service-model/dispatcher/versionMessageFilter.js

An object oriented web service framework inspired by Windows Communication Foundation.

var __extends = (this && this.__extends) || function (d, b) {
    for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
    function __() { this.constructor = d; }
    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
var semver_1 = require("semver");
var messageFilter_1 = require("./messageFilter");
/**
 * @hidden
 */
var VersionMessageFilter = (function (_super) {
    __extends(VersionMessageFilter, _super);
    function VersionMessageFilter(version) {
        _super.call(this);
        this._cache = new Map();
        if (!version) {
            throw new Error("Missing required argument 'version'.");
        }
        this._version = version;
    }
    VersionMessageFilter.prototype.match = function (message) {
        var acceptVersion = message.headers.get("Accept-Version");
        if (!acceptVersion)
            return true;
        var satisfies = this._cache.get(acceptVersion);
        if (satisfies === undefined) {
            satisfies = semver_1.satisfies(this._version, acceptVersion);
            this._cache.set(acceptVersion, satisfies);
        }
        return satisfies;
    };
    return VersionMessageFilter;
})(messageFilter_1.MessageFilter);
exports.VersionMessageFilter = VersionMessageFilter;