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Draft: Split get_storage_at into two paths: one optimistic and simple, the other more comprehensive but slower. (#117)

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* Split get_storage_at into two paths: one optimisic and simple, the other more exhaustive but slower.

* Remove is null check

* Fix name

* Update comment
This commit is contained in:
Thomas E Lackey 2022-11-18 12:32:35 -06:00 committed by i-norden
parent 53461a0996
commit 268a282eac
1 changed files with 97 additions and 30 deletions
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85
db/migrations/00023_get_storage_at_functions.sql
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@ -12,10 +12,76 @@ $$
language sql;
CREATE OR REPLACE FUNCTION public.get_storage_at_by_number(stateLeafKey text, storageLeafKey text, blockNo bigint)
RETURNS TABLE(cid text, mh_key text, block_number bigint, node_type integer, state_leaf_removed bool) LANGUAGE plpgsql
AS $$
RETURNS TABLE
(
cid text,
mh_key text,
block_number bigint,
node_type integer,
state_leaf_removed bool
)
LANGUAGE plpgsql
AS
$$
DECLARE
statePath bytea;
temp_header text;
temp_canonical_header text;
BEGIN
RETURN QUERY SELECT STORAGE_CIDS.CID,
CREATE TEMP TABLE tmp_tt_stg2
(
header_id text,
cid text,
mh_key text,
block_number bigint,
node_type integer,
state_leaf_removed bool
) ON COMMIT DROP;
SELECT state_path, STATE_CIDS.block_number
INTO statePath, blockNo
FROM ETH.STATE_CIDS
WHERE STATE_LEAF_KEY = stateLeafKey
AND STATE_CIDS.BLOCK_NUMBER <= blockNo
ORDER BY STATE_CIDS.BLOCK_NUMBER DESC
LIMIT 1;
INSERT INTO tmp_tt_stg2
SELECT STORAGE_CIDS.HEADER_ID,
STORAGE_CIDS.CID,
STORAGE_CIDS.MH_KEY,
STORAGE_CIDS.BLOCK_NUMBER,
STORAGE_CIDS.NODE_TYPE,
was_state_leaf_removed_by_number(
stateLeafKey,
blockNo
) AS STATE_LEAF_REMOVED
FROM eth.storage_cids
INNER JOIN ETH.STATE_CIDS ON (
STORAGE_CIDS.HEADER_ID = STATE_CIDS.HEADER_ID
AND STORAGE_CIDS.BLOCK_NUMBER = STATE_CIDS.BLOCK_NUMBER
)
WHERE storage_leaf_key = storageLeafKey
AND storage_cids.block_number <= blockNo
AND storage_cids.state_path = statePath
AND state_leaf_key = stateLeafKey
AND storage_cids.block_number <= blockNo
ORDER BY state_cids.block_number DESC
LIMIT 1;
SELECT header_id, canonical_header_hash(tmp_tt_stg2.block_number), tmp_tt_stg2.block_number
into temp_header, temp_canonical_header, blockNo
from tmp_tt_stg2;
IF temp_header IS NOT NULL AND temp_header != temp_canonical_header THEN
raise notice 'get_storage_at_by_number: chosen header % != canonical header % for block number %, trying again.', temp_header, temp_canonical_header, blockNo;
TRUNCATE tmp_tt_stg2;
-- If we chose a non-canonical block, we need to go back and get the right one. While we could do this in one
-- query if we wanted, the disadvantage would be that it is very uncommon, while the join on
-- STORAGE_CIDS.STATE_PATH = STATE_CIDS.STATE_PATH is quite expensive whenever there are a lot of candidate rows,
-- so we wish to avoid that more expensive check when possible.
INSERT INTO tmp_tt_stg2
SELECT STORAGE_CIDS.HEADER_ID,
STORAGE_CIDS.CID,
STORAGE_CIDS.MH_KEY,
STORAGE_CIDS.BLOCK_NUMBER,
STORAGE_CIDS.NODE_TYPE,
@ -28,21 +94,22 @@ BEGIN
STORAGE_CIDS.HEADER_ID = STATE_CIDS.HEADER_ID
AND STORAGE_CIDS.BLOCK_NUMBER = STATE_CIDS.BLOCK_NUMBER
AND STORAGE_CIDS.STATE_PATH = STATE_CIDS.STATE_PATH
AND STORAGE_CIDS.BLOCK_NUMBER <= blockNo
)
INNER JOIN ETH.HEADER_CIDS ON (
STATE_CIDS.HEADER_ID = HEADER_CIDS.BLOCK_HASH
AND STATE_CIDS.BLOCK_NUMBER = HEADER_CIDS.BLOCK_NUMBER
AND STATE_CIDS.BLOCK_NUMBER <= blockNo
)
WHERE STATE_LEAF_KEY = stateLeafKey
AND STATE_CIDS.BLOCK_NUMBER <= blockNo
AND STATE_CIDS.BLOCK_NUMBER = blockNo
AND STORAGE_LEAF_KEY = storageLeafKey
AND STORAGE_CIDS.BLOCK_NUMBER <= blockNo
AND HEADER_CIDS.BLOCK_NUMBER <= blockNo
AND HEADER_CIDS.BLOCK_HASH = (SELECT CANONICAL_HEADER_HASH(HEADER_CIDS.BLOCK_NUMBER))
AND STORAGE_CIDS.BLOCK_NUMBER = blockNo
AND HEADER_CIDS.BLOCK_NUMBER = blockNo
AND HEADER_CIDS.BLOCK_HASH = temp_canonical_header
ORDER BY HEADER_CIDS.BLOCK_NUMBER DESC
LIMIT 1;
END IF;
RETURN QUERY SELECT t.cid, t.mh_key, t.block_number, t.node_type, t.state_leaf_removed from tmp_tt_stg2 as t;
END
$$;