// Copyright 2022 Lightbend Inc.

syntax = "proto3";

package kalix;

option go_package = "github.com/lightbend/kalix-go-sdk/kalix;kalix";
option java_multiple_files = true;
option java_outer_classname = "JsonSchemaProto";
option java_package = "kalix";

// Additional metadata for views accepting JSON events in, as query request parameters and as responses from queries
message JsonSchema {
  // Indicates the field in a incoming message that is expected to contain the json payload
  // The field should be of type google.protobuf.Any and messages must have type_url 'json.kalix.io'
  // and the value encoded accordingly (WIRETYPE_LENGTH_DELIMITED + UTF8 bytes)
  string json_body_input_field = 1;
  // Indicates the proto message describing the schema of the json_body_input_field payload, incoming message JSON
  // will be parsed using this schema, only by queries to allow mixing parameters in a generated input type with
  // fields from a JSON payload (updates are always expected to have Any as their input parameter and does not use this)
  string input = 2;
  // Indicates a proto message type describing the schema of the output json payload, used for view update methods
  // to specify the schema used extract index values from the stored view entries and also the schema for the
  // returned type from a query (either the same as the view message type or a custom projected message type)
  string output = 3;
}