Pre-generate Corda classes for DJVM sandbox when node boots in production mode.

core-deterministic/build.gradle

@@ -56,6 +56,7 @@ task patchCore(type: Zip, dependsOn: coreJarTask) {
     archiveExtension = 'jar'
 
     from(compileKotlin)
+    from(processResources)
     from(zipTree(originalJar)) {
         exclude 'net/corda/core/internal/*ToggleField*.class'
         exclude 'net/corda/core/serialization/*SerializationFactory*.class'

node/src/main/kotlin/net/corda/node/internal/AbstractNode.kt

@@ -216,7 +216,13 @@ abstract class AbstractNode<S>(val configuration: NodeConfiguration,
     @Suppress("LeakingThis")
     val transactionVerifierService = InMemoryTransactionVerifierService(transactionVerifierWorkerCount).tokenize()
     val verifierFactoryService: VerifierFactoryService = if (djvmCordaSource != null) {
-        DeterministicVerifierFactoryService(djvmBootstrapSource, djvmCordaSource).tokenize()
+        DeterministicVerifierFactoryService(djvmBootstrapSource, djvmCordaSource).apply {
+            if (!configuration.devMode) {
+                log.info("Generating Corda classes for DJVM sandbox.")
+                generateSandbox()
+            }
+            tokenize()
+        }
     } else {
         BasicVerifierFactoryService()
     }

node/src/main/kotlin/net/corda/node/services/transactions/DeterministicVerifierFactoryService.kt

@@ -46,6 +46,14 @@ class DeterministicVerifierFactoryService(
         )
     }
 
+    /**
+     * Generate sandbox classes for every Corda jar with META-INF/DJVM-preload.
+     */
+    fun generateSandbox(): DeterministicVerifierFactoryService {
+        baseSandboxConfiguration.preload()
+        return this
+    }
+
     override fun apply(ledgerTransaction: LedgerTransaction): LedgerTransaction {
         // Specialise the LedgerTransaction here so that
         // contracts are verified inside the DJVM!

serialization-deterministic/build.gradle

@@ -54,6 +54,7 @@ task patchSerialization(type: Zip, dependsOn: serializationJarTask) {
     archiveExtension = 'jar'
 
     from(compileKotlin)
+    from(processResources)
     from(zipTree(originalJar)) {
         exclude 'net/corda/serialization/internal/AttachmentsClassLoaderBuilder*'
         exclude 'net/corda/serialization/internal/ByteBufferStreams*'