craigcondit commented on code in PR #418:
URL: https://github.com/apache/yunikorn-k8shim/pull/418#discussion_r877289328
##########
pkg/appmgmt/interfaces/recoverable.go:
##########
@@ -35,7 +35,7 @@ import (
// and then properly recover these applications before recovering nodes.
type Recoverable interface {
// list applications returns all existing applications known to this
app manager.
- ListApplications() (map[string]ApplicationMetadata, error)
+ ListApplications() ([]*v1.Pod, error)
Review Comment:
Let's call this ListPods() or something since apps don't have anything to do
with it any more.
##########
pkg/appmgmt/general/podevent_handler.go:
##########
@@ -0,0 +1,176 @@
+/*
+ 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 general
+
+import (
+ "sync"
+
+ "github.com/apache/yunikorn-k8shim/pkg/appmgmt/interfaces"
+ "github.com/apache/yunikorn-k8shim/pkg/log"
+
+ "go.uber.org/zap"
+
+ v1 "k8s.io/api/core/v1"
+)
+
+type PodEventHandler struct {
+ recoveryRunning bool
+ amProtocol interfaces.ApplicationManagementProtocol
+ asyncEvents []*podAsyncEvent
+ sync.Mutex
+}
+
+const (
+ AddPod = iota
+ UpdatePod
+ DeletePod
+)
+
+const (
+ Recovery = iota
+ Informers
+)
+
+type EventType int
+type EventSource int
+
+type podAsyncEvent struct {
+ eventType EventType
+ pod *v1.Pod
+}
+
+func (p *PodEventHandler) HandleEvent(eventType EventType, source EventSource,
pod *v1.Pod) interfaces.ManagedApp {
Review Comment:
Can we extract everything within the locks into a separate method that does
locking using defer? that method could return a bool indicating whether the
event has been processed. Something like:
```
func (p *PodEventHandler) HandleEvent(eventType EventType, source
EventSource, pod *v1.Pod) interfaces.ManagedApp {
if p.handleRecoveryEvent(eventType, source, pod) {
return nil
}
return p.internalHandle(eventType, source, pod)
}
func (p *PodEventHandler) handleRecoveryEvent(eventType EventType, source
EventSource, pod *v1.Pod) bool {
p.Lock()
defer p.Unlock()
if p.recoveryRunning && source == Informers {
log.Logger().Debug("Storing async event", zap.Int("eventType",
int(eventType)),
zap.String("pod", pod.GetName()))
p.asyncEvents = append(p.asyncEvents, &podAsyncEvent{eventType,
pod})
return true
}
return false
}
```
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