def _get_content_from_api(self, query: str, start_date: datetime,
end_date: datetime) -> str:
"""Fetch the posts data from thw ch api and return the http response content."""
ch_monitor_id = int(query)
log.debug("crimson_hexagon_twitter.fetch_posts")
ua = UserAgent()
ua.set_max_size(100 * 1024 * 1024)
ua.set_timeout(90)
ua.set_timing([1, 2, 4, 8, 16, 32, 64, 128, 256, 512])
config = TopicsMineConfig()
api_key = config.crimson_hexagon_api_key()
start_arg = start_date.strftime('%Y-%m-%d')
end_arg = (end_date + datetime.timedelta(days=1)).strftime('%Y-%m-%d')
url = (
"https://api.crimsonhexagon.com/api/monitor/posts?auth=%s&id=%d&start=%s&end=%s&extendLimit=true"
% (api_key, ch_monitor_id, start_arg, end_arg))
log.debug("crimson hexagon url: " + url)
response = ua.get(url)
if not response.is_success():
raise McPostsCHTwitterDataException("error fetching posts: " +
response.decoded_content())
return response.decoded_content()
class _SitemapWebClient(AbstractWebClient):
# Some webservers might be generating huge sitemaps on the fly, so this is why it's rather big.
__HTTP_REQUEST_TIMEOUT = 60
__slots__ = [
'__ua',
]
def __init__(self):
self.__ua = UserAgent()
self.__ua.set_timeout(self.__HTTP_REQUEST_TIMEOUT)
def set_max_response_data_length(self,
max_response_data_length: int) -> None:
self.__ua.set_max_size(max_response_data_length)
def get(self, url: str) -> AbstractWebClientResponse:
ua_response = self.__ua.get(url)
if ua_response.is_success():
return _SitemapWebClientResponse(ua_response=ua_response)
else:
return WebClientErrorResponse(
message=ua_response.status_line(),
retryable=ua_response.code() in RETRYABLE_HTTP_STATUS_CODES,
)
def _get_user_agent() -> UserAgent:
"""Get a properly configured user agent."""
ua = UserAgent()
ua.set_max_size(100 * 1024 * 1024)
ua.set_timeout(90)
ua.set_timing([1, 2, 4, 8, 16, 32, 64, 128, 256, 512])
return ua
def __wait_for_solr_to_start(config: Optional[CommonConfig]) -> None:
"""Wait for Solr to start and collections to become available, if needed."""
# search for an empty or rare term here because searching for *:* sometimes causes a timeout for some reason
sample_select_url = f"{config.solr_url()}/mediacloud/select?q=BOGUSQUERYTHATRETURNSNOTHINGNADA&rows=1&wt=json"
connected = False
for retry in range(0, __SOLR_STARTUP_TIMEOUT + 1):
if retry > 0:
log.debug(f"Retrying Solr connection ({retry})...")
try:
ua = UserAgent()
ua.set_timeout(1)
response = ua.get(sample_select_url)
if not response.is_success():
raise Exception(f"Unable to connect: {response.status_line()}")
if not response.decoded_content():
raise Exception("Response is empty.")
try:
result = response.decoded_json()
except Exception as ex:
raise Exception(f"Unable to decode response: {ex}")
if not isinstance(result, dict):
raise Exception(
f"Result is not a dictionary: {response.decoded_content()}"
)
if 'response' not in result:
raise Exception(
f"Response doesn't have 'response' key: {response.decoded_content()}"
)
except Exception as ex:
log.warning(f"Solr is down, will retry: {ex}")
time.sleep(1)
else:
log.debug("Solr is up!")
connected = True
break
if not connected:
raise McSolrRequestDidNotStartInTimeException(
f"Solr is still down after {__SOLR_STARTUP_TIMEOUT} retries, giving up"
)
def fetch_posts(self, query: dict, start_date: datetime,
end_date: datetime) -> list:
"""Fetch tweets from archive.org that match the given query for the given day."""
