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Embed runtime version as a custom section (#8688)

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* emit a custom section from impl_runtime_apis!

This change emits a custom section from the impl_runtime_apis! proc macro.

Each implemented API will result to emitting a link section `runtime_apis`.
During linking all sections with this name will be concatenated and
placed into the final wasm binary under the same name.

* Introduce `runtime_version` proc macro

This macro takes an existing `RuntimeVersion` const declaration, parses
it and emits the version information in form of a linking section.
Ultimately such a linking section will result into a custom wasm
section.

* Parse custom wasm section for runtime version

* Apply suggestions from code review

Co-authored-by: David <dvdplm@gmail.com>

* Fix sc-executor integration tests

* Nits

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

* Refactor apis section deserialization

* Fix version decoding

* Reuse uncompressed value for CallInWasm

* Log on decompression error

* Simplify if

* Reexport proc-macro from sp_version

* Merge ReadRuntimeVersionExt

* Export `read_embedded_version`

* Fix test

* Simplify searching for custom section

Co-authored-by: David <dvdplm@gmail.com>
Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>
This commit is contained in:
Sergei Shulepov
2021-05-12 15:39:08 +02:00
committed by GitHub
parent 4f7c1df31e
commit 0849bcce0e
27 changed files with 833 additions and 289 deletions
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substrate/primitives/version/proc-macro/src/lib.rs
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// This file is part of Substrate.
// Copyright (C) 2021 Parity Technologies (UK) Ltd.
// SPDX-License-Identifier: Apache-2.0
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//! A proc-macro that generates a custom wasm section from a given RuntimeVersion declaration
//!
//! This macro is re-exported from the `sp_version::runtime_version` and intended to be used from
//! there. Documentation can also be found there.
#![recursion_limit = "512"]
use proc_macro::TokenStream;
mod decl_runtime_version;
#[proc_macro_attribute]
pub fn runtime_version(_: TokenStream, input: TokenStream) -> TokenStream {
decl_runtime_version::decl_runtime_version_impl(input)
}