Merge pull request #3509 from lonvia/deprecations

[nominatim.git] / docs / admin / Migration.md

diff --git a/docs/admin/Migration.md b/docs/admin/Migration.md
index be7d90ff6ea217290560a5b2fa97f5dcc25cd63a..75f891412e8cf48f8644adab9e1c39d78377aae4 100644 (file)
--- a/docs/admin/Migration.md
+++ b/docs/admin/Migration.md
@@ -1,12 +1,17 @@
 # Database Migrations
 
-Since version 3.7.0 Nominatim offers automatic migrations. Please follow
+Nominatim offers automatic migrations since version 3.7. Please follow
 the following steps:
 
-* stop any updates that are potentially running
-* update Nominatim to the newer version
-* go to your project directory and run `nominatim admin --migrate`
-* (optionally) restart updates
+* Stop any updates that are potentially running
+* Update the backend: `pip install -U nominatim-db`
+* Go to your project directory and run `nominatim admin --migrate`
+* Update the frontend: `pip install -U nominatim-api`
+* (optionally) Restart updates
+
+If you are still using CMake for the installation of Nominatim, then you
+need to update the software in one step before migrating the database.
+It is not recommended to do this while the machine is serving requests.
 
 Below you find additional migrations and hints about other structural and
 breaking changes. **Please read them before running the migration.**
@@ -15,7 +20,23 @@ breaking changes. **Please read them before running the migration.**
     If you are migrating from a version <3.6, then you still have to follow
     the manual migration steps up to 3.6.
 
-## 4.1.0 -> master
+## 4.4.0 -> master
+
+### New structure for Python packages
+
+The nominatim Python package has been split into `nominatim-db` and `nominatim-api`.
+Any imports need to be adapted accordingly.
+
+If you are running the Python frontend, change the server module from
+`nominatim.server.falcon.server` to `nominatim_api.server.falcon.server`.
+
+If you are using the Nominatim library, all imports need to be changed
+from `nominatim.api.<module>` to `nominatim_api.<module>`.
+
+If you have written custom tokenizers or sanitizers, the appropriate modules
+are now found in `nominatim_db`.
+
+## 4.2.0 -> 4.3.0
 
 ### New indexes for reverse lookup
 
@@ -27,7 +48,7 @@ therefore either remove traffic from the machine before attempting a
 version update or create the index manually **before** starting the update
 using the following SQL:
 
-```
+```sql
 CREATE INDEX IF NOT EXISTS idx_placex_geometry_reverse_lookupPlaceNode
   ON placex USING gist (ST_Buffer(geometry, reverse_place_diameter(rank_search)))
   WHERE rank_address between 4 and 25 AND type != 'postcode'