Examples with EstablishedClusterView org.apache.sling.discovery.impl.common.resource.EstablishedClusterView used on opensource projects

Example 1 with EstablishedClusterView

use of org.apache.sling.discovery.impl.common.resource.EstablishedClusterView in project sling by apache.

the class ClusterViewServiceImpl method getLocalClusterView.

@Override
public LocalClusterView getLocalClusterView() throws UndefinedClusterViewException {
    if (resourceResolverFactory == null) {
        logger.warn("getClusterView: no resourceResolverFactory set at the moment.");
        throw new UndefinedClusterViewException(Reason.REPOSITORY_EXCEPTION, "no resourceResolverFactory set");
    }
    ResourceResolver resourceResolver = null;
    try {
        resourceResolver = resourceResolverFactory.getServiceResourceResolver(null);
        View view = ViewHelper.getEstablishedView(resourceResolver, config);
        if (view == null) {
            logger.debug("getClusterView: no view established at the moment. isolated mode");
            throw new UndefinedClusterViewException(Reason.NO_ESTABLISHED_VIEW, "no established view at the moment");
        }
        if (failedEstablishedViewId != null && failedEstablishedViewId.equals(view.getResource().getName())) {
            // SLING-5195 : the heartbeat-handler-self-check has declared the currently
            // established view as invalid - hence we should now treat this as
            // undefined clusterview
            logger.debug("getClusterView: current establishedView is marked as invalid: " + failedEstablishedViewId);
            throw new UndefinedClusterViewException(Reason.NO_ESTABLISHED_VIEW, "current established view was marked as invalid");
        }
        EstablishedClusterView clusterViewImpl = new EstablishedClusterView(config, view, getSlingId());
        InstanceDescription local = clusterViewImpl.getLocalInstance();
        if (local != null) {
            return clusterViewImpl;
        } else {
            logger.info("getClusterView: the local instance (" + getSlingId() + ") is currently not included in the existing established view! " + "This is normal at startup. At other times is pseudo-network-partitioning is an indicator for repository/network-delays or clocks-out-of-sync (SLING-3432). " + "(increasing the heartbeatTimeout can help as a workaround too) " + "The local instance will stay in TOPOLOGY_CHANGING or pre _INIT mode until a new vote was successful.");
            throw new UndefinedClusterViewException(Reason.ISOLATED_FROM_TOPOLOGY, "established view does not include local instance - isolated");
        }
    } catch (UndefinedClusterViewException e) {
        // pass through
        throw e;
    } catch (LoginException e) {
        logger.error("handleEvent: could not log in administratively: " + e, e);
        throw new UndefinedClusterViewException(Reason.REPOSITORY_EXCEPTION, "could not log in administratively: " + e);
    } catch (Exception e) {
        logger.error("handleEvent: got an exception: " + e, e);
        throw new UndefinedClusterViewException(Reason.REPOSITORY_EXCEPTION, "could not log in administratively: " + e);
    } finally {
        if (resourceResolver != null) {
            resourceResolver.close();
        }
    }
}