[#70] Support client cut

Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>

CHANGELOG.md

@@ -12,6 +12,7 @@ This document outlines major changes between releases.
 - Support impersonate bearer token (#40, #45)
 - Tracing support (#20, #44, #60)
 - Object name resolving with tree service (#30)
+- Add new `frostfs.client_cut` config param (#70)
 
 ### Changed
 - Update prometheus to v1.15.0 (#35)

cmd/http-gw/app.go

@@ -75,6 +75,7 @@ type (
 		mu               sync.RWMutex
 		defaultTimestamp bool
 		zipCompression   bool
+		clientCut        bool
 	}
 )
 
@@ -164,6 +165,18 @@ func (s *appSettings) setZipCompression(val bool) {
 	s.mu.Unlock()
 }
 
+func (s *appSettings) ClientCut() bool {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+	return s.clientCut
+}
+
+func (s *appSettings) setClientCut(val bool) {
+	s.mu.Lock()
+	s.clientCut = val
+	s.mu.Unlock()
+}
+
 func (a *app) initAppSettings() {
 	a.settings = &appSettings{}
 
@@ -448,6 +461,7 @@ func (a *app) configReload(ctx context.Context) {
 func (a *app) updateSettings() {
 	a.settings.setDefaultTimestamp(a.cfg.GetBool(cfgUploaderHeaderEnableDefaultTimestamp))
 	a.settings.setZipCompression(a.cfg.GetBool(cfgZipCompression))
+	a.settings.setClientCut(a.cfg.GetBool(cfgClientCut))
 }
 
 func (a *app) startServices() {

cmd/http-gw/settings.go

@@ -96,6 +96,9 @@ const (
 	// Runtime.
 	cfgSoftMemoryLimit = "runtime.soft_memory_limit"
 
+	// Enabling client side object preparing for PUT operations.
+	cfgClientCut = "frostfs.client_cut"
+
 	// Command line args.
 	cmdHelp          = "help"
 	cmdVersion       = "version"

config/config.env

@@ -98,3 +98,7 @@ HTTP_GW_TRACING_ENDPOINT="localhost:4317"
 HTTP_GW_TRACING_EXPORTER="otlp_grpc"
 
 HTTP_GW_RUNTIME_SOFT_MEMORY_LIMIT=1073741824
+
+# Parameters of requests to FrostFS
+# This flag enables client side object preparing.
+HTTP_GW_FROSTFS_CLIENT_CUT=false

config/config.yaml

@@ -104,3 +104,8 @@ zip:
 
 runtime:
   soft_memory_limit: 1gb
+
+# Parameters of requests to FrostFS
+frostfs:
+  # This flag enables client side object preparing.
+  client_cut: false

docs/gate-configuration.md

@@ -54,6 +54,7 @@ $ cat http.log
 | `prometheus`    | [Prometheus configuration](#prometheus-section)       |
 | `tracing`       | [Tracing configuration](#tracing-section)             |
 | `runtime`       | [Runtime configuration](#runtime-section)             |
+| `frostfs`       | [Frostfs configuration](#frostfs-section)             |
 
 
 # General section
@@ -269,3 +270,16 @@ runtime:
 | Parameter           | Type   | SIGHUP reload | Default value | Description                                                                                                                                                                  |
 |---------------------|--------|---------------|---------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
 | `soft_memory_limit` | `size` | yes           | maxint64      | Soft memory limit for the runtime. Zero or no value stands for no limit. If `GOMEMLIMIT` environment variable is set, the value from the configuration file will be ignored. |
+
+# `frostfs` section
+
+Contains parameters of requests to FrostFS.
+
+```yaml
+frostfs:
+  client_cut: false
+```
+
+| Parameter    | Type   | SIGHUP reload | Default value | Description                                     |
+|--------------|--------|---------------|---------------|-------------------------------------------------|
+| `client_cut` | `bool` | yes           | `false`       | This flag enables client side object preparing. |

internal/handler/handler.go

@@ -23,6 +23,7 @@ import (
 type Config interface {
 	DefaultTimestamp() bool
 	ZipCompression() bool
+	ClientCut() bool
 }
 
 type Handler struct {

internal/handler/upload.go

@@ -136,6 +136,7 @@ func (h *Handler) Upload(req *fasthttp.RequestCtx) {
 	var prm pool.PrmObjectPut
 	prm.SetHeader(*obj)
 	prm.SetPayload(file)
+	prm.SetClientCut(h.config.ClientCut())
 
 	bt := h.fetchBearerToken(ctx)
 	if bt != nil {