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Fixes #41 mq_clear_ must keep the nil message (#43)

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Imbolc 2022-07-13 17:11:37 +03:00 committed by GitHub
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commit 2fdabd9a98
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migrations/20220713122907_fix-clear_all-keep-nil-message.down.sql Normal file
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-- Add down migration script here

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migrations/20220713122907_fix-clear_all-keep-nil-message.up.sql Normal file
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CREATE OR REPLACE FUNCTION mq_clear(channel_names TEXT[])
RETURNS VOID AS $$
BEGIN
WITH deleted_ids AS (
DELETE FROM mq_msgs
WHERE channel_name = ANY(channel_names)
AND id != uuid_nil()
RETURNING id
)
DELETE FROM mq_payloads WHERE id IN (SELECT id FROM deleted_ids);
END;
$$ LANGUAGE plpgsql;
COMMENT ON FUNCTION mq_clear IS
'Deletes all messages with corresponding payloads from a list of channel names';
CREATE OR REPLACE FUNCTION mq_clear_all()
RETURNS VOID AS $$
BEGIN
WITH deleted_ids AS (
DELETE FROM mq_msgs
WHERE id != uuid_nil()
RETURNING id
)
DELETE FROM mq_payloads WHERE id IN (SELECT id FROM deleted_ids);
END;
$$ LANGUAGE plpgsql;
COMMENT ON FUNCTION mq_clear_all IS
'Deletes all messages with corresponding payloads';