New

Service dependencies #102

The Service schema has a new dependencies property. The serice can wait for other dependening ones when it starts. This way you don't need to call waitForServices in started any longer.

module.exports = {
  name: "posts",
  settings: {
      $dependencyTimeout: 30000 // Default: 0 - no timeout
  },
  dependencies: [
      "likes", // shorthand w/o version
      { name: "users", version: 2 }, // with numeric version
      { name: "comments", version: "staging" } // with string version
  ],
  started() {
      this.logger.info("Service started after the dependent services available.");
  }
  ....
}

The started service handler is called once the likes, users and comments services are registered (on the local or remote nodes).

Pending request queue size limit #111

The ServiceBroker has a new maxQueueSize option under transit key. The broker protects the process to avoid crash during a high load with it. The maxQueueSize default value is 50,000. If pending request queue size reaches it, broker rejects the request with a QueueIsFull (retryable) error.

let broker = new ServiceBroker({
	transporter: "NATS",
	transit: {
		maxQueueSize: 10 * 1000
	}
}

Changes

The waitForServices method supports service versions #112

By @imatefx, the waitForServices broker & service methods support service versions. Use the following formats to define version in a dependency:

module.exports = {
    name: "test",
    dependencies: { name: "users", version: 2 }
};