pip-services3-commons-node
Version:
Portable abstractions and patterns for Pip.Services in Node.js
106 lines • 3.45 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
/** @module run */
/** @hidden */
var _ = require('lodash');
/** @hidden */
var async = require('async');
/**
* Helper class that opens components.
*
* [[IOpenable]]
*/
var Opener = /** @class */ (function () {
function Opener() {
}
/**
* Checks if specified component is opened.
*
* To be checked components must implement [[IOpenable]] interface.
* If they don't the call to this method returns true.
*
* @param component the component that is to be checked.
* @returns true if component is opened and false otherwise.
*
* @see [[IOpenable]]
*/
Opener.isOpenOne = function (component) {
if (_.isFunction(component.isOpen))
return component.isOpen();
else
return true;
};
/**
* Checks if all components are opened.
*
* To be checked components must implement [[IOpenable]] interface.
* If they don't the call to this method returns true.
*
* @param components a list of components that are to be checked.
* @returns true if all components are opened and false if at least one component is closed.
*
* @see [[isOpenOne]]
* @see [[IOpenable]]
*/
Opener.isOpen = function (components) {
if (components == null)
return true;
var result = true;
for (var index = 0; index < components.length; index++)
result = result && Opener.isOpenOne(components[index]);
return result;
};
/**
* Opens specific component.
*
* To be opened components must implement [[IOpenable]] interface.
* If they don't the call to this method has no effect.
*
* @param correlationId (optional) transaction id to trace execution through call chain.
* @param component the component that is to be opened.
* @param callback callback function that returns error or null no errors occured.
*
* @see [[IOpenable]]
*/
Opener.openOne = function (correlationId, component, callback) {
if (_.isFunction(component.open)) {
try {
component.open(correlationId, callback);
}
catch (err) {
if (callback)
callback(err);
else if (err)
throw err;
}
}
else if (callback)
callback(null);
};
/**
* Opens multiple components.
*
* To be opened components must implement [[IOpenable]] interface.
* If they don't the call to this method has no effect.
*
* @param correlationId (optional) transaction id to trace execution through call chain.
* @param components the list of components that are to be closed.
* @param callback callback function that returns error or null no errors occured.
*
* @see [[openOne]]
* @see [[IOpenable]]
*/
Opener.open = function (correlationId, components, callback) {
async.eachSeries(components, function (component, callback) {
Opener.openOne(correlationId, component, callback);
}, function (err) {
if (callback)
callback(err);
else if (err)
throw err;
});
};
return Opener;
}());
exports.Opener = Opener;
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