| /* |
| * 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.felix.inventory; |
| |
| import java.io.PrintWriter; |
| |
| /** |
| * The <code>InventoryPrinter</code> is a service interface to be |
| * implemented by providers which want to hook into the display of the |
| * current configuration and state of the OSGi framework and application. |
| * <p> |
| * The following service registration properties further declare the |
| * {@code InventoryPrinter} service: |
| * <ul> |
| * <li>{@link #FORMAT} - the supported formats</li> |
| * <li>{@link #TITLE} - the printer title</li> |
| * <li>{@link #NAME} - the printer name</li> |
| * <li>{@link #WEBCONSOLE} - whether to confine the printer to the Web Console</li> |
| * </ul> |
| */ |
| public interface InventoryPrinter |
| { |
| |
| /** |
| * The service name under which services of this class must be registered |
| * to be picked for inclusion in the configuration report. |
| */ |
| String SERVICE = "org.apache.felix.inventory.InventoryPrinter"; //$NON-NLS-1$ |
| |
| /** |
| * The property defining one or more supported formats. The value of this |
| * property is either a string, a string array or a Collection<String> |
| * containing valid names of the constants defined in the {@link Format} |
| * class. |
| * <p> |
| * Any unknown formats are ignored. If this property is not declared or does |
| * not declare any known formats, the {@link Format#TEXT} format is assumed |
| * as the printer's supported format. |
| */ |
| String FORMAT = "felix.inventory.printer.format"; //$NON-NLS-1$ |
| |
| /** |
| * The unique name (or label) of the printer. |
| * <p> |
| * If this property is missing or an empty string, the name is constructed |
| * from the string {@code InventoryPrinter} and the service's |
| * {@code service.id} property. |
| */ |
| String NAME = "felix.inventory.printer.name"; //$NON-NLS-1$ |
| |
| /** |
| * The title displayed by tools when this printer is used. It should be |
| * descriptive but short. |
| * <p> |
| * If this property is missing or an empty string, the {@link #NAME} value |
| * is used as the title. |
| */ |
| String TITLE = "felix.inventory.printer.title"; //$NON-NLS-1$ |
| |
| /** |
| * The inventory printer feature has first class integration with the |
| * Apache Felix Web Console. This service registration property can be used |
| * to hide an inventory printer service from the Web Console. The service |
| * will still be called to generate the single file or ZIP file output of |
| * inventory printers. |
| * <p> |
| * By default, a printer is displayed in the web console, unless this |
| * property is set to {@code false}. The property value can either be a |
| * boolean or a string. |
| */ |
| String WEBCONSOLE = "felix.inventory.printer.webconsole"; //$NON-NLS-1$ |
| |
| /** |
| * Prints the configuration report to the given <code>printWriter</code>. |
| * Implementations are free to print whatever information they deem useful. |
| * <p> |
| * If a printer is invoked with a format it doesn't support ( {@link #FORMAT}) |
| * the printer should just do/print nothing and directly return. |
| * <p> |
| * A printer might be used in one of two different situations: either for |
| * directly displaying the information to a user (like in the web console) |
| * or the output is included in a ZIP. The printer might want to return |
| * different output depending on the usage situation. |
| * |
| * @param printWriter where to write the data. Implementations may flush the |
| * writer but must not close it. |
| * @param format The render format. |
| * @param isZip whether this is included in a ZIP file or used directly |
| */ |
| void print(PrintWriter printWriter, Format format, boolean isZip); |
| } |