Initial snapshot - OpenTelemetry demo 2.1.3 -f

1 files changed, 20 insertions, 0 deletions

diff --git a/src/frontend/utils/imageLoader.js b/src/frontend/utils/imageLoader.js
new file mode 100644
index 0000000..3718b0a
--- /dev/null
+++ b/src/frontend/utils/imageLoader.js
@@ -0,0 +1,20 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+/*
+  * We connect to image-provider through the envoy proxy, straight from the browser, for this we need to know the current hostname and port.
+  * During building and serverside rendering, these are undefined so we use some conditionals and default values.
+  */
+let hostname = "localhost";
+let port = 8080;
+let protocol = "http";
+
+if (typeof window !== "undefined" && window.location) {
+  hostname = window.location.hostname;
+  port = window.location.port ? parseInt(window.location.port, 10) : (window.location.protocol === "https:" ? 443 : 80);
+  protocol = window.location.protocol.slice(0, -1); // Remove trailing ':'
+}
+
+export default function imageLoader({ src, width, quality }) {
+  // We pass down the optimisation request to the image-provider service here, without this, nextJs would try to use internal optimiser which is not working with the external image-provider.
+  return `${protocol}://${hostname}:${port}/${src}?w=${width}&q=${quality || 75}`
+}