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-- Deploy sandbox_insert_update
-- requires: sandboxes
-- requires: goiardi_schema
BEGIN;
CREATE OR REPLACE FUNCTION goiardi.merge_sandboxes(m_sbox_id varchar(32), m_creation_time timestamp with time zone, m_checksums bytea, m_completed boolean) RETURNS VOID AS
$$
BEGIN
LOOP
-- first try to update the key
UPDATE goiardi.sandboxes SET checksums = m_checksums, completed = m_completed WHERE sbox_id = m_sbox_id;
IF found THEN
RETURN;
END IF;
-- not there, so try to insert the key
-- if someone else inserts the same key concurrently,
-- we could get a unique-key failure
BEGIN
INSERT INTO goiardi.sandboxes (sbox_id, creation_time, checksums, completed) VALUES (m_sbox_id, m_creation_time, m_checksums, m_completed);
RETURN;
EXCEPTION WHEN unique_violation THEN
-- Do nothing, and loop to try the UPDATE again.
END;
END LOOP;
END;
$$
LANGUAGE plpgsql;
COMMIT;
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