## Migration From Other Enterprise Search Systems

### Google Search Appliance (GSA) / Google Mini

Fess provides a [Google Search Appliance](https://enterprise.google.com/search/products/gsa.html) (GSA) compatible API. To enable this API, set `web.api.gsa=true` to system.properties. This will enable an enpoint at `<Fess Server Name>:8080/gsa`. When a search query is sent to `<Fess Server Name>:8080/gsa/?q=QUERY`, a GSA compatible response will be returned

Nathan Mittler <******@****.***> 1657133008 -0700

const (
	// Indicates that the migration is running.
	MigrationRunning MigrationConditionType = "Running"
	// Indicates that the migration has completed successfully.
	MigrationSucceeded MigrationConditionType = "Succeeded"
	// Indicates that the migration has failed.
	MigrationFailed MigrationConditionType = "Failed"
)

// Describes the state of a migration at a certain point.
type MigrationCondition struct {

  // to migrate. When the .status.conditions indicates the migration is
  // "Running", users can use this token to check the progress of the
  // migration.
  // +optional
  optional string continueToken = 2;
}

// Status of the storage version migration.
message StorageVersionMigrationStatus {
  // The latest available observations of the migration's current state.

	"":         "StorageVersionMigration represents a migration of stored data to the latest storage version.",
	"metadata": "Standard object metadata. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata",
	"spec":     "Specification of the migration.",
	"status":   "Status of the migration.",
}

func (StorageVersionMigration) SwaggerDoc() map[string]string {

const (
	// Indicates that the migration is running.
	MigrationRunning MigrationConditionType = "Running"
	// Indicates that the migration has completed successfully.
	MigrationSucceeded MigrationConditionType = "Succeeded"
	// Indicates that the migration has failed.
	MigrationFailed MigrationConditionType = "Failed"
)

// Describes the state of a migration at a certain point.
type MigrationCondition struct {

See the License for the specific language governing permissions and
limitations under the License.
*/

package upgrade

import (
	"fmt"
	"os"
	"strings"

	"github.com/coredns/corefile-migration/migration"
	"github.com/pkg/errors"

	"k8s.io/apimachinery/pkg/util/sets"
	clientset "k8s.io/client-go/kubernetes"
	"k8s.io/klog/v2"

	kubeadmconstants "k8s.io/kubernetes/cmd/kubeadm/app/constants"

 * from one role to another by marking usages which are present in the current role but not present in the eventual role
 * as deprecated.
 *
 * <p>The roles here are all meant to be temporary roles used for migration only, to be removed in Gradle 9.0.</p>
 *
 * <p>This is meant to only support <strong>narrowing migrations</strong>, that restrict usage that was previously

// to CSI Migration is valid. It will return whether the migration is complete
// by looking up the pluginUnregister flag
func CheckMigrationFeatureFlags(f featuregate.FeatureGate, pluginMigration,
	pluginUnregister featuregate.Feature) (migrationComplete bool, err error) {
	// This is for in-tree plugin that get migration finished
	if f.Enabled(pluginMigration) && f.Enabled(pluginUnregister) {

		inTreePluginUnregisterEnabled bool
		csiMigrationResult            bool
		csiMigrationCompleteResult    bool
	}{
		{
			name:                          "gce-pd migration flag enabled and migration-complete flag disabled with CSI migration flag",
			pluginName:                    "kubernetes.io/gce-pd",
			pluginFeatureEnabled:          true,
			csiMigrationEnabled:           true,