migration script from db version 8 to 9 (policy dimension)

backend/migrate/migrations/scripts/migration_9.sql

@@ -0,0 +1,16 @@
+DROP VIEW view_hijacks;
+
+ALTER TABLE hijacks
+    ALTER COLUMN type TYPE VARCHAR ( 7 ) USING replace(
+    replace(
+    replace(
+    replace(
+    replace(
+    replace(type::VARCHAR ( 5 ), 'S|0|-', 'S|0|-|-'),
+    'S|1|-', 'S|1|-|-'),
+    'S|-|-', 'S|-|-|-'),
+    'E|0|-', 'E|0|-|-'),
+    'E|1|-', 'E|1|-|-'),
+    'Q|0|-', 'Q|0|-|-')::VARCHAR ( 7 );
+
+CREATE OR REPLACE VIEW view_hijacks AS SELECT key, type, prefix, hijack_as, num_peers_seen, num_asns_inf, time_started, time_ended, time_last, mitigation_started, time_detected, timestamp_of_config, under_mitigation, resolved, active, ignored, configured_prefix, comment, seen, withdrawn, outdated, peers_withdrawn, peers_seen FROM hijacks;

backend/migrate/migrations/target_steps.json

@@ -47,6 +47,12 @@
             "db_version": "8",
             "description": "Added indexes in table: hijacks",
             "file": "migration_8.sql"
+        },
+        "9": {
+            "id": "9",
+            "db_version": "9",
+            "description": "Expanded hijacks type field from 5 to 7 characters to support policy dimension and migrated hijacks",
+            "file": "migration_9.sql"
         }
     }
 }