ui: Simplify data fetching in frontend

This pull request aims to simplify the data fetching logic in the OpenDC frontend.
Previously, the frontend used Redux extensively to sync the server state with the 
client state, which introduced a lot of unnecessary complexity. 

With this pull request, we move most of the data fetching logic out of Redux and 
instead use React Query to perform the logic for fetching and caching API requests. 

* Move all server data except topologies outside Redux
* Use React Query for fetching server data
* (De)normalize topology using Normalizr
* Remove current ids state from Redux 
* Combine fetching of project relations

1 files changed, 47 insertions, 0 deletions

diff --git a/opendc-web/opendc-web-ui/src/util/topology-schema.js b/opendc-web/opendc-web-ui/src/util/topology-schema.js
new file mode 100644
index 00000000..9acd688b
--- /dev/null
+++ b/opendc-web/opendc-web-ui/src/util/topology-schema.js
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2021 AtLarge Research
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+import { schema } from 'normalizr'
+
+const Cpu = new schema.Entity('cpu', {}, { idAttribute: '_id' })
+const Gpu = new schema.Entity('gpu', {}, { idAttribute: '_id' })
+const Memory = new schema.Entity('memory', {}, { idAttribute: '_id' })
+const Storage = new schema.Entity('storage', {}, { idAttribute: '_id' })
+
+export const Machine = new schema.Entity(
+    'machine',
+    {
+        cpus: [Cpu],
+        gpus: [Gpu],
+        memories: [Memory],
+        storages: [Storage],
+    },
+    { idAttribute: '_id' }
+)
+
+export const Rack = new schema.Entity('rack', { machines: [Machine] }, { idAttribute: '_id' })
+
+export const Tile = new schema.Entity('tile', { rack: Rack }, { idAttribute: '_id' })
+
+export const Room = new schema.Entity('room', { tiles: [Tile] }, { idAttribute: '_id' })
+
+export const Topology = new schema.Entity('topology', { rooms: [Room] }, { idAttribute: '_id' })