Add graph query API (node/edge/attribute filters and shortest-path search)

[harsh-sikhwal]

• Adds a new query.yaml schema and QueryRequest/QueryResponse message types (node filter, edge filter, attribute filter, shortest-path) to infragraph.proto.
• Implements InfraGraphService.query_graph() with node/edge attribute matching (_match_attrs, _process_node_filter, _process_edge_filter) and shortest-path lookup via networkx.
• Regenerates artifacts/infragraph.proto, artifacts/openapi.yaml, and docs/src/openapi.html from the updated schema.
• Fixes description typos and copy-paste errors in schema/query.yaml.
• Adds test_graph_query.py covering node/edge/attribute/shortest-path queries; updates existing blueprint and translator tests, and strips debug prints from test suites.

Schema:

https://redocly.github.io/redoc/?url=https://raw.githubusercontent.com/Keysight/infragraph/feature-query-graph/artifacts/openapi.yaml&nocors

Example usage

Node attribute filter query

from infragraph import QueryRequest

query = QueryRequest()
query.filter.node_filter.node_identifier = ["dgx_h100"]
query.filter.node_filter.attribute_filter.attributes.add(attribute="cx7_type", value="smart")

query_response = service.query_graph(query)
for node in query_response.nodes:
    print(node.name, {a.attribute: a.value for a in node.attributes})

Graph attribute filter query

query = QueryRequest()
query.filter.graph_filter.attributes.add(attribute="region", value="us-east")

query_response = service.query_graph(query)

Shortest path query

query = QueryRequest()
query.shortest_path.name = "rank0-rank1"
query.shortest_path.source = service.get_endpoints("rank", "0")[0]
query.shortest_path.destination = service.get_endpoints("rank", "1")[0]

query_response = service.query_graph(query)
path = [node.name for node in query_response.nodes]

[ajbalogh]

If there are any schema changes lets add a link in the MR description that points to redocly which allows a user to easily review the openapi.yaml file. The format is the following and just the branch name needs to be replaced (in this case feature-query-graph):
https://redocly.github.io/redoc/?url=https://raw.githubusercontent.com/Keysight/infragraph/feature-query-graph/artifacts/openapi.yaml&nocors

[ajbalogh]

did we decide on an array of filters at the node/edge/graph level?

[harsh-sikhwal]

yes - array of node identifiers having an array of attributes inside - same for edges and for graph filter - just an array of attributes