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Python: Add support for Psycopg2 database connection pools #20276

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Aug 29, 2025
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Python: Add support for Psycopg2 database connection pools #20276

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d5e0298
Python: Add support for Psycopg2 database connection pools
tausbn Aug 25, 2025
1008ca9
Python: Add `psycopg2.pool` tests
tausbn Aug 25, 2025
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5 changes: 5 additions & 0 deletions python/ql/lib/change-notes/2025-08-25-psycopg2-connection-pool-modelling.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
category: minorAnalysis
---

- The modelling of Psycopg2 now supports the use of `psycopg2.pool` connection pools for handling database connections.
13 changes: 13 additions & 0 deletions python/ql/lib/semmle/python/frameworks/Psycopg2.qll
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Expand Up @@ -29,4 +29,17 @@ private module Psycopg2 {
class Psycopg2 extends PEP249::PEP249ModuleApiNode {
Psycopg2() { this = API::moduleImport("psycopg2") }
}

/** A database connection obtained from a psycopg2 connection pool. */
class Psycopg2ConnectionPoolMember extends PEP249::DatabaseConnection {
Psycopg2ConnectionPoolMember() {
this =
any(Psycopg2 p)
.getMember("pool")
.getMember(["SimpleConnectionPool", "ThreadedConnectionPool", "AbstractConnectionPool"])
.getAnInstance()
.getMember("getconn")
.getReturn()
}
}
}