From b4ac08d341e5e9c298433fd4cb2802ffb338bdea Mon Sep 17 00:00:00 2001 From: Evgeniy Kulikov Date: Wed, 6 Nov 2019 15:33:46 +0300 Subject: [PATCH] initial --- .gitignore | 8 ++ Dockerfile | 23 +++++ Makefile | 29 ++++++ go.mod | 20 +++++ go.sum | 260 +++++++++++++++++++++++++++++++++++++++++++++++++++++ grace.go | 24 +++++ logger.go | 89 ++++++++++++++++++ main.go | 260 +++++++++++++++++++++++++++++++++++++++++++++++++++++ misc.go | 10 +++ 9 files changed, 723 insertions(+) create mode 100644 .gitignore create mode 100644 Dockerfile create mode 100644 Makefile create mode 100644 go.mod create mode 100644 go.sum create mode 100644 grace.go create mode 100644 logger.go create mode 100644 main.go create mode 100644 misc.go diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..690f5d9 --- /dev/null +++ b/.gitignore @@ -0,0 +1,8 @@ +bin +temp +cmd/test +/plugins/ +/vendor/ + +testfile +.neofs-cli.yml diff --git a/Dockerfile b/Dockerfile new file mode 100644 index 0000000..9e28b96 --- /dev/null +++ b/Dockerfile @@ -0,0 +1,23 @@ +FROM golang:1-alpine as builder + +ARG BUILD=now +ARG VERSION=dev +ARG REPO=github.com/nspcc-dev/neofs-gw + +ENV GOGC off +ENV CGO_ENABLED 0 +ENV LDFLAGS "-w -s -X ${REPO}/Version=${VERSION} -X ${REPO}/Build=${BUILD}" + +WORKDIR /src + +COPY . /src + +RUN go build -v -mod=vendor -ldflags "${LDFLAGS}" -o /go/bin/neofs-gw ./ + +# Executable image +FROM scratch + +WORKDIR / + +COPY --from=builder /go/bin/neofs-gw /bin/neofs-gw +COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..8729d78 --- /dev/null +++ b/Makefile @@ -0,0 +1,29 @@ +REPO ?= $(shell go list -m) +VERSION ?= "$(shell git describe --tags 2>/dev/null | sed 's/^v//')" + +HUB_IMAGE=nspccdev/neofs + +B=\033[0;1m +G=\033[0;92m +R=\033[0m + +# Show current version +version: + @echo $(VERSION) + +# Make sure that all files added to commit +vendor: + @printf "${B}${G}⇒ Ensure vendor${R}: " + @GOPRIVATE=bitbucket.org/nspcc-dev go mod tidy -v && echo OK || (echo fail && exit 2) + @printf "${B}${G}⇒ Download requirements${R}: " + @GOPRIVATE=bitbucket.org/nspcc-dev go mod download && echo OK || (echo fail && exit 2) + @printf "${B}${G}⇒ Store vendor localy${R}: " + @GOPRIVATE=bitbucket.org/nspcc-dev go mod vendor && echo OK || (echo fail && exit 2) + +image: vendor + @echo "${B}${G}⇒ Build GW docker-image ${R}" + @docker build \ + --build-arg REPO=$(REPO) \ + --build-arg VERSION=$(VERSION) \ + -f Dockerfile \ + -t $(HUB_IMAGE)-http-gate:$(VERSION) . diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..12b0157 --- /dev/null +++ b/go.mod @@ -0,0 +1,20 @@ +module github.com/nspcc-dev/neofs-gw + +go 1.13 + +require ( + github.com/labstack/echo/v4 v4.1.11 + github.com/nspcc-dev/hrw v1.0.9 // indirect + github.com/nspcc-dev/neofs-proto v0.0.0-20191101093315-0d5a92f60568 + github.com/pkg/errors v0.8.1 + github.com/spf13/pflag v1.0.5 // indirect + github.com/spf13/viper v1.5.0 + go.uber.org/zap v1.11.0 + golang.org/x/text v0.3.2 // indirect + google.golang.org/grpc v1.24.0 + gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect + +) + +// Temporary, before we move repo to github: +replace github.com/nspcc-dev/neofs-proto v0.0.0-20191101093315-0d5a92f60568 => bitbucket.org/nspcc-dev/neofs-proto v0.0.0-20191101093315-0d5a92f60568 diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..7d2e17d --- /dev/null +++ b/go.sum @@ -0,0 +1,260 @@ +bitbucket.org/nspcc-dev/neofs-proto v0.0.0-20191101093315-0d5a92f60568 h1:Uy8dzzGOqK0QPJauQI2HseW2XwUIDwUq52mJjyrQqb8= +bitbucket.org/nspcc-dev/neofs-proto v0.0.0-20191101093315-0d5a92f60568/go.mod h1:SfhT/MhBkpJVCVS+hK/APVwHKtiEAnN9bNxEFJ2kx+E= +cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +code.cloudfoundry.org/bytefmt v0.0.0-20190819182555-854d396b647c h1:2RuXx1+tSNWRjxhY0Bx52kjV2odJQ0a6MTbfTPhGAkg= +code.cloudfoundry.org/bytefmt 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h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= +honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= +honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= diff --git a/grace.go b/grace.go new file mode 100644 index 0000000..8469d62 --- /dev/null +++ b/grace.go @@ -0,0 +1,24 @@ +package main + +import ( + "context" + "os" + "os/signal" + "syscall" + + "go.uber.org/zap" +) + +// newGracefulContext returns graceful context +func newGracefulContext(l *zap.Logger) context.Context { + ctx, cancel := context.WithCancel(context.Background()) + go func() { + ch := make(chan os.Signal, 1) + signal.Notify(ch, syscall.SIGINT, syscall.SIGTERM, syscall.SIGHUP) + sig := <-ch + l.Info("received signal", + zap.String("signal", sig.String())) + cancel() + }() + return ctx +} diff --git a/logger.go b/logger.go new file mode 100644 index 0000000..07fa9b1 --- /dev/null +++ b/logger.go @@ -0,0 +1,89 @@ +package main + +import ( + "strings" + + "github.com/spf13/viper" + "go.uber.org/zap" + "go.uber.org/zap/zapcore" +) + +const ( + formatJSON = "json" + formatConsole = "console" + + defaultSamplingInitial = 100 + defaultSamplingThereafter = 100 +) + +func safeLevel(lvl string) zap.AtomicLevel { + switch strings.ToLower(lvl) { + case "debug": + return zap.NewAtomicLevelAt(zap.DebugLevel) + case "warn": + return zap.NewAtomicLevelAt(zap.WarnLevel) + case "error": + return zap.NewAtomicLevelAt(zap.ErrorLevel) + case "fatal": + return zap.NewAtomicLevelAt(zap.FatalLevel) + case "panic": + return zap.NewAtomicLevelAt(zap.PanicLevel) + default: + return zap.NewAtomicLevelAt(zap.InfoLevel) + } +} + +func newLogger(v *viper.Viper) (*zap.Logger, error) { + c := zap.NewProductionConfig() + + c.OutputPaths = []string{"stdout"} + c.ErrorOutputPaths = []string{"stdout"} + + if v.IsSet("logger.sampling") { + c.Sampling = &zap.SamplingConfig{ + Initial: defaultSamplingInitial, + Thereafter: defaultSamplingThereafter, + } + + if val := v.GetInt("logger.sampling.initial"); val > 0 { + c.Sampling.Initial = val + } + + if val := v.GetInt("logger.sampling.thereafter"); val > 0 { + c.Sampling.Thereafter = val + } + } + + // logger level + c.Level = safeLevel(v.GetString("logger.level")) + traceLvl := safeLevel(v.GetString("logger.trace_level")) + + // logger format + switch f := v.GetString("logger.format"); strings.ToLower(f) { + case formatConsole: + c.Encoding = formatConsole + default: + c.Encoding = formatJSON + } + + // logger time + c.EncoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder + + l, err := c.Build( + // enable trace only for current log-level + zap.AddStacktrace(traceLvl)) + if err != nil { + return nil, err + } + + if v.GetBool("logger.no_disclaimer") { + return l, nil + } + + name := v.GetString("app.name") + version := v.GetString("app.version") + + return l.With( + zap.String("app_name", name), + zap.String("app_version", version)), nil +} diff --git a/main.go b/main.go new file mode 100644 index 0000000..77c4dc3 --- /dev/null +++ b/main.go @@ -0,0 +1,260 @@ +package main + +import ( + "context" + "io" + "net/http" + "strconv" + "strings" + "time" + + "github.com/labstack/echo/v4" + "github.com/nspcc-dev/neofs-proto/object" + "github.com/nspcc-dev/neofs-proto/refs" + "github.com/nspcc-dev/neofs-proto/service" + "github.com/pkg/errors" + "github.com/spf13/viper" + "go.uber.org/zap" + "google.golang.org/grpc" + "google.golang.org/grpc/connectivity" + "google.golang.org/grpc/keepalive" +) + +type config struct { + log *zap.Logger + timeout time.Duration + cli object.ServiceClient +} + +var defaultConfig = strings.NewReader(` +request_timeout: 5s +connect_timeout: 30s +listen_address: :8082 +neofs_node_addr: :8080 + +logger: + level: debug + format: console + trace_level: fatal + no_disclaimer: true + sampling: + initial: 1000 + thereafter: 1000 + +keepalive: + time: 100ms + timeout: 10s + permit_without_stream: true +`) + +func main() { + v := viper.New() + v.AutomaticEnv() + v.SetEnvPrefix("GW") + v.SetConfigType("yaml") + v.SetEnvKeyReplacer(strings.NewReplacer(".", "_")) + + // set defaults: + v.Set("app.name", "neofs-gw") + v.Set("app.version", Version) + + if err := v.ReadConfig(defaultConfig); err != nil { + panic(err) + } + + log, err := newLogger(v) + if err != nil { + panic(err) + } + + log.Info("running application", zap.String("version", v.GetString("app.version"))) + + var ( + cfg = new(config) + grace = newGracefulContext(log) + ) + + cfg.log = log + cfg.timeout = v.GetDuration("request_timeout") + ctx, cancel := context.WithTimeout(grace, v.GetDuration("connect_timeout")) + defer cancel() + + conn, err := grpc.DialContext(ctx, v.GetString("neofs_node_addr"), + grpc.WithInsecure(), + grpc.WithKeepaliveParams(keepalive.ClientParameters{ + Time: v.GetDuration("keepalive.time"), + Timeout: v.GetDuration("keepalive.timeout"), + PermitWithoutStream: v.GetBool("keepalive.permit_without_stream"), + }), + ) + if err != nil { + log.Panic("could not connect to neofs-node", + zap.String("neofs-node", v.GetString("neofs_node_addr")), + zap.Error(err)) + } + + ctx, cancel = context.WithCancel(grace) + defer cancel() + + go checkConnection(ctx, conn, log) + cfg.cli = object.NewServiceClient(conn) + + e := echo.New() + e.Debug = false + e.HidePort = true + e.HideBanner = true + + e.GET("/:cid/:oid", cfg.receiveFile) + go func() { + log.Info("run gateway server", + zap.String("address", v.GetString("listen_address"))) + if err := e.Start(v.GetString("listen_address")); err != nil { + log.Panic("could not start server", zap.Error(err)) + } + }() + + <-ctx.Done() + + ctx, cancel = context.WithTimeout(context.TODO(), time.Second*30) + defer cancel() + + if err := e.Shutdown(ctx); err != nil { + log.Panic("could not stop server", zap.Error(err)) + } +} + +func checkConnection(ctx context.Context, conn *grpc.ClientConn, log *zap.Logger) { + tick := time.NewTicker(time.Second) +loop: + for { + select { + case <-ctx.Done(): + break loop + case <-tick.C: + switch state := conn.GetState(); state { + case connectivity.Idle, connectivity.Connecting, connectivity.Ready: + // It's ok.. + default: + log.Panic("could not establish connection", + zap.Stringer("state", state), + zap.Any("connection", conn.Target())) + } + } + } + + tick.Stop() +} + +func (cfg *config) receiveFile(c