Release v0.27.0

Signed-off-by: Alex Vanin <a.vanin@yadro.com>
[#61 ] Update api-go version to latest support/v2.15
2023-07-12 11:34:00 +03:00 · 2023-06-19 11:46:18 +03:00 · 2023-05-16 17:41:33 +03:00 · 2023-05-16 17:41:27 +03:00 · 2023-04-26 09:53:36 +03:00 · 2023-04-17 16:28:27 +03:00
47 changed files with 1252 additions and 1254 deletions
--- a/.github/ISSUE_TEMPLATE/bug_report.md
+++ b/.github/ISSUE_TEMPLATE/bug_report.md
@ -2,7 +2,7 @@
 name: Bug report
 about: Create a report to help us improve
 title: ''
-labels: community, triage
+labels: community, triage, bug
 assignees: ''

 ---
@ -18,17 +18,17 @@ assignees: ''
 <!--- If suggesting a change/improvement, explain the difference from current behavior -->

 ## Possible Solution
-<!--- Not obligatory, but suggest a fix/reason for the bug, -->
-<!--- or ideas how to implement the addition or change -->
+<!-- Not obligatory
+    If no reason/fix/additions for the bug can be suggested,
+    uncomment the following phrase:
+
+<-- No fix can be suggested by a QA engineer. Further solutions shall be up to developers. -->

 ## Steps to Reproduce (for bugs)
 <!--- Provide a link to a live example, or an unambiguous set of steps to -->
 <!--- reproduce this bug. -->

 1.
-2.
-3.
-4.

 ## Context
 <!--- How has this issue affected you? What are you trying to accomplish? -->
--- a/.github/ISSUE_TEMPLATE/feature_request.md
+++ b/.github/ISSUE_TEMPLATE/feature_request.md
@ -7,14 +7,14 @@ assignees: ''

 ---

-**Is your feature request related to a problem? Please describe.**
-A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+## Is your feature request related to a problem? Please describe.
+<!--- A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] -->

-**Describe the solution you'd like**
-A clear and concise description of what you want to happen.
+## Describe the solution you'd like
+<!--- A clear and concise description of what you want to happen. -->

-**Describe alternatives you've considered**
-A clear and concise description of any alternative solutions or features you've considered.
+## Describe alternatives you've considered
+<!--- A clear and concise description of any alternative solutions or features you've considered. -->

-**Additional context**
-Add any other context or screenshots about the feature request here.
+## Additional context
+<!--- Add any other context or screenshots about the feature request here. -->
--- a/.github/logo.svg
+++ b/.github/logo.svg
@ -0,0 +1,70 @@
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--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@ -61,7 +61,7 @@ jobs:
    runs-on: ubuntu-20.04
    strategy:
      matrix:
-        go_versions: [ '1.17', '1.18', '1.19' ]
+        go_versions: [ '1.18', '1.19' ]
      fail-fast: false
    steps:
      - uses: actions/checkout@v2
--- a/.gitlint
+++ b/.gitlint
@ -0,0 +1,11 @@
+[general]
+fail-without-commits=True
+regex-style-search=True
+contrib=CC1
+
+[title-match-regex]
+regex=^\[\#[0-9Xx]+\]\s
+
+[ignore-by-title]
+regex=^Release(.*)
+ignore=title-match-regex
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@ -0,0 +1,45 @@
+ci:
+  autofix_prs: false
+
+repos:
+  - repo: https://github.com/jorisroovers/gitlint
+    rev:  v0.19.1
+    hooks:
+      - id: gitlint
+        stages: [commit-msg]
+      - id: gitlint-ci
+
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.4.0
+    hooks:
+      - id: check-added-large-files
+      - id: check-case-conflict
+      - id: check-executables-have-shebangs
+      - id: check-shebang-scripts-are-executable
+      - id: check-merge-conflict
+      - id: check-json
+      - id: check-xml
+      - id: check-yaml
+      - id: trailing-whitespace
+        args: [--markdown-linebreak-ext=md]
+      - id: end-of-file-fixer
+        exclude: ".key$"
+
+  - repo: https://github.com/shellcheck-py/shellcheck-py
+    rev: v0.9.0.2
+    hooks:
+      - id: shellcheck
+
+  - repo: https://github.com/golangci/golangci-lint
+    rev: v1.51.2
+    hooks:
+      - id: golangci-lint
+
+  - repo: local
+    hooks:
+      -   id: go-unit-tests
+          name: go unit tests
+          entry: make test
+          pass_filenames: false
+          types: [go]
+          language: system
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@ -4,276 +4,42 @@ This document outlines major changes between releases.

 ## [Unreleased]

-## [0.26.0] - 2022-12-28
+## [0.27.0] - Karpinsky - 2023-07-12
+
+This is a first FrostFS HTTP Gateway release named after
+[Karpinsky glacier](https://en.wikipedia.org/wiki/Karpinsky_Glacier).

 ### Fixed
- ENV config example (#236)
+- Require only one healthy storage server to start (#7)
+- Enable gate metrics (#38)
+- `Too many pings` error (#61)

 ### Added
- Support the `Date` header on upload (#214)
- Available routes specification (#216)
- Mention caching strategy in docs (#215)
- Add error response on attribute duplicates (#221)
- Multiple server listeners (#228)
-
-### Removed
- Deprecated linters (#239)
-
-### Updating from v0.25.1
-Make sure your configuration is valid:
-
-If you configure application using environment variables change:
-* `HTTP_GW_LISTEN_ADDRESS` -> `HTTP_GW_SERVER_0_ADDRESS`
-* `HTTP_GW_TLS_CERT_FILE` -> `HTTP_GW_SERVER_0_TLS_CERT_FILE` (and set `HTTP_GW_SERVER_0_TLS_ENABLED=true`)
-* `HTTP_GW_TLS_KEY_FILE` -> `HTTP_GW_SERVER_0_TLS_KEY_FILE` (and set `HTTP_GW_SERVER_0_TLS_ENABLED=true`)
-
-If you configure application using `.yaml` file change:
-* `listen_address` -> `server.0.address`
-* `tls.cert_file` -> `server.0.tls.cert_file` (and set `server.0.tls.enabled: true`)
-* `tls.key_file` -> `server.0.tls.key_file` (and set `server.0.tls.enabled: true`)
-
-## [0.25.1] - 2022-11-30
-
-### Fixed
- Download zip archive when `FilePath` is invalid (#222)
- Only one peer must be healthy to init pool (#233)
-
-### Added
- Debian packaging (#223)
- Timeout for individual operations in streaming RPC (#234)
-
-## [0.25.0] - 2022-10-31
-
-### Added
- Config reloading on SIGHUP (#200, #208)
- Stop pool dial on SIGINT (#212)
- Makefile help (#213)
+- Multiple configs support (#12)

 ### Changed
- Update NeoFS error handling (#206)
- GitHub actions updates (#205, #209)
- Unified system attribute format for GET and HEAD (#213)
+- Repository rebranding (#1)
+- Update neo-go to v0.101.0 (#8)
+- Update viper to v1.15.0 (#8)
+- Update go version to 1.18 (#9)
+- Errors have become more detailed (#18)
+- Update system attribute names (#22)
+- Separate integration tests with build tags (#24)
+- Changed values for `frostfs_http_gw_state_health` metric (#32)

-## [0.24.0] - 2022-09-14
+### Updating from v0.26.0

-### Fixed
- Fix expiration epoch calculation (#198)
- Fix panic on go1.19 (#188)
+To set system attributes use updated headers
+(you can use old ones for now, but their support will be dropped in the future releases):

-### Added
- Exposure of pool metrics (#179, #194)
-
-### Changed
- Help doesn't print empty parameters (#186)
- Update version calculation (#190, #199)
- Update neofs-sdk-go (#196)
- Update go version in CI and docker (#197, #202)
-
-## [0.23.0] - 2022-08-02
-
-### Added
- New param to configure pool error threshold (#184)
-
-### Changed
- Pprof and prometheus metrics configuration (#171)
- Drop GO111MODULES from builds (#182)
-
-### Updating from v0.22.0
-1. To enable pprof use `pprof.enabled` instead of `pprof` in config.
-   To enable prometheus metrics use `prometheus.enabled` instead of `metrics` in config.
-   If you are using the command line flags you can skip this step.
-
-## [0.22.0] - 2022-07-25
-
-### Added
- Default params documentation (#172)
- Health metric (#175)
-
-### Changed
- Version output (#169)
- Updated SDK Version (#178)
-
-## [0.21.0] - 2022-06-20
-
-### Fixed
- Downloading ZIP archive using streaming (#163)
-
-### Added
- New make target to build app in docker (#159)
-
-### Changed
- Increased buffer size for file uploading (#148)
- Updated linter version to v1.46.2 (#161)
- Updated CodeQL version to v2 (#158)
-
-
-## [0.20.0] - 2022-04-29
-
-### Fixed
- Get rid of data race on server shutdown (#145)
- Improved English in docs and comments (#153)
- Use `FilePath` to download zip (#150)
-
-### Added
- Support container name NNS resolving (#142)
-
-### Changed
- Updated docs (#133, #140)
- Increased default read/write timeouts (#154) 
- Updated SDK (#137, #139)
- Updated go version to 1.17 (#143)
- Improved error messages (#144)
-
-## [0.19.0] - 2022-03-16
-
-### Fixed
- Uploading object with zero payload (#122)
- Different headers format in GET and HEAD (#125)
- Fixed project name in docs (#120)
-
-### Added
- Support object attributes with spaces (#123)
-
-### Changed
- Updated fasthttp to v1.34.0 (#129)
- Updated NeoFS SDK to v1.0.0-rc.3 (#126, #132)
- Refactored content type detecting (#128)
-
-
-## [0.18.0] - 2021-12-10
-
-### Fixed
- System headers format (#111)
-
-### Added
- Different formats to set object's expiration: in epoch, duration, timestamp, 
-  RFC3339 (#108)
- Support of nodes priority (#115)
-
-### Changed 
- Updated testcontainers dependency (#100)
-
-## [0.17.0] - 2021-11-15
-
-Support of bulk file download with zip streams and various bug fixes.
-
-### Fixed
- Allow canonical `X-Attribute-Neofs-*` headers (#87)
- Responses with error message now end with `\n` character (#105)
- Application does not require all neofs endpoints to be healthy at start now
-  (#103)
- Application now tracks session token errors and recreates tokens in runtime
-  (#95)
-
-### Added
- Integration tests with [all-in-one](https://github.com/nspcc-dev/neofs-aio/)
-  test containers (#85, #94)
- Bulk download support with zip streams (#92, #96)
-
-## 0.16.1 (28 Jul 2021)
-
-New features:
-* logging requests (#77)
-* HEAD methods for download routes (#76)
-
-Improvements:
-* updated sdk-go dependency (#82)
-
-Bugs fixed:
-* wrong NotFound status was used (#30)
-
-## 0.16.0 (29 Jun 2021)
-
-We update HTTP gateway with NEP-6 wallets support, YAML configuration files
-and small fixes.
-
-New features:
- * YAML configuration file (#71)
-
-Behavior changes:
- * gateway key needs to be stored in a proper NEP-6 wallet now, `-k` option is
-   no longer available, see `-w` and `-a` (#68)
-
-Bugs fixed:
- * downloads were not streamed leading to excessive memory usage (#67)
- * Last-Modified header incorrectly used local time (#75)
-
-## 0.15.2 (22 Jun 2021)
-
-New features:
- * Content-Type returned for object GET requests can now be taken from
-   attributes (overriding autodetection, #65)
-
-Behavior changes:
- * grpc keepalive options can no longer be changed (#60)
-
-Improvements:
- * code refactoring (more reuse between different gateways, moved some code to
-   sdk-go, #47, #46, #51, #62, #63)
- * documentation updates and fixes (#53, #49, #55, #59)
- * updated api-go dependency (#57)
-
-Bugs fixed:
- * `-k` option wasn't accepted for key although it was documented (#50)
-
-## 0.15.1 (24 May 2021)
-
-This important release makes HTTP gateway compatible with NeoFS node version
-0.20.0.
-
-Behavior changes:
- * neofs-api-go was updated to 1.26.1, which contains some incompatible
-   changes in underlying components (#39, #44)
- * `neofs-http-gw` is consistently used now for repository, binary and image
-   names (#43)
-
-Improvements:
- * minor code cleanups based on stricter set of linters (#41)
- * updated README (#42)
-
-## 0.15.0 (30 Apr 2021)
-
-This is the first public release incorporating latest NeoFS protocol support
-and fixing some bugs.
-
-New features:
- * upload support (#14, #13, #29)
- * ephemeral keys (#26)
- * TLS server support (#28)
-
-Behavior changes:
- * node weights can now be specified as simple numbers instead of percentages
-   and gateway will calculate the proportion automatically (#27)
- * attributes are converted now to `X-Attribute-*` headers when retrieving
-   object from gate instead of `X-*` (#29)
-
-Improvements:
- * better Makefile (#16, #24, #33, #34)
- * updated documentation (#16, #29, #35, #36)
- * updated neofs-api-go to v1.25.0 (#17, #20)
- * updated fasthttp to v1.23.0+ (#17, #29)
- * refactoring, eliminating some dependencies (#20, #29)
-
-Bugs fixed:
- * gateway attempted to work with no NeoFS peers configured (#29)
- * some invalid headers could be sent for attributes using non-ASCII or
-   non-printable characters (#29)
+* `X-Attribute-Neofs-*` -> `X-Attribute-System-*`
+* `X-Attribute-NEOFS-*` -> `X-Attribute-SYSTEM-*`
+* `X-Attribute-neofs-*` -> `X-Attribute-system-*`

 ## Older versions

-Please refer to [Github
-releases](https://github.com/nspcc-dev/neofs-http-gw/releases/) for older
-releases.
+This project is a fork of [NeoFS HTTP Gateway](https://github.com/nspcc-dev/neofs-http-gw) from version v0.26.0.
+To see CHANGELOG for older versions, refer to https://github.com/nspcc-dev/neofs-http-gw/blob/master/CHANGELOG.md.

