add mac osx support

.idea/workspace.xml

@@ -2,7 +2,9 @@
 <project version="4">
   <component name="ChangeListManager">
     <list default="true" id="fc2840de-29dc-4fca-8e0e-a283562f60ca" name="Default Changelist" comment="">
+      <change afterPath="$PROJECT_DIR$/reporter_darwin.go" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/go.mod" beforeDir="false" afterPath="$PROJECT_DIR$/go.mod" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -37,7 +39,7 @@
     <property name="go.import.settings.migrated" value="true" />
     <property name="go.sdk.automatically.set" value="true" />
     <property name="go.tried.to.enable.integration.vgo.integrator" value="true" />
-    <property name="last_opened_file_path" value="$PROJECT_DIR$/../ran_onf/onos-ric-master/cmd/apps/onos-ric-mlb/onos-ran-mlb.go" />
+    <property name="last_opened_file_path" value="$PROJECT_DIR$" />
     <property name="nodejs_interpreter_path.stuck_in_default_project" value="undefined stuck path" />
     <property name="nodejs_npm_path_reset_for_default_project" value="true" />
   </component>

reporter_darwin.go

@@ -0,0 +1,96 @@
+package iperf
+
+import (
+	"fmt"
+	"github.com/BGrewell/go-conversions"
+	"github.com/BGrewell/tail"
+	"log"
+	"strconv"
+	"strings"
+	"time"
+)
+
+//TODO: This has not been tested on OS X ... my assumption is it is the exact same as linux but if it's not then the
+//      reporting will be broken
+
+func (r *Reporter) runLogProcessor() {
+	var err error
+	r.tailer, err = tail.TailFile(r.LogFile, tail.Config{
+		Follow:    true,
+		ReOpen:    true,
+		Poll:      false, // on linux we don't need to poll as the fsnotify works properly
+		MustExist: true,
+	})
+	if err != nil {
+		log.Fatalf("failed to tail log file: %v", err)
+	}
+
+	for {
+		select {
+		case line := <-r.tailer.Lines:
+			if line == nil {
+				continue
+			}
+			if len(line.Text) > 5 {
+				id := line.Text[1:4]
+				stream, err := strconv.Atoi(strings.TrimSpace(id))
+				if err != nil {
+					continue
+				}
+				fields := strings.Fields(line.Text[5:])
+				if len(fields) >= 9 {
+					if fields[0] == "local" {
+						continue
+					}
+					timeFields := strings.Split(fields[0], "-")
+					start, err := strconv.ParseFloat(timeFields[0], 32)
+					if err != nil {
+						log.Printf("failed to convert start time: %s\n", err)
+					}
+					end, err := strconv.ParseFloat(timeFields[1], 32)
+					transferedStr := fmt.Sprintf("%s%s", fields[2], fields[3])
+					transferedBytes, err := conversions.StringBitRateToInt(transferedStr)
+					if err != nil {
+						log.Printf("failed to convert units: %s\n", err)
+					}
+					transferedBytes = transferedBytes / 8
+					rateStr := fmt.Sprintf("%s%s", fields[4], fields[5])
+					rate, err := conversions.StringBitRateToInt(rateStr)
+					if err != nil {
+						log.Printf("failed to convert units: %s\n", err)
+					}
+					retrans, err := strconv.Atoi(fields[6])
+					if err != nil {
+						log.Printf("failed to convert units: %s\n", err)
+					}
+					cwndStr := fmt.Sprintf("%s%s", fields[7], fields[8])
+					cwnd, err := conversions.StringBitRateToInt(cwndStr)
+					if err != nil {
+						log.Printf("failed to convert units: %s\n", err)
+					}
+					cwnd = cwnd / 8
+					omitted := false
+					if len(fields) >= 10 && fields[9] == "(omitted)" {
+						omitted = true
+					}
+					report := &StreamIntervalReport{
+						Socket:           stream,
+						StartInterval:    float32(start),
+						EndInterval:      float32(end),
+						Seconds:          float32(end - start),
+						Bytes:            int(transferedBytes),
+						BitsPerSecond:    float64(rate),
+						Retransmissions:  retrans,
+						CongestionWindow: int(cwnd),
+						Omitted:          omitted,
+					}
+					r.ReportingChannel <- report
+				}
+			}
+		case <-time.After(100 * time.Millisecond):
+			if !r.running {
+				return
+			}
+		}
+	}
+}