def __init__(self, settings_name="zappa_settings", session=None):
# We haven't cached our settings yet, load the settings and app.
if not self.settings:
# Loading settings from a python module
self.settings = importlib.import_module(settings_name)
self.settings_name = settings_name
self.session = session
# Custom log level
if self.settings.LOG_LEVEL:
level = logging.getLevelName(self.settings.LOG_LEVEL)
logger.setLevel(level)
remote_env = getattr(self.settings, 'REMOTE_ENV', None)
remote_bucket, remote_file = parse_s3_url(remote_env)
if remote_bucket and remote_file:
self.load_remote_settings(remote_bucket, remote_file)
# Let the system know that this will be a Lambda/Zappa/Stack
os.environ["SERVERTYPE"] = "AWS Lambda"
os.environ["FRAMEWORK"] = "Zappa"
try:
os.environ["PROJECT"] = self.settings.PROJECT_NAME
os.environ["STAGE"] = self.settings.API_STAGE
except Exception: # pragma: no cover
pass
# Set any locally defined env vars
# Environement variable keys can't be Unicode
# https://github.com/Miserlou/Zappa/issues/604
for key in self.settings.ENVIRONMENT_VARIABLES.keys():
os.environ[str(key)] = self.settings.ENVIRONMENT_VARIABLES[key]
# Pulling from S3 if given a zip path
project_archive_path = getattr(self.settings, 'ARCHIVE_PATH', None)
if project_archive_path:
self.load_remote_project_archive(project_archive_path)
# Load compliled library to the PythonPath
# checks if we are the slim_handler since this is not needed otherwise
# https://github.com/Miserlou/Zappa/issues/776
is_slim_handler = getattr(self.settings, 'SLIM_HANDLER', False)
if is_slim_handler:
included_libraries = getattr(self.settings, 'INCLUDE',
['libmysqlclient.so.18'])
try:
from ctypes import cdll, util
for library in included_libraries:
try:
cdll.LoadLibrary(os.path.join(
os.getcwd(), library))
except OSError:
print("Failed to find library...right filename?")
except ImportError:
print("Failed to import cytpes library")
# This is a non-WSGI application
# https://github.com/Miserlou/Zappa/pull/748
if not hasattr(self.settings,
'APP_MODULE') and not self.settings.DJANGO_SETTINGS:
self.app_module = None
wsgi_app_function = None
# This is probably a normal WSGI app
elif not self.settings.DJANGO_SETTINGS:
# The app module
self.app_module = importlib.import_module(
self.settings.APP_MODULE)
# The application
wsgi_app_function = getattr(self.app_module,
self.settings.APP_FUNCTION)
self.trailing_slash = False
# Django gets special treatment.
else:
try: # Support both for tests
from zappa.ext.django_zappa import get_django_wsgi
except ImportError: # pragma: no cover
from django_zappa_app import get_django_wsgi
# Get the Django WSGI app from our extension
wsgi_app_function = get_django_wsgi(
self.settings.DJANGO_SETTINGS)
self.trailing_slash = True
self.wsgi_app = ZappaWSGIMiddleware(wsgi_app_function)
def handler(self, event, context):
"""
An AWS Lambda function which parses specific API Gateway input into a
WSGI request, feeds it to our WSGI app, processes the response, and returns
that back to the API Gateway.
"""
settings = self.settings
# If in DEBUG mode, log all raw incoming events.
if settings.DEBUG:
logger.debug("Zappa Event: {}".format(event))
# Set any API Gateway defined Stage Variables
# as env vars
if event.get("stageVariables"):
for key in event["stageVariables"].keys():
os.environ[str(key)] = event["stageVariables"][key]
# This is the result of a keep alive, recertify
# or scheduled event.
if event.get("detail-type") == "Scheduled Event":
whole_function = event["resources"][0].split("/")[-1].split("-")[-1]
# This is a scheduled function.
if "." in whole_function:
app_function = self.import_module_and_get_function(whole_function)
# Execute the function!
return self.run_function(app_function, event, context)
# Else, let this execute as it were.
# This is a direct command invocation.
elif event.get("command", None):
whole_function = event["command"]
app_function = self.import_module_and_get_function(whole_function)
result = self.run_function(app_function, event, context)
print("Result of %s:" % whole_function)
print(result)
return result
# This is a direct, raw python invocation.
# It's _extremely_ important we don't allow this event source
# to be overridden by unsanitized, non-admin user input.
elif event.get("raw_command", None):
raw_command = event["raw_command"]
exec(raw_command)
return
# This is a Django management command invocation.
elif event.get("manage", None):
from django.core import management
try: # Support both for tests
from zappa.ext.django_zappa import get_django_wsgi
except ImportError as e: # pragma: no cover
from django_zappa_app import get_django_wsgi
# Get the Django WSGI app from our extension
# We don't actually need the function,
# but we do need to do all of the required setup for it.
app_function = get_django_wsgi(self.settings.DJANGO_SETTINGS)
# Couldn't figure out how to get the value into stdout with StringIO..
# Read the log for now. :[]
management.call_command(*event["manage"].split(" "))
return {}
# This is an AWS-event triggered invocation.
elif event.get("Records", None):
records = event.get("Records")
result = None
whole_function = self.get_function_for_aws_event(records[0])
if whole_function:
app_function = self.import_module_and_get_function(whole_function)
result = self.run_function(app_function, event, context)
logger.debug(result)
else:
logger.error("Cannot find a function to process the triggered event.")
return result
# this is an AWS-event triggered from Lex bot's intent
elif event.get("bot"):
result = None
whole_function = self.get_function_from_bot_intent_trigger(event)
if whole_function:
app_function = self.import_module_and_get_function(whole_function)
result = self.run_function(app_function, event, context)
logger.debug(result)
else:
logger.error("Cannot find a function to process the triggered event.")
return result
# This is an API Gateway authorizer event
elif event.get("type") == "TOKEN":
whole_function = self.settings.AUTHORIZER_FUNCTION
if whole_function:
app_function = self.import_module_and_get_function(whole_function)
policy = self.run_function(app_function, event, context)
return policy
else:
logger.error(
"Cannot find a function to process the authorization request."
