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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 (
"errors"
"reflect"
"strconv"
)
import (
"github.com/knadh/koanf"
perrors "github.com/pkg/errors"
)
import (
"dubbo.apache.org/dubbo-go/v3/common"
"dubbo.apache.org/dubbo-go/v3/common/constant"
"dubbo.apache.org/dubbo-go/v3/common/extension"
"dubbo.apache.org/dubbo-go/v3/registry"
)
var (
rootConfig = NewRootConfigBuilder().Build()
)
func Load(opts ...LoaderConfOption) error {
// conf
conf := NewLoaderConf(opts...)
if conf.rc == nil {
koan := GetConfigResolver(conf)
koan = conf.MergeConfig(koan)
if err := koan.UnmarshalWithConf(rootConfig.Prefix(),
rootConfig, koanf.UnmarshalConf{Tag: "yaml"}); err != nil {
return err
}
} else {
rootConfig = conf.rc
}
if err := rootConfig.Init(); err != nil {
return err
}
return nil
}
func check() error {
if rootConfig == nil {
return errors.New("execute the config.Load() method first")
}
return nil
}
// registerServiceInstance register service instance
func registerServiceInstance() {
url := selectMetadataServiceExportedURL()
if url == nil {
return
}
instance, err := createInstance(url)
if err != nil {
panic(err)
}
p := extension.GetProtocol(constant.RegistryProtocol)
var rp registry.RegistryFactory
var ok bool
if rp, ok = p.(registry.RegistryFactory); !ok {
panic("dubbo registry protocol{" + reflect.TypeOf(p).String() + "} is invalid")
}
rs := rp.GetRegistries()
for _, r := range rs {
var sdr registry.ServiceDiscoveryHolder
if sdr, ok = r.(registry.ServiceDiscoveryHolder); !ok {
continue
}
// publish app level data to registry
err := sdr.GetServiceDiscovery().Register(instance)
if err != nil {
panic(err)
}
}
// publish metadata to remote
if GetApplicationConfig().MetadataType == constant.RemoteMetadataStorageType {
if remoteMetadataService, err := extension.GetRemoteMetadataService(); err == nil && remoteMetadataService != nil {
remoteMetadataService.PublishMetadata(GetApplicationConfig().Name)
}
}
}
//
//// nolint
func createInstance(url *common.URL) (registry.ServiceInstance, error) {
appConfig := GetApplicationConfig()
port, err := strconv.ParseInt(url.Port, 10, 32)
if err != nil {
return nil, perrors.WithMessage(err, "invalid port: "+url.Port)
}
host := url.Ip
if len(host) == 0 {
host = common.GetLocalIp()
}
// usually we will add more metadata
metadata := make(map[string]string, 8)
metadata[constant.MetadataStorageTypePropertyName] = appConfig.MetadataType
instance := ®istry.DefaultServiceInstance{
ServiceName: appConfig.Name,
Host: host,
Port: int(port),
ID: host + constant.KeySeparator + url.Port,
Enable: true,
Healthy: true,
Metadata: metadata,
}
for _, cus := range extension.GetCustomizers() {
cus.Customize(instance)
}
return instance, nil
}
// GetRPCService get rpc service for consumer
func GetRPCService(name string) common.RPCService {
return rootConfig.Consumer.References[name].GetRPCService()
}
// RPCService create rpc service for consumer
func RPCService(service common.RPCService) {
ref := common.GetReference(service)
rootConfig.Consumer.References[ref].Implement(service)
}
// GetMetricConfig find the MetricConfig
// if it is nil, create a new one
// we use double-check to reduce race condition
// In general, it will be locked 0 or 1 time.
// So you don't need to worry about the race condition
func GetMetricConfig() *MetricConfig {
// todo
//if GetBaseConfig().Metric == nil {
// configAccessMutex.Lock()
// defer configAccessMutex.Unlock()
// if GetBaseConfig().Metric == nil {
// GetBaseConfig().Metric = &metric.Metric{}
// }
//}
//return GetBaseConfig().Metric
return rootConfig.Metric
}
func GetTracingConfig(tracingKey string) *TracingConfig {
return rootConfig.Tracing[tracingKey]
}
func GetMetadataReportConfg() *MetadataReportConfig {
return rootConfig.MetadataReport
}
func IsProvider() bool {
return len(rootConfig.Provider.Services) > 0
}