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Code Block
{
    "credentials_map": { // This is the service account JSON object
        "type": "service_account",
        "project_id": "myprojectid",
        "private_key_id": "blahblahblah",
        "private_key": "<priv_key>",
        "client_email": "a@a.com",
        "client_id": "9126871624161341",
        "auth_uri": "https://accounts.google.com/o/oauth2/auth",
        "token_uri": "https://oauth2.googleapis.com/token",
        "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
        "client_x509_cert_url": "https://www.googleapis.com/robot/v1/metadata/x509/dahjkdhajkd%40dajsdgajdadsad.iam.gserviceaccount.com"
    },
    "project_id": "myprojectid",
    "topics": [ // This is to send data to Google Pub/Sub
        {"path": "iotdemo"}, // Non IoT Core topic
        {"path": "/devices/+/events", "type": 1, "target": "performance-testing"}, // IoT Core topic
        {"path": "/devices/+/events/sub", "type": 1, "target": "performance-testing-sub", "sub_folder": "sub"}, // IoT Core topic
        {"path": "/devices/+/state", "type": 2, "target": "performance-testing-state"} // IoT Core topic
    ],
    "forwarders": { // This is to receive Google Pub/Sub messages
      "ack_strategy": 0,
      "poll_rate": 5000,  //Deprecated after 9.36.x (ignored if included)
      "max_messages_per_poll": 2,  //Deprecated after 9.36.x (ignored if included)
      "subscriptions": [
          {
              "mqtt_topic": "pubsub",
              "pubsub_subscription": "test-sub"
          }
      ]
  }
}

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ack_strategy: 0 = ack immediately, 1 = never ack. For now, 0 should always be used.

poll_rate: Time (ms) between sending message batches to the broker. 0 will send messages immediately (deprecated after 9.36.x - ignored if included)

max_messages_per_poll: Max number of messages to send in a single batch to the broker. Implicit minimum value of 1 (deprecated after 9.36.x - ignored if included)

Messages are received by ClearBlade as soon as possible from Google. ClearBlade will buffer them internally and send them in batches as defined above.