registry/servicediscovery/synthesizer/rest/rest_subscribed_urls_synthesizer.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 rest

import (
	"net/url"
	"strings"
)

import (
	"github.com/apache/dubbo-go/common"
	"github.com/apache/dubbo-go/common/constant"
	"github.com/apache/dubbo-go/registry"
	"github.com/apache/dubbo-go/registry/servicediscovery/synthesizer"
)

func init() {
	synthesizer.AddSynthesizer(NewRestSubscribedURLsSynthesizer())
}

//SubscribedURLsSynthesizer implementation for rest protocol
type RestSubscribedURLsSynthesizer struct {
}

func (r RestSubscribedURLsSynthesizer) Support(subscribedURL *common.URL) bool {
	if "rest" == subscribedURL.Protocol {
		return true
	}
	return false
}

func (r RestSubscribedURLsSynthesizer) Synthesize(subscribedURL *common.URL, serviceInstances []registry.ServiceInstance) []common.URL {
	urls := make([]common.URL, len(serviceInstances), len(serviceInstances))
	for i, s := range serviceInstances {
		splitHost := strings.Split(s.GetHost(), ":")
		u := common.NewURLWithOptions(common.WithProtocol(subscribedURL.Protocol), common.WithIp(splitHost[0]),
			common.WithPort(splitHost[1]), common.WithPath(subscribedURL.GetParam(constant.INTERFACE_KEY, subscribedURL.Path)),
			common.WithParams(url.Values{}),
			common.WithParamsValue(constant.SIDE_KEY, constant.PROVIDER_PROTOCOL),
			common.WithParamsValue(constant.APPLICATION_KEY, s.GetServiceName()),
			common.WithParamsValue(constant.REGISTRY_KEY, "true"),
		)
		urls[i] = *u
	}
	return urls
}

func NewRestSubscribedURLsSynthesizer() RestSubscribedURLsSynthesizer {
	return RestSubscribedURLsSynthesizer{}
}