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sablier/docs/plugins/istio.md
Alexis Couvreur 3891027e23 feat(plugin): add proxywasm plugin (#284) 
* feat(plugin): add `proxywasm` plugin

The `proxywasm` plugin is a WASM Filter following the ProxyWasm ABI Specification using the proxywasm go sdk

This allows extensibility with any reverse proxy who implements the ProxyWasm ABI Specification.

The current WASM Filter was successfully tested with APISIX, Envoy, Nginx with ngx_wasm_module from Kong and Istio.

Fixes #145
2024-10-01 17:30:14 -07:00

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Istio Plugin

The Istio Plugin is a WASM Plugin written with the Proxy Wasm SDK.

Provider compatibility grid

Provider Dynamic Blocking
Docker ❌ ❌
Docker Swarm ❌ ❌
Kubernetes ✅ ✅

Configuration

You can have the following configuration:

!> This only works for ingress gateways. !> Attaching this filter to a side-car would not work because the side-car itself gets shutdown on scaling to zero.

apiVersion: extensions.istio.io/v1alpha1
kind: WasmPlugin
metadata:
  name: sablier-wasm-whoami-dynamic
  namespace: istio-system
spec:
  selector:
    matchLabels:
      istio: ingressgateway
  url: file:///opt/filters/sablierproxywasm.wasm/..data/sablierproxywasm.wasm
  # Use https://istio.io/latest/docs/reference/config/proxy_extensions/wasm-plugin/#WasmPlugin-TrafficSelector
  # To specify which service to apply this filter only
  phase: UNSPECIFIED_PHASE
  pluginConfig:
    {
      "sablier_url": "sablier.sablier-system.svc.cluster.local",
      "cluster": "outbound|10000||sablier.sablier-system.svc.cluster.local",
      "names": [ "deployment_default_whoami_1" ],
      "session_duration": "1m",
      "dynamic": {
        "display_name": "Dynamic Whoami",
        "theme": "hacker-terminal"
      }
    }