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def _clear_policy(self, lambda_name):
""" Remove obsolete policy statements to prevent policy from bloating over the limit after repeated updates. """ |
try:
policy_response = self.lambda_client.get_policy(
FunctionName=lambda_name
)
if policy_response['ResponseMetadata']['HTTPStatusCode'] == 200:
statement = json.loads(policy_response['Policy'])['Statement']
for s in statement... |
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def create_event_permission(self, lambda_name, principal, source_arn):
""" Create permissions to link to an event. Related: http://docs.aws.amazon.com/lambda/lat... |
logger.debug('Adding new permission to invoke Lambda function: {}'.format(lambda_name))
permission_response = self.lambda_client.add_permission(
FunctionName=lambda_name,
StatementId=''.join(random.choice(string.ascii_uppercase + string.digits) for _ in range(8)),
Ac... |
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def get_event_name(lambda_name, name):
""" Returns an AWS-valid Lambda event name. """ |
return '{prefix:.{width}}-{postfix}'.format(prefix=lambda_name, width=max(0, 63 - len(name)), postfix=name)[:64] |
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def get_hashed_rule_name(event, function, lambda_name):
""" Returns an AWS-valid CloudWatch rule name using a digest of the event name, lambda name, and function... |
event_name = event.get('name', function)
name_hash = hashlib.sha1('{}-{}'.format(lambda_name, event_name).encode('UTF-8')).hexdigest()
return Zappa.get_event_name(name_hash, function) |
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def delete_rule(self, rule_name):
""" Delete a CWE rule. This deletes them, but they will still show up in the AWS console. Annoying. """ |
logger.debug('Deleting existing rule {}'.format(rule_name))
# All targets must be removed before
# we can actually delete the rule.
try:
targets = self.events_client.list_targets_by_rule(Rule=rule_name)
except botocore.exceptions.ClientError as e:
# This... |
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def get_event_rule_names_for_lambda(self, lambda_arn):
""" Get all of the rule names associated with a lambda function. """ |
response = self.events_client.list_rule_names_by_target(TargetArn=lambda_arn)
rule_names = response['RuleNames']
# Iterate when the results are paginated
while 'NextToken' in response:
response = self.events_client.list_rule_names_by_target(TargetArn=lambda_arn,
... |
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def get_event_rules_for_lambda(self, lambda_arn):
""" Get all of the rule details associated with this function. """ |
rule_names = self.get_event_rule_names_for_lambda(lambda_arn=lambda_arn)
return [self.events_client.describe_rule(Name=r) for r in rule_names] |
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def unschedule_events(self, events, lambda_arn=None, lambda_name=None, excluded_source_services=None):
excluded_source_services = excluded_source_services or [] ... |
self._clear_policy(lambda_name)
rule_names = self.get_event_rule_names_for_lambda(lambda_arn=lambda_arn)
for rule_name in rule_names:
self.delete_rule(rule_name)
print('Unscheduled ' + rule_name + '.')
non_cwe = [e for e in events if 'event_source' in e]
... |
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def create_async_sns_topic(self, lambda_name, lambda_arn):
""" Create the SNS-based async topic. """ |
topic_name = get_topic_name(lambda_name)
# Create SNS topic
topic_arn = self.sns_client.create_topic(
Name=topic_name)['TopicArn']
# Create subscription
self.sns_client.subscribe(
TopicArn=topic_arn,
Protocol='lambda',
Endpoint=lam... |
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def remove_async_sns_topic(self, lambda_name):
""" Remove the async SNS topic. """ |
topic_name = get_topic_name(lambda_name)
removed_arns = []
for sub in self.sns_client.list_subscriptions()['Subscriptions']:
if topic_name in sub['TopicArn']:
self.sns_client.delete_topic(TopicArn=sub['TopicArn'])
removed_arns.append(sub['TopicArn'])
... |
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def create_async_dynamodb_table(self, table_name, read_capacity, write_capacity):
""" Create the DynamoDB table for async task return values """ |
try:
dynamodb_table = self.dynamodb_client.describe_table(TableName=table_name)
return False, dynamodb_table
# catch this exception (triggered if the table doesn't exist)
except botocore.exceptions.ClientError:
dynamodb_table = self.dynamodb_client.create_ta... |
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def fetch_logs(self, lambda_name, filter_pattern='', limit=10000, start_time=0):
