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+# Self hosted update guide
+
+In this guide we are updating a self hosted installation version 0.7.2 to version 0.9.3. When updating from or to other versions principle remain the same.
+
+The installation we are upgrading was installed in April 2024 using the installation instructions found on the pgsail github site. Platform is an Ubuntu 22.04 Virtual Machine.
+Before the upgrade, around 120 trips were logged. Needless to say we don't want to loose our data.
+
+Unfortunately, there is no automatic update path available, this may change but for now we had to follow the general update instuctions.
+
+## General update instructions
+
+- Make a backup
+- Update the containers.
+- Update possible extensions.
+- Run database migrations.
+- Additional data migration.
+- Update SignalK client.
+
+## Let's go
+
+### Tools used
+
+In addition to the tools that are already installed as part of Unbuntu and PostgSail, I used DBeaver to examine the database from my Windows desktop.
+
+<https://dbeaver.io/download/>
+
+### Make a backup
+
+Start by making a backup of the database, the docker-compose.yml and .env files. Note that in my case the database was stored in a host folder, later versions are using a docker volume. To copy the database it neccesary the containers are stopped.
+
+```bash
+cd postgsail
+mkdir backup
+docker compose stop
+cp .env docker-compose.yml backup/
+docker compose cp -a db:/var/lib/postgresql/data backup/db-data
+```
+
+### Update the containers
+
+Make a note of the last migration in the initdb folder, in my case this was 99_migrations_202404.sql. Because I used git clone, the migration file was a bit inbetween 0.7.1 and 0.7.2, therefore I decided 99_migrations_202404.sql was the first migration to run.
+
+Remove the containers:
+
+```bash
+docker compose down
+```
+
+Get the latest PostgSail from github, we checkout a specific tag to ensure we have a stable release version. If you installed it from a binary release, just update from the latest binary release.
+
+```bash
+git pull remote main
+git fetch --all --tags
+git checkout tags/v0.9.3
+```
+
+```text
+Note: switching to 'tags/v0.9.3'.
+
+You are in 'detached HEAD' state. You can look around, make experimental
+changes and commit them, and you can discard any commits you make in this
+state without impacting any branches by switching back to a branch.
+
+If you want to create a new branch to retain commits you create, you may
+do so (now or later) by using -c with the switch command. Example:
+
+  git switch -c <new-branch-name>
+
+Or undo this operation with:
+
+  git switch -
+
+Turn off this advice by setting config variable advice.detachedHead to false
+
+HEAD is now at 12e4baf Release PostgSail 0.9.3
+```
+
+**Ensure new docker-compose.yml file matches your database folder or volume setting, adjust as needed.**
+
+Get the latest containers.
+
+```bash
+docker compose pull
+```
+
+### Update possible extentions
+
+Start database container.
+
+```bash
+docker compose up -d db
+```
+
+Excec psql shell in databse container.
+
+```bash
+docker compose exec db sh
+psql --username "$POSTGRES_USER" --dbname "$POSTGRES_DB"
+\c signalk;
+```
+
+Check extensions which can be updated, be sure to run from the signalk database:
+
+```sql
+SELECT name, default_version, installed_version FROM pg_available_extensions where default_version <> installed_version;
+```
+
+The postgis extention can be upgraded with this SQL query:
+
+```sql
+SELECT postgis_extensions_upgrade();
+```
+
+Updating the timescaledb requires running from a new session, use following commands (note the -X options, that is neccesary):
+
+```bash
+docker compose exec db sh
+psql --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" -X
+```
+
+Then run following SQL commands from the psql shell:
+
+```sql
+ALTER EXTENSION timescaledb UPDATE;
+CREATE EXTENSION IF NOT EXISTS timescaledb_toolkit;
+ALTER EXTENSION timescaledb_toolkit UPDATE;
+```
+
+For others, to be checked. In my case, the postgis extension was essential.
+
+### Run datbabase migrations
+
+Then run the migrations, adjust start and end for first and last migration file to execute.
+
+```bash
+start=202404; end=202507; for f in $(ls ./docker-entrypoint-initdb.d/99_migrations_*.sql | sort); do s=$(basename "$f" | sed -E 's/^99_migrations_([0-9]{6})\.sql$/\1/'); if [[ "$s" < "$start" || "$s" > "$end" ]]; then continue; fi; echo "Running $f"; psql --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" < "$f"; done
+```
+
+Or line by line
+
+```bash
+psql --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" < ./docker-entrypoint-initdb.d/99_migrations_202404.sql
+psql --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" < ./docker-entrypoint-initdb.d/99_migrations_202405.sql
+psql --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" < ./docker-entrypoint-initdb.d/99_migrations_202406.sql
+psql --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" < ./docker-entrypoint-initdb.d/99_migrations_202407.sql
+psql --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" < ./docker-entrypoint-initdb.d/99_migrations_202408.sql
+psql --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" < ./docker-entrypoint-initdb.d/99_migrations_202409.sql
+psql --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" < ./docker-entrypoint-initdb.d/99_migrations_202410.sql
+psql --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" < ./docker-entrypoint-initdb.d/99_migrations_202411.sql
+psql --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" < ./docker-entrypoint-initdb.d/99_migrations_202412.sql
+psql --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" < ./docker-entrypoint-initdb.d/99_migrations_202501.sql
+psql --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" < ./docker-entrypoint-initdb.d/99_migrations_202504.sql
+psql --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" < ./docker-entrypoint-initdb.d/99_migrations_202505.sql
+psql --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" < ./docker-entrypoint-initdb.d/99_migrations_202507.sql
+```
+
+Now rebuild the web app.
