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Pull request 2352: AGDNS-2690-signal-handler

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Merge in DNS/adguard-home from AGDNS-2690-signal-handler to master

Squashed commit of the following:

commit b6822142312ac814e7c206218bb079a4f364192a
Merge: f597ea1fd 8b2ab8ea8
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Mon Mar 3 18:10:27 2025 +0300

    Merge branch 'master' into AGDNS-2690-signal-handler

commit f597ea1fd2
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Thu Feb 27 20:45:55 2025 +0300

    all: fix logger

commit 582e315eca
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Thu Feb 27 18:40:57 2025 +0300

    home: imp code

commit 1e0f48d32a
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Thu Feb 27 15:26:19 2025 +0300

    home: imp docs

commit aa43bbc1b2
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Mon Feb 24 17:24:33 2025 +0300

    home: signal handler
This commit is contained in:
Stanislav Chzhen 2025-03-03 18:23:01 +03:00
parent 8b2ab8ea87
commit 61fe269cb8
7 changed files with 167 additions and 39 deletions
internal/home
home.go

42
internal/home/home.go
View file

@ -113,31 +113,23 @@ func Main(clientBuildFS fs.FS) {
signals := make(chan os.Signal, 1)
signal.Notify(signals, syscall.SIGINT, syscall.SIGTERM, syscall.SIGHUP, syscall.SIGQUIT)
go func() {
ctx := context.Background()
for {
sig := <-signals
log.Info("Received signal %q", sig)
switch sig {
case syscall.SIGHUP:
globalContext.clients.storage.ReloadARP(ctx)
globalContext.tls.reload()
default:
cleanup(ctx)
cleanupAlways()
close(done)
}
}
}()
ctx := context.Background()
sigHdlr := newSignalHandler(signals, func(ctx context.Context) {
cleanup(ctx)
cleanupAlways()
close(done)
})
go sigHdlr.handle(ctx)
if opts.serviceControlAction != "" {
handleServiceControlAction(opts, clientBuildFS, signals, done)
handleServiceControlAction(opts, clientBuildFS, signals, done, sigHdlr)
return
}
// run the protection
run(opts, clientBuildFS, done)
run(opts, clientBuildFS, done, sigHdlr)
}
// setupContext initializes [globalContext] fields. It also reads and upgrades
@ -278,7 +270,11 @@ func setupOpts(opts options) (err error) {
}
// initContextClients initializes Context clients and related fields.
func initContextClients(ctx context.Context, logger *slog.Logger) (err error) {
func initContextClients(
ctx context.Context,
logger *slog.Logger,
sigHdlr *signalHandler,
) (err error) {
err = setupDNSFilteringConf(ctx, logger, config.Filtering)
if err != nil {
// Don't wrap the error, because it's informative enough as is.
@ -313,6 +309,7 @@ func initContextClients(ctx context.Context, logger *slog.Logger) (err error) {
globalContext.etcHosts,
arpDB,
config.Filtering,
sigHdlr,
)
}
@ -583,7 +580,7 @@ func fatalOnError(err error) {
// run configures and starts AdGuard Home.
//
// TODO(e.burkov): Make opts a pointer.
func run(opts options, clientBuildFS fs.FS, done chan struct{}) {
func run(opts options, clientBuildFS fs.FS, done chan struct{}, sigHdlr *signalHandler) {
// Configure working dir.
err := initWorkingDir(opts)
fatalOnError(err)
@ -599,6 +596,7 @@ func run(opts options, clientBuildFS fs.FS, done chan struct{}) {
// TODO(a.garipov): Use slog everywhere.
slogLogger := newSlogLogger(ls)
sigHdlr.swapLogger(slogLogger)
// Print the first message after logger is configured.
log.Info(version.Full())
@ -621,7 +619,7 @@ func run(opts options, clientBuildFS fs.FS, done chan struct{}) {
// TODO(s.chzhen): Use it for the entire initialization process.
ctx := context.Background()
err = initContextClients(ctx, slogLogger)
err = initContextClients(ctx, slogLogger, sigHdlr)
fatalOnError(err)
err = setupOpts(opts)
@ -664,6 +662,8 @@ func run(opts options, clientBuildFS fs.FS, done chan struct{}) {
onConfigModified()
}
sigHdlr.addTLSManager(globalContext.tls)
globalContext.web, err = initWeb(ctx, opts, clientBuildFS, upd, slogLogger, customURL)
fatalOnError(err)