ua = UserAgent()
ua.set_max_size(100 * 1024 * 1024)
ua.set_timeout(90)
ua.set_timing([1, 2, 4, 8, 16, 32, 64, 128, 256, 512])
end_date = end_date + datetime.timedelta(days=1)
start_arg = start_date.strftime('%Y-%m-%d')
end_arg = end_date.strftime('%Y-%m-%d')
enc_query = urlencode({
'q': query,
'date_from': start_arg,
'date_to': end_arg
})
url = "https://searchtweets.archivelab.org/export?" + enc_query
log.debug("archive.org url: " + url)
response = ua.get(url)
if not response.is_success():
raise McPostsArchiveTwitterDataException(
"error fetching posts: " + response.decoded_content())
decoded_content = response.decoded_content()
# sometimes we get null characters, which choke the csv module
decoded_content = decoded_content.replace('\x00', '')
meta_tweets = []
lines = decoded_content.splitlines()[1:]
for row in csv.reader(lines, delimiter="\t"):
fields = 'user_name user_screen_name lang text timestamp_ms url'.split(
' ')
meta_tweet = {}
for i, field in enumerate(fields):
meta_tweet[field] = row[i] if i < len(row) else ''
if 'url' not in meta_tweet or meta_tweet['url'] == '':
log.warning("meta_tweet '%s' does not have a url" % str(row))
continue
meta_tweet['tweet_id'] = get_tweet_id_from_url(meta_tweet['url'])
meta_tweets.append(meta_tweet)
add_tweets_to_meta_tweets(meta_tweets)
return meta_tweets
def fetch_meta_tweets_from_ch(query: str, day: str) -> list:
"""Fetch day of tweets from crimson hexagon"""
ch_monitor_id = int(query)
ua = UserAgent()
ua.set_max_size(100 * 1024 * 1024)
ua.set_timeout(90)
ua.set_timing([1, 2, 4, 8, 16, 32, 64, 128, 256, 512])
config = mediawords.util.config.get_config()
if 'crimson_hexagon' not in config or 'key' not in config[
'crimson_hexagon']:
raise McFetchTopicTweetsConfigException(
"no key in mediawords.yml at //crimson_hexagon/key.")
key = config['crimson_hexagon']['key']
next_day = day + datetime.timedelta(days=1)
day_arg = day.strftime('%Y-%m-%d')
next_day_arg = next_day.strftime('%Y-%m-%d')
url = (
"https://api.crimsonhexagon.com/api/monitor/posts?auth=%s&id=%d&start=%s&end=%s&extendLimit=true"
% (key, ch_monitor_id, day_arg, next_day_arg))
log.debug("crimson hexagon url: " + url)
response = ua.get(url)
if not response.is_success():
raise McFetchTopicTweetsDataException("error fetching posts: " +
response.decoded_content())
decoded_content = response.decoded_content()
data = dict(mediawords.util.parse_json.decode_json(decoded_content))
if 'status' not in data or not data['status'] == 'success':
raise McFetchTopicTweetsDataException("Unknown response status: " +
str(data))
meta_tweets = data['posts']
for mt in meta_tweets:
mt['tweet_id'] = get_tweet_id_from_url(mt['url'])
return meta_tweets
def fetch_posts(ch_monitor_id: int, day: datetime.datetime) -> dict:
"""Implement fetch_posts on ch api using the config data from mediawords.yml."""
ua = UserAgent()
ua.set_max_size(100 * 1024 * 1024)
ua.set_timeout(90)
ua.set_timing([1, 2, 4, 8, 16, 32, 64, 128, 256, 512])
config = mediawords.util.config.get_config()
if 'crimson_hexagon' not in config or 'key' not in config[
'crimson_hexagon']:
raise McFetchTopicTweetsConfigException(
"no key in mediawords.yml at //crimson_hexagon/key.")
key = config['crimson_hexagon']['key']
next_day = day + datetime.timedelta(days=1)
day_arg = day.strftime('%Y-%m-%d')
next_day_arg = next_day.strftime('%Y-%m-%d')
url = (
"https://api.crimsonhexagon.com/api/monitor/posts?auth=%s&id=%d&start=%s&end=%s&extendLimit=true"
% (key, ch_monitor_id, day_arg, next_day_arg))
log.debug("crimson hexagon url: " + url)
response = ua.get(url)
if not response.is_success():
raise McFetchTopicTweetsDataException("error fetching posts: " +
response.decoded_content())
decoded_content = response.decoded_content()
data = dict(mediawords.util.parse_json.decode_json(decoded_content))
if 'status' not in data or not data['status'] == 'success':
raise McFetchTopicTweetsDataException("Unknown response status: " +
str(data))
return data
def test_api_request(self):
"""Make an API request, see if it succeeds."""
