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afg: more useful error message #9014

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Jun 4, 2021
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afg: more useful error message #9014

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7 changes: 4 additions & 3 deletions client/finality-grandpa/src/import.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -646,9 +646,10 @@ where
initial_sync: bool,
) -> Result<(), ConsensusError> {
if justification.0 != GRANDPA_ENGINE_ID {
return Err(ConsensusError::ClientImport(
"GRANDPA can only import GRANDPA Justifications.".into(),
));
return Err(ConsensusError::ClientImport(format!(
"Expected GRANDPA Justification, got {}.",
String::from_utf8_lossy(&justification.0)
)));
}

let justification = GrandpaJustification::decode_and_verify_finalizes(
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