27 lines
1.3 KiB
SQL
27 lines
1.3 KiB
SQL
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-- One row per installation that has ever reported in.
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--
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-- This table only exists on the instance that is acting as the collector. Every
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-- other instance has it too, empty, because the schema is the same everywhere —
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-- and because "am I the collector" is a setting, not a build.
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--
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-- What is deliberately NOT here is the point of the whole feature: there is no
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-- column for an IP address, a hostname, a domain, an account, a count of tasks,
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-- or anything else. The two things stored are the two things sent, and the table
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-- is the promise written down where it cannot drift from the prose — a column
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-- added here later is a promise broken, and it should be as awkward to add as
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-- possible.
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--
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-- `instance_id` is the primary key rather than a rowid alias, because the same
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-- installation reporting daily must update its row rather than grow a new one.
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-- What is wanted is "how many installations", not "how many pings".
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CREATE TABLE beacon_installs (
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instance_id TEXT PRIMARY KEY,
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version TEXT NOT NULL DEFAULT '',
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first_seen INTEGER NOT NULL,
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last_seen INTEGER NOT NULL
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);
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-- The count is always "seen in the last N days", so last_seen is what every query
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-- sorts and filters on.
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CREATE INDEX beacon_by_last_seen ON beacon_installs (last_seen DESC);
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