1 files changed, 57 insertions, 0 deletions
diff --git a/opendc-web/opendc-web-ui/src/data/query.js b/opendc-web/opendc-web-ui/src/data/query.js
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+++ b/opendc-web/opendc-web-ui/src/data/query.js
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+/*
+ * 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 { useMemo } from 'react'
+import { QueryClient } from 'react-query'
+import { useAuth } from '../auth'
+import { configureExperimentClient } from './experiments'
+import { configureProjectClient } from './project'
+import { configureTopologyClient } from './topology'
+
+let queryClient
+
+function createQueryClient(auth) {
+    const client = new QueryClient()
+    configureProjectClient(client, auth)
+    configureExperimentClient(client, auth)
+    configureTopologyClient(client, auth)
+    return client
+}
+
+function initializeQueryClient(auth) {
+    const _queryClient = queryClient ?? createQueryClient(auth)
+
+    // For SSG and SSR always create a new query client
+    if (typeof window === 'undefined') return _queryClient
+    // Create the query client once in the client
+    if (!queryClient) queryClient = _queryClient
+
+    return _queryClient
+}
+
+/**
+ * Obtain a cached query client.
+ */
+export function useNewQueryClient() {
+    const auth = useAuth()
+    return useMemo(() => initializeQueryClient(auth), []) // eslint-disable-line react-hooks/exhaustive-deps
+}