memavg collector in Go

collectors/memavg/read_memavg.go

@@ -0,0 +1,48 @@
+package main
+import (
+    "strings"
+    "io/ioutil"
+    "fmt"
+    "time"
+    "os"
+    "strconv"
+    )
+
+func main() {
+    t := time.Now()
+    hostname, err := os.Hostname()
+    if err != nil {
+        fmt.Println("#", err)
+        os.Exit(1)
+    }
+    hostname = strings.Split(hostname, ".")[0]
+    data, err := ioutil.ReadFile("/proc/meminfo")
+    if err != nil {
+        fmt.Println("#", err)
+        os.Exit(1)
+        return
+    }
+    lines := strings.Split(string(data), "\n")
+    for _, l := range lines {
+        if strings.HasPrefix(l, "MemTotal") {
+            f := strings.Fields(l)
+            v, err := strconv.ParseInt(f[1], 10, 0)
+            if err == nil {
+                fmt.Printf("mem_total,hostname=%s value=%v %v\n", hostname, v*1024, t.UnixNano())
+            }
+        } else if strings.HasPrefix(l, "MemAvailable") {
+            f := strings.Fields(l)
+            v, err := strconv.ParseInt(f[1], 10, 0)
+            if err == nil {
+                fmt.Printf("mem_avail,hostname=%s value=%v %v\n", hostname, v*1024, t.UnixNano())
+            }
+        } else if strings.HasPrefix(l, "MemFree") {
+            f := strings.Fields(l)
+            v, err := strconv.ParseInt(f[1], 10, 0)
+            if err == nil {
+                fmt.Printf("mem_free,hostname=%s value=%v %v\n", hostname, v*1024, t.UnixNano())
+            }
+        }
+    }
+    return
+}