frostfs-s3-gw/cmd/s3-gw/app.go

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package main
import (
"context"
"encoding/hex"
"fmt"
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"net/http"
"os"
"os/signal"
"runtime/debug"
"sync"
"sync/atomic"
"syscall"
"time"
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"git.frostfs.info/TrueCloudLab/frostfs-observability/tracing"
grpctracing "git.frostfs.info/TrueCloudLab/frostfs-observability/tracing/grpc"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/auth"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/cache"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/handler"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/layer"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/notifications"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/resolver"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/internal/frostfs"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/internal/frostfs/services"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/internal/logs"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/internal/version"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/internal/wallet"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/internal/xml"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/metrics"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/pkg/service/tree"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
treepool "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool/tree"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
"github.com/go-chi/chi/v5"
"github.com/go-chi/chi/v5/middleware"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
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"github.com/spf13/viper"
"go.uber.org/zap"
"google.golang.org/grpc"
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)
type (
// App is the main application structure.
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App struct {
ctr auth.Center
log *zap.Logger
cfg *viper.Viper
pool *pool.Pool
treePool *treepool.Pool
key *keys.PrivateKey
nc *notifications.Controller
obj layer.Client
api api.Handler
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servers []Server
metrics *metrics.AppMetrics
bucketResolver *resolver.BucketResolver
services []*Service
settings *appSettings
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webDone chan struct{}
wrkDone chan struct{}
}
appSettings struct {
logLevel zap.AtomicLevel
policies *placementPolicy
xmlDecoder *xml.DecoderProvider
maxClient maxClientsConfig
bypassContentEncodingInChunks atomic.Bool
clientCut atomic.Bool
}
maxClientsConfig struct {
deadline time.Duration
count int
}
Logger struct {
logger *zap.Logger
lvl zap.AtomicLevel
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}
placementPolicy struct {
mu sync.RWMutex
defaultPolicy netmap.PlacementPolicy
regionMap map[string]netmap.PlacementPolicy
copiesNumbers map[string][]uint32
defaultCopiesNumbers []uint32
}
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)
func newApp(ctx context.Context, log *Logger, v *viper.Viper) *App {
objPool, treePool, key := getPools(ctx, log.logger, v)
// prepare auth center
ctr := auth.New(frostfs.NewAuthmateFrostFS(objPool, key), key, v.GetStringSlice(cfgAllowedAccessKeyIDPrefixes), getAccessBoxCacheConfig(v, log.logger))
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app := &App{
ctr: ctr,
log: log.logger,
cfg: v,
pool: objPool,
treePool: treePool,
key: key,
webDone: make(chan struct{}, 1),
wrkDone: make(chan struct{}, 1),
settings: newAppSettings(log, v),
}
app.init(ctx)
return app
}
func (a *App) init(ctx context.Context) {
a.setRuntimeParameters()
a.initAPI(ctx)
a.initMetrics()
a.initServers(ctx)
