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Fix light requests handler error handling and logging target #8046

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Fix light requests handler error handling and logging target #8046

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2c629cd
Fix light requests handler error handling and logging target
tomaka Feb 4, 2021
d869cde
Revert service.rs
tomaka Feb 4, 2021
2614d43
Fix unused imports
tomaka Feb 4, 2021
8b85cb3
Some test fix
tomaka Feb 5, 2021
79a846b
Merge remote-tracking branch 'upstream/master' into light-handler-fixes
tomaka Feb 5, 2021
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33 changes: 20 additions & 13 deletions client/network/src/light_client_requests/handler.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -159,6 +159,7 @@ impl<B: Block> LightClientRequestHandler<B> {
request: &schema::v1::light::RemoteCallRequest,
) -> Result<schema::v1::light::Response, HandleRequestError> {
log::trace!(
target: LOG_TARGET,
"Remote call request from {} ({} at {:?}).",
peer, request.method, request.block,
);
Expand All @@ -172,10 +173,11 @@ impl<B: Block> LightClientRequestHandler<B> {
Ok((_, proof)) => proof,
Err(e) => {
log::trace!(
target: LOG_TARGET,
"remote call request from {} ({} at {:?}) failed with: {}",
peer, request.method, request.block, e,
);
StorageProof::empty()
return Err(HandleRequestError::NotFulfillable);
}
};

Expand All @@ -193,11 +195,12 @@ impl<B: Block> LightClientRequestHandler<B> {
request: &schema::v1::light::RemoteReadRequest,
) -> Result<schema::v1::light::Response, HandleRequestError> {
if request.keys.is_empty() {
log::debug!("Invalid remote read request sent by {}.", peer);
log::debug!(target: LOG_TARGET, "Invalid remote read request sent by {}.", peer);
return Err(HandleRequestError::BadRequest("Remote read request without keys."))
}

log::trace!(
target: LOG_TARGET,
"Remote read request from {} ({} at {:?}).",
peer, fmt_keys(request.keys.first(), request.keys.last()), request.block,
);
Expand All @@ -211,10 +214,11 @@ impl<B: Block> LightClientRequestHandler<B> {
Ok(proof) => proof,
Err(error) => {
log::trace!(
target: LOG_TARGET,
"remote read request from {} ({} at {:?}) failed with: {}",
peer, fmt_keys(request.keys.first(), request.keys.last()), request.block, error,
);
StorageProof::empty()
return Err(HandleRequestError::NotFulfillable);
}
};

Expand All @@ -232,11 +236,12 @@ impl<B: Block> LightClientRequestHandler<B> {
request: &schema::v1::light::RemoteReadChildRequest,
) -> Result<schema::v1::light::Response, HandleRequestError> {
if request.keys.is_empty() {
log::debug!("Invalid remote child read request sent by {}.", peer);
log::debug!(target: LOG_TARGET, "Invalid remote child read request sent by {}.", peer);
return Err(HandleRequestError::BadRequest("Remove read child request without keys."))
}

log::trace!(
target: LOG_TARGET,
"Remote read child request from {} ({} {} at {:?}).",
peer,
HexDisplay::from(&request.storage_key),
Expand All @@ -259,14 +264,15 @@ impl<B: Block> LightClientRequestHandler<B> {
Ok(proof) => proof,
Err(error) => {
log::trace!(
target: LOG_TARGET,
"remote read child request from {} ({} {} at {:?}) failed with: {}",
peer,
HexDisplay::from(&request.storage_key),
fmt_keys(request.keys.first(), request.keys.last()),
request.block,
error,
);
StorageProof::empty()
return Err(HandleRequestError::NotFulfillable);
}
};

Expand All @@ -283,17 +289,18 @@ impl<B: Block> LightClientRequestHandler<B> {
peer: &PeerId,
request: &schema::v1::light::RemoteHeaderRequest,
) -> Result<schema::v1::light::Response, HandleRequestError> {
log::trace!("Remote header proof request from {} ({:?}).", peer, request.block);
log::trace!(target: LOG_TARGET, "Remote header proof request from {} ({:?}).", peer, request.block);

let block = Decode::decode(&mut request.block.as_ref())?;
let (header, proof) = match self.client.header_proof(&BlockId::Number(block)) {
Ok((header, proof)) => (header.encode(), proof),
Err(error) => {
log::trace!(
target: LOG_TARGET,
"Remote header proof request from {} ({:?}) failed with: {}.",
peer, request.block, error
);
(Default::default(), StorageProof::empty())
return Err(HandleRequestError::NotFulfillable);
}
};

Expand All @@ -311,6 +318,7 @@ impl<B: Block> LightClientRequestHandler<B> {
request: &schema::v1::light::RemoteChangesRequest,
) -> Result<schema::v1::light::Response, HandleRequestError> {
log::trace!(
target: LOG_TARGET,
"Remote changes proof request from {} for key {} ({:?}..{:?}).",
peer,
if !request.storage_key.is_empty() {
Expand All @@ -337,6 +345,7 @@ impl<B: Block> LightClientRequestHandler<B> {
Ok(proof) => proof,
Err(error) => {
log::trace!(
target: LOG_TARGET,
"Remote changes proof request from {} for key {} ({:?}..{:?}) failed with: {}.",
peer,
format!("{} : {}", HexDisplay::from(&request.storage_key), HexDisplay::from(&key.0)),
Expand All @@ -345,12 +354,7 @@ impl<B: Block> LightClientRequestHandler<B> {
error,
);

light::ChangesProof::<B::Header> {
max_block: Zero::zero(),
proof: Vec::new(),
roots: BTreeMap::new(),
roots_proof: StorageProof::empty(),
}
return Err(HandleRequestError::NotFulfillable);
}
};

Expand Down Expand Up @@ -381,6 +385,9 @@ enum HandleRequestError {
/// A bad request has been received.
#[display(fmt = "bad request: {}", _0)]
BadRequest(&'static str),
/// Received request concerns blocks that aren't available, or a similar client-side problem.
#[display(fmt = "Request cannot be fulfilled")]
NotFulfillable,
/// Encoding or decoding of some data failed.
#[display(fmt = "codec error: {}", _0)]
Codec(codec::Error),
Expand Down