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config_loader.go
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/
config_loader.go
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/*
* 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 config
import (
"fmt"
"log"
"os"
"time"
)
import (
"github.com/apache/dubbo-go/common"
"github.com/apache/dubbo-go/common/constant"
"github.com/apache/dubbo-go/common/logger"
"github.com/apache/dubbo-go/version"
)
var (
consumerConfig *ConsumerConfig
providerConfig *ProviderConfig
maxWait = 3
)
// loaded comsumer & provider config from xxx.yml, and log config from xxx.xml
// Namely: dubbo.comsumer.xml & dubbo.provider.xml in java dubbo
func init() {
var (
confConFile, confProFile string
)
confConFile = os.Getenv(constant.CONF_CONSUMER_FILE_PATH)
confProFile = os.Getenv(constant.CONF_PROVIDER_FILE_PATH)
if errCon := consumerInit(confConFile); errCon != nil {
log.Printf("[consumerInit] %#v", errCon)
consumerConfig = nil
}
if errPro := providerInit(confProFile); errPro != nil {
log.Printf("[providerInit] %#v", errPro)
providerConfig = nil
}
}
// Dubbo Init
func Load() {
var (
refMap map[string]*ReferenceConfig
srvMap map[string]*ServiceConfig
)
// reference config
if consumerConfig == nil {
logger.Warnf("consumerConfig is nil!")
} else {
if err := configCenterRefreshConsumer(); err != nil {
logger.Errorf("[consumer config center refresh] %#v", err)
}
refMap = make(map[string]*ReferenceConfig)
for _, ref := range consumerConfig.References {
rpcService := GetConsumerService(ref.InterfaceName)
if rpcService == nil {
logger.Warnf("%s is not exsist!", ref.InterfaceName)
continue
}
ref.Refer()
ref.Implement(rpcService)
refMap[ref.InterfaceName] = ref
}
//wait for invoker is available, if wait over default 3s, then panic
var count int
checkok := true
for {
for _, refconfig := range consumerConfig.References {
if (refconfig.Check != nil && *refconfig.Check) ||
(refconfig.Check == nil && consumerConfig.Check != nil && *consumerConfig.Check) ||
(refconfig.Check == nil && consumerConfig.Check == nil) { //default to true
if refconfig.invoker != nil &&
!refconfig.invoker.IsAvailable() {
checkok = false
count++
if count > maxWait {
panic(fmt.Sprintf("Failed to check the status of the service %v . No provider available for the service to the consumer use dubbo version %v", refconfig.InterfaceName, version.Version))
}
time.Sleep(time.Second * 1)
break
}
if refconfig.invoker == nil {
logger.Warnf("The interface %s invoker not exsist , may you should check your interface config.", refconfig.InterfaceName)
}
}
}
if checkok {
break
}
checkok = true
}
}
// service config
if providerConfig == nil {
logger.Warnf("providerConfig is nil!")
} else {
if err := configCenterRefreshProvider(); err != nil {
logger.Errorf("[provider config center refresh] %#v", err)
}
srvMap = make(map[string]*ServiceConfig)
for _, svs := range providerConfig.Services {
rpcService := GetProviderService(svs.InterfaceName)
if rpcService == nil {
logger.Warnf("%s is not exsist!", svs.InterfaceName)
continue
}
svs.Implement(rpcService)
if err := svs.Export(); err != nil {
panic(fmt.Sprintf("service %s export failed! ", svs.InterfaceName))
}
srvMap[svs.InterfaceName] = svs
}
}
}
// get rpc service for consumer
func GetRPCService(name string) common.RPCService {
return consumerConfig.References[name].GetRPCService()
}
// create rpc service for consumer
func RPCService(service common.RPCService) {
providerConfig.Services[service.Service()].Implement(service)
}