a.initTracing(ctx)
}
func (a *App) initLayer(ctx context.Context) {
a.initResolver()
// prepare random key for anonymous requests
randomKey, err := keys.NewPrivateKey()
if err != nil {
a.log.Fatal(logs.CouldntGenerateRandomKey, zap.Error(err))
}
var gateOwner user.ID
user.IDFromKey(&gateOwner, a.key.PrivateKey.PublicKey)
layerCfg := &layer.Config{
Caches: getCacheOptions(a.cfg, a.log),
AnonKey: layer.AnonymousKey{
Key: randomKey,
},
GateOwner: gateOwner,
Resolver: a.bucketResolver,
TreeService: tree.NewTree(services.NewPoolWrapper(a.treePool), a.log),
Features: a.settings,
}
// prepare object layer
a.obj = layer.NewLayer(a.log, frostfs.NewFrostFS(a.pool, a.key), layerCfg)
if a.cfg.GetBool(cfgEnableNATS) {
nopts := getNotificationsOptions(a.cfg, a.log)
a.nc, err = notifications.NewController(nopts, a.log)
if err != nil {
a.log.Fatal(logs.FailedToEnableNotifications, zap.Error(err))
}
if err = a.obj.Initialize(ctx, a.nc); err != nil {
a.log.Fatal(logs.CouldntInitializeLayer, zap.Error(err))
}
}
}
func newAppSettings(log *Logger, v *viper.Viper) *appSettings {
settings := &appSettings{
logLevel: log.lvl,
policies: newPlacementPolicy(log.logger, v),
xmlDecoder: xml.NewDecoderProvider(v.GetBool(cfgKludgeUseDefaultXMLNSForCompleteMultipartUpload)),
maxClient: newMaxClients(v),
}
settings.setBypassContentEncodingInChunks(v.GetBool(cfgKludgeBypassContentEncodingCheckInChunks))
settings.setClientCut(v.GetBool(cfgClientCut))
return settings
}
func (s *appSettings) BypassContentEncodingInChunks() bool {
return s.bypassContentEncodingInChunks.Load()
}
func (s *appSettings) setBypassContentEncodingInChunks(bypass bool) {
s.bypassContentEncodingInChunks.Store(bypass)
}
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func (s *appSettings) ClientCut() bool {
return s.clientCut.Load()
}
func (s *appSettings) setClientCut(clientCut bool) {
s.clientCut.Store(clientCut)
}
func (a *App) initAPI(ctx context.Context) {
a.initLayer(ctx)
a.initHandler()
}
func (a *App) initMetrics() {
a.metrics = metrics.NewAppMetrics(a.log, frostfs.NewPoolStatistic(a.pool), a.cfg.GetBool(cfgPrometheusEnabled))
a.metrics.State().SetHealth(metrics.HealthStatusStarting)
}
func (a *App) initResolver() {
var err error
a.bucketResolver, err = resolver.NewBucketResolver(a.getResolverConfig())
if err != nil {
a.log.Fatal(logs.FailedToCreateResolver, zap.Error(err))
}
}
func (a *App) getResolverConfig() ([]string, *resolver.Config) {
resolveCfg := &resolver.Config{
FrostFS: frostfs.NewResolverFrostFS(a.pool),
RPCAddress: a.cfg.GetString(cfgRPCEndpoint),
}
order := a.cfg.GetStringSlice(cfgResolveOrder)
if resolveCfg.RPCAddress == "" {
order = remove(order, resolver.NNSResolver)
a.log.Warn(logs.ResolverNNSWontBeUsedSinceRPCEndpointIsntProvided)
}
if len(order) == 0 {
a.log.Info(logs.ContainerResolverWillBeDisabled)
}
return order, resolveCfg
}
func (a *App) initTracing(ctx context.Context) {
instanceID := ""
if len(a.servers) > 0 {
instanceID = a.servers[0].Address()
}
cfg := tracing.Config{
Enabled: a.cfg.GetBool(cfgTracingEnabled),
Exporter: tracing.Exporter(a.cfg.GetString(cfgTracingExporter)),
Endpoint: a.cfg.GetString(cfgTracingEndpoint),
Service: "frostfs-s3-gw",
InstanceID: instanceID,
Version: version.Version,
}
updated, err := tracing.Setup(ctx, cfg)
if err != nil {
a.log.Warn(logs.FailedToInitializeTracing, zap.Error(err))
}
if updated {
a.log.Info(logs.TracingConfigUpdated)
}
}
func (a *App) shutdownTracing() {
const tracingShutdownTimeout = 5 * time.Second
shdnCtx, cancel := context.WithTimeout(context.Background(), tracingShutdownTimeout)
defer cancel()
if err := tracing.Shutdown(shdnCtx); err != nil {
a.log.Warn(logs.FailedToShutdownTracing, zap.Error(err))
}
}
func newMaxClients(cfg *viper.Viper) maxClientsConfig {
