Refactor command handling: rename types.go to commands.go, update command response types, and streamline session management logic

services/data_service/internal/manager/commands.go

@@ -0,0 +1,78 @@
+package manager
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+	"gitlab.michelsen.id/phillmichelsen/tessera/services/data_service/internal/domain"
+	"gitlab.michelsen.id/phillmichelsen/tessera/services/data_service/internal/provider"
+)
+
+// Commands posted into the manager loop. One struct per action.
+type addProviderCmd struct {
+	name string
+	p    provider.Provider
+	resp chan addProviderResult
+}
+
+type addProviderResult struct {
+	err error
+}
+
+type removeProviderCmd struct {
+	name string
+	resp chan removeProviderResult
+}
+
+type removeProviderResult struct {
+	err error
+}
+
+type newSessionCmd struct {
+	idleAfter time.Duration
+	resp      chan newSessionResult
+}
+
+type newSessionResult struct {
+	id uuid.UUID
+}
+
+type attachCmd struct {
+	sid           uuid.UUID
+	inBuf, outBuf int
+	resp          chan attachResult
+}
+
+type attachResult struct {
+	cin  chan<- domain.Message
+	cout <-chan domain.Message
+	err  error
+}
+
+type detachCmd struct {
+	sid  uuid.UUID
+	resp chan detachResult
+}
+
+type detachResult struct {
+	err error
+}
+
+type configureCmd struct {
+	sid  uuid.UUID
+	next []domain.Identifier
+	resp chan configureResult
+}
+
+type configureResult struct {
+	err error
+}
+
+type closeSessionCmd struct {
+	sid  uuid.UUID
+	resp chan closeSessionResult
+}
+
+type closeSessionResult struct {
+	err error
+}