Moved all the common scheduler attributes into base.go

schedulers/base.go

@@ -4,9 +4,34 @@ import (
 	mesos "github.com/mesos/mesos-go/mesosproto"
 	sched "github.com/mesos/mesos-go/scheduler"
 	"log"
+	"bitbucket.org/sunybingcloud/electron/def"
 )
 
-type base struct{}
+type base struct{
+	tasksCreated     int
+	tasksRunning     int
+	tasks            []def.Task
+	metrics          map[string]def.Metric
+	running          map[string]map[string]bool
+	wattsAsAResource bool
+	classMapWatts    bool
+
+	// First set of PCP values are garbage values, signal to logger to start recording when we're
+	// about to schedule a new task
+	RecordPCP bool
+
+	// This channel is closed when the program receives an interrupt,
+	// signalling that the program should shut down.
+	Shutdown chan struct{}
+	// This channel is closed after shutdown is closed, and only when all
+	// outstanding tasks have been cleaned up
+	Done chan struct{}
+
+	// Controls when to shutdown pcp logging
+	PCPLog chan struct{}
+
+	schedTrace *log.Logger
+}
 
 func (s *base) OfferRescinded(_ sched.SchedulerDriver, offerID *mesos.OfferID) {
 	log.Printf("Offer %s rescinded", offerID)

schedulers/binPackSortedWattsSortedOffers.go

@@ -37,29 +37,6 @@ func (s *BinPackSortedWattsSortedOffers) takeOffer(offer *mesos.Offer, task def.
 
 type BinPackSortedWattsSortedOffers struct {
 	base // Type embedded to inherit common functions
-	tasksCreated     int
-	tasksRunning     int
-	tasks            []def.Task
-	metrics          map[string]def.Metric
-	running          map[string]map[string]bool
-	wattsAsAResource bool
-	classMapWatts    bool
-
-	// First set of PCP values are garbage values, signal to logger to start recording when we're
-	// about to schedule a new task
-	RecordPCP bool
-
-	// This channel is closed when the program receives an interrupt,
-	// signalling that the program should shut down.
-	Shutdown chan struct{}
-	// This channel is closed after shutdown is closed, and only when all
-	// outstanding tasks have been cleaned up
-	Done chan struct{}
-
-	// Controls when to shutdown pcp logging
-	PCPLog chan struct{}
-
-	schedTrace *log.Logger
 }
 
 // New electron scheduler
@@ -73,6 +50,7 @@ func NewBinPackSortedWattsSortedOffers(tasks []def.Task, wattsAsAResource bool,
 	}
 
 	s := &BinPackSortedWattsSortedOffers{
+		base: base{
 			tasks:            tasks,
 			wattsAsAResource: wattsAsAResource,
 			classMapWatts:    classMapWatts,
@@ -82,6 +60,7 @@ func NewBinPackSortedWattsSortedOffers(tasks []def.Task, wattsAsAResource bool,
 			running:          make(map[string]map[string]bool),
 			RecordPCP:        false,
 			schedTrace:       log.New(logFile, "", log.LstdFlags),
+		},
 	}
 	return s
 }

schedulers/binpackedpistoncapping.go

@@ -28,34 +28,10 @@ import (
 */
 type BinPackedPistonCapper struct {
 	base        // Type embedded to inherit common functions
-	tasksCreated     int
-	tasksRunning     int
-	tasks            []def.Task
-	metrics          map[string]def.Metric
-	running          map[string]map[string]bool
 	taskMonitor map[string][]def.Task
 	totalPower  map[string]float64
-	wattsAsAResource bool
-	classMapWatts    bool
 	ticker      *time.Ticker
 	isCapping   bool
-
-	// First set of PCP values are garbage values, signal to logger to start recording when we're
-	// about to schedule the new task.
-	RecordPCP bool
-
-	// This channel is closed when the program receives an interrupt,
-	// signalling that the program should shut down.
-	Shutdown chan struct{}
-
-	// This channel is closed after shutdown is closed, and only when all
-	// outstanding tasks have been cleaned up.
-	Done chan struct{}
-
-	// Controls when to shutdown pcp logging.
-	PCPLog chan struct{}
-
-	schedTrace *log.Logger
 }
 
