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syntax = "proto3";

package envoy.extensions.wasm.v3;

import "envoy/config/core/v3/base.proto";

import "google/protobuf/any.proto";

import "udpa/annotations/versioning.proto";

import "validate/validate.proto";

option java_package = "io.envoyproxy.envoy.extensions.wasm.v3";
option java_outer_classname = "WasmProto";
option java_multiple_files = true;

// [#protodoc-title: Wasm service]

// Configuration for a Wasm VM.
// [#next-free-field: 6]
// [#not-implemented-hide:] pending implementation.
message VmConfig {
  option (udpa.annotations.versioning).previous_message_type = "envoy.config.wasm.v2alpha.VmConfig";

  // An ID which will be used along with a hash of the wasm code (or the name of the registered Null
  // VM plugin) to determine which VM will be used for the plugin. All plugins which use the same
  // *vm_id* and code will use the same VM. May be left blank. Sharing a VM between plugins can
  // reduce memory utilization and make sharing of data easier which may have security implications.
  // See ref: "TODO: add ref" for details.
  string vm_id = 1;

  // The Wasm runtime type (either "v8" or "null" for code compiled into Envoy).
  string runtime = 2 [(validate.rules).string = {min_bytes: 1}];

  // The Wasm code that Envoy will execute.
  config.core.v3.AsyncDataSource code = 3;

  // The Wasm configuration used in initialization of a new VM (proxy_on_start).
  google.protobuf.Any configuration = 4;

  // Allow the wasm file to include pre-compiled code on VMs which support it.
  // Warning: this should only be enable for trusted sources as the precompiled code is not
  // verified.
  bool allow_precompiled = 5;
}

// Base Configuration for Wasm Plugins e.g. filters and services.
// [#next-free-field: 6]
// [#not-implemented-hide:] pending implementation.
message PluginConfig {
  option (udpa.annotations.versioning).previous_message_type =
      "envoy.config.wasm.v2alpha.PluginConfig";

  // A unique name for a filters/services in a VM for use in identifying the filter/service if
  // multiple filters/services are handled by the same *vm_id* and *group_name* and for
  // logging/debugging.
  string name = 1;

  // A unique ID for a set of filters/services in a VM which will share a RootContext and Contexts
  // if applicable (e.g. an Wasm HttpFilter and an Wasm AccessLog). If left blank, all
  // filters/services with a blank group_name with the same *vm_id* will share Context(s).
  string group_name = 2;

  // Configuration for finding or starting VM.
  oneof vm_config {
    VmConfig inline_vm_config = 3;
    // In the future add referential VM configurations.
  }

  // Filter/service configuration used to configure or reconfigure a plugin
  // (proxy_on_configuration).
  google.protobuf.Any configuration = 5;
}

// WasmService is configured as a built-in *envoy.wasm_service* :ref:`ServiceConfig
// `. This opaque configuration will be used to
// create a Wasm Service.
// [#not-implemented-hide:] pending implementation.
message WasmService {
  option (udpa.annotations.versioning).previous_message_type =
      "envoy.config.wasm.v2alpha.WasmService";

  // General plugin configuration.
  PluginConfig config = 1;

  // If true, create a single VM rather than creating one VM per worker. Such a singleton can
  // not be used with filters.
  bool singleton = 2;
}