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"use strict";
module.exports = Service;
// extends Namespace
var Namespace = require("./namespace");
((Service.prototype = Object.create(Namespace.prototype)).constructor = Service).className = "Service";
var Method = require("./method"),
util = require("./util"),
rpc = require("./rpc");
/**
* Constructs a new service instance.
* @classdesc Reflected service.
* @extends NamespaceBase
* @constructor
* @param {string} name Service name
* @param {Object.<string,*>} [options] Service options
* @throws {TypeError} If arguments are invalid
*/
function Service(name, options) {
Namespace.call(this, name, options);
/**
* Service methods.
* @type {Object.<string,Method>}
*/
this.methods = {}; // toJSON, marker
/**
* Cached methods as an array.
* @type {Method[]|null}
* @private
*/
this._methodsArray = null;
}
/**
* Service descriptor.
* @interface IService
* @extends INamespace
* @property {Object.<string,IMethod>} methods Method descriptors
*/
/**
* Constructs a service from a service descriptor.
* @param {string} name Service name
* @param {IService} json Service descriptor
* @returns {Service} Created service
* @throws {TypeError} If arguments are invalid
*/
Service.fromJSON = function fromJSON(name, json) {
var service = new Service(name, json.options);
/* istanbul ignore else */
if (json.methods)
for (var names = Object.keys(json.methods), i = 0; i < names.length; ++i)
service.add(Method.fromJSON(names[i], json.methods[names[i]]));
if (json.nested)
service.addJSON(json.nested);
service.comment = json.comment;
return service;
};
/**
* Converts this service to a service descriptor.
* @param {IToJSONOptions} [toJSONOptions] JSON conversion options
* @returns {IService} Service descriptor
*/
Service.prototype.toJSON = function toJSON(toJSONOptions) {
var inherited = Namespace.prototype.toJSON.call(this, toJSONOptions);
var keepComments = toJSONOptions ? Boolean(toJSONOptions.keepComments) : false;
return util.toObject([
"options" , inherited && inherited.options || undefined,
"methods" , Namespace.arrayToJSON(this.methodsArray, toJSONOptions) || /* istanbul ignore next */ {},
"nested" , inherited && inherited.nested || undefined,
"comment" , keepComments ? this.comment : undefined
]);
};
/**
* Methods of this service as an array for iteration.
* @name Service#methodsArray
* @type {Method[]}
* @readonly
*/
Object.defineProperty(Service.prototype, "methodsArray", {
get: function() {
return this._methodsArray || (this._methodsArray = util.toArray(this.methods));
}
});
function clearCache(service) {
service._methodsArray = null;
return service;
}
/**
* @override
*/
Service.prototype.get = function get(name) {
return this.methods[name]
|| Namespace.prototype.get.call(this, name);
};
/**
* @override
*/
Service.prototype.resolveAll = function resolveAll() {
var methods = this.methodsArray;
for (var i = 0; i < methods.length; ++i)
methods[i].resolve();
return Namespace.prototype.resolve.call(this);
};
/**
* @override
*/
Service.prototype.add = function add(object) {
/* istanbul ignore if */
if (this.get(object.name))
throw Error("duplicate name '" + object.name + "' in " + this);
if (object instanceof Method) {
this.methods[object.name] = object;
object.parent = this;
return clearCache(this);
}
return Namespace.prototype.add.call(this, object);
};
/**
* @override
*/
Service.prototype.remove = function remove(object) {
if (object instanceof Method) {
/* istanbul ignore if */
if (this.methods[object.name] !== object)
throw Error(object + " is not a member of " + this);
delete this.methods[object.name];
object.parent = null;
return clearCache(this);
}
return Namespace.prototype.remove.call(this, object);
};
/**
* Creates a runtime service using the specified rpc implementation.
* @param {RPCImpl} rpcImpl RPC implementation
* @param {boolean} [requestDelimited=false] Whether requests are length-delimited
* @param {boolean} [responseDelimited=false] Whether responses are length-delimited
* @returns {rpc.Service} RPC service. Useful where requests and/or responses are streamed.
*/
Service.prototype.create = function create(rpcImpl, requestDelimited, responseDelimited) {
var rpcService = new rpc.Service(rpcImpl, requestDelimited, responseDelimited);
for (var i = 0, method; i < /* initializes */ this.methodsArray.length; ++i) {
var methodName = util.lcFirst((method = this._methodsArray[i]).resolve().name).replace(/[^$\w_]/g, "");
rpcService[methodName] = util.codegen(["r","c"], util.isReserved(methodName) ? methodName + "_" : methodName)("return this.rpcCall(m,q,s,r,c)")({
m: method,
q: method.resolvedRequestType.ctor,
s: method.resolvedResponseType.ctor
});
}
return rpcService;
};
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