fh-wfm-file

FeedHenry RainCatcher file

A module for FeedHenry RainCatcher that manages files. It provides :

• Backend services that expose REST endpoints to create and read operations for files .
• Services providing a REST client for files.

See raincatcher-file-angular module for angular client side implementation

Client-side usage

This module is packaged in a CommonJS format, exporting the name of the Angular namespace. The module can be included in an angular.js as follows:

var fileCore = require('fh-wfm-file/lib/client');
fileCore(mediator,{},$fh);

Topic Subscriptions

wfm:files:create

Description

Creating a new File

Example

var parameters = {
  fileToCreate: {
    //A Valid JSON Object
  },
  //Optional topic unique identifier.
  topicUid: "uniquetopicid"
}
 
mediator.publish("wfm:files:create", parameters);

wfm:files:list

Description

List All files

Example

var parameters = {
  userId : "userId"
  //Optional topic unique identifier.
  topicUid: "uniquetopicid"
}
 
mediator.publish("wfm:files:list", parameters);

Usage in an express backend

The server-side component of this WFM module exports a function that takes express and mediator instances as parameters, as in:

var express = require('express')
  , app = express()
  , mbaasExpress = mbaasApi.mbaasExpress()
  , mediator = require('fh-wfm-mediator/lib/mediator')
  ;
 
// configure the express app
...
 
// setup the wfm user router
require('fh-wfm-file/lib/cloud')(mediator, app);
 

Exposed endpoints

Base url : /file/wfm

resource	method	returns
/all	GET	array of files
/owner/:owner	GET	filtered array of files
/owner/:owner/upload/base64/:filename	POST	file metadata
/upload/binary	POST	file metadata

File metadata structure

   {
      owner: req.params.owner,
      name: req.params.filename,
      uid: uuid.create().toString()
   }

Supported storage engines

By default file module would store files in filesystem temporary folder.

AWS S3 storage

Allows to store files in AWS S3 buckets.

Options:

var storageConfig = {
  s3: {
    s3Options: {
      accessKeyId: process.env.AWS_S3_ACCESS_KEY,
      secretAccessKey: process.env.AWS_S3_ACCESS_KEY_SECRET,
      region: process.env.AWS_S3_REGION
    },
    bucket: "raincatcher-files"
  }
}
require('fh-wfm-file/lib/cloud')(mediator, storageConfig);

Gridfs MongoDB storage

Allows to store file in MongoDB database using Gridfs driver

Options:

var storageConfig = {
  gridFs: {
    mongoUrl: "mongodb://localhost:27017/files"
  }
};
require('fh-wfm-file/lib/cloud')(mediator, storageConfig);