使用 tinygo 开发 Istio WasmPlugin

云计算 2023-05-28 LOVEHL^ˇ^ 手机阅读

wasme 只支持到 istio 1.9，而我使用的是 Istio 1.14，因此本篇直接使用 tinygo 进行验证和学习。

1. 安装 tinygo

  • 要求
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brew tap tinygo-org/tools
brew install tinygo
  • 查看版本
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tinygo version

tinygo version 0.27.0 darwin/amd64 (using go version go1.19.3 and LLVM version 15.0.0)

2. 创建 wasm-istio 项目

  • 初始化项目
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mkdir wasm-istio
cd wasm-istio
go mod init wasm-istio
  • 编辑 main.go
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kubectl get wasmplugins.extensions.istio.io

NAME                     AGE
add-header-hello-world   27s
  • 查看 Istiod 日志
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2023-02-22T08:31:10.017446Z info    ads Push debounce stable[75] 1 for config WasmPlugin/default/add-header-hello-world: 100.09877ms since last change, 100.098558ms since last push, full=true
2023-02-22T08:31:10.017744Z info    ads XDS: Pushing:2023-02-22T08:31:10Z/49 Services:10 ConnectedEndpoints:3 Version:2023-02-22T08:31:10Z/49
2023-02-22T08:31:10.017990Z info    ads LDS: PUSH for node:istio-egressgateway-7fcb98978c-ppkdx.istio-system resources:0 size:0B
2023-02-22T08:31:10.018241Z info    ads LDS: PUSH for node:istio-ingressgateway-55b6cffcbc-w6lwv.istio-system resources:1 size:3.7kB
2023-02-22T08:31:10.020476Z info    ads LDS: PUSH for node:blog-7cc68f9d6b-m9rpd.default resources:20 size:96.8kB
2023-02-22T08:31:10.066004Z info    ads ECDS: PUSH request for node:blog-7cc68f9d6b-m9rpd.default resources:1 size:327B