Improve log mediator to support string templating #2230
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SanojPunchihewa
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modules/core/src/main/java/org/apache/synapse/util/InlineExpressionUtil.java
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| // Extract the expression inside ${...} | ||
| String placeholder = matcher.group(1); | ||
| SynapseExpression expression = new SynapseExpression(placeholder); | ||
| String replacement = expression.stringValueOf(synCtx); |
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if the stringValueOf fails we get the value "unknown" should we print a warn log outside the while loop saying processed template might have an incorrect result since evaluation of some expressions failed.
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We cannot distinguish the unknown at the mediator level. We may need to print the warn log at the evaluation.
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| @@ -288,6 +302,16 @@ public void setCategory(int category) { | |||
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| public String getMessageTemplate() { | |||
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Why an additional new line?
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It's added by the wso2_code_style for idea.
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| public void setMessageTemplate(String messageTemplate) { | ||
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Purpose
In the current log mediator, the user needs to add a property and use XPATH concatenations to define a log message. With this improvement, the user can define a string template for the log message. In addition to the log message, the user can add additional properties to be logged.
To maintain backward compatibility when the user has set a
level, the message will be printed in addition to the content printed according tolevel