 // New electron scheduler.
@@ -68,6 +44,7 @@ func NewBinPackedPistonCapper(tasks []def.Task, wattsAsAResource bool, schedTrac
 	}
 
 	s := &BinPackedPistonCapper{
+		base: base{
 			tasks:            tasks,
 			wattsAsAResource: wattsAsAResource,
 			classMapWatts:    classMapWatts,
@@ -75,12 +52,13 @@ func NewBinPackedPistonCapper(tasks []def.Task, wattsAsAResource bool, schedTrac
 			Done:             make(chan struct{}),
 			PCPLog:           make(chan struct{}),
 			running:          make(map[string]map[string]bool),
+			RecordPCP:        false,
+			schedTrace:       log.New(logFile, "", log.LstdFlags),
+		},
 		taskMonitor: make(map[string][]def.Task),
 		totalPower:  make(map[string]float64),
-		RecordPCP:        false,
 		ticker:      time.NewTicker(5 * time.Second),
 		isCapping:   false,
-		schedTrace:       log.New(logFile, "", log.LstdFlags),
 	}
 	return s
 }

schedulers/binpacksortedwatts.go

@@ -37,29 +37,6 @@ func (s *BinPackSortedWatts) takeOffer(offer *mesos.Offer, task def.Task) bool {
 
 type BinPackSortedWatts struct {
 	base // Type embedded to inherit common functions
-	tasksCreated     int
-	tasksRunning     int
-	tasks            []def.Task
-	metrics          map[string]def.Metric
-	running          map[string]map[string]bool
-	wattsAsAResource bool
-	classMapWatts    bool
-
-	// First set of PCP values are garbage values, signal to logger to start recording when we're
-	// about to schedule a new task
-	RecordPCP bool
-
-	// This channel is closed when the program receives an interrupt,
-	// signalling that the program should shut down.
-	Shutdown chan struct{}
-	// This channel is closed after shutdown is closed, and only when all
-	// outstanding tasks have been cleaned up
-	Done chan struct{}
-
-	// Controls when to shutdown pcp logging
-	PCPLog chan struct{}
-
-	schedTrace *log.Logger
 }
 
 // New electron scheduler
@@ -72,6 +49,7 @@ func NewBinPackSortedWatts(tasks []def.Task, wattsAsAResource bool, schedTracePr
 	}
 
 	s := &BinPackSortedWatts{
+		base: base{
 			tasks:            tasks,
 			wattsAsAResource: wattsAsAResource,
 			classMapWatts:    classMapWatts,
@@ -81,6 +59,7 @@ func NewBinPackSortedWatts(tasks []def.Task, wattsAsAResource bool, schedTracePr
 			running:          make(map[string]map[string]bool),
 			RecordPCP:        false,
 			schedTrace:       log.New(logFile, "", log.LstdFlags),
+		},
 	}
 	return s
 }

schedulers/bottomHeavy.go

@@ -29,30 +29,7 @@ BinPacking has the most effect when co-scheduling of tasks is increased. Large t
 // electronScheduler implements the Scheduler interface
 type BottomHeavy struct {
 	base                   // Type embedded to inherit common functions
-	tasksCreated           int
-	tasksRunning           int
-	tasks                  []def.Task
-	metrics                map[string]def.Metric
-	running                map[string]map[string]bool
-	wattsAsAResource       bool
-	classMapWatts          bool
 	smallTasks, largeTasks []def.Task
-
-	// First set of PCP values are garbage values, signal to logger to start recording when we're
-	// about to schedule a new task
-	RecordPCP bool
-
-	// This channel is closed when the program receives an interrupt,
-	// signalling that the program should shut down.
-	Shutdown chan struct{}
-	// This channel is closed after shutdown is closed, and only when all
-	// outstanding tasks have been cleaned up
-	Done chan struct{}
-
-	// Controls when to shutdown pcp logging
-	PCPLog chan struct{}
-
-	schedTrace *log.Logger
 }
 
