523 lines
12 KiB
Go
523 lines
12 KiB
Go
package mesos
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import (
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"encoding/json"
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"errors"
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"io/ioutil"
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"log"
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"net"
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"net/http"
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"strconv"
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"sync"
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"time"
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"github.com/influxdata/telegraf"
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"github.com/influxdata/telegraf/plugins/inputs"
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jsonparser "github.com/influxdata/telegraf/plugins/parsers/json"
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)
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type Role string
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const (
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MASTER Role = "master"
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SLAVE = "slave"
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)
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type Mesos struct {
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Timeout int
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Masters []string
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MasterCols []string `toml:"master_collections"`
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Slaves []string
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SlaveCols []string `toml:"slave_collections"`
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//SlaveTasks bool
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}
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var allMetrics = map[Role][]string{
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MASTER: []string{"resources", "master", "system", "agents", "frameworks", "tasks", "messages", "evqueue", "registrar"},
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SLAVE: []string{"resources", "agent", "system", "executors", "tasks", "messages"},
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}
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var sampleConfig = `
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## Timeout, in ms.
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timeout = 100
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## A list of Mesos masters.
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masters = ["localhost:5050"]
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## Master metrics groups to be collected, by default, all enabled.
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master_collections = [
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"resources",
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"master",
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"system",
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"agents",
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"frameworks",
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"tasks",
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"messages",
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"evqueue",
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"registrar",
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]
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## A list of Mesos slaves, default is []
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# slaves = []
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## Slave metrics groups to be collected, by default, all enabled.
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# slave_collections = [
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# "resources",
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# "agent",
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# "system",
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# "executors",
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# "tasks",
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# "messages",
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# ]
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`
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// SampleConfig returns a sample configuration block
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func (m *Mesos) SampleConfig() string {
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return sampleConfig
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}
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// Description just returns a short description of the Mesos plugin
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func (m *Mesos) Description() string {
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return "Telegraf plugin for gathering metrics from N Mesos masters"
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}
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func (m *Mesos) SetDefaults() {
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if len(m.MasterCols) == 0 {
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m.MasterCols = allMetrics[MASTER]
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}
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if len(m.SlaveCols) == 0 {
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m.SlaveCols = allMetrics[SLAVE]
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}
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if m.Timeout == 0 {
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log.Println("I! [mesos] Missing timeout value, setting default value (100ms)")
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m.Timeout = 100
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}
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}
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// Gather() metrics from given list of Mesos Masters
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func (m *Mesos) Gather(acc telegraf.Accumulator) error {
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var wg sync.WaitGroup
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m.SetDefaults()
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for _, v := range m.Masters {
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wg.Add(1)
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go func(c string) {
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acc.AddError(m.gatherMainMetrics(c, ":5050", MASTER, acc))
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wg.Done()
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return
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}(v)
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}
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for _, v := range m.Slaves {
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wg.Add(1)
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go func(c string) {
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acc.AddError(m.gatherMainMetrics(c, ":5051", SLAVE, acc))
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wg.Done()
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return
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}(v)
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// if !m.SlaveTasks {
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// continue
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// }
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// wg.Add(1)
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// go func(c string) {
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// acc.AddError(m.gatherSlaveTaskMetrics(c, ":5051", acc))
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// wg.Done()
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// return
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// }(v)
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}
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wg.Wait()
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return nil
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}
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// metricsDiff() returns set names for removal
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func metricsDiff(role Role, w []string) []string {
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b := []string{}
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s := make(map[string]bool)
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if len(w) == 0 {
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return b
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}
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for _, v := range w {
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s[v] = true
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}
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for _, d := range allMetrics[role] {
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if _, ok := s[d]; !ok {
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b = append(b, d)
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}
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}
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return b
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}
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// masterBlocks serves as kind of metrics registry groupping them in sets
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func getMetrics(role Role, group string) []string {
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var m map[string][]string
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m = make(map[string][]string)
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if role == MASTER {
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m["resources"] = []string{
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"master/cpus_percent",
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"master/cpus_used",
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"master/cpus_total",
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"master/cpus_revocable_percent",
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"master/cpus_revocable_total",
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"master/cpus_revocable_used",
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"master/disk_percent",
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"master/disk_used",
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"master/disk_total",
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"master/disk_revocable_percent",
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"master/disk_revocable_total",
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"master/disk_revocable_used",
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"master/gpus_percent",
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"master/gpus_used",
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"master/gpus_total",
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"master/gpus_revocable_percent",
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"master/gpus_revocable_total",
