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package com.keuin.kbackupfabric.operation.abstracts;
public abstract class AbstractAsyncOperation extends AbstractSerializedOperation {
private final Thread thread;
private final String name;
private final Object sync = new Object();
protected AbstractAsyncOperation(String name) {
this.name = name;
this.thread = new Thread(this::async, name);
}
/**
* Start the worker thread.
*
* @return true if succeed starting, false if already started.
*/
@Override
protected final boolean operate() {
synchronized (sync) {
if (thread.isAlive())
return false;
if (!sync())
return false;
thread.start();
return true;
}
}
/**
* Implement your async operation here.
* When this method returns, the operation must finish.
*/
protected abstract void async();
/**
* If necessary, implement your sync operations here.
* It will be invoked before starting the async thread.
*/
protected boolean sync() {
return true;
}
public final String getName() {
return name;
}
@Override
public String toString() {
return "operation " + name;
}
}
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