-[0.17.0]: https://github.com/nspcc-dev/neofs-http-gw/compare/v0.16.1...v0.17.0
-[0.18.0]: https://github.com/nspcc-dev/neofs-http-gw/compare/v0.17.0...v0.18.0
-[0.19.0]: https://github.com/nspcc-dev/neofs-http-gw/compare/v0.18.0...v0.19.0
-[0.20.0]: https://github.com/nspcc-dev/neofs-http-gw/compare/v0.19.0...v0.20.0
-[0.21.0]: https://github.com/nspcc-dev/neofs-http-gw/compare/v0.20.0...v0.21.0
-[0.22.0]: https://github.com/nspcc-dev/neofs-http-gw/compare/v0.21.0...v0.22.0
-[0.23.0]: https://github.com/nspcc-dev/neofs-http-gw/compare/v0.22.0...v0.23.0
-[0.24.0]: https://github.com/nspcc-dev/neofs-http-gw/compare/v0.23.0...v0.24.0
-[0.25.0]: https://github.com/nspcc-dev/neofs-http-gw/compare/v0.24.0...v0.25.0
-[0.25.1]: https://github.com/nspcc-dev/neofs-http-gw/compare/v0.25.0...v0.25.1
-[0.26.0]: https://github.com/nspcc-dev/neofs-http-gw/compare/v0.25.1...v0.26.0
-[Unreleased]: https://github.com/nspcc-dev/neofs-http-gw/compare/v0.26.0...master
+[0.27.0]: https://git.frostfs.info/TrueCloudLab/frostfs-http-gw/compare/72734ab4...v0.27.0
+[Unreleased]: https://git.frostfs.info/TrueCloudLab/frostfs-http-gw/compare/v0.27.0...master
--- a/15
+++ b/15
@ -14,7 +14,7 @@ BINDIR = bin
 DIRS = $(BINDIR)
 BINS = $(BINDIR)/frostfs-http-gw

-.PHONY: all $(BINS) $(DIRS) dep docker/ test cover fmt image image-push dirty-image lint docker/lint version clean
+.PHONY: all $(BINS) $(DIRS) dep docker/ test cover fmt image image-push dirty-image lint docker/lint pre-commit unpre-commit version clean

 # .deb package versioning
 OS_RELEASE = $(shell lsb_release -cs)
@ -62,6 +62,11 @@ docker/%:
 test:
 	@go test ./... -cover

+# Run integration tests
+.PHONY: integration-test
+integration-test:
+	@go test ./... -cover --tags=integration
+
 # Run tests with race detection and produce coverage output
 cover:
 	@go test -v -race ./... -coverprofile=coverage.txt -covermode=atomic
@ -109,6 +114,14 @@ docker/lint:
 	--env HOME=/src \
 	golangci/golangci-lint:v$(LINT_VERSION) bash -c 'cd /src/ && make lint'

+# Activate pre-commit hooks
+pre-commit:
+	pre-commit install -t pre-commit -t commit-msg
+
+# Deactivate pre-commit hooks
+unpre-commit:
+	pre-commit uninstall -t pre-commit -t commit-msg
+
 # Print version
 version:
 	@echo $(VERSION)
--- a/README.md
+++ b/README.md
@ -1,11 +1,12 @@
+<p align="center">
+<img src="./.github/logo.svg" width="500px" alt="FrostFS logo">
+</p>
 <p align="center">
  <a href="https://frostfs.info">FrostFS</a> is a decentralized distributed object storage integrated with the <a href="https://neo.org">NEO Blockchain</a>.
 </p>

 ---
-[![Report](https://goreportcard.com/badge/github.com/TrueCloudLab/frostfs-http-gw)](https://goreportcard.com/report/github.com/TrueCloudLab/frostfs-http-gw)
-![GitHub release (latest SemVer)](https://img.shields.io/github/v/release/TrueCloudLab/frostfs-http-gw?sort=semver)
-![License](https://img.shields.io/github/license/TrueCloudLab/frostfs-http-gw.svg?style=popout)
+[![Report](https://goreportcard.com/badge/git.frostfs.info/TrueCloudLab/frostfs-http-gw)](https://goreportcard.com/report/git.frostfs.info/TrueCloudLab/frostfs-http-gw)

 # FrostFS HTTP Gateway

@ -17,7 +18,7 @@ See available routes in [specification](./docs/api.md).

 ## Installation

-```go install github.com/TrueCloudLab/frostfs-http-gw```
+```go install git.frostfs.info/TrueCloudLab/frostfs-http-gw```

 Or you can call `make` to build it from the cloned repository (the binary will
 end up in `bin/frostfs-http-gw`). To build frostfs-http-gw binary in clean docker
@ -47,7 +48,7 @@ can be done either via `-p` parameter or via `HTTP_GW_PEERS_<N>_ADDRESS` and
 `HTTP_GW_PEERS_<N>_WEIGHT` environment variables (the gate supports multiple
 FrostFS nodes with weighted load balancing).

-If you launch HTTP gateway in bundle with [frostfs-dev-env](https://github.com/TrueCloudLab/frostfs-dev-env), 
+If you launch HTTP gateway in bundle with [frostfs-dev-env](https://git.frostfs.info/TrueCloudLab/frostfs-dev-env),
 you can get the IP address of the node in the output of `make hosts` command
 (with s0*.frostfs.devenv name).

@ -179,6 +180,23 @@ $ frostfs-http-gw --config your-config.yaml

 See [config](./config/config.yaml) and [defaults](./docs/gate-configuration.md) for example.

+#### Multiple configs
+
+You can use several config files when running application. It allows you to split configuration into parts.
+For example, you can use separate yaml file for pprof and prometheus section in config (see [config examples](./config)).
+You can either provide several files with repeating `--config` flag or provide path to the dir that contains all configs using `--config-dir` flag.
+Also, you can combine these flags:
+
+```shell
+$ frostfs-http-gw --config ./config/config.yaml --config /your/partial/config.yaml --config-dir ./config/dir
+```
+
+**Note:** next file in `--config` flag overwrites values from the previous one.
+Files from `--config-dir` directory overwrite values from `--config` files.
+So the command above run `frostfs-http-gw` to listen on `0.0.0.0:8080` address (value from `./config/config.yaml`),
+applies parameters from `/your/partial/config.yaml`,
+enable pprof (value from `./config/dir/pprof.yaml`) and prometheus (value from `./config/dir/prometheus.yaml`).
+
 ## HTTP API provided

 This gateway intentionally provides limited feature set and doesn't try to
@ -208,7 +226,7 @@ resolve_order:
  - nns
 ```

-2. Make sure your container is registered in NNS contract. If you use [frostfs-dev-env](https://github.com/TrueCloudLab/frostfs-dev-env) 
+2. Make sure your container is registered in NNS contract. If you use [frostfs-dev-env](https://git.frostfs.info/TrueCloudLab/frostfs-dev-env)
 you can check if your container (e.g. with `container-name` name) is registered in NNS:

 ```shell
@ -235,7 +253,7 @@ $ curl http://localhost:8082/get_by_attribute/container-name/FileName/object-nam