)
raise Exception("Unauthorized")
# This is an AWS Cognito Trigger Event
elif event.get("triggerSource", None):
triggerSource = event.get("triggerSource")
whole_function = self.get_function_for_cognito_trigger(triggerSource)
result = event
if whole_function:
app_function = self.import_module_and_get_function(whole_function)
result = self.run_function(app_function, event, context)
logger.debug(result)
else:
logger.error(
"Cannot find a function to handle cognito trigger {}".format(
triggerSource
)
)
return result
# This is a CloudWatch event
# Related: https://github.com/Miserlou/Zappa/issues/1924
elif event.get("awslogs", None):
result = None
whole_function = "{}.{}".format(settings.APP_MODULE, settings.APP_FUNCTION)
app_function = self.import_module_and_get_function(whole_function)
if app_function:
result = self.run_function(app_function, event, context)
logger.debug("Result of %s:" % whole_function)
logger.debug(result)
else:
logger.error("Cannot find a function to process the triggered event.")
return result
# Normal web app flow
try:
# Timing
time_start = datetime.datetime.now()
# This is a normal HTTP request
if event.get("httpMethod", None):
script_name = ""
is_elb_context = False
headers = merge_headers(event)
if event.get("requestContext", None) and event["requestContext"].get(
"elb", None
):
# Related: https://github.com/Miserlou/Zappa/issues/1715
# inputs/outputs for lambda loadbalancer
# https://docs.aws.amazon.com/elasticloadbalancing/latest/application/lambda-functions.html
is_elb_context = True
# host is lower-case when forwarded from ELB
host = headers.get("host")
# TODO: pathParameters is a first-class citizen in apigateway but not available without
# some parsing work for ELB (is this parameter used for anything?)
event["pathParameters"] = ""
else:
if headers:
host = headers.get("Host")
else:
host = None
logger.debug("host found: [{}]".format(host))
if host:
if "amazonaws.com" in host:
logger.debug("amazonaws found in host")
# The path provided in th event doesn't include the
# stage, so we must tell Flask to include the API
# stage in the url it calculates. See https://github.com/Miserlou/Zappa/issues/1014
script_name = "/" + settings.API_STAGE
else:
# This is a test request sent from the AWS console
if settings.DOMAIN:
# Assume the requests received will be on the specified
# domain. No special handling is required
pass
else:
# Assume the requests received will be to the
# amazonaws.com endpoint, so tell Flask to include the
# API stage
script_name = "/" + settings.API_STAGE
base_path = getattr(settings, "BASE_PATH", None)
# Create the environment for WSGI and handle the request
environ = create_wsgi_request(
event,
script_name=script_name,
base_path=base_path,
trailing_slash=self.trailing_slash,
binary_support=settings.BINARY_SUPPORT,
context_header_mappings=settings.CONTEXT_HEADER_MAPPINGS,
)
# We are always on https on Lambda, so tell our wsgi app that.
environ["HTTPS"] = "on"
environ["wsgi.url_scheme"] = "https"
environ["lambda.context"] = context
environ["lambda.event"] = event
# Execute the application
with Response.from_app(self.wsgi_app, environ) as response:
# This is the object we're going to return.
# Pack the WSGI response into our special dictionary.
zappa_returndict = dict()
# Issue #1715: ALB support. ALB responses must always include
# base64 encoding and status description
if is_elb_context:
zappa_returndict.setdefault("isBase64Encoded", False)
zappa_returndict.setdefault(
"statusDescription", response.status
)
if response.data:
if (
settings.BINARY_SUPPORT
and not response.mimetype.startswith("text/")
and response.mimetype != "application/json"
):
zappa_returndict["body"] = base64.b64encode(
response.data
).decode("utf-8")
zappa_returndict["isBase64Encoded"] = True
else:
zappa_returndict["body"] = response.get_data(as_text=True)
zappa_returndict["statusCode"] = response.status_code
if "headers" in event:
zappa_returndict["headers"] = {}
for key, value in response.headers:
zappa_returndict["headers"][key] = value
if "multiValueHeaders" in event:
zappa_returndict["multiValueHeaders"] = {}
for key, value in response.headers:
zappa_returndict["multiValueHeaders"][
key
] = response.headers.getlist(key)
# Calculate the total response time,
# and log it in the Common Log format.
time_end = datetime.datetime.now()
delta = time_end - time_start
response_time_ms = delta.total_seconds() * 1000
response.content = response.data
common_log(environ, response, response_time=response_time_ms)
return zappa_returndict
except Exception as e: # pragma: no cover
# Print statements are visible in the logs either way
print(e)
exc_info = sys.exc_info()
message = (
"An uncaught exception happened while servicing this request. "
"You can investigate this with the `zappa tail` command."
)
# If we didn't even build an app_module, just raise.
if not settings.DJANGO_SETTINGS:
try:
self.app_module
except NameError as ne:
message = "Failed to import module: {}".format(ne.message)
# Call exception handler for unhandled exceptions
exception_handler = self.settings.EXCEPTION_HANDLER
self._process_exception(
exception_handler=exception_handler,
event=event,
context=context,
exception=e,
)
# Return this unspecified exception as a 500, using template that API Gateway expects.
content = collections.OrderedDict()
content["statusCode"] = 500
body = {"message": message}
if settings.DEBUG: # only include traceback if debug is on.
body["traceback"] = traceback.format_exception(
*exc_info
) # traceback as a list for readability.
content["body"] = json.dumps(str(body), sort_keys=True, indent=4)
return content
def handler(self, event, context):
"""
An AWS Lambda function which parses specific API Gateway input into a
WSGI request, feeds it to our WSGI app, procceses the response, and returns
that back to the API Gateway.
