postgres functions to check if node was removed (e.g. a la EIP158) in a range; update backend to use these to retrieve state and storage leafs in single (albeit complex) SELECT query

2020-10-31 15:00:03 -05:00
parent 7c06d4b3a1
commit b128f894c4
3 changed files with 195 additions and 127 deletions
@@ -0,0 +1,37 @@
+-- +goose Up
+-- +goose StatementBegin
+-- returns if a storage node at the provided path was removed in the range > the provided height and <= the provided block hash
+CREATE OR REPLACE FUNCTION was_storage_removed(path BYTEA, height BIGINT, hash VARCHAR(66)) RETURNS BOOLEAN
+AS $$
+  SELECT exists(SELECT *
+					FROM eth.storage_cids
+            INNER JOIN eth.state_cids ON (storage_cids.state_id = state_cids.id)
+            INNER JOIN eth.header_cids ON (state_cids.header_id = header_cids.id)
+					WHERE storage_path = path
+					AND block_number > height
+					AND block_number <= (SELECT block_number
+										FROM eth.header_cids
+										WHERE block_hash = hash)
+					AND storage_cids.node_type = 3);
+$$ LANGUAGE SQL;
+-- +goose StatementEnd
+
+-- +goose StatementBegin
+-- returns if a state node at the provided path was removed in the range > the provided height and <= the provided block hash
+CREATE OR REPLACE FUNCTION was_state_removed(path BYTEA, height BIGINT, hash VARCHAR(66)) RETURNS BOOLEAN
+AS $$
+  SELECT exists(SELECT *
+					FROM eth.state_cids
+            INNER JOIN eth.header_cids ON (state_cids.header_id = header_cids.id)
+					WHERE state_path = path
+					AND block_number > height
+					AND block_number <= (SELECT block_number
+										FROM eth.header_cids
+										WHERE block_hash = hash)
+					AND state_cids.node_type = 3);
+$$ LANGUAGE SQL;
+-- +goose StatementEnd
+
+-- +goose Down
+DROP FUNCTION was_storage_removed;
+DROP FUNCTION was_state_removed;