 #### Create a container

-You can create a container via [frostfs-cli](https://github.com/TrueCloudLab/frostfs-node/releases):
+You can create a container via [frostfs-cli](https://git.frostfs.info/TrueCloudLab/frostfs-node/releases):
 ```
 $ frostfs-cli -r $FROSTFS_NODE -w $WALLET container create --policy $POLICY --basic-acl $ACL
 ```
@ -248,13 +266,13 @@ For example:
 $ frostfs-cli -r 192.168.130.72:8080 -w ./wallet.json container create --policy "REP 3" --basic-acl public --await
 ```

-If you have launched nodes via [frostfs-dev-env](https://github.com/TrueCloudLab/frostfs-dev-env),
+If you have launched nodes via [frostfs-dev-env](https://git.frostfs.info/TrueCloudLab/frostfs-dev-env),
 you can get the key value from `wallets/wallet.json` or write the path to
 the file `wallets/wallet.key`.

 #### Prepare a file in a container

-To create a file via [frostfs-cli](https://github.com/TrueCloudLab/frostfs-node/releases), run a command below:
+To create a file via [frostfs-cli](https://git.frostfs.info/TrueCloudLab/frostfs-node/releases), run a command below:
 ```
 $ frostfs-cli -r $FROSTFS_NODE -k $KEY object put --file $FILENAME --cid $CID
 ```
@ -406,12 +424,12 @@ You can also add some attributes to your file using the following rules:
   "X-Attribute-" prefix stripped, that is if you add "X-Attribute-Ololo:
   100500" header to your request the resulting object will get "Ololo:
   100500" attribute
- * "X-Attribute-NEOFS-*" headers are special 
-   (`-NEOFS-` part can also be `-neofs-` or`-Neofs-`), they're used to set internal
-   NeoFS attributes starting with `__NEOFS__` prefix, for these attributes all
+ * "X-Attribute-SYSTEM-*" headers are special
+   (`-SYSTEM-` part can also be `-system-` or`-System-` (and even legacy `-Neofs-` for some next releases)), they're used to set internal
+   FrostFS attributes starting with `__SYSTEM__` prefix, for these attributes all
   dashes get converted to underscores and all letters are capitalized. For
-   example, you can use "X-Attribute-NEOFS-Expiration-Epoch" header to set
-   `__NEOFS__EXPIRATION_EPOCH` attribute
+   example, you can use "X-Attribute-SYSTEM-Expiration-Epoch" header to set
+   `__SYSTEM__EXPIRATION_EPOCH` attribute
 * `FileName` attribute is set from multipart's `filename` if not set
   explicitly via `X-Attribute-FileName` header
 * `Timestamp` attribute can be set using gateway local time if using
@ -421,13 +439,13 @@ You can also add some attributes to your file using the following rules:
 ---
 **NOTE**

-There are some reserved headers type of `X-Attribute-NEOFS-*` (headers are arranged in descending order of priority):
-1. `X-Attribute-Neofs-Expiration-Epoch: 100`
-2. `X-Attribute-Neofs-Expiration-Duration: 24h30m`
-3. `X-Attribute-Neofs-Expiration-Timestamp: 1637574797`
-4. `X-Attribute-Neofs-Expiration-RFC3339: 2021-11-22T09:55:49Z`
+There are some reserved headers type of `X-Attribute-SYSTEM-*` (headers are arranged in descending order of priority):
+1. `X-Attribute-System-Expiration-Epoch: 100`
+2. `X-Attribute-System-Expiration-Duration: 24h30m`
+3. `X-Attribute-System-Expiration-Timestamp: 1637574797`
+4. `X-Attribute-System-Expiration-RFC3339: 2021-11-22T09:55:49Z`

-which transforms to `X-Attribute-Neofs-Expiration-Epoch`. So you can provide expiration any convenient way. 
+which transforms to `X-Attribute-System-Expiration-Epoch`. So you can provide expiration any convenient way.

 ---

--- a/2
+++ b/2
@ -1 +1 @@
-v0.26.0
+v0.27.0
--- a/app.go
+++ b/app.go
@ -11,14 +11,14 @@ import (
 	"sync"
 	"syscall"

-	"github.com/TrueCloudLab/frostfs-http-gw/downloader"
-	"github.com/TrueCloudLab/frostfs-http-gw/metrics"
-	"github.com/TrueCloudLab/frostfs-http-gw/resolver"
-	"github.com/TrueCloudLab/frostfs-http-gw/response"
-	"github.com/TrueCloudLab/frostfs-http-gw/uploader"
-	"github.com/TrueCloudLab/frostfs-http-gw/utils"
-	"github.com/TrueCloudLab/frostfs-sdk-go/pool"
-	"github.com/TrueCloudLab/frostfs-sdk-go/user"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/downloader"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/metrics"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/resolver"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/response"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/uploader"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
 	"github.com/fasthttp/router"
 	"github.com/nspcc-dev/neo-go/cli/flags"
 	"github.com/nspcc-dev/neo-go/cli/input"
@ -62,15 +62,10 @@ type (

 	gateMetrics struct {
 		logger   *zap.Logger
-		provider GateMetricsProvider
+		provider *metrics.GateMetrics
 		mu       sync.RWMutex
 		enabled  bool
 	}
-
-	GateMetricsProvider interface {
-		SetHealth(int32)
-		Unregister()
-	}
 )

 // WithLogger returns Option to set a specific logger.
@ -214,15 +209,17 @@ func (a *app) getResolverConfig() ([]string, *resolver.Config) {
 func (a *app) initMetrics() {
 	gateMetricsProvider := metrics.NewGateMetrics(a.pool)
 	a.metrics = newGateMetrics(a.log, gateMetricsProvider, a.cfg.GetBool(cfgPrometheusEnabled))
+	a.metrics.SetHealth(metrics.HealthStatusStarting)
 }

-func newGateMetrics(logger *zap.Logger, provider GateMetricsProvider, enabled bool) *gateMetrics {
+func newGateMetrics(logger *zap.Logger, provider *metrics.GateMetrics, enabled bool) *gateMetrics {
 	if !enabled {
 		logger.Warn("metrics are disabled")
 	}
 	return &gateMetrics{
 		logger:   logger,
 		provider: provider,
+		enabled:  enabled,
 	}
 }

@ -236,7 +233,7 @@ func (m *gateMetrics) SetEnabled(enabled bool) {
 	m.mu.Unlock()
 }

-func (m *gateMetrics) SetHealth(status int32) {
+func (m *gateMetrics) SetHealth(status metrics.HealthStatus) {
 	m.mu.RLock()
 	if !m.enabled {
 		m.mu.RUnlock()
@ -250,7 +247,7 @@ func (m *gateMetrics) SetHealth(status int32) {
 func (m *gateMetrics) Shutdown() {
 	m.mu.Lock()
 	if m.enabled {
-		m.provider.SetHealth(0)
+		m.provider.SetHealth(metrics.HealthStatusShuttingDown)
 		m.enabled = false
 	}
 	m.provider.Unregister()
@ -335,7 +332,7 @@ func (a *app) Wait() {
 }

 func (a *app) setHealthStatus() {
-	a.metrics.SetHealth(1)
+	a.metrics.SetHealth(metrics.HealthStatusReady)
 }

 func (a *app) Serve(ctx context.Context) {
@ -380,14 +377,15 @@ LOOP:

 func (a *app) configReload() {
 	a.log.Info("SIGHUP config reload started")
-	if !a.cfg.IsSet(cmdConfig) {
+	if !a.cfg.IsSet(cmdConfig) && !a.cfg.IsSet(cmdConfigDir) {
 		a.log.Warn("failed to reload config because it's missed")
 		return
 	}
-	if err := readConfig(a.cfg); err != nil {
+	if err := readInConfig(a.cfg); err != nil {
 		a.log.Warn("failed to reload config", zap.Error(err))
 		return
 	}
+
 	if lvl, err := getLogLevel(a.cfg); err != nil {
 		a.log.Warn("log level won't be updated", zap.Error(err))
 	} else {
@ -485,33 +483,57 @@ func (a *app) AppParams() *utils.AppParams {
 func (a *app) initServers(ctx context.Context) {
 	serversInfo := fetchServers(a.cfg)

-	a.servers = make([]Server, len(serversInfo))
-	for i, serverInfo := range serversInfo {
-		a.log.Info("added server",
+	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))
-		a.servers[i] = newServer(ctx, serverInfo, a.log)
+			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("failed to add server", append(fields, zap.Error(err))...)
+			continue
+		}
+
+		a.servers = append(a.servers, srv)
+		a.log.Info("add server", fields...)
+	}
+
+	if len(a.servers) == 0 {
+		a.log.Fatal("no healthy servers")
 	}
 }

 func (a *app) updateServers() error {
 	serversInfo := fetchServers(a.cfg)

-	if len(serversInfo) != len(a.servers) {
-		return fmt.Errorf("invalid servers configuration: length mismatch: old '%d', new '%d", len(a.servers), len(serversInfo))
-	}
-
-	for i, serverInfo := range serversInfo {
-		if serverInfo.Address != a.servers[i].Address() {
-			return fmt.Errorf("invalid servers configuration: addresses mismatch: old '%s', new '%s", a.servers[i].Address(), serverInfo.Address)
+	var found bool
+	for _, serverInfo := range serversInfo {
+		index := a.serverIndex(serverInfo.Address)
+		if index == -1 {
+			continue
 		}

 		if serverInfo.TLS.Enabled {
-			if err := a.servers[i].UpdateCert(serverInfo.TLS.CertFile, serverInfo.TLS.KeyFile); err != nil {
+			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
+}
--- a/config/config.yaml
+++ b/config/config.yaml
@ -4,10 +4,10 @@ wallet:
  passphrase: pwd # Passphrase to decrypt wallet. If you're using a wallet without a password, place '' here.

 pprof:
-  enabled: true # Enable pprof.
+  enabled: false # Enable pprof.
  address: localhost:8083
 prometheus:
-  enabled: true # Enable metrics.
+  enabled: false # Enable metrics.
  address: localhost:8084

 logger:
--- a/config/dir/pprof.yaml
+++ b/config/dir/pprof.yaml
@ -0,0 +1,3 @@
+pprof:
+  enabled: true
+  address: localhost:8083
--- a/config/dir/prometheus.yaml
+++ b/config/dir/prometheus.yaml
@ -0,0 +1,3 @@
+prometheus:
+  enabled: true
+  address: localhost:8084
--- a/debian/control
+++ b/debian/control
@ -5,11 +5,10 @@ Maintainer: TrueCloudLab <tech@frostfs.info>
 Build-Depends: debhelper-compat (= 13), dh-sysuser, git, devscripts
 Standards-Version: 4.5.1
 Homepage: https://frostfs.info/
-Vcs-Git: https://github.com/TrueCloudLab/frostfs-http-gw.git
-Vcs-Browser: https://github.com/TrueCloudLab/frostfs-http-gw
+Vcs-Git: https://git.frostfs.info/TrueCloudLab/frostfs-http-gw.git
+Vcs-Browser: https://git.frostfs.info/TrueCloudLab/frostfs-http-gw

 Package: frostfs-http-gw
 Architecture: any
 Depends: ${misc:Depends}
 Description: FrostFS HTTP Gateway bridges FrostFS internal protocol and HTTP standard.
-
--- a/debian/copyright
+++ b/debian/copyright
@ -1,13 +1,13 @@
 Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
 Upstream-Name: frostfs-http-gw
 Upstream-Contact: tech@frostfs.info
-Source: https://github.com/TrueCloudLab/frostfs-http-gw
+Source: https://git.frostfs.info/TrueCloudLab/frostfs-http-gw

 Files: *
 Copyright: 2018-2022 NeoSPCC (@nspcc-dev), contributors of neofs-http-gw project
           (https://github.com/nspcc-dev/neofs-http-gw/blob/master/CREDITS.md)
           2022 True Cloud Lab (@TrueCloudLab), contributors of frostfs-http-gw project
-           (https://github.com/TrueCloudLab/frostfs-http-gw/blob/master/CREDITS.md)
+           (https://git.frostfs.info/TrueCloudLab/frostfs-http-gw/src/branch/master/CREDITS.md)


 License: GPL-3
--- a/debian/frostfs-http-gw.postinst
+++ b/debian/frostfs-http-gw.postinst
@ -29,8 +29,8 @@ case "$1" in
            chmod -f 0640 /etc/frostfs/$USERNAME/config.yaml || true
        fi
        USERDIR=$(getent passwd "frostfs-$USERNAME" | cut -d: -f6)
-        if ! dpkg-statoverride --list frostfs-$USERDIR >/dev/null; then
-            chown -f frostfs-$USERNAME: $USERDIR
+        if ! dpkg-statoverride --list frostfs-"$USERDIR" >/dev/null; then
+            chown -f frostfs-$USERNAME: "$USERDIR"
        fi
    ;;

--- a/debian/frostfs-http-gw.postrm
+++ b/debian/frostfs-http-gw.postrm
--- a/debian/frostfs-http-gw.preinst
+++ b/debian/frostfs-http-gw.preinst
--- a/debian/frostfs-http-gw.prerm
+++ b/debian/frostfs-http-gw.prerm
--- a/debian/rules
+++ b/debian/rules
@ -12,5 +12,3 @@ override_dh_installsystemd:

 override_dh_installchangelogs:
 		dh_installchangelogs -k CHANGELOG.md
-		
-
--- a/docs/api.md
+++ b/docs/api.md
@ -57,20 +57,20 @@ Upload file as object with attributes to FrostFS.
 ###### Headers

 | Header                 | Description                                                                                                                                        |
-|-----------------------|---------------------------------------------------------------------------------------------------------------------------------------------------|
+|------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------|
 | Common headers         | See [bearer token](#bearer-token).                                                                                                                 |
-| `X-Attribute-Neofs-*` | Used to set system NeoFS object attributes <br/> (e.g. use "X-Attribute-Neofs-Expiration-Epoch" to set `__NEOFS__EXPIRATION_EPOCH` attribute).    |
+| `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 `__NEOFS__EXPIRATION` attribute for object. If the header is missing, the current server time is used. |
+| `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-NEOFS-*` (headers are arranged in descending order of priority):
+There are some reserved headers type of `X-Attribute-FROSTFS-*` (headers are arranged in descending order of priority):

-1. `X-Attribute-Neofs-Expiration-Epoch: 100`
-2. `X-Attribute-Neofs-Expiration-Duration: 24h30m`
-3. `X-Attribute-Neofs-Expiration-Timestamp: 1637574797`
-4. `X-Attribute-Neofs-Expiration-RFC3339: 2021-11-22T09:55:49Z`
+1. `X-Attribute-System-Expiration-Epoch: 100`
+2. `X-Attribute-System-Expiration-Duration: 24h30m`
+3. `X-Attribute-System-Expiration-Timestamp: 1637574797`
+4. `X-Attribute-System-Expiration-RFC3339: 2021-11-22T09:55:49Z`

-which transforms to `X-Attribute-Neofs-Expiration-Epoch`. So you can provide expiration any convenient way.
+which transforms to `X-Attribute-System-Expiration-Epoch`. So you can provide expiration any convenient way.

