org.apache.activemq.artemis.shaded.io.netty.handler.codec.compression.Brotli Maven / Gradle / Ivy
/*
* Copyright 2021 The Netty Project
*
* The Netty Project 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:
*
* https://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.activemq.artemis.shaded.io.netty.handler.codec.compression;
import com.aayushatharva.brotli4j.Brotli4jLoader;
import org.apache.activemq.artemis.shaded.io.netty.util.internal.PlatformDependent;
import org.apache.activemq.artemis.shaded.io.netty.util.internal.logging.InternalLogger;
import org.apache.activemq.artemis.shaded.io.netty.util.internal.logging.InternalLoggerFactory;
public final class Brotli {
private static final InternalLogger logger = InternalLoggerFactory.getInstance(Brotli.class);
private static final ClassNotFoundException CNFE;
private static Throwable cause;
static {
ClassNotFoundException cnfe = null;
try {
Class.forName("com.aayushatharva.brotli4j.Brotli4jLoader", false,
PlatformDependent.getClassLoader(Brotli.class));
} catch (ClassNotFoundException t) {
cnfe = t;
logger.debug(
"brotli4j not in the classpath; Brotli support will be unavailable.");
}
CNFE = cnfe;
// If in the classpath, try to load the native library and initialize brotli4j.
if (cnfe == null) {
cause = Brotli4jLoader.getUnavailabilityCause();
if (cause != null) {
logger.debug("Failed to load brotli4j; Brotli support will be unavailable.", cause);
}
}
}
/**
*
* @return true when brotli4j is in the classpath
* and native library is available on this platform and could be loaded
*/
public static boolean isAvailable() {
return CNFE == null && Brotli4jLoader.isAvailable();
}
/**
* Throws when brotli support is missing from the classpath or is unavailable on this platform
* @throws Throwable a ClassNotFoundException if brotli4j is missing
* or a UnsatisfiedLinkError if brotli4j native lib can't be loaded
*/
public static void ensureAvailability() throws Throwable {
if (CNFE != null) {
throw CNFE;
}
Brotli4jLoader.ensureAvailability();
}
/**
* Returns {@link Throwable} of unavailability cause
*/
public static Throwable cause() {
return cause;
}
private Brotli() {
}
}