webadmin: added filter to display only not in use LUNs

An existing problem:
When creating a new storage domain, when selecting a LUN, both unused LUNs and used LUNs are shown in the list. Since the list of LUNs can be very large, it is very difficult to search for unused LUNs that can be selected for a storage domain.
This happens in the following cases:
	- selecting a LUN when creating a new storage domain;
	- selecting a LUN when editing an existing storage domain;
	- selecting a LUN when creating RDM disks for a VM.

Problem solving:
The filter "Hide used LUNs" is added to the list of LUNs. When this filter is checked, the list shows only unused LUNs that can be added to the storage domain. This filter is checked by default.

Signed-off-by: Evgeniy Kononov <[email protected]>

Author: ekononov-dev

frontend/webadmin/modules/gwt-common/src/main/java/org/ovirt/engine/ui/common/CommonApplicationConstants.java

@@ -1964,4 +1964,6 @@ public interface CommonApplicationConstants extends Constants {
     String permissionFilter();
 
     String propertyId();
+
+    String hideUsedLunsLabel();
 }

frontend/webadmin/modules/gwt-common/src/main/java/org/ovirt/engine/ui/common/widget/PaginationControl.java

@@ -54,6 +54,10 @@ public void goBack() {
         @Override
         public void refresh() {
         }
+
+        @Override
+        public void reload() {
+        }
     };
 
     interface WidgetUiBinder extends UiBinder<FlowPanel, PaginationControl> {
@@ -114,6 +118,11 @@ public void setDataProvider(PagingDataProvider dataProvider) {
         updateTableControls();
     }
 
+    public void reload() {
+        getDataProvider().reload();
+        updateTableControls();
+    }
+
     @UiHandler("prevPageButton")
     public void handlePrevPageButtonClick(ClickEvent event) {
         getDataProvider().goBack();

frontend/webadmin/modules/gwt-common/src/main/java/org/ovirt/engine/ui/common/widget/table/HasPaging.java

@@ -1,5 +1,7 @@
 package org.ovirt.engine.ui.common.widget.table;
 
+import java.util.Collection;
+
 /**
  * Classes that implement this interface support forward/back paging functionality.
  *
@@ -30,4 +32,18 @@ public interface HasPaging {
      * Refresh the current page.
      */
     void refresh();
+
+    /**
+     * Reload all and go to the first page.
+     */
+    default void reload() {
+
+    }
+
+    /**
+     * Reload all and go to the first page (with providing access to the items, if needed).
+     */
+    default void reload(Collection items) {
+
+    }
 }

frontend/webadmin/modules/gwt-common/src/main/java/org/ovirt/engine/ui/common/widget/uicommon/storage/FcpStorageView.java

@@ -2,7 +2,10 @@
 
 import java.util.List;
 
+import org.gwtbootstrap3.client.ui.CheckBox;
+import org.ovirt.engine.ui.common.CommonApplicationConstants;
 import org.ovirt.engine.ui.common.editor.UiCommonEditorDriver;
+import org.ovirt.engine.ui.common.gin.AssetProvider;
 import org.ovirt.engine.ui.common.widget.HasValidation;
 import org.ovirt.engine.ui.common.widget.PaginationControl;
 import org.ovirt.engine.ui.common.widget.ValidatedPanelWidget;
@@ -32,14 +35,23 @@ public class FcpStorageView extends AbstractStorageView<SanStorageModelBase> imp
     @UiField
     PaginationControl paginationControl;
 
+    @UiField
+    @Ignore
+    CheckBox hideUsedLunsCheckBox;
+
+    LunFilter lunFilter;
+
     private final Driver driver = GWT.create(Driver.class);
 
     private double panelHeight = 292;
 
     private double listHeight = 278;
 
+    private static final CommonApplicationConstants constants = AssetProvider.getConstants();
+
     public FcpStorageView(boolean multiSelection) {
         initWidget(ViewUiBinder.uiBinder.createAndBindUi(this));
+        localize();
         driver.initialize(this);
         this.multiSelection = multiSelection;
     }
@@ -51,6 +63,10 @@ public FcpStorageView(boolean multiSelection, double panelHeight, double listHei
         this.listHeight = listHeight;
     }
 
