net.kuujo.vertigo.context.impl.InputPortContextImpl Maven / Gradle / Ivy

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/*
 * Copyright 2014 the original author or authors.
 *
 * 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 net.kuujo.vertigo.context.impl;

import io.vertx.core.eventbus.MessageCodec;
import io.vertx.core.json.JsonArray;
import io.vertx.core.json.JsonObject;
import net.kuujo.vertigo.VertigoException;
import net.kuujo.vertigo.context.InputContext;
import net.kuujo.vertigo.context.InputConnectionContext;
import net.kuujo.vertigo.context.InputPortContext;
import net.kuujo.vertigo.context.PortContext;
import net.kuujo.vertigo.instance.InputConnection;
import net.kuujo.vertigo.util.Args;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;

/**
 * Input port context implementation.
 *
 * @author Jordan Halterman
 */
public class InputPortContextImpl extends BaseContextImpl implements InputPortContext {
  private InputContext input;

  protected String name;
  protected Class type;
  protected Class codec;
  //  protected boolean persistent;
  protected Collection connections = new ArrayList<>();

  @Override
  public InputContext input() {
    return input;
  }

  @Override
  public String name() {
    return name;
  }

  @Override
  public Class type() {
    return type;
  }

  @Override
  public Class codec() {
    return codec;
  }

  @Override
  public Collection connections() {
    return connections;
  }

  @Override
  public JsonObject toJson() {
    JsonArray connectionJson = new JsonArray();
    connections.forEach(connection -> connectionJson.add(connection.toJson()));

    JsonObject json = new JsonObject()
        .put("name", name)
        .put("connections", connectionJson);

    if (type != null && type != Object.class) {
      json.put("type", type.toString());
    }

    if (codec != null) {
      json.put("codec", codec.toString());
    }

//    if (persistent) {
//      json.put("persistent", persistent);
//    }

    return json;

  }

  /**
   * Input port context builder.
   */
  public static class Builder implements InputPortContext.Builder {
    private final InputPortContextImpl port;

    public Builder() {
      port = new InputPortContextImpl();
    }

    public Builder(InputPortContextImpl port) {
      this.port = port != null ? port : new InputPortContextImpl();
    }

    public Builder setInput(InputContext input) {
      Args.checkNotNull(input, "input cannot be null");
      port.input = input;
      return this;
    }

    @Override
    public Builder setName(String name) {
      Args.checkNotNull(name, "name cannot be null");
      port.name = name;
      return this;
    }

    @Override
    public Builder setType(Class type) {
      port.type = Args.checkNotNull(type, "type cannot be null");
      return this;
    }

    @Override
    public Builder setCodec(Class codec) {
      port.codec = codec;
      return this;
    }

//    @Override
//    public A setPersistent(boolean persistent) {
//      port.persistent = persistent;
//      return this;
//    }

    @Override
    public InputPortContext.Builder addConnection(InputConnectionContext connection) {
      Args.checkNotNull(connection, "connection cannot be null");
      port.connections.add(connection);
      return this;
    }

    @Override
    public InputPortContext.Builder removeConnection(InputConnectionContext connection) {
      Args.checkNotNull(connection, "connection cannot be null");
      port.connections.remove(connection);
      return this;
    }

    @Override
    public InputPortContext.Builder setConnections(InputConnectionContext... connections) {
      port.connections = new ArrayList<>(Arrays.asList(connections));
      return this;
    }

    @Override
    public InputPortContext.Builder setConnections(Collection connections) {
      Args.checkNotNull(connections, "connections cannot be null");
      port.connections = new ArrayList<>(connections);
      return this;
    }

    @Override
    public InputPortContextImpl build() {
      return port;
    }

    @Override
    public Builder update(JsonObject json) {
      port.name = json.getString("name");
      try {
        String typeName = json.getString("type");
        port.type = typeName != null
            ? Class.forName(json.getString("type"))
            : Object.class;
        String codecName = json.getString("codec");
        port.codec = codecName != null
            ? (Class) Class.forName(codecName)
            : null;
      } catch (ClassNotFoundException e) {
        throw new VertigoException(e.getMessage(), e);
      }
//    persistent = json.getBoolean("persistent");
      json.getJsonArray("connections")
          .forEach(o -> {
            InputConnectionContext connection = InputConnectionContext
                .builder()
                .setPort(port)
                .update((JsonObject)o)
                .build();
            port.connections.add(connection);
          });

      return this;
    }
  }

}