config := maxClientsConfig{}
config.count = fetchMaxClientsCount(cfg)
config.deadline = fetchMaxClientsDeadline(cfg)
return config
}
func getPools(ctx context.Context, logger *zap.Logger, cfg *viper.Viper) (*pool.Pool, *treepool.Pool, *keys.PrivateKey) {
var prm pool.InitParameters
var prmTree treepool.InitParameters
password := wallet.GetPassword(cfg, cfgWalletPassphrase)
key, err := wallet.GetKeyFromPath(cfg.GetString(cfgWalletPath), cfg.GetString(cfgWalletAddress), password)
if err != nil {
logger.Fatal(logs.CouldNotLoadFrostFSPrivateKey, zap.Error(err))
}
prm.SetKey(&key.PrivateKey)
prmTree.SetKey(key)
logger.Info(logs.UsingCredentials, zap.String("FrostFS", hex.EncodeToString(key.PublicKey().Bytes())))
for _, peer := range fetchPeers(logger, cfg) {
prm.AddNode(peer)
prmTree.AddNode(peer)
}
connTimeout := fetchConnectTimeout(cfg)
prm.SetNodeDialTimeout(connTimeout)
prmTree.SetNodeDialTimeout(connTimeout)
streamTimeout := fetchStreamTimeout(cfg)
prm.SetNodeStreamTimeout(streamTimeout)
prmTree.SetNodeStreamTimeout(streamTimeout)
healthCheckTimeout := fetchHealthCheckTimeout(cfg)
prm.SetHealthcheckTimeout(healthCheckTimeout)
prmTree.SetHealthcheckTimeout(healthCheckTimeout)
rebalanceInterval := fetchRebalanceInterval(cfg)
prm.SetClientRebalanceInterval(rebalanceInterval)
prmTree.SetClientRebalanceInterval(rebalanceInterval)
errorThreshold := fetchErrorThreshold(cfg)
prm.SetErrorThreshold(errorThreshold)
prm.SetLogger(logger)
prmTree.SetLogger(logger)
var apiGRPCDialOpts []grpc.DialOption
var treeGRPCDialOpts []grpc.DialOption
if cfg.GetBool(cfgTracingEnabled) {
interceptors := []grpc.DialOption{
grpc.WithUnaryInterceptor(grpctracing.NewUnaryClientInteceptor()),
grpc.WithStreamInterceptor(grpctracing.NewStreamClientInterceptor()),
}
treeGRPCDialOpts = append(treeGRPCDialOpts, interceptors...)
apiGRPCDialOpts = append(apiGRPCDialOpts, interceptors...)
}
prm.SetGRPCDialOptions(apiGRPCDialOpts...)
prmTree.SetGRPCDialOptions(treeGRPCDialOpts...)
p, err := pool.NewPool(prm)
if err != nil {
logger.Fatal(logs.FailedToCreateConnectionPool, zap.Error(err))
}
if err = p.Dial(ctx); err != nil {
logger.Fatal(logs.FailedToDialConnectionPool, zap.Error(err))
}
treePool, err := treepool.NewPool(prmTree)
if err != nil {
logger.Fatal(logs.FailedToCreateTreePool, zap.Error(err))
}
if err = treePool.Dial(ctx); err != nil {
logger.Fatal(logs.FailedToDialTreePool, zap.Error(err))
}
return p, treePool, key
}
func newPlacementPolicy(l *zap.Logger, v *viper.Viper) *placementPolicy {
var policies placementPolicy
policies.update(l, v)
return &policies
}
func (p *placementPolicy) DefaultPlacementPolicy() netmap.PlacementPolicy {
p.mu.RLock()
defer p.mu.RUnlock()
return p.defaultPolicy
}
func (p *placementPolicy) PlacementPolicy(name string) (netmap.PlacementPolicy, bool) {
p.mu.RLock()
policy, ok := p.regionMap[name]
p.mu.RUnlock()
return policy, ok
}
func (p *placementPolicy) CopiesNumbers(locationConstraint string) ([]uint32, bool) {
p.mu.RLock()
copiesNumbers, ok := p.copiesNumbers[locationConstraint]
p.mu.RUnlock()
return copiesNumbers, ok
}
func (p *placementPolicy) DefaultCopiesNumbers() []uint32 {
p.mu.RLock()
defer p.mu.RUnlock()
return p.defaultCopiesNumbers
}
func (p *placementPolicy) update(l *zap.Logger, v *viper.Viper) {
defaultPolicy := fetchDefaultPolicy(l, v)
regionMap := fetchRegionMappingPolicies(l, v)
defaultCopies := fetchDefaultCopiesNumbers(l, v)
copiesNumbers := fetchCopiesNumbers(l, v)
p.mu.Lock()
defer p.mu.Unlock()
p.defaultPolicy = defaultPolicy
p.regionMap = regionMap
p.defaultCopiesNumbers = defaultCopies
p.copiesNumbers = copiesNumbers
}
func remove(list []string, element string) []string {
for i, item := range list {
if item == element {
return append(list[:i], list[i+1:]...)
