org.apache.pulsar.functions.utils.io.Connector Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* 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
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* specific language governing permissions and limitations
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package org.apache.pulsar.functions.utils.io;
import java.nio.file.Path;
import java.util.List;
import org.apache.commons.lang3.StringUtils;
import org.apache.pulsar.common.io.ConfigFieldDefinition;
import org.apache.pulsar.common.io.ConnectorDefinition;
import org.apache.pulsar.functions.utils.FunctionFilePackage;
import org.apache.pulsar.functions.utils.ValidatableFunctionPackage;
public class Connector implements AutoCloseable {
private final Path archivePath;
private final String narExtractionDirectory;
private final boolean enableClassloading;
private ValidatableFunctionPackage connectorFunctionPackage;
private List sourceConfigFieldDefinitions;
private List sinkConfigFieldDefinitions;
private ConnectorDefinition connectorDefinition;
private boolean closed;
public Connector(Path archivePath, ConnectorDefinition connectorDefinition, String narExtractionDirectory,
boolean enableClassloading) {
this.archivePath = archivePath;
this.connectorDefinition = connectorDefinition;
this.narExtractionDirectory = narExtractionDirectory;
this.enableClassloading = enableClassloading;
}
public Path getArchivePath() {
return archivePath;
}
public synchronized ValidatableFunctionPackage getConnectorFunctionPackage() {
checkState();
if (connectorFunctionPackage == null) {
connectorFunctionPackage =
new FunctionFilePackage(archivePath.toFile(), narExtractionDirectory, enableClassloading,
ConnectorDefinition.class);
}
return connectorFunctionPackage;
}
private void checkState() {
if (closed) {
throw new IllegalStateException("Connector is already closed");
}
}
public synchronized List getSourceConfigFieldDefinitions() {
checkState();
if (sourceConfigFieldDefinitions == null && !StringUtils.isEmpty(connectorDefinition.getSourceClass())
&& !StringUtils.isEmpty(connectorDefinition.getSourceConfigClass())) {
sourceConfigFieldDefinitions = ConnectorUtils.getConnectorConfigDefinition(getConnectorFunctionPackage(),
connectorDefinition.getSourceConfigClass());
}
return sourceConfigFieldDefinitions;
}
public synchronized List getSinkConfigFieldDefinitions() {
checkState();
if (sinkConfigFieldDefinitions == null && !StringUtils.isEmpty(connectorDefinition.getSinkClass())
&& !StringUtils.isEmpty(connectorDefinition.getSinkConfigClass())) {
sinkConfigFieldDefinitions = ConnectorUtils.getConnectorConfigDefinition(getConnectorFunctionPackage(),
connectorDefinition.getSinkConfigClass());
}
return sinkConfigFieldDefinitions;
}
public ConnectorDefinition getConnectorDefinition() {
return connectorDefinition;
}
@Override
public synchronized void close() throws Exception {
closed = true;
if (connectorFunctionPackage instanceof AutoCloseable) {
((AutoCloseable) connectorFunctionPackage).close();
}
}
}