generator.proto

syntax = "proto3";

package grpc.federation.generator.plugin;

import "google/protobuf/duration.proto";
import "google/rpc/code.proto";

option go_package = "github.com/mercari/grpc-federation/grpc/federation/generator/plugin;plugin";

enum ActionType {
  GENERATE_ACTION = 0;
  KEEP_ACTION = 1;
  CREATE_ACTION = 2;
  DELETE_ACTION = 3;
  UPDATE_ACTION = 4;
}

message ProtoCodeGeneratorResponse {
  message GeneratedCodeInfo {
    repeated Annotation annotation = 1;
    message Annotation {
      repeated int32 path = 1 [packed = true];
      optional string source_file = 2;
      optional int32 begin = 3;
      optional int32 end = 4;
      enum Semantic {
        NONE = 0;
        SET = 1;
        ALIAS = 2;
      }
      optional Semantic semantic = 5;
    }
  }
  optional string error = 1;
  optional uint64 supported_features = 2;
  enum Feature {
    FEATURE_NONE = 0;
    FEATURE_PROTO3_OPTIONAL = 1;
    FEATURE_SUPPORTS_EDITIONS = 2;
  }
  optional int32 minimum_edition = 3;
  optional int32 maximum_edition = 4;

  message File {
    optional string name = 1;
    optional string insertion_point = 2;
    optional string content = 15;
    optional GeneratedCodeInfo generated_code_info = 16;
  }
  repeated File file = 15;
}

// CodeGeneratorRequest.
message CodeGeneratorRequest {
  ActionType type = 1;
  string proto_path = 2;
  string out_dir = 3;
  repeated ProtoCodeGeneratorResponse.File files = 4;
  repeated string grpc_federation_file_ids = 5;
  Reference reference = 6;
}

message Reference {
  map<string, File> file_map = 1;
  map<string, Service> service_map = 2;
  map<string, Method> method_map = 3;
  map<string, Message> message_map = 4;
  map<string, Field> field_map = 5;
  map<string, Enum> enum_map = 6;
  map<string, EnumValue> enum_value_map = 7;
  map<string, Oneof> oneof_map = 8;
  map<string, CELPlugin> cel_plugin_map = 9;
  map<string, MessageDependencyGraph> graph_map = 10;
  map<string, VariableDefinition> variable_definition_map = 11;
  map<string, VariableDefinitionGroup> variable_definition_group_map = 12;
}

message File {
  string id = 1;
  Package package = 2;
  GoPackage go_package = 3;
  string name = 4;
  repeated string service_ids = 5;
  repeated string message_ids = 6;
  repeated string enum_ids = 7;
  repeated string cel_plugin_ids = 8;
  repeated string import_file_ids = 9;
}

message Package {
  string name = 1;
  repeated string file_ids = 2;
}

message GoPackage {
  string name = 1;
  string import_path = 2;
  string alias_name = 3;
}

message Service {
  string id = 1;
  string name = 2;
  repeated string method_ids = 3;
  string file_id = 4;
  repeated string message_ids = 5;
  repeated string message_arg_ids = 6;
  repeated string cel_plugin_ids = 7;
  ServiceRule rule = 8;
}

message ServiceRule {}

message Method {
  string id = 1;
  string name = 2;
  string request_id = 3;
  string response_id = 4;
  string service_id = 5;
  MethodRule rule = 6;
}

message MethodRule {
  google.protobuf.Duration timeout = 1;
  string response_id = 2;
}

message Message {
  string id = 1;
  string name = 2;
  bool is_map_entry = 3;
  string file_id = 4;
  string parent_message_id = 5;
  repeated string nested_message_ids = 6;
  repeated string enum_ids = 7;
  repeated string field_ids = 8;
  repeated string oneof_ids = 9;
  MessageRule rule = 10;
}

message MessageRule {
  string message_argument_id = 1;
  bool custom_resolver = 2;
  repeated string alias_ids = 3;
  VariableDefinitionSet def_set = 4;
}

message VariableDefinitionSet {
  repeated string variable_definition_ids = 1;
  repeated string variable_definition_group_ids = 2;
  string dependency_graph_id = 3;
}

message VariableDefinition {
  string id = 1;
  int64 index = 2;
  string name = 3;
  CELValue if = 4;
  bool auto_bind = 5;
  bool used = 6;
  VariableExpr expr = 7;
}

message Field {
  string id = 1;
  string name = 2;
  Type type = 3;
  string oneof_id = 4;
  FieldRule rule = 5;
  string message_id = 6;
}

message FieldRule {
  Value value = 1;
  bool custom_resolver = 2;
  bool message_custom_resolver = 3;
  repeated string alias_ids = 4;
  AutoBindField auto_bind_field = 5;
  FieldOneofRule oneof_rule = 6;
}

message AutoBindField {
  string variable_definition_id = 1;
  string field_id = 2;
}

message FieldOneofRule {
  CELValue if = 1;
  bool default = 2;
  CELValue by = 3;
  VariableDefinitionSet def_set = 4;
}

message VariableDefinitionGroup {
  string id = 1;
  oneof group {
    SequentialVariableDefinitionGroup sequential = 2;
    ConcurrentVariableDefinitionGroup concurrent = 3;
  }
}

message SequentialVariableDefinitionGroup {
  string start = 1;
  string end = 2;
}

