ack-node

Common server-side functionality, wrapped in one package, the Acker way

Table of Contents

• Installation
• Usage
• Modules
  • ack.router
  • ack.promise
  • ack.ip
  • ack.path
  • ack.file
  • ack.jwt
  • ack.req
  • ack.reqres
  • ack.router
• ack-x

Installation

$ npm install ack-node --save

Usage

var ack = require('ack-node')

Modules

ack.promise

See ack-p for full details

executed already running promise

ack.promise('val1','val2').then((v1,v2)=>console.log(v1,v2))

ack.Promise

Traditional resolve/reject promise

ack.Promise((res,rej)=>{}).then()

ack.ip

Internet Protocol address functionality

/** matches 192.168 and other internal network ips */
ack.ip('192.168.0.0').isPrivate()
 
/** matches host machine ips */
ack.ip('127.0.0.0').isHost()

ack.path - system directory functionality

See ack-path for full details

//created directory if not existant
ack.path(__dirname).paramDir().then()
 
//string manipulation
ack.path(__dirname).join('a','b','c.js').path// = __dirname/a/b/c.js
 
//string manipulation
ack.path('/test/file.js').removeExt().path// = /test/file
 
//string manipulation
ack.path('/test/file').removeExt().path// = /test/file
 
//string manipulation
ack.path('/test/file.js').removeFile().path// = /test/
 
//string manipulation
ack.path('/test/').removeFile().path// = /test/
 
//path delete promise
ack.path(__dirname).delete().then()
 
ack.path(__dirname).sync().exists()//NONASYNC

ack.file

System file functionality

See ack-path for full details

ack.file(__dirname).delete().then()
ack.file(__dirname).getMimeType()//Ex: application/javascript
ack.file(__dirname).stat().then(stats=>stats.size)
ack.file(__dirname).write(string).then()
ack.file(__dirname).append(string).then()
 
//string manipulations
ack.file(__dirname).join('test-file.js').path
ack.file(__dirname).Join('test-file.js').path//creates new instance, leaving original alone
ack.file(__dirname).join('test-file.js').removeExt().path//Manipulates path by removing one file extension

ack.jwt

json web tokens. See jsonwebtoken for full details

var payload = {some:'data',hello:'world'}
var signed = ack.jwt(payload,'your-secret-key').sign()
 
ack.jwt(signed,'your-secret-key').verify().then(payload)

ack.req

Outbound http/https requests based on functionality provived by request

Send Example

ack.req(url)
.send()
.then((body,response)=>console.log(body))
.catch(e=>console.error(e))

Send Example Without Promise Spread

ack.req(url).set('spread',false)
.send()
.then(response=>console.log(response.body))
.catch(e=>console.error(e))

Post Example

ack.req(url).post(data)
.then((body,response)=>console.log(body))
.catch(e=>console.error(e))

Put Example

ack.req(url).put(data)
.then((body,response)=>console.log(body))
.catch(e=>console.error(e))

Delete Example

ack.req(url).delete()
.then((body,response)=>console.log(body))
.catch(e=>console.error(e))

ack.reqres

Request response handler

sendJson(variable, pretty)

app.use((req,res)=>{
  ack.reqres(req,res).sendJSON( {hello:"world"} )
})

send file

app.use((req,res)=>{
  const reqres = ack.reqres(req,res)
  reqres.input.header('content-type','application/pdf')
  reqres.send( pdfVar )
})

ack.router

Access to Middleware

const ackRouters = require('ack-node').router()

Mix with Connect or Express

var app = require('express')()//common request routing app
 
//Ignore fav.ico, timeout in 3000ms, and all requests will be gzipped if applicable
app.get('/', ackRouters.ignoreFavors(), ackRouters.timeout(3000), ackRouters.compress)

Router Table of Contents

• .cacheFor(seconds)
• .notFound( optional_message )
• .timeout(ms, options)
• .compress(options)
• .cors(options)
• .relocate(url)
• .ignoreFavors()
• .closeDevErrors()
• .htmlCloseError(options)
• .jsonCloseError(options)
• .closeProductionErrors()
• .consoleNonProductionErrors(options)
• .urlVarAsAuthHeader(varName)
• .cookieAsAuthHeader(varName)
• .jwt(secret,options)
• .logging(format,options)
• .logToArray(options)
• .errorsToArray(options)
• .uploadByName(name, options)
• .methodNotAllowed(message)
• .throw(ErrorOrMessage)
• .parseBody(options)
• .parseMultipartFields()
• .uploadOneByName(name, options)
• .uploadOneByNameToPath(name, path, options)
• .uploadArrayByName(name, options)
• .localNetworkOnly(message)
• .noRobots()

