Pearl1594 commented on a change in pull request #4329:
URL: https://github.com/apache/cloudstack/pull/4329#discussion_r695801672



##########
File path: 
engine/schema/src/main/java/com/cloud/upgrade/SystemVmTemplateRegistration.java
##########
@@ -0,0 +1,801 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// 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.upgrade;
+
+import com.cloud.hypervisor.Hypervisor;
+import com.cloud.storage.Storage.ImageFormat;
+import com.cloud.storage.VMTemplateVO;
+import com.cloud.utils.DateUtil;
+import com.cloud.utils.Pair;
+import com.cloud.utils.UriUtils;
+import com.cloud.utils.db.GlobalLock;
+import com.cloud.utils.exception.CloudRuntimeException;
+import com.cloud.utils.script.Script;
+import org.apache.log4j.Logger;
+import org.ini4j.Ini;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileReader;
+import java.io.IOException;
+import java.net.URI;
+import java.security.MessageDigest;
+import java.sql.Connection;
+import java.sql.Date;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Locale;
+import java.util.Map;
+import java.util.Set;
+import java.util.UUID;
+import java.util.stream.Collectors;
+
+public class SystemVmTemplateRegistration {
+    private static final Logger LOGGER = 
Logger.getLogger(SystemVmTemplateRegistration.class);
+    private static final String MOUNT_COMMAND = "sudo mount -t nfs %s %s";
+    private static final String UMOUNT_COMMAND = "sudo umount %s";
+    private static final String HASH_ALGORITHM = "MD5";
+    private static final String RELATIVE_TEMPLATE_PATH = 
"./engine/schema/dist/systemvm-templates/";
+    private static final String ABSOLUTE_TEMPLATE_PATH = 
"/usr/share/cloudstack-management/templates/";
+    private static final String TEMPLATES_PATH = fetchTemplatesPath();
+    private static final String METADATA_FILE_NAME = "metadata.ini";
+    private static final String METADATA_FILE = TEMPLATES_PATH + 
METADATA_FILE_NAME;
+    private static final String TEMPORARY_SECONDARY_STORE = 
"/tmp/tmpSecStorage";
+    private static final String PARENT_TEMPLATE_FOLDER = 
TEMPORARY_SECONDARY_STORE;
+    private static final String PARTIAL_TEMPLATE_FOLDER = "/template/tmpl/1/";
+    private static final String FETCH_DISTINCT_ELIGIBLE_ZONES = "SELECT 
DISTINCT(data_center_id) FROM `cloud`.`image_store` WHERE protocol = \"nfs\"  
AND role = \"Image\" AND removed is null";
+    private static final String FETCH_DISTINCT_HYPERVISORS_IN_ZONE = "SELECT 
DISTINCT(hypervisor_type) FROM `cloud`.`cluster` where  removed is null AND 
data_center_id=?";
+    private static final String FETCH_IMAGE_STORE_PER_ZONE = "SELECT url,id 
FROM `cloud`.`image_store` WHERE data_center_id=? AND role = \"Image\" AND 
image_provider_name = \"NFS\" AND removed IS NULL LIMIT 1";
+    private static final String INSERT_VM_TEMPLATE_TABLE = "INSERT INTO 
`cloud`.`vm_template` (uuid, unique_name, name, public, featured, created, 
type, hvm, bits, account_id, url, checksum, enable_password, display_text, 
format, guest_os_id, cross_zones, hypervisor_type, state, deploy_as_is)" +
+        "VALUES (?, ?, ?, 0, 0, ?, 'SYSTEM', 0, 64, 1, ?, ?, 0, ?, ?, ?, 1, ?, 
'Inactive', ?)";
+    private static final String INSERT_TEMPLATE_STORE_REF_TABLE = "INSERT INTO 
`cloud`.`template_store_ref` (store_id,  template_id, created, last_updated, 
job_id, download_pct, download_state, error_str, local_path, install_path, url, 
state, destroyed, is_copy," +
+            " update_count, ref_cnt, store_role) VALUES (?, ?, ?, ?, NULL, 0, 
'NOT_DOWNLOADED', NULL, NULL, ?, ?, 'Allocated', 0, 0, 0, 0, 'Image')";
+    private static final String UPDATE_TEMPLATE_STORE_REF_TABLE = "UPDATE 
`cloud`.`template_store_ref` SET download_pct=100, download_state='DOWNLOADED', 
" +
+            "state='Ready', size=?, physical_size=?, last_updated=?, updated=? 