"""
settings = self.settings
# If in DEBUG mode, log all raw incoming events.
if settings.DEBUG:
logger.debug('Zappa Event: {}'.format(event))
# This is the result of a keep alive, recertify
# or scheduled event.
if event.get('detail-type') == u'Scheduled Event':
whole_function = event['resources'][0].split('/')[-1].split(
'-')[-1]
# This is a scheduled function.
if '.' in whole_function:
app_function = self.import_module_and_get_function(
whole_function)
# Execute the function!
return self.run_function(app_function, event, context)
# Else, let this execute as it were.
# This is a direct command invocation.
elif event.get('command', None):
whole_function = event['command']
app_function = self.import_module_and_get_function(whole_function)
result = self.run_function(app_function, event, context)
print("Result of %s:" % whole_function)
print(result)
return result
# This is a direct, raw python invocation.
# It's _extremely_ important we don't allow this event source
# to be overriden by unsanitized, non-admin user input.
elif event.get('raw_command', None):
raw_command = event['raw_command']
exec(raw_command)
return
# This is a Django management command invocation.
elif event.get('manage', None):
from django.core import management
try: # Support both for tests
from zappa.ext.django_zappa import get_django_wsgi
except ImportError as e: # pragma: no cover
from django_zappa_app import get_django_wsgi
# Get the Django WSGI app from our extension
# We don't actually need the function,
# but we do need to do all of the required setup for it.
app_function = get_django_wsgi(self.settings.DJANGO_SETTINGS)
# Couldn't figure out how to get the value into stdout with StringIO..
# Read the log for now. :[]
management.call_command(*event['manage'].split(' '))
return {}
# This is an AWS-event triggered invokation.
elif event.get('Records', None):
records = event.get('Records')
result = None
whole_function = self.get_function_for_aws_event(records[0])
if whole_function:
app_function = self.import_module_and_get_function(
whole_function)
result = self.run_function(app_function, event, context)
logger.debug(result)
else:
logger.error(
"Cannot find a function to process the triggered event.")
return result
# This is an API Gateway authorizer event
elif event.get('type') == u'TOKEN':
whole_function = self.settings.AUTHORIZER_FUNCTION
if whole_function:
app_function = self.import_module_and_get_function(
whole_function)
policy = self.run_function(app_function, event, context)
return policy
else:
logger.error(
"Cannot find a function to process the authorization request."
)
raise Exception('Unauthorized')
# Normal web app flow
try:
# Timing
time_start = datetime.datetime.now()
# This is a normal HTTP request
if event.get('httpMethod', None):
script_name = ''
headers = event.get('headers')
if headers:
host = headers.get('Host')
else:
host = None
if host:
if 'amazonaws.com' in host:
# The path provided in th event doesn't include the
# stage, so we must tell Flask to include the API
# stage in the url it calculates. See https://github.com/Miserlou/Zappa/issues/1014
script_name = '/' + settings.API_STAGE
else:
# This is a test request sent from the AWS console
if settings.DOMAIN:
# Assume the requests received will be on the specified
# domain. No special handling is required
pass
else:
# Assume the requests received will be to the
# amazonaws.com endpoint, so tell Flask to include the
# API stage
script_name = '/' + settings.API_STAGE
# Create the environment for WSGI and handle the request
environ = create_wsgi_request(
event,
script_name=script_name,
trailing_slash=self.trailing_slash,
binary_support=settings.BINARY_SUPPORT,
context_header_mappings=settings.CONTEXT_HEADER_MAPPINGS)
# We are always on https on Lambda, so tell our wsgi app that.
environ['HTTPS'] = 'on'
environ['wsgi.url_scheme'] = 'https'
environ['lambda.context'] = context
# Execute the application
response = Response.from_app(self.wsgi_app, environ)
# This is the object we're going to return.
# Pack the WSGI response into our special dictionary.
zappa_returndict = dict()
if response.data:
if settings.BINARY_SUPPORT:
if not response.mimetype.startswith("text/") \
or response.mimetype != "application/json":
zappa_returndict['body'] = base64.b64encode(
response.data).decode('utf-8')
zappa_returndict["isBase64Encoded"] = "true"
else:
zappa_returndict['body'] = response.data
else:
zappa_returndict['body'] = response.get_data(
as_text=True)
zappa_returndict['statusCode'] = response.status_code
zappa_returndict['headers'] = {}
for key, value in response.headers:
zappa_returndict['headers'][key] = value
# Calculate the total response time,
# and log it in the Common Log format.
time_end = datetime.datetime.now()
delta = time_end - time_start
response_time_ms = delta.total_seconds() * 1000
response.content = response.data
common_log(environ, response, response_time=response_time_ms)
return zappa_returndict
except Exception as e: # pragma: no cover
# Print statements are visible in the logs either way
print(e)
exc_info = sys.exc_info()
message = (
'An uncaught exception happened while servicing this request. '
'You can investigate this with the `zappa tail` command.')
# If we didn't even build an app_module, just raise.
if not settings.DJANGO_SETTINGS:
try:
self.app_module
except NameError as ne:
message = 'Failed to import module: {}'.format(ne.message)
# Return this unspecified exception as a 500, using template that API Gateway expects.
content = collections.OrderedDict()
content['statusCode'] = 500
body = {'message': message}
if settings.DEBUG: # only include traceback if debug is on.
body['traceback'] = traceback.format_exception(
*exc_info) # traceback as a list for readability.
content['body'] = json.dumps(str(body), sort_keys=True, indent=4)
return content
def handler(self, event, context):
"""
An AWS Lambda function which parses specific API Gateway input into a
WSGI request, feeds it to our WSGI app, procceses the response, and returns
that back to the API Gateway.
"""
settings = self.settings
# If in DEBUG mode, log all raw incoming events.
if settings.DEBUG:
print('Zappa Event: {}'.format(event))
logger.debug('Zappa Event: {}'.format(event))
# Custom log level
if settings.LOG_LEVEL:
level = logging.getLevelName(settings.LOG_LEVEL)
logger.setLevel(level)
# This is the result of a keep alive, recertify
# or scheduled event.
if event.get('detail-type') == u'Scheduled Event':
whole_function = event['resources'][0].split('/')[-1].split('-')[-1]
# This is a scheduled function.
if '.' in whole_function:
app_function = self.import_module_and_get_function(whole_function)
# Execute the function!
return self.run_function(app_function, event, context)
# Else, let this execute as it were.
# This is a direct command invocation.
elif event.get('command', None):
whole_function = event['command']
app_function = self.import_module_and_get_function(whole_function)
result = self.run_function(app_function, event, context)
print("Result of %s:" % whole_function)
print(result)
return result
# This is a Django management command invocation.
elif event.get('manage', None):
from django.core import management
try: # Support both for tests
from zappa.ext.django_zappa import get_django_wsgi
except ImportError as e: # pragma: no cover
from django_zappa_app import get_django_wsgi
# Get the Django WSGI app from our extension
# We don't actually need the function,
# but we do need to do all of the required setup for it.
app_function = get_django_wsgi(self.settings.DJANGO_SETTINGS)
# Couldn't figure out how to get the value into stdout with StringIO..
# Read the log for now. :[]
management.call_command(*event['manage'].split(' '))
return {}
# This is an AWS-event triggered invokation.
elif event.get('Records', None):
records = event.get('Records')
result = None
for record in records:
whole_function = self.get_function_for_aws_event(record)
if whole_function:
app_function = self.import_module_and_get_function(whole_function)
result = self.run_function(app_function, event, context)
logger.debug(result)
else:
logger.error("Cannot find a function to process the triggered event.")
