[CORDA-879] Generate node directories as part of bootstrapping (#2285)

* Generate node directories as part of bootstrapping

* Include latest corda.jar in bootstrapper package
Remove SLF4J warnings on startup

* Changes post review

* More review changes

* Review changes

* Making docs clearer

docs/source/setting-up-a-corda-network.rst

@@ -67,10 +67,21 @@ The bootstrapper tool can be built with the command:
 
 The resulting jar can be found in ``tools/bootstrapper/build/libs/``.
 
-To use it, run the following command, specifying the root directory which hosts all the node directories as the argument:
+To use it, create a directory containing a ``node.conf`` file for each node you want to create. Then run the following command:
 
 ``java -jar network-bootstrapper.jar <nodes-root-dir>``
 
+For example running the command on a directory containing these files :
+
+.. sourcecode:: none
+
+    .
+    ├── notary.conf             // The notary's node.conf file
+    ├── partya.conf             // Party A's node.conf file
+    └── partyb.conf             // Party B's node.conf file
+
+Would generate directories containing three nodes: notary, partya and partyb.
+
 Starting the nodes
 ~~~~~~~~~~~~~~~~~~
 

node-api/src/main/kotlin/net/corda/nodeapi/internal/network/NetworkBootstrapper.kt

@@ -19,6 +19,7 @@ import net.corda.nodeapi.internal.serialization.SerializationFactoryImpl
 import net.corda.nodeapi.internal.serialization.amqp.AMQPServerSerializationScheme
 import net.corda.nodeapi.internal.serialization.kryo.AbstractKryoSerializationScheme
 import net.corda.nodeapi.internal.serialization.kryo.KryoHeaderV0_1
+import java.nio.file.Files
 import java.nio.file.Path
 import java.nio.file.Paths
 import java.nio.file.StandardCopyOption
@@ -52,6 +53,7 @@ class NetworkBootstrapper {
     fun bootstrap(directory: Path) {
         directory.createDirectories()
         println("Bootstrapping local network in $directory")
+        generateDirectoriesIfNeeded(directory)
         val nodeDirs = directory.list { paths -> paths.filter { (it / "corda.jar").exists() }.toList() }
         require(nodeDirs.isNotEmpty()) { "No nodes found" }
         println("Nodes found in the following sub-directories: ${nodeDirs.map { it.fileName }}")
@@ -73,6 +75,27 @@ class NetworkBootstrapper {
         }
     }
 
+    private fun generateDirectoriesIfNeeded(directory: Path) {
+        val confFiles = directory.list { it.filter { it.toString().endsWith(".conf") }.toList() }
+        if (confFiles.isEmpty()) return
+        println("Node config files found in the root directory - generating node directories")
+        val cordaJar = extractCordaJarTo(directory)
+        for (confFile in confFiles) {
+            val nodeName = confFile.fileName.toString().removeSuffix(".conf")
+            println("Generating directory for $nodeName")
+            val nodeDir = (directory / nodeName).createDirectory()
+            confFile.moveTo(nodeDir / "node.conf")
+            Files.copy(cordaJar, (nodeDir / "corda.jar"))
+        }
+        Files.delete(cordaJar)
+    }
+
+    private fun extractCordaJarTo(directory: Path): Path {
+        val cordaJarPath = (directory / "corda.jar")
+        Thread.currentThread().contextClassLoader.getResourceAsStream("corda.jar").copyTo(cordaJarPath)
+        return cordaJarPath
+    }
+
     private fun startNodeInfoGeneration(nodeDirs: List<Path>): List<Process> {
         return nodeDirs.map { nodeDir ->
             val logsDir = (nodeDir / LOGS_DIR_NAME).createDirectories()
@@ -172,6 +195,7 @@ class NetworkBootstrapper {
         override fun canDeserializeVersion(byteSequence: ByteSequence, target: SerializationContext.UseCase): Boolean {
             return byteSequence == KryoHeaderV0_1 && target == SerializationContext.UseCase.P2P
         }
+
         override fun rpcClientKryoPool(context: SerializationContext) = throw UnsupportedOperationException()
         override fun rpcServerKryoPool(context: SerializationContext) = throw UnsupportedOperationException()
     }

tools/bootstrapper/build.gradle

@@ -6,7 +6,10 @@ configurations {
     runtimeArtifacts
 }
 
-// TODO Fix SLF4J warnings that occur when running the bootstrapper
+dependencies {
+    compile "org.slf4j:slf4j-nop:$slf4j_version"
+}
+
 task buildBootstrapperJar(type: FatCapsule, dependsOn: project(':node-api').compileJava) {
     applicationClass 'net.corda.nodeapi.internal.network.NetworkBootstrapper'
     archiveName "network-bootstrapper.jar"
@@ -16,6 +19,9 @@ task buildBootstrapperJar(type: FatCapsule, dependsOn: project(':node-api').comp
         minJavaVersion = '1.8.0'
         jvmArgs = ['-XX:+UseG1GC']
     }
+    from(project(':node:capsule').tasks['buildCordaJAR']) {
+        rename 'corda-(.*)', 'corda.jar'
+    }
     applicationSource = files(
             project(':node-api').configurations.runtime,
             project(':node-api').jar