Class LambdaFunction

When handling calls "cmd" parameter determines which what action shall be called, while other parameters are passed to the action itself.

Container configuration for this Lambda function is stored in "./config/config.yml" file. But this path can be overriden by CONFIG_PATH environment variable.

Configuration parameters

• dependencies:
  • controller: override for Controller dependency
• connections:
  • discovery_key: (optional) a key to retrieve the connection from IDiscovery
  • region: (optional) AWS region
• credentials:
  • store_key: (optional) a key to retrieve the credentials from ICredentialStore
  • access_id: AWS access/client id
  • access_key: AWS access/client id

References

• *:logger:*:*:1.0 (optional) ILogger components to pass log messages
• *:counters:*:*:1.0 (optional) ICounters components to pass collected measurements
• *:discovery:*:*:1.0 (optional) IDiscovery services to resolve connection
• *:credential-store:*:*:1.0 (optional) Credential stores to resolve credentials

see

LambdaClient

Example

class MyLambdaFunction extends LambdaFunction {
    private _controller: IMyController;
    ...
    public constructor() {
        base("mygroup", "MyGroup lambda function");
        this._dependencyResolver.put(
            "controller",
            new Descriptor("mygroup","controller","*","*","1.0")
        );
    }

    public setReferences(references: IReferences): void {
        base.setReferences(references);
        this._controller = this._dependencyResolver.getRequired<IMyController>("controller");
    }

    public register(): void {
        registerAction("get_mydata", null, (params, callback) => {
            let correlationId = params.correlation_id;
            let id = params.id;
            this._controller.getMyData(correlationId, id, callback);
        });
        ...
    }
}

let lambda = new MyLambdaFunction();

service.run((err) => {
    console.log("MyLambdaFunction is started");
});