Added the listHostTags API command

api/src/org/apache/cloudstack/api/command/admin/host/ListHostTagsCmd.java

@@ -0,0 +1,64 @@
+/*
+ * 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 org.apache.cloudstack.api.command.admin.host;
+
+import org.apache.log4j.Logger;
+import org.apache.cloudstack.api.APICommand;
+import org.apache.cloudstack.api.ApiCommandJobType;
+import org.apache.cloudstack.api.BaseListCmd;
+import org.apache.cloudstack.api.response.ListResponse;
+import org.apache.cloudstack.api.response.HostTagResponse;
+
+@APICommand(name = "listHostTags", description = "Lists host tags", responseObject = HostTagResponse.class, requestHasSensitiveInfo = false, responseHasSensitiveInfo = false)
+public class ListHostTagsCmd extends BaseListCmd {
+    public static final Logger s_logger = Logger.getLogger(ListHostTagsCmd.class.getName());
+
+    private static final String s_name = "listhosttagsresponse";
+
+    // ///////////////////////////////////////////////////
+    // ////////////// API parameters /////////////////////
+    // ///////////////////////////////////////////////////
+
+    // ///////////////////////////////////////////////////
+    // ///////////////// Accessors ///////////////////////
+    // ///////////////////////////////////////////////////
+
+    // ///////////////////////////////////////////////////
+    // ///////////// API Implementation///////////////////
+    // ///////////////////////////////////////////////////
+
+    @Override
+    public String getCommandName() {
+        return s_name;
+    }
+
+    @Override
+    public ApiCommandJobType getInstanceType() {
+        return ApiCommandJobType.Host;
+    }
+
+    @Override
+    public void execute() {
+        ListResponse<HostTagResponse> response = _queryService.searchForHostTags(this);
+
+        response.setResponseName(getCommandName());
+
+        setResponseObject(response);
+    }
+}

api/src/org/apache/cloudstack/api/response/HostTagResponse.java

@@ -0,0 +1,60 @@
+// 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 org.apache.cloudstack.api.response;
+
+import com.google.gson.annotations.SerializedName;
+import com.cloud.serializer.Param;
+
+import org.apache.cloudstack.api.BaseResponse;
+
+public class HostTagResponse extends BaseResponse {
+    @SerializedName("id")
+    @Param(description = "the ID of the host tag")
+    private String id;
+
+    @SerializedName("hostid")
+    @Param(description = "the host ID of the host tag")
+    private long hostId;
+
+    @SerializedName("name")
+    @Param(description = "the name of the host tag")
+    private String name;
+
+    public String getId() {
+        return id;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    public long getHostId() {
+        return hostId;
+    }
+
+    public void setHostId(long hostId) {
+        this.hostId = hostId;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}

api/src/org/apache/cloudstack/query/QueryService.java

@@ -20,6 +20,7 @@ import java.util.List;
 
 import org.apache.cloudstack.affinity.AffinityGroupResponse;
 import org.apache.cloudstack.api.command.admin.host.ListHostsCmd;
+import org.apache.cloudstack.api.command.admin.host.ListHostTagsCmd;
 import org.apache.cloudstack.api.command.admin.internallb.ListInternalLBVMsCmd;
 import org.apache.cloudstack.api.command.admin.router.ListRoutersCmd;
 import org.apache.cloudstack.api.command.admin.storage.ListImageStoresCmd;
@@ -50,6 +51,7 @@ import org.apache.cloudstack.api.response.DiskOfferingResponse;
 import org.apache.cloudstack.api.response.DomainRouterResponse;
 import org.apache.cloudstack.api.response.EventResponse;
 import org.apache.cloudstack.api.response.HostResponse;
+import org.apache.cloudstack.api.response.HostTagResponse;
 import org.apache.cloudstack.api.response.ImageStoreResponse;
 import org.apache.cloudstack.api.response.InstanceGroupResponse;
 import org.apache.cloudstack.api.response.ListResponse;
@@ -128,5 +130,6 @@ public interface QueryService {
 