""" Fetch the CloudWatch logs for a given Lambda name. """ |
log_name = '/aws/lambda/' + lambda_name
streams = self.logs_client.describe_log_streams(
logGroupName=log_name,
descending=True,
orderBy='LastEventTime'
)
all_streams = streams['logStreams']
all_names = [stream['logStreamName'] for stream in ... |
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def remove_log_group(self, group_name):
""" Filter all log groups that match the name given in log_filter. """ |
print("Removing log group: {}".format(group_name))
try:
self.logs_client.delete_log_group(logGroupName=group_name)
except botocore.exceptions.ClientError as e:
print("Couldn't remove '{}' because of: {}".format(group_name, e)) |
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def remove_api_gateway_logs(self, project_name):
""" Removed all logs that are assigned to a given rest api id. """ |
for rest_api in self.get_rest_apis(project_name):
for stage in self.apigateway_client.get_stages(restApiId=rest_api['id'])['item']:
self.remove_log_group('API-Gateway-Execution-Logs_{}/{}'.format(rest_api['id'], stage['stageName'])) |
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def get_hosted_zone_id_for_domain(self, domain):
""" Get the Hosted Zone ID for a given domain. """ |
all_zones = self.get_all_zones()
return self.get_best_match_zone(all_zones, domain) |
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def get_best_match_zone(all_zones, domain):
"""Return zone id which name is closer matched with domain name.""" |
# Related: https://github.com/Miserlou/Zappa/issues/459
public_zones = [zone for zone in all_zones['HostedZones'] if not zone['Config']['PrivateZone']]
zones = {zone['Name'][:-1]: zone['Id'] for zone in public_zones if zone['Name'][:-1] in domain}
if zones:
keys = max(zone... |
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def remove_dns_challenge_txt(self, zone_id, domain, txt_challenge):
""" Remove DNS challenge TXT. """ |
print("Deleting DNS challenge..")
resp = self.route53.change_resource_record_sets(
HostedZoneId=zone_id,
ChangeBatch=self.get_dns_challenge_change_batch('DELETE', domain, txt_challenge)
)
return resp |
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def load_credentials(self, boto_session=None, profile_name=None):
""" Load AWS credentials. An optional boto_session can be provided, but that's usually for test... |
# Automatically load credentials from config or environment
if not boto_session:
# If provided, use the supplied profile name.
if profile_name:
self.boto_session = boto3.Session(profile_name=profile_name, region_name=self.aws_region)
elif os.environ.... |
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def get_cert_and_update_domain( zappa_instance, lambda_name, api_stage, domain=None, manual=False, ):
""" Main cert installer path. """ |
try:
create_domain_key()
create_domain_csr(domain)
get_cert(zappa_instance)
create_chained_certificate()
with open('{}/signed.crt'.format(gettempdir())) as f:
certificate_body = f.read()
with open('{}/domain.key'.format(gettempdir())) as f:
... |
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def parse_account_key():
"""Parse account key to get public key""" |
LOGGER.info("Parsing account key...")
cmd = [
'openssl', 'rsa',
'-in', os.path.join(gettempdir(), 'account.key'),
'-noout',
'-text'
]
devnull = open(os.devnull, 'wb')
return subprocess.check_output(cmd, stderr=devnull) |
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def parse_csr():
""" Parse certificate signing request for domains """ |
LOGGER.info("Parsing CSR...")
cmd = [
'openssl', 'req',
'-in', os.path.join(gettempdir(), 'domain.csr'),
'-noout',
'-text'
]
devnull = open(os.devnull, 'wb')
out = subprocess.check_output(cmd, stderr=devnull)
domains = set([])
common_name = re.search(r"Subjec... |
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def get_boulder_header(key_bytes):
""" Use regular expressions to find crypto values from parsed account key, and return a header we can send to our Boulder inst... |
pub_hex, pub_exp = re.search(
r"modulus:\n\s+00:([a-f0-9\:\s]+?)\npublicExponent: ([0-9]+)",
key_bytes.decode('utf8'), re.MULTILINE | re.DOTALL).groups()
pub_exp = "{0:x}".format(int(pub_exp))
pub_exp = "0{0}".format(pub_exp) if len(pub_exp) % 2 else pub_exp
header = {
"alg": "R... |
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def register_account():
""" Agree to LE TOS """ |
LOGGER.info("Registering account...")
code, result = _send_signed_request(DEFAULT_CA + "/acme/new-reg", {
"resource": "new-reg",
"agreement": "https://letsencrypt.org/documents/LE-SA-v1.2-November-15-2017.pdf",
})
if code == 201: # pragma: no cover
LOGGER.info("Registered!")