credentials = self.univision_credentials()
handler = DownloadFeedUnivisionHandler(crawler_config=self._mock_crawler_config())
api_request_url = handler._api_request_url_with_signature_from_config(api_url=credentials.url)
assert api_request_url, 'API request URL is not empty'
ua = UserAgent()
ua.set_timeout(30)
response = ua.get(api_request_url)
assert response.is_success(), 'API request was successful'
json_string = response.decoded_content()
assert json_string, 'JSON response is not empty'
json = response.decoded_json()
assert json.get('status', None) == 'success', "JSON response was successful"
assert 'data' in json, 'JSON response has "data" key'
def fetch_posts(ch_monitor_id: int, day: datetime.datetime) -> dict:
"""Implement fetch_posts on ch api using the config data from mediawords.yml."""
ua = UserAgent()
ua.set_max_size(100 * 1024 * 1024)
ua.set_timeout(90)
ua.set_timing([1, 2, 4, 8, 16, 32, 64, 128, 256, 512])
config = mediawords.util.config.get_config()
if 'crimson_hexagon' not in config or 'key' not in config['crimson_hexagon']:
raise McFetchTopicTweetsConfigException("no key in mediawords.yml at //crimson_hexagon/key.")
key = config['crimson_hexagon']['key']
next_day = day + datetime.timedelta(days=1)
day_arg = day.strftime('%Y-%m-%d')
next_day_arg = next_day.strftime('%Y-%m-%d')
url = ("https://api.crimsonhexagon.com/api/monitor/posts?auth=%s&id=%d&start=%s&end=%s&extendLimit=true" %
(key, ch_monitor_id, day_arg, next_day_arg))
log.debug("crimson hexagon url: " + url)
response = ua.get(url)
if not response.is_success():
raise McFetchTopicTweetsDataException("error fetching posts: " + response.decoded_content())
decoded_content = response.decoded_content()
data = dict(mediawords.util.parse_json.decode_json(decoded_content))
if 'status' not in data or not data['status'] == 'success':
raise McFetchTopicTweetsDataException("Unknown response status: " + str(data))
return data
def __annotate_text(self, text: str) -> Union[dict, list]:
"""Fetch JSON annotation for text, decode it into dictionary / list."""
text = decode_object_from_bytes_if_needed(text)
if text is None:
fatal_error("Text is None.")
if len(text) == 0:
# Annotators accept empty strings, but that might happen with some stories so we're just die()ing here
raise McJSONAnnotationFetcherException("Text is empty.")
log.info("Annotating %d characters of text..." % len(text))
# Trim the text because that's what the annotator will do, and if the text is empty, we want to fail early
# without making a request to the annotator at all
text = text.strip()
if self.__TEXT_LENGTH_LIMIT > 0:
text_length = len(text)
if text_length > self.__TEXT_LENGTH_LIMIT:
log.warning(
"Text length (%d) has exceeded the request text length limit (%d) so I will truncate it."
% (
text_length,
self.__TEXT_LENGTH_LIMIT,
))
text = text[:self.__TEXT_LENGTH_LIMIT]
# Make a request
ua = UserAgent()
ua.set_timing([1, 2, 4, 8])
ua.set_timeout(self.__HTTP_TIMEOUT)
ua.set_max_size(None)
request = None
try:
request = self._request_for_text(text=text)
if request is None:
raise McJSONAnnotationFetcherException(
"Returned request is None.")
except Exception as ex:
# Assume that this is some sort of a programming error too
fatal_error(
"Unable to create annotator request for text '%s': %s" % (
text,
str(ex),
))
# Wait for the service's HTTP port to become open as the service might be
# still starting up somewhere
uri = furl(request.url())
hostname = str(uri.host)
port = int(uri.port)
assert hostname, f"URL hostname is not set for URL {url}"
assert port, f"API URL port is not set for URL {url}"
if not wait_for_tcp_port_to_open(
port=port,
hostname=hostname,
retries=self.__ANNOTATOR_SERVICE_TIMEOUT,
):
# Instead of throwing an exception, just crash the whole application
# because there's no point in continuing on running it whatsoever.
fatal_error(
"Annotator service at {url} didn't come up in {timeout} seconds, exiting..."
