The powerful and easy-to-use object log system, supports writing and querying of object attribute changes.
ObjectLogger is powerful and easy-to-use object log system, which supports writing and querying of object attribute changes.
It can be used in many scenarios, such as user operation log record, object attribute change record and so on.
The system has the following characteristics:
- It supports logging and query, and developers only need to redevelop the web page before using.
- It is not coupled with business systems.Pluggable use, without affecting the main business process.
- It can be used by multiple business systems at the same time without affecting each other.
- It can be started directly using the jar package; the business system is supported by the official Maven plug-in.
- It can automatically parse the attribute changes of objects and support the comparison of rich text.
- It supports extension of more object attribute types.
Use /server/database/init_data_table.sql to init two data tables.
Download the new target jar file from /server/target/ObjectLogger-*.jar.
Start the jar with the following statement:
java -jar ObjectLogger-*.jar --spring.datasource.driver-class-name={db_driver} --spring.datasource.url=jdbc:{db}://{db_address}/{db_name} --spring.datasource.username={db_username} --spring.datasource.password={db_password}
The above configuration items are described below:
db_driver:Database driver.com.mysql.jdbc.Driverfor MySQL database;com.microsoft.sqlserver.jdbc.SQLServerDriverfor SqlServer database.db:DataBase type.mysqlfor MySQL database ;sqlserverfor SqlServer database.db_address:Database address. If the database is native,127.0.0.1.db_name:Database name..db_username:User name used to log in to the database.db_password:Password used to log in to the database.
After starting the jar package, the default welcome page is:
http://127.0.0.1:8080/ObjectLogger/
Visit the above address to see the following welcome interface:
The ObjectLogger system has been built.
This section explains how to configure the business system to record object changes in the business system into ObjectLogger.
Add dependency package in POM file：
<dependency>
<groupId>com.github.yeecode.objectLogger</groupId>
<artifactId>ObjectLoggerClient</artifactId>
<version>{last_version}</version>
</dependency>
Add @ComponentScan and add ``com.github.yeecode.objectLoggerClientinbasePackages`：
@SpringBootApplication
@ComponentScan(basePackages={"{your_beans_root}","com.github.yeecode.objectLogger"})
public class MyBootAppApplication {
public static void main(String[] args) {
// Eliminate other code
}
}
Add the following code to applicationContext.xml file:
<context:component-scan base-package="com.github.yeecode.objectLoggerClient">
</context:component-scan>
Add the following code to application.properties:
yeecode.objectLogger.serverAddress=http://{ObjectLogger_address}
yeecode.objectLogger.businessAppName={your_app_name}
yeecode.objectLogger.autoLogAttributes=true
ObjectLogger_address: The deployment address of the ObjectLogger in the previous step, such as:127.0.0.1:8080your_app_name:The application name of the current business system. In order to differentiate log sources and support multiple business systems at the same timeyeecode.objectLogger.autoLogAttributes:Whether to automatically record all attributes of an object
At this point, the configuration of the business system is completed.
The logs recorded in the system can be queried by `ObjectLogger/log/query', and the logs can be filtered by passing in parameters.
The business system introduces LogClient in any class that requires logging:
@Autowired
private LogClient logClient;
Just put the zero, one or more attributes of the object into List<BaseAttributeModel> and call logAttributes method. For example, a business application calls:
logClient.logAttributes(
"CleanRoomTask",
5,
"Tom",
"add",
"Add New Task",
"Create a cleanRoomTask",
"taskName is :Demo Task",
null);
Query form ObjectLogger：
http://{your_ObjectLogger_address}/ObjectLogger/log/query?appName=ObjectLoggerDemo&objectName=CleanRoomTask&objectId=5
Results：
{
"respMsg": "SUCCESS",
"respData": [
{
"id": 1,
"appName": "ObjectLoggerDemo",
"objectName": "CleanRoomTask",
"objectId": 5,
"operator": "Jone",
"operationName": "start",
"operationAlias": "Start a Task",
"extraWords": "Begin to clean room...",
"comment": "Come on and start cleaning up.",
"operationTime": "2019-07-04T06:53:40.000+0000",
"attributeModelList": [
{
"attributeType": "NORMAL",
"attributeName": "status",
"attributeAlias": "Status",
"oldValue": "TODO",
"newValue": "DOING",
"diffValue": null,
"id": 1,
"operationId": 1
}
]
}
],
"respCode": "1000"
}
This function can automatically complete the comparison between old and new objects, and insert multiple attribute changes into the log system together. When used, ensure that the old and new objects belong to the same class.
