[grid] Improving platform matching

This will allow users to match requests
that specify a platform family (like
WINDOWS) and the Node has WIN10.

Fixes partially #9318

Author: diemol

java/server/src/org/openqa/selenium/grid/data/DefaultSlotMatcher.java

@@ -49,6 +49,8 @@ public boolean matches(Capabilities stereotype, Capabilities capabilities) {
     Boolean initialMatch = stereotype.getCapabilityNames().stream()
       // Matching of extension capabilities is implementation independent. Skip them
       .filter(name -> !name.contains(":"))
+      // Platform matching is special, we do it below
+      .filter(name -> !"platform".equalsIgnoreCase(name) && !"platformName".equalsIgnoreCase(name))
       .map(name -> {
         Object value = capabilities.getCapability(name);
         boolean matches;
@@ -75,7 +77,9 @@ public boolean matches(Capabilities stereotype, Capabilities capabilities) {
       Objects.equals(stereotype.getBrowserVersion(), capabilities.getBrowserVersion());
     boolean platformNameMatch =
       capabilities.getPlatformName() == null ||
-      Objects.equals(stereotype.getPlatformName(), capabilities.getPlatformName());
+      Objects.equals(stereotype.getPlatformName(), capabilities.getPlatformName()) ||
+      (stereotype.getPlatformName() != null &&
+       stereotype.getPlatformName().is(capabilities.getPlatformName()));
     return browserNameMatch && browserVersionMatch && platformNameMatch;
   }
 }

java/server/src/org/openqa/selenium/grid/node/local/LocalNode.java

@@ -17,17 +17,6 @@
 
 package org.openqa.selenium.grid.node.local;
 
-import static com.google.common.collect.ImmutableSet.toImmutableSet;
-import static org.openqa.selenium.grid.data.Availability.DRAINING;
-import static org.openqa.selenium.grid.data.Availability.UP;
-import static org.openqa.selenium.grid.node.CapabilityResponseEncoder.getEncoder;
-import static org.openqa.selenium.remote.HttpSessionId.getSessionId;
-import static org.openqa.selenium.remote.RemoteTags.CAPABILITIES;
-import static org.openqa.selenium.remote.RemoteTags.SESSION_ID;
-import static org.openqa.selenium.remote.http.Contents.asJson;
-import static org.openqa.selenium.remote.http.Contents.string;
-import static org.openqa.selenium.remote.http.HttpMethod.DELETE;
-
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Ticker;
 import com.google.common.cache.Cache;
@@ -50,9 +39,9 @@
 import org.openqa.selenium.grid.data.NodeAddedEvent;
 import org.openqa.selenium.grid.data.NodeDrainComplete;
 import org.openqa.selenium.grid.data.NodeDrainStarted;
+import org.openqa.selenium.grid.data.NodeHeartBeatEvent;
 import org.openqa.selenium.grid.data.NodeId;
 import org.openqa.selenium.grid.data.NodeStatus;
-import org.openqa.selenium.grid.data.NodeHeartBeatEvent;
 import org.openqa.selenium.grid.data.Session;
 import org.openqa.selenium.grid.data.SessionClosedEvent;
 import org.openqa.selenium.grid.data.Slot;
@@ -101,6 +90,17 @@
 import java.util.logging.Logger;
 import java.util.stream.Collectors;
 
+import static com.google.common.collect.ImmutableSet.toImmutableSet;
+import static org.openqa.selenium.grid.data.Availability.DRAINING;
+import static org.openqa.selenium.grid.data.Availability.UP;
+import static org.openqa.selenium.grid.node.CapabilityResponseEncoder.getEncoder;
+import static org.openqa.selenium.remote.HttpSessionId.getSessionId;
+import static org.openqa.selenium.remote.RemoteTags.CAPABILITIES;
+import static org.openqa.selenium.remote.RemoteTags.SESSION_ID;
+import static org.openqa.selenium.remote.http.Contents.asJson;
+import static org.openqa.selenium.remote.http.Contents.string;
+import static org.openqa.selenium.remote.http.HttpMethod.DELETE;
+
 @ManagedService(objectName = "org.seleniumhq.grid:type=Node,name=LocalNode",
   description = "Node running the webdriver sessions.")
 public class LocalNode extends Node {
@@ -317,9 +317,9 @@ public Either<WebDriverException, CreateSessionResponse> newSession(CreateSessio
       if (slotToUse == null) {
         span.setAttribute("error", true);
         span.setStatus(Status.NOT_FOUND);
-        span.addEvent("No slot matched the requested capabilities. All slots are busy.", attributeMap);
+        span.addEvent("No slot matched the requested capabilities. ", attributeMap);
         return Either.left(
-          new RetrySessionRequestException("No slot matched the requested capabilities. All slots are busy."));
+          new RetrySessionRequestException("No slot matched the requested capabilities."));
       }
 
       Either<WebDriverException, ActiveSession> possibleSession = slotToUse.apply(sessionRequest);