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community[patch]: Better error propagation for neo4jgraph (#17190)

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There are other errors that could happen when refreshing the schema, so
we want to propagate specific errors for more clarity
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Tomaz Bratanic 2024-02-08 04:16:14 +01:00 committed by GitHub
parent d903fa313e
commit 7e4b676d53
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1 changed files with 8 additions and 6 deletions
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libs/community/langchain_community/graphs/neo4j_graph.py
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@ -133,12 +133,14 @@ class Neo4jGraph(GraphStore):
# Set schema # Set schema
try: try:
self.refresh_schema() self.refresh_schema()
except neo4j.exceptions.ClientError: except neo4j.exceptions.ClientError as e:
if e.code == "Neo.ClientError.Procedure.ProcedureNotFound":
raise ValueError( raise ValueError(
"Could not use APOC procedures. " "Could not use APOC procedures. "
"Please ensure the APOC plugin is installed in Neo4j and that " "Please ensure the APOC plugin is installed in Neo4j and that "
"'apoc.meta.data()' is allowed in Neo4j configuration " "'apoc.meta.data()' is allowed in Neo4j configuration "
) )
raise e
@property @property
def get_schema(self) -> str: def get_schema(self) -> str: