concern
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A library for seperating your application logic into concerns.
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<h1 class="page-title">Source: node/ChildStateProvider.js</h1>
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<pre class="prettyprint source linenums"><code>import beof from 'beof';
import RefState from '../RefState';
import RemoteTerminatedError from '../RemoteTerminatedError';
import Signal from '../Signal';
/**
* ChildStateProvider provides the states for a Concern in a child process.
* @param {string} remotePath - The path the remote System will recognise.
* @param {string} localPath - The path we used locally to refer to the Concern.
* @param {ChildProcess} child
* @implements {StateProvider}
*/
class ChildStateProvider {
constructor(localPath, remotePath, child) {
this._child = child;
this._localPath = localPath;
this._remotePath = remotePath;
this._ref = null;
}
provide(state, concern, context) {
var SignalConstructor;
switch (state) {
case RefState.ACTIVE_STATE:
SignalConstructor = Signal.Start;
break;
case RefState.PAUSED_STATE:
SignalConstructor = Signal.Pause;
break;
case RefState.STOPPED_STATE:
SignalConstructor = Signal.Stop;
break;
default:
throw new ReferenceError(`Invalid state: '${state}'!`);
}
try {
this._child.send(new SignalConstructor(this._remotePath));
} catch (e) {
context.publish(new RemoteTerminatedError(e));
return new RefState.Stopped(this._localPath, concern, context, this);
}
return (SignalConstructor === Signal.Stop) ?
new RefState.Stopped(this._localPath, concern, context, this) :
new RefState.Paused(this._localPath, concern, context, this);
}
}
export default ChildStateProvider
</code></pre>
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<h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><li><a href="Active.html">Active</a></li><li><a href="Address.html">Address</a></li><li><a href="ChildActiveState.html">ChildActiveState</a></li><li><a href="ChildReference.html">ChildReference</a></li><li><a href="ChildReferenceProvider.html">ChildReferenceProvider</a></li><li><a href="ChildStateProvider.html">ChildStateProvider</a></li><li><a href="Envelope.html">Envelope</a></li><li><a href="IgnoredMessage.html">IgnoredMessage</a></li><li><a href="InvalidMessageError.html">InvalidMessageError</a></li><li><a href="MailDispatcher.html">MailDispatcher</a></li><li><a href="MemoryStateProvider.html">MemoryStateProvider</a></li><li><a href="ParentReference.html">ParentReference</a></li><li><a href="Pause.html">Pause</a></li><li><a href="Paused.html">Paused</a></li><li><a href="ProcessRouter.html">ProcessRouter</a></li><li><a href="Ready.html">Ready</a></li><li><a href="ReceiveError.html">ReceiveError</a></li><li><a href="Reference.html">Reference</a></li><li><a href="RefState.html">RefState</a></li><li><a href="RemoteMessage.html">RemoteMessage</a></li><li><a href="RemoteteTerminatedError.html">RemoteteTerminatedError</a></li><li><a href="Resume.html">Resume</a></li><li><a href="Signal.html">Signal</a></li><li><a href="SimpleMailBox.html">SimpleMailBox</a></li><li><a href="SpawnChildProcessError.html">SpawnChildProcessError</a></li><li><a href="Start.html">Start</a></li><li><a href="Stop.html">Stop</a></li><li><a href="Stopped.html">Stopped</a></li><li><a href="StoppedConcernError.html">StoppedConcernError</a></li><li><a href="System.html">System</a></li><li><a href="UnhandledMessage.html">UnhandledMessage</a></li><li><a href="Unknown.html">Unknown</a></li></ul><h3>Interfaces</h3><ul><li><a href="Concern.html">Concern</a></li><li><a href="Context.html">Context</a></li><li><a href="EnqueueListener.html">EnqueueListener</a></li><li><a href="MailBox.html">MailBox</a></li><li><a href="ReferenceProvider.html">ReferenceProvider</a></li><li><a href="StateProvider.html">StateProvider</a></li></ul>
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