File size: 5,324 Bytes
1e92f2d |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 |
-- +migrate Up
CREATE TABLE notifications (
user_id UUID PRIMARY KEY REFERENCES users (id) ON DELETE CASCADE,
started_at TIMESTAMP NOT NULL DEFAULT now()
);
CREATE TABLE sent_notifications (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
alert_id BIGINT NOT NULL REFERENCES alerts (id) ON DELETE CASCADE,
contact_method_id UUID NOT NULL REFERENCES user_contact_methods (id) ON DELETE CASCADE,
sent_at TIMESTAMP,
UNIQUE(alert_id,contact_method_id)
);
CREATE VIEW active_contact_methods AS
SELECT users.id as user_id, m.id as contact_method_id
FROM users, user_contact_methods m, user_notification_rules r, notifications n
WHERE m.user_id = users.id
AND r.user_id = users.id
AND n.user_id = users.id
AND r.contact_method_id = m.id
AND ((r.delay_minutes::text||' minutes')::interval + n.started_at) < now();
CREATE VIEW triggered_alert_users AS
SELECT action.user_id as user_id, a.id as alert_id
FROM escalation_policy_actions action, escalation_policy_step step, service s, alerts a, alert_escalation_levels lvl
WHERE action.escalation_policy_step_id = step.id
AND step.escalation_policy_id = s.escalation_policy_id
AND step.step_number = lvl.relative_level
AND s.id = a.service_id
AND a.status = 'triggered'::enum_alert_status
GROUP BY a.id, action.user_id;
-- +migrate StatementBegin
CREATE OR REPLACE FUNCTION update_notifications() RETURNS VOID AS
$$
BEGIN
INSERT INTO notifications (user_id)
SELECT user_id FROM triggered_alert_users
GROUP BY user_id
ON CONFLICT DO NOTHING;
DELETE FROM notifications WHERE user_id NOT IN (SELECT user_id FROM triggered_alert_users WHERE user_id = user_id);
END;
$$ LANGUAGE 'plpgsql';
-- +migrate StatementEnd
-- +migrate StatementBegin
CREATE OR REPLACE FUNCTION add_notifications() RETURNS TRIGGER AS
$$
BEGIN
INSERT INTO notifications (user_id)
SELECT user_id FROM triggered_alert_users
WHERE alert_id = NEW.id
LIMIT 1
ON CONFLICT DO NOTHING;
DELETE FROM notifications WHERE user_id NOT IN (SELECT user_id FROM triggered_alert_users WHERE user_id = user_id);
RETURN NEW;
END;
$$ LANGUAGE 'plpgsql';
-- +migrate StatementEnd
CREATE TRIGGER add_notifications_alert_changed
AFTER UPDATE OR INSERT ON alerts
FOR EACH ROW
EXECUTE PROCEDURE add_notifications();
SELECT update_notifications();
CREATE VIEW needs_notification_sent AS
SELECT trig.alert_id, acm.contact_method_id, cm.type, cm.value, a.description, s.name as service_name
FROM active_contact_methods acm, triggered_alert_users trig, user_contact_methods cm, alerts a, service s
WHERE acm.user_id = trig.user_id
AND acm.user_id = trig.user_id
AND cm.id = acm.contact_method_id
AND cm.disabled = FALSE
AND a.id = trig.alert_id
AND s.id = a.service_id
AND NOT EXISTS (
SELECT id
FROM sent_notifications
WHERE alert_id = trig.alert_id
AND contact_method_id = acm.contact_method_id
AND sent_at IS NOT NULL
);
CREATE TABLE user_contact_method_locks (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
client_id UUID NOT NULL,
alert_id BIGINT NOT NULL REFERENCES alerts (id) ON DELETE CASCADE,
contact_method_id UUID NOT NULL REFERENCES user_contact_methods (id) ON DELETE CASCADE,
timestamp TIMESTAMP NOT NULL DEFAULT now(),
UNIQUE (alert_id, contact_method_id)
);
-- +migrate StatementBegin
CREATE OR REPLACE FUNCTION aquire_user_contact_method_lock(_client_id UUID, _alert_id BIGINT, _contact_method_id UUID) RETURNS UUID AS
$$
DECLARE
lock_id UUID = gen_random_uuid();
BEGIN
DELETE FROM user_contact_method_locks WHERE alert_id = _alert_id
AND contact_method_id = _contact_method_id
AND (timestamp + '5 minutes'::interval) < now();
INSERT INTO user_contact_method_locks (id, alert_id, contact_method_id, client_id)
VALUES (lock_id, _alert_id, _contact_method_id, _client_id)
RETURNING id INTO lock_id;
INSERT INTO sent_notifications (id, alert_id, contact_method_id) VALUES (lock_id, _alert_id, _contact_method_id);
RETURN lock_id;
END;
$$ LANGUAGE 'plpgsql';
-- +migrate StatementEnd
-- +migrate StatementBegin
CREATE OR REPLACE FUNCTION release_user_contact_method_lock(_client_id UUID, _id UUID, success BOOLEAN) RETURNS VOID AS
$$
BEGIN
DELETE FROM user_contact_method_locks WHERE id = _id AND client_id = _client_id;
IF success
THEN
UPDATE sent_notifications SET sent_at = now() WHERE id = _id;
ELSE
DELETE FROM sent_notifications WHERE id = _id;
END IF;
END;
$$ LANGUAGE 'plpgsql';
-- +migrate StatementEnd
-- +migrate Down
DROP FUNCTION update_notifications();
DROP VIEW active_contact_methods;
DROP VIEW triggered_alert_users;
DROP TABLE sent_notifications;
DROP TABLE notifications;
|