// Licensed to the LF AI & Data foundation under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package datacoord

import (
	"fmt"

	"github.com/cockroachdb/errors"
)

// errNilKvClient stands for a nil kv client is detected when initialized
var errNilKvClient = errors.New("kv client not initialized")

// serverNotServingErrMsg used for Status Reason when DataCoord is not healthy
const serverNotServingErrMsg = "DataCoord is not serving"

// errors for VerifyResponse
var errNilResponse = errors.New("response is nil")
var errNilStatusResponse = errors.New("response has nil status")
var errUnknownResponseType = errors.New("unknown response type")

func msgDataCoordIsUnhealthy(coordID UniqueID) string {
	return fmt.Sprintf("DataCoord %d is not ready", coordID)
}

func errDataCoordIsUnhealthy(coordID UniqueID) error {
	return errors.New(msgDataCoordIsUnhealthy(coordID))
}

func msgSegmentNotFound(segID UniqueID) string {
	return fmt.Sprintf("failed to get segment %d", segID)
}

func msgAmbiguousIndexName() string {
	return "there are multiple indexes, please specify the index_name"
}
