Used WithField() and Logf() where required.

Used elektronLogger#WithField(...) for single key-value pair.
Used elektronLogger#Logf(...) where formatted string is required.

powerCap/extrema.go

@@ -111,8 +111,10 @@ func StartPCPLogAndExtremaDynamicCap(quit chan struct{}, logging *bool, hiThresh
 					powerHistories[host].Value = power
 					powerHistories[host] = powerHistories[host].Next()
 
-					elekLog.WithFields(log.Fields{"Host": fmt.Sprintf("%s", indexToHost[powerIndex]),
+					elekLog.WithFields(log.Fields{
-						"Power": fmt.Sprintf("%f", (power * pcp.RAPLUnits))}).Log(CONSOLE, log.InfoLevel, "")
+						"Host":  indexToHost[powerIndex],
+						"Power": fmt.Sprintf("%f", power*pcp.RAPLUnits),
+					}).Log(CONSOLE, log.InfoLevel, "")
 
 					totalPower += power
 				}
@@ -123,12 +125,13 @@ func StartPCPLogAndExtremaDynamicCap(quit chan struct{}, logging *bool, hiThresh
 
 				clusterMean := pcp.AverageClusterPowerHistory(clusterPowerHist)
 
-				elekLog.WithFields(log.Fields{"Total power": fmt.Sprintf("%f %d", clusterPower, clusterPowerHist.Len()),
+				elekLog.WithFields(log.Fields{
-					"Sec Avg": fmt.Sprintf("%f", clusterMean)}).Log(CONSOLE, log.InfoLevel, "")
+					"Total power": fmt.Sprintf("%f %d Sec", clusterPower, clusterPowerHist.Len()),
+					"Avg":         fmt.Sprintf("%f", clusterMean),
+				}).Log(CONSOLE, log.InfoLevel, "")
 
 				if clusterMean > hiThreshold {
-					elekLog.Log(CONSOLE,
+					elekLog.Log(CONSOLE, log.InfoLevel, "Need to cap a node")
-						log.InfoLevel, "Need to cap a node")
 					// Create statics for all victims and choose one to cap
 					victims := make([]pcp.Victim, 0, 8)
 
@@ -149,12 +152,10 @@ func StartPCPLogAndExtremaDynamicCap(quit chan struct{}, logging *bool, hiThresh
 						if !cappedHosts[victim.Host] {
 							cappedHosts[victim.Host] = true
 							orderCapped = append(orderCapped, victim.Host)
-							elekLog.WithFields(log.Fields{"Capping Victim": fmt.Sprintf("%s", victim.Host),
+							elekLog.WithField("Avg. Wattage",
-								"Avg. Wattage": fmt.Sprintf("%f", victim.Watts*pcp.RAPLUnits)}).Log(CONSOLE, log.InfoLevel, "")
+								fmt.Sprintf("%f", victim.Watts*pcp.RAPLUnits)).Logf(CONSOLE, log.InfoLevel, "Capping Victim %s", victim.Host)
 							if err := rapl.Cap(victim.Host, "rapl", 50); err != nil {
-								elekLog.Log(CONSOLE,
+								elekLog.Log(CONSOLE, log.ErrorLevel, "Error capping host")
-									log.ErrorLevel,
-									"Error capping host")
 							}
 							break // Only cap one machine at at time.
 						}
@@ -167,8 +168,7 @@ func StartPCPLogAndExtremaDynamicCap(quit chan struct{}, logging *bool, hiThresh
 						orderCapped = orderCapped[:len(orderCapped)-1]
 						cappedHosts[host] = false
 						// User RAPL package to send uncap.
-						log.Printf("Uncapping host %s", host)
+						elekLog.Logf(CONSOLE, log.InfoLevel, "Uncapping host %s", host)
-						elekLog.WithFields(log.Fields{"Uncapped host": host}).Log(CONSOLE, log.InfoLevel, "")
 						if err := rapl.Cap(host, "rapl", 100); err != nil {
 							elekLog.Log(CONSOLE, log.ErrorLevel, "Error capping host")
 						}

powerCap/progressiveExtrema.go

@@ -126,8 +126,10 @@ func StartPCPLogAndProgressiveExtremaCap(quit chan struct{}, logging *bool, hiTh
 					powerHistories[host].Value = power
 					powerHistories[host] = powerHistories[host].Next()
 