+    void localize() {
+        hideUsedLunsCheckBox.setHTML(constants.hideUsedLunsLabel());
+    }
+
     @Override
     public void edit(final SanStorageModelBase object) {
         driver.edit(object);
@@ -64,6 +80,8 @@ public void edit(final SanStorageModelBase object) {
                 onIsValidPropertyChange(object);
             }
         });
+
+        initHideUsedLunsCheckBox();
     }
 
     void onIsValidPropertyChange(Model model) {
@@ -105,8 +123,10 @@ public void focus() {
 
     protected void initLists(SanStorageModelBase model) {
         PageFilter pageFilter = new PageFilter(50);
+        lunFilter = new LunFilter(hideUsedLunsCheckBox.getValue());
         SanStorageLunToTargetList sanStorageLunToTargetList =
-                new SanStorageLunToTargetList(PagingProxyModel.create(pageFilter, model), true, multiSelection);
+                new SanStorageLunToTargetList(PagingFilteredProxyModel.create(pageFilter, lunFilter, model),
+                        true, multiSelection);
         sanStorageLunToTargetList.activateItemsUpdate();
         paginationControl.setDataProvider(StoragePagingDataProvider.create(pageFilter, sanStorageLunToTargetList));
         model.getItemsChangedEvent().addListener((ev, sender, args) -> paginationControl.updateTableControls());
@@ -119,6 +139,15 @@ protected void initLists(SanStorageModelBase model) {
         contentPanel.setWidget(sanStorageLunToTargetList);
     }
 
+    private void initHideUsedLunsCheckBox() {
+        hideUsedLunsCheckBox.addValueChangeHandler(event -> {
+            if (lunFilter != null) {
+                lunFilter.setIsHideUsedLuns(event.getValue());
+            }
+            paginationControl.reload();
+        });
+    }
+
     interface Driver extends UiCommonEditorDriver<SanStorageModelBase, FcpStorageView> {
     }
 

frontend/webadmin/modules/gwt-common/src/main/java/org/ovirt/engine/ui/common/widget/uicommon/storage/FcpStorageView.ui.xml

@@ -14,6 +14,12 @@
         justify-content: flex-end;
         border-bottom: none;
         }
+
+        .hideUsedLunsCheckBox {
+            font-size: 12px;
+            padding-left: 23px;
+            height: 10px;
+        }
     </ui:style>
 
     <b:Container fluid="true">
@@ -27,6 +33,9 @@
                 <g:Label ui:field="warning" addStyleNames="{style.errorMessageLabel}"/>
             </b:Column>
         </b:Row>
+        <b:Row>
+            <b:CheckBox ui:field="hideUsedLunsCheckBox" value="true" addStyleNames="{style.hideUsedLunsCheckBox}" />
+        </b:Row>
         <b:Row>
             <b:Column size="SM_12">
                 <g:FlowPanel addStyleNames="content-view-pf-pagination clearfix {style.paginationBar}">

frontend/webadmin/modules/gwt-common/src/main/java/org/ovirt/engine/ui/common/widget/uicommon/storage/FilteredProxyModel.java

@@ -0,0 +1,29 @@
+package org.ovirt.engine.ui.common.widget.uicommon.storage;
+
+import java.util.Collection;
+
+import org.ovirt.engine.ui.uicommonweb.models.storage.SanStorageModelBase;
+
+/**
+ * Create a proxy model that will intercept {@link SanStorageModelBase#getItems()} and filter the items.
+ * From a logical point of view all data is still one model i.e. user changes are not lost when
+ * applying the filter and submitting.
+ */
+public class FilteredProxyModel extends ProxyModelBase {
+
+    private final ModelFilter<?> filter;
+
+    public FilteredProxyModel(SanStorageModelBase model, ModelFilter<?> filter) {
+        super(model);
+        this.filter = filter;
+    }
+
+    public static FilteredProxyModel create(ModelFilter<?> filter, SanStorageModelBase model) {
+        return new FilteredProxyModel(model, filter);
+    }
+
+    @Override
+    public Collection getItems() {
+        return filter.filter(getModel().getItems());
+    }
+}

frontend/webadmin/modules/gwt-common/src/main/java/org/ovirt/engine/ui/common/widget/uicommon/storage/IscsiLunToTargetView.java

@@ -30,6 +30,8 @@ interface ViewUiBinder extends UiBinder<Widget, IscsiLunToTargetView> {
     private final double treeHeight;
     private final boolean multiSelection;
 