where template_id=?";
+    private static final String UPDATE_VM_TEMPLATE_ENTRY = "UPDATE 
`cloud`.`vm_template` set size = ?, state = 'Active' where id = ?";
+    private static final String UPDATE_CONFIGURATION_TABLE = "UPDATE 
`cloud`.`configuration` SET value = ? WHERE name = ?";
+    private static final String UPDATE_TEMPLATE_TABLE_ON_FAILURE = "UPDATE 
`cloud`.`vm_template` set removed = ?, state = 'Inactive' where id = ?";
+    private static final String DELETE_TEMPLATE_REF_RECORD_ON_FAILURE = 
"DELETE from `cloud`.`template_store_ref` where template_id = ?";
+    private static final Integer SCRIPT_TIMEOUT = 1800000;
+    private static final Integer LOCK_WAIT_TIMEOUT = 1200;
+    public static String CS_MAJOR_VERSION = "4.16";
+    public static String CS_TINY_VERSION = "0";
+
+    private static class SystemVMTemplateDetails {
+        Long id;
+        String uuid;
+        String name;
+        String uniqueName;
+        Date created;
+        String url;
+        String checksum;
+        ImageFormat format;
+        Integer guestOsId;
+        Hypervisor.HypervisorType hypervisorType;
+        Long storeId;
+        Long size;
+        Long physicalSize;
+        String installPath;
+        boolean deployAsIs;
+        Date updated;
+
+        SystemVMTemplateDetails() {
+        }
+
+        SystemVMTemplateDetails(String uuid, String name, Date created, String 
url, String checksum,
+                                ImageFormat format, Integer guestOsId, 
Hypervisor.HypervisorType hypervisorType,
+                                Long storeId) {
+            this.uuid = uuid;
+            this.name = name;
+            this.created = created;
+            this.url = url;
+            this.checksum = checksum;
+            this.format = format;
+            this.guestOsId = guestOsId;
+            this.hypervisorType = hypervisorType;
+            this.storeId = storeId;
+        }
+
+        public void setId(Long id) {
+            this.id = id;
+        }
+
+        public Long getId() {
+            return id;
+        }
+
+        public String getUuid() {
+            return uuid;
+        }
+
+        public String getName() {
+            return name;
+        }
+
+        public Date getCreated() {
+            return created;
+        }
+
+        public String getUrl() {
+            return url;
+        }
+
+        public String getChecksum() {
+            return checksum;
+        }
+
+        public ImageFormat getFormat() {
+            return format;
+        }
+
+        public Integer getGuestOsId() {
+            return guestOsId;
+        }
+
+        public Hypervisor.HypervisorType getHypervisorType() {
+            return hypervisorType;
+        }
+
+        public Long getStoreId() {
+            return storeId;
+        }
+
+        public Long getSize() {
+            return size;
+        }
+
+        public void setSize(Long size) {
+            this.size = size;
+        }
+
+        public Long getPhysicalSize() {
+            return physicalSize;
+        }
+
+        public void setPhysicalSize(Long physicalSize) {
+            this.physicalSize = physicalSize;
+        }
+
+        public String getInstallPath() {
+            return installPath;
+        }
+
+        public void setInstallPath(String installPath) {
+            this.installPath = installPath;
+        }
+
+        public String getUniqueName() {
+            return uniqueName;
+        }
+
+        public void setUniqueName(String uniqueName) {
+            this.uniqueName = uniqueName;
+        }
+
+        public boolean isDeployAsIs() {
+            return deployAsIs;
+        }
+
+        public void setDeployAsIs(boolean deployAsIs) {
+            this.deployAsIs = deployAsIs;
+        }
+
+        public Date getUpdated() {
+            return updated;
+        }
+
+        public void setUpdated(Date updated) {
+            this.updated = updated;
+        }
+    }
+
