Replace MySQL driver with pgx/v5 and pgxpool:
- Update sqlc to use postgresql engine
- Convert query.sql to PostgreSQL syntax ($1 params, CASE WHEN,
ANY() arrays)
- Replace sql.DB with pgxpool.Pool throughout
- Change nullable types from sql.Null* to pgtype.*
- Update ID types from uint32 to int64 for PostgreSQL compatibility
- Delete MySQL-specific dynamic_connect.go
- Add opentelemetry.gowrap template for tracing
Remove status filter from GetMonitorByNameAndIPVersion query to allow
historical score data for deleted monitors to be accessible when
querying by monitor name/TLS name, making behavior consistent with
ID-based queries.
Score monitors have type='score' and ip_version=NULL, but the
GetMonitorByNameAndIPVersion query required ip_version to match.
This broke monitor lookups by name for score monitors.
Modified query to match either:
- Regular monitors with specified ip_version
- Score monitors with NULL ip_version
Fixes issue reported by Ben Harris at:
https://community.ntppool.org/t/monitor-recentmedian-no-longer-works/4002
Servers with monitor filtering returned incorrect results when monitors
have same names but different protocols (v4/v6). Monitor lookup now
considers both name and IP version to match the correct protocol.
- Add GetMonitorByNameAndIPVersion SQL query with protocol matching
- Update history parameter parsing to use server IP version context
- Fix both /scores/{ip}/log and Grafana endpoints
- Remove unused GetMonitorByName query
Fixesabh/ntppool#264
Reported-by: Anssi Johansson <https://github.com/avijc>
