frostfs-http-gw/app.go

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package main
import (
"context"
"crypto/ecdsa"
"fmt"
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"strconv"
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"github.com/fasthttp/router"
"github.com/nspcc-dev/neo-go/cli/flags"
"github.com/nspcc-dev/neo-go/cli/input"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/wallet"
"github.com/nspcc-dev/neofs-http-gw/downloader"
"github.com/nspcc-dev/neofs-http-gw/metrics"
"github.com/nspcc-dev/neofs-http-gw/resolver"
"github.com/nspcc-dev/neofs-http-gw/response"
"github.com/nspcc-dev/neofs-http-gw/uploader"
"github.com/nspcc-dev/neofs-http-gw/utils"
"github.com/nspcc-dev/neofs-sdk-go/pool"
"github.com/nspcc-dev/neofs-sdk-go/user"
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"github.com/spf13/viper"
"github.com/valyala/fasthttp"
"go.uber.org/zap"
)
type (
app struct {
log *zap.Logger
pool *pool.Pool
owner *user.ID
cfg *viper.Viper
webServer *fasthttp.Server
webDone chan struct{}
resolver *resolver.ContainerResolver
metrics GateMetricsProvider
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}
// App is an interface for the main gateway function.
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App interface {
Wait()
Serve(context.Context)
}
// Option is an application option.
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Option func(a *app)
GateMetricsProvider interface {
SetHealth(int32)
}
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)
// WithLogger returns Option to set a specific logger.
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func WithLogger(l *zap.Logger) Option {
return func(a *app) {
if l == nil {
return
}
a.log = l
}
}
// WithConfig returns Option to use specific Viper configuration.
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func WithConfig(c *viper.Viper) Option {
return func(a *app) {
if c == nil {
return
}
a.cfg = c
}
}
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func newApp(ctx context.Context, opt ...Option) App {
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var (
key *ecdsa.PrivateKey
err error
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)
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a := &app{
log: zap.L(),
cfg: viper.GetViper(),
webServer: new(fasthttp.Server),
webDone: make(chan struct{}),
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}
for i := range opt {
opt[i](a)
}
// -- setup FastHTTP server --
a.webServer.Name = "neofs-http-gw"
a.webServer.ReadBufferSize = a.cfg.GetInt(cfgWebReadBufferSize)
a.webServer.WriteBufferSize = a.cfg.GetInt(cfgWebWriteBufferSize)
a.webServer.ReadTimeout = a.cfg.GetDuration(cfgWebReadTimeout)
a.webServer.WriteTimeout = a.cfg.GetDuration(cfgWebWriteTimeout)
a.webServer.DisableHeaderNamesNormalizing = true
a.webServer.NoDefaultServerHeader = true
a.webServer.NoDefaultContentType = true
a.webServer.MaxRequestBodySize = a.cfg.GetInt(cfgWebMaxRequestBodySize)
a.webServer.DisablePreParseMultipartForm = true
a.webServer.StreamRequestBody = a.cfg.GetBool(cfgWebStreamRequestBody)
// -- -- -- -- -- -- -- -- -- -- -- -- -- --
key, err = getNeoFSKey(a)
if err != nil {
a.log.Fatal("failed to get neofs credentials", zap.Error(err))
}
var owner user.ID
user.IDFromKey(&owner, key.PublicKey)
a.owner = &owner
var prm pool.InitParameters
prm.SetKey(key)
prm.SetNodeDialTimeout(a.cfg.GetDuration(cfgConTimeout))
prm.SetHealthcheckTimeout(a.cfg.GetDuration(cfgReqTimeout))
prm.SetClientRebalanceInterval(a.cfg.GetDuration(cfgRebalance))
prm.SetErrorThreshold(a.cfg.GetUint32(cfgPoolErrorThreshold))
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for i := 0; ; i++ {
address := a.cfg.GetString(cfgPeers + "." + strconv.Itoa(i) + ".address")
weight := a.cfg.GetFloat64(cfgPeers + "." + strconv.Itoa(i) + ".weight")