-					elekLog.WithFields(log.Fields{"Host": fmt.Sprintf("%s", indexToHost[powerIndex]),
+					elekLog.WithFields(log.Fields{
-						"Power": fmt.Sprintf("%f", (power * pcp.RAPLUnits))}).Log(CONSOLE, log.InfoLevel, "")
+						"Host":  indexToHost[powerIndex],
+						"Power": fmt.Sprintf("%f", power*pcp.RAPLUnits),
+					}).Log(CONSOLE, log.InfoLevel, "")
 					totalPower += power
 				}
 				clusterPower := totalPower * pcp.RAPLUnits
@@ -137,15 +139,16 @@ func StartPCPLogAndProgressiveExtremaCap(quit chan struct{}, logging *bool, hiTh
 
 				clusterMean := pcp.AverageClusterPowerHistory(clusterPowerHist)
 
-				elekLog.WithFields(log.Fields{"Total power": fmt.Sprintf("%f %d", clusterPower, clusterPowerHist.Len()),
+				elekLog.WithFields(log.Fields{
-					"Sec Avg": fmt.Sprintf("%f", clusterMean)}).Log(CONSOLE, log.InfoLevel, "")
+					"Total power": fmt.Sprintf("%f %d Sec", clusterPower, clusterPowerHist.Len()),
+					"Avg":         fmt.Sprintf("%f", clusterMean),
+				}).Log(CONSOLE, log.InfoLevel, "")
 
 				if clusterMean >= hiThreshold {
 					elekLog.Log(CONSOLE, log.InfoLevel, "Need to cap a node")
+					elekLog.Logf(CONSOLE, log.InfoLevel, "Cap values of capped victims %v", cappedVictims)
+					elekLog.Logf(CONSOLE, log.InfoLevel, "Cap values of victims to uncap %v", orderCappedVictims)
 
-					elekLog.WithFields(log.Fields{"Cap values of capped victims": fmt.Sprintf("%v", cappedVictims)}).Log(CONSOLE, log.InfoLevel, "")
-
-					elekLog.WithFields(log.Fields{"Cap values of victims to uncap": fmt.Sprintf("%v", orderCappedVictims)}).Log(CONSOLE, log.InfoLevel, "")
 					// Create statics for all victims and choose one to cap
 					victims := make([]pcp.Victim, 0, 8)
 
@@ -173,7 +176,7 @@ func StartPCPLogAndProgressiveExtremaCap(quit chan struct{}, logging *bool, hiTh
 							// Need to cap this victim.
 							if err := rapl.Cap(victims[i].Host, "rapl", 50.0); err != nil {
 
-								elekLog.WithFields(log.Fields{"Error capping host": fmt.Sprintf("%s", victims[i].Host)}).Log(CONSOLE, log.ErrorLevel, "")
+								elekLog.Logf(CONSOLE, log.ErrorLevel, "Error capping host %s", victims[i].Host)
 							} else {
 
 								elekLog.Logf(CONSOLE, log.InfoLevel, "Capped host[%s] at %f", victims[i].Host, 50.0)
@@ -200,11 +203,10 @@ func StartPCPLogAndProgressiveExtremaCap(quit chan struct{}, logging *bool, hiTh
 								newCapValue := getNextCapValue(capValue, 2)
 								if err := rapl.Cap(alreadyCappedHosts[i], "rapl", newCapValue); err != nil {
 
-									elekLog.WithFields(log.Fields{"Error capping host": fmt.Sprintf("%s", alreadyCappedHosts[i])}).Log(CONSOLE, log.ErrorLevel, "")
+									elekLog.Logf(CONSOLE, log.ErrorLevel, "Error capping host %s", alreadyCappedHosts[i])
 								} else {
 									// Successful cap
-									elekLog.Logf(CONSOLE, log.InfoLevel,
+									elekLog.Logf(CONSOLE, log.InfoLevel, "Capped host[%s] at %f", alreadyCappedHosts[i], newCapValue)
-										"Capped host[%s] at %f", alreadyCappedHosts[i], newCapValue)
 									// Checking whether this victim can be capped further
 									if newCapValue <= constants.LowerCapLimit {
 										// Deleting victim from cappedVictims.
@@ -234,8 +236,8 @@ func StartPCPLogAndProgressiveExtremaCap(quit chan struct{}, logging *bool, hiTh
 				} else if clusterMean < loThreshold {
 
 					elekLog.Log(CONSOLE, log.InfoLevel, "Need to uncap a node")
-					elekLog.WithFields(log.Fields{"Cap values of capped victims": fmt.Sprintf("%v", cappedVictims)}).Log(CONSOLE, log.InfoLevel, "")
+					elekLog.Logf(CONSOLE, log.InfoLevel, "Cap values of capped victims - %v", cappedVictims)
-					elekLog.WithFields(log.Fields{"Cap values of victims to uncap": fmt.Sprintf("%v", orderCappedVictims)}).Log(CONSOLE, log.InfoLevel, "")
+					elekLog.Logf(CONSOLE, log.InfoLevel, "Cap values of victims to uncap - %v", orderCappedVictims)
 					if len(orderCapped) > 0 {
 						// We pick the host that is capped the most to uncap.
 						orderCappedToSort := utilities.GetPairList(orderCappedVictims)
@@ -246,7 +248,7 @@ func StartPCPLogAndProgressiveExtremaCap(quit chan struct{}, logging *bool, hiTh
 						newUncapValue := orderCappedVictims[hostToUncap] * 2.0
 						if err := rapl.Cap(hostToUncap, "rapl", newUncapValue); err != nil {
 
-							elekLog.WithFields(log.Fields{"Error uncapping host": fmt.Sprintf("%s", hostToUncap)}).Log(CONSOLE, log.ErrorLevel, "")
+							elekLog.Logf(CONSOLE, log.ErrorLevel, "Error uncapping host %s", hostToUncap)
 						} else {
 							// Successful uncap
 							elekLog.Logf(CONSOLE, log.InfoLevel, "Uncapped host[%s] to %f", hostToUncap, newUncapValue)

scheduler.go

@@ -285,8 +285,10 @@ func main() {
 
 	// Starting the scheduler driver.
 	if status, err := driver.Run(); err != nil {
-		elekLog.WithFields(log.Fields{"status": status.String(), "error": err.Error()}).Log(CONSOLE,
+		elekLog.WithFields(log.Fields{
-			log.ErrorLevel, "Framework stopped ")
+			"status": status.String(),
+			"error":  err.Error(),
+		}).Log(CONSOLE, log.ErrorLevel, "Framework stopped ")
 	}
 	elekLog.Log(CONSOLE, log.InfoLevel, "Exiting...")
 }

schedulers/base.go

@@ -250,30 +250,34 @@ func (s *BaseScheduler) StatusUpdate(driver sched.SchedulerDriver, status *mesos
 
