common/extension/metadata_remote.go

/*
 * Licensed to the Apache Software Foundation (ASF) 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 extension

import (
	"fmt"
)

import (
	perrors "github.com/pkg/errors"
)

import (
	"dubbo.apache.org/dubbo-go/v3/metadata/service"
)

type remoteMetadataServiceCreator func() (service.RemoteMetadataService, error)

var (
	creator remoteMetadataServiceCreator
)

// SetRemoteMetadataService will store the remote metadata service
func SetRemoteMetadataService(creatorFunc remoteMetadataServiceCreator) {
	creator = creatorFunc
}

// GetRemoteMetadataService will create a MetadataService instance
func GetRemoteMetadataService() (service.RemoteMetadataService, error) {
	if creator != nil {
		return creator()
	}
	return nil, perrors.New(fmt.Sprintf("could not find the metadata service creator for metadataType: remote, " +
		"please check whether you have imported relative packages, " +
		"remote - dubbo.apache.org/dubbo-go/v3/metadata/remote/impl"))
}