A groovy template for SimpleTemplateEngine that creates a btrace Java source file

gistfile1.java

import java.util.Map;
import static com.sun.btrace.BTraceUtils.*;
import com.sun.btrace.annotations.*;

@BTrace
public class ManyMethodTimerTemplate {
    @TLS private static Map<String, Long> startTimes = newHashMap();

	<% targetClasses.eachWithIndex { className, classData, classIndex -> %>
		<% classData.targetMethods.eachWithIndex { targetMethod, methodIndex -> %>
		
		    @OnMethod(clazz = "$className", method = "$targetMethod")
		    public static void start_${classIndex}_${methodIndex}() {
		        put(startTimes, "$className", timeMillis());
		        println(strcat(strcat(strcat(strcat(strcat("entered|", name(probeClass())), "|"), probeMethod()), "|"),
		                str(get(startTimes, "$className"))));
		    }
		
		    @OnMethod(clazz = "$className", method = "$targetMethod", location = @Location(where = Where.BEFORE, value = Kind.RETURN))
		    public static void end_${classIndex}_${methodIndex}() {
		        long endtime = timeMillis();
		        String duration = str(endtime - get(startTimes, "$className"));
		        println(strcat(strcat(strcat(strcat(strcat(strcat(strcat(strcat("completed|", name(probeClass())), "|"), probeMethod()),
		                "|"), str(endtime)), "|"), duration), "|"));
		    }
	
		<% } %>
	<% } %>
	
}