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// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

package com.cloud.kubernetes.cluster.actionworkers;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Objects;
import java.util.Set;
import java.util.stream.Collectors;

import javax.inject.Inject;

import org.apache.cloudstack.api.ApiConstants;
import org.apache.cloudstack.ca.CAManager;
import org.apache.cloudstack.config.ApiServiceConfiguration;
import org.apache.cloudstack.engine.orchestration.service.NetworkOrchestrationService;
import org.apache.cloudstack.framework.config.dao.ConfigurationDao;
import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.log4j.Level;
import org.apache.log4j.Logger;

import com.cloud.dc.DataCenterVO;
import com.cloud.dc.dao.DataCenterDao;
import com.cloud.dc.dao.VlanDao;
import com.cloud.exception.InsufficientAddressCapacityException;
import com.cloud.exception.ResourceAllocationException;
import com.cloud.exception.ResourceUnavailableException;
import com.cloud.hypervisor.Hypervisor;
import com.cloud.kubernetes.cluster.KubernetesCluster;
import com.cloud.kubernetes.cluster.KubernetesClusterDetailsVO;
import com.cloud.kubernetes.cluster.KubernetesClusterManagerImpl;
import com.cloud.kubernetes.cluster.KubernetesClusterVO;
import com.cloud.kubernetes.cluster.KubernetesClusterVmMapVO;
import com.cloud.kubernetes.cluster.dao.KubernetesClusterDao;
import com.cloud.kubernetes.cluster.dao.KubernetesClusterDetailsDao;
import com.cloud.kubernetes.cluster.dao.KubernetesClusterVmMapDao;
import com.cloud.kubernetes.version.KubernetesSupportedVersion;
import com.cloud.kubernetes.version.dao.KubernetesSupportedVersionDao;
import com.cloud.network.IpAddress;
import com.cloud.network.IpAddressManager;
import com.cloud.network.Network;
import com.cloud.network.Network.GuestType;
import com.cloud.network.NetworkModel;
import com.cloud.network.NetworkService;
import com.cloud.network.dao.IPAddressDao;
import com.cloud.network.dao.NetworkDao;
import com.cloud.network.vpc.VpcService;
import com.cloud.projects.ProjectService;
import com.cloud.service.dao.ServiceOfferingDao;
import com.cloud.storage.Storage;
import com.cloud.storage.VMTemplateVO;
import com.cloud.storage.dao.LaunchPermissionDao;
import com.cloud.storage.dao.VMTemplateDao;
import com.cloud.template.TemplateApiService;
import com.cloud.template.VirtualMachineTemplate;
import com.cloud.user.Account;
import com.cloud.user.dao.AccountDao;
import com.cloud.user.dao.SSHKeyPairDao;
import com.cloud.uservm.UserVm;
import com.cloud.utils.Pair;
import com.cloud.utils.db.Transaction;
import com.cloud.utils.db.TransactionCallback;
import com.cloud.utils.db.TransactionStatus;
import com.cloud.utils.exception.CloudRuntimeException;
import com.cloud.utils.fsm.NoTransitionException;
import com.cloud.utils.fsm.StateMachine2;
import com.cloud.utils.ssh.SshHelper;
import com.cloud.vm.UserVmDetailVO;
import com.cloud.vm.UserVmService;
import com.cloud.vm.UserVmVO;
import com.cloud.vm.VirtualMachineManager;
import com.cloud.vm.VmDetailConstants;
import com.cloud.vm.dao.UserVmDao;
import com.cloud.vm.dao.UserVmDetailsDao;


public class KubernetesClusterActionWorker {

    public static final String CLUSTER_NODE_VM_USER = "cloud";
    public static final int CLUSTER_API_PORT = 6443;
    public static final int DEFAULT_SSH_PORT = 22;
    public static final int CLUSTER_NODES_DEFAULT_START_SSH_PORT = 2222;
    public static final int CLUSTER_NODES_DEFAULT_SSH_PORT_SG = DEFAULT_SSH_PORT;

    public static final String CKS_CLUSTER_SECURITY_GROUP_NAME = "CKSSecurityGroup";
    public static final String CKS_SECURITY_GROUP_DESCRIPTION = "Security group for CKS nodes";

    protected static final Logger LOGGER = Logger.getLogger(KubernetesClusterActionWorker.class);

    protected StateMachine2<KubernetesCluster.State, KubernetesCluster.Event, KubernetesCluster> _stateMachine = KubernetesCluster.State.getStateMachine();