.format(
url=url,
timeout=self.__ANNOTATOR_SERVICE_TIMEOUT,
))
log.debug("Sending request to %s..." % request.url())
response = ua.request(request)
log.debug("Response received.")
# Force UTF-8 encoding on the response because the server might not always
# return correct "Content-Type"
results_string = response.decoded_utf8_content()
if not response.is_success():
# Error; determine whether we should be blamed for making a malformed
# request, or is it an extraction error
log.warning("Request failed: %s" % response.decoded_content())
if response.code() == HTTPStatus.REQUEST_TIMEOUT.value:
# Raise on request timeouts without retrying anything because those usually mean that we posted
# something funky to the annotator service and it got stuck
raise McJSONAnnotationFetcherException(
"The request timed out, giving up; text length: %d; text: %s"
% (
len(text),
text,
))
if response.error_is_client_side():
# Error was generated by the user agent client code; likely didn't reach server at all (timeout,
# unresponsive host, etc.)
fatal_error("User agent error: %s: %s" % (
response.status_line(),
results_string,
))
else:
# Error was generated by server
http_status_code = response.code()
if http_status_code == HTTPStatus.METHOD_NOT_ALLOWED.value \
or http_status_code == HTTPStatus.BAD_REQUEST.value:
# Not POST, empty POST
fatal_error('%s: %s' % (
response.status_line(),
results_string,
))
elif http_status_code == HTTPStatus.INTERNAL_SERVER_ERROR.value:
# Processing error -- raise so that the error gets caught and logged into a database
raise McJSONAnnotationFetcherException(
'Annotator service was unable to process the download: %s'
% results_string)
else:
# Shutdown the extractor on unconfigured responses
fatal_error('Unknown HTTP response: %s: %s' % (
response.status_line(),
results_string,
))
if results_string is None or len(results_string) == 0:
raise McJSONAnnotationFetcherException(
"Annotator returned nothing for text: %s" % text)
log.debug("Parsing response's JSON...")
results = None
try:
results = decode_json(results_string)
if results is None:
raise McJSONAnnotationFetcherException(
"Returned JSON is None.")
except Exception as ex:
# If the JSON is invalid, it's probably something broken with the remote service, so that's why whe do
# fatal_error() here
fatal_error("Unable to parse JSON response: %s\nJSON string: %s" %
(
str(ex),
results_string,
))
log.debug("Done parsing response's JSON.")
response_is_valid = False
try:
response_is_valid = self._fetched_annotation_is_valid(results)
except Exception as ex:
fatal_error(
"Unable to determine whether response is valid: %s\nJSON string: %s"
% (str(ex), results_string))
if not response_is_valid:
fatal_error("Annotator response is invalid for JSON string: %s" %
results_string)
log.info("Done annotating %d characters of text." % len(text))
return results
def _api_request(node: str, params: Dict[str, Union[str, List[str]]], config: FacebookConfig) -> Union[dict, list]:
"""
Make Facebook API request.
Return successful or failed API response if we were able to make a request. Throw McFacebookException subclass if
something went wrong.
:param node: Facebook API node to call.
:param params: Dictionary of parameters to pass to the API; values might be either strings of lists of strings if
multiple values with the same key have to be passed.
:param config: Facebook configuration object.
:return: API response.
"""
node = decode_object_from_bytes_if_needed(node)
params = decode_object_from_bytes_if_needed(params)
if node is None:
raise McFacebookInvalidParametersException("Node is undefined (node might be an empty string).")
if not isinstance(params, dict):
raise McFacebookInvalidParametersException("Params is not a dict.")
if not config.is_enabled():
raise McFacebookInvalidConfigurationException("Facebook API is not enabled.")
if not config.api_endpoint():
raise McFacebookInvalidConfigurationException("Facebook API endpoint URL is not configured.")
api_uri = furl(config.api_endpoint())
api_uri.path.segments.append(node)
if not isinstance(params, dict):
raise McFacebookInvalidParametersException("Parameters should be a dictionary.")
