add arguments for action

pkg/scheduler/actions/allocate/allocate_test.go

@@ -202,7 +202,7 @@ func TestAllocate(t *testing.T) {
 						},
 					},
 				},
-			})
+			}, nil)
 			defer framework.CloseSession(ssn)
 
 			allocate.Execute(ssn)

pkg/scheduler/actions/enqueue/enqueue.go

@@ -25,6 +25,18 @@ import (
 	"volcano.sh/volcano/pkg/scheduler/util"
 )
 
+const (
+	// overCommitFactor is resource overCommit factor for enqueue action
+	// It determines the number of `pending` pods that the scheduler will tolerate
+	// when the resources of the cluster is insufficient
+	overCommitFactor = "overcommit-factor"
+)
+
+var (
+	// defaultOverCommitFactor defines the default overCommit resource factor for enqueue action
+	defaultOverCommitFactor = 1.2
+)
+
 type enqueueAction struct {
 	ssn *framework.Session
 }
@@ -77,7 +89,7 @@ func (enqueue *enqueueAction) Execute(ssn *framework.Session) {
 	emptyRes := api.EmptyResource()
 	nodesIdleRes := api.EmptyResource()
 	for _, node := range ssn.Nodes {
-		nodesIdleRes.Add(node.Allocatable.Clone().Multi(1.2).Sub(node.Used))
+		nodesIdleRes.Add(node.Allocatable.Clone().Multi(enqueue.getOverCommitFactor(ssn)).Sub(node.Used))
 	}
 
 	for {
@@ -122,3 +134,13 @@ func (enqueue *enqueueAction) Execute(ssn *framework.Session) {
 }
 
 func (enqueue *enqueueAction) UnInitialize() {}
+
+func (enqueue *enqueueAction) getOverCommitFactor(ssn *framework.Session) float64 {
+	factor := defaultOverCommitFactor
+	arg := framework.GetArgOfActionFromConf(ssn.Configurations, enqueue.Name())
+	if arg != nil {
+		arg.GetFloat64(&factor, overCommitFactor)
+	}
+
+	return factor
+}

pkg/scheduler/actions/enqueue/enqueue_test.go

@@ -0,0 +1,53 @@
+package enqueue
+
+import (
+	"testing"
+
+	"volcano.sh/volcano/pkg/scheduler/conf"
+	"volcano.sh/volcano/pkg/scheduler/framework"
+)
+
+func TestGetOverCommitFactor(t *testing.T) {
+	cases := []struct {
+		name          string
+		ssn           *framework.Session
+		expectedValue float64
+	}{
+		{
+			name: "arguments of action not exist",
+			ssn: &framework.Session{
+				Configurations: []conf.Configuration{
+					{
+						Name: "allocate",
+						Arguments: map[string]string{
+							"placeholder": "placeholder",
+						},
+					},
+				},
+			},
+			expectedValue: 1.2,
+		},
+		{
+			name: "arguments of action exist",
+			ssn: &framework.Session{
+				Configurations: []conf.Configuration{
+					{
+						Name: "enqueue",
+						Arguments: map[string]string{
+							overCommitFactor: "2",
+						},
+					},
+				},
+			},
+			expectedValue: 2,
+		},
+	}
+
+	enqueue := New()
+	for index, c := range cases {
+		factor := enqueue.getOverCommitFactor(c.ssn)
+		if factor != c.expectedValue {
+			t.Errorf("index %d, case %s, expected %v, but got %v", index, c.name, c.expectedValue, factor)
+		}
+	}
+}

pkg/scheduler/actions/preempt/preempt_test.go

@@ -282,7 +282,7 @@ func TestPreempt(t *testing.T) {
 						},
 					},
 				},
-			})
+			}, nil)
 			defer framework.CloseSession(ssn)
 
 			preempt.Execute(ssn)

pkg/scheduler/actions/reclaim/reclaim_test.go

@@ -150,7 +150,7 @@ func TestReclaim(t *testing.T) {
 					},
 				},
 			},
-		})
+		}, nil)
 		defer framework.CloseSession(ssn)
 
 		reclaim.Execute(ssn)

pkg/scheduler/conf/scheduler_conf.go

@@ -22,13 +22,23 @@ type SchedulerConfiguration struct {
 	Actions string `yaml:"actions"`
 	// Tiers defines plugins in different tiers
 	Tiers []Tier `yaml:"tiers"`
+	// Configurations is configuration for actions
+	Configurations []Configuration `yaml:"configurations"`
 }
 
