egg-oss

egg-oss

Install

$ npm i egg-oss

Configration

To enable oss plugin, you should change ${baseDir}/config/plugin.js

exports.oss = true;

Then fill in nessary information like OSS's bucket, accessKeyId, accessKeySecret in ${baseDir}/config/config.{env}.js

Mention, egg-oss support normal oss client and oss cluster client, based on ali-oss:

// normal oss bucket
exports.oss = {
  client: {
    accessKeyId: 'your access key',
    accessKeySecret: 'your access secret',
    bucket: 'your bucket name',
    endpoint: 'oss-cn-hongkong.aliyun.com',
    timeout: '60s',
  },
};

// cluster oss bucket
// need to config all bucket information under cluster
exports.oss = {
  client: {
    cluster: [{
      endpoint: 'host1',
      accessKeyId: 'id1',
      accessKeySecret: 'secret1',
    }, {
      endpoint: 'host2',
      accessKeyId: 'id2',
      accessKeySecret: 'secret2',
    }],
    schedule: 'masterSlave', //default is `roundRobin`
    timeout: '60s',
  },
};

Init in egg agent, default is false:

exports.oss = {
  useAgent: true,
};

Usage

You can aquire oss instance on app or ctx.

const path = require('path');

// upload a file in controller
module.exports = function*() {
  const parts = this.multipart();
  let object;
  let part;
  while ((part = yield parts) !== null) {
    if (part.length) {
      // arrays are busboy fields
      console.log('field: ' + part[0]);
      console.log('value: ' + part[1]);
      console.log('valueTruncated: ' + part[2]);
      console.log('fieldnameTruncated: ' + part[3]);
    } else {
      // otherwise, it's a stream
      console.log('field: ' + part.fieldname);
      console.log('filename: ' + part.filename);
      console.log('encoding: ' + part.encoding);
      console.log('mime: ' + part.mime);
      // file handle
      object = yield this.oss.put('egg-oss-demo-' + part.filename, part);
    }
  }
  console.log('and we are done parsing the form!');
  if (object) {
    console.log('get oss object: %j', object);
    this.unsafeRedirect(object.url);
  } else {
    this.body = 'please select a file to upload！';
  }
}

To learn OSS client API, please check oss document。

Create one more OSS buckets

Some application need to access more than one oss bucket, then you need to configure oss.clients, and you can create new oss instance dynamicly by app.oss.createInstance(config).

• ${appdir}/config/config.default.js

exports.oss = {
  clients: {
    bucket1: {
      bucket: 'bucket1',
    },
    bucket2: {
      bucket: 'bucket2',
    },
  },
  // shared by client, clients and createInstance
  default: {
    endpoint: '',
    accessKeyId: '',
    accessKeySecret: '',
  },
};

exports.bucket3 = {
  bucket: 'bucket3',
};

• ${appdir}/config/plugin.js

exports.oss = true;

• ${appdir}/app.js

module.exports = function (app) {
  const bucket1 = app.oss.get('bucket1');
  const bucket2 = app.oss.get('bucket2');
  // it will merge app.config.bucket3 and app.config.oss.default
  const bucket3 = app.oss.createInstance(app.config.bucket3);
}

Questions & Suggestions

Please open an issue here.

License

MIT