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provider.go
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provider.go
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// Copyright (c) 2021 Terminus, Inc.
//
// Licensed 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 adapter
import (
"io/ioutil"
"gopkg.in/yaml.v2"
logs "github.com/erda-project/erda-infra/base/logs"
servicehub "github.com/erda-project/erda-infra/base/servicehub"
transport "github.com/erda-project/erda-infra/pkg/transport"
pb "github.com/erda-project/erda-proto-go/msp/apm/adapter/pb"
"github.com/erda-project/erda/pkg/common/apis"
)
type config struct {
CollectorUrl string `file:"collector_url"`
LibraryFiles []string `file:"libraryFiles"`
ConfigFiles []string `file:"configFiles"`
}
// +provider
type provider struct {
Cfg *config
Log logs.Logger
Register transport.Register
adapterService *adapterService
libraries []*InstrumentationLibrary
templates map[string]*InstrumentationLibraryTemplate
}
func (p *provider) Init(ctx servicehub.Context) error {
p.libraries = make([]*InstrumentationLibrary, 0)
p.templates = make(map[string]*InstrumentationLibraryTemplate)
for _, file := range p.Cfg.LibraryFiles {
f, err := ioutil.ReadFile(file)
if err != nil {
return err
}
libs := make([]*InstrumentationLibrary, 0)
err = yaml.Unmarshal(f, &libs)
if err != nil {
return err
}
p.libraries = append(p.libraries, libs...)
}
for _, file := range p.Cfg.ConfigFiles {
f, err := ioutil.ReadFile(file)
if err != nil {
return err
}
templates := make([]*InstrumentationLibraryTemplate, 0)
err = yaml.Unmarshal(f, &templates)
if err != nil {
return err
}
for _, template := range templates {
p.templates[template.InstrumentationLibrary] = template
}
}
if p.Register != nil {
p.adapterService = &adapterService{p}
pb.RegisterInstrumentationLibraryServiceImp(p.Register, p.adapterService, apis.Options())
}
return nil
}
func (p *provider) Provide(ctx servicehub.DependencyContext, args ...interface{}) interface{} {
switch {
case ctx.Service() == "erda.msp.apm.adapter.AdapterService" || ctx.Type() == pb.InstrumentationLibraryServiceServerType() || ctx.Type() == pb.InstrumentationLibraryServiceHandlerType():
return p.adapterService
}
return p
}
func init() {
servicehub.Register("erda.msp.apm.adapter", &servicehub.Spec{
Services: pb.ServiceNames(),
Types: pb.Types(),
OptionalDependencies: []string{"service-register"},
Description: "",
ConfigFunc: func() interface{} {
return &config{}
},
Creator: func() servicehub.Provider {
return &provider{}
},
})
}