db

Database management

This file briefly documents how the db package initializes the MariaDB connection and applies schema SQL included in the repository.

Paths

• db/create.sql — embedded initial schema (creates all required tables).
• db/upgrade.sql — embedded SQL file containing idempotent schema upgrades.

Environment variables (used to build DSN)

-- NETHVOICE_MIDDLEWARE_MARIADB_HOST (default: localhost) -- NETHVOICE_MIDDLEWARE_MARIADB_PORT (default: 3306) -- NETHVOICE_MIDDLEWARE_MARIADB_USER (default: root) -- NETHVOICE_MIDDLEWARE_MARIADB_PASSWORD (default: root in local/test) -- NETHVOICE_MIDDLEWARE_MARIADB_DATABASE (default: nethcti3)

Schema Migrations & Upgrades

If the database already exists when the application starts, db.Init() will run the embedded db/upgrade.sql automatically. The statements in upgrade.sql must be idempotent and safe to re-run.

Please note that db/upgrade.sql should contain idempotent statements (or checks) because it may be executed on existing databases and can be re-run in tests/CI.

Connection Pool Configuration

The middleware uses a connection pool with the following defaults:

• Max open connections: 25
• Max idle connections: 5
• Connection max lifetime: 5 minutes

These can be adjusted in db/db.go if needed for your workload.

Testing

• Unit tests for the package run with go test ./db.
• Integration tests that exercise the real DB require a running MariaDB instance (see agents.md for a Podman/Docker command).