 func (s *BaseScheduler) LogTaskStarting(ts *def.Task, offer *mesos.Offer) {
 	if ts == nil {
-		elekLog.WithFields(log.Fields{"host": fmt.Sprintf("%s", offer.GetHostname())}).Log(CONSOLE, log.InfoLevel, "TASKS   STARTING...")
+		elekLog.WithField("host", offer.GetHostname()).Log(CONSOLE, log.InfoLevel, "TASKS STARTING...")
 	} else {
-		elekLog.WithFields(log.Fields{"task": fmt.Sprintf("%s", ts.Name), "Instance": fmt.Sprintf("%d", *ts.Instances),
+		elekLog.WithFields(log.Fields{
-			"host": fmt.Sprintf("%s", offer.GetHostname())}).Log(CONSOLE, log.InfoLevel, "TASK STARTING... ")
+			"task":     ts.Name,
+			"Instance": fmt.Sprintf("%d", *ts.Instances),
+			"host":     offer.GetHostname(),
+		}).Log(CONSOLE, log.InfoLevel, "TASK STARTING... ")
 	}
 }
 
 func (s *BaseScheduler) LogTaskWattsConsideration(ts def.Task, host string, wattsToConsider float64) {
-	elekLog.WithFields(log.Fields{"task": ts.Name, "host": host, "Watts": fmt.Sprintf("%f", wattsToConsider)}).Log(CONSOLE, log.InfoLevel, "Watts considered for ")
+	elekLog.WithFields(log.Fields{
+		"task":  ts.Name,
+		"host":  host,
+		"Watts": fmt.Sprintf("%f", wattsToConsider),
+	}).Log(CONSOLE, log.InfoLevel, "Watts considered for ")
 }
 
 func (s *BaseScheduler) LogOffersReceived(offers []*mesos.Offer) {
-	elekLog.WithFields(log.Fields{"Resource offers received": fmt.Sprintf("%d", len(offers))}).Log(CONSOLE,
+	elekLog.WithField("numOffers", fmt.Sprintf("%d", len(offers))).Log(CONSOLE, log.InfoLevel, "Resource offers received")
-		log.InfoLevel, "")
 }
 
 func (s *BaseScheduler) LogNoPendingTasksDeclineOffers(offer *mesos.Offer) {
-	elekLog.WithFields(log.Fields{"DECLINING OFFER for host": fmt.Sprintf("%s", offer.GetHostname())}).Log(CONSOLE,
+	elekLog.Logf(CONSOLE, log.WarnLevel, "DECLINING OFFER for host %s. No tasks left to schedule", offer.GetHostname())
-		log.WarnLevel, "No tasks left to schedule ")
 }
 
 func (s *BaseScheduler) LogNumberOfRunningTasks() {
-	elekLog.WithFields(log.Fields{"Number of tasks still Running": fmt.Sprintf("%d", s.tasksRunning)}).Log(CONSOLE,
+	elekLog.Logf(CONSOLE, log.InfoLevel, "Number of tasks still running %d", s.tasksRunning)
-		log.InfoLevel, "")
 }
 
 func (s *BaseScheduler) LogCoLocatedTasks(slaveID string) {
@@ -283,12 +287,11 @@ func (s *BaseScheduler) LogCoLocatedTasks(slaveID string) {
 		buffer.WriteString(fmt.Sprintln(taskName))
 	}
 	s.TasksRunningMutex.Unlock()
-	elekLog.WithFields(log.Fields{"Colocated with": fmt.Sprintf("%s", buffer.String())}).Log(CONSOLE,
+	elekLog.WithField("Tasks", buffer.String()).Log(CONSOLE, log.InfoLevel, "Colocated with")
-		log.InfoLevel, "")
 }
 
 func (s *BaseScheduler) LogSchedTrace(taskToSchedule *mesos.TaskInfo, offer *mesos.Offer) {
-	elekLog.WithFields(log.Fields{offer.GetHostname(): fmt.Sprintf("%s", taskToSchedule.GetTaskId().GetValue())}).Log(SCHED_TRACE, log.InfoLevel, "")
+	elekLog.WithField(offer.GetHostname(), taskToSchedule.GetTaskId().GetValue()).Log(SCHED_TRACE, log.InfoLevel, "")
 }
 
