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// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
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//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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package com.cloud.kubernetes.cluster.actionworkers;

import java.util.List;

import org.apache.log4j.Level;

import com.cloud.exception.ConcurrentOperationException;
import com.cloud.kubernetes.cluster.KubernetesCluster;
import com.cloud.kubernetes.cluster.KubernetesClusterManagerImpl;
import com.cloud.uservm.UserVm;
import com.cloud.utils.exception.CloudRuntimeException;
import com.cloud.vm.VirtualMachine;

public class KubernetesClusterStopWorker extends KubernetesClusterActionWorker {
    public KubernetesClusterStopWorker(final KubernetesCluster kubernetesCluster, final KubernetesClusterManagerImpl clusterManager) {
        super(kubernetesCluster, clusterManager);
    }

    public boolean stop() throws CloudRuntimeException {
        init();
        if (LOGGER.isInfoEnabled()) {
            LOGGER.info(String.format("Stopping Kubernetes cluster : %s", kubernetesCluster.getName()));
        }
        stateTransitTo(kubernetesCluster.getId(), KubernetesCluster.Event.StopRequested);
        List<UserVm> clusterVMs = getKubernetesClusterVMs();
        for (UserVm vm : clusterVMs) {
            if (vm == null) {
                logTransitStateAndThrow(Level.ERROR, String.format("Failed to find all VMs in Kubernetes cluster : %s", kubernetesCluster.getName()), kubernetesCluster.getId(), KubernetesCluster.Event.OperationFailed);
            }
            try {
                userVmService.stopVirtualMachine(vm.getId(), false);
            } catch (ConcurrentOperationException ex) {
                LOGGER.warn(String.format("Failed to stop VM : %s in Kubernetes cluster : %s",
                    vm.getDisplayName(), kubernetesCluster.getName()), ex);
            }
        }
        for (final UserVm userVm : clusterVMs) {
            UserVm vm = userVmDao.findById(userVm.getId());
            if (vm == null || !vm.getState().equals(VirtualMachine.State.Stopped)) {
                logTransitStateAndThrow(Level.ERROR, String.format("Failed to stop all VMs in Kubernetes cluster : %s",
                    kubernetesCluster.getName()), kubernetesCluster.getId(), KubernetesCluster.Event.OperationFailed);
            }
        }
        stateTransitTo(kubernetesCluster.getId(), KubernetesCluster.Event.OperationSucceeded);
        return true;
    }
}