Collect logs from GCP

Hello,

I've diligently followed the instructions at https://help.sumologic.com/07Sumo-Logic-Apps/06Google/Google_Cloud_Storage/Collect_Logs_for_Google_Cloud_Storage and have been able to (allowing for the various GCP differences) export logs from GCP and have them arrived into Sumologic.

However, I want to automate this process and started looking at the Sumologic terraform provider.

I've got all of the basic plumbing working using this provider, the only I have is that in the sumologic UI, my source shows as a  HTTP source, and all of the messages that duly arrive are pubsub (base64) formatted.

ie.

{"message":{"attributes":{"logging.googleapis.com/timestamp":"2020-02-18T10:19:38.199542Z"},"data":"base64_encoded_string","messageId":"995588409306531","message_id":"995588409306531","publishTime":"2020-02-18T10:19:38.639Z","publish_time":"2020-02-18T10:19:38.639Z"},"subscription":"projects/rl-dev-vpc/subscriptions/rl-fw-shared-firewall-sumologic-subscription"}

When I configure the source through the UI and correctly choose the 'Google Cloud Log' - then sumologic seems to magically unencode the pubsub messages and display the actual log message.

ie.

{
  "message":{
    "attributes":{
      "logging.googleapis.com/timestamp":"2020-02-18T10:24:18.018532Z"
    },
    "data":{
      "insertId":"ABC123",
      "jsonPayload":{
        "actor":{
          "user":"-SNIP-@-SNIP-.iam.gserviceaccount.com"
        },
        "event_subtype":"compute.firewalls.insert",
        "event_timestamp_us":"1582021458018532",
        "event_type":"GCE_OPERATION_DONE",
        "operation":{
          "global":true,
          "id":"-SNIP-",
          "name":"operation-1582021452565-59ed712b50c45-377ec48d-1a7c84f2",
          "type":"operation"
        },
        "resource":{
          "global":true,
          "id":"1234567890",
          "name":"earl-allow-home-pmiles",
          "type":"firewall"
        },
        "trace_id":"operation-1582021452565-59ed712b50c45-377ec48d-1a7c84f2",
        "version":"1.2"
      },
      "labels":{
        "compute.googleapis.com/resource_id":"-SNIP-",
        "compute.googleapis.com/resource_name":"some-message",
        "compute.googleapis.com/resource_type":"firewall"
      },
      "logName":"projects/-SNIP-/logs/compute.googleapis.com%2Factivity_log",
      "receiveTimestamp":"2020-02-18T10:24:18.058392077Z",
      "resource":{
        "labels":{
          "firewall_rule_id":"-SNIP-",
          "project_id":"-SNIP-"
        },
        "type":"gce_firewall_rule"
      },
      "severity":"INFO",
      "timestamp":"2020-02-18T10:24:18.018532Z"
    },
    "messageId":"1234567890",
    "message_id":"1234567890",
    "publishTime":"2020-02-18T10:24:19.193Z",
    "publish_time":"2020-02-18T10:24:19.193Z"
  },
  "subscription":"projects/-SNIP-/subscriptions/rl-fw-shared-firewall-sumologic-subscription"
}

From what I can see, there is no way via the terraform provider to tell sumologic to create a 'Google Cloud Log'

Can anyone point me in the right direction ?

Many thanks