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add price feed trigger

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This commit is contained in:
Taka Goto 2018-09-12 09:30:40 -05:00
parent 0b987b3261
commit 13b19c0870
3 changed files with 37 additions and 0 deletions
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1
db/migrations/20180911215603_add_price_feed_trigger.down.sql Normal file
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@ -0,0 +1 @@
DROP TRIGGER notify_pricefeeds ON maker.price_feeds;

13
db/migrations/20180911215603_add_price_feed_trigger.up.sql Normal file
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@ -0,0 +1,13 @@
CREATE OR REPLACE FUNCTION notify_pricefeed() RETURNS trigger AS $$
BEGIN
PERFORM pg_notify(
CAST('postgraphile:price_feed' AS text),
row_to_json(NEW)::text);
RETURN NEW;
END;
$$ LANGUAGE plpgsql;
CREATE TRIGGER notify_pricefeeds
AFTER INSERT ON maker.price_feeds
FOR EACH ROW
EXECUTE PROCEDURE notify_pricefeed();

23
db/schema.sql
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@ -36,6 +36,22 @@ CREATE EXTENSION IF NOT EXISTS plpgsql WITH SCHEMA pg_catalog;
COMMENT ON EXTENSION plpgsql IS 'PL/pgSQL procedural language';
--
-- Name: notify_pricefeed(); Type: FUNCTION; Schema: public; Owner: -
--
CREATE FUNCTION public.notify_pricefeed() RETURNS trigger
LANGUAGE plpgsql
AS $$
BEGIN
PERFORM pg_notify(
CAST('postgraphile:price_feed' AS text),
row_to_json(NEW)::text);
RETURN NEW;
END;
$$;
SET default_tablespace = '';
SET default_with_oids = false;
@ -850,6 +866,13 @@ CREATE INDEX tx_from_index ON public.transactions USING btree (tx_from);
CREATE INDEX tx_to_index ON public.transactions USING btree (tx_to);
--
-- Name: price_feeds notify_pricefeeds; Type: TRIGGER; Schema: maker; Owner: -
--
CREATE TRIGGER notify_pricefeeds AFTER INSERT ON maker.price_feeds FOR EACH ROW EXECUTE PROCEDURE public.notify_pricefeed();
--
-- Name: flip_kick flip_kick_header_id_fkey; Type: FK CONSTRAINT; Schema: maker; Owner: -
--