Codify common mirage scenarios and make it easy to switch between

ui/config/environment.js

@@ -20,6 +20,9 @@ module.exports = function(environment) {
 
     APP: {
       blockingQueries: true,
+      mirageScenario: 'smallCluster',
+      mirageWithNamespaces: false,
+      mirageWithTokens: true,
     },
   };
 

ui/mirage/scenarios/default.js

@@ -1,16 +1,103 @@
+import config from 'nomad-ui/config/environment';
+
+const withNamespaces = getConfigValue('mirageWithNamespaces', false);
+const withTokens = getConfigValue('mirageWithTokens', true);
+
+const allScenarios = {
+  smallCluster,
+  mediumCluster,
+  largeCluster,
+  massiveCluster,
+  allJobTypes,
+  allNodeTypes,
+  emptyCluster,
+};
+
+const scenario = getConfigValue('mirageScenario', 'emptyCluster');
+
 export default function(server) {
+  const activeScenario = allScenarios[scenario];
+  if (!activeScenario) {
+    throw new Error(
+      `Selected Mirage scenario does not exist.\n\n${scenario} not in list: \n\n\t${Object.keys(
+        allScenarios
+      ).join('\n\t')}`
+    );
+  }
+
+  if (withNamespaces) createNamespaces(server);
+  if (withTokens) createTokens(server);
+  activeScenario(server);
+}
+
+// Scenarios
+
+function smallCluster(server) {
+  server.createList('agent', 3);
+  server.createList('node', 5);
+  server.createList('job', 5);
+}
+
+function mediumCluster(server) {
   server.createList('agent', 3);
   server.createList('node', 50);
+  server.createList('job', 25);
+}
 
-  server.createList('namespace', 3);
+// Due to Mirage performance, large cluster scenarios will be slow
+function largeCluster(server) {
+  server.createList('agent', 5);
+  server.createList('node', 1000);
+  server.createList('job', 100);
+}
 
-  server.createList('job', 10);
-  server.createList('job', 5, { failedPlacements: true });
+function massiveCluster(server) {
+  server.createList('agent', 7);
+  server.createList('node', 5000);
+  server.createList('job', 2000);
+}
 
+function allJobTypes(server) {
+  server.createList('agent', 3);
+  server.createList('node', 5);
+
+  server.create('job', { type: 'service' });
+  server.create('job', { type: 'batch' });
+  server.create('job', { type: 'system' });
+  server.create('job', 'periodic');
+  server.create('job', 'parameterized');
+  server.create('job', { failedPlacements: true });
+}
+
+function allNodeTypes(server) {
+  server.createList('agent', 3);
+
+  server.create('node');
+  server.create('node', 'forceIPv4');
+  server.create('node', 'draining');
+  server.create('node', 'forcedDraining');
+  server.create('node', 'noDeadlineDraining');
+  server.create('node', 'withMeta');
+
+  server.createList('job', 3);
+}
+
+function emptyCluster(server) {
+  server.create('agent');
+  server.create('node');
+}
+
+// Behaviors
+
+function createTokens(server) {
   server.createList('token', 3);
   logTokens(server);
 }
 
+function createNamespaces(server) {
+  server.createList('namespace', 3);
+}
+
 /* eslint-disable */
 function logTokens(server) {
   console.log('TOKENS:');
@@ -23,4 +110,14 @@ Accessor: ${token.accessorId}
 `);
   });
 }
+
+function getConfigValue(variableName, defaultValue) {
+  const value = config.APP[variableName];
+  if (value !== undefined) return value;
+
+  console.warn(
+    `No ENV.APP value set for "${variableName}". Defaulting to "${defaultValue}". To set a custom value, modify config/environment.js`
+  );
+  return defaultValue;
+}
 /* eslint-enable */