1 files changed, 32 insertions, 0 deletions
diff --git a/app/assets/javascripts/monitoring/stores/getters.js b/app/assets/javascripts/monitoring/stores/getters.js
new file mode 100644
index 00000000000..3eddd52705d
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+++ b/app/assets/javascripts/monitoring/stores/getters.js
@@ -0,0 +1,32 @@
+const metricsIdsInPanel = panel =>
+  panel.metrics.filter(metric => metric.metricId && metric.result).map(metric => metric.metricId);
+
+/**
+ * Getter to obtain the list of metric ids that have data
+ *
+ * Useful to understand which parts of the dashboard should
+ * be displayed. It is a Vuex Method-Style Access getter.
+ *
+ * @param {Object} state
+ * @returns {Function} A function that returns an array of
+ * metrics in the dashboard that contain results, optionally
+ * filtered by group key.
+ */
+export const metricsWithData = state => groupKey => {
+  let groups = state.dashboard.panel_groups;
+  if (groupKey) {
+    groups = groups.filter(group => group.key === groupKey);
+  }
+
+  const res = [];
+  groups.forEach(group => {
+    group.panels.forEach(panel => {
+      res.push(...metricsIdsInPanel(panel));
+    });
+  });
+
+  return res;
+};
+
+// prevent babel-plugin-rewire from generating an invalid default during karma tests
+export default () => {};