[#170] Updated docs and configuration of archive section

Signed-off-by: Nikita Zinkevich <n.zinkevich@yadro.com>

cmd/http-gw/app.go

@@ -97,7 +97,7 @@ type (
 
 		mu                   sync.RWMutex
 		defaultTimestamp     bool
-		zipCompression       bool
+		archiveCompression   bool
 		clientCut            bool
 		returnIndexPage      bool
 		indexPageTemplate    string
@@ -176,7 +176,7 @@ func (a *app) initAppSettings() {
 
 func (s *appSettings) update(v *viper.Viper, l *zap.Logger) {
 	defaultTimestamp := v.GetBool(cfgUploaderHeaderEnableDefaultTimestamp)
-	zipCompression := v.GetBool(cfgZipCompression)
+	archiveCompression := v.GetBool(cfgArchiveCompression)
 	returnIndexPage := v.GetBool(cfgIndexPageEnabled)
 	clientCut := v.GetBool(cfgClientCut)
 	bufferMaxSizeForPut := v.GetUint64(cfgBufferMaxSizeForPut)
@@ -194,7 +194,7 @@ func (s *appSettings) update(v *viper.Viper, l *zap.Logger) {
 	defer s.mu.Unlock()
 
 	s.defaultTimestamp = defaultTimestamp
-	s.zipCompression = zipCompression
+	s.archiveCompression = archiveCompression
 	s.returnIndexPage = returnIndexPage
 	s.clientCut = clientCut
 	s.bufferMaxSizeForPut = bufferMaxSizeForPut
@@ -232,10 +232,10 @@ func (s *appSettings) DefaultTimestamp() bool {
 	return s.defaultTimestamp
 }
 
-func (s *appSettings) ZipCompression() bool {
+func (s *appSettings) ArchiveCompression() bool {
 	s.mu.RLock()
 	defer s.mu.RUnlock()
-	return s.zipCompression
+	return s.archiveCompression
 }
 
 func (s *appSettings) IndexPageEnabled() bool {

cmd/http-gw/settings.go

@@ -127,8 +127,8 @@ const (
 	// Resolving.
 	cfgResolveOrder = "resolve_order"
 
-	// Zip compression.
-	cfgZipCompression = "zip.compression"
+	// Archive compression.
+	cfgArchiveCompression = "archive.compression"
 
 	// Runtime.
 	cfgSoftMemoryLimit = "runtime.soft_memory_limit"
@@ -251,7 +251,7 @@ func settings() *viper.Viper {
 	v.SetDefault(cfgUploaderHeaderEnableDefaultTimestamp, false)
 
 	// zip:
-	v.SetDefault(cfgZipCompression, false)
+	v.SetDefault(cfgArchiveCompression, false)
 
 	// metrics
 	v.SetDefault(cfgPprofAddress, "localhost:8083")

config/config.env

@@ -97,8 +97,8 @@ HTTP_GW_REBALANCE_TIMER=30s
 # The number of errors on connection after which node is considered as unhealthy
 HTTP_GW_POOL_ERROR_THRESHOLD=100
 
-# Enable zip compression to download files by common prefix.
-HTTP_GW_ZIP_COMPRESSION=false
+# Enable archive compression to download files by common prefix.
+HTTP_GW_ARCHIVE_COMPRESSION=false
 
 HTTP_GW_TRACING_ENABLED=true
 HTTP_GW_TRACING_ENDPOINT="localhost:4317"

config/config.yaml

@@ -121,8 +121,8 @@ index_page:
   enabled: false
   template_path: internal/handler/templates/index.gotmpl
 
-zip:
-  compression: false # Enable zip compression to download files by common prefix.
+archive:
+  compression: false # Enable archive compression to download files by common prefix.
 
 runtime:
   soft_memory_limit: 1gb

docs/api.md

@@ -1,11 +1,11 @@
 # HTTP Gateway Specification
 
-| Route                                           | Description                                  |
-|-------------------------------------------------|----------------------------------------------|
-| `/upload/{cid}`                                 | [Put object](#put-object)                    |
-| `/get/{cid}/{oid}`                              | [Get object](#get-object)                    |
-| `/get_by_attribute/{cid}/{attr_key}/{attr_val}` | [Search object](#search-object)              |
-| `/zip/{cid}/{prefix}`                           | [Download objects in archive](#download-zip) |
+| Route                                           | Description                                      |
+|-------------------------------------------------|--------------------------------------------------|
+| `/upload/{cid}`                                 | [Put object](#put-object)                        |
+| `/get/{cid}/{oid}`                              | [Get object](#get-object)                        |
+| `/get_by_attribute/{cid}/{attr_key}/{attr_val}` | [Search object](#search-object)                  |
+| `/zip/{cid}/{prefix}`, `/tar/{cid}/{prefix}`    | [Download objects in archive](#download-archive) |
 
 **Note:** `cid` parameter can be base58 encoded container ID or container name
 (the name must be registered in NNS, see appropriate section in [README](../README.md#nns)).
@@ -56,12 +56,13 @@ Upload file as object with attributes to FrostFS.
 
