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-- Deploy environment_insert_update
-- requires: environments
-- requires: goiardi_schema
BEGIN;
CREATE OR REPLACE FUNCTION goiardi.merge_environments(m_name text, m_description text, m_default_attr bytea, m_override_attr bytea, m_cookbook_vers bytea) RETURNS VOID AS
$$
BEGIN
LOOP
-- first try to update the key
UPDATE goiardi.environments SET description = m_description, default_attr = m_default_attr, override_attr = m_override_attr, cookbook_vers = m_cookbook_vers, updated_at = NOW() WHERE name = m_name;
IF found THEN
RETURN;
END IF;
-- not there, so try to insert the key
-- if someone else inserts the same key concurrently,
-- we could get a unique-key failure
BEGIN
INSERT INTO goiardi.environments (name, description, default_attr, override_attr, cookbook_vers, created_at, updated_at) VALUES (m_name, m_description, m_default_attr, m_override_attr, m_cookbook_vers, NOW(), NOW());
RETURN;
EXCEPTION WHEN unique_violation THEN
-- Do nothing, and loop to try the UPDATE again.
END;
END LOOP;
END;
$$
LANGUAGE plpgsql;
COMMIT;
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