 If you don't specify the `X-Attribute-Timestamp` header the `Timestamp` attribute can be set anyway
 (see http-gw [configuration](gate-configuration.md#upload-header-section)).
@ -122,8 +122,8 @@ Get an object (payload and attributes) by an address.
 ###### Headers

 | Header                 | Description                                                                                                                                  |
-|-----------------------|----------------------------------------------------------------------------------------------------------------------------------------------|
-| `X-Attribute-Neofs-*` | System NeoFS object attributes <br/> (e.g. `__NEOFS__EXPIRATION_EPOCH` set "X-Attribute-Neofs-Expiration-Epoch" header).                     |
+|------------------------|----------------------------------------------------------------------------------------------------------------------------------------------|
+| `X-Attribute-System-*` | System FrostFS object attributes <br/> (e.g. `__SYSTEM__EXPIRATION_EPOCH` set "X-Attribute-System-Expiration-Epoch" header).                 |
 | `X-Attribute-*`        | Regular object attributes <br/> (e.g. `My-Tag` set "X-Attribute-My-Tag" header).                                                             |
 | `Content-Disposition`  | Indicate how to browsers should treat file. <br/> Set `filename` as base part of `FileName` object attribute (if it's set, empty otherwise). |
 | `Content-Type`         | Indicate content type of object. Set from `Content-Type` attribute or detected using payload.                                                |
@ -158,8 +158,8 @@ Get an object attributes by an address.
 ###### Headers

 | Header                 | Description                                                                                                                  |
-|-----------------------|--------------------------------------------------------------------------------------------------------------------------|
-| `X-Attribute-Neofs-*` | System NeoFS object attributes <br/> (e.g. `__NEOFS__EXPIRATION_EPOCH` set "X-Attribute-Neofs-Expiration-Epoch" header). |
+|------------------------|------------------------------------------------------------------------------------------------------------------------------|
+| `X-Attribute-System-*` | System FrostFS object attributes <br/> (e.g. `__SYSTEM__EXPIRATION_EPOCH` set "X-Attribute-System-Expiration-Epoch" header). |
 | `X-Attribute-*`        | Regular object attributes <br/> (e.g. `My-Tag` set "X-Attribute-My-Tag" header).                                             |
 | `Content-Type`         | Indicate content type of object. Set from `Content-Type` attribute or detected using payload.                                |
 | `Content-Length`       | Size of object payload.                                                                                                      |
@ -207,8 +207,8 @@ If more than one object is found, an arbitrary one will be returned.
 ###### Headers

 | Header                 | Description                                                                                                                                  |
-|-----------------------|----------------------------------------------------------------------------------------------------------------------------------------------|
-| `X-Attribute-Neofs-*` | System NeoFS object attributes <br/> (e.g. `__NEOFS__EXPIRATION_EPOCH` set "X-Attribute-Neofs-Expiration-Epoch" header).                     |
+|------------------------|----------------------------------------------------------------------------------------------------------------------------------------------|
+| `X-Attribute-System-*` | System FrostFS object attributes <br/> (e.g. `__SYSTEM__EXPIRATION_EPOCH` set "X-Attribute-System-Expiration-Epoch" header).                 |
 | `X-Attribute-*`        | Regular object attributes <br/> (e.g. `My-Tag` set "X-Attribute-My-Tag" header).                                                             |
 | `Content-Disposition`  | Indicate how to browsers should treat file. <br/> Set `filename` as base part of `FileName` object attribute (if it's set, empty otherwise). |
 | `Content-Type`         | Indicate content type of object. Set from `Content-Type` attribute or detected using payload.                                                |
@ -244,8 +244,8 @@ If more than one object is found, an arbitrary one will be used to get attribute
 ###### Headers

 | Header                 | Description                                                                                                                  |
-|-----------------------|--------------------------------------------------------------------------------------------------------------------------|
-| `X-Attribute-Neofs-*` | System NeoFS object attributes <br/> (e.g. `__NEOFS__EXPIRATION_EPOCH` set "X-Attribute-Neofs-Expiration-Epoch" header). |
+|------------------------|------------------------------------------------------------------------------------------------------------------------------|
+| `X-Attribute-System-*` | System FrostFS object attributes <br/> (e.g. `__SYSTEM__EXPIRATION_EPOCH` set "X-Attribute-System-Expiration-Epoch" header). |
 | `X-Attribute-*`        | Regular object attributes <br/> (e.g. `My-Tag` set "X-Attribute-My-Tag" header).                                             |
 | `Content-Type`         | Indicate content type of object. Set from `Content-Type` attribute or detected using payload.                                |
 | `Content-Length`       | Size of object payload.                                                                                                      |
--- a/downloader/download.go
+++ b/downloader/download.go
@ -14,20 +14,18 @@ import (
 	"strconv"
 	"strings"
 	"time"
-	"unicode"
-	"unicode/utf8"

-	"github.com/TrueCloudLab/frostfs-http-gw/resolver"
-	"github.com/TrueCloudLab/frostfs-http-gw/response"
-	"github.com/TrueCloudLab/frostfs-http-gw/tokens"
-	"github.com/TrueCloudLab/frostfs-http-gw/utils"
-	"github.com/TrueCloudLab/frostfs-sdk-go/bearer"
-	"github.com/TrueCloudLab/frostfs-sdk-go/client"
-	"github.com/TrueCloudLab/frostfs-sdk-go/container"
-	cid "github.com/TrueCloudLab/frostfs-sdk-go/container/id"
-	"github.com/TrueCloudLab/frostfs-sdk-go/object"
-	oid "github.com/TrueCloudLab/frostfs-sdk-go/object/id"
-	"github.com/TrueCloudLab/frostfs-sdk-go/pool"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/resolver"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/response"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/tokens"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/bearer"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
 	"github.com/valyala/fasthttp"
 	"go.uber.org/atomic"
 	"go.uber.org/zap"
@ -131,9 +129,9 @@ func (r request) receiveFile(clnt *pool.Pool, objectAddress oid.Address) {
 		if !isValidToken(key) || !isValidValue(val) {
 			continue
 		}
-		if strings.HasPrefix(key, utils.SystemAttributePrefix) {
-			key = systemBackwardTranslator(key)
-		}
+
+		key = utils.BackwardTransformIfSystem(key)
+
 		r.Response.Header.Set(utils.UserAttributeHeaderPrefix+key, val)
 		switch key {
 		case object.AttributeFileName:
@ -187,36 +185,6 @@ func (r request) receiveFile(clnt *pool.Pool, objectAddress oid.Address) {
 	r.Response.SetBodyStream(rObj.Payload, int(payloadSize))
 }

-// systemBackwardTranslator is used to convert headers looking like '__NEOFS__ATTR_NAME' to 'Neofs-Attr-Name'.
-func systemBackwardTranslator(key string) string {
-	// trim specified prefix '__NEOFS__'
-	key = strings.TrimPrefix(key, utils.SystemAttributePrefix)
-
-	var res strings.Builder
-	res.WriteString("Neofs-")
-
-	strs := strings.Split(key, "_")
-	for i, s := range strs {
-		s = title(strings.ToLower(s))
-		res.WriteString(s)
-		if i != len(strs)-1 {
-			res.WriteString("-")
-		}
-	}
-
-	return res.String()
-}
-
-func title(str string) string {
-	if str == "" {
-		return ""
-	}
-
-	r, size := utf8.DecodeRuneInString(str)
-	r0 := unicode.ToTitle(r)
-	return string(r0) + str[size:]
-}
-
 func bearerToken(ctx context.Context) *bearer.Token {
 	if tkn, err := tokens.LoadBearerToken(ctx); err == nil {
 		return tkn
@ -225,19 +193,15 @@ func bearerToken(ctx context.Context) *bearer.Token {
 }

 func (r *request) handleFrostFSErr(err error, start time.Time) {
-	r.log.Error(
-		"could not receive object",
+	logFields := []zap.Field{
 		zap.Stringer("elapsed", time.Since(start)),
 		zap.Error(err),
-	)
-
-	if client.IsErrObjectNotFound(err) || client.IsErrContainerNotFound(err) {
-		response.Error(r.RequestCtx, "Not Found", fasthttp.StatusNotFound)
-		return
 	}
+	statusCode, msg, additionalFields := response.FormErrorResponse("could not receive object", err)
+	logFields = append(logFields, additionalFields...)

-	msg := fmt.Sprintf("could not receive object: %v", err)
-	response.Error(r.RequestCtx, msg, fasthttp.StatusBadRequest)
+	r.log.Error("could not receive object", logFields...)
+	response.Error(r.RequestCtx, msg, statusCode)
 }

 // Downloader is a download request handler.
--- a/downloader/download_test.go
+++ b/downloader/download_test.go
@ -1,23 +0,0 @@
-package downloader
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-func TestSystemBackwardTranslator(t *testing.T) {
-	input := []string{
-		"__NEOFS__EXPIRATION_EPOCH",
-		"__NEOFS__RANDOM_ATTR",
-	}
-	expected := []string{
-		"Neofs-Expiration-Epoch",
-		"Neofs-Random-Attr",
-	}
-
-	for i, str := range input {
-		res := systemBackwardTranslator(str)
-		require.Equal(t, expected[i], res)
-	}
-}
--- a/downloader/head.go
+++ b/downloader/head.go
@ -4,15 +4,14 @@ import (
 	"io"
 	"net/http"
 	"strconv"
-	"strings"
 	"time"

-	"github.com/TrueCloudLab/frostfs-http-gw/response"
-	"github.com/TrueCloudLab/frostfs-http-gw/tokens"
-	"github.com/TrueCloudLab/frostfs-http-gw/utils"
-	"github.com/TrueCloudLab/frostfs-sdk-go/object"
-	oid "github.com/TrueCloudLab/frostfs-sdk-go/object/id"
-	"github.com/TrueCloudLab/frostfs-sdk-go/pool"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/response"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/tokens"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
 	"github.com/valyala/fasthttp"
 	"go.uber.org/zap"
 )
@ -56,9 +55,9 @@ func (r request) headObject(clnt *pool.Pool, objectAddress oid.Address) {
 		if !isValidToken(key) || !isValidValue(val) {
 			continue
 		}
-		if strings.HasPrefix(key, utils.SystemAttributePrefix) {
-			key = systemBackwardTranslator(key)
-		}
+
+		key = utils.BackwardTransformIfSystem(key)
+
 		r.Response.Header.Set(utils.UserAttributeHeaderPrefix+key, val)
 		switch key {
 		case object.AttributeTimestamp:
--- a/downloader/reader_test.go
+++ b/downloader/reader_test.go
@ -1,3 +1,5 @@
+//go:build !integration
+
 package downloader

 import (
--- a/go.mod
+++ b/go.mod
@ -1,71 +1,74 @@
-module github.com/TrueCloudLab/frostfs-http-gw
+module git.frostfs.info/TrueCloudLab/frostfs-http-gw

-go 1.17
+go 1.18

 require (
-	github.com/TrueCloudLab/frostfs-api-go/v2 v2.0.0-20221212144048-1351b6656d68
-	github.com/TrueCloudLab/frostfs-sdk-go v0.0.0-20221214065929-4c779423f556
+	git.frostfs.info/TrueCloudLab/frostfs-api-go/v2 v2.15.1-0.20230602142024-4cb0068ddef0
+	git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20230329125804-552219b8e130
 	github.com/fasthttp/router v1.4.1
-	github.com/nspcc-dev/neo-go v0.99.4
+	github.com/nspcc-dev/neo-go v0.101.0
 	github.com/prometheus/client_golang v1.13.0
 	github.com/spf13/pflag v1.0.5
-	github.com/spf13/viper v1.8.1
-	github.com/stretchr/testify v1.8.0
+	github.com/spf13/viper v1.15.0
+	github.com/stretchr/testify v1.8.2
 	github.com/testcontainers/testcontainers-go v0.13.0
 	github.com/valyala/fasthttp v1.34.0
 	go.uber.org/atomic v1.10.0
-	go.uber.org/zap v1.23.0
+	go.uber.org/zap v1.24.0
 )

 require (
+	git.frostfs.info/TrueCloudLab/frostfs-contract v0.0.0-20230307110621-19a8ef2d02fb // indirect
+	git.frostfs.info/TrueCloudLab/frostfs-crypto v0.6.0 // indirect
+	git.frostfs.info/TrueCloudLab/hrw v1.2.0 // indirect
+	git.frostfs.info/TrueCloudLab/rfc6979 v0.4.0 // indirect
+	git.frostfs.info/TrueCloudLab/tzhash v1.8.0 // indirect
 	github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1 // indirect
 	github.com/Microsoft/go-winio v0.5.2 // indirect
 	github.com/Microsoft/hcsshim v0.9.2 // indirect
-	github.com/TrueCloudLab/frostfs-contract v0.0.0-20221213081248-6c805c1b4e42 // indirect
-	github.com/TrueCloudLab/frostfs-crypto v0.5.0 // indirect
-	github.com/TrueCloudLab/hrw v1.1.0 // indirect
-	github.com/TrueCloudLab/rfc6979 v0.3.0 // indirect
-	github.com/TrueCloudLab/tzhash v1.7.0 // indirect
 	github.com/andybalholm/brotli v1.0.4 // indirect
-	github.com/antlr/antlr4/runtime/Go/antlr v1.4.10 // indirect
+	github.com/antlr/antlr4/runtime/Go/antlr/v4 v4.0.0-20221202181307-76fa05c21b12 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
-	github.com/btcsuite/btcd v0.22.0-beta // indirect
-	github.com/cenkalti/backoff/v4 v4.1.3 // indirect
-	github.com/cespare/xxhash/v2 v2.1.2 // indirect
+	github.com/cenkalti/backoff/v4 v4.2.0 // indirect
+	github.com/cespare/xxhash/v2 v2.2.0 // indirect