return result
try:
# Timing
time_start = datetime.datetime.now()
# Django gets special treatment.
if not settings.DJANGO_SETTINGS:
# The app module
app_module = importlib.import_module(settings.APP_MODULE)
# The application
app_function = getattr(app_module, settings.APP_FUNCTION)
trailing_slash = False
else:
try: # Support both for tests
from zappa.ext.django import get_django_wsgi
except ImportError as e: # pragma: no cover
from django_zappa_app import get_django_wsgi
# Get the Django WSGI app from our extension
app_function = get_django_wsgi(settings.DJANGO_SETTINGS)
trailing_slash = True
app = ZappaWSGIMiddleware(app_function)
# This is a normal HTTP request
if event.get('method', None):
# If we just want to inspect this,
# return this event instead of processing the request
# https://your_api.aws-api.com/?event_echo=true
event_echo = getattr(settings, "EVENT_ECHO", True)
if event_echo and 'event_echo' in event['params'].values():
return {'Content': str(event) + '\n' + str(context), 'Status': 200}
if settings.DOMAIN:
# If we're on a domain, we operate normally
script_name = ''
else:
# But if we're not, then our base URL
# will be something like
# https://blahblahblah.execute-api.us-east-1.amazonaws.com/dev
# So, we need to make sure the WSGI app knows this.
script_name = '/' + settings.API_STAGE
# Create the environment for WSGI and handle the request
environ = create_wsgi_request(
event,
script_name=script_name,
trailing_slash=trailing_slash
)
# We are always on https on Lambda, so tell our wsgi app that.
environ['HTTPS'] = 'on'
environ['wsgi.url_scheme'] = 'https'
environ['lambda.context'] = context
# Execute the application
response = Response.from_app(app, environ)
# This is the object we're going to return.
# Pack the WSGI response into our special dictionary.
zappa_returndict = dict(response.headers)
if 'Content' not in zappa_returndict and response.data:
zappa_returndict['Content'] = response.data
zappa_returndict['Status'] = response.status_code
# To ensure correct status codes, we need to
# pack the response as a deterministic B64 string and raise it
# as an error to match our APIGW regex.
# The DOCTYPE ensures that the page still renders in the browser.
exception = None
if response.status_code in ERROR_CODES:
content = collections.OrderedDict()
content['http_status'] = response.status_code
content['content'] = base64.b64encode(response.data.encode('utf-8'))
exception = json.dumps(content)
# Internal are changed to become relative redirects
# so they still work for apps on raw APIGW and on a domain.
elif 300 <= response.status_code < 400 and hasattr(response, 'Location'):
# Location is by default relative on Flask. Location is by default
# absolute on Werkzeug. We can set autocorrect_location_header on
# the response to False, but it doesn't work. We have to manually
# remove the host part.
location = response.location
hostname = 'https://' + environ['HTTP_HOST']
if location.startswith(hostname):
exception = location[len(hostname):]
# Calculate the total response time,
# and log it in the Common Log format.
time_end = datetime.datetime.now()
delta = time_end - time_start
response_time_ms = delta.total_seconds() * 1000
response.content = response.data
common_log(environ, response, response_time=response_time_ms)
# Finally, return the response to API Gateway.
if exception: # pragma: no cover
raise WSGIException(exception)
else:
return zappa_returndict
except WSGIException as e: # pragma: no cover
raise e
except Exception as e: # pragma: no cover
# Print statements are visible in the logs either way
print(e)
exc_info = sys.exc_info()
message = 'An uncaught exception happened while servicing this request.'
# If we didn't even build an app_module, just raise.
if not settings.DJANGO_SETTINGS:
try:
app_module
except NameError as ne:
message = 'Failed to import module: {}'.format(ne.message)
# Return this unspecified exception as a 500, using template that API Gateway expects.
content = collections.OrderedDict()
content['http_status'] = 500
body = {'message': message}
if settings.DEBUG: # only include traceback if debug is on.
body['traceback'] = traceback.format_exception(*exc_info) # traceback as a list for readability.
content['content'] = base64.b64encode(json.dumps(body, sort_keys=True, indent=4).encode('utf-8'))
exception = json.dumps(content)
raise UncaughtWSGIException(exception, original=e), None, exc_info[2] # Keep original traceback.
def test_dj_wsgi(self):
# Sanity
settings_modules = detect_django_settings()
settings = """
# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
import os
BASE_DIR = os.path.dirname(os.path.dirname(__file__))
# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/1.7/howto/deployment/checklist/
# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'alskdfjalsdkf=0*%do-ayvy*m2k=vss*$7)j8q!@u0+d^na7mi2(^!l!d'
# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True
TEMPLATE_DEBUG = True
ALLOWED_HOSTS = []
# Application definition
INSTALLED_APPS = (
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
)
MIDDLEWARE_CLASSES = (
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
)
ROOT_URLCONF = 'blah.urls'
WSGI_APPLICATION = 'hackathon_starter.wsgi.application'
# Database
# https://docs.djangoproject.com/en/1.7/ref/settings/#databases
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.sqlite3',
'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
}
}
# Internationalization
# https://docs.djangoproject.com/en/1.7/topics/i18n/
LANGUAGE_CODE = 'en-us'
TIME_ZONE = 'UTC'
USE_I18N = True
USE_L10N = True
USE_TZ = True
"""
djts = open("dj_test_settings.py", "w")
djts.write(settings)
djts.close()
app = get_django_wsgi('dj_test_settings')
os.remove('dj_test_settings.py')
os.remove('dj_test_settings.pyc')
def __init__(self, settings_name="zappa_settings", session=None):
