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Introduce Metadata type (#974)

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* WIP new Metadata type

* Finish basic Metadata impl inc hashing and validation

* remove caching from metadata; can add that higher up

* remove caches

* update retain to use Metadata

* clippy fixes

* update codegen to use Metadata

* clippy

* WIP fixing subxt lib

* WIP fixing tests, rebuild artifacts, fix OrderedMap::retain

* get --all-targets compiling

* move DispatchError type lookup back to being optional

* cargo clippy

* fix docs

* re-use VariantIndex to get variants

* add docs and enforce docs on metadata crate

* fix docs

* add test and fix docs

* cargo fmt

* address review comments

* update lockfiles

* ExactSizeIter so we can ask for len() of things (and hopefully soon is_empty()
This commit is contained in:
James Wilson
2023-05-25 10:35:21 +01:00
committed by GitHub
parent f344d0dd4d
commit b9f5419095
64 changed files with 6818 additions and 5719 deletions
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cli/src/commands/metadata.rs
+30 -16
View File
@@ -5,10 +5,10 @@
use crate::utils::FileOrUrl;
use clap::Parser as ClapParser;
use codec::{Decode, Encode};
use color_eyre::eyre;
use frame_metadata::{RuntimeMetadata, RuntimeMetadataPrefixed};
use color_eyre::eyre::{self, bail};
use frame_metadata::{v15::RuntimeMetadataV15, RuntimeMetadata, RuntimeMetadataPrefixed};
use std::io::{self, Write};
use subxt_metadata::{metadata_v14_to_latest, retain_metadata};
use subxt_metadata::Metadata;
/// Download metadata from a substrate node, for use with `subxt` codegen.
#[derive(Debug, ClapParser)]
@@ -36,19 +36,19 @@ pub struct Opts {
pub async fn run(opts: Opts) -> color_eyre::Result<()> {
let bytes = opts.file_or_url.fetch().await?;
let mut metadata = <RuntimeMetadataPrefixed as Decode>::decode(&mut &bytes[..])?;
let mut metadata = RuntimeMetadataPrefixed::decode(&mut &bytes[..])?;
let version = match &metadata.1 {
RuntimeMetadata::V14(_) => Version::V14,
RuntimeMetadata::V15(_) => Version::V15,
_ => Version::Unknown,
};
if opts.pallets.is_some() || opts.runtime_apis.is_some() {
let mut metadata_v15 = match metadata.1 {
RuntimeMetadata::V14(metadata_v14) => metadata_v14_to_latest(metadata_v14),
RuntimeMetadata::V15(metadata_v15) => metadata_v15,
_ => {
return Err(eyre::eyre!(
"Unsupported metadata version {:?}, expected V14.",
metadata.1
));
}
};
// convert to internal type:
let mut md = Metadata::try_from(metadata)?;
// retain pallets and/or runtime APIs given:
let retain_pallets_fn: Box<dyn Fn(&str) -> bool> = match opts.pallets.as_ref() {
Some(pallets) => Box::new(|name| pallets.iter().any(|p| &**p == name)),
None => Box::new(|_| true),
@@ -57,8 +57,16 @@ pub async fn run(opts: Opts) -> color_eyre::Result<()> {
Some(apis) => Box::new(|name| apis.iter().any(|p| &**p == name)),
None => Box::new(|_| true),
};
retain_metadata(&mut metadata_v15, retain_pallets_fn, retain_runtime_apis_fn);
metadata = metadata_v15.into();
md.retain(retain_pallets_fn, retain_runtime_apis_fn);
// Convert back to wire format, preserving version:
metadata = match version {
Version::V14 => RuntimeMetadataV15::from(md).into(),
Version::V15 => RuntimeMetadataV15::from(md).into(),
Version::Unknown => {
bail!("Unsupported metadata version; V14 or V15 metadata is expected.")
}
}
}
match opts.format.as_str() {
@@ -82,3 +90,9 @@ pub async fn run(opts: Opts) -> color_eyre::Result<()> {
)),
}
}
enum Version {
V14,
V15,
Unknown,
}