for key, values in params.items():
if key is None or values is None:
raise McFacebookInvalidParametersException("Both 'key' and 'value' must be defined.")
if isinstance(values, str):
# A single value
api_uri = api_uri.add({key: values})
elif isinstance(values, list):
# Multiple values for the same key
for value in values:
api_uri = api_uri.add({key: value})
else:
raise McFacebookInvalidParametersException("Values is neither a string nor a list.")
log.debug(f"Facebook API final URL (pre-authentication): {api_uri.url}")
app_id = config.app_id()
app_secret = config.app_secret()
if not (app_id and app_secret):
raise McFacebookInvalidConfigurationException("Both app ID and app secret must be set.")
access_token = f"{app_id}|{app_secret}"
api_uri = api_uri.add({'access_token': access_token})
# Last API error to set as an exception message if we run out of retries
last_api_error = None
data = None
for retry in range(1, __FACEBOOK_GRAPH_API_RETRY_COUNT + 1):
if retry > 1:
log.warning(f"Retrying #{retry}...")
ua = UserAgent()
ua.set_timeout(__FACEBOOK_API_HTTP_TIMEOUT)
try:
response = ua.get(api_uri.url)
except Exception as ex:
# UserAgent dying should be pretty rare, so if it does die, it means that we probably have messed up
# something in the code or arguments
raise McFacebookInvalidParametersException(f"UserAgent died while trying to fetch Facebook API URL: {ex}")
decoded_content = response.decoded_content()
if not decoded_content:
# some stories consistenty return empty content, so just return a soft error and move on
raise McFacebookSoftFailureException("Decoded content is empty.")
try:
data = decode_json(decoded_content)
except Exception as ex:
if 'something went wrong' in decoded_content:
# Occasionally Facebook returns a "something went wrong" 500 page on which we'd like to retry the
# request
last_api_error = f"API responded with 'Something went wrong', will retry"
log.error(last_api_error)
continue
else:
# If we can't seem to decode JSON and it's not a "something went wrong" issue, we should give up
raise McFacebookUnexpectedAPIResponseException(
response=decoded_content,
error_message=f"Unable to decode JSON response: {ex}",
)
if response.is_success():
# Response was successful and we managed to decode JSON -- break from the retry loop
return data
else:
if 'error' not in data:
# More likely than not it's our problem so consider it a hard failure
raise McFacebookUnexpectedAPIResponseException(
response=decoded_content,
error_message=f"No 'error' key but HTTP status is not 2xx",
)
error = data['error']
error_code = error.get('code', -1)
error_message = error.get('message', 'unknown message')
if error_code in __FACEBOOK_GRAPH_API_RETRYABLE_ERROR_CODES:
# Retryable error
last_api_error = (
f"Retryable error {error_code}: {error_message}, "
f"will retry in {config.seconds_to_wait_between_retries()} seconds"
)
log.error(last_api_error)
time.sleep(config.seconds_to_wait_between_retries())
continue
else:
# Non-retryable error
log.error(f"Non-retryable error {error_code}: {error_message}")
return data
# At this point, we've retried the request for some time but nothing worked
log.error(f"Ran out of retries; last error: {last_api_error}")
return data
def solr_request(path: str,
params: SolrParams = None,
content: Union[str, SolrParams] = None,
content_type: Optional[str] = None,
config: Optional[CommonConfig] = None) -> str:
"""
Send a request to Solr.
:param path: Solr path to call, e.g. 'select'.
:param params: Query parameters to add to the path.
:param content: String or dictionary content to send via POST request.
:param content_type: Content-Type for the POST content.
:param config: (testing) Configuration object
:return: Raw response content on success, raise exception on error.
