Cisco Technology, Inc.

Appdynamics, Inc.

Anthony Kilman

Haojun Li

Ryan Nicholas TerBush

Brad Winslow

A system for preforming mid-method instrumentation includes a processor; a memory; and one or more modules stored in the memory and executable by a processor to perform operations including: obtain bytecode representation of an application; identify a method in the bytecode including a beginning and an end of the method; identify lines of bytecode between the beginning and the end of the identified method; identify one or more of the lines of bytecode between the beginning and the end of the method to instrument with one or more interceptors; during runtime of the application, instrument the identified one or more of the lines of bytecode between the beginning and the end of the identified method by apply the one or more interceptors; and during the runtime of the application, receive information associated with the instrumented one or more lines of bytecode between the beginning and the end of the method.

Mid-method instrumentation

A system for performing mid-method instrumentation includes a processor; a memory; and one or more modules stored in the memory and executable by a processor to perform operations including: obtain bytecode representation of an application; identify a method in the bytecode including a beginning and an end of the method; identify lines of bytecode between the beginning and the end of the identified method; identify one or more of the lines of bytecode between the beginning and the end of the method to instrument with one or more interceptors; during runtime of the application, instrument the identified one or more of the lines of bytecode between the beginning and the end of the identified method by apply the one or more interceptors; and during the runtime of the application, receive information associated with the instrumented one or more lines of bytecode between the beginning and the end of the method.

A dynamic service module is embedded in an agent and able to add functionality to the agent. The service module may manage .jar files for execution by the agent. The service module may receive the .jar files, provide them to an agent for execution, and may perform other functions. The agent may perform obfuscation in order to translate the .jar files into a modified version which may be more compatible with a particular agent. Once execution of the .jar file is complete, the agent may remove the .jar file as well as all trace of the .jar file. For example, the agent may remove byte code instrumentation that was installed as a result of the .jar file.

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Anthony Kilman