X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/0ad1b28497b49bf8baa5cfa2ea4438c4824617a1..b9517c99ae6297c2ab908d7fa324efd2d1b2f43a:/nominatim/tools/replication.py

diff --git a/nominatim/tools/replication.py b/nominatim/tools/replication.py
index c7d0d3e5..cb201b1e 100644
--- a/nominatim/tools/replication.py
+++ b/nominatim/tools/replication.py
@@ -6,13 +6,18 @@ from enum import Enum
 import logging
 import time
 
-from osmium.replication.server import ReplicationServer
-from osmium import WriteHandler
-
 from ..db import status
 from .exec_utils import run_osm2pgsql
 from ..errors import UsageError
 
+try:
+    from osmium.replication.server import ReplicationServer
+    from osmium import WriteHandler
+except ModuleNotFoundError as exc:
+    logging.getLogger().fatal("pyosmium not installed. Replication functions not available.\n"
+                              "To install pyosmium via pip: pip3 install osmium")
+    raise UsageError("replication tools not available") from exc
+
 LOG = logging.getLogger()
 
 def init_replication(conn, base_url):
@@ -101,7 +106,7 @@ def update(conn, options):
     repl = ReplicationServer(options['base_url'])
 
     outhandler = WriteHandler(str(options['import_file']))
-    endseq = repl.apply_diffs(outhandler, startseq,
+    endseq = repl.apply_diffs(outhandler, startseq + 1,
                               max_size=options['max_diff_size'] * 1024)
     outhandler.close()