# We haven't cached our settings yet, load the settings and app.
if not self.settings:
# Loading settings from a python module
self.settings = importlib.import_module(settings_name)
self.settings_name = settings_name
self.session = session
# Custom log level
if self.settings.LOG_LEVEL:
level = logging.getLevelName(self.settings.LOG_LEVEL)
logger.setLevel(level)
remote_env = getattr(self.settings, 'REMOTE_ENV', None)
remote_bucket, remote_file = parse_s3_url(remote_env)
if remote_bucket and remote_file:
self.load_remote_settings(remote_bucket, remote_file)
# Let the system know that this will be a Lambda/Zappa/Stack
os.environ["SERVERTYPE"] = "AWS Lambda"
os.environ["FRAMEWORK"] = "Zappa"
try:
os.environ["PROJECT"] = self.settings.PROJECT_NAME
os.environ["STAGE"] = self.settings.API_STAGE
except Exception: # pragma: no cover
pass
# Set any locally defined env vars
# Environement variable keys can't be Unicode
# https://github.com/Miserlou/Zappa/issues/604
for key in self.settings.ENVIRONMENT_VARIABLES.keys():
os.environ[str(key)] = self.settings.ENVIRONMENT_VARIABLES[key]
# Pulling from S3 if given a zip path
project_zip_path = getattr(self.settings, 'ZIP_PATH', None)
if project_zip_path:
self.load_remote_project_zip(project_zip_path)
# Load compliled library to the PythonPath
# checks if we are the slim_handler since this is not needed otherwise
# https://github.com/Miserlou/Zappa/issues/776
is_slim_handler = getattr(self.settings, 'SLIM_HANDLER', False)
if is_slim_handler:
included_libraries = getattr(self.settings, 'INCLUDE', ['libmysqlclient.so.18'])
try:
from ctypes import cdll, util
for library in included_libraries:
try:
cdll.LoadLibrary(os.path.join(os.getcwd(), library))
except OSError:
print ("Failed to find library...right filename?")
except ImportError:
print ("Failed to import cytpes library")
# This is a non-WSGI application
# https://github.com/Miserlou/Zappa/pull/748
if not hasattr(self.settings, 'APP_MODULE') and not self.settings.DJANGO_SETTINGS:
self.app_module = None
wsgi_app_function = None
# This is probably a normal WSGI app
elif not self.settings.DJANGO_SETTINGS:
# The app module
self.app_module = importlib.import_module(self.settings.APP_MODULE)
# The application
wsgi_app_function = getattr(self.app_module, self.settings.APP_FUNCTION)
self.trailing_slash = False
# Django gets special treatment.
else:
try: # Support both for tests
from zappa.ext.django_zappa import get_django_wsgi
except ImportError: # pragma: no cover
from django_zappa_app import get_django_wsgi
# Get the Django WSGI app from our extension
wsgi_app_function = get_django_wsgi(self.settings.DJANGO_SETTINGS)
self.trailing_slash = True
self.wsgi_app = ZappaWSGIMiddleware(wsgi_app_function)
def handler(self, event, context):
"""
An AWS Lambda function which parses specific API Gateway input into a
WSGI request, feeds it to our WSGI app, procceses the response, and returns
that back to the API Gateway.
"""
settings = self.settings
# If in DEBUG mode, log all raw incoming events.
if settings.DEBUG:
logger.debug('Zappa Event: {}'.format(event))
# This is the result of a keep alive, recertify
# or scheduled event.
if event.get('detail-type') == u'Scheduled Event':
whole_function = event['resources'][0].split('/')[-1].split('-')[-1]
# This is a scheduled function.
if '.' in whole_function:
app_function = self.import_module_and_get_function(whole_function)
# Execute the function!
return self.run_function(app_function, event, context)
# Else, let this execute as it were.
# This is a direct command invocation.
elif event.get('command', None):
whole_function = event['command']
app_function = self.import_module_and_get_function(whole_function)
result = self.run_function(app_function, event, context)
print("Result of %s:" % whole_function)
print(result)
return result
# This is a direct, raw python invocation.
# It's _extremely_ important we don't allow this event source
# to be overriden by unsanitized, non-admin user input.
elif event.get('raw_command', None):
raw_command = event['raw_command']
exec(raw_command)
return
# This is a Django management command invocation.
elif event.get('manage', None):
from django.core import management
try: # Support both for tests
from zappa.ext.django_zappa import get_django_wsgi
except ImportError as e: # pragma: no cover
from django_zappa_app import get_django_wsgi
# Get the Django WSGI app from our extension
# We don't actually need the function,
# but we do need to do all of the required setup for it.
app_function = get_django_wsgi(self.settings.DJANGO_SETTINGS)
# Couldn't figure out how to get the value into stdout with StringIO..
# Read the log for now. :[]
management.call_command(*event['manage'].split(' '))
return {}
# This is an AWS-event triggered invokation.
elif event.get('Records', None):
records = event.get('Records')
result = None
whole_function = self.get_function_for_aws_event(records[0])
if whole_function:
app_function = self.import_module_and_get_function(whole_function)
result = self.run_function(app_function, event, context)
logger.debug(result)
else:
logger.error("Cannot find a function to process the triggered event.")
return result
# This is an API Gateway authorizer event
elif event.get('type') == u'TOKEN':
whole_function = self.settings.AUTHORIZER_FUNCTION
if whole_function:
app_function = self.import_module_and_get_function(whole_function)
policy = self.run_function(app_function, event, context)
return policy
else:
logger.error("Cannot find a function to process the authorization request.")