     ListResponse<DomainRouterResponse> searchForInternalLbVms(ListInternalLBVMsCmd cmd);
     public ListResponse<StorageTagResponse> searchForStorageTags(ListStorageTagsCmd cmd);
+    public ListResponse<HostTagResponse> searchForHostTags(ListHostTagsCmd cmd);
 
 }

client/tomcatconf/commands.properties.in

@@ -299,6 +299,7 @@ deleteHost=3
 prepareHostForMaintenance=1
 cancelHostMaintenance=1
 listHosts=3
+listHostTags=7
 findHostsForMigration=1
 addSecondaryStorage=1
 updateHostPassword=1

engine/schema/resources/META-INF/cloudstack/core/spring-engine-schema-core-daos-context.xml

@@ -263,6 +263,7 @@
   <bean id="storagePoolDetailsDaoImpl" class="com.cloud.storage.dao.StoragePoolDetailsDaoImpl" />
   <bean id="storagePoolJoinDaoImpl" class="com.cloud.api.query.dao.StoragePoolJoinDaoImpl" />
   <bean id="storageTagDaoImpl" class="com.cloud.api.query.dao.StorageTagDaoImpl" />
+  <bean id="hostTagDaoImpl" class="com.cloud.api.query.dao.HostTagDaoImpl" />
   <bean id="storagePoolWorkDaoImpl" class="com.cloud.storage.dao.StoragePoolWorkDaoImpl" />
   <bean id="templatePrimaryDataStoreDaoImpl" class="org.apache.cloudstack.storage.volume.db.TemplatePrimaryDataStoreDaoImpl" />
   <bean id="uploadDaoImpl" class="com.cloud.storage.dao.UploadDaoImpl" />

server/src/com/cloud/api/ApiDBUtils.java

@@ -41,6 +41,7 @@ import org.apache.cloudstack.api.response.DomainRouterResponse;
 import org.apache.cloudstack.api.response.EventResponse;
 import org.apache.cloudstack.api.response.HostForMigrationResponse;
 import org.apache.cloudstack.api.response.HostResponse;
+import org.apache.cloudstack.api.response.HostTagResponse;
 import org.apache.cloudstack.api.response.ImageStoreResponse;
 import org.apache.cloudstack.api.response.InstanceGroupResponse;
 import org.apache.cloudstack.api.response.ProjectAccountResponse;
@@ -74,6 +75,7 @@ import com.cloud.api.query.dao.DataCenterJoinDao;
 import com.cloud.api.query.dao.DiskOfferingJoinDao;
 import com.cloud.api.query.dao.DomainRouterJoinDao;
 import com.cloud.api.query.dao.HostJoinDao;
+import com.cloud.api.query.dao.HostTagDao;
 import com.cloud.api.query.dao.ImageStoreJoinDao;
 import com.cloud.api.query.dao.InstanceGroupJoinDao;
 import com.cloud.api.query.dao.ProjectAccountJoinDao;
@@ -96,6 +98,7 @@ import com.cloud.api.query.vo.DiskOfferingJoinVO;
 import com.cloud.api.query.vo.DomainRouterJoinVO;
 import com.cloud.api.query.vo.EventJoinVO;
 import com.cloud.api.query.vo.HostJoinVO;
+import com.cloud.api.query.vo.HostTagVO;
 import com.cloud.api.query.vo.ImageStoreJoinVO;
 import com.cloud.api.query.vo.InstanceGroupJoinVO;
 import com.cloud.api.query.vo.ProjectAccountJoinVO;
@@ -390,6 +393,7 @@ public class ApiDBUtils {
     static VolumeJoinDao s_volJoinDao;
     static StoragePoolJoinDao s_poolJoinDao;
     static StorageTagDao s_tagDao;
+    static HostTagDao s_hostTagDao;
     static ImageStoreJoinDao s_imageStoreJoinDao;
     static AccountJoinDao s_accountJoinDao;
     static AsyncJobJoinDao s_jobJoinDao;
@@ -587,6 +591,8 @@ public class ApiDBUtils {
     @Inject
     private StorageTagDao tagDao;
     @Inject
+    private HostTagDao hosttagDao;
+    @Inject
     private ImageStoreJoinDao imageStoreJoinDao;
     @Inject
     private AccountJoinDao accountJoinDao;
@@ -725,6 +731,7 @@ public class ApiDBUtils {
         s_volJoinDao = volJoinDao;
         s_poolJoinDao = poolJoinDao;
         s_tagDao = tagDao;
+        s_hostTagDao = hosttagDao;
         s_imageStoreJoinDao = imageStoreJoinDao;
         s_accountJoinDao = accountJoinDao;
         s_jobJoinDao = jobJoinDao;
@@ -1744,6 +1751,10 @@ public class ApiDBUtils {
         return s_tagDao.newStorageTagResponse(vr);
     }
 
