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-- +migrate Up
CREATE OR REPLACE VIEW on_call_alert_users AS
WITH alert_users AS (
SELECT act.user_id, act.schedule_id, a.id as alert_id, a.status
FROM
alerts a,
service s,
alert_escalation_levels lvl,
escalation_policy_step step,
escalation_policy_actions act
WHERE s.id = a.service_id
AND step.escalation_policy_id = s.escalation_policy_id
AND step.step_number = lvl.relative_level
AND a.status != 'closed'::enum_alert_status
AND act.escalation_policy_step_id = step.id
GROUP BY user_id, schedule_id, a.id
)
SELECT
au.alert_id,
au.status,
CASE WHEN au.user_id IS NULL THEN oc.user_id
ELSE au.user_id
END
FROM alert_users au
LEFT JOIN on_call oc ON au.schedule_id = oc.schedule_id;
CREATE OR REPLACE VIEW on_call AS
WITH rotation_details AS (
SELECT
id,
schedule_id,
start_time,
(shift_length::TEXT||CASE
WHEN type='hourly'::enum_rotation_type THEN ' hours'
WHEN type='daily'::enum_rotation_type THEN ' days'
ELSE ' weeks'
END)::interval shift,
(CASE
WHEN type='hourly'::enum_rotation_type THEN extract(epoch from now()-start_time)/3600
WHEN type='daily'::enum_rotation_type THEN extract(days from now()-start_time)
ELSE extract(days from now()-start_time)/7
END/shift_length)::BIGINT shift_number
FROM rotations
),
p_count AS (
SELECT rotation_id, count(rp.id)
FROM
rotation_participants rp,
rotation_details d
WHERE rp.rotation_id = d.id
GROUP BY rotation_id
),
current_participant AS (
SELECT user_id, p.rotation_id
FROM
rotation_participants rp,
rotation_details d,
p_count p
WHERE rp.rotation_id = d.id
AND p.rotation_id = rp.rotation_id
AND rp.position = d.shift_number % p.count
),
next_participant AS (
SELECT user_id, p.rotation_id
FROM
rotation_participants rp,
rotation_details d,
p_count p
WHERE rp.rotation_id = d.id
AND p.rotation_id = rp.rotation_id
AND rp.position = (d.shift_number+1) % p.count
)
SELECT
d.schedule_id,
d.id rotation_id,
c.user_id,
n.user_id next_user_id,
(d.shift*d.shift_number)+d.start_time start_time,
(d.shift*(d.shift_number+1))+d.start_time end_time,
d.shift_number
FROM
rotation_details d,
current_participant c,
next_participant n
WHERE d.id = c.rotation_id
AND c.rotation_id = n.rotation_id;
-- +migrate Down
SELECT 1;
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