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ali-ons

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Aliyun Open Notification Service Client

// repository documentation

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# ali-ons

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[npm-image]: https://img.shields.io/npm/v/ali-ons.svg?style=flat-square
[npm-url]: https://npmjs.org/package/ali-ons
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[download-url]: https://npmjs.org/package/ali-ons

Aliyun Open Notification Service Client (base on opensource project [RocketMQ](https://rocketmq.apache.org/))

Sub module of [ali-sdk](https://github.com/ali-sdk/ali-sdk).

## Install

```bash
npm install ali-ons --save
```

## Usage

consumer

```js
'use strict';

const httpclient = require('urllib');
const Consumer = require('ali-ons').Consumer;
const consumer = new Consumer({
  httpclient,
  accessKeyId: 'your-accessKeyId',
  accessKeySecret: 'your-AccessKeySecret',
  consumerGroup: 'your-consumer-group',
  // namespace: '', // aliyun namespace support
  // isBroadcast: true,
});

consumer.subscribe(config.topic, '*', async msg => {
  console.log(`receive message, msgId: ${msg.msgId}, body: ${msg.body.toString()}`)
  // return Consumer.ACTION_RETRY; // you can return ACTION_RETRY, then this message will be directly retried
});

consumer.on('error', err => console.log(err));
```

If you want to use sql filter, you can subscribe a topic with a sql expression:
```js
consumer.subscribe(
  config.topic,
  {
    expressionType: 'SQL92',
    subString: 'a is not null'
  },
  async msg => {
    console.log(`receive message, msgId: ${msg.msgId}, body: ${msg.body.toString()}`)
  }
);
```
For more information about sql filter, see: [Filter Messages By SQL92](https://rocketmq.apache.org/rocketmq/filter-messages-by-sql92-in-rocketmq/)

producer

```js
'use strict';
const httpclient = require('urllib');
const Producer = require('ali-ons').Producer;
const Message = require('ali-ons').Message;

const producer = new Producer({
  httpclient,
  accessKeyId: 'your-accessKeyId',
  accessKeySecret: 'your-AccessKeySecret',
  producerGroup: 'your-producer-group',
  // namespace: '', // aliyun namespace support
});

(async () => {
  const msg = new Message('your-topic', // topic
    'TagA', // tag
    'Hello ONS !!! ' // body
  );

// set Message#keys
  msg.keys = ['key1'];

// delay consume
  // msg.setStartDeliverTime(Date.now() + 5000);

const sendResult = await producer.send(msg);
  console.log(sendResult);
})().catch(err => console.error(err))
```

## Secure Keys

Please contact to @gxcsoccer to give you accessKey

- [ons secure data](https://sharelock.io/1/UM02CJiYyhXiZDOn1nhX0iqPqMIQtdwI_T5BY3F-tHs.d8-ycA/01veKH9kgAuFuKCqlVPzGsyPWJ8mQLaKPJjjcB9tpdbvi9L6XQ/IgqDvAdVDMzV9lK2gQzyAj7q-CNk8-1tWrLmdqMV0oJ5qgky40/HgpZyKKDfOGAcyqQ20RUdRgCLRWqF8LUUko0uDl_L-ATNOsi5z/W2bsvBc8tAoqSwNR7u2Sqe6XkNmD98s3UQOK-6T8--VwTbHzcG/dwkHwie3EkGB-TbiMnbRh7_5A-DaOTCtALP3xvl4G0XKxuOriC/2yfuPp7WRucTAoqx2STO5Hv3MZEhh3IXf7YiOQ8pWDDqjLuQSY/_irqzYyeseY9m106ksMUq3-yS_qkBRIuoyL-hHk9ZRhGppsdA5/Dw4Pjg.fmNP3aFkLnvPuhlPRwNcng)

## License

[MIT](LICENSE)

## Contributors

[![Contributors](https://contrib.rocks/image?repo=ali-sdk/ali-ons)](https://github.com/ali-sdk/ali-ons/graphs/contributors)

Made with [contributors-img](https://contrib.rocks).

ali-ons

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