fix: refresh stale ServerManager when a server id is reused - #10312
fix: refresh stale ServerManager when a server id is reused#10312dpage wants to merge 2 commits into
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connection_manager() cached ServerManager objects keyed only by the Flask session id and the numeric server id. If the configuration database is reset or restored without restarting pgAdmin, a freshly created server can reuse the id of a deleted one, and the cached manager - still pointing at the old server's host/port/credentials - gets returned as though it belonged to the new row, including reporting a stale "connected" status. Compare the manager against the current Server row's identifying fields (host, port, database, user, service, tunnel host) before reusing it, and rebuild via the existing update()/release() path when they no longer match.
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WalkthroughChangesPsycopg3 manager refresh
Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: 🟠 High · up to After a configuration database reset, an old cached or restored connection manager can still be associated with a newly created server, potentially showing a false connected state or sending queries to the wrong physical server. This concrete correctness and isolation risk should be fixed before merge. Suggested reviewers: 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
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Inline comments:
In `@web/pgadmin/utils/driver/psycopg3/__init__.py`:
- Around line 168-183: Update the serialized manager-state flow around
_restore_connections_from_session() and _restore() to persist the originating
Server identity and validate it against server_data before restoring. When the
identity does not match, discard the serialized session_managers entry instead
of restoring it; preserve restoration for matching state, and add a regression
test covering the first restore after a configuration reset with a reused server
ID.
- Around line 113-120: Update the manager identity comparison used by the
relevant psycopg3 server reset/reuse flow to include a persisted, non-reusable
Server generation identifier in addition to the six connection fields. Ensure a
recreated Server with matching connection values is treated as new and does not
retain the old manager or connected state, and add a regression case covering
this reused-ID scenario.
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web/pgadmin/utils/driver/psycopg3/__init__.pyweb/pgadmin/utils/driver/psycopg3/tests/test_manager_is_stale.py
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…tadata CodeRabbit review on pgadmin-org#10312 identified two real gaps left by the _manager_is_stale check: - _restore_connections_from_session() (the path taken on a worker's first request for a session, e.g. after a restart) restored serialized password/connection state from the Flask session purely by numeric server id, with no identity check at all - so a reused id would have the previous row's serialized state applied before any manager existed to run _manager_is_stale against. ServerManager.as_dict() now persists the same six identity fields alongside the serialized state, and _restore_connections_from_session() checks them (via the new _saved_state_is_stale) before restoring, discarding the blob instead of restoring it when they don't match. - The non-stale (fast) path in connection_manager() kept a cached manager's shared/passexec suppression as of whenever it was last built, since manager.update() - the only place shared/passexec get refreshed - is only called on the stale path. A reused id whose new row happens to share every identity field but differs in shared/ ownership would keep serving the previous owner's passexec to a non-owner. shared/passexec are now refreshed unconditionally from the current server row regardless of which path was taken.
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Summary
connection_manager()cachesServerManagerobjects keyed only by the Flask session id and the server's numeric id. If the configuration database is reset or restored without restarting pgAdmin, a newly created server can end up reusing the id of a deleted one (autoincrement restarts from 1 on a fresh DB), and the cached manager, still holding the old server's host/port/credentials/connection state, gets handed back as though it belonged to the new row. This can show a server as "connected" when it never has been, or worse, route queries at the wrong physical server.Fixes #6090.
Change
Before reusing a cached manager, compare it against the current
Serverrow's identifying fields (host, port, maintenance db, username, service, tunnel host). On a mismatch, release the stale connections and rebuild the manager via the existingupdate()path (the same mechanism already used by the server-edit endpoints), rather than trusting the numeric id match alone.Test plan
Driver._manager_is_stale(web/pgadmin/utils/driver/psycopg3/tests/test_manager_is_stale.py)regression/runtests.py --pkg utils.driver.psycopg3.tests.test_manager_is_stale— 4/4 passedregression/runtests.py --pkg browser.server_groups.servers.tests.test_check_connect— 11/11 passed (no regression in normal connect/edit flows)pycodestyleclean on both changed filesSummary by CodeRabbit
Bug Fixes
Tests