+    public static final List<Hypervisor.HypervisorType> hypervisorList = 
Arrays.asList(Hypervisor.HypervisorType.KVM,
+            Hypervisor.HypervisorType.VMware,
+            Hypervisor.HypervisorType.XenServer,
+            Hypervisor.HypervisorType.Hyperv,
+            Hypervisor.HypervisorType.LXC,
+            Hypervisor.HypervisorType.Ovm3
+    );
+
+    public static final Map<Hypervisor.HypervisorType, String> 
NewTemplateNameList = new HashMap<Hypervisor.HypervisorType, String>();
+    public static final Map<Hypervisor.HypervisorType, String> fileNames = new 
HashMap<Hypervisor.HypervisorType, String>();
+    public static final Map<Hypervisor.HypervisorType, String> newTemplateUrl 
= new HashMap<Hypervisor.HypervisorType, String>();
+    public static final Map<Hypervisor.HypervisorType, String> 
newTemplateChecksum = new HashMap<Hypervisor.HypervisorType, String>();
+
+    public static final Map<Hypervisor.HypervisorType, String> 
routerTemplateConfigurationNames = new HashMap<Hypervisor.HypervisorType, 
String>() {
+        {
+            put(Hypervisor.HypervisorType.KVM, "router.template.kvm");
+            put(Hypervisor.HypervisorType.VMware, "router.template.vmware");
+            put(Hypervisor.HypervisorType.XenServer, 
"router.template.xenserver");
+            put(Hypervisor.HypervisorType.Hyperv, "router.template.hyperv");
+            put(Hypervisor.HypervisorType.LXC, "router.template.lxc");
+            put(Hypervisor.HypervisorType.Ovm3, "router.template.ovm3");
+        }
+    };
+
+    public static final Map<Hypervisor.HypervisorType, Integer> 
hypervisorGuestOsMap = new HashMap<Hypervisor.HypervisorType, Integer>() {
+        {
+            put(Hypervisor.HypervisorType.KVM, 15);
+            put(Hypervisor.HypervisorType.XenServer, 99);
+            put(Hypervisor.HypervisorType.VMware, 99);
+            put(Hypervisor.HypervisorType.Hyperv, 15);
+            put(Hypervisor.HypervisorType.LXC, 15);
+            put(Hypervisor.HypervisorType.Ovm3, 183);
+        }
+    };
+
+    public static final Map<Hypervisor.HypervisorType, ImageFormat> 
hypervisorImageFormat = new HashMap<Hypervisor.HypervisorType, ImageFormat>() {
+        {
+            put(Hypervisor.HypervisorType.KVM, ImageFormat.QCOW2);
+            put(Hypervisor.HypervisorType.XenServer, ImageFormat.VHD);
+            put(Hypervisor.HypervisorType.VMware, ImageFormat.OVA);
+            put(Hypervisor.HypervisorType.Hyperv, ImageFormat.VHD);
+            put(Hypervisor.HypervisorType.LXC, ImageFormat.QCOW2);
+            put(Hypervisor.HypervisorType.Ovm3, ImageFormat.RAW);
+        }
+    };
+
+    public static boolean validateIfSeeded(String url, String path) {
+        try {
+            mountStore(url);
+            int lastIdx = path.lastIndexOf(File.separator);
+            String partialDirPath = path.substring(0, lastIdx);
+            String templatePath = TEMPORARY_SECONDARY_STORE + File.separator + 
partialDirPath;
+            File templateProps = new File(templatePath + 
"/template.properties");
+            if (templateProps.exists()) {
+                LOGGER.info("SystemVM template already seeded, skipping 
registration");
+                return true;
+            }
+            LOGGER.info("SystemVM template not seeded");
+            return false;
+        } catch (Exception e) {
+            throw new CloudRuntimeException("Failed to verify if the template 
is seeded", e);
+        } finally {
+            unmountStore();
+        }
+    }
+
+    private static String calculateChecksum(MessageDigest digest, File file) {
+        try {
+            FileInputStream fis = new FileInputStream(file);
+            byte[] byteArray = new byte[1024];
+            int bytesCount = 0;
+
+            while ((bytesCount = fis.read(byteArray)) != -1) {
+                digest.update(byteArray, 0, bytesCount);
+            }
+
+            fis.close();
+            byte[] bytes = digest.digest();
+
