/**
* Tries to check if the Network Server is up and running by calling ping If successful, then it
* returns else tries for 50 seconds before giving up and throwing an exception.
*
* @throws Exception when there is a problem with testing if the Network Server is up and running
*/
private static void waitForStart() throws Exception {
// Server instance for testing connection
org.apache.derby.drda.NetworkServerControl server = null;
// Use NetworkServerControl.ping() to wait for
// NetworkServer to come up. We could have used
// NetworkServerControl to start the server but the property is
// easier.
server = new NetworkServerControl();
System.out.println("Testing if Network Server is up and running!");
for (int i = 0; i < 10; i++) {
try {
Thread.currentThread().sleep(5000);
server.ping();
} catch (Exception e) {
System.out.println("Try #" + i + " " + e.toString());
if (i == 9) {
System.out.println("Giving up trying to connect to Network Server!");
throw e;
}
}
}
System.out.println("Derby Network Server now running");
}
private static void waitForStart(String portString, int timeToWait) throws Exception {
int waitTime = 0;
int port = Integer.parseInt(portString);
NetworkServerControl derbyServer =
new NetworkServerControl(InetAddress.getByName("localhost"), port);
while (waitTime < timeToWait) {
try {
derbyServer.ping();
return;
} catch (Exception e) {
Thread currentThread = Thread.currentThread();
synchronized (currentThread) {
try {
currentThread.wait(1000);
waitTime += 1000;
if (waitTime >= timeToWait) {
System.out.println("Giving up on wait, waited: " + waitTime);
throw e;
}
} catch (InterruptedException ie) {
}
}
}
}
}
public boolean isStarted() {
try {
networkServerControl.ping();
return true;
} catch (Exception e) {
return false;
}
}