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Add L7/PROXY protocol data model, config, and architecture docs

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Extend the config, database schema, and server internals to support
per-route L4/L7 mode selection and PROXY protocol fields. This is the
foundation for L7 HTTP/2 reverse proxying and multi-hop PROXY protocol
support described in the updated ARCHITECTURE.md.

Config: Listener gains ProxyProtocol; Route gains Mode, TLSCert,
TLSKey, BackendTLS, SendProxyProtocol. L7 routes validated at load
time (cert/key pair must exist and parse). Mode defaults to "l4".

DB: Migration v2 adds columns to listeners and routes tables. CRUD
and seeding updated to persist all new fields.

Server: RouteInfo replaces bare backend string in route lookup.
handleConn dispatches on route.Mode (L7 path stubbed with error).
ListenerState and ListenerData carry ProxyProtocol flag.

All existing L4 tests pass unchanged. New tests cover migration v2,
L7 field persistence, config validation for mode/cert/key, and
proxy_protocol flag round-tripping.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Kyle Isom
2026-03-25 13:15:51 -07:00
parent 666d55018c
commit ed94548dfa
17 changed files with 1283 additions and 205 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
internal/db/routes.go
View File

@@ -4,16 +4,22 @@ import "fmt"
// Route is a database route record.
type Route struct {
ID int64
ListenerID int64
Hostname string
Backend string
ID int64
ListenerID int64
Hostname string
Backend string
Mode string // "l4" or "l7"
TLSCert string
TLSKey string
BackendTLS bool
SendProxyProtocol bool
}
// ListRoutes returns all routes for a listener.
func (s *Store) ListRoutes(listenerID int64) ([]Route, error) {
rows, err := s.db.Query(
"SELECT id, listener_id, hostname, backend FROM routes WHERE listener_id = ? ORDER BY hostname",
`SELECT id, listener_id, hostname, backend, mode, tls_cert, tls_key, backend_tls, send_proxy_protocol
FROM routes WHERE listener_id = ? ORDER BY hostname`,
listenerID,
)
if err != nil {
@@ -24,7 +30,8 @@ func (s *Store) ListRoutes(listenerID int64) ([]Route, error) {
var routes []Route
for rows.Next() {
var r Route
if err := rows.Scan(&r.ID, &r.ListenerID, &r.Hostname, &r.Backend); err != nil {
if err := rows.Scan(&r.ID, &r.ListenerID, &r.Hostname, &r.Backend,
&r.Mode, &r.TLSCert, &r.TLSKey, &r.BackendTLS, &r.SendProxyProtocol); err != nil {
return nil, fmt.Errorf("scanning route: %w", err)
}
routes = append(routes, r)
@@ -33,10 +40,11 @@ func (s *Store) ListRoutes(listenerID int64) ([]Route, error) {
}
// CreateRoute inserts a route and returns its ID.
func (s *Store) CreateRoute(listenerID int64, hostname, backend string) (int64, error) {
func (s *Store) CreateRoute(listenerID int64, hostname, backend, mode, tlsCert, tlsKey string, backendTLS, sendProxyProtocol bool) (int64, error) {
result, err := s.db.Exec(
"INSERT INTO routes (listener_id, hostname, backend) VALUES (?, ?, ?)",
listenerID, hostname, backend,
`INSERT INTO routes (listener_id, hostname, backend, mode, tls_cert, tls_key, backend_tls, send_proxy_protocol)
VALUES (?, ?, ?, ?, ?, ?, ?, ?)`,
listenerID, hostname, backend, mode, tlsCert, tlsKey, backendTLS, sendProxyProtocol,
)
if err != nil {
return 0, fmt.Errorf("inserting route: %w", err)