1 files changed, 43 insertions, 0 deletions
diff --git a/app/assets/javascripts/observability/client.js b/app/assets/javascripts/observability/client.js
new file mode 100644
index 00000000000..251c165e7dd
--- /dev/null
+++ b/app/assets/javascripts/observability/client.js
@@ -0,0 +1,43 @@
+import axios from '~/lib/utils/axios_utils';
+
+function enableTraces() {
+  // TODO remove mocks https://gitlab.com/gitlab-org/opstrace/opstrace/-/issues/2271
+  return new Promise((resolve) => {
+    setTimeout(() => {
+      resolve();
+    }, 1000);
+  });
+}
+
+function isTracingEnabled() {
+  // TODO remove mocks https://gitlab.com/gitlab-org/opstrace/opstrace/-/issues/2271
+  return new Promise((resolve) => {
+    setTimeout(() => {
+      // Currently relying on manual provisioning, hence assuming tracing is enabled
+      resolve(true);
+    }, 1000);
+  });
+}
+
+async function fetchTraces(tracingUrl) {
+  const { data } = await axios.get(tracingUrl, { withCredentials: true });
+  if (!Array.isArray(data.traces)) {
+    throw new Error('traces are missing/invalid in the response.'); // eslint-disable-line @gitlab/require-i18n-strings
+  }
+  return data.traces.map((t) => {
+    // aggregating duration on the client for now, but expecting to be coming from the backend
+    const duration = t.spans.reduce((acc, cur) => acc + cur.duration_nano, 0);
+    return {
+      ...t,
+      duration: duration / 1000,
+    };
+  });
+}
+
+export function buildClient({ provisioningUrl, tracingUrl }) {
+  return {
+    enableTraces: () => enableTraces(provisioningUrl),
+    isTracingEnabled: () => isTracingEnabled(provisioningUrl),
+    fetchTraces: () => fetchTraces(tracingUrl),
+  };
+}