}
}
return list
}
// Wait waits for an application to finish.
//
// Pre-logs a message about the launch of the application mentioning its
// version (version.Version) and its name (frostfs-s3-gw). At the end, it writes
// about the stop to the log.
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func (a *App) Wait() {
a.log.Info(logs.ApplicationStarted,
zap.String("name", "frostfs-s3-gw"),
zap.String("version", version.Version),
)
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a.metrics.State().SetVersion(version.Version)
a.setHealthStatus()
<-a.webDone // wait for web-server to be stopped
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a.log.Info(logs.ApplicationFinished)
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}
func (a *App) setHealthStatus() {
a.metrics.State().SetHealth(metrics.HealthStatusReady)
}
// Serve runs HTTP server to handle S3 API requests.
func (a *App) Serve(ctx context.Context) {
// Attach S3 API:
domains := a.cfg.GetStringSlice(cfgListenDomains)
a.log.Info(logs.FetchDomainsPrepareToUseAPI, zap.Strings("domains", domains))
throttleOps := middleware.ThrottleOpts{
Limit: a.settings.maxClient.count,
BacklogTimeout: a.settings.maxClient.deadline,
}
chiRouter := chi.NewRouter()
api.AttachChi(chiRouter, domains, throttleOps, a.api, a.ctr, a.log, a.metrics)
// Use mux.Router as http.Handler
srv := new(http.Server)
srv.Handler = chiRouter
srv.ErrorLog = zap.NewStdLog(a.log)
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a.startServices()
for i := range a.servers {
go func(i int) {
a.log.Info(logs.StartingServer, zap.String("address", a.servers[i].Address()))
if err := srv.Serve(a.servers[i].Listener()); err != nil && err != http.ErrServerClosed {
a.log.Fatal(logs.ListenAndServe, zap.Error(err))
}
}(i)
}
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sigs := make(chan os.Signal, 1)
signal.Notify(sigs, syscall.SIGHUP)
LOOP:
for {
select {
case <-ctx.Done():
break LOOP
case <-sigs:
a.configReload(ctx)
}
}
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ctx, cancel := shutdownContext()
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defer cancel()
a.log.Info(logs.StoppingServer, zap.Error(srv.Shutdown(ctx)))
a.metrics.Shutdown()
a.stopServices()
a.shutdownTracing()
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close(a.webDone)
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}
func shutdownContext() (context.Context, context.CancelFunc) {
return context.WithTimeout(context.Background(), defaultShutdownTimeout)
}
func (a *App) configReload(ctx context.Context) {
a.log.Info(logs.SIGHUPConfigReloadStarted)
if !a.cfg.IsSet(cmdConfig) && !a.cfg.IsSet(cmdConfigDir) {
a.log.Warn(logs.FailedToReloadConfigBecauseItsMissed)
return
}
if err := readInConfig(a.cfg); err != nil {
a.log.Warn(logs.FailedToReloadConfig, zap.Error(err))
return
}
if err := a.bucketResolver.UpdateResolvers(a.getResolverConfig()); err != nil {