 // Tier defines plugin tier
 type Tier struct {
 	Plugins []PluginOption `yaml:"plugins"`
 }
 
+// Configuration is configuration of action
+type Configuration struct {
+	// Name is name of action
+	Name string `yaml:"name"`
+	// Arguments defines the different arguments that can be given to specified action
+	Arguments map[string]string `yaml:"arguments"`
+}
+
 // PluginOption defines the options of plugin
 type PluginOption struct {
 	// The name of Plugin

pkg/scheduler/framework/arguments.go

@@ -19,13 +19,15 @@ package framework
 import (
 	"strconv"
 
+	"volcano.sh/volcano/pkg/scheduler/conf"
+
 	"k8s.io/klog"
 )
 
 // Arguments map
 type Arguments map[string]string
 
-//GetInt get the integer value from string
+// GetInt get the integer value from string
 func (a Arguments) GetInt(ptr *int, key string) {
 	if ptr == nil {
 		return
@@ -45,7 +47,27 @@ func (a Arguments) GetInt(ptr *int, key string) {
 	*ptr = value
 }
 
-//GetBool get the bool value from string
+// GetFloat64 get the float64 value from string
+func (a Arguments) GetFloat64(ptr *float64, key string) {
+	if ptr == nil {
+		return
+	}
+
+	argv, ok := a[key]
+	if !ok || len(argv) == 0 {
+		return
+	}
+
+	value, err := strconv.ParseFloat(argv, 64)
+	if err != nil {
+		klog.Warningf("Could not parse argument: %s for key %s, with err %v", argv, key, err)
+		return
+	}
+
+	*ptr = value
+}
+
+// GetBool get the bool value from string
 func (a Arguments) GetBool(ptr *bool, key string) {
 	if ptr == nil {
 		return
@@ -64,3 +86,14 @@ func (a Arguments) GetBool(ptr *bool, key string) {
 
 	*ptr = value
 }
+
+// GetArgOfActionFromConf return argument of action reading from configuration of schedule
+func GetArgOfActionFromConf(configurations []conf.Configuration, actionName string) Arguments {
+	for _, c := range configurations {
+		if c.Name == actionName {
+			return c.Arguments
+		}
+	}
+
+	return nil
+}

pkg/scheduler/framework/arguments_test.go

@@ -17,7 +17,10 @@ limitations under the License.
 package framework
 
 import (
+	"reflect"
 	"testing"
+
+	"volcano.sh/volcano/pkg/scheduler/conf"
 )
 
