[management] Remove the MySQL store engine (#7914)

management/internals/modules/agentnetwork/agent_config_realstore_test.go

@@ -341,7 +341,7 @@ func TestGetAgentConfigForUser_RealStore(t *testing.T) {
 	require.NoError(t, s.SaveAgentNetworkPolicy(ctx, newSynthTestPolicy(provider.ID, "grp-eng", "")))
 
 	// users.account_id is a foreign key into accounts, enforced on
-	// MySQL/Postgres, so the account row must exist before its users.
+	// Postgres, so the account row must exist before its users.
 	require.NoError(t, s.SaveAccount(ctx, &nbtypes.Account{Id: testAccountID}))
 	require.NoError(t, s.SaveUser(ctx, &nbtypes.User{
 		Id: "user-in", AccountID: testAccountID, Role: nbtypes.UserRoleUser, AutoGroups: []string{"grp-eng"},

management/internals/modules/agentnetwork/manager.go

@@ -1277,7 +1277,6 @@ func isUniqueConstraintError(err error) bool {
 	}
 	msg := err.Error()
 	return strings.Contains(msg, "(SQLSTATE 23505)") || // postgres
-		strings.Contains(msg, "Error 1062 (23000)") || // mysql
 		strings.Contains(msg, "UNIQUE constraint failed") // sqlite
 }
 

management/internals/modules/agentnetwork/provider_redaction_test.go

@@ -98,9 +98,8 @@ func TestGetProvider_RedactsForReadOnlyViewer(t *testing.T) {
 // keeps the account-wide view with full config.
 
 // newSelfScopeStore seeds the account and its users only, so each test
-// declares exactly the providers and policies it asserts on — the store
-// rejects re-saving a policy id on MySQL, so tests never overwrite each
-// other's rows.
+// declares exactly the providers and policies it asserts on, so tests never
+// overwrite each other's rows.
 func newSelfScopeStore(t *testing.T) (*managerImpl, store.Store) {
 	t.Helper()
 	mgr, s := newAgentConfigTestMgr(t)

management/internals/modules/agentnetwork/types/settings.go

@@ -21,8 +21,7 @@ type Settings struct {
 	AccountID string `gorm:"primaryKey"`
 
 	// Domain is the gateway endpoint hostname agents call. Globally unique
-	// across accounts. Sized explicitly because MySQL cannot index an
-	// unbounded TEXT column; 255 covers the RFC 1035 253-octet bound.
+	// across accounts. 255 covers the RFC 1035 253-octet bound.
 	Domain string `gorm:"type:varchar(255);uniqueIndex:idx_agent_network_settings_domain"`
 
 	// ProxyAddress is the declared cluster address of the proxy serving this

management/internals/modules/agentnetwork/types/usageoverview.go

@@ -95,7 +95,7 @@ func bucketStart(t time.Time, g UsageGranularity) time.Time {
 // AggregateUsageByGranularity buckets the usage rows by the requested
 // granularity and returns the buckets ordered oldest-first. Aggregation is done
 // in Go (rather than per-engine SQL date_trunc) so granularities stay portable
-// across SQLite/Postgres/MySQL and easy to extend.
+// across SQLite and Postgres and easy to extend.
 func AggregateUsageByGranularity(rows []*AgentNetworkUsage, g UsageGranularity) []*AgentNetworkUsageBucket {
 	byPeriod := make(map[string]*AgentNetworkUsageBucket)
 	for _, r := range rows {