Open cgossett opened 1 week ago
⏱️ Estimated effort to review [1-5] | 3 |
🧪 Relevant tests | Yes |
🔒 Security concerns | No |
⚡ Key issues to review |
Possible Bug: The use of NumberFormat.getInstance().parse(res.toString()) in getAttribute method might not be the most efficient or error-free way to convert numbers. Consider using more direct methods like Integer.valueOf() or Double.valueOf() depending on the expected type. |
Exception Handling: The broad catch of Exception in the getAttributes method might mask other unexpected runtime issues. It's generally better to catch more specific exceptions if possible. |
Category | Suggestion | Score |
Best practice |
Catch specific exceptions instead of a generic
___
**Instead of catching a generic | 8 |
Performance |
Return
___
**Use | 7 |
Maintainability |
Extract repeated parsing and assertion logic into a helper method___ **Extract the repeated parsing and assertion logic into a helper method to reduce codeduplication and improve readability.** [java/test/org/openqa/selenium/grid/router/JmxTest.java [148-152]](https://github.com/SeleniumHQ/selenium/pull/14153/files#diff-89598c0635d3d9b749c357e36e67a49f5f6d979e90d8231b058659bcd453d3dfR148-R152) ```diff -assertThat(Integer.parseInt(currentSessions.toString())).isZero(); -assertThat(Integer.parseInt(maxSessions.toString())).isEqualTo(1); +assertNumberAttribute(currentSessions, 0); +assertNumberAttribute(maxSessions, 1); +private void assertNumberAttribute(Object attribute, int expectedValue) { + assertThat(attribute).isNotNull(); + assertThat(Integer.parseInt(attribute.toString())).isEqualTo(expectedValue); +} + ``` - [ ] **Apply this suggestion** Suggestion importance[1-10]: 7Why: Extracting repeated logic into a helper method reduces code duplication and improves readability, which enhances maintainability. | 7 |
Possible bug |
Add null checks before parsing attributes to avoid potential
___
**Add assertions to check for null values before parsing the attributes to avoid potential | 6 |
User description
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Description
This change implements the
getAttributes()
method on the JMX MBean object(s), returning anAttributeList
with the current attributes of the MBean.It also updates the return type of the MBean attributes which are Number based to their appropriate Number data type instead of String objects.
Motivation and Context
Motivation for this change is driven by trying to export the custom JMX metrics out of the Grid and into Prometheus, with the end goal being that those metrics once in Prometheus in an OpenShift environment can drive autoscaling of Node pods for a Grid instance. The JMX exporter in question is the Prometheus JMX Exporter, which leverages the
getAttributes()
method of any DynamicMBeans in order to determine if any attributes should be exported.If implemented, this addition will allow those running Selenium Grid to more easily export the custom Grid metrics into a Prometheus environment.
Types of changes
Checklist
PR Type
Enhancement, Tests
Description
getAttributes()
method in theMBean
class to return anAttributeList
with current attributes.getAttribute
method to correctly handle and parseNumber
types.getAttribute
method to includeParseException
.getAttributes
method.Number
types instead ofString
.getAttributeList
in tests to streamline attribute retrieval.Changes walkthrough 📝
MBean.java
Implement `getAttributes` method and update `getAttribute` handling
java/src/org/openqa/selenium/grid/jmx/MBean.java
getAttributes()
method to return anAttributeList
withcurrent MBean attributes.
getAttribute
method to handleNumber
types and parse themcorrectly.
ParseException
.JmxTest.java
Add unit tests for `getAttributes` and update attribute type checks
java/test/org/openqa/selenium/grid/router/JmxTest.java
getAttributes
method.Number
types instead of
String
.getAttributeList
to streamline attributeretrieval in tests.