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"master/gpus_revocable_used",
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"master/mem_percent",
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"master/mem_used",
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"master/mem_total",
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"master/mem_revocable_percent",
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"master/mem_revocable_total",
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"master/mem_revocable_used",
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}
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m["master"] = []string{
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"master/elected",
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"master/uptime_secs",
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}
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m["system"] = []string{
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"system/cpus_total",
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"system/load_15min",
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"system/load_5min",
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"system/load_1min",
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"system/mem_free_bytes",
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"system/mem_total_bytes",
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}
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m["agents"] = []string{
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"master/slave_registrations",
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"master/slave_removals",
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"master/slave_reregistrations",
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"master/slave_shutdowns_scheduled",
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"master/slave_shutdowns_canceled",
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"master/slave_shutdowns_completed",
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"master/slaves_active",
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"master/slaves_connected",
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"master/slaves_disconnected",
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"master/slaves_inactive",
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}
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m["frameworks"] = []string{
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"master/frameworks_active",
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"master/frameworks_connected",
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"master/frameworks_disconnected",
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"master/frameworks_inactive",
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"master/outstanding_offers",
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}
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m["tasks"] = []string{
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"master/tasks_error",
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"master/tasks_failed",
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"master/tasks_finished",
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"master/tasks_killed",
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"master/tasks_lost",
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"master/tasks_running",
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"master/tasks_staging",
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"master/tasks_starting",
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}
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m["messages"] = []string{
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"master/invalid_executor_to_framework_messages",
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"master/invalid_framework_to_executor_messages",
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"master/invalid_status_update_acknowledgements",
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"master/invalid_status_updates",
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"master/dropped_messages",
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"master/messages_authenticate",
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"master/messages_deactivate_framework",
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"master/messages_decline_offers",
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"master/messages_executor_to_framework",
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"master/messages_exited_executor",
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"master/messages_framework_to_executor",
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"master/messages_kill_task",
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"master/messages_launch_tasks",
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"master/messages_reconcile_tasks",
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"master/messages_register_framework",
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"master/messages_register_slave",
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"master/messages_reregister_framework",
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"master/messages_reregister_slave",
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"master/messages_resource_request",
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"master/messages_revive_offers",
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"master/messages_status_update",
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"master/messages_status_update_acknowledgement",
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"master/messages_unregister_framework",
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"master/messages_unregister_slave",
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"master/messages_update_slave",
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"master/recovery_slave_removals",
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"master/slave_removals/reason_registered",
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"master/slave_removals/reason_unhealthy",
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"master/slave_removals/reason_unregistered",
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"master/valid_framework_to_executor_messages",
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"master/valid_status_update_acknowledgements",
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"master/valid_status_updates",
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"master/task_lost/source_master/reason_invalid_offers",
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"master/task_lost/source_master/reason_slave_removed",
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"master/task_lost/source_slave/reason_executor_terminated",
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"master/valid_executor_to_framework_messages",
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}
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m["evqueue"] = []string{
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"master/event_queue_dispatches",
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"master/event_queue_http_requests",
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"master/event_queue_messages",
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}
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m["registrar"] = []string{
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"registrar/state_fetch_ms",
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"registrar/state_store_ms",
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"registrar/state_store_ms/max",
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"registrar/state_store_ms/min",
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"registrar/state_store_ms/p50",
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"registrar/state_store_ms/p90",
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"registrar/state_store_ms/p95",
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"registrar/state_store_ms/p99",
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"registrar/state_store_ms/p999",
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"registrar/state_store_ms/p9999",
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}
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} else if role == SLAVE {
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m["resources"] = []string{
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"slave/cpus_percent",
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"slave/cpus_used",
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"slave/cpus_total",
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"slave/cpus_revocable_percent",
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"slave/cpus_revocable_total",
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"slave/cpus_revocable_used",
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"slave/disk_percent",
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"slave/disk_used",
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"slave/disk_total",
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"slave/disk_revocable_percent",
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"slave/disk_revocable_total",
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"slave/disk_revocable_used",
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"slave/gpus_percent",
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"slave/gpus_used",
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"slave/gpus_total",
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"slave/gpus_revocable_percent",
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"slave/gpus_revocable_total",
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"slave/gpus_revocable_used",
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"slave/mem_percent",
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"slave/mem_used",
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"slave/mem_total",
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"slave/mem_revocable_percent",
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"slave/mem_revocable_total",
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"slave/mem_revocable_used",
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}
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m["agent"] = []string{
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"slave/registered",
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"slave/uptime_secs",
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}
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m["system"] = []string{
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"system/cpus_total",
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"system/load_15min",
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"system/load_5min",
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"system/load_1min",
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"system/mem_free_bytes",
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"system/mem_total_bytes",