"""
path = decode_object_from_bytes_if_needed(path)
params = decode_object_from_bytes_if_needed(params)
content = decode_object_from_bytes_if_needed(content)
content_type = decode_object_from_bytes_if_needed(content_type)
if not path:
raise McSolrRequestInvalidParamsException("Path is unset.")
if params:
if not isinstance(params, dict):
raise McSolrRequestInvalidParamsException(
f"Params is not a dictionary: {params}")
if content:
if not (isinstance(content, str) or isinstance(content, dict)):
raise McSolrRequestInvalidParamsException(
f"Content is not a string not a dictionary: {content}")
if not config:
config = CommonConfig()
solr_url = config.solr_url()
if not params:
params = {}
abs_uri = furl(f"{solr_url}/mediacloud/{path}")
abs_uri = abs_uri.set(params)
abs_url = str(abs_uri)
ua = UserAgent()
ua.set_timeout(__QUERY_HTTP_TIMEOUT)
ua.set_max_size(None)
# Remediate CVE-2017-12629
q_param = str(params.get('q', ''))
if 'xmlparser' in q_param.lower():
raise McSolrRequestQueryErrorException(
"XML queries are not supported.")
# Solr might still be starting up so wait for it to expose the collections list
__wait_for_solr_to_start(config=config)
if content:
if not content_type:
fallback_content_type = 'text/plain; charset=utf-8'
log.warning(
f"Content-Type is not set; falling back to '{fallback_content_type}'"
)
content_type = fallback_content_type
if isinstance(content, dict):
content = urlencode(content, doseq=True)
content_encoded = content.encode('utf-8', errors='replace')
request = Request(method='POST', url=abs_url)
request.set_header(name='Content-Type', value=content_type)
request.set_header(name='Content-Length',
value=str(len(content_encoded)))
request.set_content(content_encoded)
else:
request = Request(method='GET', url=abs_url)
log.debug(f"Sending Solr request: {request}")
response = ua.request(request)
if not response.is_success():
error_message = __solr_error_message_from_response(response=response)
raise McSolrRequestQueryErrorException(
f"Error fetching Solr response: {error_message}")
return response.decoded_content()
def __annotate_text(self, text: str) -> Union[dict, list]:
"""Fetch JSON annotation for text, decode it into dictionary / list."""
text = decode_object_from_bytes_if_needed(text)
if text is None:
fatal_error("Text is None.")
if len(text) == 0:
# Annotators accept empty strings, but that might happen with some stories so we're just die()ing here
raise McJSONAnnotationFetcherException("Text is empty.")
log.info(f"Annotating {len(text)} characters of text...")
# Trim the text because that's what the annotator will do, and if the text is empty, we want to fail early
# without making a request to the annotator at all
text = text.strip()
if self.__TEXT_LENGTH_LIMIT > 0:
text_length = len(text)
if text_length > self.__TEXT_LENGTH_LIMIT:
log.warning(
f"Text length ({text_length}) has exceeded the request text length limit"
f"({self.__TEXT_LENGTH_LIMIT}) so I will truncate it.")
text = text[:self.__TEXT_LENGTH_LIMIT]
# Make a request
ua = UserAgent()
ua.set_timing([1, 2, 4, 8])
ua.set_timeout(self.__HTTP_TIMEOUT)
ua.set_max_size(None)
request = None
try:
request = self._request_for_text(text=text)
if request is None:
raise McJSONAnnotationFetcherException(
"Returned request is None.")
except Exception as ex:
# Assume that this is some sort of a programming error too
fatal_error(
f"Unable to create annotator request for text '{text}': {ex}")
# Wait for the service's HTTP port to become open as the service might be
# still starting up somewhere
uri = furl(request.url())
hostname = str(uri.host)
port = int(uri.port)
assert hostname, f"URL hostname is not set for URL {request.url()}"
assert port, f"API URL port is not set for URL {request.url()}"
if not wait_for_tcp_port_to_open(
port=port,
hostname=hostname,
retries=self.__ANNOTATOR_SERVICE_TIMEOUT,
):
# Instead of throwing an exception, just crash the whole application
# because there's no point in continuing on running it whatsoever.
fatal_error(
f"Annotator service at {request.url()} didn't come up in {self.__ANNOTATOR_SERVICE_TIMEOUT} seconds, "
f"exiting...")
log.debug(f"Sending request to {request.url()}...")
