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galaxy/doc/source/dev/debugging_galaxy.md
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# Debugging Galaxy
## Debugging Galaxy in VS Code
The following instructions assume that you have cloned your Galaxy fork into the
`~/galaxy` directory and have created a VS Code workspace per instructions
[here](./debugging_tests.md). Additionally, we assume you have configured
Galaxy and are using `~/galaxy/config/galaxy.yml` as your galaxy configuration
file (so, not the default .sample). If you are still using the default
configuration, simply `cp config/galaxy.yml.sample config/galaxy.yml` and it
should work fine.
1. Add the following code snippet to `~/galaxy/.vscode/launch.json` (create the file if it does not already exist)
```
{
"version": "0.2.0",
"configurations": [
{
"name": "Python: Current File (Integrated Terminal)",
"type": "python",
"request": "launch",
"program": "${file}",
"console": "integratedTerminal"
},
{
"name": "GalaxyFastAPI uvicorn",
"type": "python",
"request": "launch",
"module": "uvicorn",
"args": ["--app-dir", "lib", "--factory", "galaxy.webapps.galaxy.fast_factory:factory"],
"env": {
"GALAXY_CONFIG_FILE": "${workspaceFolder}/config/galaxy.yml"
}
},
]
}
```
2. Re-start VS Code
3. Add a breakpoint somewhere in your code
4. Select Run and Debug on Activity Bar, on the far left hand side. In the RUN AND DEBUG drop down, select `GalaxyFastAPI uvicorn`, and click the Start Debugging button (green arrow)
5. Galaxy should stop right on the break point you added.
6. Enjoy your debugging session :-)