# Custom Plugin - Unable to Access Sonar Parameters and Share Measures in MeasureComputer

**URL:** <https://community.sonarsource.com/t/custom-plugin-unable-to-access-sonar-parameters-and-share-measures-in-measurecomputer/136014>\
**Category:** Plugin Development\
**Tags:** plugin, custom\_plugin, sonarqube, java, coverage\
**Created:** [February 28, 2025, 9:34am UTC](https://community.sonarsource.com/t/custom-plugin-unable-to-access-sonar-parameters-and-share-measures-in-measurecomputer/136014 "2025-02-28T09:34:16Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![Feako](https://avatars.discourse-cdn.com/v4/letter/f/b77776/32.png) [@Feako](https://community.sonarsource.com/u/Feako)\
**Post date:** [February 28, 2025, 9:34am UTC](https://community.sonarsource.com/t/custom-plugin-unable-to-access-sonar-parameters-and-share-measures-in-measurecomputer/136014/1 "2025-02-28T09:34:16Z")

</div>

**What are you trying to accomplish?**  
I am developing a custom SonarQube plugin and trying to:

- Access SonarQube configuration parameters within `MeasureComputer`.
- Share computed measures from `MeasureComputer` with other parts of the plugin, such as `Sensor` or other `MeasureComputer` instances.

**What’s your specific coding challenge in developing your plugin?**

1. **Unable to Access Sonar Parameters in `MeasureComputer`**

- When trying to access configuration parameters from `sonar.properties` or `sonar-project.properties` within `MeasureComputer`, the values always return `null`.
- These parameters are accessible within `Sensor`, but not within `MeasureComputer`. The returned value is `null`.

1. **Unable to Pass Data Between `Sensor` and `MeasureComputer`**

- It appears that it is not possible to directly pass data from `Sensor` to `MeasureComputer` or vice versa. I have tried doing this using metrics, but it is not working.
- Measures added in `Sensor` cannot be retrieved in `MeasureComputer`, and vice versa.

Any guidance on resolving these issues would be greatly appreciated. Thank you!

---

<div class="post-metadata">

**Author:** ![ganncamp](https://dub1.discourse-cdn.com/sonarsource/user_avatar/community.sonarsource.com/ganncamp/32/1261_2.png) [@ganncamp](https://community.sonarsource.com/u/ganncamp)\
**Post date:** [March 3, 2025, 1:59pm UTC](https://community.sonarsource.com/t/custom-plugin-unable-to-access-sonar-parameters-and-share-measures-in-measurecomputer/136014/2 "2025-03-03T13:59:39Z")

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Hi,

Welcome to the community!

Could you share, in broader strokes, what you’re trying to accomplish? Why do you feel you need to access analysis parameters from a `MeasureComputer`?

&nbsp;  
Ann

---

<div class="post-metadata">

**Author:** ![Feako](https://avatars.discourse-cdn.com/v4/letter/f/b77776/32.png) [@Feako](https://community.sonarsource.com/u/Feako)\
**Post date:** [March 4, 2025, 9:24am UTC](https://community.sonarsource.com/t/custom-plugin-unable-to-access-sonar-parameters-and-share-measures-in-measurecomputer/136014/3 "2025-03-04T09:24:56Z")

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I’m developing a custom SonarQube plugin that should display total coverage data for a specified set of folders. My idea is to pass the following JSON to the Sonar plugin via a property:

```auto
{
  "ListOfFolders1": [
    "/somePath1/destinationFolder1/",
    "/somePath1/destinationFolder1/",
    ...
  ],
  ...

```

Then, I would calculate the total coverage of these folders and save the result to custom metrics, after which the data can be displayed on the plugin’s UI page. As I understand it, I can only get directory metrics from the `MeasureComputer`:

```auto
    @Override
    public void compute(MeasureComputerContext context) {
        try {
            if (context.getComponent().getType() == Component.Type.DIRECTORY) {

                var coverage = context.getMeasure(CoreMetrics.COVERAGE.getKey());
                var linesOfCode = context.getMeasure(CoreMetrics.LINES.getKey());

                if (coverage != null && linesOfCode != null) {
                    LOGGER.info(
                            "folder:{} Coverage:{}, Number of lines:{}",
                            context.getComponent().getKey(),
                            context.getMeasure(CoreMetrics.COVERAGE.getKey()).getDoubleValue(),
                            context.getMeasure(CoreMetrics.LINES.getKey()).getIntValue()
                    );
                }
            }
            ...

