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refactor(store): schema_version migration table + DeleteAlert FK fix

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Replace the error-string-matching migration runner with a proper
schema_version table. Migrations are now numbered and recorded;
only unapplied versions run. Fresh databases seed at baseline
version (CREATE TABLE already includes all columns).

CREATE TABLE statements updated to include regions (sites) and
node_id (check_history) — previously only added via ALTER.

DeleteAlert now nulls sites.alert_id before deleting, preventing
dangling references that caused every incident to hit the error
path instead of alerting.
This commit is contained in:
Tyler Koenig
2026-06-11 16:02:17 -04:00
parent f00acbc280
commit 0974ab2b4c
4 changed files with 91 additions and 57 deletions
Download Patch File Download Diff File Expand all files Collapse all files
internal/store/postgres.go
+30 -27
View File
@@ -13,8 +13,9 @@ func NewPostgresStore(connStr string) (*SQLStore, error) {
return NewSQLStore("postgres", connStr, &PostgresDialect{})
}
func (d *PostgresDialect) DriverName() string { return "postgres" }
func (d *PostgresDialect) BoolFalse() string { return "FALSE" }
func (d *PostgresDialect) DriverName() string { return "postgres" }
func (d *PostgresDialect) BoolFalse() string { return "FALSE" }
func (d *PostgresDialect) BaselineVersion() int { return 21 }
func (d *PostgresDialect) CreateTablesSQL() []string {
return []string{
@@ -32,7 +33,8 @@ func (d *PostgresDialect) CreateTablesSQL() []string {
method TEXT DEFAULT 'GET', description TEXT DEFAULT '',
parent_id INTEGER DEFAULT 0, accepted_codes TEXT DEFAULT '200-299',
dns_resolve_type TEXT DEFAULT '', dns_server TEXT DEFAULT '',
ignore_tls BOOLEAN DEFAULT FALSE, paused BOOLEAN DEFAULT FALSE
ignore_tls BOOLEAN DEFAULT FALSE, paused BOOLEAN DEFAULT FALSE,
regions TEXT DEFAULT ''
)`,
`CREATE TABLE IF NOT EXISTS users (
id SERIAL PRIMARY KEY,
@@ -42,7 +44,8 @@ func (d *PostgresDialect) CreateTablesSQL() []string {
`CREATE TABLE IF NOT EXISTS check_history (
id SERIAL PRIMARY KEY,
site_id INTEGER NOT NULL, latency_ns BIGINT,
is_up BOOLEAN, checked_at TIMESTAMPTZ DEFAULT NOW()
is_up BOOLEAN, checked_at TIMESTAMPTZ DEFAULT NOW(),
node_id TEXT DEFAULT ''
)`,
`CREATE INDEX IF NOT EXISTS idx_check_history_site ON check_history(site_id, checked_at DESC)`,
`CREATE TABLE IF NOT EXISTS nodes (
@@ -92,29 +95,29 @@ func (d *PostgresDialect) CreateTablesSQL() []string {
}
}
func (d *PostgresDialect) MigrationsSQL() []string {
return []string{
"ALTER TABLE sites ADD COLUMN IF NOT EXISTS hostname TEXT DEFAULT ''",
"ALTER TABLE sites ADD COLUMN IF NOT EXISTS port INTEGER DEFAULT 0",
"ALTER TABLE sites ADD COLUMN IF NOT EXISTS timeout INTEGER DEFAULT 0",
"ALTER TABLE sites ADD COLUMN IF NOT EXISTS method TEXT DEFAULT 'GET'",
"ALTER TABLE sites ADD COLUMN IF NOT EXISTS description TEXT DEFAULT ''",
"ALTER TABLE sites ADD COLUMN IF NOT EXISTS parent_id INTEGER DEFAULT 0",
"ALTER TABLE sites ADD COLUMN IF NOT EXISTS accepted_codes TEXT DEFAULT '200-299'",
"ALTER TABLE sites ADD COLUMN IF NOT EXISTS dns_resolve_type TEXT DEFAULT ''",
