| /* |
| * Copyright (c) OSGi Alliance (2016, 2017). All Rights Reserved. |
| * |
| * 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 org.osgi.service.log.admin; |
| |
| import java.util.Map; |
| |
| import org.osgi.annotation.versioning.ProviderType; |
| import org.osgi.service.log.LogLevel; |
| |
| /** |
| * Logger Context for a bundle. |
| * <p> |
| * Any change to the configuration of this Logger Context must be effective |
| * immediately for all loggers that would rely upon the configuration of this |
| * Logger Context. |
| * |
| * @ThreadSafe |
| * @author $Id$ |
| */ |
| @ProviderType |
| public interface LoggerContext { |
| /** |
| * Logger Context PID. |
| * <p> |
| * If Configuration Admin is present, Logger Context configuration |
| * information in Configuration Admin must be used. The name of the Logger |
| * Context is mapped to a Configuration Admin targeted PID as follows: |
| * <ul> |
| * <li>The root Logger Context, which has no name, is mapped to the PID |
| * {@code org.osgi.service.log.admin}.</li> |
| * <li>A named Logger Context is mapped to a targeted PID by prefixing the |
| * Logger Context's name with {@code org.osgi.service.log.admin|}. For |
| * example, the Logger Context named {@code com.foo.bar} is mapped to the |
| * targeted PID {@code org.osgi.service.log.admin|com.foo.bar}.</li> |
| * </ul> |
| */ |
| String LOGGER_CONTEXT_PID = "org.osgi.service.log.admin"; |
| |
| /** |
| * Framework launching property specifying the default log level of the root |
| * Logger Context. |
| * <p> |
| * The value of this property must be the name of the one of the |
| * {@link LogLevel}s. |
| * <p> |
| * If not specified, or the specified value is not the name of the one of |
| * the {@link LogLevel}s, the default log level of the root Logger Context |
| * is {@link LogLevel#WARN}. |
| * |
| * @see LogLevel |
| */ |
| String LOGGER_CONTEXT_DEFAULT_LOGLEVEL = "org.osgi.service.log.admin.loglevel"; |
| |
| /** |
| * Returns the name for this Logger Context. |
| * |
| * @return The name for this Logger Context. The root Logger Context has no |
| * name and returns {@code null}. |
| */ |
| String getName(); |
| |
| /** |
| * Returns the effective log level of the logger name in this Logger |
| * Context. |
| * <p> |
| * The effective log level for a logger name is found by the following |
| * steps: |
| * <ol> |
| * <li>If the specified logger name is configured with a log level, return |
| * the configured log level.</li> |
| * <li>For each ancestor logger name of the specified logger name, if the |
| * ancestor logger name is configured with a log level, return the |
| * configured log level.</li> |
| * <li>If this Logger Context is named, return the result of calling this |
| * method on the root Logger Context with the specified logger name.</li> |
| * <li>If this Logger Context is the root Logger Context, return the |
| * {@link #LOGGER_CONTEXT_DEFAULT_LOGLEVEL default log level of the root |
| * Logger Context}.</li> |
| * </ol> |
| * |
| * @param name The logger name. |
| * @return The effective log level of the logger name in this Logger |
| * Context. |
| */ |
| LogLevel getEffectiveLogLevel(String name); |
| |
| /** |
| * Returns the configured log levels for this Logger Context. |
| * |
| * @return The configured log levels for this Logger Context. The keys are |
| * the logger names and the values are the log levels. The returned |
| * map may be empty if no logger names are configured for this |
| * Logger Context. The returned map is the property of the caller |
| * who can modify the map and use it as input to |
| * {@link #setLogLevels(Map)}. The returned map must support all |
| * optional Map operations. |
| */ |
| Map<String,LogLevel> getLogLevels(); |
| |
| /** |
| * Configure the log levels for this Logger Context. |
| * <p> |
| * All previous log levels configured for this Logger Context are cleared |
| * and then the log levels in the specified map are configured. |
| * <p> |
| * The configured log levels for this Logger Context can be set by both this |
| * method and by configuration information in Configuration Admin, if |
| * Configuration Admin is present. The configured log levels for this Logger |
| * Context are based upon the last technique used to update the configured |
| * log levels. This method must not modify or set configuration information |
| * in Configuration Admin. |
| * |
| * @param logLevels The log levels to configure for this Logger Context. The |
| * keys are the logger names and the values are the log levels. |
| * The specified map is the property of the caller and this |
| * method must not modify or retain the specified map. |
| */ |
| void setLogLevels(Map<String,LogLevel> logLevels); |
| |
| /** |
| * Clear the configuration of this Logger Context. |
| * <p> |
| * The configured log levels will be cleared. |
| */ |
| void clear(); |
| |
| /** |
| * Returns whether the configuration of this Logger Context is empty. |
| * |
| * @return {@code true} if this Logger Context has no configuration. That |
| * is, the configured log levels are empty. Otherwise {@code false} |
| * is returned. |
| */ |
| boolean isEmpty(); |
| } |