org.nightcode.milter.client.MilterSessionFactoryBuilder Maven / Gradle / Ivy

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Java implementation of the Sendmail Milter protocol.

There is a newer version: 0.8

/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.nightcode.milter.client;

import java.net.SocketAddress;
import java.util.Objects;

import org.nightcode.milter.Actions;
import org.nightcode.milter.ProtocolSteps;

public class MilterSessionFactoryBuilder {

  public static  MilterSessionFactoryBuilder builder() {
    return new MilterSessionFactoryBuilder<>();
  }

  ConnectionFactory factory;
  int                  protocolVersion;
  Actions              actions;
  ProtocolSteps        protocolSteps;

  private int bitMask = 0x00;

  public MilterSessionFactory create() {
    requireValue(0x01, "ConnectionFactory");
    requireValue(0x01 << 1, "ProtocolVersion");
    requireValue(0x01 << 2, "Actions");
    requireValue(0x01 << 3, "ProtocolSteps");
    return new MilterSessionFactoryImpl<>(this);
  }

  public MilterSessionFactoryBuilder actions(Actions val) {
    Objects.requireNonNull(val, "actions");
    bitMask |= (0x01 << 2);
    this.actions = val;
    return this;
  }

  public MilterSessionFactoryBuilder factory(ConnectionFactory val) {
    Objects.requireNonNull(val, "connection factory");
    bitMask |= 0x01;
    factory = val;
    return this;
  }

  public MilterSessionFactoryBuilder protocolSteps(ProtocolSteps val) {
    Objects.requireNonNull(val, "protocol steps");
    bitMask |= (0x01 << 3);
    this.protocolSteps = val;
    return this;
  }

  public MilterSessionFactoryBuilder protocolVersion(int val) {
    bitMask |= (0x01 << 1);
    this.protocolVersion = val;
    return this;
  }

  private void requireValue(int bitField, String object) {
    if ((bitMask & bitField) != bitField) {
      throw new IllegalStateException(object + " should be initialized");
    }
  }
}