110 lines
2.1 KiB
Go
110 lines
2.1 KiB
Go
package main
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import (
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"context"
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"errors"
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"fmt"
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"log"
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"net/http"
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"os"
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"os/signal"
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"sync"
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"syscall"
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"time"
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_ "github.com/duckdb/duckdb-go/v2"
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"gopkg.in/ini.v1"
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"datasource/collector"
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"datasource/config"
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"datasource/controller"
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"datasource/store"
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)
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func main() {
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// todo (david): init logger
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var wg sync.WaitGroup
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defer wg.Wait()
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ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
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defer stop()
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cfg, err := ini.Load("./config.ini")
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if err != nil {
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log.Fatal(err)
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}
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dataSourceConfig, err := config.LoadDataSourceConfig(cfg)
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if err != nil {
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log.Fatal(err)
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}
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store, err := store.NewStore(dataSourceConfig.DBPath)
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if err != nil {
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log.Fatal(err)
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}
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defer store.Close()
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redisConfig, err := config.LoadRedisConfig(cfg)
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if err != nil {
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log.Fatal(err)
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}
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redisCollector := collector.NewRedisCollector(redisConfig, store)
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defer redisCollector.Close()
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collectors := []collector.Collector{redisCollector}
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for _, collector := range collectors {
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wg.Add(1)
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go func() {
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defer wg.Done()
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ticker := time.NewTicker(5 * time.Second)
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defer ticker.Stop()
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for {
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select {
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case <-ctx.Done():
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return
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case <-ticker.C:
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if err := collector.Collect(ctx); err != nil {
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log.Printf("failed to collect: %v", err)
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}
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}
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}
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}()
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}
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controller := controller.NewController(store)
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mux := http.NewServeMux()
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mux.HandleFunc("GET /api/v1/metrics", controller.GetMetrics)
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// todo (david)
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// mux.HandleFunc("DELETE /api/v1/metrics", controller.DeleteMetrics)
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srv := &http.Server{
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Addr: fmt.Sprintf("0.0.0.0:%d", dataSourceConfig.Port),
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Handler: mux,
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}
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wg.Add(1)
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go func() {
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defer wg.Done()
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if err := srv.ListenAndServe(); err != nil && !errors.Is(err, http.ErrServerClosed) {
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log.Fatalf("http.ListenAndServe: %v\n", err)
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}
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}()
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<-ctx.Done()
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srv.Shutdown(context.Background())
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srvShutdownCtx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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if err := srv.Shutdown(srvShutdownCtx); err != nil {
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log.Fatalf("srv.Shutdown: %v", err)
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}
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}
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