 // New electron scheduler
@@ -68,8 +45,7 @@ func NewBottomHeavy(tasks []def.Task, wattsAsAResource bool, schedTracePrefix st
 	// Classification done based on MMPU watts requirements.
 	mid := int(math.Floor((float64(len(tasks)) / 2.0) + 0.5))
 	s := &BottomHeavy{
-		smallTasks:       tasks[:mid],
+		base: base{
-		largeTasks:       tasks[mid+1:],
 			wattsAsAResource: wattsAsAResource,
 			classMapWatts:    classMapWatts,
 			Shutdown:         make(chan struct{}),
@@ -78,6 +54,9 @@ func NewBottomHeavy(tasks []def.Task, wattsAsAResource bool, schedTracePrefix st
 			running:          make(map[string]map[string]bool),
 			RecordPCP:        false,
 			schedTrace:       log.New(logFile, "", log.LstdFlags),
+		},
+		smallTasks: tasks[:mid],
+		largeTasks: tasks[mid+1:],
 	}
 	return s
 }

schedulers/bpswMaxMin.go

@@ -37,29 +37,6 @@ func (s *BPSWMaxMinWatts) takeOffer(offer *mesos.Offer, task def.Task) bool {
 
 type BPSWMaxMinWatts struct {
 	base //Type embedding to inherit common functions
-	tasksCreated  int
-	tasksRunning  int
-	tasks         []def.Task
-	metrics       map[string]def.Metric
-	running       map[string]map[string]bool
-	wattsAsAResource   bool
-	classMapWatts bool
-
-	// First set of PCP values are garbage values, signal to logger to start recording when we're
-	// about to schedule a new task
-	RecordPCP bool
-
-	// This channel is closed when the program receives an interrupt,
-	// signalling that the program should shut down.
-	Shutdown chan struct{}
-	// This channel is closed after shutdown is closed, and only when all
-	// outstanding tasks have been cleaned up
-	Done chan struct{}
-
-	// Controls when to shutdown pcp logging
-	PCPLog chan struct{}
-
-	schedTrace *log.Logger
 }
 
 // New electron scheduler
@@ -72,6 +49,7 @@ func NewBPMaxMinWatts(tasks []def.Task, wattsAsAResource bool, schedTracePrefix
 	}
 
 	s := &BPSWMaxMinWatts{
+		base: base{
 			tasks:            tasks,
 			wattsAsAResource: wattsAsAResource,
 			classMapWatts:    classMapWatts,
@@ -81,6 +59,7 @@ func NewBPMaxMinWatts(tasks []def.Task, wattsAsAResource bool, schedTracePrefix
 			running:          make(map[string]map[string]bool),
 			RecordPCP:        false,
 			schedTrace:       log.New(logFile, "", log.LstdFlags),
+		},
 	}
 	return s
 }

schedulers/bpswMaxMinPistonCapping.go

@@ -42,33 +42,10 @@ func (s *BPSWMaxMinPistonCapping) takeOffer(offer *mesos.Offer, task def.Task) b
 
 type BPSWMaxMinPistonCapping struct {
 	base        //Type embedding to inherit common functions
-	tasksCreated     int
-	tasksRunning     int
-	tasks            []def.Task
-	metrics          map[string]def.Metric
-	running          map[string]map[string]bool
 	taskMonitor map[string][]def.Task
 	totalPower  map[string]float64
-	wattsAsAResource bool
-	classMapWatts    bool
 	ticker      *time.Ticker
 	isCapping   bool
-
-	// First set of PCP values are garbage values, signal to logger to start recording when we're
-	// about to schedule a new task
-	RecordPCP bool
-
-	// This channel is closed when the program receives an interrupt,
-	// signalling that the program should shut down.
-	Shutdown chan struct{}
-	// This channel is closed after shutdown is closed, and only when all
-	// outstanding tasks have been cleaned up
-	Done chan struct{}
-
-	// Controls when to shutdown pcp logging
-	PCPLog chan struct{}
-
-	schedTrace *log.Logger
 }
 
