def get_canonical_head(self) -> BlockHeader:
"""
Returns the current block header at the head of the chain.
"""
try:
canonical_head_hash = self.db[SchemaV1.make_canonical_head_hash_lookup_key()]
except KeyError:
raise CanonicalHeadNotFound("No canonical head set for this chain")
return self.get_block_header_by_hash(canonical_head_hash)
def get_canonical_head(self):
if not self.exists(CANONICAL_HEAD_HASH_DB_KEY):
raise CanonicalHeadNotFound("No canonical head set for this chain")
return self.get_block_header_by_hash(self.db.get(CANONICAL_HEAD_HASH_DB_KEY))
