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main.go
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main.go
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package main
import (
"flag"
"net/http"
"github.com/go-kit/log"
"github.com/go-kit/log/level"
"github.com/gorilla/mux"
"github.com/grafana/dskit/server"
"github.com/prometheus/client_golang/prometheus"
"github.com/grafana/loki/v3/pkg/logqlanalyzer"
"github.com/grafana/loki/v3/pkg/sizing"
util_log "github.com/grafana/loki/v3/pkg/util/log"
)
func main() {
cfg := getConfig()
util_log.InitLogger(&server.Config{
LogLevel: cfg.LogLevel,
}, prometheus.DefaultRegisterer, false)
s, err := createServer(cfg, util_log.Logger)
if err != nil {
level.Error(util_log.Logger).Log("msg", "error while creating the server", "err", err)
}
err = s.Run()
defer s.Shutdown()
if err != nil {
level.Error(util_log.Logger).Log("msg", "error while running the server", "err", err)
}
}
func getConfig() server.Config {
cfg := server.Config{}
cfg.RegisterFlags(flag.CommandLine)
flag.Parse()
return cfg
}
func createServer(cfg server.Config, logger log.Logger) (*server.Server, error) {
s, err := server.New(cfg)
if err != nil {
return nil, err
}
s.HTTP.Use(mux.CORSMethodMiddleware(s.HTTP))
s.HTTP.Use(logqlanalyzer.CorsMiddleware())
s.HTTP.Handle("/api/logql-analyze", &logqlanalyzer.LogQLAnalyzeHandler{}).Methods(http.MethodPost, http.MethodOptions)
sizingHandler := sizing.NewHandler(log.With(logger, "component", "sizing"))
s.HTTP.Handle("/api/sizing/helm", http.HandlerFunc(sizingHandler.GenerateHelmValues)).Methods(http.MethodGet, http.MethodOptions)
s.HTTP.Handle("/api/sizing/nodes", http.HandlerFunc(sizingHandler.Nodes)).Methods(http.MethodGet, http.MethodOptions)
s.HTTP.Handle("/api/sizing/cluster", http.HandlerFunc(sizingHandler.Cluster)).Methods(http.MethodGet, http.MethodOptions)
s.HTTP.HandleFunc("/ready", func(w http.ResponseWriter, _ *http.Request) {
http.Error(w, "ready", http.StatusOK)
}).Methods(http.MethodGet)
return s, err
}