The ably-go from plimble

Ably Go

A Go client library for www.ably.io, the realtime messaging service.

Installation

~ $ go get -u github.com/ably/ably-go/ably

Using the Realtime API

Creating a client

client, err := ably.NewRealtimeClient(ably.NewClientOptions("xxx:xxx"))
if err != nil {
	panic(err)
}

channel := client.Channels.Get("test")

Subscribing to a channel for all events

sub, err := channel.Subscribe()
if err != nil {
	panic(err)
}

for msg := range sub.MessageChannel() {
	fmt.Println("Received message:", msg)
}

Subscribing to a channel for `EventName1` and `EventName2` events

sub, err := channel.Subscribe("EventName1", "EventName2")
if err != nil {
	panic(err)
}

for msg := range sub.MessageChannel() {
	fmt.Println("Received message:", msg)
}

Publishing to a channel

// send request to a server
res, err := channel.Publish("EventName1", "EventData1")
if err != nil {
	panic(err)
}

// await confirmation
if err = res.Wait(); err != nil {
	panic(err)
}

Announcing presence on a channel

// send request to a server
res, err := channel.Presence.Enter("presence data")
if err != nil {
	panic(err)
}

// await confirmation
if err = res.Wait(); err != nil {
	panic(err)
}

Announcing presence on a channel on behalf of other client

// send request to a server
res, err := channel.Presence.EnterClient("clientID", "presence data")
if err != nil {
	panic(err)
}

// await confirmation
if err = res.Wait(); err != nil {
	panic(err)
}

Getting all clients present on a channel

clients, err := channel.Presence.Get(true)
if err != nil {
	panic(err)
}

for _, client := range clients {
	fmt.Println("Present client:", client)
}

Subscribing to all presence messages

sub, err := channel.Presence.Subscribe()
if err != nil {
	panic(err)
}

for msg := range sub.PresenceChannel() {
	fmt.Println("Presence event:", msg)
}

Subscribing to 'Enter' presence messages only

sub, err := channel.Presence.Subscribe(proto.PresenceEnter)
if err != nil {
	panic(err)
}

for msg := range sub.PresenceChannel() {
	fmt.Println("Presence event:", msg)
}

Using the REST API

Introduction

All examples assume a client and/or channel has been created as follows:

client, err := ably.NewRestClient(ably.NewClientOptions("xxx:xxx"))
if err != nil {
	panic(err)
}

channel := client.Channel("test")

Publishing a message to a channel

err = channel.Publish("HelloEvent", "Hello!")
if err != nil {
	panic(err)
}

Querying the History

page, err := channel.History(nil)
for ; err == nil; page, err = page.Next() {
	for _, message := range page.Messages() {
		fmt.Println(message)
	}
}
if err != nil {
	panic(err)
}

Presence on a channel

page, err := channel.Presence.Get(nil)
for ; err == nil; page, err = page.Next() {
	for _, presence := range page.PresenceMessages() {
		fmt.Println(presence)
	}
}
if err != nil {
	panic(err)
}

Querying the Presence History

page, err := channel.Presence.History(nil)
for ; err == nil; page, err = page.Next() {
	for _, presence := range page.PresenceMessages() {
		fmt.Println(presence)
	}
}
if err != nil {
	panic(err)
}

Generate Token and Token Request

client.Auth.RequestToken()
client.Auth.CreateTokenRequest()

Fetching your application's stats

page, err := client.Stats(&ably.PaginateParams{})
for ; err == nil; page, err = page.Next() {
	for _, stat := range page.Stats() {
		fmt.Println(stat)
	}
}
if err != nil {
	panic(err)
}

Known limitations (work in progress)

As the library is actively developed couple of features are not there yet:

Realtime connection recovery is not implemented
Realtime connection failure handling is not implemented
ChannelsOptions and CipherParams are not supported when creating a Channel
Realtime Ping function is not implemented

Support and feedback

Please visit http://support.ably.io/ for access to our knowledgebase and to ask for any assistance.

You can also view the community reported Github issues.

Contributing

Fork it
Create your feature branch (git checkout -b my-new-feature)
Commit your changes (git commit -am 'Add some feature')
Ensure you have added suitable tests and the test suite is passing (make test)
Push to the branch (git push origin my-new-feature)
Create a new Pull Request

plimble / ably-go Goto Github PK

ably-go's Introduction