"ALTER TABLE sites ADD COLUMN IF NOT EXISTS dns_server TEXT DEFAULT ''",
"ALTER TABLE sites ADD COLUMN IF NOT EXISTS ignore_tls BOOLEAN DEFAULT FALSE",
"ALTER TABLE sites ADD COLUMN IF NOT EXISTS paused BOOLEAN DEFAULT FALSE",
"ALTER TABLE check_history ADD COLUMN IF NOT EXISTS node_id TEXT DEFAULT ''",
"ALTER TABLE sites ADD COLUMN IF NOT EXISTS regions TEXT DEFAULT ''",
"ALTER TABLE check_history ALTER COLUMN checked_at TYPE TIMESTAMPTZ USING checked_at AT TIME ZONE 'UTC'",
"ALTER TABLE nodes ALTER COLUMN last_seen TYPE TIMESTAMPTZ USING last_seen AT TIME ZONE 'UTC'",
"ALTER TABLE logs ALTER COLUMN created_at TYPE TIMESTAMPTZ USING created_at AT TIME ZONE 'UTC'",
"ALTER TABLE maintenance_windows ALTER COLUMN start_time TYPE TIMESTAMPTZ USING start_time AT TIME ZONE 'UTC'",
"ALTER TABLE maintenance_windows ALTER COLUMN end_time TYPE TIMESTAMPTZ USING end_time AT TIME ZONE 'UTC'",
"ALTER TABLE maintenance_windows ALTER COLUMN created_at TYPE TIMESTAMPTZ USING created_at AT TIME ZONE 'UTC'",
"ALTER TABLE state_changes ALTER COLUMN changed_at TYPE TIMESTAMPTZ USING changed_at AT TIME ZONE 'UTC'",
"ALTER TABLE alert_health ALTER COLUMN last_send_at TYPE TIMESTAMPTZ USING last_send_at AT TIME ZONE 'UTC'",
func (d *PostgresDialect) Migrations() []Migration {
return []Migration{
{1, "ALTER TABLE sites ADD COLUMN IF NOT EXISTS hostname TEXT DEFAULT ''"},
{2, "ALTER TABLE sites ADD COLUMN IF NOT EXISTS port INTEGER DEFAULT 0"},
{3, "ALTER TABLE sites ADD COLUMN IF NOT EXISTS timeout INTEGER DEFAULT 0"},
{4, "ALTER TABLE sites ADD COLUMN IF NOT EXISTS method TEXT DEFAULT 'GET'"},
{5, "ALTER TABLE sites ADD COLUMN IF NOT EXISTS description TEXT DEFAULT ''"},
{6, "ALTER TABLE sites ADD COLUMN IF NOT EXISTS parent_id INTEGER DEFAULT 0"},
{7, "ALTER TABLE sites ADD COLUMN IF NOT EXISTS accepted_codes TEXT DEFAULT '200-299'"},
{8, "ALTER TABLE sites ADD COLUMN IF NOT EXISTS dns_resolve_type TEXT DEFAULT ''"},
{9, "ALTER TABLE sites ADD COLUMN IF NOT EXISTS dns_server TEXT DEFAULT ''"},
{10, "ALTER TABLE sites ADD COLUMN IF NOT EXISTS ignore_tls BOOLEAN DEFAULT FALSE"},
{11, "ALTER TABLE sites ADD COLUMN IF NOT EXISTS paused BOOLEAN DEFAULT FALSE"},
{12, "ALTER TABLE check_history ADD COLUMN IF NOT EXISTS node_id TEXT DEFAULT ''"},
{13, "ALTER TABLE sites ADD COLUMN IF NOT EXISTS regions TEXT DEFAULT ''"},
{14, "ALTER TABLE check_history ALTER COLUMN checked_at TYPE TIMESTAMPTZ USING checked_at AT TIME ZONE 'UTC'"},
{15, "ALTER TABLE nodes ALTER COLUMN last_seen TYPE TIMESTAMPTZ USING last_seen AT TIME ZONE 'UTC'"},
{16, "ALTER TABLE logs ALTER COLUMN created_at TYPE TIMESTAMPTZ USING created_at AT TIME ZONE 'UTC'"},
{17, "ALTER TABLE maintenance_windows ALTER COLUMN start_time TYPE TIMESTAMPTZ USING start_time AT TIME ZONE 'UTC'"},
{18, "ALTER TABLE maintenance_windows ALTER COLUMN end_time TYPE TIMESTAMPTZ USING end_time AT TIME ZONE 'UTC'"},
{19, "ALTER TABLE maintenance_windows ALTER COLUMN created_at TYPE TIMESTAMPTZ USING created_at AT TIME ZONE 'UTC'"},
{20, "ALTER TABLE state_changes ALTER COLUMN changed_at TYPE TIMESTAMPTZ USING changed_at AT TIME ZONE 'UTC'"},
{21, "ALTER TABLE alert_health ALTER COLUMN last_send_at TYPE TIMESTAMPTZ USING last_send_at AT TIME ZONE 'UTC'"},
}
}