[#1113] support load systemManage property sources for extension

spring-cloud-huawei-nacos/pom.xml

@@ -34,6 +34,10 @@
             <groupId>com.alibaba.cloud</groupId>
             <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
         </dependency>
+        <dependency>
+            <groupId>com.alibaba.cloud</groupId>
+            <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
+        </dependency>
         <dependency>
             <groupId>com.huaweicloud</groupId>
             <artifactId>spring-cloud-huawei-governance</artifactId>

spring-cloud-huawei-nacos/src/main/java/com/huaweicloud/nacos/NacosAdaptersBootstrapConfiguration.java

@@ -0,0 +1,37 @@
+/*
+
+ * Copyright (C) 2020-2022 Huawei Technologies Co., Ltd. All rights reserved.
+
+ * 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.
+ */
+package com.huaweicloud.nacos;
+
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import com.alibaba.cloud.nacos.ConditionalOnNacosDiscoveryEnabled;
+import com.alibaba.cloud.nacos.NacosConfigManager;
+import com.huaweicloud.nacos.config.SystemManagedPropertySourceLocator;
+
+@Configuration
+@ConditionalOnNacosDiscoveryEnabled
+@ConditionalOnProperty(value = "spring.cloud.servicecomb.system.property.load.enabled", havingValue = "true",
+    matchIfMissing = true)
+public class NacosAdaptersBootstrapConfiguration {
+  @Bean
+  public SystemManagedPropertySourceLocator servicecombNacosPropertySourceLocator(
+      NacosConfigManager nacosConfigManager) {
+    return new SystemManagedPropertySourceLocator(nacosConfigManager);
+  }
+}

spring-cloud-huawei-nacos/src/main/java/com/huaweicloud/nacos/NacosConst.java

@@ -0,0 +1,33 @@
+/*
+
+ * Copyright (C) 2020-2022 Huawei Technologies Co., Ltd. All rights reserved.
+
+ * 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.
+ */
+package com.huaweicloud.nacos;
+
+public class NacosConst {
+  public static final String SERVICECOMB_NACOS_CONFIG_DATA_ID = "spring.cloud.servicecomb.nacos.config.dataId";
+
+  public static final String SERVICECOMB_NACOS_CONFIG_GROUP = "spring.cloud.servicecomb.nacos.config.group";
+
+  public static final String SERVICECOMB_NACOS_CONFIG_REFRESH = "spring.cloud.servicecomb.nacos.config.refresh";
+
+  public static final String SERVICECOMB_NACOS_CONFIG_TIMEOUT = "spring.cloud.servicecomb.nacos.config.timeout";
+
+  public static final String SERVICECOMB_NACOS_PROPERTY_SOURCE_NAME = "SERVICECOMB-NACOS";
+
+  public static final String SECURITY_CONFIG_DATA_ID_PREFIX = "cse-app-security-";
+
+  public static final String SECURITY_CONFIG_DATA_ID_SUFFIX = ".yaml";
+}

spring-cloud-huawei-nacos/src/main/java/com/huaweicloud/nacos/config/SystemManagedPropertySourceLocator.java

