Add entity classes for config management in Backend

sermant-backend/src/main/java/io/sermant/backend/entity/config/ConfigCenterType.java

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+/*
+ * Copyright (C) 2024-2024 Sermant Authors. 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 io.sermant.backend.entity.config;
+
+/**
+ * Enum for DynamicConfigType
+ *
+ * @author zhp
+ * @since 2024-05-22
+ */
+public enum ConfigCenterType {
+    /**
+     * zookeeper configuration center
+     */
+    ZOOKEEPER,
+
+    /**
+     * servicecomb-kie configuration center
+     */
+    KIE,
+
+    /**
+     * Nacos configuration center
+     */
+    NACOS,
+
+    /**
+     * no configuration center implementation
+     */
+    NOP;
+}

sermant-backend/src/main/java/io/sermant/backend/entity/config/ConfigInfo.java

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+/*
+ * Copyright (C) 2024-2024 Sermant Authors. 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 io.sermant.backend.entity.config;
+
+import lombok.Getter;
+import lombok.Setter;
+
+/**
+ * configuration information
+ *
+ * @author zhp
+ * @since 2024-05-16
+ */
+@Getter
+@Setter
+public class ConfigInfo {
+    /**
+     * plugin type, the plugin to which the configuration item belongs
+     */
+    private String pluginType;
+
+    /**
+     * The namespace to which the configuration item belongs, only used by the nacos configuration center
+     */
+    private String namespace;
+
+    /**
+     * Service name, when not empty, the configuration item only takes effect on microservices
+     * with the same service name
+     */
+    private String serviceName;
+
+    /**
+     * Environment name, when not empty, the configuration item only takes effect for microservices in that environment
+     */
+    private String environment;
+
+    /**
+     * Application name, when not empty, the current configuration item only applies to microservices
+     * under that application
+     */
+    private String appName;
+
+    /**
+     * Zone name, when not empty, the configuration item only applies to microservices in that zone
+     */
+    private String zone;
+
+    /**
+     * Grouping name for configuration items
+     */
+    private String group;
+
+    /**
+     * The key of the configuration item
+     */
+    private String key;
+
+    /**
+     * Configuration Content
+     */
+    private String content;
+}

sermant-backend/src/main/java/io/sermant/backend/entity/config/ConfigServerInfo.java

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+/*
+ * Copyright (C) 2024-2024 Sermant Authors. 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 io.sermant.backend.entity.config;
+
+import lombok.Getter;
+import lombok.Setter;
+
+/**
+ * Configuration Center Information
+ *
+ * @author zhp
+ * @since 2024-05-16
+ */
+@Getter
+@Setter
+public class ConfigServerInfo {
+    /**
+     * Configuration Center Address
+     */
+    private String serverAddress;
+
+    /**
+     * userName, authentication for Configuration Center
+     */
+    private String userName;
+
+    /**
+     * password, authentication for Configuration Center
+     */
+    private String password;
+
+    /**
+     * secret key, used for encryption and decryption of passwords
+     */
+    private String secretKey;
+
+    /**
+     * Type of Configuration Center
+     */
+    private String dynamicConfigType;
+}

sermant-backend/src/main/java/io/sermant/backend/entity/config/Result.java

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+/*
+ * Copyright (C) 2024-2024 Sermant Authors. 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 io.sermant.backend.entity.config;
+
+import lombok.Getter;
+import lombok.Setter;
+
+/**
+ * Result information
+ *
+ * @param <R> Result data type
+ * @author zhp
+ * @since 2024-05-16
+ */
+@Getter
+@Setter
+public class Result<R> {
+    /**
+     * Result Code, the corresponding enumeration is ResultCodeType
+     */
+    private String code;
+
+    /**
+     * Result message
+     */
+    private String message;
+
+    /**
+     * Result data
+     */
+    private R data;
+
+    /**
+     * Constructor
+     *
+     * @param code result code
+     * @param message result message
+     */
+    public Result(String code, String message) {
+        this.code = code;
+        this.message = message;
+    }
+
+    /**
+     * Constructor
+     *
+     * @param code result code
+     * @param message result message
+     * @param data result data
+     */
+    public Result(String code, String message, R data) {
+        this.code = code;
+        this.message = message;
+        this.data = data;
+    }
+
+    /**
+     * Is the result successful
+     *
+     * @return true：success false: fail
+     */
+    public boolean isSuccess() {
+        return ResultCodeType.SUCCESS.getCode().equals(this.code);
+    }
+}

sermant-backend/src/main/java/io/sermant/backend/entity/config/ResultCodeType.java

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+/*
+ * Copyright (C) 2024-2024 Sermant Authors. 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 io.sermant.backend.entity.config;
+
+import lombok.Getter;
+
+/**
+ * Result encoding type
+ *
+ * @author zhp
+ * @since 2024-05-16
+ */
+@Getter
+public enum ResultCodeType {
+    /**
+     * Interface call successful
+     */
+    SUCCESS("00", "Success."),
+
+    /**
+     * Unable to establish connection with Configuration Center
+     */
+    CONNECT_FAIL("01", "Unable to establish connection with Configuration Center."),
+
+    /**
+     * Configuration query failed
+     */
+    QUERY_FAIL("02", "Configuration query failed."),
+
+    /**
+     * configuration item already exists
+     */
+    EXISTS("03", "configuration item already exists."),
+
+    /**
+     * Failed to add configuration
+     */
+    ADD_FAIL("04", "Failed to add configuration."),
+
+    /**
+     * Failed to modify configuration
+     */
+    MODIFY_FAIL("05", "Failed to modify configuration."),
+
+    /**
+     * Failed to delete configuration
+     */
+    DELETE_FAIL("06", "Failed to delete configuration."),
+
+    /**
+     * Configuration does not exist
+     */
+    NOT_EXISTS("07", "Configuration does not exist."),
+
+    /**
+     * Missing parameter information
+     */
+    MISS_PARAM("08", "Missing parameter information."),
+
+    /**
+     * Interface call failed
+     */
+    FAIL("09", "Failure.");
+
+    private final String code;
+
+    private final String message;
+
+    ResultCodeType(String code, String message) {
+        this.code = code;
+        this.message = message;
+    }
+}