syntax = "proto3";

package archive_control.v1;

import "google/protobuf/timestamp.proto";

// ProtocolVersion is negotiated during connection registration. A different
// major version is incompatible; minor versions are feature-negotiated.
message ProtocolVersion {
  uint32 major = 1;
  uint32 minor = 2;
}

enum ClientRole {
  CLIENT_ROLE_UNSPECIFIED = 0;
  CLIENT_ROLE_ARCHIVE = 1;
  CLIENT_ROLE_CACHE = 2;
}

enum HealthState {
  HEALTH_STATE_UNSPECIFIED = 0;
  HEALTH_STATE_HEALTHY = 1;
  HEALTH_STATE_DEGRADED = 2;
  HEALTH_STATE_UNHEALTHY = 3;
  HEALTH_STATE_UNKNOWN = 4;
}

enum ErrorCode {
  ERROR_CODE_UNSPECIFIED = 0;
  ERROR_CODE_INVALID_ARGUMENT = 1;
  ERROR_CODE_UNAUTHENTICATED = 2;
  ERROR_CODE_PROTOCOL_VERSION_MISMATCH = 3;
  ERROR_CODE_CLIENT_ID_CONFLICT = 4;
  ERROR_CODE_NOT_FOUND = 5;
  ERROR_CODE_CONFLICT = 6;
  ERROR_CODE_STALE_STATE = 7;
  ERROR_CODE_UNSUPPORTED = 8;
  ERROR_CODE_PRECONDITION_FAILED = 9;
  ERROR_CODE_RESOURCE_EXHAUSTED = 10;
  ERROR_CODE_UNAVAILABLE = 11;
  ERROR_CODE_TIMEOUT = 12;
  ERROR_CODE_CANCELLED = 13;
  ERROR_CODE_INTEGRITY_CHECK_FAILED = 14;
  ERROR_CODE_PATH_CONFLICT = 15;
  ERROR_CODE_PERMISSION_DENIED = 16;
  ERROR_CODE_MANUAL_INTERVENTION_REQUIRED = 17;
  ERROR_CODE_INTERNAL = 18;
}

message Error {
  ErrorCode code = 1;
  string message = 2;
  bool retryable = 3;
  map<string, string> details = 4;
}

message ServiceHealth {
  string service = 1;
  HealthState state = 2;
  string version = 3;
  string api_version = 4;
  string detail = 5;
  google.protobuf.Timestamp checked_at = 6;
}

message ClientIdentity {
  string client_id = 1;
  string display_name = 2;
  ClientRole role = 3;
}

message PageRequest {
  uint32 page_size = 1;
  string page_token = 2;
}