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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 fixed
import (
"context"
"reflect"
"github.com/erda-project/erda-infra/base/logs"
"github.com/erda-project/erda-infra/base/servicehub"
"github.com/erda-project/erda-proto-go/msp/apm/checker/pb"
"github.com/erda-project/erda/modules/msp/apm/checker/task/fetcher"
)
type config struct {
Checkers []*pb.Checker `file:"checkers"`
}
// +provider
type provider struct {
Cfg *config
Log logs.Logger
watchers []chan *fetcher.Event
}
func (p *provider) Run(ctx context.Context) error {
if len(p.watchers) <= 0 {
return nil
}
for _, c := range p.Cfg.Checkers {
for _, w := range p.watchers {
select {
case w <- &fetcher.Event{
Action: fetcher.ActionAdd,
Data: c,
}:
case <-ctx.Done():
return nil
}
}
}
return nil
}
func (p *provider) Watch() <-chan *fetcher.Event {
ch := make(chan *fetcher.Event, 16)
p.watchers = append(p.watchers, ch)
return ch
}
func init() {
servicehub.Register("erda.msp.apm.checker.task.fetcher.fixed", &servicehub.Spec{
Services: []string{"erda.msp.apm.checker.task.fetcher"},
Types: []reflect.Type{reflect.TypeOf((*fetcher.Interface)(nil)).Elem()},
ConfigFunc: func() interface{} { return &config{} },
Creator: func() servicehub.Provider { return &provider{} },
})
}