+            StringBuilder sb = new StringBuilder();
+            for (byte aByte : bytes) {
+                sb.append(Integer
+                        .toString((aByte & 0xff) + 0x100, 16)
+                        .substring(1));
+            }
+            return sb.toString();
+        } catch (IOException e) {
+            String errMsg = String.format("Failed to calculate Checksum of 
template file: %s ", file.getName());
+            LOGGER.error(errMsg, e);
+            throw new CloudRuntimeException(errMsg, e);
+        }
+    }
+
+    public static long isTemplateAlreadyRegistered(Connection conn, 
Pair<Hypervisor.HypervisorType, String> hypervisorAndTemplateName) {
+        long templateId = -1;
+        try {
+            PreparedStatement pstmt = conn.prepareStatement("select id from 
`cloud`.`vm_template` where name = ? and removed is null order by id desc limit 
1");
+            // Get systemvm template id for corresponding hypervisor
+            pstmt.setString(1, hypervisorAndTemplateName.second());
+            try (ResultSet rs = pstmt.executeQuery()) {
+                if (rs.next()) {
+                    templateId = rs.getLong(1);
+                }
+            } catch (final SQLException e) {
+                String errMsg = "updateSystemVmTemplates: Exception caught 
while getting ids of SystemVM templates";
+                LOGGER.error(errMsg, e);
+                throw new CloudRuntimeException(errMsg, e);
+            }
+        } catch (SQLException e) {
+            String errorMessage = "Unable to upgrade the database";
+            LOGGER.error(errorMessage, e);
+            throw new CloudRuntimeException(errorMessage, e);
+        }
+        return templateId;
+    }
+
+    private static String fetchTemplatesPath() {
+            String filePath = RELATIVE_TEMPLATE_PATH + METADATA_FILE_NAME;
+            LOGGER.debug(String.format("Looking for file [ %s ] in the 
classpath.", filePath));
+            File metaFile = new File(filePath);
+            String templatePath = null;
+            if (metaFile.exists()) {
+                templatePath = RELATIVE_TEMPLATE_PATH;
+            }
+            if (templatePath == null) {
+                filePath = ABSOLUTE_TEMPLATE_PATH + METADATA_FILE_NAME;
+                metaFile = new File(filePath);
+                templatePath = ABSOLUTE_TEMPLATE_PATH;
+                LOGGER.debug(String.format("Looking for file [ %s ] in the 
classpath.", filePath));
+                if (!metaFile.exists()) {
+                    String errMsg = String.format("Unable to locate metadata 
file in your setup at %s", filePath.toString());
+                    LOGGER.error(errMsg);
+                    throw new CloudRuntimeException(errMsg);
+                }
+            }
+        return templatePath;
+    }
+
+    private static String getHypervisorName(String name) {
+        if (name.equals("xenserver")) {
+            return "xen";
+        }
+        if (name.equals("ovm3")) {
+            return "ovm";
+        }
+        return name;
+
+    }
+
+    private static Hypervisor.HypervisorType getHypervisorType(String 
hypervisor) {
+        if (hypervisor.equalsIgnoreCase("xen")) {
+            hypervisor = "xenserver";
+        } else if (hypervisor.equalsIgnoreCase("ovm")) {
+            hypervisor = "ovm3";
+        }
+        return Hypervisor.HypervisorType.getType(hypervisor);
+    }
+
+    private static List<Long> getEligibleZoneIds(Connection conn) {
+        List<Long> zones = new ArrayList<Long>();
+        try {
+            PreparedStatement pstmt = 
conn.prepareStatement(FETCH_DISTINCT_ELIGIBLE_ZONES);
+            ResultSet rs = pstmt.executeQuery();
+            while (rs.next()) {
+                zones.add(rs.getLong(1));
+            }
+        } catch (SQLException e) {
+            String errMsg = "Failed to fetch eligible zones for SystemVM 
template registration";
+            LOGGER.error(errMsg, e);
