Mise à jour des couches de routage

scripts/routing.sql

@@ -115,5 +115,14 @@ ON a.edge = b.id
 -- si besoin : nettoyage par Drop du schéma
 SELECT topology.DropTopology('osm_roads_topo');
 
+-- permissions
+ALTER SCHEMA osm_roads_topo OWNER TO redadeg ;
+ALTER TABLE osm_roads_topo.edge_data OWNER TO redadeg ;
+ALTER TABLE osm_roads_topo.face OWNER TO redadeg ;
+ALTER TABLE osm_roads_topo.node OWNER TO redadeg ;
+ALTER TABLE osm_roads_topo.relation OWNER TO redadeg ;
+ALTER VIEW osm_roads_topo.edge OWNER TO redadeg ;
+ALTER SEQUENCE osm_roads_topo.layer_id_seq OWNER TO redadeg ;
+ALTER SEQUENCE osm_roads_topo.topogeo_s_1 OWNER TO redadeg ;
 
 

scripts/update_osm_roads_pgr.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+
+set -e
+set -u
+
+PSQL=/usr/bin/psql
+DB_HOST=localhost
+DB_NAME=redadeg
+DB_USER=redadeg
+
+
+cd /data/www/vhosts/ar-redadeg_openstreetmap_bzh/htdocs/scripts/
+
+
+echo "++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++"
+echo "  Mise à jour des couches de routage"
+echo ""
+echo "  prend environ 5 min"
+echo ""
+
+# cette couche vient d'une base osm donc il faut la recharger
+$PSQL -h $DB_HOST -U $DB_USER -d $DB_NAME -c "TRUNCATE TABLE public.osm_roads;"
+$PSQL -h $DB_HOST -U $DB_USER -d $DB_NAME < data/osm_roads.sql
+
+
+# maj de la topologie de la couche osm_roads_pgr qui sert au routage
+$PSQL -h $DB_HOST -U $DB_USER -d $DB_NAME < update_osm_roads_pgr.sql
+
+echo "fini"
+echo ""
+
+

scripts/update_osm_roads_pgr.sql

@@ -0,0 +1,58 @@
+/*
+==========================================================================
+
+    phase 2 : Mise à jour des couches de routage
+
+==========================================================================
+*/
+
+-- /!\
+-- cela suppose que la couche osm_roads est à jour !!
+-- or cette couche est calculée à partir d'une BD osm cf la documentation
+
+
+-- maj de la topologie de la couche osm_roads_pgr qui sert au routage
+-- 3 min
+UPDATE osm_roads SET topo_geom = topology.toTopoGeom(the_geom, 'osm_roads_topo', 1, 0.00001);
+
+
+-- maj de la couche support des calculs d'itinéraire
+-- 30 s
+TRUNCATE TABLE osm_roads_pgr ;
+INSERT INTO osm_roads_pgr
+( SELECT 
+  row_number() over() as id,
+  o.osm_id,
+  o.highway,
+  o.type,
+  o.oneway,
+  o.ref,
+  o.name_fr,
+  o.name_br,
+  NULL as source,
+  NULL as target,
+  NULL as cost,
+  NULL as reverse_cost,
+  e.geom as the_geom
+FROM osm_roads_topo.edge e,
+     osm_roads_topo.relation rel,
+     osm_roads o
+WHERE e.edge_id = rel.element_id
+  AND rel.topogeo_id = (o.topo_geom).id
+);
+
+-- calcul des 2 attributs de coût (= longueur)
+UPDATE osm_roads_pgr SET cost = st_length(the_geom);
+UPDATE osm_roads_pgr SET reverse_cost = st_length(the_geom);
+
+
+-- calcul du graphe routier par pgRouting
+-- 30 s
+SELECT pgr_createTopology('osm_roads_pgr', 1.0);
+
+-- vérification
+SELECT pgr_analyzegraph('osm_roads_pgr', 1.0);
+SELECT pgr_nodeNetwork('osm_roads_pgr', 1.0);
+
+
+