WasmPlugin add VmConfig

extensions/v1alpha1/wasm.proto

@@ -14,6 +14,7 @@
 
 syntax = "proto3";
 
+import "google/protobuf/any.proto";
 import "google/protobuf/wrappers.proto";
 import "google/protobuf/struct.proto";
 import "type/v1beta1/selector.proto";
@@ -241,6 +242,9 @@ message WasmPlugin {
   // value, the ordering will be deterministically derived from name and
   // namespace of the `WasmPlugins`. Defaults to `0`.
   google.protobuf.Int64Value priority = 10;
+
+  // Configuration for finding or starting VM.
+  VmConfig vm_config = 11;
 }
 
 // The phase in the filter chain where the plugin will be injected.
@@ -280,3 +284,22 @@ enum PullPolicy {
   // this plugin.
   Always = 2;
 }
+
+// Configuration for a Wasm VM.
+message VmConfig {
+  // Specifies environment variables to be injected to this VM which will be available through
+  // WASI's ``environ_get`` and ``environ_get_sizes`` system calls. Note that these functions are mostly implicitly
+  // called in your language's standard library, so you do not need to call them directly and you can access to env
+  // vars just like when you do on native platforms.
+  // Warning: Envoy rejects the configuration if there's conflict of key space.
+  EnvironmentVariables environment_variables = 4;
+}
+
+message EnvironmentVariables {
+  // The keys of *Envoy's* environment variables exposed to this VM. In other words, if a key exists in Envoy's environment
+  // variables, then that key-value pair will be injected. Note that if a key does not exist, it will be ignored.
+  repeated string host_env_keys = 1;
+
+  // Explicitly given key-value pairs to be injected to this VM in the form of "KEY=VALUE".
+  map<string, string> key_values = 2;
+}