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37 lines
1.2 KiB
SQL
37 lines
1.2 KiB
SQL
-- explicit type casting is required because of how statements are prepared on the pgserver
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--name: get-search-bounds
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-- Computes optimum bounds for series generation.
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-- $1: search_batch_size
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-- $2: head_cursor
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-- $3: head_block_lag
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WITH low AS (
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SELECT lower_bound FROM syncer_meta
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)
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SELECT low.lower_bound, LEAST(low.lower_bound::int+$1::int, $2::int -$3::int) AS upper_bound FROM low
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--name: get-missing-blocks
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-- Generates a bounded series and searches for missing blocks.
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-- $1: series_lower_bound
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-- $2: series_upper_bound
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SELECT s.i AS missing_blocks
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FROM generate_series($1::int, $2::int) s(i)
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WHERE NOT EXISTS (SELECT 1 FROM blocks WHERE n = s.i)
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--name: set-search-lower-bound
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-- Updates the search lower bound to keep the query efficient during janitor sweeps.
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-- $1: new_lower_bound
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UPDATE syncer_meta SET lower_bound = $1::int
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--name: init-syncer-meta
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-- If first run, populate syncer_meta table. Safe to run multiple times.
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-- $1: init_lower_bound
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INSERT INTO syncer_meta(lower_bound) SELECT $1::int WHERE NOT EXISTS (
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SELECT lower_bound FROM syncer_meta
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);
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--name: commit-block
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-- All transaction in this block have been processed through the pipleine without error.
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-- $1: block_number
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INSERT INTO blocks(n) VALUES($1::int)
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