Custom tracers using oss java agents

A tangible, non-transitory, computer-readable medium storing program instructions that cause a device to execute a process comprising:

• obtaining a class loader of a primary agent process by identifying a parent loader of an extension loader in which a custom agent extension operates;
• mapping shaded class names used by the primary agent process by inspecting a primary JAR file for classes required for the custom agent extension;
• creating a custom compilation JAR by renaming classdata files of the primary JAR file to class files and repackaging the class files into the custom compilation JAR;
• compiling the custom agent extension using the custom compilation JAR to reference the shaded class names;
• implementing a runtime class loading delegation mechanism, wherein the custom agent extension dynamically resolves required classes from the class loader of the primary agent process;
• and
• utilizing the shaded class names to create and register a custom tracer within the custom agent extension, wherein the custom tracer operates independently of the primary agent process and a primary tracer and exporter of the primary agent process.

An apparatus, comprising:

• one or more network interfaces to communicate with a network;
• a processor coupled to the one or more network interfaces and configured to execute one or more processes;
• and
• a memory configured to store a process that is executable by the processor, the process comprising:
• obtaining a class loader of a primary agent process by identifying a parent loader of an extension loader in which a custom agent extension operates;
• mapping shaded class names used by the primary agent process by inspecting a primary JAR file for classes required for the custom agent extension;
• creating a custom compilation JAR by renaming classdata files of the primary JAR file to class files and repackaging the class files into the custom compilation JAR;
• compiling the custom agent extension using the custom compilation JAR to reference the shaded class names;
• implementing a runtime class loading delegation mechanism, wherein the custom agent extension dynamically resolves required classes from the class loader of the primary agent process;
• and
• utilizing the shaded class names to create and register a custom tracer within the custom agent extension, wherein the custom tracer operates independently of the primary agent process and a primary tracer and exporter of the primary agent process.