[7.4] [Infra + Logs UI] Handle absence of the spaces plugin (#… (#46345)

Backports the following commits to 7.4:
 - [Infra + Logs UI] Handle absence of the spaces plugin (#46241)

x-pack/legacy/plugins/infra/public/pages/logs/analysis/page_providers.tsx

@@ -5,14 +5,14 @@
  */
 
 import React, { useContext } from 'react';
-import chrome from 'ui/chrome';
 
 import { LogAnalysisJobs } from '../../../containers/logs/log_analysis';
 import { Source } from '../../../containers/source';
+import { useKibanaSpaceId } from '../../../utils/use_kibana_space_id';
 
 export const AnalysisPageProviders: React.FunctionComponent = ({ children }) => {
   const { sourceId, source } = useContext(Source.Context);
-  const spaceId = chrome.getInjected('activeSpace').space.id;
+  const spaceId = useKibanaSpaceId();
 
   return (
     <LogAnalysisJobs.Provider

x-pack/legacy/plugins/infra/public/utils/use_kibana_injected_var.ts

@@ -0,0 +1,19 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+import { npSetup } from 'ui/new_platform';
+
+/**
+ * This hook provides access to the "injected variables" provided by the
+ * platform. While it doesn't need to be a hook right now, it has been written
+ * as one in order to keep the API stable despite the upcoming injection
+ * through the context after the new platform migration.
+ */
+export const useKibanaInjectedVar = (name: string, defaultValue?: unknown) => {
+  const injectedMetadata = npSetup.core.injectedMetadata;
+
+  return injectedMetadata.getInjectedVar(name, defaultValue);
+};

x-pack/legacy/plugins/infra/public/utils/use_kibana_space_id.ts

@@ -0,0 +1,23 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+import * as rt from 'io-ts';
+
+import { useKibanaInjectedVar } from './use_kibana_injected_var';
+
+export const useKibanaSpaceId = (): string => {
+  const activeSpace = useKibanaInjectedVar('activeSpace');
+
+  return activeSpaceRT
+    .decode(activeSpace)
+    .fold(() => 'default', decodedActiveSpace => decodedActiveSpace.space.id);
+};
+
+const activeSpaceRT = rt.type({
+  space: rt.type({
+    id: rt.string,
+  }),
+});

x-pack/legacy/plugins/infra/server/lib/adapters/framework/kibana_framework_adapter.ts

@@ -153,7 +153,13 @@ export class InfraKibanaBackendFrameworkAdapter implements InfraBackendFramework
   }
 
   public getSpaceId(request: InfraFrameworkRequest): string {
-    return this.server.plugins.spaces.getSpaceId(request[internalInfraFrameworkRequest]);
+    const spacesPlugin = this.server.plugins.spaces;
+
+    if (spacesPlugin && typeof spacesPlugin.getSpaceId === 'function') {
+      return spacesPlugin.getSpaceId(request[internalInfraFrameworkRequest]);
+    } else {
+      return 'default';
+    }
   }
 
   public getSavedObjectsService() {