 	github.com/containerd/cgroups v1.0.3 // indirect
 	github.com/containerd/containerd v1.6.2 // indirect
-	github.com/coreos/go-semver v0.3.0 // indirect
 	github.com/cpuguy83/go-md2man/v2 v2.0.1 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 // indirect
 	github.com/docker/distribution v2.8.1+incompatible // indirect
 	github.com/docker/docker v20.10.14+incompatible // indirect
 	github.com/docker/go-connections v0.4.0 // indirect
 	github.com/docker/go-units v0.4.0 // indirect
-	github.com/fsnotify/fsnotify v1.4.9 // indirect
+	github.com/fsnotify/fsnotify v1.6.0 // indirect
+	github.com/go-logr/logr v1.2.3 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/google/uuid v1.3.0 // indirect
 	github.com/gorilla/mux v1.8.0 // indirect
 	github.com/gorilla/websocket v1.4.2 // indirect
-	github.com/hashicorp/golang-lru v0.5.5-0.20210104140557-80c98217689d // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.7.0 // indirect
+	github.com/hashicorp/golang-lru v0.6.0 // indirect
+	github.com/hashicorp/golang-lru/v2 v2.0.1 // indirect
 	github.com/hashicorp/hcl v1.0.0 // indirect
 	github.com/klauspost/compress v1.15.0 // indirect
-	github.com/magiconair/properties v1.8.6 // indirect
+	github.com/magiconair/properties v1.8.7 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.2-0.20181231171920-c182affec369 // indirect
-	github.com/mitchellh/mapstructure v1.4.1 // indirect
+	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/moby/sys/mount v0.3.2 // indirect
 	github.com/moby/sys/mountinfo v0.6.1 // indirect
 	github.com/moby/term v0.0.0-20210619224110-3f7ff695adc6 // indirect
 	github.com/morikuni/aec v1.0.0 // indirect
 	github.com/mr-tron/base58 v1.2.0 // indirect
 	github.com/nspcc-dev/go-ordered-json v0.0.0-20220111165707-25110be27d22 // indirect
-	github.com/nspcc-dev/neo-go/pkg/interop v0.0.0-20220927123257-24c107e3a262 // indirect
+	github.com/nspcc-dev/neo-go/pkg/interop v0.0.0-20221202075445-cb5c18dc73eb // indirect
 	github.com/nspcc-dev/rfc6979 v0.2.0 // indirect
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.0.2 // indirect
 	github.com/opencontainers/runc v1.1.1 // indirect
-	github.com/pelletier/go-toml v1.9.3 // indirect
+	github.com/pelletier/go-toml/v2 v2.0.6 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/prometheus/client_model v0.2.0 // indirect
@ -75,26 +78,34 @@ require (
 	github.com/savsgio/gotils v0.0.0-20210617111740-97865ed5a873 // indirect
 	github.com/sirupsen/logrus v1.8.1 // indirect
 	github.com/spaolacci/murmur3 v1.1.0 // indirect
-	github.com/spf13/afero v1.6.0 // indirect
-	github.com/spf13/cast v1.3.1 // indirect
+	github.com/spf13/afero v1.9.3 // indirect
+	github.com/spf13/cast v1.5.0 // indirect
 	github.com/spf13/jwalterweatherman v1.1.0 // indirect
-	github.com/subosito/gotenv v1.2.0 // indirect
+	github.com/subosito/gotenv v1.4.2 // indirect
 	github.com/syndtr/goleveldb v1.0.1-0.20210819022825-2ae1ddf74ef7 // indirect
 	github.com/urfave/cli v1.22.5 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
-	go.opencensus.io v0.23.0 // indirect
-	go.uber.org/multierr v1.8.0 // indirect
-	golang.org/x/crypto v0.0.0-20220214200702-86341886e292 // indirect
-	golang.org/x/net v0.0.0-20220412020605-290c469a71a5 // indirect
-	golang.org/x/sync v0.0.0-20220601150217-0de741cfad7f // indirect
-	golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a // indirect
-	golang.org/x/term v0.0.0-20210927222741-03fcf44c2211 // indirect
-	golang.org/x/text v0.3.7 // indirect
-	google.golang.org/genproto v0.0.0-20220414192740-2d67ff6cf2b4 // indirect
-	google.golang.org/grpc v1.48.0 // indirect
+	go.opencensus.io v0.24.0 // indirect
+	go.opentelemetry.io/otel v1.14.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/internal/retry v1.14.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.14.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.14.0 // indirect
+	go.opentelemetry.io/otel/exporters/stdout/stdouttrace v1.14.0 // indirect
+	go.opentelemetry.io/otel/sdk v1.14.0 // indirect
+	go.opentelemetry.io/otel/trace v1.14.0 // indirect
+	go.opentelemetry.io/proto/otlp v0.19.0 // indirect
+	go.uber.org/multierr v1.9.0 // indirect
+	golang.org/x/crypto v0.4.0 // indirect
+	golang.org/x/exp v0.0.0-20221227203929-1b447090c38c // indirect
+	golang.org/x/net v0.7.0 // indirect
+	golang.org/x/sync v0.1.0 // indirect
+	golang.org/x/sys v0.5.0 // indirect
+	golang.org/x/term v0.5.0 // indirect
+	golang.org/x/text v0.7.0 // indirect
+	google.golang.org/genproto v0.0.0-20230110181048-76db0878b65f // indirect
+	google.golang.org/grpc v1.53.0 // indirect
 	google.golang.org/protobuf v1.28.1 // indirect
 	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
-	gopkg.in/ini.v1 v1.62.0 // indirect
-	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/ini.v1 v1.67.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
--- a/go.sum
+++ b/go.sum
--- a/integration_test.go
+++ b/integration_test.go
@ -1,3 +1,5 @@
+//go:build integration
+
 package main

 import (
@ -13,14 +15,15 @@ import (
 	"testing"
 	"time"

-	"github.com/TrueCloudLab/frostfs-sdk-go/container"
-	"github.com/TrueCloudLab/frostfs-sdk-go/container/acl"
-	cid "github.com/TrueCloudLab/frostfs-sdk-go/container/id"
-	"github.com/TrueCloudLab/frostfs-sdk-go/netmap"
-	"github.com/TrueCloudLab/frostfs-sdk-go/object"
-	oid "github.com/TrueCloudLab/frostfs-sdk-go/object/id"
-	"github.com/TrueCloudLab/frostfs-sdk-go/pool"
-	"github.com/TrueCloudLab/frostfs-sdk-go/user"
+	containerv2 "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/container"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/acl"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
 	"github.com/spf13/viper"
 	"github.com/stretchr/testify/require"
@ -35,21 +38,15 @@ type putResponse struct {

 const (
 	testContainerName = "friendly"
-	versionWithNativeNames = "0.27.5"
 	testListenAddress = "localhost:8082"
 	testHost          = "http://" + testListenAddress
 )

 func TestIntegration(t *testing.T) {
 	rootCtx := context.Background()
-	aioImage := "nspccdev/neofs-aio-testcontainer:"
+	aioImage := "truecloudlab/frostfs-aio:"
 	versions := []string{
-		"0.27.5",
-		"0.28.1",
-		"0.29.0",
-		"0.30.0",
-		"0.32.0",
-		"latest",
+		"1.2.5", // frostfs-storage v0.36.0 RC
 	}
 	key, err := keys.NewPrivateKeyFromHex("1dd37fba80fec4e6a6f13fd708d8dcb3b29def768017052f6c930fa1c5d90bbb")
 	require.NoError(t, err)
@ -95,11 +92,9 @@ func simplePut(ctx context.Context, t *testing.T, p *pool.Pool, CID cid.ID, vers
 	url := testHost + "/upload/" + CID.String()
 	makePutRequestAndCheck(ctx, t, p, CID, url)

-	if version >= versionWithNativeNames {
 	url = testHost + "/upload/" + testContainerName
 	makePutRequestAndCheck(ctx, t, p, CID, url)
 }
-}

 func makePutRequestAndCheck(ctx context.Context, t *testing.T, p *pool.Pool, cnrID cid.ID, url string) {
 	content := "content of file"
@ -221,12 +216,10 @@ func simpleGet(ctx context.Context, t *testing.T, clientPool *pool.Pool, ownerID
 	require.NoError(t, err)
 	checkGetResponse(t, resp, content, attributes)

-	if version >= versionWithNativeNames {
 	resp, err = http.Get(testHost + "/get/" + testContainerName + "/" + id.String())
 	require.NoError(t, err)
 	checkGetResponse(t, resp, content, attributes)
 }
-}

 func checkGetResponse(t *testing.T, resp *http.Response, content string, attributes map[string]string) {
 	defer func() {
@ -275,12 +268,10 @@ func getByAttr(ctx context.Context, t *testing.T, clientPool *pool.Pool, ownerID
 	require.NoError(t, err)
 	checkGetByAttrResponse(t, resp, content, expectedAttr)

-	if version >= versionWithNativeNames {
 	resp, err = http.Get(testHost + "/get_by_attribute/" + testContainerName + "/" + keyAttr + "/" + valAttr)
 	require.NoError(t, err)
 	checkGetByAttrResponse(t, resp, content, expectedAttr)
 }
-}

 func getZip(ctx context.Context, t *testing.T, clientPool *pool.Pool, ownerID user.ID, CID cid.ID, version string) {
 	names := []string{"zipfolder/dir/name1.txt", "zipfolder/name2.txt"}
@ -294,11 +285,9 @@ func getZip(ctx context.Context, t *testing.T, clientPool *pool.Pool, ownerID us
 	baseURL := testHost + "/zip/" + CID.String()
 	makeZipTest(t, baseURL, names, contents)

-	if version >= versionWithNativeNames {
 	baseURL = testHost + "/zip/" + testContainerName
 	makeZipTest(t, baseURL, names, contents)
 }
-}

 func makeZipTest(t *testing.T, baseURL string, names, contents []string) {
 	url := baseURL + "/zipfolder"
@ -405,11 +394,11 @@ func createContainer(ctx context.Context, t *testing.T, clientPool *pool.Pool, o

 	container.SetCreationTime(&cnr, time.Now())

-	if version >= versionWithNativeNames {
 	var domain container.Domain
 	domain.SetName(testContainerName)
-		container.WriteDomain(&cnr, domain)
-	}
+
+	cnr.SetAttribute(containerv2.SysAttributeName, domain.Name())
+	cnr.SetAttribute(containerv2.SysAttributeZone, domain.Zone())

 	var waitPrm pool.WaitParams
 	waitPrm.SetTimeout(15 * time.Second)
--- a/metrics/metrics.go
+++ b/metrics/metrics.go
@ -3,7 +3,7 @@ package metrics
 import (
 	"net/http"

-	"github.com/TrueCloudLab/frostfs-sdk-go/pool"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 	"go.uber.org/zap"
@ -31,6 +31,16 @@ const (
 	methodCreateSession    = "create_session"
 )

+// HealthStatus of the gate application.
+type HealthStatus int32
+
+const (
+	HealthStatusUndefined    HealthStatus = 0
+	HealthStatusStarting     HealthStatus = 1
+	HealthStatusReady        HealthStatus = 2
+	HealthStatusShuttingDown HealthStatus = 3
+)
+
 type GateMetrics struct {
 	stateMetrics
 	poolMetricsCollector
@ -87,7 +97,7 @@ func (m stateMetrics) unregister() {
 	prometheus.Unregister(m.healthCheck)
 }

-func (m stateMetrics) SetHealth(s int32) {
+func (m stateMetrics) SetHealth(s HealthStatus) {
 	m.healthCheck.Set(float64(s))
 }

--- a/resolver/frostfs.go
+++ b/resolver/frostfs.go
@ -5,7 +5,7 @@ import (
 	"errors"
 	"fmt"

-	"github.com/TrueCloudLab/frostfs-sdk-go/pool"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
 )

 // FrostFSResolver represents virtual connection to the FrostFS network.
--- a/resolver/resolver.go
+++ b/resolver/resolver.go
@ -6,9 +6,9 @@ import (
 	"fmt"
 	"sync"

-	"github.com/TrueCloudLab/frostfs-sdk-go/container"
-	cid "github.com/TrueCloudLab/frostfs-sdk-go/container/id"
-	"github.com/TrueCloudLab/frostfs-sdk-go/ns"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/ns"
 )

 const (
--- a/response/utils.go
+++ b/response/utils.go
@ -1,7 +1,41 @@
 package response

-import "github.com/valyala/fasthttp"
+import (
+	"errors"
+	"fmt"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
+	sdkstatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
+	"github.com/valyala/fasthttp"
+	"go.uber.org/zap"
+)

 func Error(r *fasthttp.RequestCtx, msg string, code int) {
 	r.Error(msg+"\n", code)
 }
+
+func FormErrorResponse(message string, err error) (int, string, []zap.Field) {
+	var (
+		msg        string
+		statusCode int
+		logFields  []zap.Field
+	)
+
+	st := new(sdkstatus.ObjectAccessDenied)
+
+	switch {
+	case errors.As(err, &st):
+		statusCode = fasthttp.StatusForbidden
+		reason := st.Reason()
+		msg = fmt.Sprintf("%s: %v: %s", message, err, reason)
+		logFields = append(logFields, zap.String("error_detail", reason))
+	case client.IsErrObjectNotFound(err) || client.IsErrContainerNotFound(err):
+		statusCode = fasthttp.StatusNotFound
+		msg = "Not Found"
+	default:
+		statusCode = fasthttp.StatusBadRequest
+		msg = fmt.Sprintf("%s: %v", message, err)
+	}
+
+	return statusCode, msg, logFields
+}
--- a/server.go
+++ b/server.go
@ -7,8 +7,6 @@ import (
 	"fmt"
 	"net"
 	"sync"
-
-	"go.uber.org/zap"
 )

 type (
@ -57,11 +55,11 @@ func (s *server) UpdateCert(certFile, keyFile string) error {
 	return s.tlsProvider.UpdateCert(certFile, keyFile)
 }

-func newServer(ctx context.Context, serverInfo ServerInfo, logger *zap.Logger) *server {
+func newServer(ctx context.Context, serverInfo ServerInfo) (*server, error) {
 	var lic net.ListenConfig
 	ln, err := lic.Listen(ctx, "tcp", serverInfo.Address)
 	if err != nil {
-		logger.Fatal("could not prepare listener", zap.String("address", serverInfo.Address), zap.Error(err))
+		return nil, fmt.Errorf("could not prepare listener: %w", err)
 	}

 	tlsProvider := &certProvider{
@ -70,7 +68,7 @@ func newServer(ctx context.Context, serverInfo ServerInfo, logger *zap.Logger) *

 	if serverInfo.TLS.Enabled {
 		if err = tlsProvider.UpdateCert(serverInfo.TLS.CertFile, serverInfo.TLS.KeyFile); err != nil {
-			logger.Fatal("failed to update cert", zap.Error(err))
+			return nil, fmt.Errorf("failed to update cert: %w", err)
 		}

 		ln = tls.NewListener(ln, &tls.Config{
@ -82,7 +80,7 @@ func newServer(ctx context.Context, serverInfo ServerInfo, logger *zap.Logger) *
 		address:     serverInfo.Address,
 		listener:    ln,
 		tlsProvider: tlsProvider,
-	}
+	}, nil
 }

 func (p *certProvider) GetCertificate(*tls.ClientHelloInfo) (*tls.Certificate, error) {
--- a/settings.go
+++ b/settings.go
@ -3,13 +3,14 @@ package main
 import (
 	"fmt"
 	"os"
+	"path"
 	"runtime"
 	"sort"
 	"strconv"
 	"strings"
 	"time"

-	"github.com/TrueCloudLab/frostfs-http-gw/resolver"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/resolver"
 	"github.com/spf13/pflag"
