feat(policy): 1256 resource mapping groups db support

service/policy/db/migrations/20240806142109_add_resource_mapping_groups.md

@@ -0,0 +1,32 @@
+# Diagram for 20240806142109_add_resource_mapping_groups.sql
+
+## Background
+
+This schema reflects the addition of a `resource_mapping_groups` table, allowing existing Resource Mappings to be grouped by namespace and a common name. The migration also updates the `resource_mappings` table to include a `group_id` column, which will be used to optionally associate a Resource Mapping with a group.
+
+# ERD
+
+```mermaid
+---
+title: Database Schema Mermaid Diagram
+---
+
+erDiagram
+
+    ResourceMappingGroup ||--|{ ResourceMapping : has
+
+    ResourceMappingGroup {
+        uuid         id                 PK
+        uuid         namespace_id
+        varchar      name
+        compIdx      comp_key           UK "namespace_id + name"
+    }
+
+    ResourceMapping {
+        uuid         id                 PK
+        uuid         attribute_value_id FK
+        varchar[]    terms
+        jsonb        metadata
+        uuid         group_id           FK
+    }
+```

service/policy/db/migrations/20240806142109_add_resource_mapping_groups.sql

@@ -0,0 +1,29 @@
+-- +goose Up
+-- +goose StatementBegin
+
+CREATE TABLE IF NOT EXISTS resource_mapping_groups (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    namespace_id UUID NOT NULL REFERENCES attribute_namespaces(id),
+    name VARCHAR NOT NULL,
+    UNIQUE(namespace_id, name)
+);
+
+COMMENT ON TABLE resource_mapping_groups IS 'Table to store the groups of resource mappings by unique namespace and group name combinations';
+COMMENT ON COLUMN resource_mapping_groups.id IS 'Primary key for the table';
+COMMENT ON COLUMN resource_mapping_groups.namespace_id IS 'Foreign key to the namespace of the attribute';
+COMMENT ON COLUMN resource_mapping_groups.name IS 'Name for the group of resource mappings';
+
+ALTER TABLE resource_mappings ADD COLUMN group_id UUID REFERENCES resource_mapping_groups(id) ON DELETE SET NULL;
+
+COMMENT ON COLUMN resource_mappings.group_id IS 'Foreign key to the parent group of the resource mapping';
+
+-- +goose StatementEnd
+
+-- +goose Down
+-- +goose StatementBegin
+
+ALTER TABLE resource_mappings DROP COLUMN group_id;
+
+DROP TABLE IF EXISTS resource_mapping_groups;
+
+-- +goose StatementEnd

service/policy/db/query.sql

@@ -1,4 +1,6 @@
+---------------------------------------------------------------- 
 -- KEY ACCESS SERVERS
+----------------------------------------------------------------
 
 -- name: ListKeyAccessServers :many
 SELECT id, uri, public_key,
@@ -27,3 +29,27 @@ RETURNING id;
 -- name: DeleteKeyAccessServer :execrows
 DELETE FROM key_access_servers WHERE id = $1;
 
+---------------------------------------------------------------- 
+-- RESOURCE MAPPING GROUPS
+----------------------------------------------------------------
+
+-- name: GetResourceMappingGroup :one
+SELECT id, namespace_id, name
+FROM resource_mapping_groups
+WHERE id = $1;
+
+-- name: CreateResourceMappingGroup :one
+INSERT INTO resource_mapping_groups (namespace_id, name)
+VALUES ($1, $2)
+RETURNING id;
+
+-- name: UpdateResourceMappingGroup :one
+UPDATE resource_mapping_groups
+SET
+    namespace_id = coalesce(sqlc.narg('namespace_id'), namespace_id),
+    name = coalesce(sqlc.narg('name'), name)
+WHERE id = $1
+RETURNING id;
+
+-- name: DeleteResourceMappingGroup :execrows
+DELETE FROM resource_mapping_groups WHERE id = $1;