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package main
import (
"database/sql"
"flag"
"log/slog"
"github.com/grafana/pyroscope-go"
"github.com/martinlehoux/biking_home/cli"
"github.com/martinlehoux/biking_home/config"
"github.com/martinlehoux/kagamigo/kcore"
_ "github.com/mattn/go-sqlite3"
)
var (
configFile = flag.String("config", "config.yaml", "path to the YAML configuration file")
enablePprof = flag.Bool("pprof", false, "expose pprof endpoints at /debug/pprof")
)
func main() {
flag.Parse()
appConfig, err := config.Load(*configFile)
kcore.Expect(err, "failed to load configuration")
stopProfiler, err := startPyroscope(appConfig.Pyroscope)
if err != nil {
kcore.Expect(err, "failed to start pyroscope")
}
if stopProfiler != nil {
defer stopProfiler()
}
db, err := sql.Open("sqlite3", appConfig.Database.Path)
kcore.Expect(err, "failed to open database")
defer db.Close()
cli.Run(db, *configFile, appConfig, flag.Args(), *enablePprof)
}
// startPyroscope starts the continuous profiler when enabled in the config and
// returns a stop function to flush and detach the profiler on shutdown, or nil
// when pyroscope is disabled.
func startPyroscope(appConfig config.PyroscopeConfig) (func(), error) {
if !appConfig.Enabled {
return nil, nil
}
profiler, err := pyroscope.Start(pyroscope.Config{
ApplicationName: appConfig.ApplicationName,
ServerAddress: appConfig.ServerAddress,
Logger: pyroscope.StandardLogger,
ProfileTypes: []pyroscope.ProfileType{
pyroscope.ProfileCPU,
pyroscope.ProfileAllocSpace,
pyroscope.ProfileAllocObjects,
pyroscope.ProfileInuseSpace,
pyroscope.ProfileInuseObjects,
pyroscope.ProfileGoroutines,
},
})
if err != nil {
return nil, err
}
slog.Info("pyroscope enabled", "server", appConfig.ServerAddress, "application", appConfig.ApplicationName)
return func() { _ = profiler.Stop() }, nil
}
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