For example:
CleanRoomTask oldTask = new CleanRoomTask();
oldTask.setId(5);
oldTask.setTaskName("Demo Task");
oldTask.setStatus("TODO");
oldTask.setDescription("Do something...");
CleanRoomTask newTask = new CleanRoomTask();
newTask.setId(5);
newTask.setTaskName("Demo Task");
newTask.setStatus("DOING");
newTask.setDescription("The main job is to clean the floor.");
newTask.setAddress("Sunny Street");
newTask.setRoomNumber(702);
logClient.logObject(
cleanRoomTask.getId(),
"Tom",
"update",
"Update a Task",
null,
null,
oldTask,
newTask);
Query form ObjectLogger：
http://{your_ObjectLogger_address}/ObjectLogger/log/query?appName=ObjectLoggerDemo&objectName=CleanRoomTask&objectId=5
Results：
{
"respMsg": "SUCCESS",
"respData": [
{
"id": 4,
"appName": "ObjectLoggerDemo",
"objectName": "CleanRoomTask",
"objectId": 5,
"operator": "Tom",
"operationName": "update",
"operationAlias": "Update a Task",
"extraWords": null,
"comment": null,
"operationTime": "2019-07-04T07:22:59.000+0000",
"attributeModelList": [
{
"attributeType": "NORMAL",
"attributeName": "roomNumber",
"attributeAlias": "roomNumber",
"oldValue": "",
"newValue": "702",
"diffValue": null,
"id": 5,
"operationId": 4
},
{
"attributeType": "NORMAL",
"attributeName": "address",
"attributeAlias": "address",
"oldValue": "",
"newValue": "Sunny Street",
"diffValue": null,
"id": 6,
"operationId": 4
},
{
"attributeType": "NORMAL",
"attributeName": "status",
"attributeAlias": "Status",
"oldValue": "TODO",
"newValue": "DOING",
"diffValue": null,
"id": 7,
"operationId": 4
},
{
"attributeType": "TEXT",
"attributeName": "description",
"attributeAlias": "Description",
"oldValue": "Do something...",
"newValue": "The main job is to clean the floor.",
"diffValue": "Line 1<br/> -： <del> Do something... </del> <br/> +： <u> The main job is to clean the floor. </u> <br/>",
"id": 8,
"operationId": 4
}
]
}
],
"respCode": "1000"
}
Some object attributes do not need to be logged, such as updateTime, hashCode, etc. ObjectLogger supports filtering attributes of objects, tracking only attributes that we are interested in.
And for each attribute, we can change the way it is recorded in the ObjectLogger system, such as changing the name.
To enable this function, first change the yeecode.objectLogger.autoLogAttributes in the configuration to `false'.
yeecode.objectLogger.autoLogAttributes=true
Then, the @LogTag annotation should be added to the attributes that need to be logged for change. Attributes without the annotation will be automatically skipped when logging.
For example, if the annotation configuration is as follows, id field changes will be ignored.
private Integer id;
@LogTag
private String taskName;
@LogTag(alias = "UserId", extendedType = "userIdType")
private int userId;
@LogTag(alias = "Status")
private String status;
@LogTag(alias = "Description", builtinType = BuiltinTypeHandler.TEXT)
private String description;
- alias:The attribute alias to display.
- builtinType：Built-in type of ObjectLogger, which form the BuiltinTypeHandler enum. The default value is
BuiltinTypeHandler.NORMAL.- BuiltinTypeHandler.NORMAL：Record the new and old values.
- BuiltinTypeHandler.TEXT: Line-by-line comparison of rich text differences.
- extendedType：Extend attribute types. Users can extend the processing of certain fields.
In many cases, users want to be able to decide how to handle certain object attributes independently. For example, users may want to convert the userId attribute of the Task object into a name and store it in the log system, thus completely decoupling the log system from `userId'.
ObjectLogger fully supports this scenario, allowing users to decide how to log certain attributes independently. To achieve this function, first assign a string value to the extendedType attribute of @LogTag that needs to be extended. For example:
@LogTag(alias = "UserId", extendedType = "userIdType")
private int userId;
And new a Bean implements BaseExtendedTypeHandler in business system:
@Service
public class ExtendedTypeHandler implements BaseExtendedTypeHandler {
@Override
public BaseAttributeModel handleAttributeChange(String extendedType, String attributeName, String attributeAlias, Object oldValue, Object newValue) {
// TODO
}
}
When ObjectLogger processes this property, it passes information about the property into the `handleAttributeChange'method of the extended bean. The four parameters introduced are explained as follows:
extendedType：Extended Type.In this example,userIdType.attributeName：Attribute Name. In this example,userId.attributeAlias：Attribute alias, from@LogTag. In this example,UserId.oldValue：Old value of the attribute.newValue：New value of the attribute.
For example, we can deal with the userIdType attribute in the following way:
@Service
public class ExtendedTypeHandler implements BaseExtendedTypeHandler {
@Override
public BaseAttributeModel handleAttributeChange(String extendedType, String attributeName, String attributeAlias, Object oldValue, Object newValue) {
BaseAttributeModel baseAttributeModel = new BaseAttributeModel();
if (extendedType.equals("userIdType")) {
baseAttributeModel.setOldValue("USER_" + oldValue);
baseAttributeModel.setNewValue("USER_" + newValue);
baseAttributeModel.setDiffValue(oldValue + "->" + newValue);
}
return baseAttributeModel;
}
}
- 1.0.0：Initialize the system
- 2.0.0：Optimized system structure
- 2.0.1：Made the system support multi-threading
- 2.2.0：Added automatic recording function of global object attribute change
- 2.3.0：Added automatic recording for inherited attributes
- 3.0.0：Optimizing System Naming
- TODO：Added object deep copy function