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package com.sun.grizzly.threadpool;

import java.util.concurrent.TimeUnit;
import com.sun.grizzly.Context;
import com.sun.grizzly.attributes.AttributeBuilder;
import com.sun.grizzly.attributes.AttributeHolder;
import com.sun.grizzly.attributes.IndexedAttributeHolder;
import com.sun.grizzly.memory.DefaultMemoryManager.BufferInfo;

/**
 * Default Grizzly worker thread implementation
 * 
 * @author Alexey Stashok
 */
public class DefaultWorkerThread extends Thread implements WorkerThread {

    private final AttributeBuilder attrBuilder;
    private final AttributeHolder attributes;

    private BufferInfo associatedBuffer;
    private Context cachedContext;

    private long transactionTimeoutMillis =
            WorkerThread.UNLIMITED_TRANSACTION_TIMEOUT;

    private long transactionStartedTimeMillis;

    public DefaultWorkerThread(AttributeBuilder attrBuilder, String name,
            Runnable runTask) {
        super(runTask, name);
        this.attrBuilder = attrBuilder;
        attributes = createAttributeHolder();
    }

    public Thread getThread() {
        return this;
    }

    public AttributeHolder getAttributes() {
        return attributes;
    }

    public AttributeHolder obtainAttributes() {
        return attributes;
    }

    public BufferInfo getAssociatedBuffer() {
        return associatedBuffer;
    }

    public void setAssociatedBuffer(BufferInfo associatedBuffer) {
        this.associatedBuffer = associatedBuffer;
    }

    public Context getCachedContext() {
        return cachedContext;
    }

    public void setCachedContext(Context cachedContext) {
        this.cachedContext = cachedContext;
    }

    public long getTransactionTimeout(TimeUnit timeunit) {
        return timeunit.convert(transactionTimeoutMillis, TimeUnit.MILLISECONDS);
    }

    public void setTransactionTimeout(long timeout, TimeUnit timeunit) {
        this.transactionTimeoutMillis =
                TimeUnit.MILLISECONDS.convert(timeout, timeunit);
    }

    public long getTransactionStartedTime(TimeUnit timeunit) {
        return timeunit.convert(transactionTimeoutMillis, TimeUnit.MILLISECONDS);
    }

    protected void onBeforeRun() {
        transactionStartedTimeMillis = System.currentTimeMillis();
    }
    
    protected void onAfterRun() {
        transactionStartedTimeMillis = 0;
    }
    
    protected AttributeHolder createAttributeHolder() {
        return new IndexedAttributeHolder(attrBuilder);
    }
}