check the required fields of polaris when the config mode starts (#1470)

* check the required fields of polaris when the config mode starts

* Modify the format of polaris in BootstrapConfigProperties

* Define static constants of polaris in BeforeCheckConfiguration

* Use configuration and constants exist in  PolarisRefresherHandler

* Just consider the properties of BootstrapPropertiesInterface

* Don't throw exception in if else

* Optimize code format in BeforeCheckConfiguration

kernel/dynamic/api/src/main/java/cn/hippo4j/threadpool/dynamic/api/BootstrapPropertiesInterface.java

@@ -101,4 +101,11 @@ public interface BootstrapPropertiesInterface {
         return null;
     }
 
+    /**
+     * Get Polaris.
+     */
+    default Map<String, Object> getPolaris() {
+        return null;
+    }
+
 }

kernel/dynamic/mode/config/src/main/java/cn/hippo4j/threadpool/dynamic/mode/config/properties/BootstrapConfigProperties.java

@@ -76,6 +76,11 @@ public class BootstrapConfigProperties implements BootstrapPropertiesInterface {
      */
     private Map<String, String> etcd;
 
+    /**
+     * polaris config
+     */
+    private Map<String, Object> polaris;
+
     /**
      * Web config
      *

starters/threadpool/config/src/main/java/cn/hippo4j/config/springboot/starter/refresher/PolarisRefresherHandler.java

@@ -71,4 +71,5 @@ public class PolarisRefresherHandler extends AbstractConfigThreadPoolDynamicRefr
         return Objects.equals(POLARIS_FILE_TYPE, "yaml") ? configFileService.getConfigYamlFile(namespace, fileGroup, fileName)
                 : configFileService.getConfigPropertiesFile(namespace, fileGroup, fileName);
     }
+
 }

threadpool/core/src/main/java/cn/hippo4j/core/enable/BeforeCheckConfiguration.java

@@ -23,6 +23,7 @@ import cn.hippo4j.core.config.ConfigEmptyException;
 import cn.hippo4j.threadpool.dynamic.api.BootstrapPropertiesInterface;
 import lombok.AllArgsConstructor;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.core.env.ConfigurableEnvironment;
@@ -144,6 +145,39 @@ public class BeforeCheckConfiguration {
                         }
                     }
 
+                    Map<String, Object> polaris = properties.getPolaris();
+                    if (MapUtil.isNotEmpty(polaris)) {
+                        String namespace = polaris.get("namespace").toString();
+                        if (StringUtil.isBlank(namespace)) {
+                            throw new ConfigEmptyException(
+                                    "Web server maybe fail to start. The dynamic thread pool polaris namespace is empty.",
+                                    "Please check whether the [spring.dynamic.thread-pool.polaris.namespace] configuration is empty or an empty string.");
+                        }
+                        if (!(polaris.get("file") instanceof Map)) {
+                            throw new ConfigEmptyException(
+                                    "Web server maybe fail to start. Lack of the dynamic thread pool polaris file configuration.",
+                                    "Please check whether the [spring.dynamic.thread-pool.polaris.file.*] configuration is complete.");
+                        }
+                        Map<String, String> polarisFile = (Map<String, String>) polaris.get("file");
+                        String fileGroup = polarisFile.get("group");
+                        if (StringUtil.isBlank(fileGroup)) {
+                            throw new ConfigEmptyException(
+                                    "Web server maybe fail to start. The dynamic thread pool polaris file group is empty.",
+                                    "Please check whether the [spring.dynamic.thread-pool.polaris.file.group] configuration is empty or an empty string.");
+                        }
+                        String fileName = polarisFile.get("name");
+                        if (StringUtil.isBlank(fileName)) {
+                            throw new ConfigEmptyException(
+                                    "Web server maybe fail to start. The dynamic thread pool polaris file name is empty.",
+                                    "Please check whether the [spring.dynamic.thread-pool.polaris.file.name] configuration is empty or an empty string.");
+                        }
+                        String fileType = polarisFile.get("type");
+                        if (StringUtil.isBlank(fileType)) {
+                            throw new ConfigEmptyException(
+                                    "Web server maybe fail to start. The dynamic thread pool polaris file type is empty.",
+                                    "Please check whether the [spring.dynamic.thread-pool.polaris.file.type] configuration is empty or an empty string.");
+                        }
+                    }
                     break;
                 }
                 default: