59 lines
1.9 KiB
MySQL
59 lines
1.9 KiB
MySQL
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-- migrate:up
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CREATE TABLE slo.targets (
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metric text PRIMARY KEY,
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threshold numeric NOT NULL,
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window_seconds int NOT NULL,
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description text,
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updated_at timestamptz NOT NULL DEFAULT now()
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);
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INSERT INTO slo.targets (metric, threshold, window_seconds, description) VALUES
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('fix_freshness_pct_60s', 95, 300, 'Pct of active devices with a fix within 90s, window 5 min'),
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('parser_lag_p95_sec', 30, 300, 'P95 of received_at -> events.parsed insertion lag, window 5 min'),
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('contract_drift_days', 1, 86400, 'Days since last successful sandbox contract validation');
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CREATE TABLE slo.measurements (
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measurement_id bigserial,
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metric text NOT NULL REFERENCES slo.targets(metric),
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value numeric NOT NULL,
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measured_at timestamptz NOT NULL DEFAULT now(),
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PRIMARY KEY (measurement_id, measured_at)
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);
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SELECT create_hypertable('slo.measurements', 'measured_at', chunk_time_interval => INTERVAL '7 days');
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CREATE INDEX slo_measurements_metric_time_idx
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ON slo.measurements (metric, measured_at DESC);
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CREATE OR REPLACE VIEW slo.v_current_status AS
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SELECT
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t.metric,
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t.threshold,
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t.window_seconds,
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latest.value AS current_value,
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latest.measured_at AS measured_at,
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CASE
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WHEN latest.value IS NULL THEN 'unknown'
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WHEN t.metric LIKE '%pct%'
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AND latest.value >= t.threshold THEN 'green'
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WHEN t.metric LIKE '%pct%'
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AND latest.value < t.threshold THEN 'red'
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WHEN latest.value <= t.threshold THEN 'green'
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ELSE 'red'
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END AS status
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FROM slo.targets t
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LEFT JOIN LATERAL (
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SELECT value, measured_at
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FROM slo.measurements m
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WHERE m.metric = t.metric
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ORDER BY measured_at DESC
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LIMIT 1
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) latest ON true;
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-- migrate:down
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DROP VIEW IF EXISTS slo.v_current_status;
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DROP TABLE IF EXISTS slo.measurements;
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DROP TABLE IF EXISTS slo.targets;
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