    @Inject
    protected CAManager caManager;
    @Inject
    protected ConfigurationDao configurationDao;
    @Inject
    protected DataCenterDao dataCenterDao;
    @Inject
    protected AccountDao accountDao;
    @Inject
    protected IpAddressManager ipAddressManager;
    @Inject
    protected IPAddressDao ipAddressDao;
    @Inject
    protected NetworkOrchestrationService networkMgr;
    @Inject
    protected NetworkDao networkDao;
    @Inject
    protected NetworkModel networkModel;
    @Inject
    protected NetworkService networkService;
    @Inject
    protected ServiceOfferingDao serviceOfferingDao;
    @Inject
    protected SSHKeyPairDao sshKeyPairDao;
    @Inject
    protected VMTemplateDao templateDao;
    @Inject
    protected TemplateApiService templateService;
    @Inject
    protected UserVmDao userVmDao;
    @Inject
    protected UserVmDetailsDao userVmDetailsDao;
    @Inject
    protected UserVmService userVmService;
    @Inject
    protected VlanDao vlanDao;
    @Inject
    protected VirtualMachineManager itMgr;
    @Inject
    protected LaunchPermissionDao launchPermissionDao;
    @Inject
    public ProjectService projectService;
    @Inject
    public VpcService vpcService;

    protected KubernetesClusterDao kubernetesClusterDao;
    protected KubernetesClusterVmMapDao kubernetesClusterVmMapDao;
    protected KubernetesClusterDetailsDao kubernetesClusterDetailsDao;
    protected KubernetesSupportedVersionDao kubernetesSupportedVersionDao;

    protected KubernetesCluster kubernetesCluster;
    protected Account owner;
    protected VirtualMachineTemplate clusterTemplate;
    protected File sshKeyFile;
    protected String publicIpAddress;
    protected int sshPort;


    protected final String deploySecretsScriptFilename = "deploy-cloudstack-secret";
    protected final String deployProviderScriptFilename = "deploy-provider";
    protected final String autoscaleScriptFilename = "autoscale-kube-cluster";
    protected final String scriptPath = "/opt/bin/";
    protected File deploySecretsScriptFile;
    protected File deployProviderScriptFile;
    protected File autoscaleScriptFile;
    protected KubernetesClusterManagerImpl manager;
    protected String[] keys;

    protected KubernetesClusterActionWorker(final KubernetesCluster kubernetesCluster, final KubernetesClusterManagerImpl clusterManager) {
        this.kubernetesCluster = kubernetesCluster;
        this.kubernetesClusterDao = clusterManager.kubernetesClusterDao;
        this.kubernetesClusterDetailsDao = clusterManager.kubernetesClusterDetailsDao;
        this.kubernetesClusterVmMapDao = clusterManager.kubernetesClusterVmMapDao;
        this.kubernetesSupportedVersionDao = clusterManager.kubernetesSupportedVersionDao;
        this.manager = clusterManager;
    }

    protected void init() {
        this.owner = accountDao.findById(kubernetesCluster.getAccountId());
        long zoneId = this.kubernetesCluster.getZoneId();
        long templateId = this.kubernetesCluster.getTemplateId();
        DataCenterVO dataCenterVO = dataCenterDao.findById(zoneId);
        VMTemplateVO template = templateDao.findById(templateId);
        Hypervisor.HypervisorType type = template.getHypervisorType();
        this.clusterTemplate = manager.getKubernetesServiceTemplate(dataCenterVO, type);
        this.sshKeyFile = getManagementServerSshPublicKeyFile();
    }

    protected String readResourceFile(String resource) throws IOException {
        return IOUtils.toString(Objects.requireNonNull(Thread.currentThread().getContextClassLoader().getResourceAsStream(resource)), com.cloud.utils.StringUtils.getPreferredCharset());
    }