raise Exception('Unauthorized')
# Normal web app flow
try:
# Timing
time_start = datetime.datetime.now()
# This is a normal HTTP request
if event.get('httpMethod', None):
script_name = ''
headers = event.get('headers')
if headers:
host = headers.get('Host')
else:
host = None
if host:
if 'amazonaws.com' in host:
# The path provided in th event doesn't include the
# stage, so we must tell Flask to include the API
# stage in the url it calculates. See https://github.com/Miserlou/Zappa/issues/1014
script_name = '/' + settings.API_STAGE
else:
# This is a test request sent from the AWS console
if settings.DOMAIN:
# Assume the requests received will be on the specified
# domain. No special handling is required
pass
else:
# Assume the requests received will be to the
# amazonaws.com endpoint, so tell Flask to include the
# API stage
script_name = '/' + settings.API_STAGE
# Create the environment for WSGI and handle the request
environ = create_wsgi_request(
event,
script_name=script_name,
trailing_slash=self.trailing_slash,
binary_support=settings.BINARY_SUPPORT,
context_header_mappings=settings.CONTEXT_HEADER_MAPPINGS
)
# We are always on https on Lambda, so tell our wsgi app that.
environ['HTTPS'] = 'on'
environ['wsgi.url_scheme'] = 'https'
environ['lambda.context'] = context
# Execute the application
response = Response.from_app(self.wsgi_app, environ)
# This is the object we're going to return.
# Pack the WSGI response into our special dictionary.
zappa_returndict = dict()
if response.data:
if settings.BINARY_SUPPORT:
if not response.mimetype.startswith("text/") \
or response.mimetype != "application/json":
zappa_returndict['body'] = base64.b64encode(response.data).decode('utf-8')
zappa_returndict["isBase64Encoded"] = "true"
else:
zappa_returndict['body'] = response.data
else:
zappa_returndict['body'] = response.get_data(as_text=True)
zappa_returndict['statusCode'] = response.status_code
zappa_returndict['headers'] = {}
for key, value in response.headers:
zappa_returndict['headers'][key] = value
# Calculate the total response time,
# and log it in the Common Log format.
time_end = datetime.datetime.now()
delta = time_end - time_start
response_time_ms = delta.total_seconds() * 1000
response.content = response.data
common_log(environ, response, response_time=response_time_ms)
return zappa_returndict
except Exception as e: # pragma: no cover
# Print statements are visible in the logs either way
print(e)
exc_info = sys.exc_info()
message = ('An uncaught exception happened while servicing this request. '
'You can investigate this with the `zappa tail` command.')
# If we didn't even build an app_module, just raise.
if not settings.DJANGO_SETTINGS:
try:
self.app_module
except NameError as ne:
message = 'Failed to import module: {}'.format(ne.message)
# Return this unspecified exception as a 500, using template that API Gateway expects.
content = collections.OrderedDict()
content['statusCode'] = 500
body = {'message': message}
if settings.DEBUG: # only include traceback if debug is on.
body['traceback'] = traceback.format_exception(*exc_info) # traceback as a list for readability.
content['body'] = json.dumps(str(body), sort_keys=True, indent=4)
return content
def handler(self, event, context):
"""
An AWS Lambda function which parses specific API Gateway input into a
WSGI request, feeds it to our WSGI app, procceses the response, and returns
that back to the API Gateway.
"""
settings = self.settings
# If in DEBUG mode, log all raw incoming events.
if settings.DEBUG:
print('Zappa Event: {}'.format(event))
logger.debug('Zappa Event: {}'.format(event))
# Custom log level
if settings.LOG_LEVEL:
level = logging.getLevelName(settings.LOG_LEVEL)
logger.setLevel(level)
# This is the result of a keep alive, recertify
# or scheduled event.
if event.get('detail-type') == u'Scheduled Event':
whole_function = event['resources'][0].split('/')[-1].split(
'-')[-1]
# This is a scheduled function.
if '.' in whole_function:
app_function = self.import_module_and_get_function(
whole_function)
# Execute the function!
return self.run_function(app_function, event, context)
# Else, let this execute as it were.
# This is a direct command invocation.
elif event.get('command', None):
whole_function = event['command']
app_function = self.import_module_and_get_function(whole_function)
result = self.run_function(app_function, event, context)
print("Result of %s:" % whole_function)
print(result)
return result
# This is a Django management command invocation.
elif event.get('manage', None):
from django.core import management
try: # Support both for tests
from zappa.ext.django_zappa import get_django_wsgi
except ImportError as e: # pragma: no cover
from django_zappa_app import get_django_wsgi
# Get the Django WSGI app from our extension
# We don't actually need the function,
# but we do need to do all of the required setup for it.
app_function = get_django_wsgi(self.settings.DJANGO_SETTINGS)
# Couldn't figure out how to get the value into stdout with StringIO..
# Read the log for now. :[]
management.call_command(*event['manage'].split(' '))
return {}
# This is an AWS-event triggered invokation.
elif event.get('Records', None):
records = event.get('Records')
result = None
for record in records:
whole_function = self.get_function_for_aws_event(record)
if whole_function:
app_function = self.import_module_and_get_function(
whole_function)
result = self.run_function(app_function, event, context)
logger.debug(result)
else:
logger.error(
"Cannot find a function to process the triggered event."
)
return result
try:
# Timing
time_start = datetime.datetime.now()
# Django gets special treatment.
if not settings.DJANGO_SETTINGS:
# The app module
app_module = importlib.import_module(settings.APP_MODULE)
# The application
app_function = getattr(app_module, settings.APP_FUNCTION)
trailing_slash = False
else:
try: # Support both for tests
from zappa.ext.django import get_django_wsgi
except ImportError as e: # pragma: no cover
from django_zappa_app import get_django_wsgi
# Get the Django WSGI app from our extension
app_function = get_django_wsgi(settings.DJANGO_SETTINGS)
trailing_slash = True
app = ZappaWSGIMiddleware(app_function)
# This is a normal HTTP request
if event.get('method', None):
# If we just want to inspect this,
# return this event instead of processing the request
# https://your_api.aws-api.com/?event_echo=true
event_echo = getattr(settings, "EVENT_ECHO", True)
if event_echo and 'event_echo' in event['params'].values():
return {
'Content': str(event) + '\n' + str(context),
'Status': 200
}
if settings.DOMAIN:
# If we're on a domain, we operate normally
script_name = ''
else:
# But if we're not, then our base URL
# will be something like
# https://blahblahblah.execute-api.us-east-1.amazonaws.com/dev
# So, we need to make sure the WSGI app knows this.
script_name = '/' + settings.API_STAGE
# Create the environment for WSGI and handle the request
environ = create_wsgi_request(event,
script_name=script_name,
trailing_slash=trailing_slash)
# We are always on https on Lambda, so tell our wsgi app that.
environ['HTTPS'] = 'on'
environ['wsgi.url_scheme'] = 'https'
environ['lambda.context'] = context
# Execute the application
response = Response.from_app(app, environ)
