[grid] Add lock while finding a node in GridModel setSession() method. Fix a log typo.

[pujagani]

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Description

Adding a lock while finding a node in GridModel.

Motivation and Context

All methods using findNode() in GridModel grab a lock before calling it, except setSession(). LocalDistributor returns a Supplier on reserving a slot which calls setSession()

selenium/java/server/src/org/openqa/selenium/grid/distributor/local/LocalDistributor.java

Line 383 in 5543c58

model.setSession(slotId, null);

.
Since 'findNode()' loops over a HashSet(), in a multi-threaded environment this might cause errors. The changes add a lock in setSession().

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• I have read the contributing document.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

0.0% Coverage
0.0% Duplication

[diemol]

Thank you, @pujagani!