    protected String getControlNodeLoginUser() {
        List<KubernetesClusterVmMapVO> vmMapVOList = getKubernetesClusterVMMaps();
        if (vmMapVOList.size() > 0) {
            long vmId = vmMapVOList.get(0).getVmId();
            UserVmVO userVM = userVmDao.findById(vmId);
            if (userVM == null) {
                throw new CloudRuntimeException("Failed to find login user, Unable to log in to node to fetch details");
            }
            Set<String> vm = new HashSet<>();
            vm.add(userVM.getName());
            UserVmDetailVO vmDetail = userVmDetailsDao.findDetail(vmId, VmDetailConstants.CKS_CONTROL_NODE_LOGIN_USER);
            if (vmDetail != null && !org.apache.commons.lang3.StringUtils.isEmpty(vmDetail.getValue())) {
                return vmDetail.getValue();
            } else {
                return CLUSTER_NODE_VM_USER;
            }
        } else {
            return CLUSTER_NODE_VM_USER;
        }
    }

    protected void logMessage(final Level logLevel, final String message, final Exception e) {
        if (logLevel == Level.INFO) {
            if (LOGGER.isInfoEnabled()) {
                if (e != null) {
                    LOGGER.info(message, e);
                } else {
                    LOGGER.info(message);
                }
            }
        } else if (logLevel == Level.DEBUG) {
            if (LOGGER.isDebugEnabled()) {
                if (e != null) {
                    LOGGER.debug(message, e);
                } else {
                    LOGGER.debug(message);
                }
            }
        } else if (logLevel == Level.WARN) {
            if (e != null) {
                LOGGER.warn(message, e);
            } else {
                LOGGER.warn(message);
            }
        } else {
            if (e != null) {
                LOGGER.error(message, e);
            } else {
                LOGGER.error(message);
            }
        }
    }

    protected void logTransitStateDetachIsoAndThrow(final Level logLevel, final String message, final KubernetesCluster kubernetesCluster,
        final List<UserVm> clusterVMs, final KubernetesCluster.Event event, final Exception e) throws CloudRuntimeException {
        logMessage(logLevel, message, e);
        stateTransitTo(kubernetesCluster.getId(), event);
        detachIsoKubernetesVMs(clusterVMs);
        if (e == null) {
            throw new CloudRuntimeException(message);
        }
        throw new CloudRuntimeException(message, e);
    }

    protected void deleteTemplateLaunchPermission() {
        if (clusterTemplate != null && owner != null) {
            LOGGER.info("Revoking launch permission for systemVM template");
            launchPermissionDao.removePermissions(clusterTemplate.getId(), Collections.singletonList(owner.getId()));
        }
    }

    protected void logTransitStateAndThrow(final Level logLevel, final String message, final Long kubernetesClusterId, final KubernetesCluster.Event event, final Exception e) throws CloudRuntimeException {
        logMessage(logLevel, message, e);
        if (kubernetesClusterId != null && event != null) {
            stateTransitTo(kubernetesClusterId, event);
        }
        deleteTemplateLaunchPermission();
        if (e == null) {
            throw new CloudRuntimeException(message);
        }
        throw new CloudRuntimeException(message, e);
    }

    protected void logTransitStateAndThrow(final Level logLevel, final String message, final Long kubernetesClusterId, final KubernetesCluster.Event event) throws CloudRuntimeException {
        logTransitStateAndThrow(logLevel, message, kubernetesClusterId, event, null);
    }

    protected void logAndThrow(final Level logLevel, final String message) throws CloudRuntimeException {
        logTransitStateAndThrow(logLevel, message, null, null, null);
    }

    protected void logAndThrow(final Level logLevel, final String message, final Exception ex) throws CloudRuntimeException {
        logTransitStateAndThrow(logLevel, message, null, null, ex);
    }

    protected File getManagementServerSshPublicKeyFile() {
        boolean devel = Boolean.parseBoolean(configurationDao.getValue("developer"));
        String keyFile = String.format("%s/.ssh/id_rsa", System.getProperty("user.home"));
        if (devel) {
            keyFile += ".cloud";
        }
        return new File(keyFile);
    }