 ###### Headers
 
-| Header                 | Description                                                                                                                                        |
-|------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------|
-| Common headers         | See [bearer token](#bearer-token).                                                                                                                 |
-| `X-Attribute-System-*` | Used to set system FrostFS object attributes <br/> (e.g. use "X-Attribute-System-Expiration-Epoch" to set `__SYSTEM__EXPIRATION_EPOCH` attribute). |
-| `X-Attribute-*`        | Used to set regular object attributes <br/> (e.g. use "X-Attribute-My-Tag" to set `My-Tag` attribute).                                             |
-| `Date`                 | This header is used to calculate the right `__SYSTEM__EXPIRATION` attribute for object. If the header is missing, the current server time is used. |
+| Header                        | Description                                                                                                                                                               |
+|-------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| Common headers                | See [bearer token](#bearer-token).                                                                                                                                        |
+| `X-Attribute-System-*`        | Used to set system FrostFS object attributes <br/> (e.g. use "X-Attribute-System-Expiration-Epoch" to set `__SYSTEM__EXPIRATION_EPOCH` attribute).                        |
+| `X-Attribute-*`               | Used to set regular object attributes <br/> (e.g. use "X-Attribute-My-Tag" to set `My-Tag` attribute).                                                                    |
+| `X-Attribute-Explode-Archive` | If this header is set, gate reads files from uploaded `tar.gz` archive and creates object for each file in it. Set FilePath attribute as relative path from archive root. |
+| `Date`                        | This header is used to calculate the right `__SYSTEM__EXPIRATION` attribute for object. If the header is missing, the current server time is used.                        |
 
 There are some reserved headers type of `X-Attribute-FROSTFS-*` (headers are arranged in descending order of priority):
 
@@ -269,9 +270,9 @@ If more than one object is found, an arbitrary one will be used to get attribute
 | 400    | Some error occurred during operation. |
 | 404    | Container or object not found.        |
 
-## Download zip
+## Download archive
 
-Route: `/zip/{cid}/{prefix}`
+Route: `/zip/{cid}/{prefix}`, `/tar/{cid}/{prefix}`
 
 | Route parameter | Type      | Description                                             |
 |-----------------|-----------|---------------------------------------------------------|
@@ -282,12 +283,13 @@ Route: `/zip/{cid}/{prefix}`
 
 #### GET
 
-Find objects by prefix for `FilePath` attributes. Return found objects in zip archive.
+Find objects by prefix for `FilePath` attributes. Return found objects in zip or tar archive.
 Name of files in archive sets to `FilePath` attribute of objects.
 Time of files sets to time when object has started downloading.
-You can download all files in container that have `FilePath` attribute by `/zip/{cid}/` route.
+You can download all files in container that have `FilePath` attribute by `/zip/{cid}/` or
+`/tar/{cid}/` route.
 
-Archive can be compressed (see http-gw [configuration](gate-configuration.md#zip-section)).
+Archive can be compressed (see http-gw [configuration](gate-configuration.md#archive-section)).
 
 ##### Request
 

docs/gate-configuration.md

@@ -218,17 +218,16 @@ upload_header:
 |-------------------------|--------|---------------|---------------|-------------------------------------------------------------|
 | `use_default_timestamp` | `bool` | yes           | `false`       | Create timestamp for object if it isn't provided by header. |
 
-
-# `zip` section
+# `archive` section
 
 ```yaml
-zip:
+archive:
   compression: false
 ```
 
-| Parameter     | Type   | SIGHUP reload | Default value | Description                                                  |
-|---------------|--------|---------------|---------------|--------------------------------------------------------------|
-| `compression` | `bool` | yes           | `false`       | Enable zip compression when download files by common prefix. |
+| Parameter     | Type   | SIGHUP reload | Default value | Description                                                      |
+|---------------|--------|---------------|---------------|------------------------------------------------------------------|
+| `compression` | `bool` | yes           | `false`       | Enable archive compression when download files by common prefix. |
 
 
 # `pprof` section

internal/handler/download.go

@@ -105,7 +105,7 @@ func (h *Handler) getZipResponseWriter(ctx context.Context, log *zap.Logger, res
 
 func (h *Handler) createZipFile(zw *zip.Writer, obj *object.Object) (io.Writer, error) {
 	method := zip.Store
-	if h.config.ZipCompression() {
+	if h.config.ArchiveCompression() {
 		method = zip.Deflate
 	}
 
@@ -148,7 +148,7 @@ func (h *Handler) getTarResponseWriter(ctx context.Context, log *zap.Logger, res
 		defer resSearch.Close()
 
 		var gzipWriter *gzip.Writer
-		if h.config.ZipCompression() {
+		if h.config.ArchiveCompression() {
 			gzipWriter, _ = gzip.NewWriterLevel(w, gzip.DefaultCompression)
 		} else {
 			gzipWriter, _ = gzip.NewWriterLevel(w, gzip.NoCompression)

internal/handler/handler.go

@@ -29,7 +29,7 @@ import (
 
 type Config interface {
 	DefaultTimestamp() bool
-	ZipCompression() bool
+	ArchiveCompression() bool
 	ClientCut() bool
 	IndexPageEnabled() bool
 	IndexPageTemplate() string

internal/handler/handler_test.go

@@ -50,7 +50,7 @@ func (c *configMock) DefaultTimestamp() bool {
 	return false
 }
 
-func (c *configMock) ZipCompression() bool {
+func (c *configMock) ArchiveCompression() bool {
 	return false
 }
 

internal/handler/upload.go

@@ -197,7 +197,7 @@ func (h *Handler) uploadObject(c *fasthttp.RequestCtx, log *zap.Logger, bktInfo
 }
 
 // explodeGzip read files from tar.gz archive and creates objects for each of them.
-// Sets FilePath attribute with name from tar.Header
+// Sets FilePath attribute with Name from tar.Header.
 func (h *Handler) explodeGzip(c *fasthttp.RequestCtx, log *zap.Logger, bktInfo *data.BucketInfo, file io.Reader) {
 	gzipReader, err := gzip.NewReader(file)
 	if err != nil {