How to use

BrokerRole

in

org.apache.rocketmq.store.config

public void setBrokerRole(String brokerRole) {
  this.brokerRole = BrokerRole.valueOf(brokerRole);
}

public boolean onRoleChangePre(Properties properties) {
  BrokerRole newRole = BrokerRole.valueOf(properties.get(ConfigName.BROKER_ROLE).toString());
  if (messageStoreConfig.getBrokerRole().equals(newRole)) {
    log.warn("new role is equal to current, role:{}", messageStoreConfig.getBrokerRole());
    return false;
  }
  if (newRole.equals(BrokerRole.ASYNC_MASTER) || newRole.equals(BrokerRole.SYNC_MASTER)) {
    if (!checkNoMaster()) {
      log.error("still another master, do not init as a master");
      return false;
    }
  }
  roleChangeState = RoleChangeState.CHANGING;//will not register new role before changing completely
  log.info("role status checking pass");
  return true;
}

  private boolean isBuildIndex() {
    if (DefaultMessageStore.this.messageStoreConfig.isMessageIndexEnable()) {
      if (DefaultMessageStore.this.messageStoreConfig.isMessageIndexOnlySlaveEnable()) {
        return BrokerRole.SLAVE.equals(DefaultMessageStore.this.messageStoreConfig.getBrokerRole());
      } else {
        return true;
      }
    }
    return false;
  }
}

public void setBrokerRole(String brokerRole) {
  this.brokerRole = BrokerRole.valueOf(brokerRole);
}

public boolean change2Master(String brokerName, String brokerAddr, boolean isGuaranteed) {
  BrokerRole role = BrokerRole.valueOf(namesrvController.getNamesrvConfig().getMasterType());
  return changeRoleAndId(brokerName, brokerAddr, MixAll.MASTER_ID, role, isGuaranteed);
}

public void setBrokerRole(String brokerRole) {
  this.brokerRole = BrokerRole.valueOf(brokerRole);
}