Zetta Apps Reference Docs

Zetta JavaScript Apps

Zetta apps are exported module functions, and differ from Drivers and Scouts.

module.exports = function(server) {
  var arduinoQuery = server.where({type: 'arduino'});
  server.observe([arduinoQuery], function(arduino){
    //Work with arduino!
  });
}

Exported Module – function(server)

• server Server

Method: Server#where(query)

• query Object

Generate a query for use inside zetta. All options properties are &&’d together.

var query = server.where({foo: 'bar'});

Method: Server#observe(queries, cb)

• queries Array of Query
• cb Function

Wait for devices to come online. Execute the callback when all devices conforming to queries have come online.

var queryFoo = server.where({type: 'foo'});
var queryBar = server.where({type: 'bar'});
server.observe([queryFoo, queryBar], function(foo, bar){
});