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// Copyright 2020 Oath Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.container.core.config;
import com.yahoo.config.FileReference;
import com.yahoo.filedistribution.fileacquirer.FileAcquirer;
import com.yahoo.osgi.Osgi;
import org.osgi.framework.Bundle;
import java.io.File;
import java.nio.file.Files;
import java.util.List;
import java.util.concurrent.TimeUnit;
import java.util.logging.Logger;
/**
* Retrieves bundles with file distribution, and installs them to the OSGi framework.
*
* @author gjoranv
*/
public class FileAcquirerBundleInstaller {
private static final Logger log = Logger.getLogger(FileAcquirerBundleInstaller.class.getName());
private final FileAcquirer fileAcquirer;
public FileAcquirerBundleInstaller(FileAcquirer fileAcquirer) {
this.fileAcquirer = fileAcquirer;
}
public List<Bundle> installBundles(FileReference reference, Osgi osgi) throws InterruptedException {
File file = fileAcquirer.waitFor(reference, 7, TimeUnit.DAYS);
if (notReadable(file)) {
// Wait a few sec in case FileAcquirer returns right before the file is actually ready.
// This happened on rare occasions due to a (fixed) bug in file distribution.
log.warning("Unable to open bundle file with reference '" + reference + "'. Waiting for up to 5 sec.");
int retries = 0;
while (notReadable(file) && retries < 10) {
Thread.sleep(500);
retries++;
}
if (notReadable(file)) {
com.yahoo.protect.Process.logAndDie("Shutting down - unable to read bundle file with reference '" +
reference + "' and path " + file.getAbsolutePath());
}
}
return osgi.install(file.getAbsolutePath());
}
public boolean hasFileDistribution() {
return fileAcquirer != null;
}
private static boolean notReadable(File file) {
return ! Files.isReadable(file.toPath());
}
}
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