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}
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m["executors"] = []string{
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"containerizer/mesos/container_destroy_errors",
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"slave/container_launch_errors",
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"slave/executors_preempted",
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"slave/frameworks_active",
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"slave/executor_directory_max_allowed_age_secs",
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"slave/executors_registering",
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"slave/executors_running",
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"slave/executors_terminated",
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"slave/executors_terminating",
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"slave/recovery_errors",
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}
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m["tasks"] = []string{
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"slave/tasks_failed",
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"slave/tasks_finished",
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"slave/tasks_killed",
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"slave/tasks_lost",
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"slave/tasks_running",
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"slave/tasks_staging",
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"slave/tasks_starting",
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}
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m["messages"] = []string{
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"slave/invalid_framework_messages",
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"slave/invalid_status_updates",
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"slave/valid_framework_messages",
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"slave/valid_status_updates",
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}
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}
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ret, ok := m[group]
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if !ok {
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log.Printf("I! [mesos] Unknown %s metrics group: %s\n", role, group)
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return []string{}
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}
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return ret
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}
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func (m *Mesos) filterMetrics(role Role, metrics *map[string]interface{}) {
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var ok bool
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var selectedMetrics []string
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if role == MASTER {
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selectedMetrics = m.MasterCols
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} else if role == SLAVE {
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selectedMetrics = m.SlaveCols
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}
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for _, k := range metricsDiff(role, selectedMetrics) {
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for _, v := range getMetrics(role, k) {
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if _, ok = (*metrics)[v]; ok {
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delete((*metrics), v)
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}
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}
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}
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}
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var tr = &http.Transport{
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ResponseHeaderTimeout: time.Duration(3 * time.Second),
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}
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var client = &http.Client{
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Transport: tr,
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Timeout: time.Duration(4 * time.Second),
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}
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// TaskStats struct for JSON API output /monitor/statistics
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type TaskStats struct {
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ExecutorID string `json:"executor_id"`
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FrameworkID string `json:"framework_id"`
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Statistics map[string]interface{} `json:"statistics"`
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}
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func (m *Mesos) gatherSlaveTaskMetrics(address string, defaultPort string, acc telegraf.Accumulator) error {
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var metrics []TaskStats
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host, _, err := net.SplitHostPort(address)
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if err != nil {
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host = address
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address = address + defaultPort
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}
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tags := map[string]string{
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"server": host,
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}
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ts := strconv.Itoa(m.Timeout) + "ms"
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resp, err := client.Get("http://" + address + "/monitor/statistics?timeout=" + ts)
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if err != nil {
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return err
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}
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data, err := ioutil.ReadAll(resp.Body)
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resp.Body.Close()
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if err != nil {
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return err
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}
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if err = json.Unmarshal([]byte(data), &metrics); err != nil {
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return errors.New("Error decoding JSON response")
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}
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for _, task := range metrics {
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tags["framework_id"] = task.FrameworkID
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jf := jsonparser.JSONFlattener{}
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err = jf.FlattenJSON("", task.Statistics)
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if err != nil {
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return err
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}
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timestamp := time.Unix(int64(jf.Fields["timestamp"].(float64)), 0)
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jf.Fields["executor_id"] = task.ExecutorID
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acc.AddFields("mesos_tasks", jf.Fields, tags, timestamp)
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}
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return nil
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}
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// This should not belong to the object
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func (m *Mesos) gatherMainMetrics(a string, defaultPort string, role Role, acc telegraf.Accumulator) error {
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var jsonOut map[string]interface{}
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host, _, err := net.SplitHostPort(a)
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if err != nil {
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host = a
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a = a + defaultPort
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}
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tags := map[string]string{
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"server": host,
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"role": string(role),
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}
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ts := strconv.Itoa(m.Timeout) + "ms"
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resp, err := client.Get("http://" + a + "/metrics/snapshot?timeout=" + ts)
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if err != nil {
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return err
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}
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data, err := ioutil.ReadAll(resp.Body)
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resp.Body.Close()
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if err != nil {
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return err
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}
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if err = json.Unmarshal([]byte(data), &jsonOut); err != nil {
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return errors.New("Error decoding JSON response")
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}
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m.filterMetrics(role, &jsonOut)
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jf := jsonparser.JSONFlattener{}
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err = jf.FlattenJSON("", jsonOut)
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if err != nil {
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return err
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}
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if role == MASTER {
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if jf.Fields["master/elected"] != 0.0 {
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tags["state"] = "leader"
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} else {
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tags["state"] = "standby"
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}
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}
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acc.AddFields("mesos", jf.Fields, tags)
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return nil
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}
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func init() {
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inputs.Add("mesos", func() telegraf.Input {
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return &Mesos{}
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})
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}
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