bluebirdjs promises wrapped inside a for loop

Question

I have a bunch of functions used to provide data to my service. I want to loop through each of them and stop as soon as one of them returns the desired result. If the first one

Answer 1

if promises are not a hard constraint caolan/async#eachSeries or similar might help. Something like...

// var Promise = require(?)
// var async = require("async")
handleData: asyncProviderFinder

...

function asyncProviderFinder(address){
  var self = this;
  return new Promise(function(resolve, reject){
    async.eachSeries(
      self.listAllAvailableProviders, 
      function iterate(provider, next){
        var handler = provider;
        new handler().getData(address)
        .then( function(value){
          Logger.info(value);
          next("abort"); // callback any error to abort future iterations
          return resolve(value);
        })
        .catch( function (err){
          Logger.error(err);
          next();
        });
      },
      function callback(err, firstProvider){
        if ((firstProvider === undefined) && !err ){ reject(""); }
      }
    );
  });
}