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go~istio加載wasm的步驟

參考

mse網關及插件的測試

網關轉發到上游服務

test

istio中加載wasm插件

istio-wasm

go語言通過tinygo編譯wasm文件

TinyGo 是一(yi)個 Go 編譯(yi)器,旨在用(yong)于微控(kong)制器,WebAssembly(WASM)和命(ming)令行工具等小型場(chang)景。它重用(yong)了 Go 語言工具和 LLVM 一(yi)起使用(yong)的庫,以提供編譯(yi)用(yong) Go 編程語言編寫(xie)的程序的另一(yi)種(zhong)方法。

tinygo build -o main.wasm -scheduler=none -target=wasi -gc=custom -tags='custommalloc nottinygc_finalizer' ./main.go

本地測試wasm具體步驟

Here is a brief explanation of the effective mechanism of the plugin:(下面對插件的(de)有效機制作(zuo)簡要說(shuo)明:)

  1. The user compiles the code into a Wasm file(用戶編譯代碼為wasm文件)
  2. The user builds the Wasm file into a Docker image(用戶將wasm文件構建為Docker鏡像)
  3. The user pushes the Docker image to the image registry(用戶將Docker鏡像推送到鏡像倉庫)
  4. The user creates the WasmPlugin resource(用戶創建WasmPlugin資源)
  5. Istio watches changes of the WasmPlugin resource(Istio監聽WasmPlugin資源的變化)
  6. The xDS proxy process in Higress Gateway obtains the configuration from Istio and finds the image address of the plugin.(Higress Gateway中的xDS代理進程從Istio獲取配置,并找到插件的鏡像地址)
  7. xDS proxy pulls images from the image registry.(xDS代理從鏡像倉庫拉取鏡像)
  8. xDS proxy extracts the Wasm file from the image.(xDS代理從鏡像中提取wasm文件)
  9. The envoy process in the Higress Gateway obtains the configuration from the xDS proxy and discovers the local path of the Wasm file.(Higress Gateway中的envoy進程從xDS代理獲取配置,并發現wasm文件的本地路徑)
  10. Envoy loads the Wasm file from the local file.(Envoy從本地文件加載wasm文件)

Here, Envoy uses the Extension Config Discovery Service (ECDS) mechanism to obtain the configuration and load the Wasm file, which realizes the update of the Wasm file and direct hot loading without causing any connection interruption, and the business traffic is completely lossless.(這里Envoy使用Extension Config Discovery Service(ECDS)機(ji)制獲取配置(zhi)并加載wasm文件(jian),實現(xian)了wasm文件(jian)的更新和直接熱加載,不(bu)會(hui)造成任何連接中斷(duan),業務流量完(wan)全無損。)

xDS代(dai)理(li)是(shi)一種用于管理(li)服(fu)(fu)(fu)務(wu)(wu)發(fa)現和(he)負載均衡的(de)(de)代(dai)理(li)程序(xu)。在微服(fu)(fu)(fu)務(wu)(wu)架構中(zhong),服(fu)(fu)(fu)務(wu)(wu)之間需要相互通(tong)信,而xDS代(dai)理(li)則可以幫助實(shi)現這種通(tong)信。xDS代(dai)理(li)通(tong)過(guo)與服(fu)(fu)(fu)務(wu)(wu)注冊中(zhong)心(xin)進行交互,獲取當前可用的(de)(de)服(fu)(fu)(fu)務(wu)(wu)實(shi)例信息,并根據負載均衡策略將請(qing)求分發(fa)到合適的(de)(de)服(fu)(fu)(fu)務(wu)(wu)實(shi)例上。同(tong)時,xDS代(dai)理(li)還能(neng)夠(gou)監控服(fu)(fu)(fu)務(wu)(wu)實(shi)例的(de)(de)健康狀(zhuang)態,及時更新服(fu)(fu)(fu)務(wu)(wu)列表,確保服(fu)(fu)(fu)務(wu)(wu)的(de)(de)高(gao)可用性和(he)穩(wen)定性。常(chang)見的(de)(de)xDS代(dai)理(li)有(you)Envoy、Nginx等。

TinyGo 是(shi)一(yi)個 Go 編譯器,旨在用于微控制(zhi)器,WebAssembly(WASM)和(he)命(ming)令行工具等小型(xing)場景。它(ta)重用了 Go 語言工具和(he) LLVM 一(yi)起使用的(de)庫,以提(ti)供(gong)編譯用 Go 編程語言編寫(xie)的(de)程序的(de)另一(yi)種方法。

posted @ 2024-04-07 08:40  張占嶺  閱讀(239)  評論(0)    收藏  舉報