```

The issue is that in `MeasureComputer`, my Sonar property is always `null` (while in `Sensor`, it is correctly populated), and I can’t compare the calculated data with the list of required folders. Additionally, I can’t save the measure metrics values to a custom metric, as in the `Sensor` it’s always `null`.

---

<div class="post-metadata">

**Author:** ![ganncamp](https://dub1.discourse-cdn.com/sonarsource/user_avatar/community.sonarsource.com/ganncamp/32/1261_2.png) [@ganncamp](https://community.sonarsource.com/u/ganncamp)\
**Post date:** [March 4, 2025, 12:54pm UTC](https://community.sonarsource.com/t/custom-plugin-unable-to-access-sonar-parameters-and-share-measures-in-measurecomputer/136014/4 "2025-03-04T12:54:42Z")

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Hi,

I believe the underlying assumption is that a `MeasureComputer` will only need the granular measures collected during CI-side analysis, since its purpose is to aggregate that data into higher-level values.

To make this work, I suspect you’ll need to start CI-side, where your property should be available.

Tangentially, “total coverage” should probably include condition coverage, which I don’t see reflected in your code snippet.

One last point is that your life will probably be easier if you just pass a comma-delimited listof directories, rather than a JSON structure.

&nbsp;  
HTH,  
Ann

---

<div class="post-metadata">

**Author:** ![Feako](https://avatars.discourse-cdn.com/v4/letter/f/b77776/32.png) [@Feako](https://community.sonarsource.com/u/Feako)\
**Post date:** [March 4, 2025, 1:50pm UTC](https://community.sonarsource.com/t/custom-plugin-unable-to-access-sonar-parameters-and-share-measures-in-measurecomputer/136014/5 "2025-03-04T13:50:22Z")

</div>

Thank you for the answer, Ann!

If I understand your answer correctly, the CI side is already configured properly, and the parameter value is accessible in the `ProjectSensor` subclass in the plugin but not in the `MeasureComputer`.

Let me explain more simply:

Let’s say I have the following Sonar property configured on the CI side:

```auto
sonar.pathForTheFolderWhichShouldBeDisplayedWithCoverageInPluginUIPage=/someFolderPath  

```

I can retrieve all project directory measures in the `MeasureComputer`, but I can’t identify the exact folder I need because the property value is always `null`:

```auto
public class MyMeasureComputer implements MeasureComputer {  

    private final Configuration configuration;  
    private static final String MY_FOLDER_PATH = "sonar.pathForTheFolderWhichShouldBeDisplayedWithCoverageInPluginUIPage";  

    public MyMeasureComputer(Configuration configuration) { 
        this.configuration = configuration;  
    }  

    @Override  
    public void compute(MeasureComputerContext context) {  
        String path = configuration.get(MY_FOLDER_PATH).orElse(null); // Always `null`  
    }  
}  

```

My question is: are there any suggestions on where in the plugin I can retrieve both values: my provided property and the folders measures?

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<div class="post-metadata">

**Author:** ![ganncamp](https://dub1.discourse-cdn.com/sonarsource/user_avatar/community.sonarsource.com/ganncamp/32/1261_2.png) [@ganncamp](https://community.sonarsource.com/u/ganncamp)\
**Post date:** [March 4, 2025, 2:22pm UTC](https://community.sonarsource.com/t/custom-plugin-unable-to-access-sonar-parameters-and-share-measures-in-measurecomputer/136014/6 "2025-03-04T14:22:42Z")

</div>

Hi,

What I’m suggesting is that you begin on the CI side by collecting folder-level `mySpecialCoverageMetric` values. Then its easy to aggregate them server-side.

&nbsp;  
HTH,  
Ann