+    public static HostTagResponse newHostTagResponse(HostTagVO vr) {
+        return s_hostTagDao.newHostTagResponse(vr);
+    }
+
     public static StoragePoolResponse fillStoragePoolDetails(StoragePoolResponse vrData, StoragePoolJoinVO vr) {
         return s_poolJoinDao.setStoragePoolResponse(vrData, vr);
     }

server/src/com/cloud/api/query/QueryManagerImpl.java

@@ -36,6 +36,7 @@ import org.apache.cloudstack.api.BaseListProjectAndAccountResourcesCmd;
 import org.apache.cloudstack.api.ResourceDetail;
 import org.apache.cloudstack.api.ResponseObject.ResponseView;
 import org.apache.cloudstack.api.command.admin.account.ListAccountsCmdByAdmin;
+import org.apache.cloudstack.api.command.admin.host.ListHostTagsCmd;
 import org.apache.cloudstack.api.command.admin.host.ListHostsCmd;
 import org.apache.cloudstack.api.command.admin.internallb.ListInternalLBVMsCmd;
 import org.apache.cloudstack.api.command.admin.iso.ListIsosCmdByAdmin;
@@ -72,6 +73,7 @@ import org.apache.cloudstack.api.response.DiskOfferingResponse;
 import org.apache.cloudstack.api.response.DomainRouterResponse;
 import org.apache.cloudstack.api.response.EventResponse;
 import org.apache.cloudstack.api.response.HostResponse;
+import org.apache.cloudstack.api.response.HostTagResponse;
 import org.apache.cloudstack.api.response.ImageStoreResponse;
 import org.apache.cloudstack.api.response.InstanceGroupResponse;
 import org.apache.cloudstack.api.response.ListResponse;
@@ -107,6 +109,7 @@ import com.cloud.api.query.dao.DataCenterJoinDao;
 import com.cloud.api.query.dao.DiskOfferingJoinDao;
 import com.cloud.api.query.dao.DomainRouterJoinDao;
 import com.cloud.api.query.dao.HostJoinDao;
+import com.cloud.api.query.dao.HostTagDao;
 import com.cloud.api.query.dao.ImageStoreJoinDao;
 import com.cloud.api.query.dao.InstanceGroupJoinDao;
 import com.cloud.api.query.dao.ProjectAccountJoinDao;
@@ -129,6 +132,7 @@ import com.cloud.api.query.vo.DiskOfferingJoinVO;
 import com.cloud.api.query.vo.DomainRouterJoinVO;
 import com.cloud.api.query.vo.EventJoinVO;
 import com.cloud.api.query.vo.HostJoinVO;
+import com.cloud.api.query.vo.HostTagVO;
 import com.cloud.api.query.vo.ImageStoreJoinVO;
 import com.cloud.api.query.vo.InstanceGroupJoinVO;
 import com.cloud.api.query.vo.ProjectAccountJoinVO;
@@ -290,6 +294,9 @@ public class QueryManagerImpl extends ManagerBase implements QueryService {
     @Inject
     private StorageTagDao _storageTagDao;
 
