generated from xmidt-org/.go-template
/
filter.go
90 lines (76 loc) · 1.84 KB
/
filter.go
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// Copyright 2020 Comcast Cable Communications Management, LLC
//
// 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 plugin
import (
"context"
"github.com/xmidt-org/ears/pkg/tenant"
"sync"
"github.com/xmidt-org/ears/pkg/event"
pkgfilter "github.com/xmidt-org/ears/pkg/filter"
pkgmanager "github.com/xmidt-org/ears/pkg/plugin/manager"
)
var _ pkgfilter.Filterer = (*filter)(nil)
type filter struct {
sync.Mutex
id string
name string
plugin string
hash string
tid tenant.Id
manager *manager
active bool
filterer pkgfilter.Filterer
}
func (f *filter) Filter(e event.Event) []event.Event {
if f.filterer == nil {
e.Nack(&pkgmanager.NilPluginError{})
return nil
}
{
f.Lock()
if !f.active {
f.Unlock()
e.Nack(&pkgmanager.NotRegisteredError{})
return nil
}
f.Unlock()
}
return f.filterer.Filter(e)
}
func (f *filter) Unregister(ctx context.Context) error {
if f == nil {
return &pkgmanager.NilPluginError{}
}
{
f.Lock()
if f.manager == nil || !f.active {
f.Unlock()
return &pkgmanager.NotRegisteredError{}
}
f.Unlock()
}
return f.manager.UnregisterFilter(ctx, f)
}
func (f *filter) Config() interface{} {
return f.filterer.Config()
}
func (f *filter) Name() string {
return f.name
}
func (f *filter) Plugin() string {
return f.plugin
}
func (f *filter) Tenant() tenant.Id {
return f.tid
}