61 lines
2.1 KiB
Go

package clickhouseprometheus
import (
"context"
"github.com/SigNoz/signoz/pkg/factory"
"github.com/SigNoz/signoz/pkg/prometheus"
"github.com/SigNoz/signoz/pkg/telemetrystore"
"github.com/prometheus/common/model"
"github.com/prometheus/prometheus/model/labels"
"github.com/prometheus/prometheus/storage"
"github.com/prometheus/prometheus/storage/remote"
)
var stCallback = func() (int64, error) {
return int64(model.Latest), nil
}
type provider struct {
settings factory.ScopedProviderSettings
telemetryStore telemetrystore.TelemetryStore
engine *prometheus.Engine
queryable storage.SampleAndChunkQueryable
}
func NewFactory(telemetryStore telemetrystore.TelemetryStore) factory.ProviderFactory[prometheus.Prometheus, prometheus.Config] {
return factory.NewProviderFactory(factory.MustNewName("clickhouse"), func(ctx context.Context, providerSettings factory.ProviderSettings, config prometheus.Config) (prometheus.Prometheus, error) {
return New(ctx, providerSettings, config, telemetryStore)
})
}
func New(ctx context.Context, providerSettings factory.ProviderSettings, config prometheus.Config, telemetryStore telemetrystore.TelemetryStore) (prometheus.Prometheus, error) {
settings := factory.NewScopedProviderSettings(providerSettings, "github.com/SigNoz/signoz/pkg/prometheus/clickhouseprometheus")
readClient := NewReadClient(settings, telemetryStore)
return &provider{
settings: settings,
telemetryStore: telemetryStore,
engine: prometheus.NewEngine(settings.Logger(), config),
queryable: remote.NewSampleAndChunkQueryableClient(readClient, labels.EmptyLabels(), []*labels.Matcher{}, false, stCallback),
}, nil
}
func (provider *provider) Engine() *prometheus.Engine {
return provider.engine
}
func (provider *provider) Storage() storage.Queryable {
return provider
}
func (provider *provider) Querier(mint, maxt int64) (storage.Querier, error) {
querier, err := provider.queryable.Querier(mint, maxt)
if err != nil {
return nil, err
}
return storage.NewMergeQuerier(nil, []storage.Querier{querier}, storage.ChainedSeriesMerge), nil
}