+    @Inject
+    private HostTagDao _hostTagDao;
+
     @Inject
     private ImageStoreJoinDao _imageStoreJoinDao;
 
@@ -2183,6 +2190,47 @@ public class QueryManagerImpl extends ManagerBase implements QueryService {
         return new Pair<List<StorageTagVO>, Integer>(vrs, count);
     }
 
+    @Override
+    public ListResponse<HostTagResponse> searchForHostTags(ListHostTagsCmd cmd) {
+        Pair<List<HostTagVO>, Integer> result = searchForHostTagsInternal(cmd);
+        ListResponse<HostTagResponse> response = new ListResponse<HostTagResponse>();
+        List<HostTagResponse> tagResponses = ViewResponseHelper.createHostTagResponse(result.first().toArray(new HostTagVO[result.first().size()]));
+
+        response.setResponses(tagResponses, result.second());
+
+        return response;
+    }
+
+    private Pair<List<HostTagVO>, Integer> searchForHostTagsInternal(ListHostTagsCmd cmd) {
+        Filter searchFilter = new Filter(HostTagVO.class, "id", Boolean.TRUE, null, null);
+
+        SearchBuilder<HostTagVO> sb = _hostTagDao.createSearchBuilder();
+
+        sb.select(null, Func.DISTINCT, sb.entity().getId()); // select distinct
+
+        SearchCriteria<HostTagVO> sc = sb.create();
+
+        // search host tag details by ids
+        Pair<List<HostTagVO>, Integer> uniqueTagPair = _hostTagDao.searchAndCount(sc, searchFilter);
+        Integer count = uniqueTagPair.second();
+
+        if (count.intValue() == 0) {
+            return uniqueTagPair;
+        }
+
+        List<HostTagVO> uniqueTags = uniqueTagPair.first();
+        Long[] vrIds = new Long[uniqueTags.size()];
+        int i = 0;
+
+        for (HostTagVO v : uniqueTags) {
+            vrIds[i++] = v.getId();
+        }
+
+        List<HostTagVO> vrs = _hostTagDao.searchByIds(vrIds);
+
+        return new Pair<List<HostTagVO>, Integer>(vrs, count);
+    }
+
     @Override
     public ListResponse<ImageStoreResponse> searchForImageStores(ListImageStoresCmd cmd) {
         Pair<List<ImageStoreJoinVO>, Integer> result = searchForImageStoresInternal(cmd);

server/src/com/cloud/api/query/ViewResponseHelper.java

@@ -23,7 +23,6 @@ import java.util.LinkedHashMap;
 import java.util.List;
 
 import org.apache.log4j.Logger;
-
 import org.apache.cloudstack.affinity.AffinityGroupResponse;
 import org.apache.cloudstack.api.ApiConstants.HostDetails;
 import org.apache.cloudstack.api.ApiConstants.VMDetails;
@@ -35,6 +34,7 @@ import org.apache.cloudstack.api.response.DomainRouterResponse;
 import org.apache.cloudstack.api.response.EventResponse;
 import org.apache.cloudstack.api.response.HostForMigrationResponse;
 import org.apache.cloudstack.api.response.HostResponse;
+import org.apache.cloudstack.api.response.HostTagResponse;
 import org.apache.cloudstack.api.response.ImageStoreResponse;
 import org.apache.cloudstack.api.response.InstanceGroupResponse;
 import org.apache.cloudstack.api.response.ProjectAccountResponse;
@@ -61,6 +61,7 @@ import com.cloud.api.query.vo.DiskOfferingJoinVO;
 import com.cloud.api.query.vo.DomainRouterJoinVO;
 import com.cloud.api.query.vo.EventJoinVO;
 import com.cloud.api.query.vo.HostJoinVO;
+import com.cloud.api.query.vo.HostTagVO;
 import com.cloud.api.query.vo.ImageStoreJoinVO;
 import com.cloud.api.query.vo.InstanceGroupJoinVO;
 import com.cloud.api.query.vo.ProjectAccountJoinVO;
@@ -301,6 +302,16 @@ public class ViewResponseHelper {
         return list;
     }
 