    protected KubernetesClusterVmMapVO addKubernetesClusterVm(final long kubernetesClusterId, final long vmId, boolean isControlNode) {
        return Transaction.execute(new TransactionCallback<KubernetesClusterVmMapVO>() {
            @Override
            public KubernetesClusterVmMapVO doInTransaction(TransactionStatus status) {
                KubernetesClusterVmMapVO newClusterVmMap = new KubernetesClusterVmMapVO(kubernetesClusterId, vmId, isControlNode);
                kubernetesClusterVmMapDao.persist(newClusterVmMap);
                return newClusterVmMap;
            }
        });
    }

    private UserVm fetchControlVmIfMissing(final UserVm controlVm) {
        if (controlVm != null) {
            return controlVm;
        }
        List<KubernetesClusterVmMapVO> clusterVMs = kubernetesClusterVmMapDao.listByClusterId(kubernetesCluster.getId());
        if (CollectionUtils.isEmpty(clusterVMs)) {
            LOGGER.warn(String.format("Unable to retrieve VMs for Kubernetes cluster : %s", kubernetesCluster.getName()));
            return null;
        }
        List<Long> vmIds = new ArrayList<>();
        for (KubernetesClusterVmMapVO vmMap : clusterVMs) {
            vmIds.add(vmMap.getVmId());
        }
        Collections.sort(vmIds);
        return userVmDao.findById(vmIds.get(0));
    }

    protected String getControlVmPrivateIp() {
        String ip = null;
        UserVm vm = fetchControlVmIfMissing(null);
        if (vm != null) {
            ip = vm.getPrivateIpAddress();
        }
        return ip;
    }

    protected IpAddress getNetworkSourceNatIp(Network network) {
        List<? extends IpAddress> addresses = networkModel.listPublicIpsAssignedToGuestNtwk(network.getId(), true);
        if (CollectionUtils.isNotEmpty(addresses)) {
            return addresses.get(0);
        }
        LOGGER.warn(String.format("No public IP addresses found for network : %s, Kubernetes cluster : %s", network.getName(), kubernetesCluster.getName()));
        return null;
    }

    protected IpAddress getVpcTierKubernetesPublicIp(Network network) {
        KubernetesClusterDetailsVO detailsVO = kubernetesClusterDetailsDao.findDetail(kubernetesCluster.getId(), ApiConstants.PUBLIC_IP_ID);
        if (detailsVO == null || StringUtils.isEmpty(detailsVO.getValue())) {
            return null;
        }
        IpAddress address = ipAddressDao.findByUuid(detailsVO.getValue());
        if (address == null || network.getVpcId() != address.getVpcId()) {
            LOGGER.warn(String.format("Public IP with ID: %s linked to the Kubernetes cluster: %s is not usable", detailsVO.getValue(), kubernetesCluster.getName()));
            return null;
        }
        return address;
    }

    protected IpAddress acquireVpcTierKubernetesPublicIp(Network network) throws
            InsufficientAddressCapacityException, ResourceAllocationException, ResourceUnavailableException {
        IpAddress ip = networkService.allocateIP(owner, kubernetesCluster.getZoneId(), network.getId(), null, null);
        if (ip == null) {
            return null;
        }
        ip = vpcService.associateIPToVpc(ip.getId(), network.getVpcId());
        ip = ipAddressManager.associateIPToGuestNetwork(ip.getId(), network.getId(), false);
        kubernetesClusterDetailsDao.addDetail(kubernetesCluster.getId(), ApiConstants.PUBLIC_IP_ID, ip.getUuid(), false);
        return ip;
    }

    protected Pair<String, Integer> getKubernetesClusterServerIpSshPortForIsolatedNetwork(Network network) {
        String ip = null;
        IpAddress address = getNetworkSourceNatIp(network);
        if (address != null) {
            ip = address.getAddress().addr();
        }
        return new Pair<>(ip, CLUSTER_NODES_DEFAULT_START_SSH_PORT);
    }