... |
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def get_cert(zappa_instance, log=LOGGER, CA=DEFAULT_CA):
""" Call LE to get a new signed CA. """ |
out = parse_account_key()
header = get_boulder_header(out)
accountkey_json = json.dumps(header['jwk'], sort_keys=True, separators=(',', ':'))
thumbprint = _b64(hashlib.sha256(accountkey_json.encode('utf8')).digest())
# find domains
domains = parse_csr()
# get the certificate domains and e... |
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def verify_challenge(uri):
""" Loop until our challenge is verified, else fail. """ |
while True:
try:
resp = urlopen(uri)
challenge_status = json.loads(resp.read().decode('utf8'))
except IOError as e:
raise ValueError("Error checking challenge: {0} {1}".format(
e.code, json.loads(e.read().decode('utf8'))))
if challenge_sta... |
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def sign_certificate():
""" Get the new certificate. Returns the signed bytes. """ |
LOGGER.info("Signing certificate...")
cmd = [
'openssl', 'req',
'-in', os.path.join(gettempdir(), 'domain.csr'),
'-outform', 'DER'
]
devnull = open(os.devnull, 'wb')
csr_der = subprocess.check_output(cmd, stderr=devnull)
code, result = _send_signed_request(DEFAULT_CA + "... |
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def _send_signed_request(url, payload):
""" Helper function to make signed requests to Boulder """ |
payload64 = _b64(json.dumps(payload).encode('utf8'))
out = parse_account_key()
header = get_boulder_header(out)
protected = copy.deepcopy(header)
protected["nonce"] = urlopen(DEFAULT_CA + "/directory").headers['Replay-Nonce']
protected64 = _b64(json.dumps(protected).encode('utf8'))
cmd = ... |
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def shamelessly_promote():
""" Shamelessly promote our little community. """ |
click.echo("Need " + click.style("help", fg='green', bold=True) +
"? Found a " + click.style("bug", fg='green', bold=True) +
"? Let us " + click.style("know", fg='green', bold=True) + "! :D")
click.echo("File bug reports on " + click.style("GitHub", bold=True) + " here: "
... |
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def handle():
# pragma: no cover """ Main program execution handler. """ |
try:
cli = ZappaCLI()
sys.exit(cli.handle())
except SystemExit as e: # pragma: no cover
cli.on_exit()
sys.exit(e.code)
except KeyboardInterrupt: # pragma: no cover
cli.on_exit()
sys.exit(130)
except Exception as e:
cli.on_exit()
click.e... |
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def stage_config(self):
""" A shortcut property for settings of a stage. """ |
def get_stage_setting(stage, extended_stages=None):
if extended_stages is None:
extended_stages = []
if stage in extended_stages:
raise RuntimeError(stage + " has already been extended to these settings. "
"The... |
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def package(self, output=None):
""" Only build the package """ |
# Make sure we're in a venv.
self.check_venv()
# force not to delete the local zip
self.override_stage_config_setting('delete_local_zip', False)
# Execute the prebuild script
if self.prebuild_script:
self.execute_prebuild_script()
# Create the Lambda... |
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def template(self, lambda_arn, role_arn, output=None, json=False):
""" Only build the template file. """ |
if not lambda_arn:
raise ClickException("Lambda ARN is required to template.")
if not role_arn:
raise ClickException("Role ARN is required to template.")
self.zappa.credentials_arn = role_arn
# Create the template!
template = self.zappa.create_stack_t... |
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def rollback(self, revision):
""" Rollsback the currently deploy lambda code to a previous revision. """ |
print("Rolling back..")