+            throw new CloudRuntimeException(errMsg, e);
+        }
+        return zones;
+    }
+
+    private static Pair<String, Long> getNfsStoreInZone(Connection conn, Long 
zoneId) {
+        String url = null;
+        Long storeId = null;
+        try {
+            PreparedStatement pstmt = 
conn.prepareStatement(FETCH_IMAGE_STORE_PER_ZONE);
+            if(pstmt != null) {
+                pstmt.setLong(1, zoneId);
+                ResultSet resultSet = pstmt.executeQuery();
+                while (resultSet.next()) {
+                    url = resultSet.getString(1);
+                    storeId = resultSet.getLong(2);
+                }
+            }
+        } catch (SQLException e) {
+            String errMsg = String.format("Failed to fetch NFS store in zone = 
%s for SystemVM template registration", zoneId);
+            LOGGER.error(errMsg, e);
+            throw new CloudRuntimeException(errMsg, e);
+        }
+        if (url == null || storeId == null) {
+            throw new CloudRuntimeException(String.format("Failed to get an 
NFS store in zone: %s", zoneId));
+        }
+        return new Pair<>(url, storeId);
+    }
+
+    public static void mountStore(String storeUrl) {
+        try {
+            if (storeUrl != null) {
+                URI uri = new URI(UriUtils.encodeURIComponent(storeUrl));
+                String host = uri.getHost();
+                String mountPath = uri.getPath();
+                Script.runSimpleBashScript("mkdir -p " + 
TEMPORARY_SECONDARY_STORE);
+                String mount = String.format(MOUNT_COMMAND, host + ":" + 
mountPath, TEMPORARY_SECONDARY_STORE);
+                Script.runSimpleBashScript(mount);
+            }
+        } catch (Exception e) {
+            String msg = "NFS Store URL is not in the correct format";
+            LOGGER.error(msg, e);
+            throw new CloudRuntimeException(msg, e);
+
+        }
+    }
+
+    private static List<String> fetchAllHypervisors(Connection conn, Long 
zoneId) {
+        List<String> hypervisorList = new ArrayList<>();
+        try {
+            PreparedStatement pstmt = 
conn.prepareStatement(FETCH_DISTINCT_HYPERVISORS_IN_ZONE);
+            if(pstmt != null) {
+                pstmt.setLong(1, zoneId);
+                ResultSet resultSet = pstmt.executeQuery();
+                while (resultSet.next()) {
+                    hypervisorList.add(resultSet.getString(1));
+                }
+            }
+        } catch (SQLException e) {
+            String errMsg = String.format("Failed to fetch distinct 
hypervisors in zone: %s for SystemVM template registration", zoneId);
+            LOGGER.error(errMsg, e);
+            throw new CloudRuntimeException(errMsg, e);
+        }
+        return hypervisorList;
+    }
+
+    private static Long createTemplateObjectInDB(Connection conn, 
SystemVMTemplateDetails details) {
+        Long id = null;
+        try {
+            PreparedStatement pstmt = 
conn.prepareStatement(INSERT_VM_TEMPLATE_TABLE);
+            if (pstmt != null) {
+                int i = 1;
+                pstmt.setString(i++, details.getUuid());
+                pstmt.setString(i++, details.getUuid());
+                pstmt.setString(i++, details.getName());
+                pstmt.setDate(i++, details.getCreated());
+                pstmt.setString(i++, details.getUrl());
+                pstmt.setString(i++, details.getChecksum());
+                pstmt.setString(i++, details.getName());
+                pstmt.setString(i++, details.getFormat().toString());
+                pstmt.setLong(i++, details.getGuestOsId());
+                pstmt.setString(i++, details.getHypervisorType().toString());
+                pstmt.setBoolean(i++, details.getHypervisorType() == 
Hypervisor.HypervisorType.VMware);
+                pstmt.executeUpdate();
+
+                pstmt = conn.prepareStatement("SELECT id FROM vm_template 
ORDER BY id DESC LIMIT 1");
+                try (ResultSet rs = pstmt.executeQuery()) {
