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Efficient, scalable, and flexible Java implementation of the Short Messaging Peer to Peer Protocol (SMPP)
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package com.cloudhopper.smpp.impl;

/*
 * #%L
 * ch-smpp
 * %%
 * Copyright (C) 2009 - 2015 Cloudhopper by Twitter
 * %%
 * 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.
 * #L%
 */

import com.cloudhopper.commons.util.HexUtil;
import com.cloudhopper.commons.util.windowing.WindowFuture;
import com.cloudhopper.smpp.PduAsyncResponse;
import com.cloudhopper.smpp.pdu.PduRequest;
import com.cloudhopper.smpp.pdu.PduResponse;

/**
 * Default implementation of an SmppAsyncResponse.
 * 
 * @author joelauer (twitter: @jjlauer or http://twitter.com/jjlauer)
 */
public class DefaultPduAsyncResponse implements PduAsyncResponse {
    // we internally "wrap" a PDU window future
    private final WindowFuture future;

    public DefaultPduAsyncResponse(WindowFuture future) {
        this.future = future;
    }

    @Override
    public PduRequest getRequest() {
        return future.getRequest();
    }

    @Override
    public PduResponse getResponse() {
        return future.getResponse();
    }
    
    @Override
    public int getWindowSize() {
        return future.getWindowSize();
    }
    
    @Override
    public long getWindowWaitTime() {
        return future.getOfferToAcceptTime();
    }

    @Override
    public long getResponseTime() {
        return future.getAcceptToDoneTime();
    }
    
    @Override
    public long getEstimatedProcessingTime() {
        long responseTime = getResponseTime();
        if (responseTime == 0 || future.getWindowSize() == 0) {
            return 0;
        }
        return (responseTime / future.getWindowSize());
    }

    @Override
    public String toString() {
        StringBuilder buf = new StringBuilder(100);
        buf.append("smpp_async_resp: seqNum [0x");
        buf.append(HexUtil.toHexString(this.future.getKey()));
        buf.append("] windowSize [");
        buf.append(getWindowSize());
        buf.append("] windowWaitTime [");
        buf.append(getWindowWaitTime());
        buf.append(" ms] responseTime [");
        buf.append(getResponseTime());
        buf.append(" ms] estProcessingTime [");
        buf.append(getEstimatedProcessingTime());
        buf.append(" ms] reqType [");
        buf.append(getRequest().getName());
        buf.append("] respType [");
        buf.append(getResponse().getName());
        buf.append("]");
        return buf.toString();
    }
    
}