def handler(event, context):
log.info('Serving request from "{}" for "{}"'.format(
event['requestContext']['identity']['sourceIp'],
event['path']))
log.debug('event: {}'.format(event))
try:
resp = render_page(event['path'], format='html', event=event)
except FileNotFoundException as e:
log.error('Caught 404 while rendering "{}"'.format(event['path']))
resp = error404(event=event)
except Exception as e:
log.critical('Unexpected exception rendering route "{}": {} - {}'
.format(event['path'], e.__class__.__name__, str(e)))
try:
resp = error500(event=event)
except Exception as e:
log.critical('Failed to process 500 error, falling back to plain '
'500. {}: {}'.format(e.__class__.__name__, str(e)))
resp = {
'statusCode': '500',
'headers': {
'Content-Type': 'text/html'
},
'body': (
'<h1>Error: 500</h1>'
'<p>Server encountered an error while '
'attempting to handle another server error.</p>'
)
}
log.debug(f'sending response to client:\n{resp}')
return resp
def error500(errmsg='Server Error', format='html', event={}):
log.info('Rendering 500!')
res = render_page('/errors/500',
format=format,
status_msg=errmsg,
event=event)
res['statusCode'] = '500'
return res
def handler(event, context):
log.info('Serving request from "{}" for "{}"'.format(
event['requestContext']['identity']['sourceIp'], event['path']))
log.debug('event: {}'.format(event))
queryParams = event['queryStringParameters'] or {}
if 'page' in queryParams:
try:
resp = render_page(queryParams['page'], format='json', event=event)
except FileNotFoundException as e:
log.error('Caught 404 while rendering "{}"'.format(
queryParams['page']))
resp = error404(format='json', event=event)
except Exception as e:
log.critical(
'Unexpected exception rendering route "{}": {} - {}'.format(
queryParams['page'], e.__class__.__name__, str(e)))
try:
resp = error500(format='json', event=event)
except Exception as e:
log.critical('Failed to process 500 error, falling back to '
'plain 500. {}: {}'.format(
e.__class__.__name__, str(e)))
resp = {
'statusCode':
'500',
'headers': {
'Content-Type': 'application/json'
},
'body':
json.dumps({
'title':
'Error: 500',
'content':
'<p>Server encountered an error while '
'attempting to handle another server error.</p>',
'page':
queryParams.get('page', None),
})
}
else:
log.error('Request did not provide a page parameter')
resp = error400(format='json',
errmsg='Missing "page" parameter',
event=event)
if 'headers' not in resp:
resp['headers'] = {}
resp['headers']['access-control-allow-methods'] = 'GET,OPTIONS'
if stage == 'Beta':
resp['headers']['access-control-allow-origin'] = '*'
else:
resp['headers']['access-control-allow-origin'] = f'https://{webdomain}'
log.debug(f'sending response to client:\n{resp}')
return resp
def error400(errmsg='Client Error', format='html', event={}):
log.info('Rendering 400!')
res = render_page('/errors/400', format=format, status_msg=errmsg,
event=event)
res['statusCode'] = '400'
return res
def error404(errmsg='File not found', format='html', event={}):
log.info('Rendering 404!')
res = render_page('/errors/404', format=format, status_msg=errmsg,
event=event)
res['statusCode'] = '404'
return res