Folders

This node.js package implements the folders.io synthetic file system.

This Folders Module is based on a amazon web services, Module can be installed via "npm install folders-aws".

Example:

Installation (use --save to save to package.json)

npm install folders-aws

##S3

Basic Usage

Configuration

In order to access aws services , you must provide credentials . There are 2 ways to provide them

Credentials from Environment Variables

You can set environment variables to provide sdk credentials . This means that if you properly set your environment variables, you do not need to manage credentials in your application at all.

The keys names must be as follows:

export AWS_ACCESS_KEY_ID =  "your access key id" 
export AWS_SECRET_ACCESS_KEY = "your secreet access key "

Credentials in the constructor

This means you can pass credentials directly to the folders-aws constructor object as mentioned in next section .This method is not recommended

if both 'Credentials from Disk' 'and 'Credentials from Environment Variables' are set then former takes precedence over later

Constructor

Provider constructor, could pass the special option/param in the config param.

var FoldersAws = require('folders-aws');

var config = {
           accessKeyId: "Amazon Acess Id" (String),
           secretAccessKey : "Amazon access key" (String),
		   service : ['S3','EC2'],
		   region: ['us-west-2','us-east-1'],
		   bucket : ['mybucket1','mybucket2'],
		   partSize: 10 *1024*1024, // (optional) partsize  default is 5 MB 
 		   queueSize:5 // (optional) concurrency level
};

var aws = new FoldersAws("localhost-aws", config);

It is not recommended to provide 'accessKeyId' and 'secretAccessKey' in the constructor directly and use other methods as mentioned in configuration section to do this.

###ls

/**
 * @param uri, the uri to ls
 * @param cb, callback function. 
 * ls(uri,cb)
 */
 
aws.ls('s3/us-west-2/mybcuket1/video/', function(err,data) {
        console.log("Folder listing", data);
});

###cat

/**
 * @param uri, the file uri to cat 
 * @param cb, callback function.
 * cat(uri,cb) 
 */

aws.cat('s3/us-west-2/mybcuket1/video/movie.wmv', function(err,result) {
        console.log("Read Stream ", result.stream);
});

write

/**
 * @param path, string, the path 
 * @param data, the input data, 'stream.Readable' or 'Buffer'
 * @param cb, the callback function
 * write(path,data,cb)
 */

var writeData = getWriteStreamSomeHow('some_movie.mp4');

aws.write('s3/us-west-2/mybcuket1/video/some_movie.mp4',writeData, function(err,result) {
        console.log("Write status ", result);
});

unlink

/**
 * @param path, string, the path 
 * @param cb, the callback function
 * unlink(path,cb)
 */

aws.unlink('/path1/path2/some_movie.mp4', function(err) {
        
		if (err){
			console.log("Got error ",err);
		}
});

rmdir

/**
 * @param path, string, the path 
 * @param cb, the callback function
 * rmdir(path,cb)
 */

aws.rmdir('/path1/path2/', function(err) {
        
		if (err){
			console.log("Got error ",err);
		}
});

### mkdir

```js

/**
 * @param path, string, the path 
 * @param cb, the callback function
 * mkdir(path,cb)
 */

aws.mkdir('/path1/path2/', function(err) {
        
		if (err){
			console.log("Got error ",err);
		}
});

'service' , 'region' and 'bucket' attributes  in 'config' can be 'String' or 'Array' or 'Optional (undefined)'.