RDS generate_presigned_url does not support the DestinationRegion parameter

Copying encrypted RDS snapshots between different regions requires additional parameters in the PreSignedUrl. However, the boto3 implementation of generate_presigned_url for the RDS client does not support all of them, including DestinationRegion.

PreSignedUrl1=destination_client.generate_presigned_url('copy_db_snapshot', Params={'KmsKeyId':'mykeyid','SourceDBSnapshotIdentifier':'arn:aws:rds:us-west-2:<Account>:snapshot:rds:dbname-2017-01-12-11-40','TargetDBSnapshotIdentifier':'my-test','DestinationRegion':'us-east-1'}, ExpiresIn=1000)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python2.7/dist-packages/botocore/signers.py", line 504, in generate_presigned_url
    params, operation_model)
  File "/usr/local/lib/python2.7/dist-packages/botocore/validate.py", line 270, in serialize_to_request
    raise ParamValidationError(report=report.generate_report())
botocore.exceptions.ParamValidationError: Parameter validation failed:
Unknown parameter in input: "DestinationRegion", must be one of: SourceDBSnapshotIdentifier, TargetDBSnapshotIdentifier, KmsKeyId, Tags, CopyTags, PreSignedUrl, SourceRegion

This is the AWS CLI tools copy command:

aws --region us-east-1 rds copy-db-snapshot --source-db-snapshot-identifier 'arn:aws:rds:us-west-2:<Account>:snapshot:rds:dbname-2017-01-12-11-40' --target-db-snapshot-identifier 'my-test' --source-region us-west-2 --kms-key-id 'mykeyid'

Boto3 documentation includes this requirement as shown in [http://boto3.readthedocs.io/en/latest/reference/services/rds.html#RDS.Client.copy_db_snapshot].

Running:

Python 2.7.12 (default, Nov 19 2016, 06:48:10) [GCC 5.4.0 20160609] on linux2

boto3 (1.4.3) botocore (1.4.93)

[kyleknap]

Yeah I think that version of botocore will not have the parameter available. We released that feature about a month ago and that version: 1.4.81 is about two months old. So if you want to get it working in lambda, you will probably have to deploy with your function the latest version of botocore.

[pkoraca]

Hi,

This issue was related to DestinationRegion parameter but @mohankodali and @kmart1234 verified that SourceRegion works. DestinationRegion still does not work with generate_presigned_url method.

botocore.exceptions.ParamValidationError: Parameter validation failed:
Unknown parameter in input: "DestinationRegion", must be one of: DBInstanceIdentifier, SourceDBInstanceIdentifier, DBInstanceClass, AvailabilityZone, Port, AutoMinorVersionUpgrade, Iops, OptionGroupName, PubliclyAccessible, Tags, DBSubnetGroupName, StorageType, CopyTagsToSnapshot, MonitoringInterval, MonitoringRoleArn, KmsKeyId, PreSignedUrl, EnableIAMDatabaseAuthentication, SourceRegion

boto3 (1.4.7) botocore (1.7.10)

This is needed to set up read replicas in different regions. link

Thanks!