Determining a Method to Set Log Levels in Lean Rules Engine

Use

You use this procedure to identify which method needs to be implemented to log the execution details of a rule by the Lean Rules Engine.

Note

The log information can include details such as the step-by-step execution of a ruleset, the state of the business objects, and the lifecycle of a rule. This information helps you in monitoring and analyzing the execution of rules.

There are multiple log levels provided by BRM as mentioned below:

Log Level	Description
No logging	Doesn't log any information.
Basic (Default)	Logs basic information such as the project name, ruleset name, rule fired and the rule flow. This is the default log level.
Medium	Logs details of the basic log level along with the details such as definition value changed, business objects details, decision table evaluation rule, rulescript and gateway evaluation.
Advanced	Logs details of the medium log level along with the details such as condition evaluation details, action execution details, rulescript and gateway execution.

Procedure

Identify one of the following methods for setting log levels in Lean Rules Engine.

Setting a log level using RulesetContext method

You can set the required log level using the setBusinessLogLevel() method available in Ruleset Context, which contains the required information for ruleset execution. In this case, the rules engine takes the log level value from the corresponding method, and generates the log details according to the log value set in the method. By default, the BASIC _BUSINESS_LOGGING log level is set.
```
RulesetContext rulesetcontext= engine.createRulesetContext(<ProjectName>,<RulesetName>);
rulescontext.setBusinessLogLevel(BusinessLogLevel.BASIC_BUSINESS_LOGGING);
               
```
The various log levels that you can set for RulesetContext method are mentioned below:
- BusinessLogLevel.NO_BUSINESS_LOGGING
- BusinessLogLevel.BASIC_BUSINESS_LOGGING
- BusinessLogLevel.MEDIUM_BUSINESS_LOGGING
- BusinessLogLevel.ADVANCED_BUSINESS_LOGGING
Note

The log level set using RulesetContext method takes higher priority over the log level set using ReteEngine property.

Setting a log level using ReteEngine property

You can set the required log level using the businessloglevel property available in ReteEngine. By default, two is set as the default value for the log level.

Properties configuration = new Properities();
Configuration.setProperty("businessloglevel","2");

The various log levels and the corresponding values that you can set for the businessloglevel property are mentioned below:

Value	Business Log levels
1	BusinessLogLevel.NO_BUSINESS_LOGGING
2	BusinessLogLevel.BASIC_BUSINESS_LOGGING
3	BusinessLogLevel.MEDIUM_BUSINESS_LOGGING
4	BusinessLogLevel.ADVANCED_BUSINESS_LOGGING

More Information

Configuring Business Logger for Lean Rules Engine