 // New electron scheduler
@@ -82,6 +59,7 @@ func NewBPSWMaxMinPistonCapping(tasks []def.Task, wattsAsAResource bool, schedTr
 	}
 
 	s := &BPSWMaxMinPistonCapping{
+		base: base{
 			tasks:            tasks,
 			wattsAsAResource: wattsAsAResource,
 			classMapWatts:    classMapWatts,
@@ -89,12 +67,13 @@ func NewBPSWMaxMinPistonCapping(tasks []def.Task, wattsAsAResource bool, schedTr
 			Done:             make(chan struct{}),
 			PCPLog:           make(chan struct{}),
 			running:          make(map[string]map[string]bool),
+			RecordPCP:        false,
+			schedTrace:       log.New(logFile, "", log.LstdFlags),
+		},
 		taskMonitor: make(map[string][]def.Task),
 		totalPower:  make(map[string]float64),
-		RecordPCP:        false,
 		ticker:      time.NewTicker(5 * time.Second),
 		isCapping:   false,
-		schedTrace:       log.New(logFile, "", log.LstdFlags),
 	}
 	return s
 

schedulers/bpswMaxMinProacCC.go

@@ -41,37 +41,14 @@ func (s *BPSWMaxMinProacCC) takeOffer(offer *mesos.Offer, task def.Task) bool {
 
 type BPSWMaxMinProacCC struct {
 	base           // Type embedding to inherit common functions
-	tasksCreated     int
-	tasksRunning     int
-	tasks            []def.Task
-	metrics          map[string]def.Metric
-	running          map[string]map[string]bool
 	taskMonitor    map[string][]def.Task
 	availablePower map[string]float64
 	totalPower     map[string]float64
-	wattsAsAResource bool
-	classMapWatts    bool
 	capper         *powCap.ClusterwideCapper
 	ticker         *time.Ticker
 	recapTicker    *time.Ticker
 	isCapping      bool // indicate whether we are currently performing cluster-wide capping.
 	isRecapping    bool // indicate whether we are currently performing cluster-wide recapping.
-
-	// First set of PCP values are garbage values, signal to logger to start recording when we're
-	// about to schedule a new task
-	RecordPCP bool
-
-	// This channel is closed when the program receives an interrupt,
-	// signalling that the program should shut down
-	Shutdown chan struct{}
-	// This channel is closed after shutdown is closed, and only when all
-	// outstanding tasks have been cleaned up
-	Done chan struct{}
-
-	// Controls when to shutdown pcp logging
-	PCPLog chan struct{}
-
-	schedTrace *log.Logger
 }
 
 // New electron scheduler
@@ -84,6 +61,7 @@ func NewBPSWMaxMinProacCC(tasks []def.Task, wattsAsAResource bool, schedTracePre
 	}
 
 	s := &BPSWMaxMinProacCC{
+		base: base{
 			tasks:            tasks,
 			wattsAsAResource: wattsAsAResource,
 			classMapWatts:    classMapWatts,
@@ -91,16 +69,17 @@ func NewBPSWMaxMinProacCC(tasks []def.Task, wattsAsAResource bool, schedTracePre
 			Done:             make(chan struct{}),
 			PCPLog:           make(chan struct{}),
 			running:          make(map[string]map[string]bool),
+			RecordPCP:        false,
+			schedTrace:       log.New(logFile, "", log.LstdFlags),
+		},
 		taskMonitor:    make(map[string][]def.Task),
 		availablePower: make(map[string]float64),
 		totalPower:     make(map[string]float64),
-		RecordPCP:        false,
 		capper:         powCap.GetClusterwideCapperInstance(),
 		ticker:         time.NewTicker(10 * time.Second),
 		recapTicker:    time.NewTicker(20 * time.Second),
 		isCapping:      false,
 		isRecapping:    false,
-		schedTrace:       log.New(logFile, "", log.LstdFlags),
 	}
 	return s
 }