 	"github.com/spf13/viper"
 	"github.com/valyala/fasthttp"
@ -84,6 +85,7 @@ const (
 	cmdWallet        = "wallet"
 	cmdAddress       = "address"
 	cmdConfig        = "config"
+	cmdConfigDir     = "config-dir"
 	cmdListenAddress = "listen_address"
 )

@ -114,7 +116,8 @@ func settings() *viper.Viper {

 	flags.StringP(cmdWallet, "w", "", `path to the wallet`)
 	flags.String(cmdAddress, "", `address of wallet account`)
-	flags.String(cmdConfig, "", "config path")
+	flags.StringArray(cmdConfig, nil, "config paths")
+	flags.String(cmdConfigDir, "", "config dir path")
 	flags.Duration(cfgConTimeout, defaultConnectTimeout, "gRPC connect timeout")
 	flags.Duration(cfgStreamTimeout, defaultStreamTimeout, "gRPC individual message timeout")
 	flags.Duration(cfgReqTimeout, defaultRequestTimeout, "gRPC request timeout")
@ -233,11 +236,9 @@ func settings() *viper.Viper {
 		os.Exit(0)
 	}

-	if v.IsSet(cmdConfig) {
-		if err := readConfig(v); err != nil {
+	if err := readInConfig(v); err != nil {
 		panic(err)
 	}
-	}

 	if peers != nil && len(*peers) > 0 {
 		for i := range *peers {
@ -250,17 +251,72 @@ func settings() *viper.Viper {
 	return v
 }

-func readConfig(v *viper.Viper) error {
-	cfgFileName := v.GetString(cmdConfig)
-	cfgFile, err := os.Open(cfgFileName)
+func readInConfig(v *viper.Viper) error {
+	if v.IsSet(cmdConfig) {
+		if err := readConfig(v); err != nil {
+			return err
+		}
+	}
+
+	if v.IsSet(cmdConfigDir) {
+		if err := readConfigDir(v); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func readConfigDir(v *viper.Viper) error {
+	cfgSubConfigDir := v.GetString(cmdConfigDir)
+	entries, err := os.ReadDir(cfgSubConfigDir)
 	if err != nil {
 		return err
 	}
-	if err = v.ReadConfig(cfgFile); err != nil {
+
+	for _, entry := range entries {
+		if entry.IsDir() {
+			continue
+		}
+		ext := path.Ext(entry.Name())
+		if ext != ".yaml" && ext != ".yml" {
+			continue
+		}
+
+		if err = mergeConfig(v, path.Join(cfgSubConfigDir, entry.Name())); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func readConfig(v *viper.Viper) error {
+	for _, fileName := range v.GetStringSlice(cmdConfig) {
+		if err := mergeConfig(v, fileName); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func mergeConfig(v *viper.Viper, fileName string) error {
+	cfgFile, err := os.Open(fileName)
+	if err != nil {
 		return err
 	}

-	return cfgFile.Close()
+	defer func() {
+		if errClose := cfgFile.Close(); errClose != nil {
+			panic(errClose)
+		}
+	}()
+
+	if err = v.MergeConfig(cfgFile); err != nil {
+		return err
+	}
+
+	return nil
 }

 // newLogger constructs a zap.Logger instance for current application.
--- a/tokens/bearer-token.go
+++ b/tokens/bearer-token.go
@ -7,7 +7,7 @@ import (
 	"errors"
 	"fmt"

-	"github.com/TrueCloudLab/frostfs-sdk-go/bearer"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/bearer"
 	"github.com/valyala/fasthttp"
 )

--- a/tokens/bearer-token_test.go
+++ b/tokens/bearer-token_test.go
@ -1,11 +1,13 @@
+//go:build !integration
+
 package tokens

 import (
 	"encoding/base64"
 	"testing"

-	"github.com/TrueCloudLab/frostfs-sdk-go/bearer"
-	"github.com/TrueCloudLab/frostfs-sdk-go/user"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/bearer"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
 	"github.com/stretchr/testify/require"
 	"github.com/valyala/fasthttp"
--- a/uploader/filter.go
+++ b/uploader/filter.go
@ -3,29 +3,12 @@ package uploader
 import (
 	"bytes"
 	"fmt"
-	"math"
-	"strconv"
-	"time"

-	"github.com/TrueCloudLab/frostfs-api-go/v2/object"
-	"github.com/TrueCloudLab/frostfs-http-gw/utils"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
 	"github.com/valyala/fasthttp"
 	"go.uber.org/zap"
 )

-var frostfsAttributeHeaderPrefixes = [...][]byte{[]byte("Neofs-"), []byte("NEOFS-"), []byte("neofs-")}
-
-func systemTranslator(key, prefix []byte) []byte {
-	// replace the specified prefix with `__NEOFS__`
-	key = bytes.Replace(key, prefix, []byte(utils.SystemAttributePrefix), 1)
-
-	// replace `-` with `_`
-	key = bytes.ReplaceAll(key, []byte("-"), []byte("_"))
-
-	// replace with uppercase
-	return bytes.ToUpper(key)
-}
-
 func filterHeaders(l *zap.Logger, header *fasthttp.RequestHeader) (map[string]string, error) {
 	var err error
 	result := make(map[string]string)
@ -45,13 +28,7 @@ func filterHeaders(l *zap.Logger, header *fasthttp.RequestHeader) (map[string]st
 		// removing attribute prefix
 		clearKey := bytes.TrimPrefix(key, prefix)

-		// checks that it's a system NeoFS header
-		for _, system := range frostfsAttributeHeaderPrefixes {
-			if bytes.HasPrefix(clearKey, system) {
-				clearKey = systemTranslator(clearKey, system)
-				break
-			}
-		}
+		clearKey = utils.TransformIfSystem(clearKey)

 		// checks that the attribute key is not empty
 		if len(clearKey) == 0 {
@ -77,69 +54,3 @@ func filterHeaders(l *zap.Logger, header *fasthttp.RequestHeader) (map[string]st

 	return result, err
 }
-
-func prepareExpirationHeader(headers map[string]string, epochDurations *epochDurations, now time.Time) error {
-	expirationInEpoch := headers[object.SysAttributeExpEpoch]
-
-	if timeRFC3339, ok := headers[utils.ExpirationRFC3339Attr]; ok {
-		expTime, err := time.Parse(time.RFC3339, timeRFC3339)
-		if err != nil {
-			return fmt.Errorf("couldn't parse value %s of header %s", timeRFC3339, utils.ExpirationRFC3339Attr)
-		}
-
-		if expTime.Before(now) {
-			return fmt.Errorf("value %s of header %s must be in the future", timeRFC3339, utils.ExpirationRFC3339Attr)
-		}
-		updateExpirationHeader(headers, epochDurations, expTime.Sub(now))
-		delete(headers, utils.ExpirationRFC3339Attr)
-	}
-
-	if timestamp, ok := headers[utils.ExpirationTimestampAttr]; ok {
-		value, err := strconv.ParseInt(timestamp, 10, 64)
-		if err != nil {
-			return fmt.Errorf("couldn't parse value %s of header %s", timestamp, utils.ExpirationTimestampAttr)
-		}
-		expTime := time.Unix(value, 0)
-
-		if expTime.Before(now) {
-			return fmt.Errorf("value %s of header %s must be in the future", timestamp, utils.ExpirationTimestampAttr)
-		}
-		updateExpirationHeader(headers, epochDurations, expTime.Sub(now))
-		delete(headers, utils.ExpirationTimestampAttr)
-	}
-
-	if duration, ok := headers[utils.ExpirationDurationAttr]; ok {
-		expDuration, err := time.ParseDuration(duration)
-		if err != nil {
-			return fmt.Errorf("couldn't parse value %s of header %s", duration, utils.ExpirationDurationAttr)
-		}
-		if expDuration <= 0 {
-			return fmt.Errorf("value %s of header %s must be positive", expDuration, utils.ExpirationDurationAttr)
-		}
-		updateExpirationHeader(headers, epochDurations, expDuration)
-		delete(headers, utils.ExpirationDurationAttr)
-	}
-
-	if expirationInEpoch != "" {
-		headers[object.SysAttributeExpEpoch] = expirationInEpoch
-	}
-
-	return nil
-}
-
-func updateExpirationHeader(headers map[string]string, durations *epochDurations, expDuration time.Duration) {
-	epochDuration := uint64(durations.msPerBlock) * durations.blockPerEpoch
-	currentEpoch := durations.currentEpoch
-	numEpoch := uint64(expDuration.Milliseconds()) / epochDuration
-
-	if uint64(expDuration.Milliseconds())%epochDuration != 0 {
-		numEpoch++
-	}
-
-	expirationEpoch := uint64(math.MaxUint64)
-	if numEpoch < math.MaxUint64-currentEpoch {
-		expirationEpoch = currentEpoch + numEpoch
-	}
-
-	headers[object.SysAttributeExpEpoch] = strconv.FormatUint(expirationEpoch, 10)
-}
--- a/uploader/filter_test.go
+++ b/uploader/filter_test.go
@ -1,13 +1,10 @@
+//go:build !integration
+
 package uploader

 import (
-	"math"
-	"strconv"
 	"testing"
-	"time"

-	"github.com/TrueCloudLab/frostfs-api-go/v2/object"
-	"github.com/TrueCloudLab/frostfs-http-gw/utils"
 	"github.com/stretchr/testify/require"
 	"github.com/valyala/fasthttp"
 	"go.uber.org/zap"
@ -28,8 +25,8 @@ func TestFilter(t *testing.T) {
 	t.Run("duplicate system keys error", func(t *testing.T) {
 		req := &fasthttp.RequestHeader{}
 		req.DisableNormalizing()
-		req.Add("X-Attribute-Neofs-DupKey", "first-value")
-		req.Add("X-Attribute-Neofs-DupKey", "second-value")
+		req.Add("X-Attribute-System-DupKey", "first-value")
+		req.Add("X-Attribute-System-DupKey", "second-value")
 		_, err := filterHeaders(log, req)
 		require.Error(t, err)
 	})
@ -37,16 +34,16 @@ func TestFilter(t *testing.T) {
 	req := &fasthttp.RequestHeader{}
 	req.DisableNormalizing()

-	req.Set("X-Attribute-Neofs-Expiration-Epoch1", "101")
-	req.Set("X-Attribute-NEOFS-Expiration-Epoch2", "102")
-	req.Set("X-Attribute-neofs-Expiration-Epoch3", "103")
+	req.Set("X-Attribute-System-Expiration-Epoch1", "101")
+	req.Set("X-Attribute-SYSTEM-Expiration-Epoch2", "102")
+	req.Set("X-Attribute-system-Expiration-Epoch3", "103")
 	req.Set("X-Attribute-MyAttribute", "value")

 	expected := map[string]string{
-		"__NEOFS__EXPIRATION_EPOCH1": "101",
+		"__SYSTEM__EXPIRATION_EPOCH1": "101",
 		"MyAttribute":                 "value",
-		"__NEOFS__EXPIRATION_EPOCH3": "103",
-		"__NEOFS__EXPIRATION_EPOCH2": "102",
+		"__SYSTEM__EXPIRATION_EPOCH3": "103",
+		"__SYSTEM__EXPIRATION_EPOCH2": "102",
 	}

 	result, err := filterHeaders(log, req)
@ -54,157 +51,3 @@ func TestFilter(t *testing.T) {

 	require.Equal(t, expected, result)
 }
-
-func TestPrepareExpirationHeader(t *testing.T) {
-	tomorrow := time.Now().Add(24 * time.Hour)
-	tomorrowUnix := tomorrow.Unix()
-	tomorrowUnixNano := tomorrow.UnixNano()
-	tomorrowUnixMilli := tomorrowUnixNano / 1e6
-
-	epoch := "100"
-	duration := "24h"
-	timestampSec := strconv.FormatInt(tomorrowUnix, 10)
-	timestampMilli := strconv.FormatInt(tomorrowUnixMilli, 10)
-	timestampNano := strconv.FormatInt(tomorrowUnixNano, 10)
-
-	defaultDurations := &epochDurations{
-		currentEpoch:  10,
-		msPerBlock:    1000,
-		blockPerEpoch: 101,
-	}
-
-	msPerBlock := defaultDurations.blockPerEpoch * uint64(defaultDurations.msPerBlock)
-	epochPerDay := uint64((24 * time.Hour).Milliseconds()) / msPerBlock
-	if uint64((24*time.Hour).Milliseconds())%msPerBlock != 0 {
-		epochPerDay++
-	}
-
-	defaultExpEpoch := strconv.FormatUint(defaultDurations.currentEpoch+epochPerDay, 10)
-
-	for _, tc := range []struct {
-		name      string
-		headers   map[string]string
-		durations *epochDurations
-		err       bool
-		expected  map[string]string
-	}{
-		{
-			name:     "valid epoch",
-			headers:  map[string]string{object.SysAttributeExpEpoch: epoch},
-			expected: map[string]string{object.SysAttributeExpEpoch: epoch},
-		},
-		{
-			name: "valid epoch, valid duration",
-			headers: map[string]string{
-				object.SysAttributeExpEpoch:  epoch,
-				utils.ExpirationDurationAttr: duration,
-			},
-			durations: defaultDurations,
-			expected:  map[string]string{object.SysAttributeExpEpoch: epoch},
-		},
-		{
-			name: "valid epoch, valid rfc3339",
-			headers: map[string]string{
-				object.SysAttributeExpEpoch: epoch,
-				utils.ExpirationRFC3339Attr: tomorrow.Format(time.RFC3339),
-			},
-			durations: defaultDurations,
-			expected:  map[string]string{object.SysAttributeExpEpoch: epoch},
-		},
-		{
-			name: "valid epoch, valid timestamp sec",
-			headers: map[string]string{
-				object.SysAttributeExpEpoch:   epoch,
-				utils.ExpirationTimestampAttr: timestampSec,
-			},
-			durations: defaultDurations,
-			expected:  map[string]string{object.SysAttributeExpEpoch: epoch},
-		},
-		{
-			name: "valid epoch, valid timestamp milli",
-			headers: map[string]string{
-				object.SysAttributeExpEpoch:   epoch,
-				utils.ExpirationTimestampAttr: timestampMilli,
-			},
-			durations: defaultDurations,
-			expected:  map[string]string{object.SysAttributeExpEpoch: epoch},
-		},
-		{
-			name: "valid epoch, valid timestamp nano",
-			headers: map[string]string{
-				object.SysAttributeExpEpoch:   epoch,
-				utils.ExpirationTimestampAttr: timestampNano,
-			},
-			durations: defaultDurations,
-			expected:  map[string]string{object.SysAttributeExpEpoch: epoch},
-		},
-		{
-			name:      "valid timestamp sec",
-			headers:   map[string]string{utils.ExpirationTimestampAttr: timestampSec},
-			durations: defaultDurations,
-			expected:  map[string]string{object.SysAttributeExpEpoch: defaultExpEpoch},
-		},
-		{
-			name:      "valid duration",
-			headers:   map[string]string{utils.ExpirationDurationAttr: duration},
-			durations: defaultDurations,
-			expected:  map[string]string{object.SysAttributeExpEpoch: defaultExpEpoch},
-		},
-		{
-			name:      "valid rfc3339",
-			headers:   map[string]string{utils.ExpirationRFC3339Attr: tomorrow.Format(time.RFC3339)},
-			durations: defaultDurations,
-			expected:  map[string]string{object.SysAttributeExpEpoch: defaultExpEpoch},
-		},
-		{
-			name:    "valid max uint 64",
-			headers: map[string]string{utils.ExpirationRFC3339Attr: tomorrow.Format(time.RFC3339)},
-			durations: &epochDurations{
-				currentEpoch:  math.MaxUint64 - 1,
-				msPerBlock:    defaultDurations.msPerBlock,
-				blockPerEpoch: defaultDurations.blockPerEpoch,
-			},
-			expected: map[string]string{object.SysAttributeExpEpoch: strconv.FormatUint(uint64(math.MaxUint64), 10)},
-		},
-		{
-			name:    "invalid timestamp sec",
-			headers: map[string]string{utils.ExpirationTimestampAttr: "abc"},
-			err:     true,
-		},
-		{
-			name:    "invalid timestamp sec zero",
