Examples with DiagnosisTable com.microsoft.dhalion.core.DiagnosisTable used on opensource projects

Example 1 with DiagnosisTable

use of com.microsoft.dhalion.core.DiagnosisTable in project heron by twitter.

the class ScaleUpResolver method resolve.

@Override
public Collection<Action> resolve(Collection<Diagnosis> diagnosis) {
    List<Action> actions = new ArrayList<>();
    DiagnosisTable table = DiagnosisTable.of(diagnosis);
    table = table.type(DIAGNOSIS_UNDER_PROVISIONING.text());
    if (table.size() == 0) {
        LOG.fine("No under-previsioning diagnosis present, ending as there's nothing to fix");
        return actions;
    }
    // Scale the first assigned component
    Diagnosis diagnoses = table.first();
    // verify diagnoses instance is valid
    if (diagnoses.assignments().isEmpty()) {
        LOG.warning(String.format("Diagnosis %s is missing assignments", diagnoses.id()));
        return actions;
    }
    String component = diagnoses.assignments().iterator().next();
    int newParallelism = computeScaleUpFactor(component);
    Map<String, Integer> changeRequest = new HashMap<>();
    changeRequest.put(component, newParallelism);
    PackingPlan currentPackingPlan = packingPlanProvider.get();
    PackingPlan newPlan = buildNewPackingPlan(changeRequest, currentPackingPlan);
    if (newPlan == null) {
        return null;
    }
    Scheduler.UpdateTopologyRequest updateTopologyRequest = Scheduler.UpdateTopologyRequest.newBuilder().setCurrentPackingPlan(getSerializedPlan(currentPackingPlan)).setProposedPackingPlan(getSerializedPlan(newPlan)).build();
    LOG.info("Sending Updating topology request: " + updateTopologyRequest);
    if (!schedulerClient.updateTopology(updateTopologyRequest)) {
        throw new RuntimeException(String.format("Failed to update topology with Scheduler, " + "updateTopologyRequest=%s", updateTopologyRequest));
    }
    LOG.info("Scheduler updated topology successfully.");
    LOG.info("Broadcasting topology update event");
    TopologyUpdate action = new TopologyUpdate(context.checkpoint(), Collections.singletonList(component));
    eventManager.onEvent(action);
    actions.add(action);
    return actions;
}