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Utilities for debugging, profiling and code coverage measure for UDFs.

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package com.exasol.udfdebugging.modules.debugging;

import java.net.InetSocketAddress;
import java.util.stream.Stream;

import com.exasol.udfdebugging.LocalServiceExposer;
import com.exasol.udfdebugging.Module;

/**
 * This module configures a Java-UDF execution so that it connects to a remote debugger.
 */
public class DebuggingModule implements Module {
    /** Port the remote-debugger listens on */
    public static final int DEBUGGING_PORT = 8000;
    private final LocalServiceExposer localServiceExposer;

    /**
     * Create a new instance of {@link DebuggingModule}.
     * 
     * @param localServiceExposer Proxy factory that makes ports of the test host available in the container
     */
    public DebuggingModule(final LocalServiceExposer localServiceExposer) {
        this.localServiceExposer = localServiceExposer;
    }

    @Override
    public Stream getJvmOptions() {
        final InetSocketAddress proxyForHostPort = this.localServiceExposer
                .exposeLocalServiceToDatabase(DEBUGGING_PORT);
        return Stream.of("-agentlib:jdwp=transport=dt_socket,server=n,address=" + proxyForHostPort.getHostName() + ":"
                + proxyForHostPort.getPort() + ",suspend=y");
    }

    @Override
    public void close() {
        // nothing to close
    }
}