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Add dynamic serial number to zonefile procedure

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This commit is contained in:
Martin Lensment 2014-11-28 15:14:24 +02:00
parent a88109021e
commit b022ddee3a
2 changed files with 121 additions and 1 deletions
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120
db/migrate/20141126140434_add_serial_to_zonefile_procedure.rb Normal file
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@ -0,0 +1,120 @@
class AddSerialToZonefileProcedure < ActiveRecord::Migration
# rubocop:disable Metrics/MethodLength
def up
execute <<-SQL
CREATE OR REPLACE FUNCTION generate_zonefile(i_origin varchar)
RETURNS text AS $$
DECLARE
zone_header text := concat('$ORIGIN ', i_origin, '.');
serial_num varchar;
include_filter varchar := '';
exclude_filter varchar := '';
ns_records text := '';
a_records text := '';
a4_records text := '';
ds_records text := '';
BEGIN
-- define filters
include_filter = '%' || i_origin;
-- for %.%.%
IF i_origin ~ '\\.' THEN
exclude_filter := '';
-- for %.%
ELSE
exclude_filter := '%.%.' || i_origin;
END IF;
SELECT ROUND(extract(epoch from now() at time zone 'utc')) INTO serial_num;
-- zonefile header
SELECT concat(
format('%-10s', '$ORIGIN'), i_origin, '.', chr(10),
format('%-10s', '$TTL'), zf.ttl, chr(10), chr(10),
format('%-10s', i_origin || '.'), 'IN SOA ', zf.master_nameserver, '. ', zf.email, '. (', chr(10),
format('%-17s', ''), format('%-12s', serial_num), '; serial number', chr(10),
format('%-17s', ''), format('%-12s', zf.refresh), '; refresh, seconds', chr(10),
format('%-17s', ''), format('%-12s', zf.retry), '; retry, seconds', chr(10),
format('%-17s', ''), format('%-12s', zf.expire), '; expire, seconds', chr(10),
format('%-17s', ''), format('%-12s', zf.minimum_ttl), '; minimum TTL, seconds', chr(10),
format('%-17s', ''), ')'
) FROM zonefile_settings zf WHERE i_origin = zf.origin INTO zone_header;
-- ns records
SELECT array_to_string(
array(
SELECT concat(d.name, '. IN NS ', ns.hostname, '.')
FROM domains d
JOIN nameservers ns ON ns.domain_id = d.id
WHERE d.name LIKE include_filter AND d.name NOT LIKE exclude_filter
ORDER BY
CASE d.name
WHEN i_origin THEN 1
END
),
chr(10)
) INTO ns_records;
-- a records
SELECT array_to_string(
array(
SELECT concat(cns.hostname, '. IN A ', cns.ipv4, '.') FROM cached_nameservers cns WHERE EXISTS (
SELECT 1
FROM nameservers ns
JOIN domains d ON d.id = ns.domain_id
WHERE d.name LIKE include_filter AND d.name NOT LIKE exclude_filter
AND ns.hostname = cns.hostname AND ns.ipv4 = cns.ipv4 AND ns.ipv6 = cns.ipv6
AND ns.ipv4 IS NOT NULL AND ns.ipv4 <> ''
)
),
chr(10)
) INTO a_records;
-- aaaa records
SELECT array_to_string(
array(
SELECT concat(cns.hostname, '. IN AAAA ', cns.ipv6, '.') FROM cached_nameservers cns WHERE EXISTS (
SELECT 1
FROM nameservers ns
JOIN domains d ON d.id = ns.domain_id
WHERE d.name LIKE include_filter AND d.name NOT LIKE exclude_filter
AND ns.hostname = cns.hostname AND ns.ipv6 = cns.ipv6 AND ns.ipv6 = cns.ipv6
AND ns.ipv6 IS NOT NULL AND ns.ipv6 <> ''
)
),
chr(10)
) INTO a4_records;
-- ds records
SELECT array_to_string(
array(
SELECT concat(
d.name, '. 86400 IN DS ', dk.ds_key_tag, ' ',
dk.ds_alg, ' ', dk.ds_digest_type, ' ', dk.ds_digest
)
FROM domains d
JOIN dnskeys dk ON dk.domain_id = d.id
WHERE d.name LIKE include_filter AND d.name NOT LIKE exclude_filter
),
chr(10)
) INTO ds_records;
RETURN concat(
zone_header, chr(10), chr(10),
'; Zone NS Records', chr(10), ns_records, chr(10), chr(10),
'; Zone A Records', chr(10), a_records, chr(10), chr(10),
'; Zone AAAA Records', chr(10), a4_records, chr(10), chr(10),
'; Zone DS Records', chr(10), ds_records
);
END;
$$
LANGUAGE plpgsql;
SQL
end
def down
execute <<-SQL
DROP FUNCTION generate_zonefile(i_origin varchar);
SQL
end
end

2
db/schema.rb
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@ -11,7 +11,7 @@
#
# It's strongly recommended that you check this file into your version control system.
ActiveRecord::Schema.define(version: 20141125111414) do
ActiveRecord::Schema.define(version: 20141126140434) do
# These are extensions that must be enabled in order to support this database
enable_extension "plpgsql"