-			headers: map[string]string{utils.ExpirationTimestampAttr: "0"},
-			err:     true,
-		},
-		{
-			name:    "invalid duration",
-			headers: map[string]string{utils.ExpirationDurationAttr: "1d"},
-			err:     true,
-		},
-		{
-			name:    "invalid duration negative",
-			headers: map[string]string{utils.ExpirationDurationAttr: "-5h"},
-			err:     true,
-		},
-		{
-			name:    "invalid rfc3339",
-			headers: map[string]string{utils.ExpirationRFC3339Attr: "abc"},
-			err:     true,
-		},
-		{
-			name:    "invalid rfc3339 zero",
-			headers: map[string]string{utils.ExpirationRFC3339Attr: time.RFC3339},
-			err:     true,
-		},
-	} {
-		t.Run(tc.name, func(t *testing.T) {
-			err := prepareExpirationHeader(tc.headers, tc.durations, time.Now())
-			if tc.err {
-				require.Error(t, err)
-			} else {
-				require.NoError(t, err)
-				require.Equal(t, tc.expected, tc.headers)
-			}
-		})
-	}
-}
--- a/uploader/multipart.go
+++ b/uploader/multipart.go
@ -3,7 +3,7 @@ package uploader
 import (
 	"io"

-	"github.com/TrueCloudLab/frostfs-http-gw/uploader/multipart"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/uploader/multipart"
 	"go.uber.org/zap"
 )

@ -16,7 +16,8 @@ type MultipartFile interface {

 func fetchMultipartFile(l *zap.Logger, r io.Reader, boundary string) (MultipartFile, error) {
 	// To have a custom buffer (3mb) the custom multipart reader is used.
-	// https://github.com/nspcc-dev/neofs-http-gw/issues/148
+	// Default reader uses 4KiB chunks, which slow down upload speed up to 400%
+	// https://github.com/golang/go/blob/91b9915d3f6f8cd2e9e9fda63f67772803adfa03/src/mime/multipart/multipart.go#L32
 	reader := multipart.NewReader(r, boundary)

 	for {
--- a/uploader/multipart_test.go
+++ b/uploader/multipart_test.go
@ -1,3 +1,5 @@
+//go:build !integration
+
 package uploader

 import (
--- a/uploader/upload.go
+++ b/uploader/upload.go
@ -3,21 +3,20 @@ package uploader
 import (
 	"context"
 	"encoding/json"
-	"fmt"
 	"io"
 	"net/http"
 	"strconv"
 	"time"

-	"github.com/TrueCloudLab/frostfs-http-gw/resolver"
-	"github.com/TrueCloudLab/frostfs-http-gw/response"
-	"github.com/TrueCloudLab/frostfs-http-gw/tokens"
-	"github.com/TrueCloudLab/frostfs-http-gw/utils"
-	"github.com/TrueCloudLab/frostfs-sdk-go/bearer"
-	"github.com/TrueCloudLab/frostfs-sdk-go/object"
-	oid "github.com/TrueCloudLab/frostfs-sdk-go/object/id"
-	"github.com/TrueCloudLab/frostfs-sdk-go/pool"
-	"github.com/TrueCloudLab/frostfs-sdk-go/user"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/resolver"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/response"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/tokens"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/bearer"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
 	"github.com/valyala/fasthttp"
 	"go.uber.org/atomic"
 	"go.uber.org/zap"
@ -38,12 +37,6 @@ type Uploader struct {
 	containerResolver *resolver.ContainerResolver
 }

-type epochDurations struct {
-	currentEpoch  uint64
-	msPerBlock    int64
-	blockPerEpoch uint64
-}
-
 // Settings stores reloading parameters, so it has to provide atomic getters and setters.
 type Settings struct {
 	defaultTimestamp atomic.Bool
@ -120,13 +113,6 @@ func (u *Uploader) Upload(c *fasthttp.RequestCtx) {
 		response.Error(c, err.Error(), fasthttp.StatusBadRequest)
 		return
 	}
-	if needParseExpiration(filtered) {
-		epochDuration, err := getEpochDurations(c, u.pool)
-		if err != nil {
-			log.Error("could not get epoch durations from network info", zap.Error(err))
-			response.Error(c, "could not get epoch durations from network info: "+err.Error(), fasthttp.StatusBadRequest)
-			return
-		}

 	now := time.Now()
 	if rawHeader := c.Request.Header.Peek(fasthttp.HeaderDate); rawHeader != nil {
@ -137,12 +123,11 @@ func (u *Uploader) Upload(c *fasthttp.RequestCtx) {
 		}
 	}

-		if err = prepareExpirationHeader(filtered, epochDuration, now); err != nil {
-			log.Error("could not parse expiration header", zap.Error(err))
-			response.Error(c, "could not parse expiration header: "+err.Error(), fasthttp.StatusBadRequest)
+	if err = utils.PrepareExpirationHeader(c, u.pool, filtered, now); err != nil {
+		log.Error("could not prepare expiration header", zap.Error(err))
+		response.Error(c, "could not prepare expiration header: "+err.Error(), fasthttp.StatusBadRequest)
 		return
 	}
-	}

 	attributes := make([]object.Attribute, 0, len(filtered))
 	// prepares attributes from filtered headers
@ -182,8 +167,7 @@ func (u *Uploader) Upload(c *fasthttp.RequestCtx) {
 	}

 	if idObj, err = u.pool.PutObject(u.appCtx, prm); err != nil {
-		log.Error("could not store file in frostfs", zap.Error(err))
-		response.Error(c, "could not store file in frostfs: "+err.Error(), fasthttp.StatusBadRequest)
+		u.handlePutFrostFSErr(c, err)
 		return
 	}

@ -214,6 +198,14 @@ func (u *Uploader) Upload(c *fasthttp.RequestCtx) {
 	c.Response.Header.SetContentType(jsonHeader)
 }

+func (u *Uploader) handlePutFrostFSErr(r *fasthttp.RequestCtx, err error) {
+	statusCode, msg, additionalFields := response.FormErrorResponse("could not store file in frostfs", err)
+	logFields := append([]zap.Field{zap.Error(err)}, additionalFields...)
+
+	u.log.Error("could not store file in frostfs", logFields...)
+	response.Error(r, msg, statusCode)
+}
+
 func (u *Uploader) fetchOwnerAndBearerToken(ctx context.Context) (*user.ID, *bearer.Token) {
 	if tkn, err := tokens.LoadBearerToken(ctx); err == nil && tkn != nil {
 		issuer := bearer.ResolveIssuer(*tkn)
@ -239,28 +231,3 @@ func (pr *putResponse) encode(w io.Writer) error {
 	enc.SetIndent("", "\t")
 	return enc.Encode(pr)
 }
-
-func getEpochDurations(ctx context.Context, p *pool.Pool) (*epochDurations, error) {
-	networkInfo, err := p.NetworkInfo(ctx)
-	if err != nil {
-		return nil, err
-	}
-
-	res := &epochDurations{
-		currentEpoch:  networkInfo.CurrentEpoch(),
-		msPerBlock:    networkInfo.MsPerBlock(),
-		blockPerEpoch: networkInfo.EpochDuration(),
-	}
-
-	if res.blockPerEpoch == 0 {
-		return nil, fmt.Errorf("EpochDuration is empty")
-	}
-	return res, nil
-}
-
-func needParseExpiration(headers map[string]string) bool {
-	_, ok1 := headers[utils.ExpirationDurationAttr]
-	_, ok2 := headers[utils.ExpirationRFC3339Attr]
-	_, ok3 := headers[utils.ExpirationTimestampAttr]
-	return ok1 || ok2 || ok3
-}
--- a/utils/attributes.go
+++ b/utils/attributes.go
@ -1,10 +1,250 @@
 package utils

+import (
+	"bytes"
+	"context"
+	"errors"
+	"fmt"
+	"math"
+	"strconv"
+	"strings"
+	"time"
+	"unicode"
+	"unicode/utf8"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
+)
+
 const (
 	UserAttributeHeaderPrefix = "X-Attribute-"
-	SystemAttributePrefix     = "__NEOFS__"
-
-	ExpirationDurationAttr  = SystemAttributePrefix + "EXPIRATION_DURATION"
-	ExpirationTimestampAttr = SystemAttributePrefix + "EXPIRATION_TIMESTAMP"
-	ExpirationRFC3339Attr   = SystemAttributePrefix + "EXPIRATION_RFC3339"
 )
+
+const (
+	systemAttributePrefix = "__SYSTEM__"
+
+	// deprecated: use systemAttributePrefix
+	systemAttributePrefixNeoFS = "__NEOFS__"
+)
+
+type systemTransformer struct {
+	prefix         string
+	backwardPrefix string
+	xAttrPrefixes  [][]byte
+}
+
+var transformers = []systemTransformer{
+	{
+		prefix:         systemAttributePrefix,
+		backwardPrefix: "System-",
+		xAttrPrefixes:  [][]byte{[]byte("System-"), []byte("SYSTEM-"), []byte("system-")},
+	},
+	{
+		prefix:         systemAttributePrefixNeoFS,
+		backwardPrefix: "Neofs-",
+		xAttrPrefixes:  [][]byte{[]byte("Neofs-"), []byte("NEOFS-"), []byte("neofs-")},
+	},
+}
+
+func (t systemTransformer) existsExpirationAttributes(headers map[string]string) bool {
+	_, ok0 := headers[t.expirationEpochAttr()]
+	_, ok1 := headers[t.expirationDurationAttr()]
+	_, ok2 := headers[t.expirationTimestampAttr()]
+	_, ok3 := headers[t.expirationRFC3339Attr()]
+	return ok0 || ok1 || ok2 || ok3
+}
+
+func (t systemTransformer) expirationEpochAttr() string {
+	return t.prefix + "EXPIRATION_EPOCH"
+}
+
+func (t systemTransformer) expirationDurationAttr() string {
+	return t.prefix + "EXPIRATION_DURATION"
+}
+
+func (t systemTransformer) expirationTimestampAttr() string {
+	return t.prefix + "EXPIRATION_TIMESTAMP"
+}
+
+func (t systemTransformer) expirationRFC3339Attr() string {
+	return t.prefix + "EXPIRATION_RFC3339"
+}
+
+func (t systemTransformer) systemTranslator(key, prefix []byte) []byte {
+	// replace the specified prefix with system prefix
+	key = bytes.Replace(key, prefix, []byte(t.prefix), 1)
+
+	// replace `-` with `_`
+	key = bytes.ReplaceAll(key, []byte("-"), []byte("_"))
+
+	// replace with uppercase
+	return bytes.ToUpper(key)
+}
+
+func (t systemTransformer) transformIfSystem(key []byte) ([]byte, bool) {
+	// checks that it's a system FrostFS header
+	for _, system := range t.xAttrPrefixes {
+		if bytes.HasPrefix(key, system) {
+			return t.systemTranslator(key, system), true
+		}
+	}
+
+	return key, false
+}
+
+// systemBackwardTranslator is used to convert headers looking like '__PREFIX__ATTR_NAME' to 'Prefix-Attr-Name'.
+func (t systemTransformer) systemBackwardTranslator(key string) string {
+	// trim specified prefix '__PREFIX__'
+	key = strings.TrimPrefix(key, t.prefix)
+
+	var res strings.Builder
+	res.WriteString(t.backwardPrefix)
+
+	strs := strings.Split(key, "_")
+	for i, s := range strs {
+		s = title(strings.ToLower(s))
+		res.WriteString(s)
+		if i != len(strs)-1 {
+			res.WriteString("-")
+		}
+	}
+
+	return res.String()
+}
+
+func (t systemTransformer) backwardTransformIfSystem(key string) (string, bool) {
+	if strings.HasPrefix(key, t.prefix) {
+		return t.systemBackwardTranslator(key), true
+	}
+
+	return key, false
+}
+
+func TransformIfSystem(key []byte) []byte {
+	for _, transformer := range transformers {
+		key, transformed := transformer.transformIfSystem(key)
+		if transformed {
+			return key
+		}
+	}
+
+	return key
+}
+
+func BackwardTransformIfSystem(key string) string {
+	for _, transformer := range transformers {
+		key, transformed := transformer.backwardTransformIfSystem(key)
+		if transformed {
+			return key
+		}
+	}
+
+	return key
+}
+
+func title(str string) string {
+	if str == "" {
+		return ""
+	}
+
+	r, size := utf8.DecodeRuneInString(str)
+	r0 := unicode.ToTitle(r)
+	return string(r0) + str[size:]
+}
+
+func PrepareExpirationHeader(ctx context.Context, p *pool.Pool, headers map[string]string, now time.Time) error {
+	formatsNum := 0
+	index := -1
+	for i, transformer := range transformers {
+		if transformer.existsExpirationAttributes(headers) {
+			formatsNum++
+			index = i
+		}
+	}
+
+	switch formatsNum {
+	case 0:
+		return nil
+	case 1:
+		epochDuration, err := GetEpochDurations(ctx, p)
+		if err != nil {
+			return fmt.Errorf("couldn't get epoch durations from network info: %w", err)
+		}
+		return transformers[index].prepareExpirationHeader(headers, epochDuration, now)
+	default:
+		return errors.New("both deprecated and new system attributes formats are used, please use only one")
+	}
+}
+
+func (t systemTransformer) prepareExpirationHeader(headers map[string]string, epochDurations *EpochDurations, now time.Time) error {
+	expirationInEpoch := headers[t.expirationEpochAttr()]
+
+	if timeRFC3339, ok := headers[t.expirationRFC3339Attr()]; ok {
+		expTime, err := time.Parse(time.RFC3339, timeRFC3339)
+		if err != nil {
+			return fmt.Errorf("couldn't parse value %s of header %s", timeRFC3339, t.expirationRFC3339Attr())
+		}
+
+		if expTime.Before(now) {
+			return fmt.Errorf("value %s of header %s must be in the future", timeRFC3339, t.expirationRFC3339Attr())
+		}
+		t.updateExpirationHeader(headers, epochDurations, expTime.Sub(now))
+		delete(headers, t.expirationRFC3339Attr())
+	}
+
+	if timestamp, ok := headers[t.expirationTimestampAttr()]; ok {
+		value, err := strconv.ParseInt(timestamp, 10, 64)
+		if err != nil {
+			return fmt.Errorf("couldn't parse value %s of header %s", timestamp, t.expirationTimestampAttr())
+		}
+		expTime := time.Unix(value, 0)
+
+		if expTime.Before(now) {
+			return fmt.Errorf("value %s of header %s must be in the future", timestamp, t.expirationTimestampAttr())
+		}
+		t.updateExpirationHeader(headers, epochDurations, expTime.Sub(now))
+		delete(headers, t.expirationTimestampAttr())
+	}
+
+	if duration, ok := headers[t.expirationDurationAttr()]; ok {
+		expDuration, err := time.ParseDuration(duration)
+		if err != nil {
+			return fmt.Errorf("couldn't parse value %s of header %s", duration, t.expirationDurationAttr())
+		}
+		if expDuration <= 0 {
+			return fmt.Errorf("value %s of header %s must be positive", expDuration, t.expirationDurationAttr())
+		}
+		t.updateExpirationHeader(headers, epochDurations, expDuration)
+		delete(headers, t.expirationDurationAttr())
+	}
+
+	if expirationInEpoch != "" {
+		expEpoch, err := strconv.ParseUint(expirationInEpoch, 10, 64)
+		if err != nil {
+			return fmt.Errorf("parse expiration epoch '%s': %w", expirationInEpoch, err)
+		}
+		if expEpoch < epochDurations.CurrentEpoch {
+			return fmt.Errorf("expiration epoch '%d' must be greater than current epoch '%d'", expEpoch, epochDurations.CurrentEpoch)
+		}
+
+		headers[t.expirationEpochAttr()] = expirationInEpoch
+	}
+
+	return nil
+}
+
+func (t systemTransformer) updateExpirationHeader(headers map[string]string, durations *EpochDurations, expDuration time.Duration) {
