renaming plugins -> inputs

plugins/inputs/system/memory.go

@@ -0,0 +1,77 @@
+package system
+
+import (
+	"fmt"
+
+	"github.com/influxdb/telegraf/plugins/inputs"
+)
+
+type MemStats struct {
+	ps PS
+}
+
+func (_ *MemStats) Description() string {
+	return "Read metrics about memory usage"
+}
+
+func (_ *MemStats) SampleConfig() string { return "" }
+
+func (s *MemStats) Gather(acc inputs.Accumulator) error {
+	vm, err := s.ps.VMStat()
+	if err != nil {
+		return fmt.Errorf("error getting virtual memory info: %s", err)
+	}
+
+	fields := map[string]interface{}{
+		"total":             vm.Total,
+		"available":         vm.Available,
+		"used":              vm.Used,
+		"free":              vm.Free,
+		"cached":            vm.Cached,
+		"buffered":          vm.Buffers,
+		"used_percent":      100 * float64(vm.Used) / float64(vm.Total),
+		"available_percent": 100 * float64(vm.Available) / float64(vm.Total),
+	}
+	acc.AddFields("mem", fields, nil)
+
+	return nil
+}
+
+type SwapStats struct {
+	ps PS
+}
+
+func (_ *SwapStats) Description() string {
+	return "Read metrics about swap memory usage"
+}
+
+func (_ *SwapStats) SampleConfig() string { return "" }
+
+func (s *SwapStats) Gather(acc inputs.Accumulator) error {
+	swap, err := s.ps.SwapStat()
+	if err != nil {
+		return fmt.Errorf("error getting swap memory info: %s", err)
+	}
+
+	fields := map[string]interface{}{
+		"total":        swap.Total,
+		"used":         swap.Used,
+		"free":         swap.Free,
+		"used_percent": swap.UsedPercent,
+		"in":           swap.Sin,
+		"out":          swap.Sout,
+	}
+	acc.AddFields("swap", fields, nil)
+
+	return nil
+}
+
+func init() {
+	inputs.Add("mem", func() inputs.Input {
+		return &MemStats{ps: &systemPS{}}
+	})
+
+	inputs.Add("swap", func() inputs.Input {
+		return &SwapStats{ps: &systemPS{}}
+	})
+}