Demos now fully handle process managment except in the case where the process is killed with something like pkill or the JVM being ended by task manager.

.idea/modules.xml

@@ -22,7 +22,6 @@
       <module fileurl="file://$PROJECT_DIR$/.idea/modules/node/node_test.iml" filepath="$PROJECT_DIR$/.idea/modules/node/node_test.iml" group="node" />
       <module fileurl="file://$PROJECT_DIR$/.idea/modules/r3prototyping.iml" filepath="$PROJECT_DIR$/.idea/modules/r3prototyping.iml" />
       <module fileurl="file://$PROJECT_DIR$/.idea/modules/r3prototyping_integrationTest.iml" filepath="$PROJECT_DIR$/.idea/modules/r3prototyping_integrationTest.iml" group="r3prototyping" />
-      <module fileurl="file://$PROJECT_DIR$/.idea/modules/r3prototyping_integrationTest.iml" filepath="$PROJECT_DIR$/.idea/modules/r3prototyping_integrationTest.iml" group="r3prototyping" />
       <module fileurl="file://$PROJECT_DIR$/.idea/modules/r3prototyping_main.iml" filepath="$PROJECT_DIR$/.idea/modules/r3prototyping_main.iml" group="r3prototyping" />
       <module fileurl="file://$PROJECT_DIR$/.idea/modules/r3prototyping_test.iml" filepath="$PROJECT_DIR$/.idea/modules/r3prototyping_test.iml" group="r3prototyping" />
     </modules>

src/integration-test/kotlin/com/r3corda/core/testing/IRSDemoTest.kt

@@ -1,12 +1,10 @@
 package com.r3corda.core.testing
 
-import com.r3corda.core.testing.utilities.spawn
+import com.r3corda.core.testing.utilities.*
-import com.r3corda.core.testing.utilities.waitForNodeStartup
 import kotlin.test.assertEquals
 import org.junit.Test
 import java.nio.file.Path
 import java.nio.file.Paths
-import java.util.concurrent.TimeUnit
 
 class IRSDemoTest {
     @Test fun `runs IRS demo`() {
@@ -32,34 +30,35 @@ class IRSDemoTest {
 private fun setupNode(dir: Path, nodeType: String) {
     val args = listOf("--role", "Setup" + nodeType, "--dir", dir.toString())
     val proc = spawn("com.r3corda.demos.IRSDemoKt", args)
-    assertEquals(proc.waitFor(2, TimeUnit.MINUTES), true);
+    assertExitOrKill(proc)
     assertEquals(proc.exitValue(), 0)
 }
 
 private fun startNode(dir: Path, nodeType: String, nodeAddr: String): Process {
     val args = listOf("--role", nodeType, "--dir", dir.toString())
     val proc = spawn("com.r3corda.demos.IRSDemoKt", args)
-    waitForNodeStartup(nodeAddr)
+    ensureNodeStartsOrKill(proc, nodeAddr)
     return proc
 }
 
 private fun runTrade() {
     val args = listOf("--role", "Trade", "trade1")
     val proc = spawn("com.r3corda.demos.IRSDemoKt", args)
-    assertEquals(proc.waitFor(2, TimeUnit.MINUTES), true);
+    assertExitOrKill(proc)
     assertEquals(proc.exitValue(), 0)
 }
 
 private fun runDateChange() {
     val args = listOf("--role", "Date", "2017-01-02")
     val proc = spawn("com.r3corda.demos.IRSDemoKt", args)
-    assertEquals(proc.waitFor(2, TimeUnit.MINUTES), true);
+    assertExitOrKill(proc)
     assertEquals(proc.exitValue(), 0)
 }
 
 private fun stopNode(nodeProc: Process?) {
-    assertEquals(nodeProc?.isAlive, true)
+    if(nodeProc != null) {
-    nodeProc?.destroy()
+        assertAliveAndKill(nodeProc)
+    }
 }
 
