Merge branch 'master' of https://github.com/browngraphicslab/Dash-Web

1 files changed, 34 insertions, 0 deletions

diff --git a/src/client/util/ClientDiagnostics.ts b/src/client/util/ClientDiagnostics.ts
new file mode 100644
index 000000000..0a213aa1c
--- /dev/null
+++ b/src/client/util/ClientDiagnostics.ts
@@ -0,0 +1,34 @@
+export namespace ClientDiagnostics {
+
+    export async function start() {
+
+        let serverPolls = 0;
+        const serverHandle = setInterval(async () => {
+            if (++serverPolls === 20) {
+                alert("Your connection to the server has been terminated.");
+                clearInterval(serverHandle);
+            }
+            await fetch("/serverHeartbeat");
+            serverPolls--;
+        }, 1000 * 15);
+
+        let executed = false;
+        let solrHandle: NodeJS.Timeout | undefined;
+        const handler = async () => {
+            const response = await fetch("/solrHeartbeat");
+            if (!(await response.json()).running) {
+                if (!executed) {
+                    alert("Looks like SOLR is not running on your machine.");
+                    executed = true;
+                    solrHandle && clearInterval(solrHandle);
+                }
+            }
+        };
+        await handler();
+        if (!executed) {
+            solrHandle = setInterval(handler, 1000 * 15);
+        }
+
+    }
+
+}
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