# Try requesting a few times because sometimes it throws a connection error, e.g.:
#
# WARNING mediawords.util.web.user_agent: Client-side error while processing request <PreparedRequest [POST]>:
# ('Connection aborted.', ConnectionResetError(104, 'Connection reset by peer'))
# WARNING mediawords.annotator.fetcher: Request failed: ('Connection aborted.', ConnectionResetError(104,
# 'Connection reset by peer'))
# ERROR mediawords.util.process: User agent error: 400 Client-side error: ('Connection aborted.',
# ConnectionResetError(104, 'Connection reset by peer'))
response = None
retries = 60
sleep_between_retries = 1
for retry in range(1, retries + 1):
if retry > 1:
log.warning(f"Retrying ({retry} / {retries})...")
response = ua.request(request)
if response.is_success():
break
else:
if response.error_is_client_side():
log.error(
f"Request failed on the client side: {response.decoded_content()}"
)
time.sleep(sleep_between_retries)
else:
break
log.debug("Response received.")
# Force UTF-8 encoding on the response because the server might not always
# return correct "Content-Type"
results_string = response.decoded_utf8_content()
if not response.is_success():
# Error; determine whether we should be blamed for making a malformed
# request, or is it an extraction error
log.warning(f"Request failed: {response.decoded_content()}")
if response.code() == HTTPStatus.REQUEST_TIMEOUT.value:
# Raise on request timeouts without retrying anything because those usually mean that we posted
# something funky to the annotator service and it got stuck
raise McJSONAnnotationFetcherException(
f"The request timed out, giving up; text length: {len(text)}; text: {text}"
)
if response.error_is_client_side():
# Error was generated by the user agent client code; likely didn't reach server at all (timeout,
# unresponsive host, etc.)
fatal_error(
f"User agent error: {response.status_line()}: {results_string}"
)
else:
# Error was generated by server
http_status_code = response.code()
if http_status_code == HTTPStatus.METHOD_NOT_ALLOWED.value \
or http_status_code == HTTPStatus.BAD_REQUEST.value:
# Not POST, empty POST
fatal_error(f'{response.status_line()}: {results_string}')
elif http_status_code == HTTPStatus.INTERNAL_SERVER_ERROR.value:
# Processing error -- raise so that the error gets caught and logged into a database
raise McJSONAnnotationFetcherException(
f'Annotator service was unable to process the download: {results_string}'
)
else:
# Shutdown the extractor on unconfigured responses
fatal_error(
f'Unknown HTTP response: {response.status_line()}: {results_string}'
)
if results_string is None or len(results_string) == 0:
raise McJSONAnnotationFetcherException(
f"Annotator returned nothing for text: {text}")
log.debug("Parsing response's JSON...")
results = None
try:
results = decode_json(results_string)
if results is None:
raise McJSONAnnotationFetcherException(
"Returned JSON is None.")
except Exception as ex:
# If the JSON is invalid, it's probably something broken with the remote service, so that's why whe do
# fatal_error() here
fatal_error(
f"Unable to parse JSON response: {ex}\nJSON string: {results_string}"
)
log.debug("Done parsing response's JSON.")
response_is_valid = False
try:
response_is_valid = self._fetched_annotation_is_valid(results)
except Exception as ex:
fatal_error(
f"Unable to determine whether response is valid: {ex}\nJSON string: {results_string}"
)
if not response_is_valid:
fatal_error(
f"Annotator response is invalid for JSON string: {results_string}"
)
log.info(f"Done annotating {len(text)} characters of text.")
return results
def extract_article_html_from_page_html(content: str, config: Optional[CommonConfig] = None) -> Dict[str, str]:
"""
Using full page HTML as a parameter, extract part of HTML that contains the news article.
:param content: Full page HTML.
:param config: Optional CommonConfig object, useful for testing.
:return: Dictionary with HTML that contains the news article content ("extracted_html" key) and extractor version
tag ("extractor_version" key).