self.zappa.rollback_lambda_function_version(
self.lambda_name, versions_back=revision)
print("Done!") |
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def tail(self, since, filter_pattern, limit=10000, keep_open=True, colorize=True, http=False, non_http=False, force_colorize=False):
""" Tail this function's log... |
try:
since_stamp = string_to_timestamp(since)
last_since = since_stamp
while True:
new_logs = self.zappa.fetch_logs(
self.lambda_name,
start_time=since_stamp,
limit=limit,
filte... |
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def undeploy(self, no_confirm=False, remove_logs=False):
""" Tear down an existing deployment. """ |
if not no_confirm: # pragma: no cover
confirm = input("Are you sure you want to undeploy? [y/n] ")
if confirm != 'y':
return
if self.use_alb:
self.zappa.undeploy_lambda_alb(self.lambda_name)
if self.use_apigateway:
if remove_log... |
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def update_cognito_triggers(self):
""" Update any cognito triggers """ |
if self.cognito:
user_pool = self.cognito.get('user_pool')
triggers = self.cognito.get('triggers', [])
lambda_configs = set()
for trigger in triggers:
lambda_configs.add(trigger['source'].split('_')[0])
self.zappa.update_cognito(self.l... |
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def schedule(self):
""" Given a a list of functions and a schedule to execute them, setup up regular execution. """ |
events = self.stage_config.get('events', [])
if events:
if not isinstance(events, list): # pragma: no cover
print("Events must be supplied as a list.")
return
for event in events:
self.collision_warning(event.get('function'))
if... |
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def unschedule(self):
""" Given a a list of scheduled functions, tear down their regular execution. """ |
# Run even if events are not defined to remove previously existing ones (thus default to []).
events = self.stage_config.get('events', [])
if not isinstance(events, list): # pragma: no cover
print("Events must be supplied as a list.")
return
function_arn = Non... |
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def invoke(self, function_name, raw_python=False, command=None, no_color=False):
""" Invoke a remote function. """ |
# There are three likely scenarios for 'command' here:
# command, which is a modular function path
# raw_command, which is a string of python to execute directly
# manage, which is a Django-specific management command invocation
key = command if command is not None else '... |
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def colorize_invoke_command(self, string):
""" Apply various heuristics to return a colorized version the invoke command string. If these fail, simply return the... |
final_string = string
try:
# Line headers
try:
for token in ['START', 'END', 'REPORT', '[DEBUG]']:
if token in final_string:
format_string = '[{}]'
# match whole words only
... |
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def check_environment(self, environment):
""" Make sure the environment contains only strings (since putenv needs a string) """ |
non_strings = []
for (k,v) in environment.items():
if not isinstance(v, basestring):
non_strings.append(k)
if non_strings:
raise ValueError("The following environment variables are not strings: {}".format(", ".join(non_strings)))
else:
... |
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def shell(self):
""" Spawn a debug shell. """ |
click.echo(click.style("NOTICE!", fg="yellow", bold=True) + " This is a " + click.style("local", fg="green", bold=True) + " shell, inside a " + click.style("Zappa", bold=True) + " object!")
self.zappa.shell()
return |
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def callback(self, position):
""" Allows the execution of custom code between creation of the zip file and deployment to AWS. :return: None """ |
callbacks = self.stage_config.get('callbacks', {})
callback = callbacks.get(position)
if callback:
(mod_path, cb_func_name) = callback.rsplit('.', 1)
try: # Prefer callback in working directory
if mod_path.count('.') >= 1: # Callback function is nest... |
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def check_for_update(self):
""" Print a warning if there's a new Zappa version available. """ |
try:
version = pkg_resources.require("zappa")[0].version
updateable = check_new_version_available(version)
if updateable:
click.echo(click.style("Important!", fg="yellow", bold=True) +
" A new version of " + click.style("Zappa", bol... |
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def load_settings_file(self, settings_file=None):
""" Load our settings file. """ |
if not settings_file:
settings_file = self.get_json_or_yaml_settings()
if not os.path.isfile(settings_file):
raise ClickException("Please configure your zappa_settings file or call `zappa init`.")
