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from typing import Any
from neo4j import GraphDatabase
from sleep_db.config import Settings
from sleep_db.rules import load_rules_directory
from sleep_db.schema import ALLOWED_LABELS, ALLOWED_REL_TYPES
def primary_rule_content_node_id(rule: dict[str, Any]) -> str | None:
nodes = rule.get("nodes", [])
for node in nodes:
if node.get("label") == "ConditionGroup":
return node.get("id")
if nodes:
return nodes[0].get("id")
return None
class KnowledgeGraphSync:
def __init__(self, settings: Settings):
self.driver = GraphDatabase.driver(
settings.neo4j_uri,
auth=(settings.neo4j_user, settings.neo4j_password),
)
def close(self) -> None:
self.driver.close()
def create_constraints(self) -> None:
queries = [
"CREATE CONSTRAINT metric_id IF NOT EXISTS FOR (n:Metric) REQUIRE n.id IS UNIQUE",
"CREATE CONSTRAINT condition_id IF NOT EXISTS FOR (n:ThresholdCondition) REQUIRE n.id IS UNIQUE",
"CREATE CONSTRAINT condition_group_id IF NOT EXISTS FOR (n:ConditionGroup) REQUIRE n.id IS UNIQUE",
"CREATE CONSTRAINT state_id IF NOT EXISTS FOR (n:State) REQUIRE n.id IS UNIQUE",
"CREATE CONSTRAINT effect_id IF NOT EXISTS FOR (n:Effect) REQUIRE n.id IS UNIQUE",
"CREATE CONSTRAINT advice_id IF NOT EXISTS FOR (n:Advice) REQUIRE n.id IS UNIQUE",
"CREATE CONSTRAINT activity_id IF NOT EXISTS FOR (n:Activity) REQUIRE n.id IS UNIQUE",
"CREATE CONSTRAINT environment_id IF NOT EXISTS FOR (n:Environment) REQUIRE n.id IS UNIQUE",
"CREATE CONSTRAINT nutrition_id IF NOT EXISTS FOR (n:Nutrition) REQUIRE n.id IS UNIQUE",
"CREATE CONSTRAINT doc_doc_id IF NOT EXISTS FOR (n:Doc) REQUIRE n.doc_id IS UNIQUE",
"CREATE CONSTRAINT rule_version_id IF NOT EXISTS FOR (n:RuleVersion) REQUIRE n.rule_id IS UNIQUE",
]
with self.driver.session() as session:
for query in queries:
session.run(query)
def sync_rules_directory(self, rules_dir) -> dict[str, list[str]]:
self.create_constraints()
current = {rule["id"]: (rule, rule_hash) for rule, rule_hash in load_rules_directory(rules_dir)}
with self.driver.session() as session:
rows = session.run(
"MATCH (rv:RuleVersion) RETURN rv.rule_id AS id, rv.yaml_hash AS hash"
)
existing = {row["id"]: row["hash"] for row in rows}
report = {"added": [], "modified": [], "deleted": [], "unchanged": []}
for rule_id, (rule, rule_hash) in current.items():
if rule_id not in existing:
self.replace_rule(rule, rule_hash)
report["added"].append(rule_id)
elif existing[rule_id] != rule_hash:
self.replace_rule(rule, rule_hash)
report["modified"].append(rule_id)
else:
self.ensure_rule_version_edge(rule)
report["unchanged"].append(rule_id)
for deleted_rule_id in sorted(set(existing) - set(current)):
self.delete_rule(deleted_rule_id)
report["deleted"].append(deleted_rule_id)
return report
def replace_rule(self, rule: dict[str, Any], rule_hash: str) -> None:
self.delete_rule(rule["id"])
self.upsert_rule(rule, rule_hash)
def upsert_rule(self, rule: dict[str, Any], rule_hash: str) -> None:
with self.driver.session() as session:
for doc_id in rule.get("source_doc_ids", []):
session.execute_write(self._merge_doc, doc_id)
for node in rule.get("nodes", []):
props = dict(node.get("properties", {}))
props.update(
{
"name": node.get("name"),
"review_status": rule.get("review_status"),
"confidence": rule.get("confidence"),
"source_doc_ids": rule.get("source_doc_ids", []),
}
)
props = {key: value for key, value in props.items() if value is not None}
session.execute_write(
self._merge_node,
node["label"],
node["id"],
props,
rule["id"],
)
for edge in rule.get("edges", []):
props = dict(edge.get("properties", {}))
props.update(
{
"review_status": rule.get("review_status"),
"confidence": props.get("confidence", rule.get("confidence")),
"source_doc_ids": rule.get("source_doc_ids", []),
}
)
session.execute_write(
self._merge_edge,
edge["from"],
edge["to"],
edge["type"],
props,
rule["id"],
)
for node in rule.get("nodes", []):
