Understanding NoSuchRemediationExceptionException in AWS Config
Introduction
In the realm of Amazon Web Services (AWS), AWS Config is a powerful service that helps you assess, audit, and evaluate the configurations of your AWS resources. It enables you to gain insights into your resource inventory, track changes, and maintain compliance with desired configurations. While working with AWS Config, you may come across the NoSuchRemediationExceptionException, an exception that can occur under certain circumstances. In this article, we will dive deep into the details of this exception and understand how to handle it effectively.
What is NoSuchRemediationExceptionException?
In the world of AWS Config, an exception is thrown when the requested remediation exception does not exist, resulting in a NoSuchRemediationExceptionException. It typically occurs when trying to perform operations on a non-existent or deleted configuration remediation exception.
When using AWS Config, you may specify exceptions to remediation actions. These exceptions exclude specific resources from being evaluated during the remediation process. If a remediation exception is deleted or does not exist, and you attempt to perform actions on it, such as updating or deleting it again, AWS Config will raise a NoSuchRemediationExceptionException.
Scenarios that Trigger NoSuchRemediationExceptionException
Let’s explore a few scenarios that can trigger the NoSuchRemediationExceptionException.
Scenario 1: Performing Operations on a Non-Existent Exception
Consider a situation where you have defined a configuration remediation exception but accidentally deleted it. Now, if you try to perform any operation on that exception, AWS Config will raise a NoSuchRemediationExceptionException. For example, attempting to delete a non-existent remediation exception will result in this exception.
1
2
3
4
5
6
7
8
9
10
public void deleteRemediationException(String exceptionId) {
try {
DeleteRemediationExceptionRequest request = new DeleteRemediationExceptionRequest()
.withConfigRuleName("example-rule")
.withResourceKeys(new ResourceKey().withResourceId("example-resource"));
DeleteRemediationExceptionResult result = configClient.deleteRemediationException(request);
} catch (NoSuchRemediationExceptionException exception) {
System.out.println("The specified remediation exception does not exist.");
}
}
Scenario 2: Updating a Deleted Exception
In this case, you have deleted a configuration remediation exception and then attempted to update it. As the exception no longer exists, AWS Config will throw a NoSuchRemediationExceptionException.
1
2
3
4
5
6
7
8
9
10
11
12
13
public void updateRemediationException(String exceptionId, String newDescription) {
try {
UpdateRemediationExceptionRequest request = new UpdateRemediationExceptionRequest()
.withConfigRuleName("example-rule")
.withResourceKeys(new ResourceKey().withResourceId("example-resource"))
.withExceptionId(exceptionId)
.withExpirationTime(new Date())
.withExpirationTime(newDescription);
UpdateRemediationExceptionResult result = configClient.updateRemediationException(request);
} catch (NoSuchRemediationExceptionException exception) {
System.out.println("The specified remediation exception does not exist.");
}
}
Handling NoSuchRemediationExceptionException
When working with the NoSuchRemediationExceptionException, it is crucial to handle it effectively. Below are a few best practices for handling this exception:
Error Handling: You can wrap the operation triggering the exception within a try-catch block and handle the exception gracefully. Provide appropriate error messages or perform alternative actions, such as creating a new remediation exception instead of updating a deleted one.
Validation: Before performing any operation on a remediation exception, it is recommended to validate its existence. You can check if the exception status is active and that it exists in the current context. By performing this validation, you can avoid triggering a
NoSuchRemediationExceptionException.
1
2
3
4
5
6
7
8
9
10
11
public boolean isRemediationExceptionExists(String exceptionId) {
DescribeRemediationExceptionsRequest request = new DescribeRemediationExceptionsRequest()
.withConfigRuleName("example-rule")
.withLimit(1)
.withRemediationExceptionIds(exceptionId);
DescribeRemediationExceptionsResult result = configClient.describeRemediationExceptions(request);
if (result.getRemediationExceptions().size() > 0) {
return true; // The exception exists
}
return false; // The exception does not exist
}
Conclusion
In this detailed article, we explored the NoSuchRemediationExceptionException specific to AWS Config. We understood the scenarios that trigger this exception, such as performing operations on non-existent or deleted exceptions. We also discussed best practices for handling this exception effectively, including proper error handling and validation of exception existence. By following these best practices, you can avoid potential issues when working with AWS Config.
To learn more about AWS Config and related concepts, consider visiting the following resources:
Now that you have a solid understanding of the NoSuchRemediationExceptionException, you are well-equipped to tackle any challenges that may arise while working with AWS Config. Happy exploring!