+    private LunFilter lunFilter;
+
     public IscsiLunToTargetView(double treeHeight, boolean multiSelection) {
         this.treeHeight = treeHeight;
         this.multiSelection = multiSelection;
@@ -38,14 +40,20 @@ public IscsiLunToTargetView(double treeHeight, boolean multiSelection) {
         driver.initialize(this);
     }
 
+    public IscsiLunToTargetView(double treeHeight, boolean multiSelection, LunFilter lunFilter) {
+        this(treeHeight, multiSelection);
+        this.lunFilter = lunFilter;
+    }
+
     @Override
     public void edit(final SanStorageModelBase object) {
         driver.edit(object);
         initLists(object);
     }
 
     void initLists(SanStorageModelBase object) {
-        sanStorageLunToTargetList = new SanStorageLunToTargetList(object, false, multiSelection);
+        sanStorageLunToTargetList = new SanStorageLunToTargetList(FilteredProxyModel.create(lunFilter, object),
+                false, multiSelection);
         sanStorageLunToTargetList.setTreeContainerHeight(treeHeight);
         lunsListPanel.add(sanStorageLunToTargetList);
     }

frontend/webadmin/modules/gwt-common/src/main/java/org/ovirt/engine/ui/common/widget/uicommon/storage/IscsiStorageView.java

@@ -2,6 +2,7 @@
 
 import java.util.List;
 
+import org.gwtbootstrap3.client.ui.CheckBox;
 import org.ovirt.engine.core.compat.StringHelper;
 import org.ovirt.engine.ui.common.CommonApplicationConstants;
 import org.ovirt.engine.ui.common.editor.UiCommonEditorDriver;
@@ -72,11 +73,18 @@ interface ViewUiBinder extends UiBinder<Widget, IscsiStorageView> {
     @Ignore
     Label subLabel;
 
+    @UiField
+    @Ignore
+    CheckBox hideUsedLunsCheckBox;
+
     private double treeCollapsedHeight = 245;
     private double treeExpandedHeight = 355;
     private double lunsTreeHeight = 405;
     private double tabContentHeight = 100;
 
+    private LunFilter lunFilter;
+    private SanTargetFilter sanTargetFilter;
+
     private final Driver driver = GWT.create(Driver.class);
 
     private static final CommonApplicationConstants constants = AssetProvider.getConstants();
@@ -103,6 +111,7 @@ public IscsiStorageView(boolean multiSelection,
     void localize() {
         lunToTargetsTab.setLabel(constants.storageIscsiPopupLunToTargetsTabLabel());
         targetsToLunTab.setLabel(constants.storageIscsiPopupTargetsToLunTabLabel());
+        hideUsedLunsCheckBox.setHTML(constants.hideUsedLunsLabel());
     }
 
     @Override
@@ -170,12 +179,17 @@ public void edit(final IscsiStorageModel object) {
                 warning.setVisible(!StringHelper.isNullOrEmpty(warningText));
             }
         });
+
+        initHideUsedLunsCheckBox(object);
     }
 
     void initLists(IscsiStorageModel object) {
+        lunFilter = new LunFilter(hideUsedLunsCheckBox.getValue());
+        sanTargetFilter = new SanTargetFilter(hideUsedLunsCheckBox.getValue());
         // Create discover panel and storage lists
-        iscsiTargetToLunView = new IscsiTargetToLunView(treeCollapsedHeight, treeExpandedHeight, false, multiSelection);
-        iscsiLunToTargetView = new IscsiLunToTargetView(lunsTreeHeight, multiSelection);
+        iscsiTargetToLunView = new IscsiTargetToLunView(treeCollapsedHeight, treeExpandedHeight, false, multiSelection,
+                sanTargetFilter, lunFilter);
+        iscsiLunToTargetView = new IscsiLunToTargetView(lunsTreeHeight, multiSelection, lunFilter);
 
         // Update Style
         dialogTabPanel.getElement().getStyle().setHeight(tabContentHeight, Unit.PCT);
@@ -243,6 +257,18 @@ public void cleanup() {
     public void focus() {
     }
 
