Application instrumentation code extension

A method for monitoring performance of an application using a code extension, the method being performed by at least one processor, the method comprising:

• generating performance data about an execution of an application executing on a server according to an instrumentation file, including intercepting methods specified by the instrumentation file, interjecting code at the methods specified by the instrumentation file, and monitoring the methods specified by the instrumentation file;
• adding a code extension to a resource file, the code extension configured to modify an application flow of the application during runtime of the application and extend the generation of the performance data to generate supplemental performance data regarding the execution of the application;
• updating the instrumentation file to include code extension information, the code extension information including identification information that identifies the code extension and location information that identifies a location of the code extension in the resource file;
• determining that the execution of the application is associated with the code extension, based on the code extension information;
• loading the code extension from the resource file into the application without restarting the application, in response to the determining that the execution of the application is associated with the code extension;
• and
• generating supplemental performance data regarding the execution of the application as specified by the code extension.

A non-transitory computer-readable medium storing instructions that when executed cause at least one processor to:

• generate performance data about an execution of an application executing on a server according to an instrumentation file in response to a server request issued by a client computing device, including intercepting methods specified by the instrumentation file, interjecting code at the methods specificied by the instrumentation file, and monitoring the methods specified by the instrumentation file;
• add a code extension to a resource file, the code extension configured to modify an application flow of the application during runtime of the application and extend the generation of the performance data to generate supplemental performance data regarding the execution of the application;
• add a code extension to a resource file, the code extension configured to modify an application flow of the application during runtime of the application and extend the generation of the performance data to generate supplemental performance data regarding the execution of the application;
• update the instrumentation file to include code extension information, the code extension information including identification information that identifies the code extension and location information that identifies a location of the code extension in the resource file;
• determine that the execution of the application is associated with the code extension, based on the code extension information;
• load the code extension from the resource file into the application without restarting the application, in response to the determining that the execution of the application is associated with the code extension;
• and
• generate the supplemental performance data regarding the execution of the application as specified by the code extension.