# This is the object we're going to return.
# Pack the WSGI response into our special dictionary.
zappa_returndict = dict(response.headers)
if 'Content' not in zappa_returndict and response.data:
zappa_returndict['Content'] = response.data
zappa_returndict['Status'] = response.status_code
# To ensure correct status codes, we need to
# pack the response as a deterministic B64 string and raise it
# as an error to match our APIGW regex.
# The DOCTYPE ensures that the page still renders in the browser.
exception = None
if response.status_code in ERROR_CODES:
content = collections.OrderedDict()
content['http_status'] = response.status_code
content['content'] = base64.b64encode(
response.data.encode('utf-8'))
exception = json.dumps(content)
# Internal are changed to become relative redirects
# so they still work for apps on raw APIGW and on a domain.
elif 300 <= response.status_code < 400 and hasattr(
response, 'Location'):
# Location is by default relative on Flask. Location is by default
# absolute on Werkzeug. We can set autocorrect_location_header on
# the response to False, but it doesn't work. We have to manually
# remove the host part.
location = response.location
hostname = 'https://' + environ['HTTP_HOST']
if location.startswith(hostname):
exception = location[len(hostname):]
# Calculate the total response time,
# and log it in the Common Log format.
time_end = datetime.datetime.now()
delta = time_end - time_start
response_time_ms = delta.total_seconds() * 1000
response.content = response.data
common_log(environ, response, response_time=response_time_ms)
# Finally, return the response to API Gateway.
if exception: # pragma: no cover
raise WSGIException(exception)
else:
return zappa_returndict
except WSGIException as e: # pragma: no cover
raise e
except Exception as e: # pragma: no cover
# Print statements are visible in the logs either way
print(e)
exc_info = sys.exc_info()
message = 'An uncaught exception happened while servicing this request.'
# If we didn't even build an app_module, just raise.
if not settings.DJANGO_SETTINGS:
try:
app_module
except NameError as ne:
message = 'Failed to import module: {}'.format(ne.message)
# Return this unspecified exception as a 500, using template that API Gateway expects.
content = collections.OrderedDict()
content['http_status'] = 500
body = {'message': message}
if settings.DEBUG: # only include traceback if debug is on.
body['traceback'] = traceback.format_exception(
*exc_info) # traceback as a list for readability.
content['content'] = base64.b64encode(
json.dumps(body, sort_keys=True, indent=4).encode('utf-8'))
exception = json.dumps(content)
raise UncaughtWSGIException(
exception,
original=e), None, exc_info[2] # Keep original traceback.
def test_dj_wsgi(self):
# Sanity
settings_modules = detect_django_settings()
settings = """
# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
import os
BASE_DIR = os.path.dirname(os.path.dirname(__file__))
# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/1.7/howto/deployment/checklist/
# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'alskdfjalsdkf=0*%do-ayvy*m2k=vss*$7)j8q!@u0+d^na7mi2(^!l!d'
# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True
TEMPLATE_DEBUG = True
ALLOWED_HOSTS = []
# Application definition
INSTALLED_APPS = (
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
)
MIDDLEWARE_CLASSES = (
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
)
ROOT_URLCONF = 'blah.urls'
WSGI_APPLICATION = 'hackathon_starter.wsgi.application'
# Database
# https://docs.djangoproject.com/en/1.7/ref/settings/#databases
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.sqlite3',
'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
}
}
# Internationalization
# https://docs.djangoproject.com/en/1.7/topics/i18n/
LANGUAGE_CODE = 'en-us'
TIME_ZONE = 'UTC'
USE_I18N = True
USE_L10N = True
USE_TZ = True
"""
djts = open("dj_test_settings.py", "w")
djts.write(settings)
djts.close()
app = get_django_wsgi('dj_test_settings')
os.remove('dj_test_settings.py')
os.remove('dj_test_settings.pyc')
def handler(self, event, context):
"""
An AWS Lambda function which parses specific API Gateway input into a
WSGI request, feeds it to our WSGI app, procceses the response, and returns
that back to the API Gateway.
"""
if os.environ.get('AWS_EXECUTION_ENV', '').startswith('AWS_Lambda_'):
xray_recorder.begin_subsegment("pre_handle")
settings = self.settings
if 'multiValueHeaders' in event:
event['headers'] = dict([(key, value[-1]) for (key, value) in (event.get('multiValueHeaders') or {}).items()])
if 'multiValueQueryStringParameters' in event:
event['queryStringParameters'] = dict([(key, value[-1]) for (key, value) in (event.get('multiValueQueryStringParameters') or {}).items()])
# If in DEBUG mode, log all raw incoming events.
if settings.DEBUG:
logger.debug('Zappa Event: {}'.format(event))
# Set any API Gateway defined Stage Variables
# as env vars
if event.get('stageVariables'):
for key in event['stageVariables'].keys():
os.environ[str(key)] = event['stageVariables'][key]
# This is the result of a keep alive, recertify
# or scheduled event.
if event.get('detail-type') == u'Scheduled Event':
whole_function = event['resources'][0].split('/')[-1].split('-')[-1]
# This is a scheduled function.
if '.' in whole_function:
app_function = self.import_module_and_get_function(whole_function)
# Execute the function!
return self.run_function(app_function, event, context)
# Else, let this execute as it were.
# This is a direct command invocation.
elif event.get('command', None):
whole_function = event['command']
app_function = self.import_module_and_get_function(whole_function)
result = self.run_function(app_function, event, context)
return result
# This is a direct, raw python invocation.
# It's _extremely_ important we don't allow this event source
# to be overridden by unsanitized, non-admin user input.
elif event.get('raw_command', None):
raw_command = event['raw_command']
exec(raw_command)
return
# This is a Django management command invocation.
elif event.get('manage', None):
from django.core import management
try: # Support both for tests
from zappa.ext.django_zappa import get_django_wsgi
except ImportError as e: # pragma: no cover
from django_zappa_app import get_django_wsgi
# Get the Django WSGI app from our extension
# We don't actually need the function,
# but we do need to do all of the required setup for it.
app_function = get_django_wsgi(self.settings.DJANGO_SETTINGS)
# Couldn't figure out how to get the value into stdout with StringIO..
# Read the log for now. :[]
management.call_command(*event['manage'].split(' '))
return {}
# This is an AWS-event triggered invokation.
elif event.get('Records', None):
records = event.get('Records')
result = None
whole_function = self.get_function_for_aws_event(records[0])
if whole_function:
app_function = self.import_module_and_get_function(whole_function)
result = self.run_function(app_function, event, context)
logger.debug(result)
else:
logger.error("Cannot find a function to process the triggered event.")