+    private void initHideUsedLunsCheckBox(IscsiStorageModel object) {
+        hideUsedLunsCheckBox.addValueChangeHandler(event -> {
+            if (lunFilter != null) {
+                lunFilter.setIsHideUsedLuns(event.getValue());
+            }
+            if (sanTargetFilter != null) {
+                sanTargetFilter.setIsHideUsedLuns(event.getValue());
+            }
+            updateListByGrouping(object);
+        });
+    }
+
     interface WidgetStyle extends CssResource {
         String barEditDomain();
 

frontend/webadmin/modules/gwt-common/src/main/java/org/ovirt/engine/ui/common/widget/uicommon/storage/IscsiStorageView.ui.xml

@@ -90,6 +90,12 @@
             font-size: 12px;
             padding-left: 50px;
         }
+
+        .hideUsedLunsCheckBox {
+            font-size: 12px;
+            padding-left: 60px;
+            height: 10px;
+        }
     </ui:style>
 
     <b:Container fluid="true">
@@ -105,6 +111,9 @@
                 <pa:AlertPanel ui:field="warning" visible="false" />
             </b:Column>
         </b:Row>
+        <b:Row>
+            <b:CheckBox ui:field="hideUsedLunsCheckBox" value="true" addStyleNames="{style.hideUsedLunsCheckBox}" />
+        </b:Row>
         <b:Row>
             <t:DialogTabPanel ui:field="dialogTabPanel" contentStyle="{style.content}" navStyle="{style.maxHeight}" addStyleNames="{style.tabPanel}" height="100%" width="100%">
                 <t:tab>

frontend/webadmin/modules/gwt-common/src/main/java/org/ovirt/engine/ui/common/widget/uicommon/storage/IscsiTargetToLunView.java

@@ -36,6 +36,9 @@ interface ViewUiBinder extends UiBinder<Widget, IscsiTargetToLunView> {
     private boolean hideLeaf;
     private boolean multiSelection;
 
+    private SanTargetFilter sanTargetFilter;
+    private LunFilter leafLunFilter;
+
     private final Driver driver = GWT.create(Driver.class);
 
     public IscsiTargetToLunView(double treeCollapsedHeight, double treeExpandedHeight) {
@@ -53,6 +56,14 @@ public IscsiTargetToLunView(double treeCollapsedHeight, double treeExpandedHeigh
         driver.initialize(this);
     }
 
+    public IscsiTargetToLunView(double treeCollapsedHeight, double treeExpandedHeight,
+                                boolean hideLeaf, boolean multiSelection, SanTargetFilter sanTargetFilter,
+                                LunFilter leafLunFilter) {
+        this(treeCollapsedHeight, treeExpandedHeight, hideLeaf, multiSelection);
+        this.sanTargetFilter = sanTargetFilter;
+        this.leafLunFilter = leafLunFilter;
+    }
+
     @Override
     public void edit(final SanStorageModelBase object) {
         driver.edit(object);
@@ -88,7 +99,8 @@ private void setProposeDiscover(boolean proposeDiscover) {
     void initLists(SanStorageModelBase object) {
         // Create discover panel and storage lists
         iscsiDiscoverTargetsView = new IscsiDiscoverTargetsView();
-        sanStorageTargetToLunList = new SanStorageTargetToLunList(object, hideLeaf, multiSelection);
+        sanStorageTargetToLunList = new SanStorageTargetToLunList(FilteredProxyModel.create(sanTargetFilter, object),
+                hideLeaf, multiSelection, leafLunFilter);
 
         // Add view widgets to panel
         targetsToLunsDiscoverPanel.add(iscsiDiscoverTargetsView);

frontend/webadmin/modules/gwt-common/src/main/java/org/ovirt/engine/ui/common/widget/uicommon/storage/LunFilter.java

@@ -0,0 +1,29 @@
+package org.ovirt.engine.ui.common.widget.uicommon.storage;
+
+import java.util.Collection;
+import java.util.stream.Collectors;
+
+import org.ovirt.engine.ui.uicommonweb.models.storage.LunModel;
+
+/**
+ * LUN model filter.
+ */
+public class LunFilter extends LunFilterBase implements ModelFilter<LunModel> {
+
+    public LunFilter(boolean isHideUsedLuns) {
+        super(isHideUsedLuns);
+    }
+
+    public Collection<LunModel> filter(Collection<LunModel> items) {
+        if (items == null || !needFilter()) {
+            return items;
+        }
+
+        return items.stream().filter(lunModel -> {
+            if (getIsHideUsedLuns()) {
+                return !lunModel.getIsUsed();
+            }
+            return true;
+        }).collect(Collectors.toList());
+    }
+}