syncano-client
v0.2.9
Published
Interact with your Syncano Sockets.
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Syncano Client Library
This library enables you to interact with the Syncano Sockets via Javascript.
Getting started
Installing from NPM
npm install syncano-client --save
Also available at UNPKG
<script src="https://unpkg.com/syncano-client"></script>
Usage
The library supports the CommonJS syntax:
var Syncano = require('syncano-client')
You can also use it with ES6 modules:
import Syncano from 'syncano-client'
Creating a connection
To create a connection, simply initialize the Syncano object with instance name:
const s = new Syncano('MY_INSTANCE_NAME')
Constructor
Syncano(instanceName, options?)
| Parameter | Type | Description |
|-----------|------|-------------|
| instanceName
| String | Syncano instance name. You can create one using Syncano CLI. |
| options
| Object | Optional connection config. |
| options.host
| String | Syncano host name. |
| options.token
| String | Allows you to initialize authorized connection. |
| options.loginMethod
| Function | Define custom login method |
Methods
s(endpoint, data?, options?)
Alias of s.post
method.
s.login(username, password)
Before you can send authorized requests, you need to login user with username and password. This method will automatically save user token for future requests.
s.login('john.doe', 'secret')
.then(user => console.log(`Hello ${user.first_name}`))
.catch(() => console.log('Invalid username or password.'))
s.logout()
Remove user token for future requests.
s.setToken(token)
Used to restore client session with token.
| Parameter | Type | Description |
|-----------|------|-------------|
| token
| String | User token used to authorize requests. |
To remove token, call setToken without parameter:
s.setToken()
s.get(endpoint, data?, options?)
Send GET
request to Syncano socket.
| Parameter | Type | Description |
|-----------|------|-------------|
| endpoint
| String | Name of socket and endpoint joined with '/': |
| data
| Object | Optional object send with request. |
| options
| Object | Optional request configuration. |
// countries - socket name
// list - endpoint name
s.get('countries/list')
// Pass additional data to request
s.get('countries/list', { order_by: 'name' })
// Configure request
s.get('countries/list', {}, {
headers: {
'Content-Type': 'application/json'
}
})
For more options, view axios documentation
s.post(endpoint, data?, options?)
Send POST
request to Syncano Socket. View s.get
method for more info.
s.delete(endpoint, data?, options?)
Send DELETE
request to Syncano Socket. View s.get
method for more info.
s.put(endpoint, data?, options?)
Send PUT
request to Syncano Socket. View s.get
method for more info.
s.patch(endpoint, data?, options?)
Send PATCH
request to Syncano Socket. View s.get
method for more info.
s.subscribe(endpoint, data?, callback)
Subscribe to given Syncano endpoint. Callback is fired each time something is pushed to channel bound to endpoint.
// your-client-side-file.js
// chat - socket name
// poll-messages - endpoint name
s.subscribe('chat/poll-messages', message => {
// Handle message
})
Public channels
# chat/socket.yml
endpoints:
global-messages:
channel: global-messages
create-message:
file: scripts/create-message.js
// chat/scripts/create-message.js
import {data, channel} from 'syncano-server'
data.messages
.create({
content: ARGS.content,
user: META.user.id
})
.then(message => {
channel.publish(`global-messages`, message)
})
Room channels
# chat/socket.yml
endpoints:
private-messages:
channel: private-messages.{room}
create-message:
file: scripts/create-message.js
// chat/scripts/create-message.js
import {data, channel} from 'syncano-server'
data.messages
.create({
room_id: ARGS.room_id,
content: ARGS.content,
user: META.user.id
})
.then(message => {
channel.publish(`private-messages.${ARGS.room_id}`, message)
})
s.subscribe('chat/private-messages', {room: 1}, message => {
// Handle message
})
User channels
First, you have to use special variable {user}
in your channel name. It'll be used to check if user trying to access endpoint have rights to do it.
# notifications/socket.yml
endpoints:
get:
channel: notifications.{user}
notify:
file: scripts/notify.js
Then you can subscribe to channel by passing socket and endpoint name. User channels require user_key
to be send in payload.
s.subscribe('notifications/get', {user_key: 'USER_KEY'}, notification => {
// Handle notification
})
To publish to the user channel, you have to know it's username
.
In channel name
notifications.{user}
-{user}
must always beusername
, not id or any other property.
// notifications/scripts/notify.js
import {data, channel} from 'syncano-server'
data.notifications
.create({
content: ARGS.content,
username: ARGS.username
})
.then(notification => {
channel.publish(`notifications.${ARGS.username}`, notification)
})
s.subscribe.once(endpoint, data?, callback)
Sometimes you want to listen only for one event and after that stop handling new events.
s.subscribe.('user-auth/verify', isVerified => {
// Handle verification
})