    protected Pair<String, Integer> getKubernetesClusterServerIpSshPortForSharedNetwork(UserVm controlVm) {
        int port = DEFAULT_SSH_PORT;
        controlVm = fetchControlVmIfMissing(controlVm);
        if (controlVm == null) {
            LOGGER.warn(String.format("Unable to retrieve control VM for Kubernetes cluster : %s", kubernetesCluster.getName()));
            return new Pair<>(null, port);
        }
        return new Pair<>(controlVm.getPrivateIpAddress(), port);
    }

    protected Pair<String, Integer> getKubernetesClusterServerIpSshPortForVpcTier(Network network,
                                                                                  boolean acquireNewPublicIpForVpcTierIfNeeded) throws
            InsufficientAddressCapacityException, ResourceAllocationException, ResourceUnavailableException {
        int port = CLUSTER_NODES_DEFAULT_START_SSH_PORT;
        IpAddress address = getVpcTierKubernetesPublicIp(network);
        if (address != null) {
            return new Pair<>(address.getAddress().addr(), port);
        }
        if (acquireNewPublicIpForVpcTierIfNeeded) {
            address = acquireVpcTierKubernetesPublicIp(network);
            if (address != null) {
                return new Pair<>(address.getAddress().addr(), port);
            }
        }
        LOGGER.warn(String.format("No public IP found for the the VPC tier: %s, Kubernetes cluster : %s", network, kubernetesCluster.getName()));
        return new Pair<>(null, port);
    }

    protected Pair<String, Integer> getKubernetesClusterServerIpSshPort(UserVm controlVm, boolean acquireNewPublicIpForVpcTierIfNeeded) throws
            InsufficientAddressCapacityException, ResourceAllocationException, ResourceUnavailableException {
        int port = CLUSTER_NODES_DEFAULT_START_SSH_PORT;
        KubernetesClusterDetailsVO detail = kubernetesClusterDetailsDao.findDetail(kubernetesCluster.getId(), ApiConstants.EXTERNAL_LOAD_BALANCER_IP_ADDRESS);
        if (detail != null && StringUtils.isNotEmpty(detail.getValue())) {
            return new Pair<>(detail.getValue(), port);
        }
        Network network = networkDao.findById(kubernetesCluster.getNetworkId());
        if (network == null) {
            LOGGER.warn(String.format("Network for Kubernetes cluster : %s cannot be found", kubernetesCluster.getName()));
            return new Pair<>(null, port);
        }
        if (network.getVpcId() != null) {
            return getKubernetesClusterServerIpSshPortForVpcTier(network, acquireNewPublicIpForVpcTierIfNeeded);
        }
        if (Network.GuestType.Isolated.equals(network.getGuestType())) {
            return getKubernetesClusterServerIpSshPortForIsolatedNetwork(network);
        } else if (Network.GuestType.Shared.equals(network.getGuestType())) {
            return getKubernetesClusterServerIpSshPortForSharedNetwork(controlVm);
        }
        LOGGER.warn(String.format("Unable to retrieve server IP address for Kubernetes cluster : %s", kubernetesCluster.getName()));
        return  new Pair<>(null, port);
    }

    protected Pair<String, Integer> getKubernetesClusterServerIpSshPort(UserVm controlVm) {
        try {
            return getKubernetesClusterServerIpSshPort(controlVm, false);
        } catch (InsufficientAddressCapacityException | ResourceAllocationException | ResourceUnavailableException e) {
            LOGGER.debug("This exception should not have occurred", e);
        }
        return new Pair<>(null, CLUSTER_NODES_DEFAULT_START_SSH_PORT);
    }

