loopdb: add reservation sqlc code

Author: sputn1ck

loopdb/sqlc/migrations/000003_reservations.down.sql

@@ -0,0 +1,2 @@
+DROP TABLE IF EXISTS reservation_updates;
+DROP TABLE IF EXISTS reservations;

loopdb/sqlc/migrations/000003_reservations.up.sql

@@ -0,0 +1,56 @@
+-- reservations contains all the information about a reservation.
+CREATE TABLE IF NOT EXISTS reservations (
+    -- id is the auto incrementing primary key.
+    id INTEGER PRIMARY KEY,
+
+    -- reservation_id is the unique identifier for the reservation.
+    reservation_id BLOB NOT NULL UNIQUE,
+
+    -- client_pubkey is the public key of the client.
+    client_pubkey BLOB NOT NULL,
+    
+    -- server_pubkey is the public key of the server.
+    server_pubkey BLOB NOT NULL,
+
+    -- expiry is the absolute expiry height of the reservation.
+    expiry INTEGER NOT NULL,
+
+    -- value is the value of the reservation.
+    value BIGINT NOT NULL,
+
+    -- client_key_family is the key family of the client.
+    client_key_family INTEGER NOT NULL,
+
+    -- client_key_index is the key index of the client.
+    client_key_index INTEGER NOT NULL,
+
+    -- initiation_height is the height at which the reservation was initiated.
+    initiation_height INTEGER NOT NULL,
+
+    -- tx_hash is the hash of the transaction that created the reservation.
+    tx_hash BLOB,
+
+    -- out_index is the index of the output that created the reservation.
+    out_index INTEGER,
+
+    -- confirmation_height is the height at which the reservation was confirmed.
+    confirmation_height INTEGER
+);
+
+CREATE INDEX IF NOT EXISTS reservations_reservation_id_idx ON reservations(reservation_id);
+
+-- reservation_updates contains all the updates to a reservation.
+CREATE TABLE IF NOT EXISTS reservation_updates (
+    -- id is the auto incrementing primary key.
+    id INTEGER PRIMARY KEY,
+
+    -- reservation_id is the unique identifier for the reservation.
+    reservation_id BLOB NOT NULL REFERENCES reservations(reservation_id),
+
+    -- update_state is the state of the reservation at the time of the update.
+    update_state TEXT NOT NULL,
+ 
+    -- update_timestamp is the timestamp of the update.
+    update_timestamp TIMESTAMP NOT NULL
+);
+

loopdb/sqlc/models.go

@@ -0,0 +1,66 @@
+-- name: CreateReservation :exec
+INSERT INTO reservations (
+    reservation_id,
+    client_pubkey,
+    server_pubkey,
+    expiry,
+    value,
+    client_key_family,
+    client_key_index,
+    initiation_height
+) VALUES (
+    $1,
+    $2,
+    $3,
+    $4,
+    $5,
+    $6,
+    $7,
+    $8
+);
+
+-- name: UpdateReservation :exec
+UPDATE reservations
+SET
+    tx_hash = $2,
+    out_index = $3,
+    confirmation_height = $4
+WHERE
+    reservations.reservation_id = $1;
+
+-- name: InsertReservationUpdate :exec
+INSERT INTO reservation_updates (
+    reservation_id,
+    update_state,
+    update_timestamp
+) VALUES (
+    $1,
+    $2,
+    $3
+);
+
+-- name: GetReservation :one
+SELECT
+    *
+FROM
+    reservations
+WHERE
+    reservation_id = $1;
+
+-- name: GetReservations :many
+SELECT
+    *
+FROM
+    reservations
+ORDER BY
+    id ASC;
+
+-- name: GetReservationUpdates :many
+SELECT
+    reservation_updates.*
+FROM
+    reservation_updates
+WHERE
+    reservation_id = $1
+ORDER BY
+    id ASC;