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workaround for #597 (#863)

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Fixes: #597

Signed-off-by: Markus Rathgeb <maggu2810@gmail.com>
This commit is contained in:
Markus Rathgeb 2019-06-10 11:28:09 +02:00 committed by Wouter Born
parent 3b74ea1dad
commit 5977002c5f
1 changed files with 28 additions and 0 deletions
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28
bundles/org.openhab.core.io.rest.sse/src/main/java/org/eclipse/smarthome/io/rest/sse/internal/SseActivator.java
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@ -12,6 +12,8 @@
*/ */
package org.eclipse.smarthome.io.rest.sse.internal; package org.eclipse.smarthome.io.rest.sse.internal;
import javax.ws.rs.ext.RuntimeDelegate;
import org.glassfish.jersey.media.sse.SseFeature; import org.glassfish.jersey.media.sse.SseFeature;
import org.osgi.framework.BundleActivator; import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext; import org.osgi.framework.BundleContext;
@ -27,6 +29,31 @@ import org.slf4j.LoggerFactory;
*/ */
public class SseActivator implements BundleActivator { public class SseActivator implements BundleActivator {
// See: https://github.com/openhab/openhab-core/issues/597
private static class WorkAroundIssue597 {
public static RuntimeDelegate getRuntimeDelegate(final long millisMax, final long millisSleep)
throws InterruptedException {
final Logger logger = LoggerFactory.getLogger(WorkAroundIssue597.class);
logger.trace("get runtime delegate");
final long begMillis = System.currentTimeMillis();
do {
try {
final RuntimeDelegate runtimeDelegate = RuntimeDelegate.getInstance();
logger.trace("succeeded");
return runtimeDelegate;
} catch (final LinkageError ex) {
logger.trace("linkage error");
if (System.currentTimeMillis() - begMillis <= millisMax) {
Thread.sleep(millisSleep);
}
}
} while (System.currentTimeMillis() - begMillis <= millisMax);
logger.trace("give up");
return null;
}
}
private final Logger logger = LoggerFactory.getLogger(SseActivator.class); private final Logger logger = LoggerFactory.getLogger(SseActivator.class);
private static BundleContext context; private static BundleContext context;
@ -42,6 +69,7 @@ public class SseActivator implements BundleActivator {
public void start(BundleContext bc) throws Exception { public void start(BundleContext bc) throws Exception {
context = bc; context = bc;
WorkAroundIssue597.getRuntimeDelegate(5000, 200);
String featureName = SseFeature.class.getName(); String featureName = SseFeature.class.getName();
if (bc.getServiceReference(featureName) == null) { if (bc.getServiceReference(featureName) == null) {
sseFeatureRegistration = bc.registerService(featureName, new SseFeature(), null); sseFeatureRegistration = bc.registerService(featureName, new SseFeature(), null);