aws-ecs: wrong cfnspec for EFS volume configuration (casing issue)

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: https://github.com/aws/aws-cdk/blob/23986d70c5cd69ce212b5ffdc1bcf059f438f15b/packages/%40aws-cdk/aws-ecs/test/ec2/ec2-task-definition.test.ts#L1192

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 -->

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This is 🐛 Bug Report

[desoss]

Still not solved in v1.116.0 😢

[mathieubrd]

Any update on this? Bug still there with CDK v2.8