YuaSharder

YuaSharder is a clustering and sharding library for Discord Eris written in typescript with typings.

It was written explicitly for Yua Bot but I decided to open source it as there are not too many good working libraries for sharding and clustering.

Installation

Node Version: ᵗᵇʰ ᶦᵈᵏ ˡᵐᵃᵒ

npm install yuasharder

Simple Usage

index.js

const { Manager } = require('yuasharder')

const manager = new Manager("Cool-Discord-Token", "/bot.js", {})

manager.launch()

bot.js

const { Base } = require('yuasharder')

class Bot extends Base {
  constructor(props) {
    super(props)
  }
  init() {
    console.log("Logged in as", this.client.user.username)
  }
}

module.exports = Bot

package.json

{
  "name": "my-bot",
  "version": "1.0.0",
  "description": "My cool bot",
  "main": "index.js",
  "author": "You silly",
  "license": "ISC",
  "dependencies": {
    "yuasharder": "^1.0.0"
  }
}

Start with node .

More Info/Examples

yuasharder.Manager(token, file, options)

parameter	Type	Default	Description
token	string	undefined	Bot API Token
file	string	undefined	File path relative to root
options	ClusterManagerOptions	null	Options passed to manager
options.totalShards	number	null	Specifies amount of shards, checks gateway if null
options.totalClusters	number	node:os.numCPUs()	Amount fo clusters to spread shards across
options.firstShardID	number	0	Shard that yuasharder should start on
options.lastShardID	number	firstShardID - 1	Shard that yuasharder should end on
options.clusterTimeout	number	5	Timeout between launching each cluster (seconds)
options.statsInterval	number	60	Interval between each stats event emitted (seconds)
options.guildsPerShard	number	1300	Amount of guilds per shard (totalShards must be null)
options.clientOptions	Eris.ClientOptions	{}	Eris client options to pass to bot

Functions

Manager extends node:events.EventEmitter

launch() void

Parameters	Type	Description

Launch yuasharder

broadcast(start, message) void

Parameters	Type	Description
start	number	Cluster to start boradcasting from
message	IPCEvents	Message to broadcast

Broadcast message to all clusters

sendTo(cluster, message) void

Parameters	Type	Description
cluster	number	Cluster to send message to
message	IPCEvents	Message to broadcast

Send message to specific cluster

Events

Event	Callback	Emits on?
info	string	General info
error	any	On error
stats	MasterStats	Stats interval
clusterInfo	ClusterMessages	General cluster info
clusterWarn	ClusterMessages	Something semi dangerous
clusterError	ClusterMessages	On cluster error
shardConnect	ShardMessages	When shard connects
shardDisconnect	ShardMessages	When shard disconnects
shardReady	ShardMessages	When a shard becomes ready
shardResume	ShardMessages	When shard resumes
shardWarn	ShardMessages	Something semi dangerous occurs
shardError	ShardMessages	When shard runs into error

Example Usage

const { Manager } = require('yuasharder')

const manager = new Manager("Cool-Discord-Token", "/bot.js", {
  totalShards: null, // Will Check Gateway For Recommended Shards
  totalClusters: null, // Will Use Number Of Cpus
  firstShardID: null, // Will Use Default
  lastShardID: null, // Will Use Default
  statsInterval: 30, // Every 30 seconds
  guildsPerShard: 1000, // 1000 Guilds Per Shard
  clientOptions: {
    allowedMentions: {
      everyone: false,
    },
  },
})

manager.on('stats', (stats) => {
  console.log(stats)
})

manager.launch()

---

yuasharder.Base(props)

Base should not be constructed as it will not do anything, it should always be extended then exported

parameter	Type	Description
props	BaseClassProps	props given to contructor by yuasharder
props.client	Eris.Client	Clusters eris client instance
options.ipc	IPCInterface	Clusters IPC instance
options.clusterID	number	Cluster instance is located on

Props

.client Eris.Client

Eris client instance

.ipc IPCInterface

IPC for cluster instance

.clusterID number

Id of cluster current instance is on

Functions

init() void

Parameters	Type	Description

Used to start code

Example Usage

It looks like this because yuasharder will create an instance of your bot class extending Base then pass the props shown above to it. It will then run init to start your code

const { Base } = require('yuasharder')

class Bot extends Base {
  constructor(props) {
    super(props)
  }
  init() {
    const bot = this.client
    const ipc = this.ipc
    const clusterID = this.clusterID
    console.log("Logged in as", bot.user.username, "on cluster", clusterID)
  }
}

module.exports = Bot

---

IPC

Default Events

Event	Callback	Description
stats	MasterStats	All stats

Functions

register(event, callback) void

Parameters	Type	Description
event	string	Events Name
callback	(msg: IPCEvents) => void	Callback function

Register event listener for IPC event

unregister(event) void

Parameters	Type	Description
event	string	Events name

Unregister event listener

broadcast(event, message) void

Parameters	Type	Description
event	string	Events name
message	object	Message to send with event

Broadcast message to all clusters

sendTo(clusterID, event, message) void

Parameters	Type	Description
clusterID	number	Cluster to send to
event	string	Events name
message	object	Message to send with event

Send message to specific cluster

Examples

const { Base } = require('yuasharder')

class Bot extends Base {
  constructor(props) {
    super(props)
  }
  init() {

    this.ipc.register('stats', (stats) => {
      console.log(stats)
    })

  }
}

module.exports = Bot

const { Base } = require('yuasharder')

class Bot extends Base {
  constructor(props) {
    super(props)
  }
  init() {

    this.ipc.register('PING', (clusterID) => {
      this.ipc.sendTo(clusterID, "PONG", {
        clusterID: this.clusterID,
        uptime: this.client.uptime
      })
    })

    this.ipc.register('PONG', (msg) => {
      console.log(msg.clusterID, "responded with", msg.uptime, "uptime")
    })

    this.ipc.broadcast("PING")

  }
}

module.exports = Bot

Random Extra

Just some random extra stuff that may or may not be helpful

Process Event Object

{
  payload: "event",
  msg: {
    ...
  }
}

IPC Event Object

{
  _eventName: "event",
  msg: {
    ...
  }
}

Issues / Feature Request

Please submit an issue in the issues section and I will try to get back asap

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

Please make be sure to TEST all functionality before requesting

License

AGPL-3.0