init

docs/ci/uri-caching.conf

@@ -0,0 +1,44 @@
+set $proxy_authorization '';
+
+set_by_lua $proxyuri '
+	local unescaped =  ngx.unescape_uri(ngx.var.arg_uri);
+	local it, err = ngx.re.match(unescaped, "(https?://)(.*@)?([^/]*)(/.*)?");
+	if not it then
+		-- Hack to cause nginx to return 404
+		return "http://localhost/404"
+	end
+
+	local scheme = it[1];
+	local authstring = it[2];
+	local host = it[3];
+	local query = it[4];
+
+	if ngx.var.http_authorization and ngx.var.http_authorization ~= "" then
+		ngx.var.proxy_authorization = ngx.var.http_authorization;
+	elseif authstring then
+		auth = string.sub(authstring, 0, -2);
+		auth64 = ngx.encode_base64(auth);
+		ngx.var.proxy_authorization = "Basic " .. auth64;
+	end
+
+	-- Default to / if none is set to avoid using the request_uri query
+	if not query then
+		query = "/";
+	end
+
+	return scheme .. host .. query;
+';
+
+# Rewrite the location header to redirect back to this server. Do
+# this using lua header filtering to allow for url encoding the original
+# location header for use as a query parameter.
+header_filter_by_lua_block {
+	if ngx.header.location then
+		ngx.header.location = "/cache?uri=" .. ngx.escape_uri(ngx.header.location);
+	end
+}
+
+add_header X-GG-Cache-Status $upstream_cache_status;
+proxy_set_header Authorization $proxy_authorization;
+
+proxy_pass $proxyuri;