There are N Workers and one Master.
Workers are unstable and frequently can hang up or die.
If worker dies - it's ok because there will be error in callback in master.
But if worker hangs - there's a problem - callback in master also will
hangs indefinitely.
And this is a problem, I need to kill those hanging callbacks in master.
Is it possible to do something like this?
function safeCallToSomeRemoteService(callback){
var remoteServiceResponded = false
unsafeCallToSomeRemoteService(function(err, data){
remoteServiceResponded = true
callback(err, data)
})
setTimeout(function(){
if(!remoteServiceResponded){
somehow kill callback waiting for remote service
callback(new Error("Remote service hanged!"))
}
}, 3000)
}
Or, if it's not possible, is it safe to just ignore such hanged callbacks,
call callback on timeout and move on (while leaving hanging callback
active)?
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