python - AWS Lambda unable to GET a file from S3 -


hi have lambda (python3.6) below unable read file s3, though lambda in role has unfettered permissions s3 (iam policy below).

the lambda attempts retrieve file s3 , write temporary location. blocks on calling s3.bucket() , times out (even timeout in minutes).

what's weird it's timing out without exception, , not rejecting call s3.bucket() kind of permission error.

this pretty basic, i'm @ loss sorted out.

import boto3 botocore import exceptions  def lambda_handler(event, context):   key = event['image']   bucket = event['bucket']   tempfile = '/tmp/%s-%s' % (bucket, key)   print('(p) bucket: %s::%s' % (bucket, key))   print('(p) tempfile: %s' % tempfile)   s3 = boto3.resource('s3')   print('(p) resource intiialized')   try:     b = s3.bucket(bucket)      print('(p) bucket info: %s [%s]' % (b.name, b.creation_date))     b.download_file(prefixed_key, tempfile)     print('(p} file downloaded %s' % tempfile)   except exceptions.paramvalidationerror e:     return {"statuscode": 400, "body": 'paramvalidationerror: [%s]' % e}   except exceptions.clienterror e:     message = '[%s]: [%s]' % (e.response['error']['code'], e.response['error']['message'])     return {"statuscode": e.response['responsemetadata']['httpstatuscode'], "body": message}   print('(p) image downloaded s3 , stored at: %s' % tempfile)   return none

iam policy role has is:

{     "version": "2012-10-17",     "statement": [         {             "effect": "allow",             "action": "s3:*",             "resource": [                 "arn:aws:s3:::my_bucket",                 "arn:aws:s3:::my_bucket/*"             ]         }     ] }

example logs:

22:42:43 start requestid: 61c60167-839d-11e7-97b1-a772bbde2609 version: $latest start requestid: 61c60167-839d-11e7-97b1-a772bbde2609 version: $latest 22:42:43 (p) bucket: my_bucket::my_key 22:42:43 (p) tempfile: /tmp/my_bucket/my_key 22:42:43 (p) resource intiialized 22:43:13 end requestid: 61c60167-839d-11e7-97b1-a772bbde2609 end requestid: 61c60167-839d-11e7-97b1-a772bbde2609

the issue narrowed down misconfiguration of vpc. configured run outside of vpc don't need now, , worked.


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