    protected void attachIsoKubernetesVMs(List<UserVm> clusterVMs, final KubernetesSupportedVersion kubernetesSupportedVersion) throws CloudRuntimeException {
        KubernetesSupportedVersion version = kubernetesSupportedVersion;
        if (kubernetesSupportedVersion == null) {
            version = kubernetesSupportedVersionDao.findById(kubernetesCluster.getKubernetesVersionId());
        }
        KubernetesCluster.Event failedEvent = KubernetesCluster.Event.OperationFailed;
        KubernetesCluster cluster = kubernetesClusterDao.findById(kubernetesCluster.getId());
        if (cluster != null && cluster.getState() == KubernetesCluster.State.Starting) {
            failedEvent = KubernetesCluster.Event.CreateFailed;
        }
        if (version == null) {
            logTransitStateAndThrow(Level.ERROR, String .format("Unable to find Kubernetes version for cluster : %s", kubernetesCluster.getName()), kubernetesCluster.getId(), failedEvent);
        }
        VMTemplateVO iso = templateDao.findById(version.getIsoId());
        if (iso == null) {
            logTransitStateAndThrow(Level.ERROR, String.format("Unable to attach ISO to Kubernetes cluster : %s. Binaries ISO not found.",  kubernetesCluster.getName()), kubernetesCluster.getId(), failedEvent);
        }
        if (!iso.getFormat().equals(Storage.ImageFormat.ISO)) {
            logTransitStateAndThrow(Level.ERROR, String.format("Unable to attach ISO to Kubernetes cluster : %s. Invalid Binaries ISO.",  kubernetesCluster.getName()), kubernetesCluster.getId(), failedEvent);
        }
        if (!iso.getState().equals(VirtualMachineTemplate.State.Active)) {
            logTransitStateAndThrow(Level.ERROR, String.format("Unable to attach ISO to Kubernetes cluster : %s. Binaries ISO not active.",  kubernetesCluster.getName()), kubernetesCluster.getId(), failedEvent);
        }

        for (UserVm vm : clusterVMs) {
            try {
                templateService.attachIso(iso.getId(), vm.getId(), true);
                if (LOGGER.isInfoEnabled()) {
                    LOGGER.info(String.format("Attached binaries ISO for VM : %s in cluster: %s", vm.getDisplayName(), kubernetesCluster.getName()));
                }
            } catch (CloudRuntimeException ex) {
                logTransitStateAndThrow(Level.ERROR, String.format("Failed to attach binaries ISO for VM : %s in the Kubernetes cluster name: %s", vm.getDisplayName(), kubernetesCluster.getName()), kubernetesCluster.getId(), failedEvent, ex);
            }
        }
    }

    protected void attachIsoKubernetesVMs(List<UserVm> clusterVMs) throws CloudRuntimeException {
        attachIsoKubernetesVMs(clusterVMs, null);
    }

    protected void detachIsoKubernetesVMs(List<UserVm> clusterVMs) {
        for (UserVm vm : clusterVMs) {
            boolean result = false;
            try {
                result = templateService.detachIso(vm.getId(), true);
            } catch (CloudRuntimeException ex) {
                LOGGER.warn(String.format("Failed to detach binaries ISO from VM : %s in the Kubernetes cluster : %s ", vm.getDisplayName(), kubernetesCluster.getName()), ex);
            }
            if (result) {
                if (LOGGER.isInfoEnabled()) {
                    LOGGER.info(String.format("Detached Kubernetes binaries from VM : %s in the Kubernetes cluster : %s", vm.getDisplayName(), kubernetesCluster.getName()));
                }
                continue;
            }
            LOGGER.warn(String.format("Failed to detach binaries ISO from VM : %s in the Kubernetes cluster : %s ", vm.getDisplayName(), kubernetesCluster.getName()));
        }
    }

    protected List<KubernetesClusterVmMapVO> getKubernetesClusterVMMaps() {
        List<KubernetesClusterVmMapVO> clusterVMs = kubernetesClusterVmMapDao.listByClusterId(kubernetesCluster.getId());
        return clusterVMs;
    }

    protected List<KubernetesClusterVmMapVO> getKubernetesClusterVMMapsForNodes(List<Long> nodeIds) {
        return kubernetesClusterVmMapDao.listByClusterIdAndVmIdsIn(kubernetesCluster.getId(), nodeIds);
    }

    protected List<UserVm> getKubernetesClusterVMs() {
        List<UserVm> vmList = new ArrayList<>();
        List<KubernetesClusterVmMapVO> clusterVMs = getKubernetesClusterVMMaps();
        if (!CollectionUtils.isEmpty(clusterVMs)) {
            for (KubernetesClusterVmMapVO vmMap : clusterVMs) {
                vmList.add(userVmDao.findById(vmMap.getVmId()));
            }
        }
        return vmList;
    }

