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Merge pull request #103573 from chendave/fix_index

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Fix index out of range if multiple default plugins are overridden
This commit is contained in:
Kubernetes Prow Robot 2021-07-09 08:43:23 -07:00 committed by GitHub
commit 2423813207
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3 changed files with 52 additions and 30 deletions
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24
cmd/kube-scheduler/app/options/configfile.go
View File

@ -87,30 +87,6 @@ func LogOrWriteConfig(fileName string, cfg *config.KubeSchedulerConfiguration, c
}
cfg.Profiles = completedProfiles
if len(fileName) > 0 {
// Since the default component config lists all the default plugins as enabled
// without disabling them, we must explicitly disable all the plugins for each
// extension point using the "*" expression to ensure that the generated config
// file is usable
disabledPlugins := []config.Plugin{{Name: "*"}}
for i := range cfg.Profiles {
if cfg.Profiles[i].Plugins == nil {
continue
}
cfg.Profiles[i].Plugins.QueueSort.Disabled = disabledPlugins
cfg.Profiles[i].Plugins.PreFilter.Disabled = disabledPlugins
cfg.Profiles[i].Plugins.Filter.Disabled = disabledPlugins
cfg.Profiles[i].Plugins.PostFilter.Disabled = disabledPlugins
cfg.Profiles[i].Plugins.PreScore.Disabled = disabledPlugins
cfg.Profiles[i].Plugins.Score.Disabled = disabledPlugins
cfg.Profiles[i].Plugins.Reserve.Disabled = disabledPlugins
cfg.Profiles[i].Plugins.Permit.Disabled = disabledPlugins
cfg.Profiles[i].Plugins.PreBind.Disabled = disabledPlugins
cfg.Profiles[i].Plugins.Bind.Disabled = disabledPlugins
cfg.Profiles[i].Plugins.PostBind.Disabled = disabledPlugins
}
}
buf, err := encodeConfig(cfg)
if err != nil {
return err

18
pkg/scheduler/apis/config/v1beta2/default_plugins.go
View File

@ -156,6 +156,8 @@ type pluginIndex struct {
func mergePluginSet(defaultPluginSet, customPluginSet v1beta2.PluginSet) v1beta2.PluginSet {
disabledPlugins := sets.NewString()
enabledCustomPlugins := make(map[string]pluginIndex)
// replacedPluginIndex is a set of index of plugins, which have replaced the default plugins.
replacedPluginIndex := sets.NewInt()
for _, disabledPlugin := range customPluginSet.Disabled {
disabledPlugins.Insert(disabledPlugin.Name)
}
@ -170,16 +172,22 @@ func mergePluginSet(defaultPluginSet, customPluginSet v1beta2.PluginSet) v1beta2
}
// The default plugin is explicitly re-configured, update the default plugin accordingly.
if customPlugin, ok := enabledCustomPlugins[defaultEnabledPlugin.Name]; ok {
klog.InfoS("Defaut plugin is explicitly re-configured and is overriding.", "plugin", defaultEnabledPlugin.Name)
// update the default plugin in place to preserve order
klog.InfoS("Default plugin is explicitly re-configured; overriding", "plugin", defaultEnabledPlugin.Name)
// Update the default plugin in place to preserve order.
defaultEnabledPlugin = customPlugin.plugin
// kick the plugin from the enabled list of custom plugins
customPluginSet.Enabled = append(customPluginSet.Enabled[:customPlugin.index], customPluginSet.Enabled[customPlugin.index+1:]...)
replacedPluginIndex.Insert(customPlugin.index)
}
enabledPlugins = append(enabledPlugins, defaultEnabledPlugin)
}
}
enabledPlugins = append(enabledPlugins, customPluginSet.Enabled...)
// Append all the custom plugins which haven't replaced any default plugins.
// Note: duplicated custom plugins will still be appended here.
// If so, the instantiation of scheduler framework will detect it and abort.
for index, plugin := range customPluginSet.Enabled {
if !replacedPluginIndex.Has(index) {
enabledPlugins = append(enabledPlugins, plugin)
}
}
return v1beta2.PluginSet{Enabled: enabledPlugins}
}

40
pkg/scheduler/apis/config/v1beta2/default_plugins_test.go
View File

@ -367,6 +367,7 @@ func TestMergePlugins(t *testing.T) {
Filter: v1beta2.PluginSet{
Enabled: []v1beta2.Plugin{
{Name: "Plugin1", Weight: pointer.Int32Ptr(2)},
{Name: "Plugin3", Weight: pointer.Int32Ptr(3)},
},
},
},
@ -374,6 +375,8 @@ func TestMergePlugins(t *testing.T) {
Filter: v1beta2.PluginSet{
Enabled: []v1beta2.Plugin{
{Name: "Plugin1"},
{Name: "Plugin2"},
{Name: "Plugin3"},
},
},
},
@ -381,6 +384,8 @@ func TestMergePlugins(t *testing.T) {
Filter: v1beta2.PluginSet{
Enabled: []v1beta2.Plugin{
{Name: "Plugin1", Weight: pointer.Int32Ptr(2)},
{Name: "Plugin2"},
{Name: "Plugin3", Weight: pointer.Int32Ptr(3)},
},
},
},
@ -391,6 +396,38 @@ func TestMergePlugins(t *testing.T) {
Filter: v1beta2.PluginSet{
Enabled: []v1beta2.Plugin{
{Name: "Plugin2", Weight: pointer.Int32Ptr(2)},
{Name: "Plugin1", Weight: pointer.Int32Ptr(1)},
},
},
},
defaultPlugins: &v1beta2.Plugins{
Filter: v1beta2.PluginSet{
Enabled: []v1beta2.Plugin{
{Name: "Plugin1"},
{Name: "Plugin2"},
{Name: "Plugin3"},
},
},
},
expectedPlugins: &v1beta2.Plugins{
Filter: v1beta2.PluginSet{
Enabled: []v1beta2.Plugin{
{Name: "Plugin1", Weight: pointer.Int32Ptr(1)},
{Name: "Plugin2", Weight: pointer.Int32Ptr(2)},
{Name: "Plugin3"},
},
},
},
},
{
name: "RepeatedCustomPlugin",
customPlugins: &v1beta2.Plugins{
Filter: v1beta2.PluginSet{
Enabled: []v1beta2.Plugin{
{Name: "Plugin1"},
{Name: "Plugin2", Weight: pointer.Int32Ptr(2)},
{Name: "Plugin3"},
{Name: "Plugin2", Weight: pointer.Int32Ptr(4)},
},
},
},
@ -407,8 +444,9 @@ func TestMergePlugins(t *testing.T) {
Filter: v1beta2.PluginSet{
Enabled: []v1beta2.Plugin{
{Name: "Plugin1"},
{Name: "Plugin2", Weight: pointer.Int32Ptr(2)},
{Name: "Plugin2", Weight: pointer.Int32Ptr(4)},
{Name: "Plugin3"},
{Name: "Plugin2", Weight: pointer.Int32Ptr(2)},
},
},
},