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package main
import (
"context"
"errors"
"flag"
"fmt"
"os"
"os/signal"
"sync"
"syscall"
"rgdd.se/silent-ct/internal/manager"
"rgdd.se/silent-ct/internal/options"
"rgdd.se/silent-ct/pkg/monitor"
"rgdd.se/silent-ct/pkg/server"
)
func main() {
opts, err := options.New(os.Args[0], os.Args[1:])
if err != nil {
if errors.Is(err, flag.ErrHelp) {
os.Exit(0)
}
die("options: %v", err)
}
var c options.Config
if err := c.FromFile(opts.ConfigFile); err != nil {
die("configuration: %v", err)
}
fmt.Printf("%v\n", c)
srv, err := server.New(server.Config{Address: opts.ListenAddr, Nodes: c.Nodes})
if err != nil {
die("create new server: %v", err)
}
mon, err := monitor.New(monitor.Config{Callback: &c.Monitor})
if err != nil {
die("create new monitor: %v", err)
}
mgr, err := manager.New(manager.Config{Nodes: c.Nodes})
if err != nil {
die("create new manager: %v", err)
}
configCh := make(chan []monitor.MessageLogConfig)
defer close(configCh)
progressCh := make(chan monitor.MessageLogProgress)
defer close(progressCh)
submitCh := make(chan server.MessageNodeSubmission)
defer close(submitCh)
errorCh := make(chan error)
defer close(errorCh)
ctx, cancel := context.WithCancel(context.Background())
var wg sync.WaitGroup
defer wg.Wait()
wg.Add(1)
go func() {
defer wg.Done()
defer cancel()
await(ctx)
}()
wg.Add(1)
go func() {
defer wg.Done()
defer cancel()
if err := srv.Run(ctx, submitCh, errorCh); err != nil {
die("server: %v\n", err)
}
}()
wg.Add(1)
go func() {
defer wg.Done()
defer cancel()
mon.Run(ctx, configCh, progressCh, errorCh)
}()
wg.Add(1)
go func() {
defer wg.Done()
defer cancel()
if err := mgr.Run(ctx, submitCh, progressCh, configCh, errorCh); err != nil {
die("manager: %v\n", err)
}
}()
}
func await(ctx context.Context) {
sigs := make(chan os.Signal, 1)
defer close(sigs)
signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
select {
case <-sigs:
case <-ctx.Done():
}
}
func die(format string, args ...interface{}) {
fmt.Printf("fatal: "+format, args)
os.Exit(1)
}
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