+	epochDuration := uint64(durations.MsPerBlock) * durations.BlockPerEpoch
+	currentEpoch := durations.CurrentEpoch
+	numEpoch := uint64(expDuration.Milliseconds()) / epochDuration
+
+	if uint64(expDuration.Milliseconds())%epochDuration != 0 {
+		numEpoch++
+	}
+
+	expirationEpoch := uint64(math.MaxUint64)
+	if numEpoch < math.MaxUint64-currentEpoch {
+		expirationEpoch = currentEpoch + numEpoch
+	}
+
+	headers[t.expirationEpochAttr()] = strconv.FormatUint(expirationEpoch, 10)
+}
--- a/utils/attributes_test.go
+++ b/utils/attributes_test.go
@ -0,0 +1,189 @@
+//go:build !integration
+
+package utils
+
+import (
+	"math"
+	"strconv"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestPrepareExpirationHeader(t *testing.T) {
+	tomorrow := time.Now().Add(24 * time.Hour)
+	tomorrowUnix := tomorrow.Unix()
+	tomorrowUnixNano := tomorrow.UnixNano()
+	tomorrowUnixMilli := tomorrowUnixNano / 1e6
+
+	epoch := "100"
+	duration := "24h"
+	timestampSec := strconv.FormatInt(tomorrowUnix, 10)
+	timestampMilli := strconv.FormatInt(tomorrowUnixMilli, 10)
+	timestampNano := strconv.FormatInt(tomorrowUnixNano, 10)
+
+	defaultDurations := &EpochDurations{
+		CurrentEpoch:  10,
+		MsPerBlock:    1000,
+		BlockPerEpoch: 101,
+	}
+
+	msPerBlock := defaultDurations.BlockPerEpoch * uint64(defaultDurations.MsPerBlock)
+	epochPerDay := uint64((24 * time.Hour).Milliseconds()) / msPerBlock
+	if uint64((24*time.Hour).Milliseconds())%msPerBlock != 0 {
+		epochPerDay++
+	}
+
+	defaultExpEpoch := strconv.FormatUint(defaultDurations.CurrentEpoch+epochPerDay, 10)
+
+	for _, transformer := range transformers {
+		for _, tc := range []struct {
+			name      string
+			headers   map[string]string
+			durations *EpochDurations
+			err       bool
+			expected  map[string]string
+		}{
+			{
+				name:      "valid epoch",
+				headers:   map[string]string{transformer.expirationEpochAttr(): epoch},
+				expected:  map[string]string{transformer.expirationEpochAttr(): epoch},
+				durations: defaultDurations,
+			},
+			{
+				name: "valid epoch, valid duration",
+				headers: map[string]string{
+					transformer.expirationEpochAttr():    epoch,
+					transformer.expirationDurationAttr(): duration,
+				},
+				durations: defaultDurations,
+				expected:  map[string]string{transformer.expirationEpochAttr(): epoch},
+			},
+			{
+				name: "valid epoch, valid rfc3339",
+				headers: map[string]string{
+					transformer.expirationEpochAttr():   epoch,
+					transformer.expirationRFC3339Attr(): tomorrow.Format(time.RFC3339),
+				},
+				durations: defaultDurations,
+				expected:  map[string]string{transformer.expirationEpochAttr(): epoch},
+			},
+			{
+				name: "valid epoch, valid timestamp sec",
+				headers: map[string]string{
+					transformer.expirationEpochAttr():     epoch,
+					transformer.expirationTimestampAttr(): timestampSec,
+				},
+				durations: defaultDurations,
+				expected:  map[string]string{transformer.expirationEpochAttr(): epoch},
+			},
+			{
+				name: "valid epoch, valid timestamp milli",
+				headers: map[string]string{
+					transformer.expirationEpochAttr():     epoch,
+					transformer.expirationTimestampAttr(): timestampMilli,
+				},
+				durations: defaultDurations,
+				expected:  map[string]string{transformer.expirationEpochAttr(): epoch},
+			},
+			{
+				name: "valid epoch, valid timestamp nano",
+				headers: map[string]string{
+					transformer.expirationEpochAttr():     epoch,
+					transformer.expirationTimestampAttr(): timestampNano,
+				},
+				durations: defaultDurations,
+				expected:  map[string]string{transformer.expirationEpochAttr(): epoch},
+			},
+			{
+				name:      "valid timestamp sec",
+				headers:   map[string]string{transformer.expirationTimestampAttr(): timestampSec},
+				durations: defaultDurations,
+				expected:  map[string]string{transformer.expirationEpochAttr(): defaultExpEpoch},
+			},
+			{
+				name:      "valid duration",
+				headers:   map[string]string{transformer.expirationDurationAttr(): duration},
+				durations: defaultDurations,
+				expected:  map[string]string{transformer.expirationEpochAttr(): defaultExpEpoch},
+			},
+			{
+				name:      "valid rfc3339",
+				headers:   map[string]string{transformer.expirationRFC3339Attr(): tomorrow.Format(time.RFC3339)},
+				durations: defaultDurations,
+				expected:  map[string]string{transformer.expirationEpochAttr(): defaultExpEpoch},
+			},
+			{
+				name:    "valid max uint 64",
+				headers: map[string]string{transformer.expirationRFC3339Attr(): tomorrow.Format(time.RFC3339)},
+				durations: &EpochDurations{
+					CurrentEpoch:  math.MaxUint64 - 1,
+					MsPerBlock:    defaultDurations.MsPerBlock,
+					BlockPerEpoch: defaultDurations.BlockPerEpoch,
+				},
+				expected: map[string]string{transformer.expirationEpochAttr(): strconv.FormatUint(uint64(math.MaxUint64), 10)},
+			},
+			{
+				name:    "invalid timestamp sec",
+				headers: map[string]string{transformer.expirationTimestampAttr(): "abc"},
+				err:     true,
+			},
+			{
+				name:    "invalid timestamp sec zero",
+				headers: map[string]string{transformer.expirationTimestampAttr(): "0"},
+				err:     true,
+			},
+			{
+				name:    "invalid duration",
+				headers: map[string]string{transformer.expirationDurationAttr(): "1d"},
+				err:     true,
+			},
+			{
+				name:    "invalid duration negative",
+				headers: map[string]string{transformer.expirationDurationAttr(): "-5h"},
+				err:     true,
+			},
+			{
+				name:    "invalid rfc3339",
+				headers: map[string]string{transformer.expirationRFC3339Attr(): "abc"},
+				err:     true,
+			},
+			{
+				name:    "invalid rfc3339 zero",
+				headers: map[string]string{transformer.expirationRFC3339Attr(): time.RFC3339},
+				err:     true,
+			},
+		} {
+			t.Run(tc.name, func(t *testing.T) {
+				err := transformer.prepareExpirationHeader(tc.headers, tc.durations, time.Now())
+				if tc.err {
+					require.Error(t, err)
+				} else {
+					require.NoError(t, err)
+					require.Equal(t, tc.expected, tc.headers)
+				}
+			})
+		}
+	}
+}
+
+func TestSystemBackwardTranslator(t *testing.T) {
+	input := []string{
+		"__SYSTEM__EXPIRATION_EPOCH",
+		"__SYSTEM__RANDOM_ATTR",
+		"__NEOFS__EXPIRATION_EPOCH",
+		"__NEOFS__RANDOM_ATTR",
+	}
+	expected := []string{
+		"System-Expiration-Epoch",
+		"System-Random-Attr",
+		"Neofs-Expiration-Epoch",
+		"Neofs-Random-Attr",
+	}
+
+	for i, str := range input {
+		res := BackwardTransformIfSystem(str)
+		require.Equal(t, expected[i], res)
+	}
+}
--- a/utils/params.go
+++ b/utils/params.go
@ -1,9 +1,9 @@
 package utils

 import (
-	"github.com/TrueCloudLab/frostfs-http-gw/resolver"
-	"github.com/TrueCloudLab/frostfs-sdk-go/pool"
-	"github.com/TrueCloudLab/frostfs-sdk-go/user"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/resolver"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
 	"go.uber.org/zap"
 )

--- a/utils/util.go
+++ b/utils/util.go
@ -2,9 +2,11 @@ package utils

 import (
 	"context"
+	"fmt"

-	"github.com/TrueCloudLab/frostfs-http-gw/resolver"
-	cid "github.com/TrueCloudLab/frostfs-sdk-go/container/id"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/resolver"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
 )

 // GetContainerID decode container id, if it's not a valid container id
@ -17,3 +19,27 @@ func GetContainerID(ctx context.Context, containerID string, resolver *resolver.
 	}
 	return cnrID, err
 }
+
+type EpochDurations struct {
+	CurrentEpoch  uint64
+	MsPerBlock    int64
+	BlockPerEpoch uint64
+}
+
+func GetEpochDurations(ctx context.Context, p *pool.Pool) (*EpochDurations, error) {
+	networkInfo, err := p.NetworkInfo(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	res := &EpochDurations{
+		CurrentEpoch:  networkInfo.CurrentEpoch(),
+		MsPerBlock:    networkInfo.MsPerBlock(),
+		BlockPerEpoch: networkInfo.EpochDuration(),
+	}
+
+	if res.BlockPerEpoch == 0 {
+		return nil, fmt.Errorf("EpochDuration is empty")
+	}
+	return res, nil
+}
Author	SHA1	Message	Date
Alex Vanin	52be32e4ba	Release v0.27.0 Some checks failed Tests / Lint (pull_request) Failing after 5s Details Tests / Tests (1.18) (pull_request) Failing after 4s Details Builds / Build CLI (pull_request) Has started running Details Tests / Coverage (pull_request) Failing after 10s Details Tests / Tests (1.19) (pull_request) Failing after 6s Details Builds / Build Docker image (pull_request) Has been cancelled Details CodeQL / Analyze (go) (pull_request) Failing after 2s Details CodeQL / Analyze (go) (push) Failing after 2s Details DCO check / Commits Check (pull_request) Failing after 2s Details Signed-off-by: Alex Vanin <a.vanin@yadro.com>	2023-07-12 11:34:00 +03:00
Alex Vanin	4791428b6e	[#61 ] Update api-go version to latest support/v2.15 Some checks failed Tests / Lint (pull_request) Has been cancelled Details Tests / Coverage (pull_request) Has been cancelled Details Tests / Tests (1.18) (pull_request) Has been cancelled Details Tests / Tests (1.19) (pull_request) Has been cancelled Details Builds / Build CLI (pull_request) Has been cancelled Details Builds / Build Docker image (pull_request) Has been cancelled Details CodeQL / Analyze (go) (pull_request) Failing after 31s Details DCO check / Commits Check (pull_request) Failing after 32s Details CodeQL / Analyze (go) (push) Failing after 52s Details Contains fix for keepalive parameter of RPC client. Signed-off-by: Alex Vanin <a.vanin@yadro.com>	2023-06-19 11:46:18 +03:00
Alex Vanin	2888151e40	[#1 ] Update comments Signed-off-by: Alex Vanin <a.vanin@yadro.com>	2023-05-16 17:41:33 +03:00
Alex Vanin	048c626750	[#1 ] Use FrostFS AIO image in integration test Signed-off-by: Alex Vanin <a.vanin@yadro.com>	2023-05-16 17:41:27 +03:00
Denis Kirillov	168b67dc31	[#38 ] Enabling gate metrics Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>	2023-04-26 09:53:36 +03:00
Denis Kirillov	959213520e	[#32 ] Update health metric values Now values are: 0 - undefined 1 - starting 2 - ready 3 - shutting down Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>	2023-04-17 16:28:27 +03:00
Denis Kirillov	162738e771	[#27 ] Update SDK to fix handling request canceling Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>	2023-03-30 15:59:33 +03:00
Denis Kirillov	7c16ffa250	[#26 ] Fix pre-commit issues Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>	2023-03-24 15:35:42 +03:00
Denis Kirillov	6f35d7198d	[#24 ] Use build tags to run integration tests Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>	2023-03-24 12:27:17 +03:00
Denis Kirillov	81f7168a16	[#22 ] Update CHANGELOG.md Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>	2023-03-24 11:33:48 +03:00
Denis Kirillov	a8ec09e76a	[#22 ] Update system attributes prefix Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>	2023-03-24 11:33:01 +03:00
Egor Funtikov	1f66149316	[#17 ] Add pre-commit config	2023-03-24 08:13:56 +00:00
Liza	e2059a8926	[#21 ] Add bug label Add bug label in the bug report template Signed-off-by: Liza <e.chichindaeva@yadro.com>	2023-03-24 06:23:39 +00:00
Denis Kirillov	53ee124b19	[#18 ] Fix typo in error message Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>	2023-03-22 10:43:34 +03:00
Denis Kirillov	8f6be59e23	[#18 ] Extract error details Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>	2023-03-13 16:14:04 +03:00
Alex Vanin	e02ee50d7b	Rename package name Due to source code relocation from GitHub. Signed-off-by: Alex Vanin <a.vanin@yadro.com>	2023-03-07 17:08:53 +03:00
Denis Kirillov	93ec4c444d	[TrueCloudLab#12] Update CHANGELOG.md Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>	2023-02-06 13:56:55 +03:00
Denis Kirillov	6be8d47d92	[TrueCloudLab#12] Support multiple configs Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>	2023-02-06 13:56:55 +03:00
Denis Kirillov	ed983f8ad0	[TrueCloudLab#11] Update SDK to renew tokens beforehand Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>	2023-02-03 17:01:01 +03:00
Artem Tataurov	5f01abf300	[#8 ] Update neo-go and viper Signed-off-by: Artem Tataurov <a.tataurov@yadro.com>	2023-01-25 15:23:50 +03:00
Denis Kirillov	38aa6db041	[TrueCloudLab#9] Fix tests Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>	2023-01-25 11:24:41 +03:00
Denis Kirillov	5a98df9d2d	[TrueCloudLab#9] Update CHANGELOG.md Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>	2023-01-25 11:24:41 +03:00
Denis Kirillov	361acacf07	[TrueCloudLab#9] Update go version to 1.18 Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>	2023-01-25 11:24:41 +03:00
Denis Kirillov	6909ef5382	[TrueCloudLab#7] Fix tests Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>	2023-01-24 17:09:14 +03:00
Denis Kirillov	148b1aa7f5	[TrueCloudLab#7] Require only one healthy server Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>	2023-01-24 17:09:14 +03:00
Denis Kirillov	7df26d9181	[#6 ] Update SDK Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>	2023-01-10 11:25:14 +03:00
Stanislav Bogatyrev	913644d64a	Change logo Signed-off-by: Stanislav Bogatyrev <s.bogatyrev@yadro.com>	2023-01-09 11:05:04 +03:00
Stanislav Bogatyrev	4c30ff6638	Change logo Signed-off-by: Stanislav Bogatyrev <s.bogatyrev@yadro.com>	2023-01-08 10:37:07 +03:00