[PATCH v2] location-importer.in: track original countries as well

["Peter Müller" <peter.mueller@ipfire.org>]

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This helps us to determine how many network objects have more than one
country set, and what their original country code set looked like.

The second version of this patch uses ALTER TABLE to add the column for
original countries, preventing existing SQL setups from breaking.

Signed-off-by: Peter Müller <peter.mueller(a)ipfire.org>
---
 src/python/location-importer.in | 52 ++++++++++++++++++++-------------
 1 file changed, 32 insertions(+), 20 deletions(-)

diff --git a/src/python/location-importer.in b/src/python/location-importer.in
index e5f55af..c3f908a 100644
--- a/src/python/location-importer.in
+++ b/src/python/location-importer.in
@@ -165,6 +165,7 @@ class CLI(object):
 
 				-- networks
 				CREATE TABLE IF NOT EXISTS networks(network inet, country text);
+				ALTER TABLE networks ADD COLUMN IF NOT EXISTS original_countries text[];
 				CREATE UNIQUE INDEX IF NOT EXISTS networks_network ON networks(network);
 				CREATE INDEX IF NOT EXISTS networks_family ON networks USING BTREE(family(network));
 				CREATE INDEX IF NOT EXISTS networks_search ON networks USING GIST(network inet_ops);
@@ -377,7 +378,7 @@ class CLI(object):
 					ON COMMIT DROP;
 				CREATE UNIQUE INDEX _organizations_handle ON _organizations(handle);
 
-				CREATE TEMPORARY TABLE _rirdata(network inet NOT NULL, country text NOT NULL)
+				CREATE TEMPORARY TABLE _rirdata(network inet NOT NULL, country text NOT NULL, original_countries text[] NOT NULL)
 					ON COMMIT DROP;
 				CREATE INDEX _rirdata_search ON _rirdata USING BTREE(family(network), masklen(network));
 				CREATE UNIQUE INDEX _rirdata_network ON _rirdata(network);
@@ -407,8 +408,8 @@ class CLI(object):
 			for family in (row.family for row in families):
 				smallest = self.db.get("SELECT MIN(masklen(network)) AS prefix FROM _rirdata WHERE family(network) = %s", family)
 
-				self.db.execute("INSERT INTO networks(network, country) \
-					SELECT network, country FROM _rirdata WHERE masklen(network) = %s AND family(network) = %s", smallest.prefix, family)
+				self.db.execute("INSERT INTO networks(network, country, original_countries) \
+					SELECT network, country, original_countries FROM _rirdata WHERE masklen(network) = %s AND family(network) = %s", smallest.prefix, family)
 
 				# ... determine any other prefixes for this network family, ...
 				prefixes = self.db.query("SELECT DISTINCT masklen(network) AS prefix FROM _rirdata \
@@ -421,7 +422,8 @@ class CLI(object):
 						WITH candidates AS (
 							SELECT
 								_rirdata.network,
-								_rirdata.country
+								_rirdata.country,
+								_rirdata.original_countries
 							FROM
 								_rirdata
 							WHERE
@@ -434,6 +436,7 @@ class CLI(object):
 								DISTINCT ON (c.network)
 								c.network,
 								c.country,
+								c.original_countries,
 								masklen(networks.network),
 								networks.country AS parent_country
 							FROM
@@ -447,10 +450,11 @@ class CLI(object):
 								masklen(networks.network) DESC NULLS LAST
 						)
 						INSERT INTO
-							networks(network, country)
+							networks(network, country, original_countries)
 						SELECT
 							network,
-							country
+							country,
+							original_countries
 						FROM
 							filtered
 						WHERE
@@ -617,28 +621,36 @@ class CLI(object):
 				inetnum[key] = [ipaddress.ip_network(val, strict=False)]
 
 			elif key == "country":
-				inetnum[key] = val.upper()
+				# Catch RIR data objects with more than one country code...
+				if not key in inetnum.keys():
+					inetnum[key] = []
+				else:
+					if val.upper() in inetnum.get("country"):
+						# ... but keep this list distinct...
+						continue
+
+				inetnum[key].append(val.upper())
 
 		# Skip empty objects
 		if not inetnum or not "country" in inetnum:
 			return
 
+		# Prepare skipping objects with unknown country codes...
+		invalidcountries = [singlecountry for singlecountry in inetnum.get("country") if singlecountry not in validcountries]
+
 		# Iterate through all networks enumerated from above, check them for plausibility and insert
 		# them into the database, if _check_parsed_network() succeeded
 		for single_network in inetnum.get("inet6num") or inetnum.get("inetnum"):
 			if self._check_parsed_network(single_network):
-
-				# Skip objects with unknown country codes - to avoid log spam for invalid or too small
-				# networks, this check is - kinda ugly - done at this point
-				if validcountries and inetnum.get("country") not in validcountries:
-					log.warning("Skipping network with bogus country '%s': %s" % \
-						(inetnum.get("country"), inetnum.get("inet6num") or inetnum.get("inetnum")))
+				# Skip objects with unknown country codes if they are valid to avoid log spam...
+				if validcountries and invalidcountries:
+					log.warning("Skipping network with bogus countr(y|ies) %s (original countries: %s): %s" % \
+						(invalidcountries, inetnum.get("country"), inetnum.get("inet6num") or inetnum.get("inetnum")))
 					break
 
-				# Everything is fine here, run INSERT statement...
-				self.db.execute("INSERT INTO _rirdata(network, country) \
-					VALUES(%s, %s) ON CONFLICT (network) DO UPDATE SET country = excluded.country",
-					"%s" % single_network, inetnum.get("country"),
+				self.db.execute("INSERT INTO _rirdata(network, country, original_countries) \
+					VALUES(%s, %s, %s) ON CONFLICT (network) DO UPDATE SET country = excluded.country",
+					"%s" % single_network, inetnum.get("country")[0], inetnum.get("country"),
 				)
 
 	def _parse_org_block(self, block):
@@ -729,10 +741,10 @@ class CLI(object):
 		if not self._check_parsed_network(network):
 			return
 
-		self.db.execute("INSERT INTO networks(network, country) \
-			VALUES(%s, %s) ON CONFLICT (network) DO \
+		self.db.execute("INSERT INTO networks(network, country, original_countries) \
+			VALUES(%s, %s, %s) ON CONFLICT (network) DO \
 			UPDATE SET country = excluded.country",
-			"%s" % network, country,
+			"%s" % network, country, [country],
 		)
 
 	def handle_update_announcements(self, ns):
-- 
2.20.1