Timeo

Timeo is a cron job like service with co-flow and fiber yielding, with on socket message injection. .

Install to your repo:

$ npm install timeo --save

Version

0.2.0

Tech

Timeo uses a number of open source projects to work properly:

• co
• cron
• node fibers
• koa-compose

Example

var timeo = require('./lib/timeo.js');



var middleware_ex      = function *(next){

  var ctx   = this;
  ctx.a     = ctx.a ? ctx.a : 0;
  ctx.b     = ctx.b ? ctx.b : 1;
  ctx.c     = ctx.c ? ctx.c : 2;
  ctx.d     = ctx.d ? ctx.d : 3;
  ctx.count = ctx.count ? ctx.count : 0;
  ctx.msg   = 'starting';

  console.log(ctx.msg);
  yield next;

};

//The cron middleware will run every 5 seconds
var cronTime = '*/5 * * * * *';
var cron_middleware_ex  = function *(){

  var ctx   = this;
  ctx.a     = ctx.a + 1;
  ctx.b     = ((ctx.b * 2) + 1)/2;
  ctx.msg   = 'ping';
  ctx.count++;

  console.log('cron_middlware_ex');
  console.log(ctx);
  return true;
};

//The cron middleware will run every 7 seconds
var cronTime2 = '*/7 * * * * *';
var cron_middleware_ex2 = function *(){

  var ctx = this;

  ctx.a   = ctx.a - 1;
  ctx.b   = (ctx.b/2 + 1);
  ctx.c   = ctx.c + 1;
  ctx.d   = ctx.d * 2;
  ctx.msg = 'pong';
  ctx.count++;

  console.log('cron_middlware_ex2');
  console.log(ctx);
  return true;
};

//The cron middleware will run every 17 seconds
var cronTime3 = '*/17 * * * * *';
var cron_middleware_ex3 = function *(){

  var ctx = this;

  ctx.a   = ctx.a + 1;
  ctx.b   = ctx.b + 1;
  ctx.c   = ctx.c + 1;

  if(ctx.msg === 'ping') {
    ctx.d = (ctx.d * 2) / ctx.count;
  } else if(ctx.msg === 'pong'){
    ctx.d = ((ctx.d - 5) / 2) / (5 + ctx.count) ;
  }

  ctx.msg = 'strike';
  ctx.count++;
  console.log('cron_middlware_ex3');
  console.log(ctx);

  return true;
};

var middleware_ex2 = function *(next){
  console.log('Hello there!');
  yield next;
};

var middleware_ex3 = function *(next){
  console.log('Hello there 2!');
  yield next;
};

var middleware_ex4 = function *(next){
  var ctx = this;
  ctx.on('data', function(data){
    console.log('message: ' + data);
  });
  yield next;
};

//Complete function cannot be a generator function
var complete = function (){
  console.log('Cron finished');
};

var app = timeo();
app.use(middleware_ex);

//arugments app.cron(middleware gen function, the cron time, function run when complete, run on start, timezone)
app.cron(cron_middleware_ex,cronTime, complete, true, false);
app.use(middleware_ex2);
app.cron(cron_middleware_ex2, cronTime2, complete, true, false);
app.use(middleware_ex3);
app.cron(cron_middleware_ex3, cronTime3, complete, true, false);
app.use(middleware_ex4);
app.start(4444);


// Fired off by curl 127.0.0.1:4444

Development

Want to contribute? Great!

License

MIT

Authors

• Peter A. Tariche