iotdb-nats

POP interface to NATS

Introduction

Simple implementation, likely incomplete, to allow using NATS from a POP interface.

The "native" NodeJS interface is here.

Sample Code

Full examples can be found in ./samples, this is the bare necessities:

This

const _ = require("iotdb-helpers")
const nats = require("iotdb-nats")
const cfg = {
    "url": "nats://localhost",
}

Publish / Subscribe

Publish:

_.promise({
    nats$cfg: cfg,
})
    .then(nats.initialize)
    .then(nats.publish.p("foo", "hello, world"))
    .then(nats.close)
    .except(_.error.log)

Subscribe:

const _handler = _.promise(self => {
    console.log("-", "received", self.document)
})

_.promise({
    nats$cfg: cfg,
})
    .then(nats.initialize)
    .then(nats.subscribe.p("foo", _handler))
    .except(_.error.log)

Request / Response

Request:

const _response_handler = _.promise(self => {
    console.log("-", "timeout", self.nats$is_timeout)
    console.log("-", "document", self.document)

    self = nats.close.i(self)
})

_.promise({
    nats$cfg: cfg,
})
    .then(nats.initialize)
    .then(nats.request.p("foo", "what time is it", _response_handler))
    .except(_.error.log)

Responder:

const _request_handler = _.promise(self => {
    console.log("-", "REQUEST", self.document)

    self.document = "It is " + _.timestamp.make()
})

_.promise({
    nats$cfg: cfg,
})
    .then(nats.initialize)
    .then(nats.responder.p("foo", _request_handler))
    .except(_.error.log)