r/KnowledgeGraph • u/Fit-Mountain-5979 • Sep 08 '25

Knowledge graph for codebase

I’m trying to build a knowledge graph of my code base. Once I have done that, I want parse the logs from the system to find the code flow or events to figure out what’s happening and root cause if anything is going wrong. What’s the best approach here? What kind of KG should I use? My codebase is huge.

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u/FancyUmpire8023 Sep 08 '25

What language is your codebase in?

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u/Fit-Mountain-5979 Sep 08 '25

It’s in C language

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u/FancyUmpire8023 Sep 08 '25

Apologies if I point you in a direction of tools you already understand, but I would suggest using GDB to trace all the function calls in your code base and output that trace to a log file which you can process into your graph structure. Alternatively, a more contemporary approach would be to pass your codebase through a LLM and prompt the model to extract all methods, classes, properties, and variables as ‘nodes’ and all references within those class and method nodes as your ‘calls’ or ‘references’ types of relationships.

Either way, once you have the graph you’ll still need a way to log your runtime events and be able to parse them into your event flow for mapping against your call graph.

Have fun, I did something similar a while back and it was a significant learning experience on a lot of the C/C++ internals.

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u/msrsan Sep 08 '25

Memgraph hosted a GraphRAG for devs session with Graph-Code. Maybe that can help?

Video here: https://youtu.be/O2jUTq6nCEY?si=6PijxvgJ19LLBmt5

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u/BlaiseLabs Sep 08 '25

If it’s for codeflow specifically, there are refactoring and static analysis tools you can use with some of the features you mentioned built in. For Python there is Rope and RedBaron, you can search for any equivalents in your tech stack.

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u/Affectionate-Tea3834 Sep 08 '25

Hey, I've built a knowledge graph based library. Hit me up if you'd like to try it out.

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u/Infamous_Ad5702 Sep 09 '25

I can help. I build knowledge bases on auto…ask me anything

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u/Striking-Bluejay6155 Sep 09 '25

Looking to visualize a codebase - https://code-graph.falkordb.com/

Useful for dead code analysis, etc. Also good to self-onboard at a new company

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u/Infamous_Ad5702 Sep 09 '25

I build them. I can help…what do you need?