Java tutorial
/* * Copyright (c) 2010-2016 Evolveum * * Licensed 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.evolveum.midpoint.web.page.admin.resources; import com.evolveum.midpoint.gui.api.model.NonEmptyLoadableModel; import com.evolveum.midpoint.prism.PrismObject; import com.evolveum.midpoint.schema.result.OperationResult; import com.evolveum.midpoint.schema.util.ObjectTypeUtil; import com.evolveum.midpoint.security.api.AuthorizationConstants; import com.evolveum.midpoint.task.api.Task; import com.evolveum.midpoint.util.SystemUtil; import com.evolveum.midpoint.util.exception.CommonException; import com.evolveum.midpoint.util.logging.LoggingUtils; import com.evolveum.midpoint.util.logging.Trace; import com.evolveum.midpoint.util.logging.TraceManager; import com.evolveum.midpoint.web.application.AuthorizationAction; import com.evolveum.midpoint.web.application.PageDescriptor; import com.evolveum.midpoint.web.component.AjaxSubmitButton; import com.evolveum.midpoint.web.component.form.Form; import com.evolveum.midpoint.web.component.util.VisibleEnableBehaviour; import com.evolveum.midpoint.web.page.admin.PageAdmin; import com.evolveum.midpoint.web.page.admin.resources.dto.ResourceVisualizationDto; import com.evolveum.midpoint.web.util.MidPointPageParametersEncoder; import com.evolveum.midpoint.xml.ns._public.common.common_3.ResourceType; import org.apache.commons.configuration.Configuration; import org.apache.wicket.ajax.AjaxRequestTarget; import org.apache.wicket.markup.html.WebMarkupContainer; import org.apache.wicket.markup.html.basic.Label; import org.apache.wicket.markup.html.form.TextArea; import org.apache.wicket.model.AbstractReadOnlyModel; import org.apache.wicket.model.IModel; import org.apache.wicket.model.PropertyModel; import org.jetbrains.annotations.NotNull; import java.io.IOException; /** * @author mederly */ @PageDescriptor(url = "/admin/resources/visualization", encoder = MidPointPageParametersEncoder.class, action = { @AuthorizationAction(actionUri = PageAdminResources.AUTH_RESOURCE_ALL, label = PageAdminResources.AUTH_RESOURCE_ALL_LABEL, description = PageAdminResources.AUTH_RESOURCE_ALL_DESCRIPTION), @AuthorizationAction(actionUri = AuthorizationConstants.AUTZ_UI_RESOURCE_EDIT_URL, label = "PageResourceWizard.auth.resource.label", description = "PageResourceWizard.auth.resource.description") }) public class PageResourceVisualization extends PageAdmin { private static final Trace LOGGER = TraceManager.getTrace(PageResourceVisualization.class); private static final String DOT_CONFIGURATION = "midpoint.dot"; private static final String RENDERER = "renderer"; private static final String DEFAULT_RENDERER = "dot"; private static final String ID_FORM = "form"; private static final String ID_DOT_CONTAINER = "dotContainer"; private static final String ID_DOT = "dot"; private static final String ID_ERROR = "error"; private static final String ID_SVG = "svg"; private static final String ID_BACK = "back"; private static final String OPERATION_EXPORT_DATA_MODEL = PageResourceVisualization.class.getName() + ".exportDataModel"; @NotNull private final PrismObject<ResourceType> resourceObject; @NotNull private final NonEmptyLoadableModel<ResourceVisualizationDto> visualizationModel; public PageResourceVisualization(@NotNull PrismObject<ResourceType> resourceObject) { this.resourceObject = resourceObject; this.visualizationModel = new NonEmptyLoadableModel<ResourceVisualizationDto>(false) { @NotNull @Override protected ResourceVisualizationDto load() { return loadVisualizationDto(); } }; initLayout(); } @Override protected IModel<String> createPageTitleModel() { return new AbstractReadOnlyModel<String>() { @Override public String getObject() { return getString("PageResourceVisualization.title", resourceObject.getName()); } }; } @NotNull private ResourceVisualizationDto loadVisualizationDto() { Task task = createSimpleTask(OPERATION_EXPORT_DATA_MODEL); OperationResult result = task.getResult(); String dot; try { resourceObject.revive(getPrismContext()); dot = getModelDiagnosticService().exportDataModel(resourceObject.asObjectable(), task, result); } catch (CommonException | RuntimeException e) { LoggingUtils.logUnexpectedException(LOGGER, "Couldn't export the data model for {}", e, ObjectTypeUtil.toShortString(resourceObject)); showResult(result); throw redirectBackViaRestartResponseException(); } String renderer = DEFAULT_RENDERER; Configuration dotConfig = getMidpointConfiguration().getConfiguration(DOT_CONFIGURATION); if (dotConfig != null) { renderer = dotConfig.getString(RENDERER, renderer); } renderer += " -Tsvg"; StringBuilder output = new StringBuilder(); try { SystemUtil.executeCommand(renderer, dot, output); return new ResourceVisualizationDto(dot, output.toString(), null); } catch (IOException | RuntimeException e) { LoggingUtils.logUnexpectedException(LOGGER, "Couldn't execute SVG renderer command: {}", e, renderer); return new ResourceVisualizationDto(dot, null, e); } } private void initLayout() { Form form = new Form(ID_FORM); add(form); WebMarkupContainer dotContainer = new WebMarkupContainer(ID_DOT_CONTAINER); dotContainer.add(new VisibleEnableBehaviour() { @Override public boolean isVisible() { return visualizationModel.getObject().getSvg() == null; } }); form.add(dotContainer); TextArea<String> dot = new TextArea<>(ID_DOT, new PropertyModel<String>(visualizationModel, ResourceVisualizationDto.F_DOT)); dotContainer.add(dot); Label error = new Label(ID_ERROR, new PropertyModel<String>(visualizationModel, ResourceVisualizationDto.F_EXCEPTION_AS_STRING)); dotContainer.add(error); Label svg = new Label(ID_SVG, new PropertyModel<String>(visualizationModel, ResourceVisualizationDto.F_SVG)); svg.setEscapeModelStrings(false); svg.add(new VisibleEnableBehaviour() { @Override public boolean isVisible() { return visualizationModel.getObject().getSvg() != null; } }); form.add(svg); AjaxSubmitButton back = new AjaxSubmitButton(ID_BACK) { @Override public void onSubmit(AjaxRequestTarget ajaxRequestTarget, org.apache.wicket.markup.html.form.Form<?> form) { redirectBack(); } @Override protected void onError(AjaxRequestTarget target, org.apache.wicket.markup.html.form.Form<?> form) { target.add(getFeedbackPanel()); } }; form.add(back); } }