priority := a.cfg.GetInt(cfgPeers + "." + strconv.Itoa(i) + ".priority")
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if address == "" {
break
}
if weight <= 0 { // unspecified or wrong
weight = 1
}
if priority <= 0 { // unspecified or wrong
priority = 1
}
prm.AddNode(pool.NewNodeParam(priority, address, weight))
a.log.Info("add connection", zap.String("address", address),
zap.Float64("weight", weight), zap.Int("priority", priority))
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}
a.pool, err = pool.NewPool(prm)
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if err != nil {
a.log.Fatal("failed to create connection pool", zap.Error(err))
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}
err = a.pool.Dial(ctx)
if err != nil {
a.log.Fatal("failed to dial pool", zap.Error(err))
}
resolveCfg := &resolver.Config{
NeoFS: resolver.NewNeoFSResolver(a.pool),
RPCAddress: a.cfg.GetString(cfgRPCEndpoint),
}
order := a.cfg.GetStringSlice(cfgResolveOrder)
if resolveCfg.RPCAddress == "" {
order = remove(order, resolver.NNSResolver)
a.log.Warn(fmt.Sprintf("resolver '%s' won't be used since '%s' isn't provided", resolver.NNSResolver, cfgRPCEndpoint))
}
if len(order) != 0 {
a.resolver, err = resolver.NewResolver(order, resolveCfg)
if err != nil {
a.log.Fatal("failed to create resolver", zap.Error(err))
}
} else {
a.log.Info("container resolver is disabled")
}
if a.cfg.GetBool(cfgPrometheusEnabled) {
a.metrics = metrics.NewGateMetrics()
}
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return a
}
func remove(list []string, element string) []string {
for i, item := range list {
if item == element {
return append(list[:i], list[i+1:]...)
}
}
return list
}
func getNeoFSKey(a *app) (*ecdsa.PrivateKey, error) {
walletPath := a.cfg.GetString(cmdWallet)
if len(walletPath) == 0 {
walletPath = a.cfg.GetString(cfgWalletPath)
}
if len(walletPath) == 0 {
a.log.Info("no wallet path specified, creating ephemeral key automatically for this run")
key, err := keys.NewPrivateKey()
if err != nil {
return nil, err
}
return &key.PrivateKey, nil
}
w, err := wallet.NewWalletFromFile(walletPath)
if err != nil {
return nil, err
}
var password *string
if a.cfg.IsSet(cfgWalletPassphrase) {
pwd := a.cfg.GetString(cfgWalletPassphrase)
password = &pwd
}
address := a.cfg.GetString(cmdAddress)
if len(address) == 0 {
address = a.cfg.GetString(cfgWalletAddress)
}
return getKeyFromWallet(w, address, password)
}
func getKeyFromWallet(w *wallet.Wallet, addrStr string, password *string) (*ecdsa.PrivateKey, error) {
var addr util.Uint160
var err error
if addrStr == "" {
addr = w.GetChangeAddress()
} else {
addr, err = flags.ParseAddress(addrStr)
if err != nil {
return nil, fmt.Errorf("invalid address")
}
}
acc := w.GetAccount(addr)
if acc == nil {
return nil, fmt.Errorf("couldn't find wallet account for %s", addrStr)
}
if password == nil {
pwd, err := input.ReadPassword("Enter password > ")
if err != nil {
return nil, fmt.Errorf("couldn't read password")
}
password = &pwd
}
if err := acc.Decrypt(*password, w.Scrypt); err != nil {
return nil, fmt.Errorf("couldn't decrypt account: %w", err)
}
return &acc.PrivateKey().PrivateKey, nil
}
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func (a *app) Wait() {
a.log.Info("starting application", zap.String("app_name", "neofs-http-gw"), zap.String("version", Version))
if a.metrics != nil {
a.metrics.SetHealth(1)
}
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<-a.webDone // wait for web-server to be stopped
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}
func (a *app) Serve(ctx context.Context) {
edts := a.cfg.GetBool(cfgUploaderHeaderEnableDefaultTimestamp)
uploadRoutes := uploader.New(ctx, a.AppParams(), edts)
downloadSettings := downloader.Settings{ZipCompression: a.cfg.GetBool(cfgZipCompression)}
downloadRoutes := downloader.New(ctx, a.AppParams(), downloadSettings)
// Configure router.
