X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/4cb6dc01f382e9fb748efbe4517442af2274f210..b9517c99ae6297c2ab908d7fa324efd2d1b2f43a:/nominatim/tools/replication.py

diff --git a/nominatim/tools/replication.py b/nominatim/tools/replication.py
index 04f1c45b..cb201b1e 100644
--- a/nominatim/tools/replication.py
+++ b/nominatim/tools/replication.py
@@ -6,11 +6,17 @@ 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()
 
@@ -31,7 +37,7 @@ def init_replication(conn, base_url):
         LOG.fatal("Cannot reach the configured replication service '%s'.\n"
                   "Does the URL point to a directory containing OSM update data?",
                   base_url)
-        raise RuntimeError("Failed to reach replication service")
+        raise UsageError("Failed to reach replication service")
 
     status.set_status(conn, date=date, seq=seq)
 
@@ -80,7 +86,7 @@ def update(conn, options):
     if startseq is None:
         LOG.error("Replication not set up. "
                   "Please run 'nominatim replication --init' first.")
-        raise RuntimeError("Replication not set up.")
+        raise UsageError("Replication not set up.")
 
     if not indexed and options['indexed_only']:
         LOG.info("Skipping update. There is data that needs indexing.")
@@ -100,7 +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()