# Source: vertx-config-js/config_retriever.js

    /*
     * Copyright 2014 Red Hat, Inc.
     *
     * Red Hat licenses this file to you under the Apache License, version 2.0
     * (the "License"); you may not use this file except in compliance with the
     * License.  You may obtain a copy of the License at:
     *
     * http://www.apache.org/licenses/LICENSE-2.0
     *
     * Unless required by applicable law or agreed to in writing, software
     * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
     * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
     * License for the specific language governing permissions and limitations
     * under the License.
     */

    /** @module vertx-config-js/config_retriever */
    var utils = require('vertx-js/util/utils');
    var Vertx = require('vertx-js/vertx');
    var ReadStream = require('vertx-js/read_stream');
    var Future = require('vertx-js/future');

    var io = Packages.io;
    var JsonObject = io.vertx.core.json.JsonObject;
    var JConfigRetriever = Java.type('io.vertx.config.ConfigRetriever');
    var ConfigRetrieverOptions = Java.type('io.vertx.config.ConfigRetrieverOptions');
    var ConfigChange = Java.type('io.vertx.config.ConfigChange');

    /**
     Defines a configuration retriever that read configuration from
     @class
    */
    var ConfigRetriever = function(j_val) {

      var j_configRetriever = j_val;
      var that = this;

      /**
       Reads the configuration from the different
       and computes the final configuration.

       @public
       @param completionHandler {function} handler receiving the computed configuration, or a failure if the configuration cannot be retrieved
       */
      this.getConfig = function(completionHandler) {
        var __args = arguments;
        if (__args.length === 1 && typeof __args[0] === 'function') {
          j_configRetriever["getConfig(io.vertx.core.Handler)"](function(ar) {
          if (ar.succeeded()) {
            completionHandler(utils.convReturnJson(ar.result()), null);
          } else {
            completionHandler(null, ar.cause());
          }
        });
        } else throw new TypeError('function invoked with invalid arguments');
      };

      /**
       Closes the retriever.

       @public

       */
      this.close = function() {
        var __args = arguments;
        if (__args.length === 0) {
          j_configRetriever["close()"]();
        } else throw new TypeError('function invoked with invalid arguments');
      };

      /**
       Gets the last computed configuration.

       @public

       @return {Object} the last configuration
       */
      this.getCachedConfig = function() {
        var __args = arguments;
        if (__args.length === 0) {
          return utils.convReturnJson(j_configRetriever["getCachedConfig()"]());
        } else throw new TypeError('function invoked with invalid arguments');
      };

      /**
       Registers a listener receiving configuration changes. This method cannot only be called if
       the configuration is broadcasted.

       @public
       @param listener {function} the listener
       */
      this.listen = function(listener) {
        var __args = arguments;
        if (__args.length === 1 && typeof __args[0] === 'function') {
          j_configRetriever["listen(io.vertx.core.Handler)"](function(jVal) {
          listener(utils.convReturnDataObject(jVal));
        });
        } else throw new TypeError('function invoked with invalid arguments');
      };

      /**

       @public

       @return {ReadStream} the stream of configurations. It's single stream (unicast) and that delivers the last known config and the successors periodically.
       */
      this.configStream = function() {
        var __args = arguments;
        if (__args.length === 0) {
          if (that.cachedconfigStream == null) {
            that.cachedconfigStream = utils.convReturnVertxGen(ReadStream, j_configRetriever["configStream()"](), undefined);
          }
          return that.cachedconfigStream;
        } else throw new TypeError('function invoked with invalid arguments');
      };

      // A reference to the underlying Java delegate
      // NOTE! This is an internal API and must not be used in user code.
      // If you rely on this property your code is likely to break if we change it / remove it without warning.
      this._jdel = j_configRetriever;
    };

    ConfigRetriever._jclass = utils.getJavaClass("io.vertx.config.ConfigRetriever");
    ConfigRetriever._jtype = {
      accept: function(obj) {
        return ConfigRetriever._jclass.isInstance(obj._jdel);
      },
      wrap: function(jdel) {
        var obj = Object.create(ConfigRetriever.prototype, {});
        ConfigRetriever.apply(obj, arguments);
        return obj;
      },
      unwrap: function(obj) {
        return obj._jdel;
      }
    };
    ConfigRetriever._create = function(jdel) {
      var obj = Object.create(ConfigRetriever.prototype, {});
      ConfigRetriever.apply(obj, arguments);
      return obj;
    }
    /**
     Creates an instance of the default implementation of the {@link ConfigRetriever}.

     @memberof module:vertx-config-js/config_retriever
     @param vertx {Vertx} the vert.x instance
     @param options {Object} the options, must not be <code>null</code>, must contain the list of configured store.
     @return {ConfigRetriever} the created instance.
     */
    ConfigRetriever.create = function() {
      var __args = arguments;
      if (__args.length === 1 && typeof __args[0] === 'object' && __args[0]._jdel) {
        return utils.convReturnVertxGen(ConfigRetriever, JConfigRetriever["create(io.vertx.core.Vertx)"](__args[0]._jdel));
      }else if (__args.length === 2 && typeof __args[0] === 'object' && __args[0]._jdel && (typeof __args[1] === 'object' && __args[1] != null)) {
        return utils.convReturnVertxGen(ConfigRetriever, JConfigRetriever["create(io.vertx.core.Vertx,io.vertx.config.ConfigRetrieverOptions)"](__args[0]._jdel, __args[1] != null ? new ConfigRetrieverOptions(new JsonObject(Java.asJSONCompatible(__args[1]))) : null));
      } else throw new TypeError('function invoked with invalid arguments');
    };

    /**
     Same as {@link ConfigRetriever#getConfig}, but returning a  object. The result is a
     .

     @memberof module:vertx-config-js/config_retriever
     @param retriever {ConfigRetriever} the config retrieve
     @return {Future} the future completed when the configuration is retrieved
     */
    ConfigRetriever.getConfigAsFuture = function(retriever) {
      var __args = arguments;
      if (__args.length === 1 && typeof __args[0] === 'object' && __args[0]._jdel) {
        return utils.convReturnVertxGen(Future, JConfigRetriever["getConfigAsFuture(io.vertx.config.ConfigRetriever)"](retriever._jdel), undefined);
      } else throw new TypeError('function invoked with invalid arguments');
    };

    module.exports = ConfigRetriever;