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README
Apache-2.0

EasyFaaS

License

简介

EasyFaaS是一个依赖轻、适配性强、资源占用少、无状态且高性能的函数计算服务引擎。它有以下几个特点:

  • 依赖轻:EasyFaaS只依赖Linux内核,不强制依赖Docker、Kubernetes等外部服务

  • 适配性强:EasyFaaS可以运行在多种系统环境,包括Docker、Kubernetes及裸机等

  • 资源占用少:模块少,服务系统模块占用更小

  • 无状态:每个EasyFaaS Pod本身无状态且内部自治

  • 高性能:调度链路更短,更小的系统开销和更优的性能

适用于:

  • 边缘计算-Edge

  • 物联网-IoT

  • CICD

  • 私有化

  • CDN

使用手册

快速开始

开发手册

质量测试

引擎测评

核心功能

easyfaas_func

  • 提供基于事件机制,按需弹性伸缩的计算能力。

  • 支持多种语言运行时,开发者只需使用适合的语言编写自定义函数,无需管理底层基础设施。

  • 负责用户容器的全生命周期管理。

  • 支持用户配置函数的容器资源容量,提供动态的容器容量调度。

  • 支持同步和异步两种调用模式,支持多种可扩展的事件触发器。

  • 支持可自定义的函数管理服务。

  • 支持自定义语言运行时。

  • 支持多种运行平台,包括Docker、Kubernetes及裸机等。

技术架构

架构图

faaster_arch EasyFaaS以单Pod为最小服务单位,每个Pod中包含3个容器,分别为controller、funclet和runner-runtime。其中runner-runtime仅为init容器,准备必要的资源后即退出。

模块说明

1. 核心组件

1.1 controller

负责流量调度及容器池状态管理。

  • 实现容器调度功能。
  • 支持配置函数级别的并发。
  • 支持容器状态管理,按策略调度容器状态。
  • 支持健康检查,可以根据runtime的状态决定cooldown/reborn。

1.2 funclet

负责管理用户工作容器,包括基础容器资源及函数运行资源。

  • 容器管理:实现容器的init/warmup/reset流程。
  • 网络管理:实现容器网络相关功能,合理管理网络资源。
  • 挂载管理:实现用户容器的动态挂载,并定期回收用户容器的挂载目录。
  • 进程管理:需妥善管理用户容器产生的子进程,处理异常退出的子进程。
  • 资源容量管理:实现用户工作容器的内存资源动态调整。

1.3 runner-runtime

runner负责管理用户函数运行时,runtime支持各开发语言运行时,目前该组件当前仅提供容器镜像。

2. 可插拔组件

2.1 httptrigger组件 核心功能:扩展函数触发方式,支持HTTP请求触发函数调用 HTTP触发器实现了将某个函数关联到一个 URL 上,它可以接收 HTTP 请求,根据 HTTP 方法、URL,找到匹配的函数将 HTTP 相关信息传入并执行函数,获取执行结果,将函数执行结果包装为 HTTP 返回响应。

2.2 stubs组件 核心功能: 提供本地函数代码存储服务

  • 存储用户函数到本地工作目录

  • 支持直接调用本地函数代码

贡献

issues贡献: 如在使用中遇到问题,请在 https://github.com/baidu/EasyFaaS/issues 新建 issues 反馈问题。

维护者

版本更新

  • 1.0.0 EasyFaaS第一版发布,具备常用的函数管控、容器管理和调度、事件机制等功能;

讨论

如果您有任何意见或问题都可以提issue到github或gitee,我们将及时为您解答。

如在使用中遇到问题,快速沟通,可微信扫描二维码,加入EasyFaaS技术交流群,添加下列管理员微信,并备注“EasyFaaS”,管理员邀您入群

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简介

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