com.alachisoft.ncache.client.internal.command.SubscribeTopicCommand Maven / Gradle / Ivy

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package com.alachisoft.ncache.client.internal.command;

import Alachisoft.NCache.Common.Enum.SubscriptionType;
import com.alachisoft.ncache.common.protobuf.CommandProtocol;
import com.alachisoft.ncache.common.protobuf.SubscribeTopicCommandProtocol;
import com.alachisoft.ncache.runtime.caching.SubscriptionPolicyType;
import com.alachisoft.ncache.runtime.exceptions.CommandException;

import java.io.ByteArrayOutputStream;
import java.io.IOException;

public class SubscribeTopicCommand extends Command {

    private final String topicName;
    private final SubscriptionType pubsubtype;
    private final String subscriptionName;
    private final SubscriptionPolicyType subscriptionPolicyType;
    private final long creationTime;
    private final long expirationTime;
    protected com.alachisoft.ncache.common.protobuf.SubscribeTopicCommandProtocol.SubscribeTopicCommand _commandInstance;

    public SubscribeTopicCommand(String topicName, String subscriptionName, SubscriptionType pubsubType, long creationTime, long expiration, SubscriptionPolicyType subscriptionPolicyType) {
        name = "SubscribeTopicCommand";
        this.topicName = topicName;
        this.subscriptionName=subscriptionName;
        this.pubsubtype = pubsubType;
        this.subscriptionPolicyType =subscriptionPolicyType;
        this.creationTime=creationTime;
        this.expirationTime=expiration;
    }

    @Override
    public CommandType getCommandType() {
        return CommandType.SUBCRIBE;
    }

    @Override
    public RequestType getCommandRequestType() {
        return RequestType.AtomicRead;
    }

    @Override
    protected void createCommand() throws CommandException {
        SubscribeTopicCommandProtocol.SubscribeTopicCommand.Builder builder = SubscribeTopicCommandProtocol.SubscribeTopicCommand.newBuilder();

        builder.setRequestId(getRequestId())
                .setTopicName(topicName)
                .setPubSubType(pubsubtype.getValue())
                .setExpirationTime(expirationTime)
                .setSubscriptionName(subscriptionName)
                .setSubscriptionPolicy(subscriptionPolicyType.getValue())
                .setCreationTime(creationTime);

        CommandProtocol.Command.Builder commandBuilder = CommandProtocol.Command.newBuilder();
        if(this.getIntendedRecipient() != null){
            builder.setIntendedRecipient(this.getIntendedRecipient());
        }

        _commandInstance =builder
                .setClientLastViewId(getClientLastViewId())
                .setVersion(VERSION)
                .build();
    }

    @Override
    protected  void serializeCommandInternal(ByteArrayOutputStream stream) throws IOException
    {
        _commandInstance.writeTo(stream);
    }
    @Override
    protected short getCommandHandle()
    {
        return (short)CommandProtocol.Command.Type.SUBSCRIBE_TOPIC.getNumber();
    }
}