refactor: add jdk8 compile check

Signed-off-by: moxiaoying <[email protected]>

.github/workflows/java8_compile.yml

@@ -0,0 +1,35 @@
+# Copyright 2024 OpenFacade Authors
+#
+# Licensed 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.
+
+name: java8 compile
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  java8_compile:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Maven Central Repository
+        uses: actions/setup-java@v4
+        with:
+          java-version: '8'
+          distribution: 'temurin'
+      - name: compile
+        run: mvn -B clean package -Dmaven.test.skip=true

pulsar-admin/src/main/java/io/github/protocol/pulsar/admin/jdk/InnerHttpClient.java

@@ -29,7 +29,7 @@ public class InnerHttpClient {
 
     public InnerHttpClient(Configuration conf) {
         HttpClientConfig.Builder clientConfigBuilder = new HttpClientConfig.Builder();
-        clientConfigBuilder.engine(HttpClientEngine.JAVA);
+        clientConfigBuilder.engine(HttpClientEngine.Java);
         if (conf.tlsEnabled) {
             TlsConfig.Builder tlsConfigBuilder = new TlsConfig.Builder();
             io.github.protocol.pulsar.admin.api.TlsConfig tlsConfig = conf.tlsConfig;