feat: add IM service health and metrics endpoints

server/store/mock_store/mock_store.go

@@ -5,6 +5,7 @@
 package mock_store
 
 import (
+	context "context"
 	json "encoding/json"
 	reflect "reflect"
 	time "time"
@@ -138,6 +139,20 @@ func (mr *MockPersistentStorageInterfaceMockRecorder) GetAuthNames() *gomock.Cal
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GetAuthNames", reflect.TypeOf((*MockPersistentStorageInterface)(nil).GetAuthNames))
 }
 
+// HealthCheck mocks base method.
+func (m *MockPersistentStorageInterface) HealthCheck(ctx context.Context) error {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "HealthCheck", ctx)
+	ret0, _ := ret[0].(error)
+	return ret0
+}
+
+// HealthCheck indicates an expected call of HealthCheck.
+func (mr *MockPersistentStorageInterfaceMockRecorder) HealthCheck(ctx interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "HealthCheck", reflect.TypeOf((*MockPersistentStorageInterface)(nil).HealthCheck), ctx)
+}
+
 // GetDbVersion mocks base method.
 func (m *MockPersistentStorageInterface) GetDbVersion() int {
 	m.ctrl.T.Helper()

server/store/store.go

@@ -2,6 +2,7 @@
 package store
 
 import (
+	"context"
 	"encoding/json"
 	"errors"
 	"fmt"
@@ -120,6 +121,7 @@ type PersistentStorageInterface interface {
 	GetUid() types.Uid
 	GetUidString() string
 	DbStats() func() any
+	HealthCheck(context.Context) error
 	GetAuthNames() []string
 	GetAuthHandler(name string) auth.AuthHandler
 	GetLogicalAuthHandler(name string) auth.AuthHandler
@@ -473,6 +475,19 @@ func (storeObj) GetAdapter() adapter.Adapter {
 	return adp
 }
 
+// HealthCheck verifies that the persistent storage adapter can execute a real operation.
+func (storeObj) HealthCheck(ctx context.Context) error {
+	if adp == nil || !adp.IsOpen() {
+		return errors.New("store is not open")
+	}
+	if checker, ok := adp.(interface {
+		HealthCheck(context.Context) error
+	}); ok {
+		return checker.HealthCheck(ctx)
+	}
+	return errors.New("health check is not supported by " + adp.GetName())
+}
+
 // GetAdapterName returns the name of the current adater.
 func (storeObj) GetAdapterName() string {
 	if adp != nil {