for doc_id in rule.get("source_doc_ids", []):
session.execute_write(self._merge_refers_to, node["id"], doc_id, rule["id"])
session.run(
"""
MERGE (rv:RuleVersion {rule_id: $rule_id})
SET rv.version = $version,
rv.yaml_hash = $yaml_hash,
rv.review_status = $review_status,
rv.updated_at = datetime()
""",
rule_id=rule["id"],
version=rule.get("version", 1),
yaml_hash=rule_hash,
review_status=rule.get("review_status"),
)
self._ensure_rule_version_edge(session, rule)
def ensure_rule_version_edge(self, rule: dict[str, Any]) -> None:
with self.driver.session() as session:
self._ensure_rule_version_edge(session, rule)
def _ensure_rule_version_edge(self, session: Any, rule: dict[str, Any]) -> None:
content_node_id = primary_rule_content_node_id(rule)
if not content_node_id:
return
session.execute_write(
self._merge_rule_version_defines,
rule["id"],
content_node_id,
{
"review_status": rule.get("review_status"),
"confidence": rule.get("confidence"),
"source_doc_ids": rule.get("source_doc_ids", []),
},
)
def delete_rule(self, rule_id: str) -> None:
with self.driver.session() as session:
session.run(
"""
MATCH ()-[r]->()
WHERE $rule_id IN coalesce(r.source_rule_ids, []) AND size(r.source_rule_ids) = 1
DELETE r
""",
rule_id=rule_id,
)
session.run(
"""
MATCH ()-[r]->()
WHERE $rule_id IN coalesce(r.source_rule_ids, [])
SET r.source_rule_ids = [id IN r.source_rule_ids WHERE id <> $rule_id]
""",
rule_id=rule_id,
)
session.run(
"""
MATCH (n)
WHERE $rule_id IN coalesce(n.source_rule_ids, [])
SET n.source_rule_ids = [id IN n.source_rule_ids WHERE id <> $rule_id]
""",
rule_id=rule_id,
)
session.run(
"""
MATCH (n)
WHERE n.source_rule_ids = [] AND NOT (n)--()
DELETE n
""",
rule_id=rule_id,
)
session.run(
"MATCH (rv:RuleVersion {rule_id: $rule_id}) DELETE rv",
rule_id=rule_id,
)
@staticmethod
def _merge_doc(tx, doc_id: str) -> None:
tx.run("MERGE (:Doc {doc_id: $doc_id})", doc_id=doc_id)
@staticmethod
def _merge_node(tx, label: str, node_id: str, props: dict[str, Any], rule_id: str) -> None:
if label not in ALLOWED_LABELS:
raise ValueError(f"Unsupported label: {label}")
query = f"""
MERGE (n:{label} {{id: $node_id}})
SET n += $props
SET n.source_rule_ids = CASE
WHEN n.source_rule_ids IS NULL THEN [$rule_id]
WHEN NOT $rule_id IN n.source_rule_ids THEN n.source_rule_ids + $rule_id
ELSE n.source_rule_ids
END
"""
tx.run(query, node_id=node_id, props=props, rule_id=rule_id)
@staticmethod
def _merge_edge(
tx,
from_id: str,
to_id: str,
rel_type: str,
props: dict[str, Any],
rule_id: str,
) -> None:
if rel_type not in ALLOWED_REL_TYPES:
raise ValueError(f"Unsupported relationship type: {rel_type}")
query = f"""
MATCH (a {{id: $from_id}})
MATCH (b {{id: $to_id}})
MERGE (a)-[r:{rel_type}]->(b)
SET r += $props
SET r.source_rule_ids = CASE
WHEN r.source_rule_ids IS NULL THEN [$rule_id]
WHEN NOT $rule_id IN r.source_rule_ids THEN r.source_rule_ids + $rule_id
ELSE r.source_rule_ids
END
"""
tx.run(query, from_id=from_id, to_id=to_id, props=props, rule_id=rule_id)
@staticmethod
def _merge_refers_to(tx, node_id: str, doc_id: str, rule_id: str) -> None:
tx.run(
"""
MATCH (n {id: $node_id})
MATCH (d:Doc {doc_id: $doc_id})
MERGE (n)-[r:REFERS_TO]->(d)
SET r.source_rule_ids = CASE
WHEN r.source_rule_ids IS NULL THEN [$rule_id]
WHEN NOT $rule_id IN r.source_rule_ids THEN r.source_rule_ids + $rule_id
ELSE r.source_rule_ids
END
""",
node_id=node_id,
doc_id=doc_id,
rule_id=rule_id,
)
@staticmethod
def _merge_rule_version_defines(
tx,
rule_id: str,
node_id: str,
props: dict[str, Any],
) -> None:
tx.run(
"""
MATCH (rv:RuleVersion {rule_id: $rule_id})
MATCH (n {id: $node_id})
MERGE (rv)-[r:DEFINES]->(n)
SET r += $props
SET r.source_rule_ids = CASE
WHEN r.source_rule_ids IS NULL THEN [$rule_id]
WHEN NOT $rule_id IN r.source_rule_ids THEN r.source_rule_ids + $rule_id
ELSE r.source_rule_ids
END
""",
rule_id=rule_id,
node_id=node_id,
props=props,
)
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