package org.hive2hive.core.processes.implementations.share;
import java.security.PublicKey;
import org.hive2hive.core.exceptions.GetFailedException;
import org.hive2hive.core.network.data.PublicKeyManager;
import org.hive2hive.core.processes.framework.abstracts.ProcessStep;
import org.hive2hive.core.processes.framework.exceptions.InvalidProcessStateException;
import org.hive2hive.core.processes.framework.exceptions.ProcessExecutionException;
/**
* A step which loads the public key of the friend. No result is a sign for a non-existing friend.
*
* @author Nico, Seppi
*/
public class VerifyFriendIdStep extends ProcessStep {
private final PublicKeyManager keyManager;
private final String friendId;
public VerifyFriendIdStep(PublicKeyManager keyManager, String friendId) {
this.keyManager = keyManager;
this.friendId = friendId;
}
@Override
protected void doExecute() throws InvalidProcessStateException, ProcessExecutionException {
try {
// just get the public key. It does not produce any overhead since this call is cached or (if the
// first time), the result will be cached, making the notification faster.
PublicKey publicKey = keyManager.getPublicKey(friendId);
if (publicKey == null)
throw new GetFailedException(String.format("The friend '%s' does not seem to exist.",
friendId));
} catch (GetFailedException e) {
throw new ProcessExecutionException(String.format(
"The friend '%s' does not seem to exist. reason = '%s'", friendId, e.getMessage()));
}
}
}