 func (s *BaseScheduler) LogTerminateScheduler() {
@@ -299,47 +302,48 @@ func (s *BaseScheduler) LogInsufficientResourcesDeclineOffer(offer *mesos.Offer,
 	offerResources ...interface{}) {
 	buffer := bytes.Buffer{}
 	buffer.WriteString(fmt.Sprintf("<CPU: %f, RAM: %f, Watts: %f>", offerResources...))
-	elekLog.WithFields(log.Fields{"Offer Resources": fmt.Sprintf("%s", buffer.String())}).Log(CONSOLE,
+	elekLog.WithField("Offer Resources", buffer.String()).Log(CONSOLE,
 		log.WarnLevel, "DECLINING OFFER... Offer has insufficient resources to launch a task")
 }
 
 func (s *BaseScheduler) LogOfferRescinded(offerID *mesos.OfferID) {
-	elekLog.WithFields(log.Fields{"OfferID": fmt.Sprintf("%s", offerID)}).Log(CONSOLE,
+	elekLog.WithField("OfferID", *offerID.Value).Log(CONSOLE, log.ErrorLevel, "OFFER RESCINDED")
-		log.ErrorLevel, "OFFER RESCINDED")
 }
 
 func (s *BaseScheduler) LogSlaveLost(slaveID *mesos.SlaveID) {
-	elekLog.WithFields(log.Fields{"SlaveID": fmt.Sprintf("%s", slaveID)}).Log(CONSOLE,
+	elekLog.WithField("SlaveID", *slaveID.Value).Log(CONSOLE, log.ErrorLevel, "SLAVE LOST")
-		log.ErrorLevel, "SLAVE LOST")
 }
 
 func (s *BaseScheduler) LogExecutorLost(executorID *mesos.ExecutorID, slaveID *mesos.SlaveID) {
-	elekLog.WithFields(log.Fields{"ExecutorID": fmt.Sprintf("%s", executorID), "SlaveID": fmt.Sprintf("%s", slaveID)}).Log(CONSOLE, log.ErrorLevel, "EXECUTOR LOST")
+	elekLog.WithFields(log.Fields{
+		"ExecutorID": executorID,
+		"SlaveID":    slaveID,
+	}).Log(CONSOLE, log.ErrorLevel, "EXECUTOR LOST")
 }
 
 func (s *BaseScheduler) LogFrameworkMessage(executorID *mesos.ExecutorID,
 	slaveID *mesos.SlaveID, message string) {
-	elekLog.WithFields(log.Fields{"Received Framework message from executor": executorID}).Log(CONSOLE,
+	elekLog.Logf(CONSOLE, log.InfoLevel, "Received Framework message from executor %v", executorID)
-		log.InfoLevel, message)
 }
 
 func (s *BaseScheduler) LogMesosError(err string) {
-	elekLog.WithFields(log.Fields{"MESOS CONSOLE": fmt.Sprintf("%v", err)}).Log(CONSOLE,
+	elekLog.Logf(CONSOLE, log.ErrorLevel, "MESOS CONSOLE %v", err)
-		log.ErrorLevel, "")
 }
 
 func (s *BaseScheduler) LogElectronError(err error) {
-	elekLog.WithFields(log.Fields{"ELECTRON CONSOLE": fmt.Sprintf("%v", err)}).Log(CONSOLE, log.ErrorLevel, "")
+	elekLog.Logf(CONSOLE, log.ErrorLevel, "ELEKTRON CONSOLE %v", err)
 }
 
 func (s *BaseScheduler) LogFrameworkRegistered(frameworkID *mesos.FrameworkID,
 	masterInfo *mesos.MasterInfo) {
-	elekLog.WithFields(log.Fields{"frameworkID": fmt.Sprintf("%s", frameworkID), "master": fmt.Sprintf("%v", masterInfo)}).Log(CONSOLE, log.InfoLevel, "FRAMEWORK REGISTERED!")
+	elekLog.WithFields(log.Fields{
+		"frameworkID": frameworkID,
+		"master":      fmt.Sprintf("%v", masterInfo),
+	}).Log(CONSOLE, log.InfoLevel, "FRAMEWORK REGISTERED!")
 }
 
