Add KDVH migration package

db/flags.sql

@@ -7,9 +7,21 @@ CREATE TABLE IF NOT EXISTS flags.kvdata (
     corrected REAL NULL,
     controlinfo TEXT NULL,
     useinfo TEXT NULL,
+    -- TODO: check that this type is correct, it's stored as a string in Kvalobs?
     cfailed INT4 NULL,
     CONSTRAINT unique_kvdata_timeseries_obstime UNIQUE (timeseries, obstime)
 );
 
 CREATE INDEX IF NOT EXISTS kvdata_obtime_index ON flags.kvdata (obstime);
 CREATE INDEX IF NOT EXISTS kvdata_timeseries_index ON flags.kvdata USING HASH (timeseries); 
+
+CREATE TABLE IF NOT EXISTS flags.kdvh (
+    timeseries INT4 REFERENCES public.timeseries,
+    obstime TIMESTAMPTZ NOT NULL,
+    controlinfo TEXT NULL,
+    useinfo TEXT NULL,
+    CONSTRAINT unique_kdvh_timeseries_obstime UNIQUE (timeseries, obstime)
+);
+
+CREATE INDEX IF NOT EXISTS kdvh_obtime_index ON flags.kdvh (obstime);
+CREATE INDEX IF NOT EXISTS kdvh_timeseries_index ON flags.kdvh USING HASH (timeseries); 

integration_tests/src/main.rs

@@ -37,6 +37,7 @@ async fn main() {
         }
     });
 
+    // NOTE: order matters
     let schemas = ["db/public.sql", "db/labels.sql", "db/flags.sql"];
     for schema in schemas {
         insert_schema(&client, schema).await.unwrap();

migrations/.gitignore

@@ -0,0 +1,7 @@
+*.txt
+*.sh
+migrate
+tables*/
+test_*/
+.env
+dumps/

migrations/README.md

@@ -0,0 +1,27 @@
+# Migrations
+
+Go package used to dump tables from old databases (KDVH, Kvalobs) and import them into LARD.
+
+## Usage
+
+1. Compile it with
+
+   ```terminal
+   go build
+   ```
+
+1. Dump tables from KDVH
+
+   ```terminal
+   ./migrate kdvh dump --help
+   ```
+
+1. Import dumps into LARD
+
+   ```terminal
+   ./migrate kdvh import --help
+   ```
+
+## Other notes
+
+Insightful talk on migrations: [here](https://www.youtube.com/watch?v=wqXqJfQMrqI&t=280s)

migrations/go.mod

@@ -0,0 +1,27 @@
+module migrate
+
+go 1.22.3
+
+require (
+	github.com/gocarina/gocsv v0.0.0-20240520201108-78e41c74b4b1
+	github.com/jackc/pgx/v5 v5.6.0
+	github.com/jessevdk/go-flags v1.6.1
+	github.com/joho/godotenv v1.5.1
+	github.com/rickb777/period v1.0.5
+	github.com/schollz/progressbar/v3 v3.16.1
+)
+
+require (
+	github.com/govalues/decimal v0.1.29 // indirect
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20221227161230-091c0ba34f0a // indirect
+	github.com/jackc/puddle/v2 v2.2.1 // indirect
+	github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db // indirect
+	github.com/rickb777/plural v1.4.2 // indirect
+	github.com/rivo/uniseg v0.4.7 // indirect
+	golang.org/x/crypto v0.25.0 // indirect
+	golang.org/x/sync v0.7.0 // indirect
+	golang.org/x/sys v0.26.0 // indirect
+	golang.org/x/term v0.25.0 // indirect
+	golang.org/x/text v0.16.0 // indirect
+)

migrations/go.sum

@@ -0,0 +1,62 @@
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