a.log.Warn(logs.FailedToReloadResolvers, zap.Error(err))
}
if err := a.updateServers(); err != nil {
a.log.Warn(logs.FailedToReloadServerParameters, zap.Error(err))
}
a.setRuntimeParameters()
a.stopServices()
a.startServices()
a.updateSettings()
a.metrics.SetEnabled(a.cfg.GetBool(cfgPrometheusEnabled))
a.initTracing(ctx)
a.setHealthStatus()
a.log.Info(logs.SIGHUPConfigReloadCompleted)
}
func (a *App) updateSettings() {
if lvl, err := getLogLevel(a.cfg); err != nil {
a.log.Warn(logs.LogLevelWontBeUpdated, zap.Error(err))
} else {
a.settings.logLevel.SetLevel(lvl)
}
a.settings.policies.update(a.log, a.cfg)
a.settings.xmlDecoder.UseDefaultNamespaceForCompleteMultipart(a.cfg.GetBool(cfgKludgeUseDefaultXMLNSForCompleteMultipartUpload))
a.settings.setBypassContentEncodingInChunks(a.cfg.GetBool(cfgKludgeBypassContentEncodingCheckInChunks))
a.settings.setClientCut(a.cfg.GetBool(cfgClientCut))
}
func (a *App) startServices() {
a.services = a.services[:0]
pprofService := NewPprofService(a.cfg, a.log)
a.services = append(a.services, pprofService)
go pprofService.Start()
prometheusService := NewPrometheusService(a.cfg, a.log, a.metrics.Handler())
a.services = append(a.services, prometheusService)
go prometheusService.Start()
}
func (a *App) initServers(ctx context.Context) {
serversInfo := fetchServers(a.cfg)
a.servers = make([]Server, 0, len(serversInfo))
for _, serverInfo := range serversInfo {
fields := []zap.Field{
zap.String("address", serverInfo.Address), zap.Bool("tls enabled", serverInfo.TLS.Enabled),
zap.String("tls cert", serverInfo.TLS.CertFile), zap.String("tls key", serverInfo.TLS.KeyFile),
}
srv, err := newServer(ctx, serverInfo)
if err != nil {
a.log.Warn(logs.FailedToAddServer, append(fields, zap.Error(err))...)
continue
}
a.servers = append(a.servers, srv)
a.log.Info(logs.AddServer, fields...)
}
if len(a.servers) == 0 {
a.log.Fatal(logs.NoHealthyServers)
}
}
func (a *App) updateServers() error {
serversInfo := fetchServers(a.cfg)
var found bool
for _, serverInfo := range serversInfo {
index := a.serverIndex(serverInfo.Address)
if index == -1 {
continue
}
if serverInfo.TLS.Enabled {
if err := a.servers[index].UpdateCert(serverInfo.TLS.CertFile, serverInfo.TLS.KeyFile); err != nil {
return fmt.Errorf("failed to update tls certs: %w", err)
}
}
found = true
}
if !found {
return fmt.Errorf("invalid servers configuration: no known server found")
}
return nil
}
func (a *App) serverIndex(address string) int {
for i := range a.servers {
if a.servers[i].Address() == address {
return i
}
}
return -1
}
func (a *App) stopServices() {
ctx, cancel := shutdownContext()
defer cancel()
for _, svc := range a.services {
svc.ShutDown(ctx)
}
}
func getNotificationsOptions(v *viper.Viper, l *zap.Logger) *notifications.Options {
cfg := notifications.Options{}
cfg.URL = v.GetString(cfgNATSEndpoint)
cfg.Timeout = fetchNATSTimeout(v, l)
cfg.TLSCertFilepath = v.GetString(cfgNATSTLSCertFile)
