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watch_events.go
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watch_events.go
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// Copyright (c) 2017 Cisco and/or its affiliates.
//
// 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 linux
import (
"github.com/ligato/cn-infra/datasync"
"github.com/ligato/vpp-agent/plugins/linux/ifplugin/ifaceidx"
ifaceVPP "github.com/ligato/vpp-agent/plugins/vpp/ifplugin/ifaceidx"
"golang.org/x/net/context"
)
// WatchEvents goroutine is used to watch for changes in the northbound configuration.
func (plugin *Plugin) watchEvents(ctx context.Context) {
plugin.wg.Add(1)
defer plugin.wg.Done()
runWithMutex := func(fn func()) {
if plugin.WatchEventsMutex != nil {
plugin.WatchEventsMutex.Lock()
defer plugin.WatchEventsMutex.Unlock()
}
fn()
}
for {
select {
case e := <-plugin.resyncChan:
runWithMutex(func() {
plugin.onResyncEvent(e)
})
case e := <-plugin.changeChan:
runWithMutex(func() {
plugin.onChangeEvent(e)
})
case ms := <-plugin.msChan:
runWithMutex(func() {
plugin.nsHandler.HandleMicroservices(ms)
})
case e := <-plugin.ifIndexesWatchChan:
runWithMutex(func() {
plugin.onLinuxIfaceEvent(e)
})
case e := <-plugin.vppIfIndexesWatchChan:
runWithMutex(func() {
plugin.onVppIfaceEvent(e)
})
case <-ctx.Done():
plugin.Log.Debug("Stop watching events")
return
}
}
}
func (plugin *Plugin) onResyncEvent(e datasync.ResyncEvent) {
req := plugin.resyncParseEvent(e)
err := plugin.resyncPropageRequest(req)
e.Done(err)
}
func (plugin *Plugin) onChangeEvent(e datasync.ChangeEvent) {
err := plugin.changePropagateRequest(e)
e.Done(err)
}
func (plugin *Plugin) onLinuxIfaceEvent(e ifaceidx.LinuxIfIndexDto) {
if e.IsDelete() {
if err := plugin.arpConfigurator.ResolveDeletedInterface(e.Name, e.Idx); err != nil {
plugin.arpConfigurator.LogError(err)
}
if err := plugin.routeConfigurator.ResolveDeletedInterface(e.Name, e.Idx); err != nil {
plugin.routeConfigurator.LogError(err)
}
} else {
if err := plugin.arpConfigurator.ResolveCreatedInterface(e.Name, e.Idx); err != nil {
plugin.arpConfigurator.LogError(err)
}
if err := plugin.routeConfigurator.ResolveCreatedInterface(e.Name, e.Idx); err != nil {
plugin.routeConfigurator.LogError(err)
}
}
e.Done()
}
func (plugin *Plugin) onVppIfaceEvent(e ifaceVPP.SwIfIdxDto) {
if e.IsDelete() {
if err := plugin.ifConfigurator.ResolveDeletedVPPInterface(e.Metadata); err != nil {
plugin.ifConfigurator.LogError(err)
}
} else {
if err := plugin.ifConfigurator.ResolveCreatedVPPInterface(e.Metadata); err != nil {
plugin.ifConfigurator.LogError(err)
}
}
e.Done()
}