fix(nacos): declare nacos-stream shared dict in the stream subsystem (#13541)

Author: AlinsRan

apisix/cli/ngx_tpl.lua

@@ -149,6 +149,7 @@ stream {
     lua_shared_dict lrucache-lock-stream {* stream.lua_shared_dict["lrucache-lock-stream"] *};
     lua_shared_dict etcd-cluster-health-check-stream {* stream.lua_shared_dict["etcd-cluster-health-check-stream"] *};
     lua_shared_dict worker-events-stream {* stream.lua_shared_dict["worker-events-stream"] *};
+    lua_shared_dict nacos-stream 10m;
 
     {% if enabled_discoveries["tars"] then %}
     lua_shared_dict tars-stream {* stream.lua_shared_dict["tars-stream"] *};

t/cli/test_discovery_nacos_stream.sh

@@ -0,0 +1,62 @@
+#!/usr/bin/env bash
+
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+. ./t/cli/common.sh
+
+# stream is only fully supported on the customed apisix-nginx-module build
+exit_if_not_customed_nginx
+
+# Nacos discovery picks its shared dict by subsystem (discovery/nacos/init.lua):
+#     local dict_name = is_http and "nacos" or "nacos-stream"
+# and init_worker() raises 'lua_shared_dict "nacos-stream" not configured' when
+# the dict is missing. The `nacos-stream` dict must therefore be declared in the
+# stream block, otherwise enabling nacos discovery with the stream subsystem on
+# aborts the stream worker at startup.
+echo '
+apisix:
+    proxy_mode: stream
+    enable_admin: false
+    stream_proxy:
+        tcp:
+            - addr: 9100
+discovery:
+    nacos:
+        host:
+            - "http://127.0.0.1:8848"
+' > conf/config.yaml
+
+make run
+# wait until the stream worker accepts connections, which only happens after
+# init_worker has run -- avoids a race where the log is grepped too early
+wait_for_tcp 127.0.0.1 9100
+make stop
+
+# guard against a false pass if nginx never started for an unrelated reason
+if grep -q "\[emerg\]" logs/error.log; then
+    echo "failed: nginx did not start"
+    cat logs/error.log
+    exit 1
+fi
+
+if grep -q 'lua_shared_dict "nacos-stream" not configured' logs/error.log; then
+    echo "failed: nacos-stream shared dict is not declared in the stream subsystem"
+    exit 1
+fi
+
+echo "passed: nacos discovery initializes in the stream subsystem"