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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/api/src/lib.rs
+43
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@@ -613,6 +613,49 @@ pub trait RuntimeApiInfo {
const VERSION: u32;
}
/// The number of bytes required to encode a [`RuntimeApiInfo`].
///
/// 8 bytes for `ID` and 4 bytes for a version.
pub const RUNTIME_API_INFO_SIZE: usize = 12;
/// Crude and simple way to serialize the `RuntimeApiInfo` into a bunch of bytes.
pub const fn serialize_runtime_api_info(id: [u8; 8], version: u32) -> [u8; RUNTIME_API_INFO_SIZE] {
let version = version.to_le_bytes();
let mut r = [0; RUNTIME_API_INFO_SIZE];
r[0] = id[0];
r[1] = id[1];
r[2] = id[2];
r[3] = id[3];
r[4] = id[4];
r[5] = id[5];
r[6] = id[6];
r[7] = id[7];
r[8] = version[0];
r[9] = version[1];
r[10] = version[2];
r[11] = version[3];
r
}
/// Deserialize the runtime API info serialized by [`serialize_runtime_api_info`].
pub fn deserialize_runtime_api_info(bytes: [u8; RUNTIME_API_INFO_SIZE]) -> ([u8; 8], u32) {
use sp_std::convert::TryInto;
let id: [u8; 8] = bytes[0..8]
.try_into()
.expect("the source slice size is equal to the dest array length; qed");
let version = u32::from_le_bytes(
bytes[8..12]
.try_into()
.expect("the source slice size is equal to the array length; qed"),
);
(id, version)
}
#[derive(codec::Encode, codec::Decode)]
pub struct OldRuntimeVersion {
pub spec_name: RuntimeString,