path, ext = os.path.splitext(settings_file)
if ext == '.yml' or ... |
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def print_logs(self, logs, colorize=True, http=False, non_http=False, force_colorize=None):
""" Parse, filter and print logs to the console. """ |
for log in logs:
timestamp = log['timestamp']
message = log['message']
if "START RequestId" in message:
continue
if "REPORT RequestId" in message:
continue
if "END RequestId" in message:
continue
... |
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def is_http_log_entry(self, string):
""" Determines if a log entry is an HTTP-formatted log string or not. """ |
# Debug event filter
if 'Zappa Event' in string:
return False
# IP address filter
for token in string.replace('\t', ' ').split(' '):
try:
if (token.count('.') is 3 and token.replace('.', '').isnumeric()):
return True
... |
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def colorize_log_entry(self, string):
""" Apply various heuristics to return a colorized version of a string. If these fail, simply return the string in plaintex... |
final_string = string
try:
# First, do stuff in square brackets
inside_squares = re.findall(r'\[([^]]*)\]', string)
for token in inside_squares:
if token in ['CRITICAL', 'ERROR', 'WARNING', 'DEBUG', 'INFO', 'NOTSET']:
final_strin... |
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def execute_prebuild_script(self):
""" Parse and execute the prebuild_script from the zappa_settings. """ |
(pb_mod_path, pb_func) = self.prebuild_script.rsplit('.', 1)
try: # Prefer prebuild script in working directory
if pb_mod_path.count('.') >= 1: # Prebuild script func is nested in a folder
(mod_folder_path, mod_name) = pb_mod_path.rsplit('.', 1)
mod_folde... |
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Description:
def collision_warning(self, item):
""" Given a string, print a warning if this could collide with a Zappa core package module. Use for app functions and events. ... |
namespace_collisions = [
"zappa.", "wsgi.", "middleware.", "handler.", "util.", "letsencrypt.", "cli."
]
for namespace_collision in namespace_collisions:
if item.startswith(namespace_collision):
click.echo(click.style("Warning!", fg="red", bold=True) +
... |
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def check_venv(self):
""" Ensure we're inside a virtualenv. """ |
if self.zappa:
venv = self.zappa.get_current_venv()
else:
# Just for `init`, when we don't have settings yet.
venv = Zappa.get_current_venv()
if not venv:
raise ClickException(
click.style("Zappa", bold=True) + " requires an " + cl... |
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def silence(self):
""" Route all stdout to null. """ |
sys.stdout = open(os.devnull, 'w')
sys.stderr = open(os.devnull, 'w') |
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Description:
def touch_endpoint(self, endpoint_url):
""" Test the deployed endpoint with a GET request. """ |
# Private APIGW endpoints most likely can't be reached by a deployer
# unless they're connected to the VPC by VPN. Instead of trying
# connect to the service, print a warning and let the user know
# to check it manually.
# See: https://github.com/Miserlou/Zappa/pull/1719#issuec... |
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Description:
def all_casings(input_string):
""" Permute all casings of a given string. A pretty algorithm, via @Amber http://stackoverflow.com/questions/6792803/finding-all-p... |
if not input_string:
yield ""
else:
first = input_string[:1]
if first.lower() == first.upper():
for sub_casing in all_casings(input_string[1:]):
yield first + sub_casing
else:
for sub_casing in all_casings(input_string[1:]):
... |
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Description:
def get_encoding(headers, content):
"""Get encoding from request headers or page head.""" |
encoding = None
content_type = headers.get('content-type')
if content_type:
_, params = cgi.parse_header(content_type)
if 'charset' in params:
encoding = params['charset'].strip("'\"")
if not encoding:
content = utils.pretty_unicode(content[:1000]) if six.PY3 else ... |
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Description:
def encoding(self):
""" encoding of Response.content. if Response.encoding is None, encoding will be guessed by header or content or chardet if available. """ |
if hasattr(self, '_encoding'):
return self._encoding
# content is unicode
if isinstance(self.content, six.text_type):
return 'unicode'
# Try charset from content-type or content
encoding = get_encoding(self.headers, self.content)
# Fallback to ... |
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def json(self):
"""Returns the json-encoded content of the response, if any.""" |
if hasattr(self, '_json'):
return self._json
try:
self._json = json.loads(self.text or self.content)
except ValueError:
self._json = None
return self._json |
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Description:
def doc(self):
"""Returns a PyQuery object of the response's content""" |
if hasattr(self, '_doc'):
return self._doc
elements = self.etree
doc = self._doc = PyQuery(elements)
doc.make_links_absolute(utils.text(self.url))
return doc |
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Description:
def etree(self):
"""Returns a lxml object of the response's content that can be selected by xpath""" |
if not hasattr(self, '_elements'):
try:
parser = lxml.html.HTMLParser(encoding=self.encoding)
self._elements = lxml.html.fromstring(self.content, parser=parser)
except LookupError:
# lxml would raise LookupError when encoding not supported... |
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Description:
def not_send_status(func):
""" Do not send process status package back to scheduler. """ |
@functools.wraps(func)
def wrapper(self, response, task):
self._extinfo['not_send_status'] = True
function = func.__get__(self, self.__class__)
return self._run_func(function, response, task)
return wrapper |
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Description:
def config(_config=None, **kwargs):
""" A decorator for setting the default kwargs of `BaseHandler.crawl`. Any self.crawl with this callback will use this config... |
if _config is None:
_config = {}
_config.update(kwargs)
def wrapper(func):
func._config = _config
return func
return wrapper |
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Description:
def every(minutes=NOTSET, seconds=NOTSET):
""" method will been called every minutes or seconds """ |
def wrapper(func):
# mark the function with variable 'is_cronjob=True', the function would be
# collected into the list Handler._cron_jobs by meta class
func.is_cronjob = True
# collect interval and unify to seconds, it's used in meta class. See the
# comments in meta class... |
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Description:
def catch_error(func):
"""Catch errors of rabbitmq then reconnect""" |
import amqp
try:
import pika.exceptions
connect_exceptions = (
pika.exceptions.ConnectionClosed,
pika.exceptions.AMQPConnectionError,
)
except ImportError:
connect_exceptions = ()
connect_exceptions += (
select.error,
socket.error... |
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Description:
| def get(self):
'''Get a task from queue when bucket available'''
if self.bucket.get() < 1:
return None
now = time.time()
self.mutex.acquire()
try:
task = self.priority_queue.get_nowait()
self.bucket.desc()
except Queue.Empty:
... |
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Description:
| def done(self, taskid):
'''Mark task done'''
if taskid in self.processing:
self.mutex.acquire()
if taskid in self.processing:
del self.processing[taskid]
self.mutex.release()
return True
return False |
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Description:
| def is_processing(self, taskid):
'''
return True if taskid is in processing
'''
return taskid in self.processing and self.processing[taskid].taskid |
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def logstr(self):
"""handler the log records to formatted string""" |
result = []
formater = LogFormatter(color=False)
for record in self.logs:
if isinstance(record, six.string_types):
result.append(pretty_unicode(record))
else:
if record.exc_info:
a, b, tb = record.exc_info
... |
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Description:
def connect_message_queue(name, url=None, maxsize=0, lazy_limit=True):
""" create connection to message queue name: name of message queue rabbitmq: amqp://userna... |
if not url:
from pyspider.libs.multiprocessing_queue import Queue
return Queue(maxsize=maxsize)
parsed = urlparse.urlparse(url)
if parsed.scheme == 'amqp':
from .rabbitmq import Queue
return Queue(name, url, maxsize=maxsize, lazy_limit=lazy_limit)
elif parsed.scheme ==... |
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Description:
def hide_me(tb, g=globals()):
"""Hide stack traceback of given stack""" |
base_tb = tb
try:
while tb and tb.tb_frame.f_globals is not g:
tb = tb.tb_next
while tb and tb.tb_frame.f_globals is g:
tb = tb.tb_next
except Exception as e:
logging.exception(e)
tb = base_tb
if not tb:
tb = base_tb
return tb |
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Description:
def run_in_subprocess(func, *args, **kwargs):
"""Run function in subprocess, return a Process object""" |
from multiprocessing import Process
thread = Process(target=func, args=args, kwargs=kwargs)
thread.daemon = True
thread.start()
return thread |
<SYSTEM_TASK:>
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Description:
def utf8(string):
""" Make sure string is utf8 encoded bytes. If parameter is a object, object.__str__ will been called before encode as bytes """ |
if isinstance(string, six.text_type):
return string.encode('utf8')
elif isinstance(string, six.binary_type):
return string
else:
return six.text_type(string).encode('utf8') |
