Monitoring an application in a process virtual machine
View Patent ↗An application that runs in a process virtual machine is monitored by injecting listening code into a target class of the application. The listening code collects and forwards data to a monitoring agent. The target class is configured for monitoring according to alternative embodiments. In response to the process virtual machine providing notification of an event, such a loading the target class, the listening code may be injected into the target class. In another embodiment, the process virtual machine is configured to load a first minor class containing a minor entry point to the application. A mirror target class is loaded in response to a request to load the target class. The minor target class contains a minor entry point to the target class and the listening code. In another embodiment, listening code may be added to the target class before running the application.
1. A system for monitoring an application executing on a process virtual machine, the system comprising:
a memory to store a monitoring agent, the process virtual machine, and the application; and
a processor to:
run the monitoring agent, the process virtual machine, and the application;
receive an identification of a target class of the application by the monitoring agent;
configure the target class for monitoring by
injecting listening code into the target class to generate a first minor class, wherein the first mirror class includes a minor entry point to the application, a mirror entry point to the target class and at least a sequence of computer executable code, including the listening code, not present computer executable code of the target class,
integrating the first mirror class into the application, and
configuring the process virtual machine to use a first class loader to load the first mirror class;
load the first mirror class in response to a request to load the target class;
run, subsequent to loading the first mirror class, the listening code, wherein the listening code executes within the first mirror class integrated into the application to collect data and to send the collected data directly to the monitoring agent; and
send the collected data from the monitoring agent to a collector, wherein the collector is operable to analyze the collected data to identify an unauthorized access to the application.
2. The system of claim 1 , wherein the configuring of the target class for monitoring by listening code includes:
configuring the process virtual machine to provide a notification of an event concerning the target class; and
installing the listening code in the target class in response to the notification of the event.
3. The system of claim 2 , wherein the event is related to circumstances associated with a level of risk and the event occurs after the target class has been loaded.
4. The system of claim 1 , wherein the configuring the target class for monitoring by listening code includes:
injecting listening virtual machine code to the target class before running the application.
5. The system of claim 1 , further comprising serializing the collected data by the monitoring agent.
6. The system of claim 1 , wherein the collected data includes a value returned by a target method of the target class.