+                    if (rs.next()) {
+                        id = rs.getLong(1);
+                    }
+                } catch (final SQLException e) {
+                    String errMsg = "Failed to fetch template id ";
+                    LOGGER.error(errMsg, e);
+                    throw new CloudRuntimeException(errMsg, e);
+                }
+            }
+        } catch (Exception e) {
+            throw new CloudRuntimeException(String.format("Failed to create 
vm_template record for the systemVM template for hypervisor: %s", 
details.getHypervisorType().name()), e);
+        }
+        return id;
+    }
+
+    private static void createTemplateStoreRefEntry(Connection conn, 
SystemVMTemplateDetails details) {
+        try {
+            PreparedStatement pstmt = 
conn.prepareStatement(INSERT_TEMPLATE_STORE_REF_TABLE);
+            if (pstmt != null) {
+                int i = 1;
+                pstmt.setLong(i++, details.getStoreId());
+                pstmt.setLong(i++, details.getId());
+                pstmt.setDate(i++, details.getCreated());
+                pstmt.setDate(i++, details.getCreated());
+                pstmt.setString(i++, details.getInstallPath());
+                pstmt.setString(i++, details.getUrl());
+                pstmt.executeUpdate();
+            }
+        } catch (Exception e) {
+            throw new CloudRuntimeException(String.format("Failed to create 
template_store_ref record for the systemVM template for hypervisor: %s", 
details.getHypervisorType().name()), e);
+        }
+    }
+
+    public static void updateDb(Connection conn,  SystemVMTemplateDetails 
details, boolean updateTemplateDetails) {
+        try {
+            int i = 1;
+            PreparedStatement pstmt = null;
+            if (updateTemplateDetails) {
+                pstmt = conn.prepareStatement(UPDATE_VM_TEMPLATE_ENTRY);
+                if (pstmt != null) {
+                    pstmt.setLong(i++, details.getSize());
+                    pstmt.setLong(i++, details.getId());
+                    pstmt.executeUpdate();
+                }
+            }
+            i = 1;
+            pstmt = conn.prepareStatement(UPDATE_TEMPLATE_STORE_REF_TABLE);
+            if (pstmt != null) {
+                pstmt.setLong(i++, details.getSize());
+                pstmt.setLong(i++, details.getPhysicalSize());
+                pstmt.setDate(i++, details.getUpdated());
+                pstmt.setDate(i++, details.getUpdated());
+                pstmt.setLong(i++, details.getId());
+                pstmt.executeUpdate();
+            }
+        } catch (Exception e) {
+            throw new CloudRuntimeException(String.format("Failed to update 
template_store_ref record for the systemVM template registered for hypervisor: 
%s", details.getHypervisorType().name()), e);
+        }
+    }
+
+    public static void updateSystemVMEntries(Connection conn, Long templateId, 
Pair<Hypervisor.HypervisorType, String> hypervisorAndTemplateName) {
+        // update template ID of system Vms
+        try {
+            PreparedStatement update_templ_id_pstmt = conn
+                    .prepareStatement("update `cloud`.`vm_instance` set 
vm_template_id = ? where type <> 'User' and hypervisor_type = ? and removed is 
NULL");
+            update_templ_id_pstmt.setLong(1, templateId);
+            update_templ_id_pstmt.setString(2, 
hypervisorAndTemplateName.first().toString());
+            update_templ_id_pstmt.executeUpdate();
+        } catch (SQLException e) {
+            String errMsg = String.format("updateSystemVmTemplates:Exception 
while setting template for %s to 
%s",hypervisorAndTemplateName.first().toString(), templateId);
+            LOGGER.error(errMsg, e);
+            throw new CloudRuntimeException(errMsg, e);
+        }
+    }
+
+    public static void updateConfigurationParams(Connection conn, Map<String, 
String> configParams) {
+        String key = null;
+        String value = null;