+    public static List<HostTagResponse> createHostTagResponse(HostTagVO... hostTags) {
+        ArrayList<HostTagResponse> list = new ArrayList<HostTagResponse>();
+
+        for (HostTagVO vr : hostTags) {
+            list.add(ApiDBUtils.newHostTagResponse(vr));
+        }
+
+        return list;
+    }
+
     public static List<ImageStoreResponse> createImageStoreResponse(ImageStoreJoinVO... stores) {
         Hashtable<Long, ImageStoreResponse> vrDataList = new Hashtable<Long, ImageStoreResponse>();
         // Initialise the vrdatalist with the input data

server/src/com/cloud/api/query/dao/HostTagDao.java

@@ -0,0 +1,30 @@
+// 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.api.query.dao;
+
+import java.util.List;
+
+import org.apache.cloudstack.api.response.HostTagResponse;
+
+import com.cloud.api.query.vo.HostTagVO;
+import com.cloud.utils.db.GenericDao;
+
+public interface HostTagDao extends GenericDao<HostTagVO, Long> {
+    HostTagResponse newHostTagResponse(HostTagVO hostTag);
+
+    List<HostTagVO> searchByIds(Long... hostTagIds);
+}

server/src/com/cloud/api/query/dao/HostTagDaoImpl.java

@@ -0,0 +1,126 @@
+// 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.api.query.dao;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.ejb.Local;
+import javax.inject.Inject;
+
+import org.apache.cloudstack.api.response.HostTagResponse;
+import org.apache.cloudstack.framework.config.dao.ConfigurationDao;
+import org.apache.log4j.Logger;
+import org.springframework.stereotype.Component;
+
+import com.cloud.api.query.vo.HostTagVO;
+import com.cloud.utils.db.GenericDaoBase;
+import com.cloud.utils.db.SearchBuilder;
+import com.cloud.utils.db.SearchCriteria;
+
+@Component
+@Local(value = {HostTagDao.class})
+public class HostTagDaoImpl extends GenericDaoBase<HostTagVO, Long> implements HostTagDao {
+    public static final Logger s_logger = Logger.getLogger(HostTagDaoImpl.class);
+
+    @Inject
+    private ConfigurationDao _configDao;
+
+    private final SearchBuilder<HostTagVO> stSearch;
+    private final SearchBuilder<HostTagVO> stIdSearch;
+
+    protected HostTagDaoImpl() {
+        stSearch = createSearchBuilder();
+
+        stSearch.and("idIN", stSearch.entity().getId(), SearchCriteria.Op.IN);
+        stSearch.done();
+
+        stIdSearch = createSearchBuilder();
+
+        stIdSearch.and("id", stIdSearch.entity().getId(), SearchCriteria.Op.EQ);
+        stIdSearch.done();
+
+        _count = "select count(distinct id) from host_tags WHERE ";
+    }
+
+    @Override
+    public HostTagResponse newHostTagResponse(HostTagVO tag) {
+        HostTagResponse tagResponse = new HostTagResponse();
+
+        tagResponse.setName(tag.getName());
+        tagResponse.setHostId(tag.getHostId());
+
+        tagResponse.setObjectName("hosttag");
+
+        return tagResponse;
+    }
+
+    @Override
+    public List<HostTagVO> searchByIds(Long... stIds) {
+        String batchCfg = _configDao.getValue("detail.batch.query.size");
+
+        final int detailsBatchSize = batchCfg != null ? Integer.parseInt(batchCfg) : 2000;
+
+        // query details by batches
+        List<HostTagVO> uvList = new ArrayList<HostTagVO>();
+        int curr_index = 0;
+
+        if (stIds.length > detailsBatchSize) {
+            while ((curr_index + detailsBatchSize) <= stIds.length) {
+                Long[] ids = new Long[detailsBatchSize];
+
+                for (int k = 0, j = curr_index; j < curr_index + detailsBatchSize; j++, k++) {
+                    ids[k] = stIds[j];
+                }
+
+                SearchCriteria<HostTagVO> sc = stSearch.create();
+
+                sc.setParameters("idIN", (Object[])ids);
+
+                List<HostTagVO> vms = searchIncludingRemoved(sc, null, null, false);
+
+                if (vms != null) {
+                    uvList.addAll(vms);
+                }
+
+                curr_index += detailsBatchSize;
+            }
+        }
+
+        if (curr_index < stIds.length) {
+            int batch_size = (stIds.length - curr_index);
+            // set the ids value
+            Long[] ids = new Long[batch_size];
+
+            for (int k = 0, j = curr_index; j < curr_index + batch_size; j++, k++) {
+                ids[k] = stIds[j];
+            }
+
+            SearchCriteria<HostTagVO> sc = stSearch.create();
+
+            sc.setParameters("idIN", (Object[])ids);
+
+            List<HostTagVO> vms = searchIncludingRemoved(sc, null, null, false);
+
+            if (vms != null) {
+                uvList.addAll(vms);
+            }
+        }
+
+        return uvList;
+    }
+}

