fix(delivery): add PostgreSQL rollback and CloudDM isolation

server/internal/service/postgresql_delivery_test.go

@@ -2,7 +2,10 @@ package service
 
 import (
 	"context"
+	"encoding/json"
 	"testing"
+
+	"github.com/1024XEngineer/xinfra/server/internal/model"
 )
 
 func TestValidatePostgreSQLDeliveryInput(t *testing.T) {
@@ -102,3 +105,42 @@ func TestSelectPostgreSQLHosts(t *testing.T) {
 		t.Fatal("host outside the pool was accepted")
 	}
 }
+
+func TestBuildPostgreSQLCloudDMRegisterRequest(t *testing.T) {
+	req := buildPostgreSQLCloudDMRegisterRequest(
+		model.PostgreSQLInstance{ID: 42, InstanceID: "orders-pg-primary", HostIP: "10.0.0.10", Port: 15432, VersionMajor: "16", Role: "primary"},
+		model.PostgreSQLCluster{ID: 7, Name: "orders-pg"},
+		"postgres",
+		"secret",
+	)
+	if req.SourceSystem != "xinfra" || req.ResourceType != "POSTGRESQL_INSTANCE" {
+		t.Fatalf("unexpected request metadata: %#v", req)
+	}
+	if req.ExternalResourceID != "postgresql-instance:42" {
+		t.Fatalf("unexpected externalResourceId: %q", req.ExternalResourceID)
+	}
+	if req.DataSource.DSType != "PostgreSQL" || req.DataSource.Host != "10.0.0.10:15432" || req.DataSource.UserName != "postgres" || req.DataSource.Password != "secret" {
+		t.Fatalf("unexpected PostgreSQL data source: %#v", req.DataSource)
+	}
+	if req.DataSource.PostgreSQLVersion != "16" || req.DataSource.DefaultSchema != "postgres" {
+		t.Fatalf("unexpected PostgreSQL version/schema: %#v", req.DataSource)
+	}
+	raw, err := json.Marshal(req)
+	if err != nil {
+		t.Fatalf("marshal PostgreSQL CloudDM request: %v", err)
+	}
+	var decoded map[string]any
+	if err := json.Unmarshal(raw, &decoded); err != nil {
+		t.Fatalf("decode PostgreSQL CloudDM request: %v", err)
+	}
+	dataSource := decoded["dataSource"].(map[string]any)
+	if dataSource["postgresql_version"] != "16" {
+		t.Fatalf("postgresql_version missing from contract: %#v", dataSource)
+	}
+}
+
+func TestPostgreSQLCloudDMExternalResourceID(t *testing.T) {
+	if got := postgresqlCloudDMExternalResourceID(99); got != "postgresql-instance:99" {
+		t.Fatalf("external resource id = %q", got)
+	}
+}