--- Name: maptile_for_point(bigint, bigint, integer); Type: FUNCTION; Schema: public; Owner: -
---
-
-CREATE FUNCTION public.maptile_for_point(bigint, bigint, integer) RETURNS integer
- LANGUAGE c STRICT
- AS '$libdir/libpgosm.so', 'maptile_for_point';
-
-
---
--- Name: tile_for_point(integer, integer); Type: FUNCTION; Schema: public; Owner: -
---
-
-CREATE FUNCTION public.tile_for_point(integer, integer) RETURNS bigint
- LANGUAGE c STRICT
- AS '$libdir/libpgosm.so', 'tile_for_point';
-
-
---
--- Name: xid_to_int4(xid); Type: FUNCTION; Schema: public; Owner: -
---
-
-CREATE FUNCTION public.xid_to_int4(xid) RETURNS integer
- LANGUAGE c IMMUTABLE STRICT
- AS '$libdir/libpgosm.so', 'xid_to_int4';
+-- Name: api_rate_limit(bigint); Type: FUNCTION; Schema: public; Owner: -
+--
+
+CREATE FUNCTION public.api_rate_limit(user_id bigint) RETURNS integer
+ LANGUAGE plpgsql STABLE
+ AS $$
+ DECLARE
+ min_changes_per_hour int4 := 100;
+ initial_changes_per_hour int4 := 1000;
+ max_changes_per_hour int4 := 100000;
+ days_to_max_changes int4 := 7;
+ importer_changes_per_hour int4 := 1000000;
+ moderator_changes_per_hour int4 := 1000000;
+ roles text[];
+ last_block timestamp without time zone;
+ first_change timestamp without time zone;
+ active_reports int4;
+ time_since_first_change double precision;
+ max_changes double precision;
+ recent_changes int4;
+ BEGIN
+ SELECT ARRAY_AGG(user_roles.role) INTO STRICT roles FROM user_roles WHERE user_roles.user_id = api_rate_limit.user_id;
+
+ IF 'moderator' = ANY(roles) THEN
+ max_changes := moderator_changes_per_hour;
+ ELSIF 'importer' = ANY(roles) THEN
+ max_changes := importer_changes_per_hour;
+ ELSE
+ SELECT user_blocks.created_at INTO last_block FROM user_blocks WHERE user_blocks.user_id = api_rate_limit.user_id ORDER BY user_blocks.created_at DESC LIMIT 1;
+
+ IF FOUND THEN
+ SELECT changesets.created_at INTO first_change FROM changesets WHERE changesets.user_id = api_rate_limit.user_id AND changesets.created_at > last_block ORDER BY changesets.created_at LIMIT 1;
+ ELSE
+ SELECT changesets.created_at INTO first_change FROM changesets WHERE changesets.user_id = api_rate_limit.user_id ORDER BY changesets.created_at LIMIT 1;
+ END IF;
+
+ IF NOT FOUND THEN
+ first_change := CURRENT_TIMESTAMP AT TIME ZONE 'UTC';
+ END IF;
+
+ SELECT COUNT(*) INTO STRICT active_reports
+ FROM issues INNER JOIN reports ON reports.issue_id = issues.id
+ WHERE issues.reported_user_id = api_rate_limit.user_id AND issues.status = 'open' AND reports.updated_at >= COALESCE(issues.resolved_at, '1970-01-01');
+
+ time_since_first_change := EXTRACT(EPOCH FROM CURRENT_TIMESTAMP AT TIME ZONE 'UTC' - first_change);
+
+ max_changes := max_changes_per_hour * POWER(time_since_first_change, 2) / POWER(days_to_max_changes * 24 * 60 * 60, 2);
+ max_changes := GREATEST(initial_changes_per_hour, LEAST(max_changes_per_hour, FLOOR(max_changes)));
+ max_changes := max_changes / POWER(2, active_reports);
+ max_changes := GREATEST(min_changes_per_hour, LEAST(max_changes_per_hour, max_changes));
+ END IF;
+
+ SELECT COALESCE(SUM(changesets.num_changes), 0) INTO STRICT recent_changes FROM changesets WHERE changesets.user_id = api_rate_limit.user_id AND changesets.created_at >= CURRENT_TIMESTAMP AT TIME ZONE 'UTC' - '1 hour'::interval;
+
+ RETURN max_changes - recent_changes;
+ END;
+ $$;
+
+
+--
+-- Name: api_size_limit(bigint); Type: FUNCTION; Schema: public; Owner: -
+--
+
+CREATE FUNCTION public.api_size_limit(user_id bigint) RETURNS bigint
+ LANGUAGE plpgsql STABLE
+ AS $$
+ DECLARE
+ min_size_limit int8 := 10000000;
+ initial_size_limit int8 := 30000000;
+ max_size_limit int8 := 5400000000;
+ days_to_max_size_limit int4 := 28;
+ importer_size_limit int8 := 5400000000;
+ moderator_size_limit int8 := 5400000000;
+ roles text[];
+ last_block timestamp without time zone;
+ first_change timestamp without time zone;
+ active_reports int4;
+ time_since_first_change double precision;
+ size_limit int8;
+ BEGIN
+ SELECT ARRAY_AGG(user_roles.role) INTO STRICT roles FROM user_roles WHERE user_roles.user_id = api_size_limit.user_id;
+
+ IF 'moderator' = ANY(roles) THEN
+ size_limit := moderator_size_limit;
+ ELSIF 'importer' = ANY(roles) THEN
+ size_limit := importer_size_limit;
+ ELSE
+ SELECT user_blocks.created_at INTO last_block FROM user_blocks WHERE user_blocks.user_id = api_size_limit.user_id ORDER BY user_blocks.created_at DESC LIMIT 1;
+
+ IF FOUND THEN
+ SELECT changesets.created_at INTO first_change FROM changesets WHERE changesets.user_id = api_size_limit.user_id AND changesets.created_at > last_block ORDER BY changesets.created_at LIMIT 1;
+ ELSE
+ SELECT changesets.created_at INTO first_change FROM changesets WHERE changesets.user_id = api_size_limit.user_id ORDER BY changesets.created_at LIMIT 1;
+ END IF;
+
+ IF NOT FOUND THEN
+ first_change := CURRENT_TIMESTAMP AT TIME ZONE 'UTC';
+ END IF;
+
+ SELECT COUNT(*) INTO STRICT active_reports
+ FROM issues INNER JOIN reports ON reports.issue_id = issues.id
+ WHERE issues.reported_user_id = api_size_limit.user_id AND issues.status = 'open' AND reports.updated_at >= COALESCE(issues.resolved_at, '1970-01-01');
+
+ time_since_first_change := EXTRACT(EPOCH FROM CURRENT_TIMESTAMP AT TIME ZONE 'UTC' - first_change);
+
+ size_limit := max_size_limit * POWER(time_since_first_change, 2) / POWER(days_to_max_size_limit * 24 * 60 * 60, 2);
+ size_limit := GREATEST(initial_size_limit, LEAST(max_size_limit, FLOOR(size_limit)));
+ size_limit := size_limit / POWER(2, active_reports);
+ size_limit := GREATEST(min_size_limit, LEAST(max_size_limit, size_limit));
+ END IF;
+
+ RETURN size_limit;
+ END;
+ $$;
projects / rails.git / blobdiff