 type GetIntTestCases struct {
@@ -74,3 +77,111 @@ func TestArgumentsGetInt(t *testing.T) {
 		}
 	}
 }
+
+func TestArgumentsGetFloat64(t *testing.T) {
+	key1 := "float64key"
+
+	cases := []struct {
+		name        string
+		arg         Arguments
+		key         string
+		baseValue   float64
+		expectValue float64
+	}{
+		{
+			name: "key not exist",
+			arg: Arguments{
+				"anotherKey": "12",
+			},
+			key:         key1,
+			baseValue:   1.2,
+			expectValue: 1.2,
+		},
+		{
+			name: "key exist",
+			arg: Arguments{
+				key1: "1.5",
+			},
+			key:         key1,
+			baseValue:   1.2,
+			expectValue: 1.5,
+		},
+		{
+			name: "value of key invalid",
+			arg: Arguments{
+				key1: "errorValue",
+			},
+			key:         key1,
+			baseValue:   1.2,
+			expectValue: 1.2,
+		},
+		{
+			name: "value of key null",
+			arg: Arguments{
+				key1: "",
+			},
+			key:         key1,
+			baseValue:   1.2,
+			expectValue: 1.2,
+		},
+	}
+
+	for index, c := range cases {
+		baseValue := c.baseValue
+		c.arg.GetFloat64(&baseValue, c.key)
+		if baseValue != c.expectValue {
+			t.Errorf("index %d, case %s, value should be %v, but not %v", index, c.name, c.expectValue, baseValue)
+		}
+	}
+}
+
+func TestGetArgOfActionFromConf(t *testing.T) {
+	cases := []struct {
+		name              string
+		configurations    []conf.Configuration
+		action            string
+		expectedArguments Arguments
+	}{
+		{
+			name: "action exist in configurations",
+			configurations: []conf.Configuration{
+				{
+					Name: "enqueue",
+					Arguments: map[string]string{
+						"overCommitFactor": "1.5",
+					},
+				},
+				{
+					Name: "allocate",
+					Arguments: map[string]string{
+						"placeholde": "placeholde",
+					},
+				},
+			},
+			action: "enqueue",
+			expectedArguments: map[string]string{
+				"overCommitFactor": "1.5",
+			},
+		},
+		{
+			name: "action not exist in configurations",
+			configurations: []conf.Configuration{
+				{
+					Name: "enqueue",
+					Arguments: map[string]string{
+						"overCommitFactor": "1.5",
+					},
+				},
+			},
+			action:            "allocate",
+			expectedArguments: nil,
+		},
+	}
+
+	for index, c := range cases {
+		arg := GetArgOfActionFromConf(c.configurations, c.action)
+		if false == reflect.DeepEqual(arg, c.expectedArguments) {
+			t.Errorf("index %d, case %s,expected %v, but got %v", index, c.name, c.expectedArguments, arg)
+		}
+	}
+}

pkg/scheduler/framework/framework.go

@@ -27,9 +27,10 @@ import (
 )
 
 // OpenSession start the session
-func OpenSession(cache cache.Cache, tiers []conf.Tier) *Session {
+func OpenSession(cache cache.Cache, tiers []conf.Tier, configurations []conf.Configuration) *Session {
 	ssn := openSession(cache)
 	ssn.Tiers = tiers
+	ssn.Configurations = configurations
 
 	for _, tier := range tiers {
 		for _, plugin := range tier.Plugins {

pkg/scheduler/framework/session.go

@@ -45,8 +45,9 @@ type Session struct {
 	Queues        map[api.QueueID]*api.QueueInfo
 	NamespaceInfo map[api.NamespaceName]*api.NamespaceInfo
 
-	Backlog []*api.JobInfo
-	Tiers   []conf.Tier
+	Backlog        []*api.JobInfo
+	Tiers          []conf.Tier
+	Configurations []conf.Configuration
 
 	plugins           map[string]Plugin
 	eventHandlers     []*EventHandler

pkg/scheduler/plugins/binpack/binpack_test.go

@@ -269,7 +269,7 @@ func TestNode(t *testing.T) {
 					},
 				},
 			},
-		})
+		}, nil)
 		defer framework.CloseSession(ssn)
 
 		for _, job := range ssn.Jobs {

pkg/scheduler/scheduler.go

@@ -36,6 +36,7 @@ type Scheduler struct {
 	config         *rest.Config
 	actions        []framework.Action
 	plugins        []conf.Tier
+	configurations []conf.Configuration
 	schedulerConf  string
 	schedulePeriod time.Duration
 }
@@ -75,7 +76,7 @@ func (pc *Scheduler) runOnce() {
 
 	pc.loadSchedulerConf()
 
-	ssn := framework.OpenSession(pc.cache, pc.plugins)
+	ssn := framework.OpenSession(pc.cache, pc.plugins, pc.configurations)
 	defer framework.CloseSession(ssn)
 
 	for _, action := range pc.actions {
@@ -98,7 +99,7 @@ func (pc *Scheduler) loadSchedulerConf() {
 		}
 	}
 
-	pc.actions, pc.plugins, err = loadSchedulerConf(schedConf)
+	pc.actions, pc.plugins, pc.configurations, err = loadSchedulerConf(schedConf)
 	if err != nil {
 		panic(err)
 	}