If SonarQube provides developers with information that are not relevant, they will likely push back the tool. That's why configuring Exclusions / Inclusions for each project to remove noise (such as generated code or issues that are not relevant for certain rules on certain types of object) is a very important step.
Defining Source Code Scope
Make sure to exclude genearated code, source code from libraries, etc. Four different ways are at your disposal to select source code that will be relevant to the development team. You can combine them all together to tune your analysis scope.
sonar.sources property to limit the scope of the analysis to certain directories.
Some project modules should not be analyzed and consolidated with global project measures. For instance: sample modules, integration tests modules, etc. To exclude those modules, at project level, go to Configuration > Settings > Exclusions > Files and set the Module Exclusions property. Format is a comma-separated list of modules:
module1_to_exclude,module2_to_exclude. If a module's artifactId differs from its module name (the directory name), it is the artifactId that should be use instead of the module name
You can also work the other way around with inclusions. Set the Module Inclusions property. Be careful: the root project must be added to the list.
Each language plugin offers a way to restrict the scope to files matching a set of extensions. Go to Settings > General Settings > LanguagePlugin and set the File suffixes property:
It is possible to exclude some specific files from being analyzed. At project level, go to Configuration > Settings > Exclusions > Files and set the:
sonar.exclusionsproperty to exclude source code files
sonar.tests.exclusionsproperty to exclude unit test files
Global exclusions that will apply to all projects can also be set. Go to Settings > General Settings > Exclusions > Files and set the
Since version 3.5, you can also work the other way around by setting inclusions. Go to Settings > General Settings > Exclusions > Files and set the
Switching Off Issues
You have different ways to prevent certain types of issue to be logged on certain files.
File Exclusion Patterns
Set the File Exclusion Patterns property to switch off all issues on files that contain a block of code matching a given regular expression.
Example: Switch off all issues on files containing
Block Exclusion Patterns
Set the Block Exclusion Patterns property to switch off all issues on specific blocks of code.
Note: If the first regular expression is found but not the second one, the end of the file is considered as the end of the block.
Example: Switch off all issues included in
BEGIN-GENERATED / END-GENERATED blocks.
Multi-criteria Exclusion Patterns
Set the Multi-criteria Exclusion Patterns property to switch off all issues on specific components, coding rules and line ranges.
Examples: Switch off:
- all issues =>
- all issues on the Java file
- all issues in the Java package
- all issues of a specific rule =>
- all issues of a specific rule on a specific file =>
- all issues on specific lines: 10, 25 and 90 =>
- all issues on a line range =>
- all issues on several line ranges =>
<TODO> Update the screenshot
Multi-criteria Inclusion Patterns
It is the opposite of the Multi-criteria Exclusion Patterns property.
Examples: Raise issues against:
- files in the Java package
- the DesignForExtensionCheck rule on Java file
<TODO> Update the screenshot
Excluding from Duplications
You can prevent some files from being checked against duplications.
To do so, go to Settings > General Settings > Exclusions > Duplications and set the Duplication Exclusions property. See the Patterns section for more details.
Excluding from Code Coverage
You can prevent some files from being taken into account for code coverage by unit tests and integration tests.
To do so, go to Settings > General Settings > Exclusions > Code Coverage and set the Coverage Exclusions property. See the Patterns section for more details.
Path can be defined either as relative or absolute.
The following wilcards can be used:
|*||zero or more characters|
|**||zero or more directories|
|?||one single character|
Relative paths are based on the fully qualified name of the component (that is displayed in the red frame below):
Note that for Java (only), replace "." package separator by "/" and add ".java" extension.
To define absolute path, start the pattern with "file:"