pip-services3-aws-node
Version:
AWS-specific components for Pip.Services in Node.js
91 lines • 4.56 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.CommandableLambdaFunction = void 0;
const pip_services3_commons_node_1 = require("pip-services3-commons-node");
const LambdaFunction_1 = require("./LambdaFunction");
/**
* Abstract AWS Lambda function, that acts as a container to instantiate and run components
* and expose them via external entry point. All actions are automatically generated for commands
* defined in [[https://pip-services3-node.github.io/pip-services3-commons-node/interfaces/commands.icommandable.html ICommandable components]]. Each command is exposed as an action defined by "cmd" parameter.
*
* Container configuration for this Lambda function is stored in <code>"./config/config.yml"</code> file.
* But this path can be overriden by <code>CONFIG_PATH</code> environment variable.
*
* ### Configuration parameters ###
*
* - dependencies:
* - controller: override for Controller dependency
* - connections:
* - discovery_key: (optional) a key to retrieve the connection from [[https://pip-services3-node.github.io/pip-services3-components-node/interfaces/connect.idiscovery.html IDiscovery]]
* - region: (optional) AWS region
* - credentials:
* - store_key: (optional) a key to retrieve the credentials from [[https://pip-services3-node.github.io/pip-services3-components-node/interfaces/auth.icredentialstore.html ICredentialStore]]
* - access_id: AWS access/client id
* - access_key: AWS access/client id
*
* ### References ###
*
* - <code>\*:logger:\*:\*:1.0</code> (optional) [[https://pip-services3-node.github.io/pip-services3-components-node/interfaces/log.ilogger.html ILogger]] components to pass log messages
* - <code>\*:counters:\*:\*:1.0</code> (optional) [[https://pip-services3-node.github.io/pip-services3-components-node/interfaces/count.icounters.html ICounters]] components to pass collected measurements
* - <code>\*:discovery:\*:\*:1.0</code> (optional) [[https://pip-services3-node.github.io/pip-services3-components-node/interfaces/connect.idiscovery.html IDiscovery]] services to resolve connection
* - <code>\*:credential-store:\*:\*:1.0</code> (optional) Credential stores to resolve credentials
*
* @see [[LambdaClient]]
*
* ### Example ###
*
* class MyLambdaFunction extends CommandableLambdaFunction {
* private _controller: IMyController;
* ...
* public constructor() {
* base("mygroup", "MyGroup lambda function");
* this._dependencyResolver.put(
* "controller",
* new Descriptor("mygroup","controller","*","*","1.0")
* );
* }
* }
*
* let lambda = new MyLambdaFunction();
*
* service.run((err) => {
* console.log("MyLambdaFunction is started");
* });
*/
class CommandableLambdaFunction extends LambdaFunction_1.LambdaFunction {
/**
* Creates a new instance of this lambda function.
*
* @param name (optional) a container name (accessible via ContextInfo)
* @param description (optional) a container description (accessible via ContextInfo)
*/
constructor(name, description) {
super(name, description);
this._dependencyResolver.put('controller', 'none');
}
registerCommandSet(commandSet) {
let commands = commandSet.getCommands();
for (let index = 0; index < commands.length; index++) {
let command = commands[index];
this.registerAction(command.getName(), null, (params, callback) => {
let correlationId = params.correlation_id;
let args = pip_services3_commons_node_1.Parameters.fromValue(params);
let timing = this.instrument(correlationId, this._info.name + '.' + command.getName());
command.execute(correlationId, args, (err, result) => {
timing.endTiming();
callback(err, result);
});
});
}
}
/**
* Registers all actions in this lambda function.
*/
register() {
let controller = this._dependencyResolver.getOneRequired('controller');
let commandSet = controller.getCommandSet();
this.registerCommandSet(commandSet);
}
}
exports.CommandableLambdaFunction = CommandableLambdaFunction;
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