"""
content = decode_object_from_bytes_if_needed(content)
if not config:
config = CommonConfig()
ua = UserAgent()
api_url = config.extractor_api_url()
# Wait up to a minute for extraction to finish
ua.set_timeout(EXTRACT_TIMEOUT)
# Wait for the extractor's HTTP port to become open as the service might be still starting up somewhere
api_uri = furl(api_url)
api_url_hostname = str(api_uri.host)
api_url_port = int(api_uri.port)
assert api_url_hostname, f"API URL hostname is not set for URL {api_url}"
assert api_url_port, f"API URL port is not set for URL {api_url}"
if not wait_for_tcp_port_to_open(
port=api_url_port,
hostname=api_url_hostname,
retries=EXTRACTOR_SERVICE_TIMEOUT,
):
# Instead of throwing an exception, just crash the whole application
# because there's no point in continuing on running it whatsoever:
#
# 1) If the extractor service didn't come up in a given time, it won't
# suddenly show up
# 2) If it's a test that's doing the extraction, it can't do its job
# and should fail one way or another; exit(1) is just one of the
# ways how it can fail
# 3) If it's some production code that needs something to get
# extracted, and if we were to throw an exception instead of doing
# exit(1), the caller might treat this exception as a failure to
# extract this one specific input HTML file, and so it might
# mis-extract a bunch of stories that way (making it hard for us to
# spot the problem and time-consuming to fix it later (e.g. there
# would be a need to manually re-extract a million of stories))
#
# A better solution instead of exit(1) might be to throw different
# kinds of exceptions and handle them appropriately in the caller, but
# with the Perl-Python codebase that's a bit hard to do.
fatal_error(
"Extractor service at {url} didn't come up in {timeout} seconds, exiting...".format(
url=api_url,
timeout=EXTRACTOR_SERVICE_TIMEOUT,
)
)
request_json = encode_json({'html': content})
http_request = Request(method='POST', url=api_url)
http_request.set_content_type('application/json; charset=utf-8')
http_request.set_content(request_json)
# Try extracting multiple times
#
# UserAgent's set_timing() would only retry on retryable HTTP status codes and doesn't retry on connection errors by
# default as such retries might have side effects, e.g. an API getting called multiple times. So, we retry
# extracting the content a couple of times manually.
http_response = None
extraction_succeeded = False
for retry in range(EXTRACT_RETRIES):
if retry > 0:
log.warning(f"Retrying #{retry + 1}...")
http_response = ua.request(http_request)
if http_response.is_success():
extraction_succeeded = True
break
else:
log.error(f"Extraction attempt {retry + 1} failed: {http_response.decoded_content()}")
if not extraction_succeeded:
raise McExtractArticleFromPageException(
f"Extraction of {len(content)} characters; failed; last error: {http_response.decoded_content()}"
)
response = http_response.decoded_json()
assert 'extracted_html' in response, "Response is expected to have 'extracted_html' key."
assert 'extractor_version' in response, "Response is expected to have 'extractor_version' key."
return response
def fetch_posts(self, query: str, start_date: datetime,
end_date: datetime) -> list:
"""Fetch day of tweets from crimson hexagon"""
ch_monitor_id = int(query)
log.debug("crimson_hexagon_twitter.fetch_posts")
ua = UserAgent()
ua.set_max_size(100 * 1024 * 1024)
ua.set_timeout(90)
ua.set_timing([1, 2, 4, 8, 16, 32, 64, 128, 256, 512])
config = TopicsMineConfig()
api_key = config.crimson_hexagon_api_key()
end_date = end_date + datetime.timedelta(days=1)
start_arg = start_date.strftime('%Y-%m-%d')
end_arg = end_date.strftime('%Y-%m-%d')
url = (
"https://api.crimsonhexagon.com/api/monitor/posts?auth=%s&id=%d&start=%s&end=%s&extendLimit=true"
% (api_key, ch_monitor_id, start_arg, end_arg))
log.debug("crimson hexagon url: " + url)
response = ua.get(url)
if not response.is_success():
raise McPostsCHTwitterDataException("error fetching posts: " +
response.decoded_content())
decoded_content = response.decoded_content()
data = dict(decode_json(decoded_content))
if 'status' not in data or not data['status'] == 'success':
raise McPostsCHTwitterDataException("Unknown response status: " +
str(data))
meta_tweets = data['posts']
for mt in meta_tweets:
mt['tweet_id'] = get_tweet_id_from_url(mt['url'])
add_tweets_to_meta_tweets(meta_tweets)
posts = []
for mt in meta_tweets:
log.warning("mt: %d" % mt['tweet_id'])
if 'tweet' in mt:
post = {
'post_id': mt['tweet_id'],
'data': mt,
'content': mt['tweet']['text'],
'publish_date': mt['tweet']['created_at'],
'author': mt['tweet']['user']['screen_name'],
'channel': mt['tweet']['user']['screen_name'],
'url': mt['url']
}
posts.append(post)
return posts