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Allow both consensus and runtime to limit block building (#1581)

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* Limit block size in runtime,

* Add test for basic authorship.

* Store length of extrinsics instead of computing it.

* Don't rely on note_extrinsic

* Use hashed version of storage and write test.

* Recompile runtime.
This commit is contained in:
Tomasz Drwięga
2019-02-01 13:58:23 +01:00
committed by Gav Wood
parent 381cf26f55
commit ecdd33a367
16 changed files with 170 additions and 44 deletions
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substrate/srml/system/src/lib.rs
+16 -3
View File
@@ -210,6 +210,7 @@ decl_storage! {
pub AccountNonce get(account_nonce): map T::AccountId => T::Index;
ExtrinsicCount: Option<u32>;
AllExtrinsicsLen: Option<u32>;
pub BlockHash get(block_hash) build(|_| vec![(T::BlockNumber::zero(), [69u8; 32])]): map T::BlockNumber => T::Hash;
ExtrinsicData get(extrinsic_data): map u32 => Vec<u8>;
RandomSeed get(random_seed) build(|_| [0u8; 32]): T::Hash;
@@ -283,6 +284,11 @@ impl<T: Trait> Module<T> {
storage::unhashed::get(well_known_keys::EXTRINSIC_INDEX)
}
/// Gets a total length of all executed extrinsics.
pub fn all_extrinsics_len() -> u32 {
<AllExtrinsicsLen<T>>::get().unwrap_or_default()
}
/// Start the execution of a particular block.
pub fn initialise(number: &T::BlockNumber, parent_hash: &T::Hash, txs_root: &T::Hash) {
// populate environment.
@@ -299,6 +305,7 @@ impl<T: Trait> Module<T> {
pub fn finalise() -> T::Header {
<RandomSeed<T>>::kill();
<ExtrinsicCount<T>>::kill();
<AllExtrinsicsLen<T>>::kill();
let number = <Number<T>>::take();
let parent_hash = <ParentHash<T>>::take();
@@ -385,19 +392,25 @@ impl<T: Trait> Module<T> {
/// Note what the extrinsic data of the current extrinsic index is. If this is called, then
/// ensure `derive_extrinsics` is also called before block-building is completed.
///
/// NOTE this function is called only when the block is being constructed locally.
/// `execute_block` doesn't note any extrinsics.
pub fn note_extrinsic(encoded_xt: Vec<u8>) {
<ExtrinsicData<T>>::insert(Self::extrinsic_index().unwrap_or_default(), encoded_xt);
}
/// To be called immediately after an extrinsic has been applied.
pub fn note_applied_extrinsic(r: &Result<(), &'static str>) {
pub fn note_applied_extrinsic(r: &Result<(), &'static str>, encoded_len: u32) {
Self::deposit_event(match r {
Ok(_) => Event::ExtrinsicSuccess,
Err(_) => Event::ExtrinsicFailed,
}.into());
let next_extrinsic_index = Self::extrinsic_index().unwrap_or_default() + 1u32;
let total_length = encoded_len.saturating_add(Self::all_extrinsics_len());
storage::unhashed::put(well_known_keys::EXTRINSIC_INDEX, &next_extrinsic_index);
<AllExtrinsicsLen<T>>::put(&total_length);
}
/// To be called immediately after `note_applied_extrinsic` of the last extrinsic of the block
@@ -500,8 +513,8 @@ mod tests {
System::initialise(&2, &[0u8; 32].into(), &[0u8; 32].into());
System::deposit_event(42u16);
System::note_applied_extrinsic(&Ok(()));
System::note_applied_extrinsic(&Err(""));
System::note_applied_extrinsic(&Ok(()), 0);
System::note_applied_extrinsic(&Err(""), 0);
System::note_finished_extrinsics();
System::deposit_event(3u16);
System::finalise();