CDK currently generates two resources with casing mistakes when EFSVolumeConfiguration is specified for task definitions.

EfsVolumeConfiguration should be
EFSVolumeConfiguration

FileSystemId should be
FilesystemId

The corresponding test is also wrong:

Reproduction Steps

The following (incomplete) snippet recreates the issue:

      const efs = new FileSystem(this, 'etcdata', {
        vpc: service.cluster.vpc,
      });

      taskDefinition.addVolume({
        name: 'etcdata',
        efsVolumeConfiguration: {
          fileSystemId: efs.fileSystemId
        },
      });

This is based on the ApplicationLoadBalancedFargateService pattern.

The above generates this CFN JSON:

        "Volumes": [
          {
            "Name": "etcdata",
            "EfsVolumeConfiguration": {
              "FileSystemId": {
                "Ref": "etcdata80702D7D"
              }
            }
          }
        ]

Which then yields CFN errors:

message: #/Volumes/0: extraneous key [EfsVolumeConfiguration] is not permitted

And if I fix the above to use the correct case manually, then later it uncovers the 2nd problem:

 #/Volumes/0/EFSVolumeConfiguration: required key [FilesystemId] not found

Fixing both manually causes the template to be deployed successfully.

Environment

• CDK CLI Version : 1.107.0 (build 52c4434)
• Framework Version: ??
• Node.js Version: v16.2.0
• OS : OSX
• **Language (Version): typescript 4.3.2 -->

This is 🐛 Bug Report