feat: 接入 Instance 原生管理观测与删除保护

internal/database/application/instance_reconciliation_test.go

@@ -0,0 +1,79 @@
+package application
+
+import (
+	"context"
+	"errors"
+	"testing"
+
+	"git.ddupan.top/panxiao81/ayatori/internal/database/domain/instance"
+)
+
+func TestInstanceFailurePresentation(t *testing.T) {
+	cases := []struct {
+		err    error
+		reason string
+	}{
+		{ErrAuthentication, "AuthenticationFailed"},
+		{ErrCredentialsInvalid, "InvalidCredentials"},
+		{ErrCredentialsChanged, "CredentialsChanged"},
+		{ErrCredentialsUnavailable, instanceDependencyUnavailable},
+		{context.DeadlineExceeded, instanceDependencyUnavailable},
+		{errors.New("private backend detail"), instanceDependencyUnavailable},
+	}
+	for _, test := range cases {
+		reason, message := observationFailure(test.err)
+		if reason != test.reason || message == "" || message == test.err.Error() {
+			t.Fatal("观察失败没有安全且可诊断的状态")
+		}
+	}
+	for _, failure := range []instance.Failure{
+		instance.NoFailure, instance.ObservationIncomplete, instance.DependencyUnavailable,
+		instance.AuthenticationFailed, instance.InsufficientPrivileges,
+	} {
+		reason, message := managementResult(failure)
+		if reason == "" || message == "" || (reason == "ManagementReady") != (failure == instance.NoFailure) {
+			t.Fatal("领域能力判定与状态不一致")
+		}
+	}
+}
+
+func TestMetadataCannotEstablishManagementReadiness(t *testing.T) {
+	source := &sourceStub{}
+	source.credentials, _ = NewCredentials("test", serviceTestPassword)
+	connector := &connectorStub{}
+	service, err := NewInstanceService(source, connector)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer service.Close()
+	target := serviceTarget(t, "uid", "postgres.test", "management", 1)
+	if _, err := service.ObserveMetadata(t.Context(), target); err != nil {
+		t.Fatal(err)
+	}
+	connector.databases[0].metadata.Management = instance.ManagementChecks{
+		Connection: instance.CheckPassed, Metadata: instance.CheckPassed,
+		Roles: instance.CheckPassed, Databases: instance.CheckPassed,
+		Grants: instance.CheckPassed, Extensions: instance.CheckPassed,
+	}
+	observation, err := service.ObserveMetadata(t.Context(), target)
+	if err != nil {
+		t.Fatal(err)
+	}
+	capabilities, err := observation.Capabilities()
+	if err != nil {
+		t.Fatal(err)
+	}
+	aggregate, err := instance.Reconstitute(target, instance.Snapshot{}, false)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := aggregate.BeginValidation(); err != nil {
+		t.Fatal(err)
+	}
+	if err := aggregate.AssessManagement(capabilities); err != nil {
+		t.Fatal(err)
+	}
+	if aggregate.Snapshot().Failure != instance.ObservationIncomplete {
+		t.Fatal("metadata 入口不应携带完整管理检查")
+	}
+}