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package io.split.engine;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
/**
* Created by adilaijaz on 4/27/16.
*/
public class SDKReadinessGates {
private static final Logger _log = LoggerFactory.getLogger(SDKReadinessGates.class);
private final CountDownLatch _internalReady = new CountDownLatch(1);
/**
* Returns true if the SDK is ready. The SDK is ready when:
*
* - It has fetched Feature flag definitions the first time.
* - It has downloaded segment memberships for segments in use in the initial Feature flag definitions
*
*
* This operation will block until the SDK is ready or 'milliseconds' have passed. If the milliseconds
* are less than or equal to zero, the operation will not block and return immediately
*
* @param milliseconds time to wait for an answer. if the value is zero or negative, we will not
* block for an answer.
* @return true if the sdk is ready, false otherwise.
* @throws InterruptedException if this operation was interrupted.
*/
public boolean waitUntilInternalReady(long milliseconds) throws InterruptedException {
return _internalReady.await(milliseconds, TimeUnit.MILLISECONDS);
}
public boolean isSDKReady() {
return _internalReady.getCount() == 0;
}
public void sdkInternalReady() {
_internalReady.countDown();
}
}