Use strconv.Itoa() instead of fmt.Sprintf() (#1566)

Signed-off-by: Julian Kornberger <jk+github@digineo.de>

4 files changed, 9 insertions, 9 deletions

diff --git a/collector/cpu_dragonfly.go b/collector/cpu_dragonfly.go
index beef390..4ccb729 100644
--- a/collector/cpu_dragonfly.go
+++ b/collector/cpu_dragonfly.go
@@ -17,7 +17,7 @@ package collector
 
 import (
         "errors"
-        "fmt"
+        "strconv"
         "unsafe"
 
         "github.com/go-kit/kit/log"
@@ -131,7 +131,7 @@ func (c *statCollector) Update(ch chan<- prometheus.Metric) error {
         // Export order: user nice sys intr idle
         cpuFields := []string{"user", "nice", "sys", "interrupt", "idle"}
         for i, value := range cpuTimes {
-                cpux := fmt.Sprintf("%d", i/fieldsCount)
+                cpux := strconv.Itoa(i / fieldsCount)
                 ch <- prometheus.MustNewConstMetric(c.cpu, prometheus.CounterValue, value, cpux, cpuFields[i%fieldsCount])
         }
 
diff --git a/collector/cpu_linux.go b/collector/cpu_linux.go
index 1cb6f2c..f5e9ce8 100644
--- a/collector/cpu_linux.go
+++ b/collector/cpu_linux.go
@@ -106,7 +106,7 @@ func (c *cpuCollector) updateInfo(ch chan<- prometheus.Metric) error {
                         1,
                         cpu.PhysicalID,
                         cpu.CoreID,
-                        fmt.Sprintf("%d", cpu.Processor),
+                        strconv.Itoa(int(cpu.Processor)),
                         cpu.VendorID,
                         cpu.CPUFamily,
                         cpu.Model,
@@ -202,7 +202,7 @@ func (c *cpuCollector) updateStat(ch chan<- prometheus.Metric) error {
         }
 
         for cpuID, cpuStat := range stats.CPU {
-                cpuNum := fmt.Sprintf("%d", cpuID)
+                cpuNum := strconv.Itoa(cpuID)
                 ch <- prometheus.MustNewConstMetric(c.cpu, prometheus.CounterValue, cpuStat.User, cpuNum, "user")
                 ch <- prometheus.MustNewConstMetric(c.cpu, prometheus.CounterValue, cpuStat.Nice, cpuNum, "nice")
                 ch <- prometheus.MustNewConstMetric(c.cpu, prometheus.CounterValue, cpuStat.System, cpuNum, "system")
diff --git a/collector/interrupts_openbsd.go b/collector/interrupts_openbsd.go
index 5a61e68..c9aae3c 100644
--- a/collector/interrupts_openbsd.go
+++ b/collector/interrupts_openbsd.go
@@ -108,7 +108,7 @@ func (c *interruptsCollector) Update(ch chan<- prometheus.Metric) error {
                         ch <- c.desc.mustNewConstMetric(
                                 value,
                                 strconv.Itoa(cpuNo),
-                                fmt.Sprintf("%d", interrupt.vector),
+                                strconv.Itoa(interrupt.vector),
                                 dev,
                         )
                 }
diff --git a/collector/perf_linux.go b/collector/perf_linux.go
index 0e8a3cc..e8a52b4 100644
--- a/collector/perf_linux.go
+++ b/collector/perf_linux.go
@@ -14,8 +14,8 @@
 package collector
 
 import (
-        "fmt"
         "runtime"
+        "strconv"
 
         "github.com/go-kit/kit/log"
         "github.com/hodgesds/perf-utils"
@@ -334,7 +334,7 @@ func (c *perfCollector) Update(ch chan<- prometheus.Metric) error {
 
 func (c *perfCollector) updateHardwareStats(ch chan<- prometheus.Metric) error {
         for cpu, profiler := range c.perfHwProfilers {
-                cpuStr := fmt.Sprintf("%d", cpu)
+                cpuStr := strconv.Itoa(cpu)
                 hwProfile, err := profiler.Profile()
                 if err != nil {
                         return err
@@ -405,7 +405,7 @@ func (c *perfCollector) updateHardwareStats(ch chan<- prometheus.Metric) error {
 
 func (c *perfCollector) updateSoftwareStats(ch chan<- prometheus.Metric) error {
         for cpu, profiler := range c.perfSwProfilers {
-                cpuStr := fmt.Sprintf("%d", cpu)
+                cpuStr := strconv.Itoa(cpu)
                 swProfile, err := profiler.Profile()
                 if err != nil {
                         return err
@@ -460,7 +460,7 @@ func (c *perfCollector) updateSoftwareStats(ch chan<- prometheus.Metric) error {
 
 func (c *perfCollector) updateCacheStats(ch chan<- prometheus.Metric) error {
         for cpu, profiler := range c.perfCacheProfilers {
-                cpuStr := fmt.Sprintf("%d", cpu)
+                cpuStr := strconv.Itoa(cpu)
                 cacheProfile, err := profiler.Profile()
                 if err != nil {
                         return err