schedulers/firstfit.go

@@ -37,29 +37,6 @@ func (s *FirstFit) takeOffer(offer *mesos.Offer, task def.Task) bool {
 // electronScheduler implements the Scheduler interface
 type FirstFit struct {
 	base // Type embedded to inherit common functions
-	tasksCreated     int
-	tasksRunning     int
-	tasks            []def.Task
-	metrics          map[string]def.Metric
-	running          map[string]map[string]bool
-	wattsAsAResource bool
-	classMapWatts    bool
-
-	// First set of PCP values are garbage values, signal to logger to start recording when we're
-	// about to schedule a new task
-	RecordPCP bool
-
-	// This channel is closed when the program receives an interrupt,
-	// signalling that the program should shut down.
-	Shutdown chan struct{}
-	// This channel is closed after shutdown is closed, and only when all
-	// outstanding tasks have been cleaned up
-	Done chan struct{}
-
-	// Controls when to shutdown pcp logging
-	PCPLog chan struct{}
-
-	schedTrace *log.Logger
 }
 
 // New electron scheduler
@@ -71,6 +48,7 @@ func NewFirstFit(tasks []def.Task, wattsAsAResource bool, schedTracePrefix strin
 	}
 
 	s := &FirstFit{
+		base: base{
 			tasks:            tasks,
 			wattsAsAResource: wattsAsAResource,
 			classMapWatts:    classMapWatts,
@@ -80,6 +58,7 @@ func NewFirstFit(tasks []def.Task, wattsAsAResource bool, schedTracePrefix strin
 			running:          make(map[string]map[string]bool),
 			RecordPCP:        false,
 			schedTrace:       log.New(logFile, "", log.LstdFlags),
+		},
 	}
 	return s
 }

schedulers/firstfitProacCC.go

@@ -38,38 +38,14 @@ func (s *FirstFitProacCC) takeOffer(offer *mesos.Offer, task def.Task) bool {
 // electronScheduler implements the Scheduler interface.
 type FirstFitProacCC struct {
 	base                                 // Type embedded to inherit common functions
-	tasksCreated     int
-	tasksRunning     int
-	tasks            []def.Task
-	metrics          map[string]def.Metric
-	running          map[string]map[string]bool
 	taskMonitor    map[string][]def.Task // store tasks that are currently running.
 	availablePower map[string]float64    // available power for each node in the cluster.
 	totalPower     map[string]float64    // total power for each node in the cluster.
-	wattsAsAResource bool
-	classMapWatts    bool
 	capper         *powCap.ClusterwideCapper
 	ticker         *time.Ticker
 	recapTicker    *time.Ticker
 	isCapping      bool // indicate whether we are currently performing cluster wide capping.
 	isRecapping    bool // indicate whether we are currently performing cluster wide re-capping.
-
-	// First set of PCP values are garbage values, signal to logger to start recording when we're
-	// about to schedule the new task.
-	RecordPCP bool
-
-	// This channel is closed when the program receives an interrupt,
-	// signalling that the program should shut down.
-	Shutdown chan struct{}
-
-	// This channel is closed after shutdown is closed, and only when all
-	// outstanding tasks have been cleaned up.
-	Done chan struct{}
-
-	// Controls when to shutdown pcp logging.
-	PCPLog chan struct{}
-
-	schedTrace *log.Logger
 }
 
 // New electron scheduler.
@@ -82,6 +58,7 @@ func NewFirstFitProacCC(tasks []def.Task, wattsAsAResource bool, schedTracePrefi
 	}
 
 	s := &FirstFitProacCC{
+		base: base{
 			tasks:            tasks,
 			wattsAsAResource: wattsAsAResource,
 			classMapWatts:    classMapWatts,
@@ -89,16 +66,17 @@ func NewFirstFitProacCC(tasks []def.Task, wattsAsAResource bool, schedTracePrefi
 			Done:             make(chan struct{}),
 			PCPLog:           make(chan struct{}),
 			running:          make(map[string]map[string]bool),
+			RecordPCP:        false,
+			schedTrace:       log.New(logFile, "", log.LstdFlags),
+		},
 		taskMonitor:    make(map[string][]def.Task),
 		availablePower: make(map[string]float64),
 		totalPower:     make(map[string]float64),
-		RecordPCP:        false,
 		capper:         powCap.GetClusterwideCapperInstance(),
 		ticker:         time.NewTicker(10 * time.Second),
 		recapTicker:    time.NewTicker(20 * time.Second),
 		isCapping:      false,
 		isRecapping:    false,
-		schedTrace:       log.New(logFile, "", log.LstdFlags),
 	}
 	return s
 }

