/**
 * # Schedule Service
 * gRPC service definitions for the Schedule Service.
 *
 * ### Keywords
 * The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
 * "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
 * document are to be interpreted as described in
 * [RFC2119](https://www.ietf.org/rfc/rfc2119) and clarified in
 * [RFC8174](https://www.ietf.org/rfc/rfc8174).
 */
syntax = "proto3";

package proto;

// SPDX-License-Identifier: Apache-2.0
option java_package = "com.hederahashgraph.service.proto.java";
// <<<pbj.java_package = "com.hedera.hapi.node.scheduled">>> This comment is special code for setting PBJ Compiler java package

import "services_query.proto";
import "services_response.proto";
import "services_transaction_response.proto";
import "services_transaction.proto";

/**
 * Transactions and queries for the Schedule Service.<br/>
 * The Schedule Service enables transactions to be submitted without all
 * required signatures and offers a `scheduleSign` transaction to provide
 * additional signatures independently after the schedule is created. The
 * scheduled transaction may be executed immediately when all required
 * signatures are present, or at expiration if "long term" schedules
 * are enabled in network configuration.
 *
 * ### Execution
 * Scheduled transactions SHALL be executed under the following conditions.
 * 1. If "long term" schedules are enabled and `wait_for_expiry` is set for
 *    that schedule then the transaction SHALL NOT be executed before the
 *    network consensus time matches or exceeds the `expiration_time` field
 *    for that schedule.
 * 1. If "long term" schedules are enabled and `wait_for_expiry` is _not_ set
 *    for that schedule, then the transaction SHALL be executed when all
 *    signatures required by the scheduled transaction are active for that
 *    schedule. This MAY be immediately after the `scheduleCreate` or a
 *    subsequent `scheduleSign` transaction, or MAY be at expiration if
 *    the signature requirements are met at that time.
 * 1. If "long term" schedules are _disabled_, then the scheduled transaction
 *    SHALL be executed immediately after all signature requirements for the
 *    scheduled transaction are met during the `scheduleCreate` or a subsequent
 *    `scheduleSign` transaction. The scheduled transaction SHALL NOT be
 *    on expiration when "long term" schedules are disabled.
 *
 * A schedule SHALL remain in state and MAY be queried with a `getScheduleInfo`
 * transaction after execution, until the schedule expires.<br/>
 * When network consensus time matches or exceeds the `expiration_time` for
 * a schedule, that schedule SHALL be removed from state, whether it has
 * executed or not.<br/>
 * If "long term" schedules are _disabled_, the maximum expiration time SHALL
 * be the consensus time of the `scheduleCreate` transaction extended by
 * the network configuration value `ledger.scheduleTxExpiryTimeSecs`.
 *
 * ### Block Stream Effects
 * When a scheduled transaction is executed, the timestamp in the transaction
 * identifier for that transaction SHALL be 1 nanosecond after the consensus
 * timestamp for the transaction that resulted in its execution. If execution
 * occurred at expiration, that transaction may be almost any transaction,
 * including another scheduled transaction that executed at expiration.<br/>
 * The transaction identifier for a scheduled transaction that is executed
 * SHALL have the `scheduled` flag set and SHALL inherit the `accountID` and
 * `transactionValidStart` values from the `scheduleCreate` that created the
 * schedule.<br/>
 * The `scheduleRef` property of the record for a scheduled transaction SHALL
 * be populated with the schedule identifier of the schedule that executed.
 */
service ScheduleService {
  /**
   * Create a new Schedule.
   * <p>
   * If all signature requirements are met with this transaction, the
   * scheduled transaction MAY execute immediately.
   */
  rpc createSchedule (Transaction) returns (TransactionResponse);

  /**
   * Add signatures to an existing schedule.
   * <p>
   * Signatures on this transaction SHALL be added to the set of active
   * signatures on the schedule, and MAY result in execution of the
   * scheduled transaction if all signature requirements are met.
   */
  rpc signSchedule (Transaction) returns (TransactionResponse);

  /**
   * Mark an existing schedule deleted.
   * <p>
   * Once deleted a schedule SHALL NOT be executed and any subsequent
   * `scheduleSign` transaction SHALL fail.
   */
  rpc deleteSchedule (Transaction) returns (TransactionResponse);

  /**
   * Retrieve the metadata for a schedule.
   */
  rpc getScheduleInfo (Query) returns (Response);
}