Add latest changes from gitlab-org/gitlab@master

1 files changed, 42 insertions, 0 deletions

diff --git a/app/assets/javascripts/lib/utils/poll_until_complete.js b/app/assets/javascripts/lib/utils/poll_until_complete.js
new file mode 100644
index 00000000000..199d0e6f0f7
--- /dev/null
+++ b/app/assets/javascripts/lib/utils/poll_until_complete.js
@@ -0,0 +1,42 @@
+import axios from '~/lib/utils/axios_utils';
+import Poll from './poll';
+import httpStatusCodes from './http_status';
+
+/**
+ * Polls an endpoint until it returns either a 200 OK or a error status.
+ * The Poll-Interval header in the responses are used to determine how
+ * frequently to poll.
+ *
+ * Once a 200 OK is received, the promise resolves with that response. If an
+ * error status is received, the promise rejects with the error.
+ *
+ * @param {string} url - The URL to poll.
+ * @param {Object} [config] - The config to provide to axios.get().
+ * @returns {Promise}
+ */
+export default (url, config = {}) =>
+  new Promise((resolve, reject) => {
+    const eTagPoll = new Poll({
+      resource: {
+        axiosGet(data) {
+          return axios.get(data.url, {
+            headers: {
+              'Content-Type': 'application/json',
+            },
+            ...data.config,
+          });
+        },
+      },
+      data: { url, config },
+      method: 'axiosGet',
+      successCallback: response => {
+        if (response.status === httpStatusCodes.OK) {
+          resolve(response);
+          eTagPoll.stop();
+        }
+      },
+      errorCallback: reject,
+    });
+
+    eTagPoll.makeRequest();
+  });