mirror of https://github.com/scrapy/scrapy.git
78 lines
2.6 KiB
Python
78 lines
2.6 KiB
Python
import os
|
|
import logging
|
|
|
|
from twisted.python.failure import Failure
|
|
|
|
from scrapy.utils.request import referer_str
|
|
|
|
SCRAPEDMSG = u"Scraped from %(src)s" + os.linesep + "%(item)s"
|
|
DROPPEDMSG = u"Dropped: %(exception)s" + os.linesep + "%(item)s"
|
|
CRAWLEDMSG = u"Crawled (%(status)s) %(request)s%(request_flags)s (referer: %(referer)s)%(response_flags)s"
|
|
|
|
|
|
class LogFormatter(object):
|
|
"""Class for generating log messages for different actions.
|
|
|
|
All methods must return a dictionary listing the parameters `level`, `msg`
|
|
and `args` which are going to be used for constructing the log message when
|
|
calling logging.log.
|
|
|
|
Dictionary keys for the method outputs:
|
|
* `level` should be the log level for that action, you can use those
|
|
from the python logging library: logging.DEBUG, logging.INFO,
|
|
logging.WARNING, logging.ERROR and logging.CRITICAL.
|
|
|
|
* `msg` should be a string that can contain different formatting
|
|
placeholders. This string, formatted with the provided `args`, is going
|
|
to be the log message for that action.
|
|
|
|
* `args` should be a tuple or dict with the formatting placeholders for
|
|
`msg`. The final log message is computed as output['msg'] %
|
|
output['args'].
|
|
"""
|
|
|
|
def crawled(self, request, response, spider):
|
|
request_flags = ' %s' % str(request.flags) if request.flags else ''
|
|
response_flags = ' %s' % str(response.flags) if response.flags else ''
|
|
return {
|
|
'level': logging.DEBUG,
|
|
'msg': CRAWLEDMSG,
|
|
'args': {
|
|
'status': response.status,
|
|
'request': request,
|
|
'request_flags' : request_flags,
|
|
'referer': referer_str(request),
|
|
'response_flags': response_flags,
|
|
# backward compatibility with Scrapy logformatter below 1.4 version
|
|
'flags': response_flags
|
|
}
|
|
}
|
|
|
|
def scraped(self, item, response, spider):
|
|
if isinstance(response, Failure):
|
|
src = response.getErrorMessage()
|
|
else:
|
|
src = response
|
|
return {
|
|
'level': logging.DEBUG,
|
|
'msg': SCRAPEDMSG,
|
|
'args': {
|
|
'src': src,
|
|
'item': item,
|
|
}
|
|
}
|
|
|
|
def dropped(self, item, exception, response, spider):
|
|
return {
|
|
'level': logging.WARNING,
|
|
'msg': DROPPEDMSG,
|
|
'args': {
|
|
'exception': exception,
|
|
'item': item,
|
|
}
|
|
}
|
|
|
|
@classmethod
|
|
def from_crawler(cls, crawler):
|
|
return cls()
|