.cacheFor(seconds)

• return middleware that sets cache-control header for every request

.notFound( optional_message )

• optional_message: default='Not Found - ${path}'

.timeout(ms, options)

• returns middleware that forces requests to timeout. Uses npm connect-timeout

.compress(options)

• returns middleware that GZIP requests. See npm compression

.cors(options)

• returns middleware for cross orgin services
• options {origin:'url-string'}. No options means allow all. See package cors

.relocate(url)

• return middleware that pushes requests to a new url

.ignoreFavors()

• returns middleware that 404s requests matching typical fav.ico files

.closeDevErrors()

• returns middleware that closes errors with crucial details needed during development

.htmlCloseError(options)

• Returns universal error handler middleware
• options {debug:true/false, debugLocalNetwork:true}

.jsonCloseError(options)

• returns middleware that handles errors with JSON style details
• options {debug:true/false, debugLocalNetwork:true}

.closeProductionErrors()

• returns middleware that conditions errors returned to provide useful responses without exact detail specifics on excepetions thrown

.consoleNonProductionErrors(options)

• returns middleware that conditions errors returned to provide useful responses with exact detail specifics on excepetions thrown

.urlVarAsAuthHeader(varName)

• returns middleware that upgrades a url variable into an Authorization header

.cookieAsAuthHeader(varName)

• returns middleware that upgrades a cookie variable into an Authorization header

.jwt(secret,options)

• returns middleware that handles the processing of JWT

• options {...}

  • requestKeyName: 'auth'//where parsed data will live (aka as requestProperty)

.logging(format,options)

returns middleware that makes server logging colorful and useful. Request-end result logging. See npm morgan.

• format
  • default dev env format: 'dev' aka ':method :url :status :res[content-length] - :response-time ms'
  • default pro env format: ':http-version/:method :url-short :colored-status :res[content-length] - :response-time ms :remote-addr :remote-user'
  • "url-short" is a custom made morgan.token()
  • "colored-status" is a custom made morgan.token()

.logToArray(options)

returns middleware the records requests to an array of specified maxLength. Uses .logging(format,options)

• options
  • array:[]
  • maxLength:25

.errorsToArray(options)

returns middleware the records errors to an array of specified maxLength

• options
  • array:[]
  • maxLength:25

.uploadByName(name, options)

• returns middleware that uploads files. Creates req.files array
• **options - see function paramUploadOptions

.methodNotAllowed(message)

• returns middleware that throws 405 errors on request

.throw(ErrorOrMessage)

• returns middleware that throws 400 errors on request

.parseBody(options)

• returns middleware that parses request bodies into request.body object
• options
  • limit:102400
  • see bodyParser for more

.parseMultipartFields()

• returns middleware that parse multi-part requests. Creates request.body which contains all form post fields

NOTE: Cannot be used with any other multipart reader/middleware. Only one middleware can read a stream

.uploadOneByName(name, options)

• returns middleware that uploads only one file. Creates req[name] file
• options - see function paramUploadOptions
  • Cannot be used with any other multipart reader/middleware. Only one middleware can read a stream
  • Any BODY/POST variables will be parsed and made available as req.body

.uploadOneByNameToPath(name, path, options)

• for more information see uploadOneByName
• name - input file field name expected to receive file on
• path - exact file path or if folder path, then file upload name will be used
• options - see function paramUploadOptions

NOTES:

• Cannot be used with any other multipart reader/middleware. Only one middleware can read a stream
• Any BODY/POST variables will be parsed and made available as req.body

.uploadArrayByName(name, options)

• returns middleware that uploads an array of files. Creates req[name] array
• options - see function paramUploadOptions
  • Cannot be used with any other multipart reader/middleware. Only one middleware can read a stream
  • Any BODY/POST variables will be parsed and made available as req.body

.localNetworkOnly(message)

• returns middleware that only allows local network requests

.noRobots()

• returns middleware that responds with a text/plain message of "User-agent: *\rDisallow: /"

ack-x

Additional lower level functionality is provided by ack-x

Date Example

require('ack-node').date().now().mmddyyyy()

The above and many more examples of modules provided by ack-x can be seen here