@@ -0,0 +1,110 @@
+/*
+
+ * Copyright (C) 2020-2022 Huawei Technologies Co., Ltd. All rights reserved.
+
+ * 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.
+ */
+package com.huaweicloud.nacos.config;
+
+import java.util.Collections;
+import java.util.Date;
+import java.util.List;
+
+import org.apache.commons.lang3.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.cloud.bootstrap.config.PropertySourceLocator;
+import org.springframework.core.annotation.Order;
+import org.springframework.core.env.CompositePropertySource;
+import org.springframework.core.env.Environment;
+import org.springframework.core.env.PropertySource;
+
+import com.alibaba.cloud.nacos.NacosConfigManager;
+import com.alibaba.cloud.nacos.NacosPropertySourceRepository;
+import com.alibaba.cloud.nacos.client.NacosPropertySource;
+import com.alibaba.cloud.nacos.parser.NacosDataParserHandler;
+import com.alibaba.nacos.api.config.ConfigService;
+import com.huaweicloud.nacos.NacosConst;
+
+@Order(0)
+public class SystemManagedPropertySourceLocator implements PropertySourceLocator {
+  private static final Logger LOGGER = LoggerFactory.getLogger(SystemManagedPropertySourceLocator.class);
+
+  private final ConfigService configService;
+
+  private long timeout;
+
+  private String dataId;
+
+  private String group;
+
+  private boolean isRefresh;
+
+  public SystemManagedPropertySourceLocator(NacosConfigManager nacosConfigManager) {
+    this.configService = nacosConfigManager.getConfigService();
+  }
+
+  @Override
+  public PropertySource<?> locate(Environment environment) {
+    dataId = environment.getProperty(NacosConst.SERVICECOMB_NACOS_CONFIG_DATA_ID, String.class,
+        buildDefaultDataId(environment));
+    group = environment.getProperty(NacosConst.SERVICECOMB_NACOS_CONFIG_GROUP, String.class,
+        "cse-app-security-group");
+    // isRefresh is only true can achieve dynamic updates
+    isRefresh = environment.getProperty(NacosConst.SERVICECOMB_NACOS_CONFIG_REFRESH, boolean.class,
+        true);
+    timeout = environment.getProperty(NacosConst.SERVICECOMB_NACOS_CONFIG_TIMEOUT, Long.class, 3000L);
+    CompositePropertySource composite = new CompositePropertySource(NacosConst.SERVICECOMB_NACOS_PROPERTY_SOURCE_NAME);
+    loadServicecombNacosProperties(composite);
+    return composite;
+  }
+
+  private String buildDefaultDataId(Environment environment) {
+    String serviceName = environment.getProperty("spring.application.name", String.class, "");
+    return NacosConst.SECURITY_CONFIG_DATA_ID_PREFIX + serviceName + NacosConst.SECURITY_CONFIG_DATA_ID_SUFFIX;
+  }
+
+  private void loadServicecombNacosProperties(CompositePropertySource composite) {
+    if (StringUtils.isEmpty(dataId) || StringUtils.isEmpty(group)) {
+      return;
+    }
+    String fileExtension = NacosDataParserHandler.getInstance().getFileExtension(dataId);
+    NacosPropertySource propertySource = new NacosPropertySource(queryNacosPropertyData(fileExtension),
+        group, dataId, new Date(), isRefresh);
+    // add nacos listener
+    NacosPropertySourceRepository.collectNacosPropertySource(propertySource);
+    addFirstPropertySource(composite, propertySource);
+  }
+
+  private List<PropertySource<?>> queryNacosPropertyData(String fileExtension) {
+    try {
+      String data = configService.getConfig(dataId, group, timeout);
+      if (StringUtils.isEmpty(data)) {
+        LOGGER.warn("empty nacos configuration, dataId[{}], group[{}]", dataId, group);
+        return Collections.emptyList();
+      }
+      return NacosDataParserHandler.getInstance().parseNacosData(dataId, data, fileExtension);
+    } catch (Exception e) {
+      LOGGER.error("get data from Nacos failed, dataId {} ", dataId, e);
+    }
+    return Collections.emptyList();
+  }
+
+  private void addFirstPropertySource(final CompositePropertySource composite,
+      NacosPropertySource nacosPropertySource) {
+    if (null == nacosPropertySource || nacosPropertySource.getSource().isEmpty()) {
+      return;
+    }
+    composite.addFirstPropertySource(nacosPropertySource);
+  }
+}

spring-cloud-huawei-nacos/src/main/resources/META-INF/spring.factories

@@ -15,6 +15,8 @@
 ## See the License for the specific language governing permissions and
 ## limitations under the License.
 ## ---------------------------------------------------------------------------
+org.springframework.cloud.bootstrap.BootstrapConfiguration=\
+  com.huaweicloud.nacos.NacosAdaptersBootstrapConfiguration
 org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
   com.huaweicloud.nacos.NacosAdaptersAutoConfiguration,\
   com.huaweicloud.nacos.graceful.NacosGracefulAutoConfiguration