 func (s *BaseScheduler) LogFrameworkReregistered(masterInfo *mesos.MasterInfo) {
-	elekLog.WithFields(log.Fields{"master": fmt.Sprintf("%v", masterInfo)}).Log(CONSOLE,
+	elekLog.WithField("master", fmt.Sprintf("%v", masterInfo)).Log(CONSOLE, log.InfoLevel, "Framework re-registered")
-		log.InfoLevel, "Framework re-registered")
 }
 
 func (s *BaseScheduler) LogDisconnected() {
@@ -355,12 +359,15 @@ func (s *BaseScheduler) LogTaskStatusUpdate(status *mesos.TaskStatus) {
 	default:
 		level = log.InfoLevel
 	}
-	elekLog.WithFields(log.Fields{"task": fmt.Sprintf("%s", *status.TaskId.Value), "state": NameFor(status.State)}).Log(CONSOLE, level, "Task Status received")
+	elekLog.WithFields(log.Fields{
+		"task":  *status.TaskId.Value,
+		"state": NameFor(status.State),
+	}).Log(CONSOLE, level, "Task Status received")
 }
 
 func (s *BaseScheduler) LogSchedPolicySwitch(name string, nextPolicy SchedPolicyState) {
 	logSPS := func() {
-		elekLog.WithFields(log.Fields{"Name": name}).Log(SPS, log.InfoLevel, "")
+		elekLog.WithField("Name", name).Log(SPS, log.InfoLevel, "")
 	}
 	if s.hasReceivedResourceOffers && (s.curSchedPolicy != nextPolicy) {
 		logSPS()
@@ -369,10 +376,13 @@ func (s *BaseScheduler) LogSchedPolicySwitch(name string, nextPolicy SchedPolicy
 	}
 	// Logging the size of the scheduling window and the scheduling policy
 	// 	that is going to schedule the tasks in the scheduling window.
-	elekLog.WithFields(log.Fields{"Window size": fmt.Sprintf("%d", s.schedWindowSize), "Name": name}).Log(SCHED_WINDOW, log.InfoLevel, "")
+	elekLog.WithFields(log.Fields{
+		"Window size": fmt.Sprintf("%d", s.schedWindowSize),
+		"Name":        name,
+	}).Log(SCHED_WINDOW, log.InfoLevel, "")
 }
 
 func (s *BaseScheduler) LogClsfnAndTaskDistOverhead(overhead time.Duration) {
 	// Logging the overhead in microseconds.
-	elekLog.WithFields(log.Fields{"Overhead in microseconds": fmt.Sprintf("%f", float64(overhead.Nanoseconds())/1000.0)}).Log(CLSFN_TASKDISTR_OVERHEAD, log.InfoLevel, "")
+	elekLog.WithField("Overhead in microseconds", fmt.Sprintf("%f", float64(overhead.Nanoseconds())/1000.0)).Log(CLSFN_TASKDISTR_OVERHEAD, log.InfoLevel, "")
 }

schedulers/helpers.go

@@ -36,7 +36,7 @@ import (
 func coLocated(tasks map[string]bool, s BaseScheduler) {
 
 	for _, task := range tasks {
-		elekLog.WithFields(log.Fields{"Task": task}).Log(CONSOLE, log.InfoLevel, "")
+		elekLog.WithField("Task", fmt.Sprintf("%v", task)).Log(CONSOLE, log.InfoLevel, "")
 	}
 
 	elekLog.Log(CONSOLE, log.InfoLevel, "---------------------")