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r := router.New()
r.RedirectTrailingSlash = true
r.NotFound = func(r *fasthttp.RequestCtx) {
response.Error(r, "Not found", fasthttp.StatusNotFound)
}
r.MethodNotAllowed = func(r *fasthttp.RequestCtx) {
response.Error(r, "Method Not Allowed", fasthttp.StatusMethodNotAllowed)
}
r.POST("/upload/{cid}", a.logger(uploadRoutes.Upload))
a.log.Info("added path /upload/{cid}")
r.GET("/get/{cid}/{oid}", a.logger(downloadRoutes.DownloadByAddress))
r.HEAD("/get/{cid}/{oid}", a.logger(downloadRoutes.HeadByAddress))
a.log.Info("added path /get/{cid}/{oid}")
r.GET("/get_by_attribute/{cid}/{attr_key}/{attr_val:*}", a.logger(downloadRoutes.DownloadByAttribute))
r.HEAD("/get_by_attribute/{cid}/{attr_key}/{attr_val:*}", a.logger(downloadRoutes.HeadByAttribute))
a.log.Info("added path /get_by_attribute/{cid}/{attr_key}/{attr_val:*}")
r.GET("/zip/{cid}/{prefix:*}", a.logger(downloadRoutes.DownloadZipped))
a.log.Info("added path /zip/{cid}/{prefix}")
pprofConfig := metrics.Config{Enabled: a.cfg.GetBool(cfgPprofEnabled), Address: a.cfg.GetString(cfgPprofAddress)}
pprof := metrics.NewPprofService(a.log, pprofConfig)
prometheusConfig := metrics.Config{Enabled: a.cfg.GetBool(cfgPrometheusEnabled), Address: a.cfg.GetString(cfgPrometheusAddress)}
prometheus := metrics.NewPrometheusService(a.log, prometheusConfig)
bind := a.cfg.GetString(cfgListenAddress)
tlsCertPath := a.cfg.GetString(cfgTLSCertificate)
tlsKeyPath := a.cfg.GetString(cfgTLSKey)
a.webServer.Handler = r.Handler
go pprof.Start()
go prometheus.Start()
go func() {
var err error
if tlsCertPath == "" && tlsKeyPath == "" {
a.log.Info("running web server", zap.String("address", bind))
err = a.webServer.ListenAndServe(bind)
} else {
a.log.Info("running web server (TLS-enabled)", zap.String("address", bind))
err = a.webServer.ListenAndServeTLS(bind, tlsCertPath, tlsKeyPath)
}
if err != nil {
a.log.Fatal("could not start server", zap.Error(err))
}
}()
<-ctx.Done()
a.log.Info("shutting down web server", zap.Error(a.webServer.Shutdown()))
ctx, cancel := context.WithTimeout(context.Background(), defaultShutdownTimeout)
defer cancel()
pprof.ShutDown(ctx)
prometheus.ShutDown(ctx)
close(a.webDone)
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}
func (a *app) logger(h fasthttp.RequestHandler) fasthttp.RequestHandler {
return fasthttp.RequestHandler(func(ctx *fasthttp.RequestCtx) {
a.log.Info("request", zap.String("remote", ctx.RemoteAddr().String()),
zap.ByteString("method", ctx.Method()),
zap.ByteString("path", ctx.Path()),
zap.ByteString("query", ctx.QueryArgs().QueryString()),
zap.Uint64("id", ctx.ID()))
h(ctx)
})
}
func (a *app) AppParams() *utils.AppParams {
return &utils.AppParams{
Logger: a.log,
Pool: a.pool,
Owner: a.owner,
Resolver: a.resolver,
}
}