org.apache.karaf.features.internal.download.impl.MavenDownloadTask Maven / Gradle / Ivy
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This bundle is the core implementation of the Karaf features support.
/*
* 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.karaf.features.internal.download.impl;
import java.io.File;
import java.io.IOException;
import java.util.concurrent.ScheduledExecutorService;
import org.apache.karaf.util.maven.Parser;
import org.ops4j.pax.url.mvn.MavenResolver;
public class MavenDownloadTask extends AbstractRetryableDownloadTask {
private final MavenResolver resolver;
public MavenDownloadTask(ScheduledExecutorService executor, MavenResolver resolver, String url) {
super(executor, url);
this.resolver = resolver;
}
@Override
public String getUrl() {
try {
// This ensures the version of the artifact is resolved in the returned url
return Parser.pathToMaven(Parser.pathFromMaven(url, getFile().toString()));
} catch (IOException e) {
return super.getUrl();
}
}
@Override
protected File download(Exception previousException) throws Exception {
try {
return resolver.resolve(url, previousException);
} catch (Exception ex) {
//try again with removing timestamp from snapshot
return resolver.resolve(Parser.pathToMaven(Parser.pathFromMaven(url)), previousException);
}
}
/**
* Maven artifact may be looked up in several repositories. Only if exception for each
* repository is not retryable, we won't retry.
* @param e
* @return
*/
@Override
protected Retry isRetryable(IOException e) {
// convert pax-url-aether "retry" to features.core "retry" concept
switch (resolver.isRetryableException(e)) {
case NEVER:
return Retry.NO_RETRY;
case LOW:
case HIGH:
// no need to repeat many times
return Retry.QUICK_RETRY;
case UNKNOWN:
default:
return Retry.DEFAULT_RETRY;
}
}
}