syntax = "proto3";

package envoy.extensions.common.tap.v4alpha;

import "envoy/config/core/v4alpha/config_source.proto";
import "envoy/config/tap/v4alpha/common.proto";

import "udpa/core/v1/resource_locator.proto";

import "udpa/annotations/status.proto";
import "udpa/annotations/versioning.proto";
import "validate/validate.proto";

option java_package = "io.envoyproxy.envoy.extensions.common.tap.v4alpha";
option java_outer_classname = "CommonProto";
option java_multiple_files = true;
option (udpa.annotations.file_status).package_version_status = NEXT_MAJOR_VERSION_CANDIDATE;

// [#protodoc-title: Common tap extension configuration]

// Common configuration for all tap extensions.
message CommonExtensionConfig {
  option (udpa.annotations.versioning).previous_message_type =
      "envoy.extensions.common.tap.v3.CommonExtensionConfig";

  // [#not-implemented-hide:]
  message TapDSConfig {
    option (udpa.annotations.versioning).previous_message_type =
        "envoy.extensions.common.tap.v3.CommonExtensionConfig.TapDSConfig";

    // Configuration for the source of TapDS updates for this Cluster.
    config.core.v4alpha.ConfigSource config_source = 1
        [(validate.rules).message = {required: true}];

    oneof name_specifier {
      // Tap config to request from XDS server.
      string name = 2;

      // Resource locator for TAP. This is mutually exclusive to *name*.
      // [#not-implemented-hide:]
      udpa.core.v1.ResourceLocator tap_resource_locator = 3;
    }
  }

  oneof config_type {
    option (validate.required) = true;

    // If specified, the tap filter will be configured via an admin handler.
    AdminConfig admin_config = 1;

    // If specified, the tap filter will be configured via a static configuration that cannot be
    // changed.
    config.tap.v4alpha.TapConfig static_config = 2;

    // [#not-implemented-hide:] Configuration to use for TapDS updates for the filter.
    TapDSConfig tapds_config = 3;
  }
}

// Configuration for the admin handler. See :ref:`here <config_http_filters_tap_admin_handler>` for
// more information.
message AdminConfig {
  option (udpa.annotations.versioning).previous_message_type =
      "envoy.extensions.common.tap.v3.AdminConfig";

  // Opaque configuration ID. When requests are made to the admin handler, the passed opaque ID is
  // matched to the configured filter opaque ID to determine which filter to configure.
  string config_id = 1 [(validate.rules).string = {min_len: 1}];
}