+        try {
+            PreparedStatement pstmt = 
conn.prepareStatement(UPDATE_CONFIGURATION_TABLE);
+            for (Map.Entry<String, String> config : configParams.entrySet()) {
+                key = config.getKey();
+                value = config.getValue();
+                pstmt.setString(1, value);
+                pstmt.setString(2, key);
+                pstmt.executeUpdate();
+            }
+
+        } catch (final SQLException e) {
+            String errMsg = String.format("updateSystemVmTemplates: Exception 
while setting %s to %s ", key, value);
+            LOGGER.error(errMsg, e);
+            throw new CloudRuntimeException(errMsg, e);
+        }
+    }
+
+    private static void readTemplateProperties(String path, 
SystemVMTemplateDetails details) {
+        File tmpFile = new File(path);
+        Long size = null;
+        Long physicalSize = 0L;
+        try (FileReader fr = new FileReader(tmpFile); BufferedReader brf = new 
BufferedReader(fr);) {
+            String line = null;
+            while ((line = brf.readLine()) != null) {
+                if (line.startsWith("size=")) {
+                    physicalSize = Long.parseLong(line.split("=")[1]);
+                } else if (line.startsWith("virtualsize=")) {
+                    size = Long.parseLong(line.split("=")[1]);
+                }
+                if (size == null) {
+                    size = physicalSize;
+                }
+            }
+        } catch (IOException ex) {
+            LOGGER.warn("Failed to read from template.properties", ex);
+        }
+        details.setSize(size);
+        details.setPhysicalSize(physicalSize);
+    }
+
+    private static  void updateTemplateTablesOnFailure(Connection conn, long 
templateId) {
+        try {
+            PreparedStatement pstmt = 
conn.prepareStatement(UPDATE_TEMPLATE_TABLE_ON_FAILURE);
+            if (pstmt != null) {
+                Date removedTime = new 
Date(DateUtil.currentGMTTime().getTime());
+                pstmt.setDate(1, removedTime);
+                pstmt.setLong(2, templateId);
+                pstmt.executeUpdate();
+            }
+
+            PreparedStatement pstmt1 = 
conn.prepareStatement(DELETE_TEMPLATE_REF_RECORD_ON_FAILURE);
+            if (pstmt1 != null) {
+                pstmt1.setLong(1, templateId);
+                pstmt1.executeUpdate();
+            }
+        } catch (Exception e) {
+            String errMsg = "updateSystemVmTemplates: Exception while updating 
vm_template and template_store_ref tables on failure";
+            LOGGER.error(errMsg, e);
+            throw new CloudRuntimeException(errMsg, e);
+        }
+    }
+
+    public static void unmountStore() {
+        try {
+            LOGGER.info("Unmounting store");
+            String umountCmd = String.format(UMOUNT_COMMAND, 
TEMPORARY_SECONDARY_STORE);
+            Script.runSimpleBashScript(umountCmd);
+        } catch (Exception e) {
+            String msg = String.format("Failed to unmount store mounted at 
%s", TEMPORARY_SECONDARY_STORE);
+            LOGGER.error(msg, e);
+            throw new CloudRuntimeException(msg, e);
+        }
+    }
+
+    private static void setupTemplate(String templateName, 
Pair<Hypervisor.HypervisorType, String> hypervisorAndTemplateName,
+        String destTempFolder) throws CloudRuntimeException{
+        String storageScriptsDir = "scripts/storage/secondary";
+        String setupTmpltScript = Script.findScript(storageScriptsDir, 
"setup-sysvm-tmplt");
+        if (setupTmpltScript == null) {
+            throw new CloudRuntimeException("Unable to find the 
createtmplt.sh");
+        }
+        Script scr = new Script(setupTmpltScript, SCRIPT_TIMEOUT, LOGGER);

Review comment:
       It isn't required that the script be run by root user - the necessary 
command - "touch" has been added to the  `/etc/sudoers.d/cloudstack-management` 
file




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