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def text(string, encoding='utf8'):
""" Make sure string is unicode type, decode with given encoding if it's not. If parameter is a object, object.__str__ will be... |
if isinstance(string, six.text_type):
return string
elif isinstance(string, six.binary_type):
return string.decode(encoding)
else:
return six.text_type(string) |
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def pretty_unicode(string):
""" Make sure string is unicode, try to decode with utf8, or unicode escaped string if failed. """ |
if isinstance(string, six.text_type):
return string
try:
return string.decode("utf8")
except UnicodeDecodeError:
return string.decode('Latin-1').encode('unicode_escape').decode("utf8") |
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Description:
def unicode_string(string):
""" Make sure string is unicode, try to default with utf8, or base64 if failed. can been decode by `decode_unicode_string` """ |
if isinstance(string, six.text_type):
return string
try:
return string.decode("utf8")
except UnicodeDecodeError:
return '[BASE64-DATA]' + base64.b64encode(string) + '[/BASE64-DATA]' |
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Description:
def unicode_dict(_dict):
""" Make sure keys and values of dict is unicode. """ |
r = {}
for k, v in iteritems(_dict):
r[unicode_obj(k)] = unicode_obj(v)
return r |
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Description:
def decode_unicode_string(string):
""" Decode string encoded by `unicode_string` """ |
if string.startswith('[BASE64-DATA]') and string.endswith('[/BASE64-DATA]'):
return base64.b64decode(string[len('[BASE64-DATA]'):-len('[/BASE64-DATA]')])
return string |
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Description:
def load_object(name):
"""Load object from module""" |
if "." not in name:
raise Exception('load object need module.object')
module_name, object_name = name.rsplit('.', 1)
if six.PY2:
module = __import__(module_name, globals(), locals(), [utf8(object_name)], -1)
else:
module = __import__(module_name, globals(), locals(), [object_n... |
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Description:
def get_python_console(namespace=None):
""" Return a interactive python console instance with caller's stack """ |
if namespace is None:
import inspect
frame = inspect.currentframe()
caller = frame.f_back
if not caller:
logging.error("can't find caller who start this console.")
caller = frame
namespace = dict(caller.f_globals)
namespace.update(caller.f_lo... |
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def python_console(namespace=None):
"""Start a interactive python console with caller's stack""" |
if namespace is None:
import inspect
frame = inspect.currentframe()
caller = frame.f_back
if not caller:
logging.error("can't find caller who start this console.")
caller = frame
namespace = dict(caller.f_globals)
namespace.update(caller.f_lo... |
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Description:
def handler(self, environ, start_response):
"""XMLRPC service for windmill browser core to communicate with""" |
if environ['REQUEST_METHOD'] == 'POST':
return self.handle_POST(environ, start_response)
else:
start_response("400 Bad request", [('Content-Type', 'text/plain')])
return [''] |
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Description:
def connect_database(url):
""" create database object by url mysql: mysql+type://user:passwd@host:port/database sqlite: # relative path sqlite+type:///path/to/da... |
db = _connect_database(url)
db.copy = lambda: _connect_database(url)
return db |
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Description:
| def _update_projects(self):
'''Check project update'''
now = time.time()
if (
not self._force_update_project
and self._last_update_project + self.UPDATE_PROJECT_INTERVAL > now
):
return
for project in self.projectdb.check_update(self._l... |
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Description:
| def _update_project(self, project):
'''update one project'''
if project['name'] not in self.projects:
self.projects[project['name']] = Project(self, project)
else:
self.projects[project['name']].update(project)
project = self.projects[project['name']]
if... |
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Description:
| def _load_tasks(self, project):
'''load tasks from database'''
task_queue = project.task_queue
for task in self.taskdb.load_tasks(
self.taskdb.ACTIVE, project.name, self.scheduler_task_fields
):
taskid = task['taskid']
_schedule = task.get('schedu... |
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Description:
| def task_verify(self, task):
'''
return False if any of 'taskid', 'project', 'url' is not in task dict
or project in not in task_queue
'''
for each in ('taskid', 'project', 'url', ):
if each not in task or not task[each]:
logger.error('... |
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Description:
