// Copyright (c) 2019, 2020, Oracle and/or its affiliates. All rights reserved
|
|
//-----------------------------------------------------------------------------
|
//
|
// You may not use the identified files except in compliance with the Apache
|
// License, Version 2.0 (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.
|
//
|
//-----------------------------------------------------------------------------
|
|
'use strict';
|
|
const nodbUtil = require('./util.js');
|
|
//-----------------------------------------------------------------------------
|
// deqOne()
|
// Returns a single message from the queue, if one is available.
|
//-----------------------------------------------------------------------------
|
async function deqOne() {
|
nodbUtil.checkArgCount(arguments, 0, 0);
|
return await this._deqOne();
|
}
|
|
|
//-----------------------------------------------------------------------------
|
// deqMany()
|
// Returns an array of messages from the queue, up to the maximum specified,
|
// if any are available.
|
//----------------------------------------------------------------------------
|
async function deqMany(maxMessages) {
|
nodbUtil.checkArgCount(arguments, 1, 1);
|
nodbUtil.assert(typeof maxMessages === 'number', 'NJS-005', 1);
|
return await this._deqMany(maxMessages);
|
}
|
|
|
//-----------------------------------------------------------------------------
|
// enqOne()
|
// Enqueues a single message into the queue.
|
//-----------------------------------------------------------------------------
|
async function enqOne(message) {
|
nodbUtil.checkArgCount(arguments, 1, 1);
|
nodbUtil.assert(typeof message === 'object' || typeof message === 'string',
|
'NJS-005', 1);
|
return await this._enqOne(message);
|
}
|
|
|
//-----------------------------------------------------------------------------
|
// enqMany()
|
// Enqueues multiple messages into the queue at the same time, avoiding
|
// multiple round-trips.
|
//----------------------------------------------------------------------------
|
async function enqMany(messages) {
|
nodbUtil.checkArgCount(arguments, 1, 1);
|
nodbUtil.assert(Array.isArray(messages), 'NJS-005', 1);
|
return await this._enqMany(messages);
|
}
|
|
|
class AqQueue {
|
|
_extend() {
|
this.deqOne = nodbUtil.callbackify(deqOne);
|
this.deqMany = nodbUtil.callbackify(deqMany);
|
this.enqOne = nodbUtil.callbackify(enqOne);
|
this.enqMany = nodbUtil.callbackify(enqMany);
|
}
|
|
}
|
|
module.exports = AqQueue;
|