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Fetching multiple remote values using single message (#3612)

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* multiple remote values in single message

* keys_str: String ->keys_str: closure
This commit is contained in:
Svyatoslav Nikolsky
2019-09-16 13:30:21 +03:00
committed by GitHub
parent c45a15e559
commit 849e824652
11 changed files with 273 additions and 190 deletions
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substrate/core/client/src/cht.rs
+29 -17
View File
@@ -23,8 +23,6 @@
//! root has. A correct proof implies that the claimed block is identical to the one
//! we discarded.
use std::collections::HashSet;
use hash_db;
use codec::Encode;
use trie;
@@ -105,15 +103,10 @@ pub fn build_proof<Header, Hasher, BlocksI, HashesI>(
let mut storage = InMemoryState::<Hasher>::default().update(transaction);
let trie_storage = storage.as_trie_backend()
.expect("InMemoryState::as_trie_backend always returns Some; qed");
let mut total_proof = HashSet::new();
for block in blocks.into_iter() {
debug_assert_eq!(block_to_cht_number(cht_size, block), Some(cht_num));
let (value, proof) = prove_read_on_trie_backend(trie_storage, &encode_cht_key(block))?;
assert!(value.is_some(), "we have just built trie that includes the value for block");
total_proof.extend(proof);
}
Ok(total_proof.into_iter().collect())
prove_read_on_trie_backend(
trie_storage,
blocks.into_iter().map(|number| encode_cht_key(number)),
).map_err(ClientError::Execution)
}
/// Check CHT-based header proof.
@@ -128,9 +121,21 @@ pub fn check_proof<Header, Hasher>(
Hasher: hash_db::Hasher,
Hasher::Out: Ord,
{
do_check_proof::<Header, Hasher, _>(local_root, local_number, remote_hash, move |local_root, local_cht_key|
read_proof_check::<Hasher>(local_root, remote_proof,
local_cht_key).map_err(|e| ClientError::from(e)))
do_check_proof::<Header, Hasher, _>(
local_root,
local_number,
remote_hash,
move |local_root, local_cht_key|
read_proof_check::<Hasher, _>(
local_root,
remote_proof,
::std::iter::once(local_cht_key),
)
.map(|mut map| map
.remove(local_cht_key)
.expect("checked proof of local_cht_key; qed"))
.map_err(|e| ClientError::from(e)),
)
}
/// Check CHT-based header proof on pre-created proving backend.
@@ -145,9 +150,16 @@ pub fn check_proof_on_proving_backend<Header, Hasher>(
Hasher: hash_db::Hasher,
Hasher::Out: Ord,
{
do_check_proof::<Header, Hasher, _>(local_root, local_number, remote_hash, |_, local_cht_key|
read_proof_check_on_proving_backend::<Hasher>(
proving_backend, local_cht_key).map_err(|e| ClientError::from(e)))
do_check_proof::<Header, Hasher, _>(
local_root,
local_number,
remote_hash,
|_, local_cht_key|
read_proof_check_on_proving_backend::<Hasher>(
proving_backend,
local_cht_key,
).map_err(|e| ClientError::from(e)),
)
}
/// Check CHT-based header proof using passed checker function.