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Log duration of reloads

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Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>
This commit is contained in:
Julien Pivotto 2020-08-06 21:48:52 +02:00
parent c7a17f6491
commit d661f84748
1 changed files with 79 additions and 52 deletions
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131
cmd/prometheus/main.go
View file

@ -436,56 +436,73 @@ func main() {
conntrack.DialWithTracing(),
)
reloaders := []func(cfg *config.Config) error{
remoteStorage.ApplyConfig,
webHandler.ApplyConfig,
func(cfg *config.Config) error {
if cfg.GlobalConfig.QueryLogFile == "" {
queryEngine.SetQueryLogger(nil)
return nil
}
l, err := logging.NewJSONFileLogger(cfg.GlobalConfig.QueryLogFile)
if err != nil {
return err
}
queryEngine.SetQueryLogger(l)
return nil
},
// The Scrape and notifier managers need to reload before the Discovery manager as
// they need to read the most updated config when receiving the new targets list.
scrapeManager.ApplyConfig,
func(cfg *config.Config) error {
c := make(map[string]sd_config.ServiceDiscoveryConfig)
for _, v := range cfg.ScrapeConfigs {
c[v.JobName] = v.ServiceDiscoveryConfig
}
return discoveryManagerScrape.ApplyConfig(c)
},
notifierManager.ApplyConfig,
func(cfg *config.Config) error {
c := make(map[string]sd_config.ServiceDiscoveryConfig)
for k, v := range cfg.AlertingConfig.AlertmanagerConfigs.ToMap() {
c[k] = v.ServiceDiscoveryConfig
}
return discoveryManagerNotify.ApplyConfig(c)
},
func(cfg *config.Config) error {
// Get all rule files matching the configuration paths.
var files []string
for _, pat := range cfg.RuleFiles {
fs, err := filepath.Glob(pat)
if err != nil {
// The only error can be a bad pattern.
return errors.Wrapf(err, "error retrieving rule files for %s", pat)
reloaders := []reloader{
{
name: "remote_storage",
reloader: remoteStorage.ApplyConfig,
}, {
name: "web_handler",
reloader: webHandler.ApplyConfig,
}, {
name: "query_engine",
reloader: func(cfg *config.Config) error {
if cfg.GlobalConfig.QueryLogFile == "" {
queryEngine.SetQueryLogger(nil)
return nil
}
files = append(files, fs...)
}
return ruleManager.Update(
time.Duration(cfg.GlobalConfig.EvaluationInterval),
files,
cfg.GlobalConfig.ExternalLabels,
)
l, err := logging.NewJSONFileLogger(cfg.GlobalConfig.QueryLogFile)
if err != nil {
return err
}
queryEngine.SetQueryLogger(l)
return nil
},
}, {
// The Scrape and notifier managers need to reload before the Discovery manager as
// they need to read the most updated config when receiving the new targets list.
name: "scrape",
reloader: scrapeManager.ApplyConfig,
}, {
name: "scrape_sd",
reloader: func(cfg *config.Config) error {
c := make(map[string]sd_config.ServiceDiscoveryConfig)
for _, v := range cfg.ScrapeConfigs {
c[v.JobName] = v.ServiceDiscoveryConfig
}
return discoveryManagerScrape.ApplyConfig(c)
},
}, {
name: "notify",
reloader: notifierManager.ApplyConfig,
}, {
name: "notify_sd",
reloader: func(cfg *config.Config) error {
c := make(map[string]sd_config.ServiceDiscoveryConfig)
for k, v := range cfg.AlertingConfig.AlertmanagerConfigs.ToMap() {
c[k] = v.ServiceDiscoveryConfig
}
return discoveryManagerNotify.ApplyConfig(c)
},
}, {
name: "rules",
reloader: func(cfg *config.Config) error {
// Get all rule files matching the configuration paths.
var files []string
for _, pat := range cfg.RuleFiles {
fs, err := filepath.Glob(pat)
if err != nil {
// The only error can be a bad pattern.
return errors.Wrapf(err, "error retrieving rule files for %s", pat)
}
files = append(files, fs...)
}
return ruleManager.Update(
time.Duration(cfg.GlobalConfig.EvaluationInterval),
files,
cfg.GlobalConfig.ExternalLabels,
)
},
},
}
@ -821,7 +838,14 @@ func (i *safePromQLNoStepSubqueryInterval) Get(int64) int64 {
return i.value.Load()
}
func reloadConfig(filename string, logger log.Logger, noStepSuqueryInterval *safePromQLNoStepSubqueryInterval, rls ...func(*config.Config) error) (err error) {
type reloader struct {
name string
reloader func(*config.Config) error
}
func reloadConfig(filename string, logger log.Logger, noStepSuqueryInterval *safePromQLNoStepSubqueryInterval, rls ...reloader) (err error) {
start := time.Now()
timings := []interface{}{}
level.Info(logger).Log("msg", "Loading configuration file", "filename", filename)
defer func() {
@ -840,17 +864,20 @@ func reloadConfig(filename string, logger log.Logger, noStepSuqueryInterval *saf
failed := false
for _, rl := range rls {
if err := rl(conf); err != nil {
rstart := time.Now()
if err := rl.reloader(conf); err != nil {
level.Error(logger).Log("msg", "Failed to apply configuration", "err", err)
failed = true
}
timings = append(timings, rl.name, time.Since(rstart))
}
if failed {
return errors.Errorf("one or more errors occurred while applying the new configuration (--config.file=%q)", filename)
}
noStepSuqueryInterval.Set(conf.GlobalConfig.EvaluationInterval)
level.Info(logger).Log("msg", "Completed loading of configuration file", "filename", filename)
l := []interface{}{"msg", "Completed loading of configuration file", "filename", filename, "totalDuration", time.Since(start)}
level.Info(logger).Log(append(l, timings...)...)
return nil
}