From 2b94c3e24cf5c96a223d223be5ae23d9f1813d60 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Moritz=20R=C3=B6hrich?= <moritz.rohrich@suse.com>
Date: Mon, 6 Nov 2023 16:04:47 +0100
Subject: [PATCH] object store: proxy object store UI
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Proxy object store UI in the nginx of the Longhorn UI. This allows for
port-forwarding of the Longhorn UI to also access the administrative
interface of the s3gw UI instances

Signed-off-by: Moritz Röhrich <moritz.rohrich@suse.com>
---
 Dockerfile                        |  8 +++++---
 entrypoint.sh                     | 13 +++++++++++++
 nginx.conf.template               | 11 +++++++++++
 src/routes/objectStorage/index.js |  2 +-
 4 files changed, 30 insertions(+), 4 deletions(-)
 create mode 100755 entrypoint.sh

diff --git a/Dockerfile b/Dockerfile
index 098bf7a2c..85275f75b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -13,7 +13,7 @@ RUN npm run build
 FROM registry.suse.com/bci/bci-base:15.4
 
 RUN zypper -n ref && \
-	zypper -n install curl libxml2 bash gettext shadow nginx
+	zypper -n install curl libxml2 bash gettext shadow nginx awk
 
 SHELL [ "/bin/bash", "-o", "pipefail", "-c" ]
 
@@ -21,11 +21,13 @@ RUN mkdir -p web/dist
 WORKDIR /web
 
 COPY --from=builder /web/dist /web/dist
-COPY --from=builder /web/nginx.conf.template /etc/nginx/nginx.conf.template
+COPY nginx.conf.template /etc/nginx/nginx.conf.template
+COPY entrypoint.sh /entrypoint.sh
 
 EXPOSE 8000
 ENV LONGHORN_MANAGER_IP http://localhost:9500
 ENV LONGHORN_UI_PORT 8000
+ENV LONGHORN_NAMESPACE longhorn-system
 
 RUN mkdir -p /var/config/nginx/ \
  && cp -r /etc/nginx/* /var/config/nginx/ \
@@ -35,4 +37,4 @@ RUN mkdir -p /var/config/nginx/ \
 # Use the uid of the default user (nginx) from the installed nginx package
 USER 499
 
-CMD ["/bin/bash", "-c", "envsubst '${LONGHORN_MANAGER_IP},${LONGHORN_UI_PORT}' < /etc/nginx/nginx.conf.template > /var/config/nginx/nginx.conf && nginx -c /var/config/nginx/nginx.conf -g 'daemon off;'"]
+ENTRYPOINT ["/entrypoint.sh"]
diff --git a/entrypoint.sh b/entrypoint.sh
new file mode 100755
index 000000000..2cf07a411
--- /dev/null
+++ b/entrypoint.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+
+NAMESERVER_IP="$(grep -E '^nameserver' /etc/resolv.conf | head -n 1 | awk '{print $2}')"
+LONGHORN_NAMESPACE_DOMAIN="$(grep -E '^search' /etc/resolv.conf | head -n 1 | awk '{print $2}')"
+
+export NAMESERVER_IP
+export LONGHORN_NAMESPACE_DOMAIN
+
+envsubst '${LONGHORN_MANAGER_IP},${LONGHORN_UI_PORT},${LONGHORN_NAMESPACE_DOMAIN},${NAMESERVER_IP}' \
+  < /etc/nginx/nginx.conf.template \
+  > /var/config/nginx/nginx.conf
+
+nginx -c /var/config/nginx/nginx.conf
diff --git a/nginx.conf.template b/nginx.conf.template
index cb45f62b1..ba6f938dc 100644
--- a/nginx.conf.template
+++ b/nginx.conf.template
@@ -1,5 +1,11 @@
 events { worker_connections 1024; }
+daemon off;
+
+error_log /dev/stdout info;
+
 http {
+    access_log /dev/stdout;
+
     server {
         gzip on;
         gzip_min_length 1k;
@@ -38,6 +44,11 @@ http {
              root /web/dist;
         }
 
+        location ~ ^/objectstore/([^/]+) {
+            resolver ${NAMESERVER_IP};
+            proxy_pass http://$1.${LONGHORN_NAMESPACE_DOMAIN}:8080;
+        }
+
         location / {
             root /web/dist;
             index  index.html;
diff --git a/src/routes/objectStorage/index.js b/src/routes/objectStorage/index.js
index b1535e8eb..b9acded6c 100644
--- a/src/routes/objectStorage/index.js
+++ b/src/routes/objectStorage/index.js
@@ -183,7 +183,7 @@ class ObjectStore extends React.Component {
       },
       administrateObjectStore: (record) => {
         if (record.name?.length) {
-          window.open(record.name, '_blank', 'noreferrer')
+          window.open(`objectstore/${record.name}/`, '_blank', 'noreferrer')
         }
       },
       deleteObjectStore: (record) => {