+
+```bash
+docker compose build web
+```
+
+Maybe need to run 99env.sh - check.
+
+Then we can start the other containers.
+
+```bash
+docker compose up -d
+```
+
+After everything is started, the web site should be accesible.
+
+### Additional data migration
+
+Depending on the starting version, additional data migration may be needed.
+If the old trips are visible, but the routes are not, we need to run an SQL Script to re-calculate the trip metadata.
+
+```sql
+DO $$
+declare
+	-- Re calculate the trip metadata
+    logbook_rec record;
+    avg_rec record;
+	t_rec record;
+    batch_size INTEGER := 20;
+    offset_value INTEGER := 0;
+    done BOOLEAN := FALSE;
+    processed INTEGER := 0;
+begin
+	WHILE NOT done LOOP
+        processed := 0;
+	    FOR logbook_rec IN
+	        SELECT *
+	        FROM api.logbook
+	        WHERE _from IS NOT NULL
+	          AND _to IS NOT NULL
+	          AND active IS FALSE
+			  AND trip IS NULL
+	          --AND trip_heading IS NULL
+			  --AND vessel_id = '06b6d311ccfe'
+	        ORDER BY id DESC
+	        LIMIT batch_size -- OFFSET offset_value  -- don's use offset as causes entries to skip
+	    LOOP
+		processed := processed + 1;
+		-- Update logbook entry with the latest metric data and calculate data
+		PERFORM set_config('vessel.id', logbook_rec.vessel_id, false);
+        
+		-- Calculate trip metadata
+		avg_rec := logbook_update_avg_fn(logbook_rec.id, logbook_rec._from_time::TEXT, logbook_rec._to_time::TEXT);
+		--UPDATE api.logbook
+		--	SET extra = jsonb_recursive_merge(extra, jsonb_build_object('avg_wind_speed', avg_rec.avg_wind_speed))
+		-- WHERE id = logbook_rec.id;
+		if avg_rec.count_metric IS NULL OR avg_rec.count_metric = 0 then
+			-- We don't have the orignal metrics, we should read the geojson
+			continue; -- return current row of SELECT
+		end if;
+
+        -- mobilitydb, add spaciotemporal sequence
+        -- reduce the numbers of metrics by skipping row or aggregate time-series
+        -- By default the signalk plugin report one entry every minute.
+        IF avg_rec.count_metric < 30 THEN -- if less ~20min trip we keep it all data
+            t_rec := logbook_update_metrics_short_fn(avg_rec.count_metric, logbook_rec._from_time, logbook_rec._to_time);
+        ELSIF avg_rec.count_metric < 2000 THEN -- if less ~33h trip we skip data
+            t_rec := logbook_update_metrics_fn(avg_rec.count_metric, logbook_rec._from_time, logbook_rec._to_time);
+        ELSE -- As we have too many data, we time-series aggregate data
+            t_rec := logbook_update_metrics_timebucket_fn(avg_rec.count_metric, logbook_rec._from_time, logbook_rec._to_time);
+        END IF;
+        --RAISE NOTICE 'mobilitydb [%]', t_rec;
+        IF t_rec.trajectory IS NULL THEN
+            RAISE WARNING '-> process_logbook_queue_fn, vessel_id [%], invalid mobilitydb data [%] [%]', logbook_rec.vessel_id, _id, t_rec;
+            RETURN;
+        END IF;
+
+        RAISE NOTICE '-> process_logbook_queue_fn, vessel_id [%], update entry logbook id:[%] start:[%] end:[%]', logbook_rec.vessel_id, logbook_rec.id, logbook_rec._from_time, logbook_rec._to_time;
+        UPDATE api.logbook
+            SET
+                trip = t_rec.trajectory,
+                trip_cog = t_rec.courseovergroundtrue,
+                trip_sog = t_rec.speedoverground,
+                trip_twa = t_rec.windspeedapparent,
+                trip_tws = t_rec.truewindspeed,
+                trip_twd = t_rec.truewinddirection,
+                trip_notes = t_rec.notes, -- don't overwrite existing user notes. **** Must set trip_notes otherwise replay is not working.
+                trip_status = t_rec.status,
+                trip_depth = t_rec.depth,
+                trip_batt_charge = t_rec.stateofcharge,
+                trip_batt_voltage = t_rec.voltage,
+                trip_temp_water = t_rec.watertemperature,
+                trip_temp_out = t_rec.outsidetemperature,
+                trip_pres_out = t_rec.outsidepressure,
+                trip_hum_out = t_rec.outsidehumidity,
+				trip_heading = t_rec.heading, -- heading True
+				trip_tank_level = t_rec.tankLevel, -- Tank currentLevel
+				trip_solar_voltage = t_rec.solarVoltage, -- solar voltage
+				trip_solar_power = t_rec.solarPower -- solar powerPanel
+            WHERE id = logbook_rec.id;
+
+        END LOOP;
+
+        RAISE NOTICE '-> Processed:[%]', processed;
+        IF processed = 0 THEN
+          done := TRUE; 
+        ELSE
+            offset_value := offset_value + batch_size;
+        END IF;
+    END LOOP;
+
+END $$;
+```
+
+### Update SignalK client
+
+The SignalK client can be updated from the SignalK Web UI. After the migration we updated this to version v0.5.0
+
+### Trouble shooting
+
+During this migration, several issues came up, they eventually boiled down to an extension not updated and permissions issues.