EStore

提供以WebSocket为通讯协议的Event Store服务.

Quickstart

docker run \
  --detach \
  --publish 8080:8080 \
  blackglory/estore

Install

从源代码运行

git clone https://github.com/BlackGlory/estore
cd estore
yarn install
yarn build
yarn bundle
yarn --silent start

从源代码构建

git clone https://github.com/BlackGlory/estore
cd estore
yarn install
yarn docker:build

Recipes

docker-compose.yml

version: '3.8'

services:
  estore:
    image: 'blackglory/estore'
    restart: always
    volumes:
      - 'estore-data:/data'
    ports:
      - '8080:8080'

volumes:
  estore-data:

API

interface INamespaceStats {
  items: number
}

interface IAPI {
  getAllNamespaces(): string[]
  getAllItemIds(namespace: string): string[]
  getAllEvents(namespace: string, itemId: string): JSONValue[]

  getNamespaceStats(namespace: string): INamespaceStats

  clearItemsByNamespace(namespace: string): null

  removeItem(namespace: string, itemId: string): null

  /**
   * 获得指定项目内包含的事件数量, 该值等同于下一个事件插入时的索引号.
   * 对于不存在的项目, 它会返回0.
   */
  getItemSize(namespace: string, itemId: string): number

  /**
   * @param nextEventIndex 如果指定, 则会在eventIndex不等于下一个index时抛出EventIndexConflict错误.
   * @throws {EventIndexConflict}
   */
  appendEvent(
    namespace: string
  , itemId: string
  , event: JSONValue
  , nextEventIndex?: number
  ): null

  getEvent(
    namespace: string
  , itemId: string
  , eventIndex: number
  ): JSONValue | null
}

class EventIndexConflict extends CustomError {}

环境变量

ESTORE_HOST, ESTORE_PORT

通过环境变量ESTORE_HOST和ESTORE_PORT决定服务器监听的地址和端口, 默认值为localhost和8080.

ESTORE_WS_HEARTBEAT_INTERVAL

通过环境变量ESTORE_WS_HEARTBEAT_INTERVAL可以设置WS心跳包(ping帧)的发送间隔, 单位为毫秒. 在默认情况下, 服务不会发送心跳包, 半开连接的检测依赖于服务端和客户端的运行平台的TCP Keepalive配置.

当ESTORE_WS_HEARTBEAT_INTERVAL大于零时, 服务会通过WS的ping帧按间隔发送心跳包.

客户端

• JavaScript/TypeScript(Node.js, Browser): https://github.com/BlackGlory/estore-js