logging.currentframe.__code__.co_filename
        )

# This requires a bit of explanation why we're doing this.  Due to how
    # logging itself works we need to pretend that the method actually was
    # created within the logging module.  There are a few ways to detect
    # this and we fake all of them: we use the same function globals (the
    # one from the logging module), we create it entirely there which
    # means that also the filename is set correctly.  This fools the
    # detection code in logging and it makes logging itself skip past our
    # code when determining the code location.
    #
    # Because we point the globals to the logging module we now need to
    # refer to our own functions (original and the crumb recording
    # function) through a closure instead of the global scope.
    #
    # We also add a lot of newlines in front of the code so that the
    # code location lines up again in case someone runs inspect.getsource
    # on the function.
    ns = {}
    eval(compile('''%(offset)sif 1:
    def factory(original, record_crumb):
        def %(name)s(self, %(args)s, *args, **kwargs):
            record_crumb(self, %(fwd)s, *args, **kwargs)
            return original(self, %(args)s, *args, **kwargs)
        return %(name)s
    \n''' % {
        'offset': '\n' * (code.co_firstlineno - 3),
        'name': func.__name__,
        'args': ', '.join(args),
        'fwd': fwd,
        'level': level,
    }, logging_srcfile, 'exec'), logging.__dict__, ns)

new_func = ns['factory'](meth, _record_log_breadcrumb)
    new_func.__doc__ = func.__doc__

assert code.co_firstlineno == get_code(func).co_firstlineno

# In theory this should already be set correctly, but in some cases
    # it is not.  So override it.
    new_func.__module__ == func.__module__
    new_func.__name__ == func.__name__
    new_func.__patched_for_raven__ = True

return new_func

def _patch_logger():
    cls = logging.Logger

methods = {
        'debug': logging.DEBUG,
        'info': logging.INFO,
        'warning': logging.WARNING,
        'warn': logging.WARN,
        'error': logging.ERROR,
        'exception': logging.ERROR,
        'critical': logging.CRITICAL,
        'fatal': logging.FATAL
    }

for method_name, level in iteritems(methods):
        new_func = _wrap_logging_method(
            getattr(cls, method_name), level)
        setattr(logging.Logger, method_name, new_func)

logging.Logger.log = _wrap_logging_method(
        logging.Logger.log)

@once
def install_logging_hook():
    """Installs the logging hook if it was not installed yet.  Otherwise
    does nothing.
    """
    _patch_logger()

def ignore_logger(name_or_logger, allow_level=None):
    """Ignores a logger during breadcrumb recording.
    """
    def handler(logger, level, msg, args, kwargs):
        if allow_level is not None and \
           level >= allow_level:
            return False
        return True
    register_special_log_handler(name_or_logger, handler)

def register_special_log_handler(name_or_logger, callback):
    """Registers a callback for log handling. The callback is invoked
    with given arguments: `logger`, `level`, `msg`, `args` and `kwargs`
    which are the values passed to the logging system. If the callback
    returns true value the default handling is disabled. Only one callback
    can be registered per one logger name. Logger tree is not traversed
    so calling this method with `spammy_module` argument will not silence
    messages from `spammy_module.child`.
    """
    if isinstance(name_or_logger, string_types):
        name = name_or_logger
    else:
        name = name_or_logger.name
    special_logger_handlers[name] = callback

def register_logging_handler(callback):
    """Registers a callback for log handling.  The callback is invoked
    with given arguments: `logger`, `level`, `msg`, `args` and `kwargs`
    which are the values passed to the logging system.  If the callback
    returns true value the default handling is disabled. Registering
    multiple handlers is allowed.
    """
    special_logging_handlers.append(callback)

hooked_libraries = {}

def libraryhook(name):
    def decorator(f):
        f = once(f)
        hooked_libraries[name] = f
        return f
    return decorator

@libraryhook('requests')
def _hook_requests():
    try:
        from requests.sessions import Session
    except ImportError:
        return

real_send = Session.send

def send(self, request, *args, **kwargs):
        def _record_request(response):
            record(type='http', category='requests', data={
                'url': request.url,
                'method': request.method,
                'status_code': response and response.status_code or None,
                'reason': response and response.reason or None,
            })
        try:
            resp = real_send(self, request, *args, **kwargs)
        except Exception:
            _record_request(None)
            raise
        else:
            _record_request(resp)
        return resp

Session.send = send

ignore_logger('requests.packages.urllib3.connectionpool',
                  allow_level=logging.WARNING)

@libraryhook('httplib')
def _install_httplib():
    try:
        from httplib import HTTPConnection
    except ImportError:
        from http.client import HTTPConnection

real_putrequest = HTTPConnection.putrequest
    real_getresponse = HTTPConnection.getresponse

def putrequest(self, method, url, *args, **kwargs):
        self._raven_status_dict = status = {}
        host = self.host
        port = self.port
        default_port = self.default_port

def processor(data):
            real_url = url
            if not real_url.startswith(('http://', 'https://')):
                real_url = '%s://%s%s%s' % (
                    default_port == 443 and 'https' or 'http',
                    host,
                    port != default_port and ':%s' % port or '',
                    url,
                )
            data['data'] = {
                'url': real_url,
                'method': method,
            }
            data['data'].update(status)
            return data
        record(type='http', category='requests', processor=processor)
        return real_putrequest(self, method, url, *args, **kwargs)

def getresponse(self, *args, **kwargs):
        rv = real_getresponse(self, *args, **kwargs)
        status = getattr(self, '_raven_status_dict', None)
        if status is not None and 'status_code' not in status:
            status['status_code'] = rv.status
            status['reason'] = rv.reason
        return rv

HTTPConnection.putrequest = putrequest
    HTTPConnection.getresponse = getresponse

def hook_libraries(libraries):
    if libraries is None:
        libraries = hooked_libraries.keys()
    for lib in libraries:
        func = hooked_libraries.get(lib)
        if func is None:
            raise RuntimeError('Unknown library %r for hooking' % lib)
        func()

import raven.context

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	0755	2025-05-15 07:01:54
..	dir	-	root/root	0755	2025-09-06 07:00:47
__pycache__	dir	-	root/root	0755	2025-05-15 07:02:01
conf	dir	-	root/root	0755	2025-05-15 07:01:54
contrib	dir	-	root/root	0755	2025-05-15 07:01:54
data	dir	-	root/root	0755	2025-05-15 07:01:54
handlers	dir	-	root/root	0755	2025-05-15 07:01:54
scripts	dir	-	root/root	0755	2025-05-15 07:01:54
transport	dir	-	root/root	0755	2025-05-15 07:01:54
utils	dir	-	root/root	0755	2025-05-15 07:01:54
__init__.py	text/plain	1.21 KB	root/root	0644	2025-04-17 01:10:58
base.py	text/plain	29.4 KB	root/root	0644	2025-04-17 01:10:58
breadcrumbs.py	text/x-script.python	12.91 KB	root/root	0644	2025-04-17 01:10:58
context.py	text/plain	3.78 KB	root/root	0644	2025-04-17 01:10:58
events.py	text/plain	4.56 KB	root/root	0644	2025-04-17 01:10:58
exceptions.py	text/x-script.python	620 B	root/root	0644	2025-04-17 01:10:58
middleware.py	text/plain	3.51 KB	root/root	0644	2025-04-17 01:10:58
processors.py	text/plain	5.26 KB	root/root	0644	2025-04-17 01:10:58
versioning.py	text/x-script.python	2.48 KB	root/root	0644	2025-04-17 01:10:58

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