Brotli compression support

.github/workflows/test.yaml

@@ -45,7 +45,10 @@ jobs:
 
       - name: Install template app
         run: |
-          git clone https://github.com/cesium-ml/baselayer_template_app
+          git clone https://github.com/Theodlz/baselayer_template_app
+          cd baselayer_template_app
+          git checkout brotli
+          cd ..
           cp -rf baselayer baselayer_template_app/
 
       - uses: actions/cache@v3

services/nginx/mime.types

@@ -57,6 +57,7 @@ application/geopackage+sqlite3			gpkg;
 application/gltf-buffer				glbin glbuf;
 application/gml+xml				gml;
 application/gzip				gz tgz;
+application/br                  br;
 application/hyperstudio				stk;
 application/inkml+xml				ink inkml;
 application/ipfix				ipfix;

services/nginx/nginx.conf.template

@@ -1,6 +1,12 @@
 error_log log/error.log error;
 pid run/nginx.pid;
 
+{% if server.use_brotli and not server.is_macos %}
+load_module modules/ngx_http_brotli_filter_module.so; # for compressing responses on-the-fly
+load_module modules/ngx_http_brotli_static_module.so; # for serving pre-compressed files
+{% endif %}
+
+
 # Choose number of NGINX worker processes based on number of CPUs
 worker_processes auto;
 
@@ -21,6 +27,19 @@ http {
              text/javascript
              application/javascript;
 
+  {% if server.use_brotli %}
+  # also enable brotli compression
+  brotli on;
+  brotli_comp_level 6;
+  brotli_types text/plain
+               text/css
+               application/json
+               application/x-javascript
+               application/xml
+               text/javascript
+               application/javascript;
+  {% endif %}
+
   # Only retry if there was a communication error, not a timeout
   # on the Tornado server (to avoid propagating "queries of death"
   # to all frontends)

tools/fill_conf_values.py

@@ -36,12 +36,35 @@ def hash_filter(string, htype):
     return h.hexdigest()
 
 
+def nginx_brotli_module_installed():
+    # we run the `nginx -V` command to check if the nginx server is compiled with brotli support
+    # if it is, we'll find "brotli" in the output
+    import subprocess
+
+    try:
+        output = subprocess.check_output(
+            ["nginx", "-V"], stderr=subprocess.STDOUT
+        ).decode("utf-8")
+        return "brotli" in output
+    except subprocess.CalledProcessError:
+        return False
+
+
+def is_macos():
+    return os.uname().sysname == "Darwin"
+
+
 custom_filters = {"md5sum": md5sum, "version": version, "hash": hash_filter}
 
+USE_BROTLI = nginx_brotli_module_installed()
+IS_MACOS = is_macos()
+
 
 def fill_config_file_values(template_paths):
     log("Compiling configuration templates")
     env, cfg = load_env()
+    cfg["server"]["use_brotli"] = USE_BROTLI
+    cfg["server"]["is_macos"] = IS_MACOS
 
     for template_path in template_paths:
         with status(template_path):