message ConcurrentVariableDefinitionGroup {
  repeated string starts = 1;
  string end = 2;
}

message MessageDependencyGraph {
  string id = 1;
  repeated MessageDependencyGraphNode roots = 2;
}

message MessageDependencyGraphNode {
  repeated MessageDependencyGraphNode children = 1;
  string base_message_id = 2;
  string variable_definition_id = 3;
}

message VariableExpr {
  Type type = 1;
  oneof expr {
    CELValue by = 2;
    MapExpr map = 3;
    CallExpr call = 4;
    MessageExpr message = 5;
    ValidationExpr validation = 6;
  }
}

enum TypeKind {
  UNKNOWN_TYPE = 0;
  DOUBLE_TYPE = 1;
  FLOAT_TYPE = 2;
  INT64_TYPE = 3;
  UINT64_TYPE = 4;
  INT32_TYPE = 5;
  FIXED64_TYPE = 6;
  FIXED32_TYPE = 7;
  BOOL_TYPE = 8;
  STRING_TYPE = 9;
  GROUP_TYPE = 10;
  MESSAGE_TYPE = 11;
  BYTES_TYPE = 12;
  UINT32_TYPE = 13;
  ENUM_TYPE = 14;
  SFIXED32_TYPE = 15;
  SFIXED64_TYPE = 16;
  SINT32_TYPE = 17;
  SINT64_TYPE = 18;
}

message Type {
  TypeKind kind = 1;
  bool repeated = 2;
  bool is_null = 3;
  oneof ref {
    string message_id = 4;
    string enum_id = 5;
    string oneof_field_id = 6;
  }
}

message CELValue {
  string expr = 1;
  Type out = 2;
}

message MapExpr {
  Iterator iterator = 1;
  MapIteratorExpr expr = 2;
}

message Iterator {
  string name = 1;
  string source_id = 2;
}

message MapIteratorExpr {
  Type type = 1;
  oneof expr {
    CELValue by = 2;
    MessageExpr message = 3;
  }
}

message CallExpr {
  string method_id = 1;
  Request request = 2;
  google.protobuf.Duration timeout = 3;
  RetryPolicy retry = 4;
  repeated GRPCError errors = 5;
}

message RetryPolicy {
  oneof policy {
    RetryPolicyConstant constant = 1;
    RetryPolicyExponential exponential = 2;
  }
  CELValue if = 3;
}

message RetryPolicyConstant {
  google.protobuf.Duration interval = 1;
  uint64 max_retries = 2;
}

message RetryPolicyExponential {
  google.protobuf.Duration initial_interval = 1;
  double randomization_factor = 2;
  double multiplier = 3;
  google.protobuf.Duration max_interval = 4;
  uint64 max_retries = 5;
  google.protobuf.Duration max_elapsed_time = 6;
}

message Request {
  repeated Argument args = 1;
  string type_id = 2;
}

message MessageExpr {
  string message_id = 1;
  repeated Argument args = 2;
}

message Argument {
  string name = 1;
  Type type = 2;
  Value value = 3;
  CELValue if = 4;
}

message Value {
  bool inline = 1;
  CELValue cel = 2;
}

message ValidationExpr {
  string name = 1;
  GRPCError error = 2;
}

message GRPCError {
  VariableDefinitionSet def_set = 1;
  CELValue if = 2;
  google.rpc.Code code = 3;
  CELValue message = 4;
  repeated GRPCErrorDetail details = 5;
  bool ignore = 6;
  CELValue ignore_and_response = 7;
}

message GRPCErrorDetail {
  VariableDefinitionSet def_set = 1;
  CELValue if = 2;
  VariableDefinitionSet messages = 3;
  repeated PreconditionFailure precondition_failures = 4;
  repeated BadRequest bad_requests = 5;
  repeated LocalizedMessage localized_messages = 6;
  repeated CELValue by = 7;
}

message PreconditionFailure {
  repeated PreconditionFailureViolation violations = 1;
}

message PreconditionFailureViolation {
  CELValue type = 1;
  CELValue subject = 2;
  CELValue description = 3;
}

message BadRequest {
  repeated BadRequestFieldViolation field_violations = 1;
}

message BadRequestFieldViolation {
  CELValue field = 1;
  CELValue description = 2;
}

message LocalizedMessage {
  string locale = 1;
  CELValue message = 2;
}

message Oneof {
  string id = 1;
  string name = 2;
  string message_id = 3;
  repeated string field_ids = 4;
}

message Enum {
  string id = 1;
  string name = 2;
  repeated string value_ids = 3;
  string message_id = 4;
  string file_id = 5;
  EnumRule rule = 6;
}

message EnumValue {
  string id = 1;
  string value = 2;
  string enum_id = 3;
  EnumValueRule rule = 4;
}

message EnumRule {
  repeated string alias_ids = 1;
}

message EnumValueRule {
  bool default = 1;
  repeated EnumValueAlias aliases = 2;
}

message EnumValueAlias {
  string enum_alias_id = 1;
  repeated string alias_ids = 2;
}

message CELPlugin {
  string id = 1;
  string name = 2;
  string description = 3;
  repeated CELFunction functions = 4;
}

message CELFunction {
  string name = 1;
  string id = 2;
  repeated Type args = 3;
  Type return = 4;
  string receiver_id = 5;
}