json.dumps raises error when the scrapy-fieldstats extension is enabled

https://github.com/my8100/scrapydweb/issues/88#issue-482699708

Hello,

I have an error:

[2019-08-20 07:41:48,062] INFO in werkzeug: 36.84.63.175 - - [20/Aug/2019 07:41:48] "POST /1/api/daemonstatus/ HTTP/1.1" 200 - {"downloader/request_bytes": 296, "downloader/request_count": 1, "downloader/request_method_count/GET": 1, "downloader/response_bytes": 2246568, "downloader/response_count": 1, "downloader/response_status_count/200": 1, "fields_coverage": {"distributor_id": "100%", "has_change": "100%", "last_update": "100%", "sk": "100%", "status": "100%", "stock": "100%"} Traceback (most recent call last): File "/root/Virtualenvs/scrapy/local/lib/python2.7/site-packages/logparser/common.py", line 163, in parse_crawler_stats return json.loads(text) File "/usr/lib/python2.7/json/__init__.py", line 339, in loads return _default_decoder.decode(s) File "/usr/lib/python2.7/json/decoder.py", line 364, in decode obj, end = self.raw_decode(s, idx=_w(s, 0).end()) File "/usr/lib/python2.7/json/decoder.py", line 380, in raw_decode obj, end = self.scan_once(s, idx) ValueError: Expecting object: line 12 column 37 (char 469) [2019-08-20 07:41:57,411] ERROR in logparser.logparser: Traceback (most recent call last): File "/root/Virtualenvs/scrapy/local/lib/python2.7/site-packages/logparser/logparser.py", line 467, in run data = self.handle_logfile(log_path) File "/root/Virtualenvs/scrapy/local/lib/python2.7/site-packages/logparser/logparser.py", line 255, in handle_logfile self.parse_appended_log(data, appended_log) File "/root/Virtualenvs/scrapy/local/lib/python2.7/site-packages/logparser/logparser.py", line 315, in parse_appended_log self.logger.debug("Parsed data_ from appended_log:\n%s", self.json_dumps(data_)) File "/root/Virtualenvs/scrapy/local/lib/python2.7/site-packages/logparser/logparser.py", line 284, in json_dumps return json.dumps(obj, ensure_ascii=False, indent=4, sort_keys=sort_keys) File "/usr/lib/python2.7/json/__init__.py", line 251, in dumps sort_keys=sort_keys, **kw).encode(obj) File "/usr/lib/python2.7/json/encoder.py", line 209, in encode chunks = list(chunks) File "/usr/lib/python2.7/json/encoder.py", line 434, in _iterencode for chunk in _iterencode_dict(o, _current_indent_level): File "/usr/lib/python2.7/json/encoder.py", line 408, in _iterencode_dict for chunk in chunks: File "/usr/lib/python2.7/json/encoder.py", line 408, in _iterencode_dict for chunk in chunks: File "/usr/lib/python2.7/json/encoder.py", line 442, in _iterencode o = _default(o) File "/usr/lib/python2.7/json/encoder.py", line 184, in default raise TypeError(repr(o) + " is not JSON serializable") TypeError: ValueError('Expecting object: line 12 column 37 (char 469)',) is not JSON serializable

I think this is due to the use of :

https://github.com/stummjr/scrapy-fieldstats

Which save stats as JSON:

"fields_coverage": {"distributor_id": "100%", "has_change": "100%", "last_update": "100%", "sk": "100%", "status": "100%", "stock": "100%"}

my8100 / logparser

json.dumps raises error when the scrapy-fieldstats extension is enabled #16