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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.container.di;
import com.yahoo.config.subscription.ConfigSource;
import com.yahoo.config.subscription.DirSource;
import com.yahoo.config.subscription.FileSource;
import org.junit.jupiter.api.Assertions;
import java.io.File;
import java.io.IOException;
import java.io.UncheckedIOException;
import java.nio.file.Files;
import java.util.HashSet;
import java.util.Set;
import static org.junit.jupiter.api.Assertions.assertTrue;
/**
* @author Tony Vaagenes
* @author gjoranv
* @author ollivir
*/
class DirConfigSource {
private final Set<String> checked = new HashSet<>();
private final File tempFolder;
private boolean doubleChecked;
DirConfigSource(File tmpDir) {
this.tempFolder = tmpDir;
}
void writeConfig(String name, String contents) {
try {
Files.writeString(tempFolder.toPath().resolve(name + ".cfg"), contents);
}
catch (IOException e) {
throw new UncheckedIOException(e);
}
}
String configId() {
return "dir:" + tempFolder.getPath();
}
synchronized void clearCheckedConfigs() {
checked.clear();
doubleChecked = false;
}
synchronized void awaitConfigChecked(long millis) throws InterruptedException {
long remaining, doom = System.currentTimeMillis() + millis;
while ( ! doubleChecked && (remaining = doom - System.currentTimeMillis()) > 0) wait(remaining);
assertTrue(doubleChecked, "some config should be checked more than once during " + millis + " millis; checked ones: " + checked);
}
ConfigSource configSource() {
return new DirSource(tempFolder) {
@Override public FileSource getFile(String name) {
return new FileSource(new File(tempFolder, name)) {
@Override public long getLastModified() {
synchronized (DirConfigSource.this) {
if ( ! checked.add(name)) {
doubleChecked = true;
DirConfigSource.this.notifyAll();
}
return super.getLastModified();
}
}
};
}
};
}
}
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