cfg.TLSAuthPrivateKeyFilePath = v.GetString(cfgNATSAuthPrivateKeyFile)
cfg.RootCAFiles = v.GetStringSlice(cfgNATSRootCAFiles)
return &cfg
}
func getCacheOptions(v *viper.Viper, l *zap.Logger) *layer.CachesConfig {
cacheCfg := layer.DefaultCachesConfigs(l)
cacheCfg.Objects.Lifetime = fetchCacheLifetime(v, l, cfgObjectsCacheLifetime, cacheCfg.Objects.Lifetime)
cacheCfg.Objects.Size = fetchCacheSize(v, l, cfgObjectsCacheSize, cacheCfg.Objects.Size)
cacheCfg.ObjectsList.Lifetime = fetchCacheLifetime(v, l, cfgListObjectsCacheLifetime, cacheCfg.ObjectsList.Lifetime)
cacheCfg.ObjectsList.Size = fetchCacheSize(v, l, cfgListObjectsCacheSize, cacheCfg.ObjectsList.Size)
cacheCfg.Buckets.Lifetime = fetchCacheLifetime(v, l, cfgBucketsCacheLifetime, cacheCfg.Buckets.Lifetime)
cacheCfg.Buckets.Size = fetchCacheSize(v, l, cfgBucketsCacheSize, cacheCfg.Buckets.Size)
cacheCfg.Names.Lifetime = fetchCacheLifetime(v, l, cfgNamesCacheLifetime, cacheCfg.Names.Lifetime)
cacheCfg.Names.Size = fetchCacheSize(v, l, cfgNamesCacheSize, cacheCfg.Names.Size)
cacheCfg.System.Lifetime = fetchCacheLifetime(v, l, cfgSystemCacheLifetime, cacheCfg.System.Lifetime)
cacheCfg.System.Size = fetchCacheSize(v, l, cfgSystemCacheSize, cacheCfg.System.Size)
cacheCfg.AccessControl.Lifetime = fetchCacheLifetime(v, l, cfgAccessControlCacheLifetime, cacheCfg.AccessControl.Lifetime)
cacheCfg.AccessControl.Size = fetchCacheSize(v, l, cfgAccessControlCacheSize, cacheCfg.AccessControl.Size)
return cacheCfg
}
func getAccessBoxCacheConfig(v *viper.Viper, l *zap.Logger) *cache.Config {
cacheCfg := cache.DefaultAccessBoxConfig(l)
cacheCfg.Lifetime = fetchCacheLifetime(v, l, cfgAccessBoxCacheLifetime, cacheCfg.Lifetime)
cacheCfg.Size = fetchCacheSize(v, l, cfgAccessBoxCacheSize, cacheCfg.Size)
return cacheCfg
}
func (a *App) initHandler() {
cfg := &handler.Config{
Policy: a.settings.policies,
DefaultMaxAge: fetchDefaultMaxAge(a.cfg, a.log),
NotificatorEnabled: a.cfg.GetBool(cfgEnableNATS),
XMLDecoder: a.settings.xmlDecoder,
}
cfg.ResolveZoneList = a.cfg.GetStringSlice(cfgResolveBucketAllow)
cfg.IsResolveListAllow = len(cfg.ResolveZoneList) > 0
if !cfg.IsResolveListAllow {
cfg.ResolveZoneList = a.cfg.GetStringSlice(cfgResolveBucketDeny)
}
cfg.CompleteMultipartKeepalive = a.cfg.GetDuration(cfgKludgeCompleteMultipartUploadKeepalive)
cfg.Kludge = a.settings
var err error
a.api, err = handler.New(a.log, a.obj, a.nc, cfg)
if err != nil {
a.log.Fatal(logs.CouldNotInitializeAPIHandler, zap.Error(err))
}
}
func (a *App) setRuntimeParameters() {
if len(os.Getenv("GOMEMLIMIT")) != 0 {
// default limit < yaml limit < app env limit < GOMEMLIMIT
a.log.Warn(logs.RuntimeSoftMemoryDefinedWithGOMEMLIMIT)
return
}
softMemoryLimit := fetchSoftMemoryLimit(a.cfg)
previous := debug.SetMemoryLimit(softMemoryLimit)
if softMemoryLimit != previous {
a.log.Info(logs.RuntimeSoftMemoryLimitUpdated,
zap.Int64("new_value", softMemoryLimit),
zap.Int64("old_value", previous))
}
}