[Tile-serving] [openstreetmap/osm2pgsql] Add a post-processing option for the update script (#1423)

[Jochen Topf]

@joto approved this pull request.



> @@ -184,6 +184,18 @@ def update(conn, args):
     Any additional arguments to osm2pgsql need to be given after '--'. Database
     and the prefix parameter are handed through to osm2pgsql. They do not need
     to be repeated. '--append' and '--slim' will always be added as well.
+
+    Use the '--post-processing' parameter to execute a script after osm2pgsql has
+    run sucessfully. If the updates consists of multiple runs because the
+    maximum size of downloaded data was reached, then the script is executed
+    each time that osm2pgsql has run. When the post-processing fails, then
+    the entire update run is considered a failure and the replication information
+    is not updated. That means that when 'update' is run the next time it will
+    recommence with downloading the diffs again and reapplying them to the
+    database. This is usually save. The script receives two parameters:

safe

> @@ -184,6 +184,18 @@ def update(conn, args):
     Any additional arguments to osm2pgsql need to be given after '--'. Database
     and the prefix parameter are handed through to osm2pgsql. They do not need
     to be repeated. '--append' and '--slim' will always be added as well.
+
+    Use the '--post-processing' parameter to execute a script after osm2pgsql has
+    run sucessfully. If the updates consists of multiple runs because the

successfully

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