schedulers/schedPolicy.go

@@ -90,8 +90,7 @@ func switchTaskDistBased(baseSchedRef *BaseScheduler) string {
 	// Determine the distribution of tasks in the new scheduling window.
 	taskDist, err := def.GetTaskDistributionInWindow(baseSchedRef.schedWindowSize, baseSchedRef.tasks)
 	baseSchedRef.LogClsfnAndTaskDistOverhead(time.Now().Sub(startTime))
-	elekLog.WithFields(log.Fields{"Task Distribution": fmt.Sprintf("%f", taskDist)}).Log(CONSOLE,
+	elekLog.WithField("Task Distribution", fmt.Sprintf("%f", taskDist)).Log(CONSOLE, log.InfoLevel, "Switching... ")
-		log.InfoLevel, "Switching... ")
 	if err != nil {
 		// All the tasks in the window were only classified into 1 cluster.
 		// Max-Min and Max-GreedyMins would work the same way as Bin-Packing for this situation.
@@ -219,9 +218,11 @@ func (bsps *baseSchedPolicyState) SwitchIfNecessary(spc SchedPolicyContext) {
 					switchToPolicyName = switchBasedOn[baseSchedRef.schedPolSwitchCriteria](baseSchedRef)
 				} else {
 					// We continue working with the currently deployed scheduling policy.
-					log.Println("Continuing with the current scheduling policy...")
+					elekLog.Log(CONSOLE, log.InfoLevel, "Continuing with the current scheduling policy...")
-					log.Printf("TasksScheduled[%d], SchedWindowSize[%d]", bsps.numTasksScheduled,
+					elekLog.WithFields(log.Fields{
-						baseSchedRef.schedWindowSize)
+						"TasksScheduled":  fmt.Sprintf("%d", bsps.numTasksScheduled),
+						"SchedWindowSize": fmt.Sprintf("%d", baseSchedRef.schedWindowSize),
+					}).Log(CONSOLE, log.InfoLevel, "")
 					return
 				}
 			}
@@ -233,9 +234,11 @@ func (bsps *baseSchedPolicyState) SwitchIfNecessary(spc SchedPolicyContext) {
 			bsps.numTasksScheduled = 0
 		} else {
 			// We continue working with the currently deployed scheduling policy.
-			log.Println("Continuing with the current scheduling policy...")
+			elekLog.Log(CONSOLE, log.InfoLevel, "Continuing with the current scheduling policy...")
-			log.Printf("TasksScheduled[%d], SchedWindowSize[%d]", bsps.numTasksScheduled,
+			elekLog.WithFields(log.Fields{
-				baseSchedRef.schedWindowSize)
+				"TasksScheduled":  fmt.Sprintf("%d", bsps.numTasksScheduled),
+				"SchedWindowSize": fmt.Sprintf("%d", baseSchedRef.schedWindowSize),
+			}).Log(CONSOLE, log.InfoLevel, "")
 			return
 		}
 	}

utilities/offerUtils/offerUtils.go

@@ -90,13 +90,15 @@ func UpdateEnvironment(offer *mesos.Offer) {
 	var host = offer.GetHostname()
 	// If this host is not present in the set of hosts.
 	if _, ok := constants.Hosts[host]; !ok {
-		elekLog.WithFields(log.Fields{"Adding host": host}).Log(CONSOLE, log.InfoLevel, "New host detected")
+		elekLog.WithField("host", host).Log(CONSOLE, log.InfoLevel, "New host detected")
 		// Add this host.
 		constants.Hosts[host] = struct{}{}
 		// Get the power class of this host.
 		class := PowerClass(offer)
-		elekLog.WithFields(log.Fields{"host": host, "PowerClass": class}).Log(CONSOLE,
+		elekLog.WithFields(log.Fields{
-			log.InfoLevel, "Registering the power class...")
+			"host":       host,
+			"PowerClass": class,
+		}).Log(CONSOLE, log.InfoLevel, "Registering the power class...")
 		// If new power class, register the power class.
 		if _, ok := constants.PowerClasses[class]; !ok {
 			constants.PowerClasses[class] = make(map[string]struct{})