echo.Context) error { + var ( + cid refs.CID + oid refs.ObjectID + obj *object.Object + download = c.QueryParam("download") != "" + ) + + cfg.log.Debug("try to fetch object from network", + zap.String("cid", c.Param("cid")), + zap.String("oid", c.Param("oid"))) + + if err := cid.Parse(c.Param("cid")); err != nil { + cfg.log.Error("wrong container id", + zap.String("cid", c.Param("cid")), + zap.String("oid", c.Param("oid")), + zap.Error(err)) + + return echo.NewHTTPError( + http.StatusBadRequest, + errors.Wrap(err, "wrong container id").Error(), + ) + } else if err := oid.Parse(c.Param("oid")); err != nil { + cfg.log.Error("wrong object id", + zap.Stringer("cid", cid), + zap.String("oid", c.Param("oid")), + zap.Error(err)) + + return echo.NewHTTPError( + http.StatusBadRequest, + errors.Wrap(err, "wrong object id").Error(), + ) + } + + ctx, cancel := context.WithTimeout(context.Background(), cfg.timeout) + defer cancel() + + cli, err := cfg.cli.Get(ctx, &object.GetRequest{ + Address: refs.Address{ObjectID: oid, CID: cid}, + TTL: service.SingleForwardingTTL, + }) + + if err != nil { + cfg.log.Error("could not prepare connection", + zap.Stringer("cid", cid), + zap.Stringer("oid", oid), + zap.Error(err)) + + return echo.NewHTTPError( + // TODO: nginx doesn't return 500 errors from backend + // http.StatusInternalServerError, + http.StatusBadRequest, + errors.Wrap(err, "could not prepare connection").Error(), + ) + } else if obj, err = receiveObject(cli); err != nil { + cfg.log.Error("could not receive object", + zap.Stringer("cid", cid), + zap.Stringer("oid", oid), + zap.Error(err)) + + if strings.Contains(err.Error(), object.ErrNotFound.Error()) { + return echo.NewHTTPError(http.StatusNotFound, err.Error()) + } + + return echo.NewHTTPError( + // TODO: nginx doesn't return 500 errors from backend + // http.StatusInternalServerError, + http.StatusBadRequest, + errors.Wrap(err, "could not receive object").Error(), + ) + } + + cfg.log.Info("object fetched successfully", + zap.Stringer("cid", cid), + zap.Stringer("oid", oid)) + + c.Response().Header().Set("Content-Length", strconv.FormatUint(obj.SystemHeader.PayloadLength, 10)) + c.Response().Header().Set("x-object-id", obj.SystemHeader.ID.String()) + c.Response().Header().Set("x-owner-id", obj.SystemHeader.OwnerID.String()) + c.Response().Header().Set("x-container-id", obj.SystemHeader.CID.String()) + + for i := range obj.Headers { + if hdr := obj.Headers[i].GetUserHeader(); hdr != nil { + c.Response().Header().Set("x-"+hdr.Key, hdr.Value) + + if hdr.Key == DropInFilenameHeader && download { + c.Response().Header().Set("Content-Disposition", "attachment; filename="+hdr.Value) + } + } + } + + return c.Blob(http.StatusOK, + http.DetectContentType(obj.Payload), + obj.Payload) +} + +func receiveObject(cli object.Service_GetClient) (*object.Object, error) { + var obj *object.Object + for { + resp, err := cli.Recv() + if err != nil { + if err == io.EOF { + break + } + return nil, err + } else if obj == nil { + obj = resp.GetObject() + } + + obj.Payload = append(obj.Payload, resp.GetChunk()...) + } + return obj, nil +} diff --git a/misc.go b/misc.go new file mode 100644 index 0000000..48700df --- /dev/null +++ b/misc.go @@ -0,0 +1,10 @@ +package main + +const DropInFilenameHeader = "drop-in-filename" + +var ( + Prefix = "neofs" + Build = "now" + Version = "dev" + Debug = "true" +)