    protected void updateLoginUserDetails(List<Long> clusterVMs) {
        if (clusterVMs == null) {
            clusterVMs = getKubernetesClusterVMMaps().stream().map(KubernetesClusterVmMapVO::getVmId).collect(Collectors.toList());
        }
        if (!CollectionUtils.isEmpty(clusterVMs)) {
            for (Long vmId : clusterVMs) {
                UserVm controlNode = userVmDao.findById(vmId);
                if (controlNode != null) {
                    userVmDetailsDao.addDetail(vmId, VmDetailConstants.CKS_CONTROL_NODE_LOGIN_USER, CLUSTER_NODE_VM_USER, true);
                }
            }
        }
    }

    protected boolean stateTransitTo(long kubernetesClusterId, KubernetesCluster.Event e) {
        KubernetesClusterVO kubernetesCluster = kubernetesClusterDao.findById(kubernetesClusterId);
        try {
            return _stateMachine.transitTo(kubernetesCluster, e, null, kubernetesClusterDao);
        } catch (NoTransitionException nte) {
            LOGGER.warn(String.format("Failed to transition state of the Kubernetes cluster : %s in state %s on event %s",
                kubernetesCluster.getName(), kubernetesCluster.getState().toString(), e.toString()), nte);
            return false;
        }
    }

    protected boolean createCloudStackSecret(String[] keys) {
        File pkFile = getManagementServerSshPublicKeyFile();
        Pair<String, Integer> publicIpSshPort = getKubernetesClusterServerIpSshPort(null);
        publicIpAddress = publicIpSshPort.first();
        sshPort = publicIpSshPort.second();

        try {
            String command = String.format("sudo %s/%s -u '%s' -k '%s' -s '%s'",
                scriptPath, deploySecretsScriptFilename, ApiServiceConfiguration.ApiServletPath.value(), keys[0], keys[1]);
            Account account = accountDao.findById(kubernetesCluster.getAccountId());
            if (account != null && account.getType() == Account.Type.PROJECT) {
                String projectId = projectService.findByProjectAccountId(account.getId()).getUuid();
                command = String.format("%s -p '%s'", command, projectId);
            }
            Pair<Boolean, String> result = SshHelper.sshExecute(publicIpAddress, sshPort, getControlNodeLoginUser(),
                pkFile, null, command, 10000, 10000, 60000);
            return result.first();
        } catch (Exception e) {
            String msg = String.format("Failed to add cloudstack-secret to Kubernetes cluster: %s", kubernetesCluster.getName());
            LOGGER.warn(msg, e);
        }
        return false;
    }

    protected File retrieveScriptFile(String filename) {
        File file = null;
        try {
            String data = readResourceFile("/script/" + filename);
            file = File.createTempFile(filename, ".sh");
            BufferedWriter writer = new BufferedWriter(new FileWriter(file));
            writer.write(data);
            writer.close();
        } catch (IOException e) {
            logAndThrow(Level.ERROR, String.format("Kubernetes Cluster %s : Failed to to fetch script %s",
                kubernetesCluster.getName(), filename), e);
        }
        return file;
    }

    protected void retrieveScriptFiles() {
        deploySecretsScriptFile = retrieveScriptFile(deploySecretsScriptFilename);
        deployProviderScriptFile = retrieveScriptFile(deployProviderScriptFilename);
        autoscaleScriptFile = retrieveScriptFile(autoscaleScriptFilename);
    }

    protected void copyScripts(String nodeAddress, final int sshPort) {
        copyScriptFile(nodeAddress, sshPort, deploySecretsScriptFile, deploySecretsScriptFilename);
        copyScriptFile(nodeAddress, sshPort, deployProviderScriptFile, deployProviderScriptFilename);
        copyScriptFile(nodeAddress, sshPort, autoscaleScriptFile, autoscaleScriptFilename);
    }

