package passenger import ( "bytes" "encoding/xml" "fmt" "os/exec" "strconv" "strings" "github.com/influxdata/telegraf" "github.com/influxdata/telegraf/plugins/inputs" "golang.org/x/net/html/charset" ) type passenger struct { Command string } func (p *passenger) parseCommand() (string, []string) { var arguments []string if !strings.Contains(p.Command, " ") { return p.Command, arguments } arguments = strings.Split(p.Command, " ") if len(arguments) == 1 { return arguments[0], arguments[1:] } return arguments[0], arguments[1:] } type info struct { Passenger_version string `xml:"passenger_version"` Process_count int `xml:"process_count"` Capacity_used int `xml:"capacity_used"` Get_wait_list_size int `xml:"get_wait_list_size"` Max int `xml:"max"` Supergroups struct { Supergroup []struct { Name string `xml:"name"` Get_wait_list_size int `xml:"get_wait_list_size"` Capacity_used int `xml:"capacity_used"` Group []struct { Name string `xml:"name"` AppRoot string `xml:"app_root"` AppType string `xml:"app_type"` Enabled_process_count int `xml:"enabled_process_count"` Disabling_process_count int `xml:"disabling_process_count"` Disabled_process_count int `xml:"disabled_process_count"` Capacity_used int `xml:"capacity_used"` Get_wait_list_size int `xml:"get_wait_list_size"` Processes_being_spawned int `xml:"processes_being_spawned"` Processes struct { Process []*process `xml:"process"` } `xml:"processes"` } `xml:"group"` } `xml:"supergroup"` } `xml:"supergroups"` } type process struct { Pid int `xml:"pid"` Concurrency int `xml:"concurrency"` Sessions int `xml:"sessions"` Busyness int `xml:"busyness"` Processed int `xml:"processed"` Spawner_creation_time int64 `xml:"spawner_creation_time"` Spawn_start_time int64 `xml:"spawn_start_time"` Spawn_end_time int64 `xml:"spawn_end_time"` Last_used int64 `xml:"last_used"` Uptime string `xml:"uptime"` Code_revision string `xml:"code_revision"` Life_status string `xml:"life_status"` Enabled string `xml:"enabled"` Has_metrics bool `xml:"has_metrics"` Cpu int64 `xml:"cpu"` Rss int64 `xml:"rss"` Pss int64 `xml:"pss"` Private_dirty int64 `xml:"private_dirty"` Swap int64 `xml:"swap"` Real_memory int64 `xml:"real_memory"` Vmsize int64 `xml:"vmsize"` Process_group_id string `xml:"process_group_id"` } func (p *process) getUptime() int64 { if p.Uptime == "" { return 0 } timeSlice := strings.Split(p.Uptime, " ") var uptime int64 uptime = 0 for _, v := range timeSlice { switch { case strings.HasSuffix(v, "d"): iValue := strings.TrimSuffix(v, "d") value, err := strconv.ParseInt(iValue, 10, 64) if err == nil { uptime += value * (24 * 60 * 60) } case strings.HasSuffix(v, "h"): iValue := strings.TrimSuffix(v, "y") value, err := strconv.ParseInt(iValue, 10, 64) if err == nil { uptime += value * (60 * 60) } case strings.HasSuffix(v, "m"): iValue := strings.TrimSuffix(v, "m") value, err := strconv.ParseInt(iValue, 10, 64) if err == nil { uptime += value * 60 } case strings.HasSuffix(v, "s"): iValue := strings.TrimSuffix(v, "s") value, err := strconv.ParseInt(iValue, 10, 64) if err == nil { uptime += value } } } return uptime } var sampleConfig = ` ## Path of passenger-status. ## ## Plugin gather metric via parsing XML output of passenger-status ## More information about the tool: ## https://www.phusionpassenger.com/library/admin/apache/overall_status_report.html ## ## If no path is specified, then the plugin simply execute passenger-status ## hopefully it can be found in your PATH command = "passenger-status -v --show=xml" ` func (r *passenger) SampleConfig() string { return sampleConfig } func (r *passenger) Description() string { return "Read metrics of passenger using passenger-status" } func (g *passenger) Gather(acc telegraf.Accumulator) error { if g.Command == "" { g.Command = "passenger-status -v --show=xml" } cmd, args := g.parseCommand() out, err := exec.Command(cmd, args...).Output() if err != nil { return err } if err = importMetric(out, acc); err != nil { return err } return nil } func importMetric(stat []byte, acc telegraf.Accumulator) error { var p info decoder := xml.NewDecoder(bytes.NewReader(stat)) decoder.CharsetReader = charset.NewReaderLabel if err := decoder.Decode(&p); err != nil { return fmt.Errorf("Cannot parse input with error: %v\n", err) } tags := map[string]string{ "passenger_version": p.Passenger_version, } fields := map[string]interface{}{ "process_count": p.Process_count, "max": p.Max, "capacity_used": p.Capacity_used, "get_wait_list_size": p.Get_wait_list_size, } acc.AddFields("passenger", fields, tags) for _, sg := range p.Supergroups.Supergroup { tags := map[string]string{ "name": sg.Name, } fields := map[string]interface{}{ "get_wait_list_size": sg.Get_wait_list_size, "capacity_used": sg.Capacity_used, } acc.AddFields("passenger_supergroup", fields, tags) for _, group := range sg.Group { tags := map[string]string{ "name": group.Name, "app_root": group.AppRoot, "app_type": group.AppType, } fields := map[string]interface{}{ "get_wait_list_size": group.Get_wait_list_size, "capacity_used": group.Capacity_used, "processes_being_spawned": group.Processes_being_spawned, } acc.AddFields("passenger_group", fields, tags) for _, process := range group.Processes.Process { tags := map[string]string{ "group_name": group.Name, "app_root": group.AppRoot, "supergroup_name": sg.Name, "pid": fmt.Sprintf("%d", process.Pid), "code_revision": process.Code_revision, "life_status": process.Life_status, "process_group_id": process.Process_group_id, } fields := map[string]interface{}{ "concurrency": process.Concurrency, "sessions": process.Sessions, "busyness": process.Busyness, "processed": process.Processed, "spawner_creation_time": process.Spawner_creation_time, "spawn_start_time": process.Spawn_start_time, "spawn_end_time": process.Spawn_end_time, "last_used": process.Last_used, "uptime": process.getUptime(), "cpu": process.Cpu, "rss": process.Rss, "pss": process.Pss, "private_dirty": process.Private_dirty, "swap": process.Swap, "real_memory": process.Real_memory, "vmsize": process.Vmsize, } acc.AddFields("passenger_process", fields, tags) } } } return nil } func init() { inputs.Add("passenger", func() telegraf.Input { return &passenger{} }) }