FIT performers: add hardcoded fallback for introspected version failure

Change-Id: Ie762c10747c1b251ee1bcd59b97d67b6c2773d8e
Reviewed-on: https://review.couchbase.org/c/couchbase-jvm-clients/+/202090
Tested-by: Graham Pople <[email protected]>
Reviewed-by: Graham Pople <[email protected]>
Tested-by: Build Bot <[email protected]>

Author: programmatix

java-fit-performer/src/main/java/com/couchbase/PerformerService.java

@@ -128,7 +128,13 @@ protected TransactionCommandExecutor transactionsExecutor(com.couchbase.client.p
     @Override
     protected void customisePerformerCaps(PerformerCapsFetchResponse.Builder response) {
         response.addAllSdkImplementationCaps(Capabilities.sdkImplementationCaps());
-        response.setLibraryVersion(VersionUtil.introspectSDKVersionJava());
+        var sdkVersion = VersionUtil.introspectSDKVersionJava();
+        if (sdkVersion == null) {
+            // Not entirely clear why this fails sometimes on CI, return something sort of sensible as a default.
+            sdkVersion = "3.5.0";
+            logger.warn("Unable to introspect the sdk version, forcing it to {}", sdkVersion);
+        }
+        response.setLibraryVersion(sdkVersion);
 
         // [start:3.3.0]
         for (Extension ext : Extension.SUPPORTED) {

scala-fit-performer/src/main/scala/com/couchbase/client/performer/scala/ScalaPerformer.scala

@@ -94,7 +94,16 @@ class ScalaPerformer extends CorePerformer {
       val supported = new Supported
       val protocolVersion = supported.protocolMajor + "." + supported.protocolMinor
       response.setTransactionsProtocolVersion("2.0")
-      response.setLibraryVersion(VersionUtil.introspectSDKVersionScala)
+      val sdkVersionRaw = VersionUtil.introspectSDKVersionScala
+      val sdkVersion = if (sdkVersionRaw == null) {
+        // Not entirely clear why this fails sometimes on CI, return something sort of sensible as a default.
+        logger.warn("Unable to introspect the sdk version, forcing it to 1.5.0")
+        "1.5.0"
+      }
+      else {
+        sdkVersionRaw
+      }
+      response.setLibraryVersion(sdkVersion)
 
       Extension.SUPPORTED.asScala
         .filterNot(v =>