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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
Download Patch File Download Diff File Expand all files Collapse all files
substrate/primitives/api/proc-macro/src/impl_runtime_apis.rs
+14 -2
View File
@@ -633,8 +633,11 @@ fn generate_api_impl_for_runtime_api(impls: &[ItemImpl]) -> Result<TokenStream>
/// runtime apis.
fn generate_runtime_api_versions(impls: &[ItemImpl]) -> Result<TokenStream> {
let mut result = Vec::with_capacity(impls.len());
let mut sections = Vec::with_capacity(impls.len());
let mut processed_traits = HashSet::new();
let c = generate_crate_access(HIDDEN_INCLUDES_ID);
for impl_ in impls {
let mut path = extend_with_runtime_decl_path(
extract_impl_trait(&impl_, RequireQualifiedTraitPath::Yes)?.clone(),
@@ -667,12 +670,21 @@ fn generate_runtime_api_versions(impls: &[ItemImpl]) -> Result<TokenStream> {
#( #attrs )*
(#id, #version)
));
}
let c = generate_crate_access(HIDDEN_INCLUDES_ID);
sections.push(quote!(
#( #attrs )*
const _: () = {
// All sections with the same name are going to be merged by concatenation.
#[link_section = "runtime_apis"]
static SECTION_CONTENTS: [u8; 12] = #c::serialize_runtime_api_info(#id, #version);
};
));
}
Ok(quote!(
const RUNTIME_API_VERSIONS: #c::ApisVec = #c::create_apis_vec!([ #( #result ),* ]);
#( #sections )*
))
}