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// SPDX-License-Identifier: GPL-3.0-or-later
package gearman
import (
"bufio"
"bytes"
"errors"
"fmt"
"strconv"
"strings"
)
func (g *Gearman) collect() (map[string]int64, error) {
if g.conn == nil {
conn, err := g.establishConn()
if err != nil {
return nil, err
}
g.conn = conn
}
status, err := g.conn.queryStatus()
if err != nil {
g.Cleanup()
return nil, fmt.Errorf("couldn't query status: %v", err)
}
prioStatus, err := g.conn.queryPriorityStatus()
if err != nil {
g.Cleanup()
return nil, fmt.Errorf("couldn't query priority status: %v", err)
}
mx := make(map[string]int64)
if err := g.collectStatus(mx, status); err != nil {
return nil, fmt.Errorf("couldn't collect status: %v", err)
}
if err := g.collectPriorityStatus(mx, prioStatus); err != nil {
return nil, fmt.Errorf("couldn't collect priority status: %v", err)
}
return mx, nil
}
func (g *Gearman) collectStatus(mx map[string]int64, statusData []byte) error {
/*
Same output as the "gearadmin --status" command:
FUNCTION\tTOTAL\tRUNNING\tAVAILABLE_WORKERS
E.g.:
prefix generic_worker4 78 78 500
generic_worker2 78 78 500
generic_worker3 0 0 760
generic_worker1 0 0 500
*/
seen := make(map[string]bool)
var foundEnd bool
sc := bufio.NewScanner(bytes.NewReader(statusData))
mx["total_jobs_queued"] = 0
mx["total_jobs_running"] = 0
mx["total_jobs_waiting"] = 0
mx["total_workers_avail"] = 0
for sc.Scan() {
line := strings.TrimSpace(sc.Text())
if foundEnd = line == "."; foundEnd {
break
}
parts := strings.Fields(line)
// Gearman does not remove old tasks. We are only interested in tasks that have stats.
if len(parts) < 4 {
continue
}
name := strings.Join(parts[:len(parts)-3], "_")
metrics := parts[len(parts)-3:]
var queued, running, availWorkers int64
var err error
if queued, err = strconv.ParseInt(metrics[0], 10, 64); err != nil {
return fmt.Errorf("couldn't parse queued count: %v", err)
}
if running, err = strconv.ParseInt(metrics[1], 10, 64); err != nil {
return fmt.Errorf("couldn't parse running count: %v", err)
}
if availWorkers, err = strconv.ParseInt(metrics[2], 10, 64); err != nil {
return fmt.Errorf("couldn't parse available count: %v", err)
}
px := fmt.Sprintf("function_%s_", name)
waiting := queued - running
mx[px+"jobs_queued"] = queued
mx[px+"jobs_running"] = running
mx[px+"jobs_waiting"] = waiting
mx[px+"workers_available"] = availWorkers
mx["total_jobs_queued"] += queued
mx["total_jobs_running"] += running
mx["total_jobs_waiting"] += waiting
mx["total_workers_available"] += availWorkers
seen[name] = true
}
if !foundEnd {
return errors.New("unexpected status response")
}
for name := range seen {
if !g.seenTasks[name] {
g.seenTasks[name] = true
g.addFunctionStatusCharts(name)
}
}
for name := range g.seenTasks {
if !seen[name] {
delete(g.seenTasks, name)
g.removeFunctionStatusCharts(name)
}
}
return nil
}
func (g *Gearman) collectPriorityStatus(mx map[string]int64, prioStatusData []byte) error {
/*
Same output as the "gearadmin --priority-status" command:
FUNCTION\tHIGH\tNORMAL\tLOW\tAVAILABLE_WORKERS
*/
seen := make(map[string]bool)
var foundEnd bool
sc := bufio.NewScanner(bytes.NewReader(prioStatusData))
mx["total_high_priority_jobs"] = 0
mx["total_normal_priority_jobs"] = 0
mx["total_low_priority_jobs"] = 0
for sc.Scan() {
line := strings.TrimSpace(sc.Text())
if foundEnd = line == "."; foundEnd {
break
}
parts := strings.Fields(line)
if len(parts) < 5 {
continue
}
name := strings.Join(parts[:len(parts)-4], "_")
metrics := parts[len(parts)-4:]
var high, normal, low int64
var err error
if high, err = strconv.ParseInt(metrics[0], 10, 64); err != nil {
return fmt.Errorf("couldn't parse high count: %v", err)
}
if normal, err = strconv.ParseInt(metrics[1], 10, 64); err != nil {
return fmt.Errorf("couldn't parse normal count: %v", err)
}
if low, err = strconv.ParseInt(metrics[2], 10, 64); err != nil {
return fmt.Errorf("couldn't parse low count: %v", err)
}
px := fmt.Sprintf("function_%s_", name)
mx[px+"high_priority_jobs"] = high
mx[px+"normal_priority_jobs"] = normal
mx[px+"low_priority_jobs"] = low
mx["total_high_priority_jobs"] += high
mx["total_normal_priority_jobs"] += normal
mx["total_low_priority_jobs"] += low
seen[name] = true
}
if !foundEnd {
return errors.New("unexpected priority status response")
}
for name := range seen {
if !g.seenPriorityTasks[name] {
g.seenPriorityTasks[name] = true
g.addFunctionPriorityStatusCharts(name)
}
}
for name := range g.seenPriorityTasks {
if !seen[name] {
delete(g.seenPriorityTasks, name)
g.removeFunctionPriorityStatusCharts(name)
}
}
return nil
}
func (g *Gearman) establishConn() (gearmanConn, error) {
conn := g.newConn(g.Config)
if err := conn.connect(); err != nil {
return nil, err
}
return conn, nil
}
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