    protected void copyScriptFile(String nodeAddress, final int sshPort, File file, String desitnation) {
        try {
            SshHelper.scpTo(nodeAddress, sshPort, getControlNodeLoginUser(), sshKeyFile, null,
                "~/", file.getAbsolutePath(), "0755");
            String cmdStr = String.format("sudo mv ~/%s %s/%s", file.getName(), scriptPath, desitnation);
            SshHelper.sshExecute(publicIpAddress, sshPort, getControlNodeLoginUser(), sshKeyFile, null,
                cmdStr, 10000, 10000, 10 * 60 * 1000);
        } catch (Exception e) {
            throw new CloudRuntimeException(e);
        }
    }

    protected boolean taintControlNodes() {
        StringBuilder commands = new StringBuilder();
        List<KubernetesClusterVmMapVO> vmMapVOList = getKubernetesClusterVMMaps();
        for(KubernetesClusterVmMapVO vmMap :vmMapVOList) {
            if(!vmMap.isControlNode()) {
                continue;
            }
            String name = userVmDao.findById(vmMap.getVmId()).getDisplayName().toLowerCase();
            String command = String.format("sudo /opt/bin/kubectl annotate node %s cluster-autoscaler.kubernetes.io/scale-down-disabled=true ; ", name);
            commands.append(command);
        }
        try {
            File pkFile = getManagementServerSshPublicKeyFile();
            Pair<String, Integer> publicIpSshPort = getKubernetesClusterServerIpSshPort(null);
            publicIpAddress = publicIpSshPort.first();
            sshPort = publicIpSshPort.second();

            Pair<Boolean, String> result = SshHelper.sshExecute(publicIpAddress, sshPort, getControlNodeLoginUser(),
            pkFile, null, commands.toString(), 10000, 10000, 60000);
            return result.first();
        } catch (Exception e) {
            String msg = String.format("Failed to taint control nodes on : %s : %s", kubernetesCluster.getName(), e.getMessage());
            logMessage(Level.ERROR, msg, e);
            return false;
        }
    }

    protected boolean deployProvider() {
        Network network = networkDao.findById(kubernetesCluster.getNetworkId());
        // Since the provider creates IP addresses, don't deploy it unless the underlying network supports it
        if (network.getGuestType() != GuestType.Isolated) {
            logMessage(Level.INFO, String.format("Skipping adding the provider as %s is not on an isolated network",
                kubernetesCluster.getName()), null);
            return true;
        }
        File pkFile = getManagementServerSshPublicKeyFile();
        Pair<String, Integer> publicIpSshPort = getKubernetesClusterServerIpSshPort(null);
        publicIpAddress = publicIpSshPort.first();
        sshPort = publicIpSshPort.second();

        try {
            String command = String.format("sudo %s/%s", scriptPath, deployProviderScriptFilename);
            Pair<Boolean, String> result = SshHelper.sshExecute(publicIpAddress, sshPort, getControlNodeLoginUser(),
                pkFile, null, command, 10000, 10000, 60000);

            // Maybe the file isn't present. Try and copy it
            if (!result.first()) {
                logMessage(Level.INFO, "Provider files missing. Adding them now", null);
                retrieveScriptFiles();
                copyScripts(publicIpAddress, sshPort);

                if (!createCloudStackSecret(keys)) {
                    logTransitStateAndThrow(Level.ERROR, String.format("Failed to setup keys for Kubernetes cluster %s",
                        kubernetesCluster.getName()), kubernetesCluster.getId(), KubernetesCluster.Event.OperationFailed);
                }

                // If at first you don't succeed ...
                result = SshHelper.sshExecute(publicIpAddress, sshPort, getControlNodeLoginUser(),
                    pkFile, null, command, 10000, 10000, 60000);
                if (!result.first()) {
                    throw new CloudRuntimeException(result.second());
                }
            }
            return true;
        } catch (Exception e) {
            String msg = String.format("Failed to deploy kubernetes provider: %s : %s", kubernetesCluster.getName(), e.getMessage());
            logAndThrow(Level.ERROR, msg);
            return false;
        }
    }

    public void setKeys(String[] keys) {
        this.keys = keys;
    }
}
