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Source Code for Apache Log4j API
Apache Log4j API provides the interface that applications should code to and provides the adapter components required for implementers to create a logging implementation. Apache Log4j API is a required module to use Apache Log4j.
Bytecode (Java 8) for Apache Log4j API is provided in a separate JAR file like log4j-api-2.14.1.jar.
Source Code files for Apache Log4j API are provided in both binary packge like apache-log4j-2.14.1-bin.zip and source package like apache-log4j-2.14.1-src.zip. You can download them at Apache Log4j Website.
You can also browse Source Code files for Apache Log4j API 2.14.1 below.
✍: FYIcenter.com
⏎ org/apache/logging/log4j/message/MessageFormatMessage.java
/* * 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.logging.log4j.message; import java.io.IOException; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.text.MessageFormat; import java.util.Arrays; import java.util.IllegalFormatException; import java.util.Locale; import org.apache.logging.log4j.Logger; import org.apache.logging.log4j.status.StatusLogger; /** * Handles messages that consist of a format string conforming to java.text.MessageFormat. * * @serial In version 2.1, due to a bug in the serialization format, the serialization format was changed along with * its {@code serialVersionUID} value. */ public class MessageFormatMessage implements Message { private static final Logger LOGGER = StatusLogger.getLogger(); private static final long serialVersionUID = 1L; private static final int HASHVAL = 31; private String messagePattern; private transient Object[] parameters; private String[] serializedParameters; private transient String formattedMessage; private transient Throwable throwable; private final Locale locale; /** * Constructs a message. * * @param locale the locale for this message format * @param messagePattern the pattern for this message format * @param parameters The objects to format * @since 2.6 */ public MessageFormatMessage(final Locale locale, final String messagePattern, final Object... parameters) { this.locale = locale; this.messagePattern = messagePattern; this.parameters = parameters; final int length = parameters == null ? 0 : parameters.length; if (length > 0 && parameters[length - 1] instanceof Throwable) { this.throwable = (Throwable) parameters[length - 1]; } } /** * Constructs a message. * * @param messagePattern the pattern for this message format * @param parameters The objects to format */ public MessageFormatMessage(final String messagePattern, final Object... parameters) { this(Locale.getDefault(Locale.Category.FORMAT), messagePattern, parameters); } /** * Returns the formatted message. * @return the formatted message. */ @Override public String getFormattedMessage() { if (formattedMessage == null) { formattedMessage = formatMessage(messagePattern, parameters); } return formattedMessage; } /** * Returns the message pattern. * @return the message pattern. */ @Override public String getFormat() { return messagePattern; } /** * Returns the message parameters. * @return the message parameters. */ @Override public Object[] getParameters() { if (parameters != null) { return parameters; } return serializedParameters; } protected String formatMessage(final String msgPattern, final Object... args) { try { final MessageFormat temp = new MessageFormat(msgPattern, locale); return temp.format(args); } catch (final IllegalFormatException ife) { LOGGER.error("Unable to format msg: " + msgPattern, ife); return msgPattern; } } @Override public boolean equals(final Object o) { if (this == o) { return true; } if (o == null || getClass() != o.getClass()) { return false; } final MessageFormatMessage that = (MessageFormatMessage) o; if (messagePattern != null ? !messagePattern.equals(that.messagePattern) : that.messagePattern != null) { return false; } return Arrays.equals(serializedParameters, that.serializedParameters); } @Override public int hashCode() { int result = messagePattern != null ? messagePattern.hashCode() : 0; result = HASHVAL * result + (serializedParameters != null ? Arrays.hashCode(serializedParameters) : 0); return result; } @Override public String toString() { return getFormattedMessage(); } private void writeObject(final ObjectOutputStream out) throws IOException { getFormattedMessage(); out.writeUTF(formattedMessage); out.writeUTF(messagePattern); final int length = parameters == null ? 0 : parameters.length; out.writeInt(length); serializedParameters = new String[length]; if (length > 0) { for (int i = 0; i < length; i++) { serializedParameters[i] = String.valueOf(parameters[i]); out.writeUTF(serializedParameters[i]); } } } private void readObject(final ObjectInputStream in) throws IOException { parameters = null; throwable = null; formattedMessage = in.readUTF(); messagePattern = in.readUTF(); final int length = in.readInt(); serializedParameters = new String[length]; for (int i = 0; i < length; ++i) { serializedParameters[i] = in.readUTF(); } } /** * Return the throwable passed to the Message. * * @return the Throwable. */ @Override public Throwable getThrowable() { return throwable; } }
⏎ org/apache/logging/log4j/message/MessageFormatMessage.java
Or download all of them as a single archive file:
File name: log4j-api-2.14.1-sources.jar File size: 264773 bytes Release date: 2021-03-06 Download
⇒ Source Code for Apache Log4j Core Implementation
⇐ Downloading Apache Log4j Binary Package
2015-11-17, 36228👍, 0💬
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