Refactor: remove CPU part into own file

cpu.go

@@ -0,0 +1,58 @@
+package gupta
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// collect all CPU stat from /proc/cpustat
+type CPUStat struct {
+	totalTime    float64
+	idleTime     float64
+	totalTimeNew float64
+	idleTimeNew  float64
+}
+
+func (c *CPUStat) ReadInfoNew(statline string) {
+	rawInfo := strings.Fields(statline)
+	idleNew, _ := strconv.ParseFloat(rawInfo[4], 10)
+	iowaitNew, _ := strconv.ParseFloat(rawInfo[5], 10)
+	c.idleTimeNew = idleNew + iowaitNew
+	for _, s := range rawInfo {
+		u, _ := strconv.ParseFloat(s, 10)
+		c.totalTimeNew += u
+	}
+}
+
+func (c *CPUStat) ReadInfo(statline string) {
+	rawInfo := strings.Fields(statline)
+	for _, s := range rawInfo[1:] {
+		u, _ := strconv.ParseFloat(s, 10)
+		c.totalTime += u
+	}
+	idle, _ := strconv.ParseFloat(rawInfo[4], 10)
+	iowait, _ := strconv.ParseFloat(rawInfo[5], 10)
+	c.idleTime = idle + iowait
+}
+
+func (c *CPUStat) CPUUsage() float64 {
+	deltaIdleTime := c.idleTimeNew - c.idleTime
+	deltaTotalTime := c.totalTimeNew - c.totalTime
+	cpuUsage := (1.0 - float64(deltaIdleTime)/float64(deltaTotalTime)) * 100
+	return cpuUsage
+}
+
+func NewCPUStat(procstatline, procstatlineNew string) CPUStat {
+	cpustat := CPUStat{}
+
+	cpustat.ReadInfo(procstatline)
+	cpustat.ReadInfoNew(procstatlineNew)
+	return cpustat
+}
+
+func (c CPUStat) MarshalJSON() ([]byte, error) {
+	jsonData := []byte(
+		fmt.Sprintf("{\"cpu usage\": \"%.2f%%\"}", c.CPUUsage()))
+	return jsonData, nil
+}

gupta.go

@@ -3,8 +3,6 @@ package gupta
 import (
 	"encoding/json"
 	"fmt"
-	"strconv"
-	"strings"
 	"time"
 )
 
@@ -42,54 +40,3 @@ func (g *GuptaReport) MarshalJSON() ([]byte, error) {
 	report = append(report, []byte("]}")...)
 	return report, nil
 }
-
-// collect all CPU stat from /proc/cpustat
-type CPUStat struct {
-	totalTime    float64
-	idleTime     float64
-	totalTimeNew float64
-	idleTimeNew  float64
-}
-
-func (c *CPUStat) ReadInfoNew(statline string) {
-	rawInfo := strings.Fields(statline)
-	idleNew, _ := strconv.ParseFloat(rawInfo[4], 10)
-	iowaitNew, _ := strconv.ParseFloat(rawInfo[5], 10)
-	c.idleTimeNew = idleNew + iowaitNew
-	for _, s := range rawInfo {
-		u, _ := strconv.ParseFloat(s, 10)
-		c.totalTimeNew += u
-	}
-}
-
-func (c *CPUStat) ReadInfo(statline string) {
-	rawInfo := strings.Fields(statline)
-	for _, s := range rawInfo[1:] {
-		u, _ := strconv.ParseFloat(s, 10)
-		c.totalTime += u
-	}
-	idle, _ := strconv.ParseFloat(rawInfo[4], 10)
-	iowait, _ := strconv.ParseFloat(rawInfo[5], 10)
-	c.idleTime = idle + iowait
-}
-
-func (c *CPUStat) CPUUsage() float64 {
-	deltaIdleTime := c.idleTimeNew - c.idleTime
-	deltaTotalTime := c.totalTimeNew - c.totalTime
-	cpuUsage := (1.0 - float64(deltaIdleTime)/float64(deltaTotalTime)) * 100
-	return cpuUsage
-}
-
-func NewCPUStat(procstatline, procstatlineNew string) CPUStat {
-	cpustat := CPUStat{}
-
-	cpustat.ReadInfo(procstatline)
-	cpustat.ReadInfoNew(procstatlineNew)
-	return cpustat
-}
-
-func (c CPUStat) MarshalJSON() ([]byte, error) {
-	jsonData := []byte(
-		fmt.Sprintf("{\"cpu usage\": \"%.2f%%\"}", c.CPUUsage()))
-	return jsonData, nil
-}