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Fix race condition where two connections both try to create the new month's table #16

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Fix race condition where two connections both try to create the new month's table #16

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6 changes: 5 additions & 1 deletion lib/pg_audit_log/entry.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -59,7 +59,11 @@ def install
EXECUTE 'SELECT ($1 + INTERVAL ''1 MONTH'')' INTO month_end USING month_start;
create_table_sql := 'CREATE TABLE ' || tablename || ' ( CHECK ( date(occurred_at) >= DATE ''' || month_start || ''' AND date(occurred_at) < DATE ''' ||
month_end || ''' ) ) INHERITS (#{self.table_name})';
EXECUTE create_table_sql;
BEGIN
EXECUTE create_table_sql;
EXCEPTION WHEN duplicate_table THEN
-- do nothing
END;
EXECUTE 'CREATE INDEX ' || tablename || '_occurred_at ON ' || tablename || ' (date(occurred_at))';
EXECUTE insert_sql USING NEW;
RETURN NULL;
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