 private fun cleanup(dir: Path) {

src/integration-test/kotlin/com/r3corda/core/testing/TraderDemoTest.kt

@@ -1,40 +1,44 @@
 package com.r3corda.core.testing
 
+import com.r3corda.core.testing.utilities.assertExitOrKill
+import com.r3corda.core.testing.utilities.ensureNodeStartsOrKill
 import com.r3corda.core.testing.utilities.spawn
-import com.r3corda.core.testing.utilities.waitForNodeStartup
 import org.junit.Test
 import java.nio.file.Paths
-import java.util.concurrent.TimeUnit
 import kotlin.test.assertEquals
 
 class TraderDemoTest {
     @Test fun `runs trader demo`() {
         var nodeProc: Process? = null
         try {
+            cleanupFiles()
             nodeProc = runBuyer()
             runSeller()
         } finally {
             nodeProc?.destroy()
-            cleanup()
+            cleanupFiles()
         }
     }
 }
 
 private fun runBuyer(): Process {
+    println("Running Buyer")
     val args = listOf("--role", "BUYER")
     val proc = spawn("com.r3corda.demos.TraderDemoKt", args)
-    waitForNodeStartup("http://localhost:31338")
+    ensureNodeStartsOrKill(proc, "http://localhost:31338")
     return proc
 }
 
 private fun runSeller() {
+    println("Running Seller")
     val args = listOf("--role", "SELLER")
     val proc = spawn("com.r3corda.demos.TraderDemoKt", args)
-    assertEquals(proc.waitFor(30, TimeUnit.SECONDS), true);
+    assertExitOrKill(proc);
     assertEquals(proc.exitValue(), 0)
 }
 
-private fun cleanup() {
+private fun cleanupFiles() {
+    println("Cleaning up TraderDemoTest files")
     val dir = Paths.get("trader-demo")
     println("Erasing " + dir)
     dir.toFile().deleteRecursively()

src/integration-test/kotlin/com/r3corda/core/testing/utilities/JVMSpawner.kt

@@ -1,6 +1,8 @@
 package com.r3corda.core.testing.utilities
 
 import java.nio.file.Paths
+import java.util.concurrent.TimeUnit
+import kotlin.test.assertEquals
 
 fun spawn(className: String, args: List<String>): Process {
     val separator = System.getProperty("file.separator")
@@ -9,7 +11,23 @@ fun spawn(className: String, args: List<String>): Process {
     val javaArgs = listOf(path, "-javaagent:lib/quasar.jar",  "-cp", classpath, className)
     val builder = ProcessBuilder(javaArgs + args)
     builder.redirectError(Paths.get("error.$className.log").toFile())
-    builder.inheritIO()
     val process = builder.start();
     return process
 }
+
+fun assertExitOrKill(proc: Process) {
+    try {
+        assertEquals(proc.waitFor(2, TimeUnit.MINUTES), true)
+    } catch (e: Throwable) {
+        proc.destroy()
+        throw e
+    }
+}
+
+fun assertAliveAndKill(proc: Process) {
+    try {
+        assertEquals(proc.isAlive, true)
+    } finally {
+        proc.destroy()
+    }
+}

src/integration-test/kotlin/com/r3corda/core/testing/utilities/NodeApi.kt

@@ -2,14 +2,26 @@ package com.r3corda.core.testing.utilities
 
 import java.io.InputStreamReader
 import java.net.ConnectException
+import java.net.SocketException
 import java.net.HttpURLConnection
 import java.net.URL
+import kotlin.test.assertEquals
 
 class NodeDidNotStartException: Throwable {
     constructor(message: String): super(message) {}
 }
 
-fun waitForNodeStartup(nodeAddr: String) {
+fun ensureNodeStartsOrKill(proc: Process, nodeAddr: String) {
+    try {
+        assertEquals(proc.isAlive, true)
+        waitForNodeStartup(nodeAddr)
+    } catch (e: Exception) {
+        proc.destroy()
+        throw e
+    }
+}
+
+private fun waitForNodeStartup(nodeAddr: String) {
     var retries = 0
     var respCode: Int
     do {
@@ -24,6 +36,9 @@ fun waitForNodeStartup(nodeAddr: String) {
             // This is to be expected while it loads up
             respCode = 404
             "Node hasn't started"
+        } catch(e: SocketException) {
+            respCode = -1
+            "Could not connect: ${e.toString()}"
         }
 
         if(retries > 200) {