schedulers/firstfitSortedOffers.go

@@ -38,29 +38,6 @@ func (s *FirstFitSortedOffers) takeOffer(offer *mesos.Offer, task def.Task) bool
 // electronScheduler implements the Scheduler interface
 type FirstFitSortedOffers struct {
 	base // Type embedded to inherit common functions
-	tasksCreated     int
-	tasksRunning     int
-	tasks            []def.Task
-	metrics          map[string]def.Metric
-	running          map[string]map[string]bool
-	wattsAsAResource bool
-	classMapWatts    bool
-
-	// First set of PCP values are garbage values, signal to logger to start recording when we're
-	// about to schedule a new task
-	RecordPCP bool
-
-	// This channel is closed when the program receives an interrupt,
-	// signalling that the program should shut down.
-	Shutdown chan struct{}
-	// This channel is closed after shutdown is closed, and only when all
-	// outstanding tasks have been cleaned up
-	Done chan struct{}
-
-	// Controls when to shutdown pcp logging
-	PCPLog chan struct{}
-
-	schedTrace *log.Logger
 }
 
 // New electron scheduler
@@ -72,6 +49,7 @@ func NewFirstFitSortedOffers(tasks []def.Task, wattsAsAResource bool, schedTrace
 	}
 
 	s := &FirstFitSortedOffers{
+		base: base{
 			tasks:            tasks,
 			wattsAsAResource: wattsAsAResource,
 			classMapWatts:    classMapWatts,
@@ -81,6 +59,7 @@ func NewFirstFitSortedOffers(tasks []def.Task, wattsAsAResource bool, schedTrace
 			running:          make(map[string]map[string]bool),
 			RecordPCP:        false,
 			schedTrace:       log.New(logFile, "", log.LstdFlags),
+		},
 	}
 	return s
 }

schedulers/firstfitSortedWattsProacCC.go

@@ -49,38 +49,14 @@ func (s *FirstFitSortedWattsProacCC) takeOffer(offer *mesos.Offer, task def.Task
 // electronScheduler implements the Scheduler interface
 type FirstFitSortedWattsProacCC struct {
 	base                                 // Type embedded to inherit common functions
-	tasksCreated     int
-	tasksRunning     int
-	tasks            []def.Task
-	metrics          map[string]def.Metric
-	running          map[string]map[string]bool
 	taskMonitor    map[string][]def.Task // store tasks that are currently running.
 	availablePower map[string]float64    // available power for each node in the cluster.
 	totalPower     map[string]float64    // total power for each node in the cluster.
-	wattsAsAResource bool
-	classMapWatts    bool
 	capper         *powCap.ClusterwideCapper
 	ticker         *time.Ticker
 	recapTicker    *time.Ticker
 	isCapping      bool // indicate whether we are currently performing cluster wide capping.
 	isRecapping    bool // indicate whether we are currently performing cluster wide re-capping.
-
-	// First set of PCP values are garbage values, signal to logger to start recording when we're
-	// about to schedule the new task.
-	RecordPCP bool
-
-	// This channel is closed when the program receives an interrupt,
-	// signalling that the program should shut down.
-	Shutdown chan struct{}
-
-	// This channel is closed after shutdown is closed, and only when all
-	// outstanding tasks have been cleaned up.
-	Done chan struct{}
-
-	// Controls when to shutdown pcp logging.
-	PCPLog chan struct{}
-
-	schedTrace *log.Logger
 }
 
