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https://github.com/trustgraph-ai/trustgraph.git
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132 lines
3.4 KiB
Python
Executable file
132 lines
3.4 KiB
Python
Executable file
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"""
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Graph embeddings query service. Input is vector, output is list of
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entities. Pinecone implementation.
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"""
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from pinecone import Pinecone, ServerlessSpec
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from pinecone.grpc import PineconeGRPC, GRPCClientConfig
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import uuid
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import os
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from .... schema import GraphEmbeddingsResponse
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from .... schema import Error, Value
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from .... base import GraphEmbeddingsQueryService
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default_ident = "ge-query"
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default_api_key = os.getenv("PINECONE_API_KEY", "not-specified")
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class Processor(GraphEmbeddingsQueryService):
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def __init__(self, **params):
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self.url = params.get("url", None)
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self.api_key = params.get("api_key", default_api_key)
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if self.api_key is None or self.api_key == "not-specified":
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raise RuntimeError("Pinecone API key must be specified")
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if self.url:
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self.pinecone = PineconeGRPC(
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api_key = self.api_key,
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host = self.url
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)
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else:
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self.pinecone = Pinecone(api_key = self.api_key)
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super(Processor, self).__init__(
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**params | {
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"url": self.url,
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"api_key": self.api_key,
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}
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)
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def create_value(self, ent):
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if ent.startswith("http://") or ent.startswith("https://"):
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return Value(value=ent, is_uri=True)
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else:
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return Value(value=ent, is_uri=False)
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async def query_graph_embeddings(self, msg):
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try:
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# Handle zero limit case
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if msg.limit <= 0:
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return []
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entity_set = set()
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entities = []
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for vec in msg.vectors:
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dim = len(vec)
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index_name = (
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"t-" + msg.user + "-" + msg.collection + "-" + str(dim)
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)
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index = self.pinecone.Index(index_name)
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# Heuristic hack, get (2*limit), so that we have more chance
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# of getting (limit) entities
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results = index.query(
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vector=vec,
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top_k=msg.limit * 2,
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include_values=False,
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include_metadata=True
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)
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for r in results.matches:
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ent = r.metadata["entity"]
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# De-dupe entities
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if ent not in entity_set:
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entity_set.add(ent)
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entities.append(ent)
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# Keep adding entities until limit
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if len(entity_set) >= msg.limit: break
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# Keep adding entities until limit
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if len(entity_set) >= msg.limit: break
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ents2 = []
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for ent in entities:
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ents2.append(self.create_value(ent))
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entities = ents2
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return entities
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except Exception as e:
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print(f"Exception: {e}")
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raise e
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@staticmethod
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def add_args(parser):
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GraphEmbeddingsQueryService.add_args(parser)
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parser.add_argument(
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'-a', '--api-key',
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default=default_api_key,
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help='Pinecone API key. (default from PINECONE_API_KEY)'
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)
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parser.add_argument(
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'-u', '--url',
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help='Pinecone URL. If unspecified, serverless is used'
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)
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def run():
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Processor.launch(default_ident, __doc__)
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