crudlet-pubnub

A streamable interface for Pubnub. This library also works nicely with crudlet, and other crudlet adapters.

Example

var pubnub      = require("crudlet-pubnub");
var crud        = require("crudlet");
 
var pubStream = pubnub({
  subscribeKey: "sub key"
  publishKey: "pub key",
  channel: "streamChannel"
});
 
// tail all remote messages
pubStream(crud.operation("tail", { name: "message" })).on("data", function(operation) {
  console.log(operation.data.message); // "hello"
});
 
// publish a remote message to the world
pubStream("message", { message: "hello" });

db pubnub(options[, reject])

Creates a new pubnub streamer.

• options
  • subscribeKey - your pubnub subscription key
  • publishKey - your pubnub publish key
  • channel - (optional) the channel to subscribe to
• reject - set of commands to reject - default is [load]

var pubStream = pubnub({
  subscribeKey: "sub key"
  publishKey: "pub key",
  channel: "streamChannel"
}, ["load", "anotherCommandToIgnore"]);
 
// does not get broadcasted
pubStream(crud.operation("anotherCommandToIgnore"));

db.addChannel(channel)

adds a new channel to subscribe to.

pubStream.addChannel(crud.operation("someChannel"));
pubStream.addChannel(crud.operation("anotherChannel")_;

stream.Readable db(operationName, options)

Publishes a new operation to pubnub.

pubStream({ name: "hello", data: { name: "world" }});
pubStream({ name "doSomething", data: { name: "world" }});

stream.Readable db(tail, filter)

Tails a remote operation. This is your subscription function.

db({ name: "tail" }).on("data", function(operation) {

});

Or you can do something like synchronizing databases between clients:

var crud   = require("crudlet");
var loki   = require("crudlet-loki");
var pubnub = require("crudlet-pubnub");
 
var pubdb = pubnub({
  subscribeKey: "sub key"
  publishKey: "pub key",
  channel: "streamChannel"
});
 
var db = crud.tailable(loki());
 
// listen for local operations on lokidb - pass to pubnub
db(crud.operation("tail")).pipe(crud.open(pubdb));
 
// listen for remote operations on pubnub - pass to lokidb
pubdb(crud.operation("tail")).pipe(crud.open(db));
 
// stored in loki & synchronized across clients
db(crud.operation("insert", { data: { name: "Juice" }}));