server/src/com/cloud/api/query/vo/HostTagVO.java

@@ -0,0 +1,61 @@
+// 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.api.query.vo;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+import org.apache.cloudstack.api.InternalIdentity;
+
+/**
+ * Storage Tags DB view.
+ *
+ */
+@Entity
+@Table(name = "host_tags")
+public class HostTagVO extends BaseViewVO implements InternalIdentity {
+    private static final long serialVersionUID = 1L;
+
+    @Id
+    @Column(name = "id")
+    private long id;
+
+    @Column(name = "tag")
+    private String name;
+
+    @Column(name = "host_id")
+    long hostId;
+
+    @Override
+    public long getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public long getHostId() {
+        return hostId;
+    }
+
+    public void setHostId(long hostId) {
+        this.hostId = hostId;
+    }
+}

server/src/com/cloud/server/ManagementServerImpl.java

@@ -40,7 +40,6 @@ import javax.naming.ConfigurationException;
 import org.apache.cloudstack.api.command.user.snapshot.UpdateSnapshotPolicyCmd;
 import org.apache.commons.codec.binary.Base64;
 import org.apache.log4j.Logger;
-
 import org.apache.cloudstack.acl.ControlledEntity;
 import org.apache.cloudstack.affinity.AffinityGroupProcessor;
 import org.apache.cloudstack.affinity.dao.AffinityGroupVMMapDao;
@@ -84,6 +83,7 @@ import org.apache.cloudstack.api.command.admin.host.AddSecondaryStorageCmd;
 import org.apache.cloudstack.api.command.admin.host.CancelMaintenanceCmd;
 import org.apache.cloudstack.api.command.admin.host.DeleteHostCmd;
 import org.apache.cloudstack.api.command.admin.host.FindHostsForMigrationCmd;
+import org.apache.cloudstack.api.command.admin.host.ListHostTagsCmd;
 import org.apache.cloudstack.api.command.admin.host.ListHostsCmd;
 import org.apache.cloudstack.api.command.admin.host.PrepareForMaintenanceCmd;
 import org.apache.cloudstack.api.command.admin.host.ReconnectHostCmd;
@@ -2564,6 +2564,7 @@ public class ManagementServerImpl extends ManagerBase implements ManagementServe
         cmdList.add(CancelMaintenanceCmd.class);
         cmdList.add(DeleteHostCmd.class);
         cmdList.add(ListHostsCmd.class);
+        cmdList.add(ListHostTagsCmd.class);
         cmdList.add(FindHostsForMigrationCmd.class);
         cmdList.add(PrepareForMaintenanceCmd.class);
         cmdList.add(ReconnectHostCmd.class);