91 lines
2.3 KiB
Go
91 lines
2.3 KiB
Go
// Copyright 2022 The Prometheus Authors
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package collector
|
|
|
|
import (
|
|
"context"
|
|
"sync"
|
|
|
|
"github.com/go-kit/log"
|
|
"github.com/prometheus-community/postgres_exporter/config"
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
)
|
|
|
|
type ProbeCollector struct {
|
|
registry *prometheus.Registry
|
|
collectors map[string]Collector
|
|
logger log.Logger
|
|
instance *instance
|
|
}
|
|
|
|
func NewProbeCollector(logger log.Logger, excludeDatabases []string, registry *prometheus.Registry, dsn config.DSN) (*ProbeCollector, error) {
|
|
collectors := make(map[string]Collector)
|
|
initiatedCollectorsMtx.Lock()
|
|
defer initiatedCollectorsMtx.Unlock()
|
|
for key, enabled := range collectorState {
|
|
// TODO: Handle filters
|
|
// if !*enabled || (len(f) > 0 && !f[key]) {
|
|
// continue
|
|
// }
|
|
if !*enabled {
|
|
continue
|
|
}
|
|
if collector, ok := initiatedCollectors[key]; ok {
|
|
collectors[key] = collector
|
|
} else {
|
|
collector, err := factories[key](
|
|
collectorConfig{
|
|
logger: log.With(logger, "collector", key),
|
|
excludeDatabases: excludeDatabases,
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
collectors[key] = collector
|
|
initiatedCollectors[key] = collector
|
|
}
|
|
}
|
|
|
|
instance, err := newInstance(dsn.GetConnectionString())
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &ProbeCollector{
|
|
registry: registry,
|
|
collectors: collectors,
|
|
logger: logger,
|
|
instance: instance,
|
|
}, nil
|
|
}
|
|
|
|
func (pc *ProbeCollector) Describe(ch chan<- *prometheus.Desc) {
|
|
}
|
|
|
|
func (pc *ProbeCollector) Collect(ch chan<- prometheus.Metric) {
|
|
wg := sync.WaitGroup{}
|
|
wg.Add(len(pc.collectors))
|
|
for name, c := range pc.collectors {
|
|
go func(name string, c Collector) {
|
|
execute(context.TODO(), name, c, pc.instance, ch, pc.logger)
|
|
wg.Done()
|
|
}(name, c)
|
|
}
|
|
wg.Wait()
|
|
}
|
|
|
|
func (pc *ProbeCollector) Close() error {
|
|
return pc.instance.Close()
|
|
}
|