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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/client.rs
+12 -8
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@@ -436,24 +436,28 @@ impl<B, E, Block, RA> Client<B, E, Block, RA> where
}
/// Reads storage value at a given block + key, returning read proof.
pub fn read_proof(&self, id: &BlockId<Block>, key: &[u8]) -> error::Result<Vec<Vec<u8>>> {
pub fn read_proof<I>(&self, id: &BlockId<Block>, keys: I) -> error::Result<Vec<Vec<u8>>> where
I: IntoIterator,
I::Item: AsRef<[u8]>,
{
self.state_at(id)
.and_then(|state| prove_read(state, key)
.map(|(_, proof)| proof)
.and_then(|state| prove_read(state, keys)
.map_err(Into::into))
}
/// Reads child storage value at a given block + storage_key + key, returning
/// read proof.
pub fn read_child_proof(
pub fn read_child_proof<I>(
&self,
id: &BlockId<Block>,
storage_key: &[u8],
key: &[u8]
) -> error::Result<Vec<Vec<u8>>> {
keys: I,
) -> error::Result<Vec<Vec<u8>>> where
I: IntoIterator,
I::Item: AsRef<[u8]>,
{
self.state_at(id)
.and_then(|state| prove_child_read(state, storage_key, key)
.map(|(_, proof)| proof)
.and_then(|state| prove_child_read(state, storage_key, keys)
.map_err(Into::into))
}