 // New electron scheduler.
@@ -96,6 +72,7 @@ func NewFirstFitSortedWattsProacCC(tasks []def.Task, wattsAsAResource bool, sche
 	}
 
 	s := &FirstFitSortedWattsProacCC{
+		base: base{
 			tasks:            tasks,
 			wattsAsAResource: wattsAsAResource,
 			classMapWatts:    classMapWatts,
@@ -103,16 +80,17 @@ func NewFirstFitSortedWattsProacCC(tasks []def.Task, wattsAsAResource bool, sche
 			Done:             make(chan struct{}),
 			PCPLog:           make(chan struct{}),
 			running:          make(map[string]map[string]bool),
+			RecordPCP:        false,
+			schedTrace:       log.New(logFile, "", log.LstdFlags),
+		},
 		taskMonitor:    make(map[string][]def.Task),
 		availablePower: make(map[string]float64),
 		totalPower:     make(map[string]float64),
-		RecordPCP:        false,
 		capper:         powCap.GetClusterwideCapperInstance(),
 		ticker:         time.NewTicker(10 * time.Second),
 		recapTicker:    time.NewTicker(20 * time.Second),
 		isCapping:      false,
 		isRecapping:    false,
-		schedTrace:       log.New(logFile, "", log.LstdFlags),
 	}
 	return s
 }

schedulers/firstfitSortedWattsSortedOffers.go

@@ -38,29 +38,6 @@ func (s *FirstFitSortedWattsSortedOffers) takeOffer(offer *mesos.Offer, task def
 // electronScheduler implements the Scheduler interface
 type FirstFitSortedWattsSortedOffers struct {
 	base // Type embedded to inherit common functions
-	tasksCreated     int
-	tasksRunning     int
-	tasks            []def.Task
-	metrics          map[string]def.Metric
-	running          map[string]map[string]bool
-	wattsAsAResource bool
-	classMapWatts    bool
-
-	// First set of PCP values are garbage values, signal to logger to start recording when we're
-	// about to schedule a new task
-	RecordPCP bool
-
-	// This channel is closed when the program receives an interrupt,
-	// signalling that the program should shut down.
-	Shutdown chan struct{}
-	// This channel is closed after shutdown is closed, and only when all
-	// outstanding tasks have been cleaned up
-	Done chan struct{}
-
-	// Controls when to shutdown pcp logging
-	PCPLog chan struct{}
-
-	schedTrace *log.Logger
 }
 
 // New electron scheduler
@@ -76,6 +53,7 @@ func NewFirstFitSortedWattsSortedOffers(tasks []def.Task, wattsAsAResource bool,
 	}
 
 	s := &FirstFitSortedWattsSortedOffers{
+		base: base{
 			tasks:            tasks,
 			wattsAsAResource: wattsAsAResource,
 			classMapWatts:    classMapWatts,
@@ -85,6 +63,7 @@ func NewFirstFitSortedWattsSortedOffers(tasks []def.Task, wattsAsAResource bool,
 			running:          make(map[string]map[string]bool),
 			RecordPCP:        false,
 			schedTrace:       log.New(logFile, "", log.LstdFlags),
+		},
 	}
 	return s
 }

schedulers/firstfitsortedwatts.go

@@ -38,29 +38,6 @@ func (s *FirstFitSortedWatts) takeOffer(offer *mesos.Offer, task def.Task) bool
 // electronScheduler implements the Scheduler interface
 type FirstFitSortedWatts struct {
 	base // Type embedded to inherit common functions
-	tasksCreated     int
-	tasksRunning     int
-	tasks            []def.Task
-	metrics          map[string]def.Metric
-	running          map[string]map[string]bool
-	wattsAsAResource bool
-	classMapWatts    bool
-
-	// First set of PCP values are garbage values, signal to logger to start recording when we're
-	// about to schedule a new task
-	RecordPCP bool
-
-	// This channel is closed when the program receives an interrupt,
-	// signalling that the program should shut down.
-	Shutdown chan struct{}
-	// This channel is closed after shutdown is closed, and only when all
-	// outstanding tasks have been cleaned up
-	Done chan struct{}
-
-	// Controls when to shutdown pcp logging
-	PCPLog chan struct{}
-
-	schedTrace *log.Logger
 }
 