return result
# this is an AWS-event triggered from Lex bot's intent
elif event.get('bot'):
result = None
whole_function = self.get_function_from_bot_intent_trigger(event)
if whole_function:
app_function = self.import_module_and_get_function(whole_function)
result = self.run_function(app_function, event, context)
logger.debug(result)
else:
logger.error("Cannot find a function to process the triggered event.")
return result
# This is an API Gateway authorizer event
elif event.get('type') == u'TOKEN':
whole_function = self.settings.AUTHORIZER_FUNCTION
if whole_function:
app_function = self.import_module_and_get_function(whole_function)
policy = self.run_function(app_function, event, context)
return policy
else:
logger.error("Cannot find a function to process the authorization request.")
raise Exception('Unauthorized')
# This is an AWS Cognito Trigger Event
elif event.get('triggerSource', None):
triggerSource = event.get('triggerSource')
whole_function = self.get_function_for_cognito_trigger(triggerSource)
result = event
if whole_function:
app_function = self.import_module_and_get_function(whole_function)
result = self.run_function(app_function, event, context)
logger.debug(result)
else:
logger.error("Cannot find a function to handle cognito trigger {}".format(triggerSource))
return result
# Normal web app flow
try:
# Timing
time_start = datetime.datetime.now()
# This is a normal HTTP request
if event.get('httpMethod', None):
script_name = ''
is_elb_context = False
headers = event.get('headers')
if event.get('requestContext', None) and event['requestContext'].get('elb', None):
# Related: https://github.com/Miserlou/Zappa/issues/1715
# inputs/outputs for lambda loadbalancer
# https://docs.aws.amazon.com/elasticloadbalancing/latest/application/lambda-functions.html
is_elb_context = True
# host is lower-case when forwarded from ELB
host = headers.get('host')
# TODO: pathParameters is a first-class citizen in apigateway but not available without
# some parsing work for ELB (is this parameter used for anything?)
event['pathParameters'] = ''
else:
if headers:
host = headers.get('Host')
else:
host = None
logger.debug('host found: [{}]'.format(host))
if host:
if 'amazonaws.com' in host:
logger.debug('amazonaws found in host')
# The path provided in th event doesn't include the
# stage, so we must tell Flask to include the API
# stage in the url it calculates. See https://github.com/Miserlou/Zappa/issues/1014
script_name = '/' + settings.API_STAGE
else:
# This is a test request sent from the AWS console
if settings.DOMAIN:
# Assume the requests received will be on the specified
# domain. No special handling is required
pass
else:
# Assume the requests received will be to the
# amazonaws.com endpoint, so tell Flask to include the
# API stage
script_name = '/' + settings.API_STAGE
base_path = getattr(settings, 'BASE_PATH', None)
# Create the environment for WSGI and handle the request
environ = create_wsgi_request(
event,
script_name=script_name,
base_path=base_path,
trailing_slash=self.trailing_slash,
binary_support=settings.BINARY_SUPPORT,
context_header_mappings=settings.CONTEXT_HEADER_MAPPINGS,
should_transform_to_iso_8859_1=not settings.DJANGO_SETTINGS
)
# We are always on https on Lambda, so tell our wsgi app that.
environ['HTTPS'] = 'on'
environ['wsgi.url_scheme'] = 'https'
environ['lambda.context'] = context
environ['lambda.event'] = event
if os.environ.get('AWS_EXECUTION_ENV', '').startswith('AWS_Lambda_'):
xray_recorder.end_subsegment()
# Execute the application
response = Response.from_app(self.wsgi_app, environ)
if os.environ.get('AWS_EXECUTION_ENV', '').startswith('AWS_Lambda_'):
xray_recorder.begin_subsegment("post_handle")
# This is the object we're going to return.
# Pack the WSGI response into our special dictionary.
zappa_returndict = dict()
# Issue #1715: ALB support. ALB responses must always include
# base64 encoding and status description
if is_elb_context:
zappa_returndict.setdefault('isBase64Encoded', False)
zappa_returndict.setdefault('statusDescription', response.status)
if response.data:
if settings.BINARY_SUPPORT:
if not response.mimetype.startswith("text/") \
or response.mimetype != "application/json":
zappa_returndict['body'] = base64.b64encode(response.data).decode('utf-8')
zappa_returndict["isBase64Encoded"] = True
else:
zappa_returndict['body'] = response.data
else:
zappa_returndict['body'] = response.get_data(as_text=True)
zappa_returndict['statusCode'] = response.status_code
zappa_returndict['headers'] = {}
for key, value in response.headers:
zappa_returndict['headers'][key] = value
zappa_returndict['multiValueHeaders'] = {}
for key, value in response.headers:
zappa_returndict['multiValueHeaders'][key] = [value]
# Calculate the total response time,
# and log it in the Common Log format.
time_end = datetime.datetime.now()
delta = time_end - time_start
response_time_ms = delta.total_seconds() * 1000
response.content = response.data
common_log(environ, response, response_time=response_time_ms)
if os.environ.get('AWS_EXECUTION_ENV', '').startswith('AWS_Lambda_'):
xray_recorder.end_subsegment()
return zappa_returndict
except Exception as e: # pragma: no cover
# Print statements are visible in the logs either way
print(e)
exc_info = sys.exc_info()
message = ('An uncaught exception happened while servicing this request. '
'You can investigate this with the `zappa tail` command.')
# If we didn't even build an app_module, just raise.
if not settings.DJANGO_SETTINGS:
try:
self.app_module
except NameError as ne:
message = 'Failed to import module: {}'.format(ne.message)
# Call exception handler for unhandled exceptions
exception_handler = self.settings.EXCEPTION_HANDLER
self._process_exception(exception_handler=exception_handler,
event=event, context=context, exception=e)
# Return this unspecified exception as a 500, using template that API Gateway expects.
content = collections.OrderedDict()
content['statusCode'] = 500
body = {'message': message}
if settings.DEBUG: # only include traceback if debug is on.
body['traceback'] = traceback.format_exception(*exc_info) # traceback as a list for readability.
content['body'] = json.dumps(str(body), sort_keys=True, indent=4)
return content
