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== Instrumenting Coopshim with OML ==

The coopshim application is written in Python. After verifying that it works, we used the instructions [https://pypi.python.org/pypi/oml4py/ oml4py] library homepage to instrument the script. We set up three ''measurement points'' (database tables)  in the script:

 * ''req'' - used to store information about requests between nodes
 * ''recv'' - used to store information about recovered packets between nodes
 * ''sent'' - used to store information about recovery packets sent from nodes


{{{
#!python 
#!/usr/bin/python
}}}

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> Note: In addition to the [https://pypi.python.org/pypi/oml4py/ oml4py] module for Python, there is also the [http://rubydoc.info/gems/oml4r/ oml4r] gem for instrumenting Python applications, and a [https://mytestbed.net/projects/oml/wiki/Client_Programming C library] for C/C++ applications. There is also a [http://mytestbed.net/projects/oml/wiki/Description_of_Text_protocol text protocol] which can be used with any language.

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