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Change the implementation of Get boot time #304

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Merged
merged 1 commit into from
Feb 27, 2019
Merged

Change the implementation of Get boot time #304

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60 changes: 15 additions & 45 deletions platform/os_windows.go
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,6 @@ import (
"bytes"
"fmt"
"os/exec"
"strconv"
"strings"
"time"

Expand Down Expand Up @@ -44,57 +43,28 @@ func GetOSInfo() string {

// GetLastRebootTime returns the last time the system rebooted.
func GetLastRebootTime() (time.Time, error) {
var systemBootTime string
out, err := exec.Command("cmd", "/c", "systeminfo").Output()
out, err := exec.Command("cmd", "/c", "wmic os get lastbootuptime").Output()
if err != nil {
log.Printf("Failed to query systeminfo, err: %v", err)
log.Printf("Failed to query wmic os get lastbootuptime, err: %v", err)
return time.Time{}.UTC(), err
}

systemInfo := strings.Split(string(out), "\n")
for _, systemProperty := range systemInfo {
if strings.Contains(systemProperty, "Boot Time") {
systemBootTime = strings.TrimSpace(strings.Split(systemProperty, "System Boot Time:")[1])
}
lastBootupTime := strings.Split(strings.TrimSpace(string(out)), "\n")
if strings.TrimSpace(lastBootupTime[0]) != "LastBootUpTime" || len(lastBootupTime) != 2 {
log.Printf("Failed to retrieve boot time")
return time.Time{}.UTC(), fmt.Errorf("Failed to retrieve boot time with 'wmic os get lastbootuptime'")
}
systemBootupTime := strings.Split(lastBootupTime[1], ".")[0]

if len(strings.TrimSpace(systemBootTime)) == 0 {
log.Printf("Failed to retrieve boot time from systeminfo")
return time.Time{}.UTC(), fmt.Errorf("Failed to retrieve boot time from systeminfo")
}

log.Printf("Boot time: %s", systemBootTime)
// The System Boot Time is in the following format "01/02/2006, 03:04:05 PM"
// Formulate the Boot Time in the format: "2006-01-02 15:04:05"
bootDate := strings.Split(systemBootTime, " ")[0]
bootTime := strings.Split(systemBootTime, " ")[1]
bootPM := strings.Contains(strings.Split(systemBootTime, " ")[2], "PM")

month := strings.Split(bootDate, "/")[0]
if len(month) < 2 {
month = "0" + month
}

day := strings.Split(bootDate, "/")[1]
if len(day) < 2 {
day = "0" + day
}

year := strings.Split(bootDate, "/")[2]
year = strings.Trim(year, ",")
hour := strings.Split(bootTime, ":")[0]
hourInt, _ := strconv.Atoi(hour)
min := strings.Split(bootTime, ":")[1]
sec := strings.Split(bootTime, ":")[2]

if bootPM && hourInt < 12 {
hourInt += 12
} else if !bootPM && hourInt == 12 {
hourInt = 0
}
// The systembootuptime is in the format YYYYMMDDHHMMSS
bootYear := systemBootupTime[0:4]
bootMonth := systemBootupTime[4:6]
bootDay := systemBootupTime[6:8]
bootHour := systemBootupTime[8:10]
bootMin := systemBootupTime[10:12]
bootSec := systemBootupTime[12:14]
systemBootTime := bootYear + "-" + bootMonth + "-" + bootDay + " " + bootHour + ":" + bootMin + ":" + bootSec

hour = strconv.Itoa(hourInt)
systemBootTime = year + "-" + month + "-" + day + " " + hour + ":" + min + ":" + sec
log.Printf("Formatted Boot time: %s", systemBootTime)

// Parse the boot time.
Expand Down