 // New electron scheduler
@@ -74,6 +51,7 @@ func NewFirstFitSortedWatts(tasks []def.Task, wattsAsAResource bool, schedTraceP
 	}
 
 	s := &FirstFitSortedWatts{
+		base: base{
 			tasks:            tasks,
 			wattsAsAResource: wattsAsAResource,
 			classMapWatts:    classMapWatts,
@@ -83,6 +61,7 @@ func NewFirstFitSortedWatts(tasks []def.Task, wattsAsAResource bool, schedTraceP
 			running:          make(map[string]map[string]bool),
 			RecordPCP:        false,
 			schedTrace:       log.New(logFile, "", log.LstdFlags),
+		},
 	}
 	return s
 }

schedulers/firstfitwattsonly.go

@@ -36,29 +36,6 @@ func (s *FirstFitWattsOnly) takeOffer(offer *mesos.Offer, task def.Task) bool {
 
 type FirstFitWattsOnly struct {
 	base // Type embedded to inherit common functions
-	tasksCreated     int
-	tasksRunning     int
-	tasks            []def.Task
-	metrics          map[string]def.Metric
-	running          map[string]map[string]bool
-	wattsAsAResource bool
-	classMapWatts    bool
-
-	// First set of PCP values are garbage values, signal to logger to start recording when we're
-	// about to schedule a new task
-	RecordPCP bool
-
-	// This channel is closed when the program receives an interrupt,
-	// signalling that the program should shut down.
-	Shutdown chan struct{}
-	// This channel is closed after shutdown is closed, and only when all
-	// outstanding tasks have been cleaned up
-	Done chan struct{}
-
-	// Controls when to shutdown pcp logging
-	PCPLog chan struct{}
-
-	schedTrace *log.Logger
 }
 
 // New electron scheduler
@@ -70,6 +47,7 @@ func NewFirstFitWattsOnly(tasks []def.Task, wattsAsAResource bool, schedTracePre
 	}
 
 	s := &FirstFitWattsOnly{
+		base: base{
 			tasks:            tasks,
 			wattsAsAResource: wattsAsAResource,
 			classMapWatts:    classMapWatts,
@@ -79,6 +57,7 @@ func NewFirstFitWattsOnly(tasks []def.Task, wattsAsAResource bool, schedTracePre
 			running:          make(map[string]map[string]bool),
 			RecordPCP:        false,
 			schedTrace:       log.New(logFile, "", log.LstdFlags),
+		},
 	}
 	return s
 }

schedulers/topHeavy.go

@@ -29,30 +29,7 @@ starvation of power intensive tasks.
 // electronScheduler implements the Scheduler interface
 type TopHeavy struct {
 	base                   // Type embedded to inherit common functions
-	tasksCreated           int
-	tasksRunning           int
-	tasks                  []def.Task
-	metrics                map[string]def.Metric
-	running                map[string]map[string]bool
-	wattsAsAResource       bool
-	classMapWatts          bool
 	smallTasks, largeTasks []def.Task
-
-	// First set of PCP values are garbage values, signal to logger to start recording when we're
-	// about to schedule a new task
-	RecordPCP bool
-
-	// This channel is closed when the program receives an interrupt,
-	// signalling that the program should shut down.
-	Shutdown chan struct{}
-	// This channel is closed after shutdown is closed, and only when all
-	// outstanding tasks have been cleaned up
-	Done chan struct{}
-
-	// Controls when to shutdown pcp logging
-	PCPLog chan struct{}
-
-	schedTrace *log.Logger
 }
 
 // New electron scheduler
@@ -68,8 +45,7 @@ func NewTopHeavy(tasks []def.Task, wattsAsAResource bool, schedTracePrefix strin
 	// Classification done based on MMPU watts requirements.
 	mid := int(math.Floor((float64(len(tasks)) / 2.0) + 0.5))
 	s := &TopHeavy{
-		smallTasks:       tasks[:mid],
+		base: base{
-		largeTasks:       tasks[mid+1:],
 			wattsAsAResource: wattsAsAResource,
 			classMapWatts:    classMapWatts,
 			Shutdown:         make(chan struct{}),
@@ -78,6 +54,9 @@ func NewTopHeavy(tasks []def.Task, wattsAsAResource bool, schedTracePrefix strin
 			running:          make(map[string]map[string]bool),
 			RecordPCP:        false,
 			schedTrace:       log.New(logFile, "", log.LstdFlags),
+		},
+		smallTasks: tasks[:mid],
+		largeTasks: tasks[mid+1:],
 	}
 	return s
 }