| def put_task(self, task):
'''put task to task queue'''
_schedule = task.get('schedule', self.default_schedule)
self.projects[task['project']].task_queue.put(
task['taskid'],
priority=_schedule.get('priority', self.default_schedule['priority']),
exetime=_schedu... |
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Description:
| def send_task(self, task, force=True):
'''
dispatch task to fetcher
out queue may have size limit to prevent block, a send_buffer is used
'''
try:
self.out_queue.put_nowait(task)
except Queue.Full:
if force:
self._send_buffer.appen... |
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Description:
| def _check_task_done(self):
'''Check status queue'''
cnt = 0
try:
while True:
task = self.status_queue.get_nowait()
# check _on_get_info result here
if task.get('taskid') == '_on_get_info' and 'project' in task and 'track' in task:
... |
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Description:
| def _check_request(self):
'''Check new task queue'''
# check _postpone_request first
todo = []
for task in self._postpone_request:
if task['project'] not in self.projects:
continue
if self.projects[task['project']].task_queue.is_processing(task['ta... |
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Description:
def _check_cronjob(self):
"""Check projects cronjob tick, return True when a new tick is sended""" |
now = time.time()
self._last_tick = int(self._last_tick)
if now - self._last_tick < 1:
return False
self._last_tick += 1
for project in itervalues(self.projects):
if not project.active:
continue
if project.waiting_get_info:
... |
<SYSTEM_TASK:>
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Description:
| def _check_select(self):
'''Select task to fetch & process'''
while self._send_buffer:
_task = self._send_buffer.pop()
try:
# use force=False here to prevent automatic send_buffer append and get exception
self.send_task(_task, False)
ex... |
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Description:
| def _try_dump_cnt(self):
'''Dump counters every 60 seconds'''
now = time.time()
if now - self._last_dump_cnt > 60:
self._last_dump_cnt = now
self._dump_cnt()
self._print_counter_log() |
<SYSTEM_TASK:>
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Description:
| def _check_delete(self):
'''Check project delete'''
now = time.time()
for project in list(itervalues(self.projects)):
if project.db_status != 'STOP':
continue
if now - project.updatetime < self.DELETE_TIME:
continue
if 'delete' ... |
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Description:
| def quit(self):
'''Set quit signal'''
self._quit = True
# stop xmlrpc server
if hasattr(self, 'xmlrpc_server'):
self.xmlrpc_ioloop.add_callback(self.xmlrpc_server.stop)
self.xmlrpc_ioloop.add_callback(self.xmlrpc_ioloop.stop) |
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Description:
| def run_once(self):
'''comsume queues and feed tasks to fetcher, once'''
self._update_projects()
self._check_task_done()
self._check_request()
while self._check_cronjob():
pass
self._check_select()
self._check_delete()
self._try_dump_cnt() |
<SYSTEM_TASK:>
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Description:
| def run(self):
'''Start scheduler loop'''
logger.info("scheduler starting...")
while not self._quit:
try:
time.sleep(self.LOOP_INTERVAL)
self.run_once()
self._exceptions = 0
except KeyboardInterrupt:
break
... |
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<USER_TASK:>
Description:
| def on_new_request(self, task):
'''Called when a new request is arrived'''
task['status'] = self.taskdb.ACTIVE
self.insert_task(task)
self.put_task(task)
project = task['project']
self._cnt['5m'].event((project, 'pending'), +1)
self._cnt['1h'].event((project, 'pe... |
<SYSTEM_TASK:>
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<USER_TASK:>
Description:
| def on_old_request(self, task, old_task):
'''Called when a crawled task is arrived'''
now = time.time()
_schedule = task.get('schedule', self.default_schedule)
old_schedule = old_task.get('schedule', {})
if _schedule.get('force_update') and self.projects[task['project']].task_q... |
<SYSTEM_TASK:>
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<USER_TASK:>
Description:
| def on_task_status(self, task):
'''Called when a status pack is arrived'''
try:
procesok = task['track']['process']['ok']
if not self.projects[task['project']].task_queue.done(task['taskid']):
logging.error('not processing pack: %(project)s:%(taskid)s %(url)s', ta... |
<SYSTEM_TASK:>
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<END_TASK>
<USER_TASK:>
Description:
| def on_task_done(self, task):
'''Called when a task is done and success, called by `on_task_status`'''
task['status'] = self.taskdb.SUCCESS
task['lastcrawltime'] = time.time()
if 'schedule' in task:
if task['schedule'].get('auto_recrawl') and 'age' in task['schedule']:
... |
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