Fixed the CorDapp configuration demo (#2967)

constants.properties

@@ -1,4 +1,4 @@
-gradlePluginsVersion=4.0.11
+gradlePluginsVersion=4.0.12
 kotlinVersion=1.2.20
 platformVersion=4
 guavaVersion=21.0

node/src/main/kotlin/net/corda/node/internal/cordapp/CordappConfigFileProvider.kt

@@ -2,7 +2,6 @@ package net.corda.node.internal.cordapp
 
 import com.typesafe.config.Config
 import com.typesafe.config.ConfigFactory
-import net.corda.core.internal.cordapp.CordappConfigProvider
 import net.corda.core.utilities.loggerFor
 import java.io.File
 

node/src/main/kotlin/net/corda/node/internal/cordapp/CordappConfigProvider.kt

@@ -1,4 +1,4 @@
-package net.corda.core.internal.cordapp
+package net.corda.node.internal.cordapp
 
 import com.typesafe.config.Config
 

node/src/main/kotlin/net/corda/node/internal/cordapp/CordappProviderImpl.kt

@@ -7,7 +7,6 @@ import net.corda.core.cordapp.Cordapp
 import net.corda.core.cordapp.CordappContext
 import net.corda.core.crypto.SecureHash
 import net.corda.core.internal.DEPLOYED_CORDAPP_UPLOADER
-import net.corda.core.internal.cordapp.CordappConfigProvider
 import net.corda.core.internal.createCordappContext
 import net.corda.core.node.services.AttachmentId
 import net.corda.core.node.services.AttachmentStorage

node/src/test/kotlin/net/corda/node/internal/cordapp/CordappProviderImplTests.kt

@@ -2,15 +2,12 @@ package net.corda.node.internal.cordapp
 
 import com.typesafe.config.Config
 import com.typesafe.config.ConfigFactory
-import junit.framework.Assert.assertNull
-import net.corda.core.internal.cordapp.CordappConfigProvider
 import net.corda.core.node.services.AttachmentStorage
 import net.corda.testing.common.internal.testNetworkParameters
 import net.corda.testing.internal.MockCordappConfigProvider
 import net.corda.testing.services.MockAttachmentStorage
 import org.assertj.core.api.Assertions.assertThat
-import org.junit.Assert.assertEquals
-import org.junit.Assert.assertNotNull
+import org.junit.Assert.*
 import org.junit.Before
 import org.junit.Test
 import java.net.URL
@@ -19,9 +16,9 @@ class CordappProviderImplTests {
     private companion object {
         val isolatedJAR = this::class.java.getResource("isolated.jar")!!
         // TODO: Cordapp name should differ from the JAR name
-        val isolatedCordappName = "isolated"
+        const val isolatedCordappName = "isolated"
         val emptyJAR = this::class.java.getResource("empty.jar")!!
-        val validConfig = ConfigFactory.parseString("key=value")
+        val validConfig: Config = ConfigFactory.parseString("key=value")
 
         val stubConfigProvider = object : CordappConfigProvider {
             override fun getConfigByName(name: String): Config = ConfigFactory.empty()
@@ -77,7 +74,7 @@ class CordappProviderImplTests {
     @Test
     fun `test cordapp configuration`() {
         val configProvider = MockCordappConfigProvider()
-        configProvider.cordappConfigs.put(isolatedCordappName, validConfig)
+        configProvider.cordappConfigs[isolatedCordappName] = validConfig
         val loader = CordappLoader.createDevMode(listOf(isolatedJAR))
         val provider = CordappProviderImpl(loader, configProvider, attachmentStore, whitelistedContractImplementations)
 

samples/cordapp-configuration/README.md

@@ -6,18 +6,18 @@ This sample shows a simple example of how to use per-cordapp configuration. It i
 * Gradle build file to show how to install your Cordapp configuration
 * A flow that consumes the Cordapp configuration
 
-## Usage
+To run from the command line in Unix:
 
-To run the sample you must first build it from the project root with;
+1. Run ``./gradlew samples:cordapp-configuration:deployNodes`` to create a set of configs and installs under 
+   ``samples/cordapp-configuration/build/nodes``
+2. Run ``./samples/cordapp-configuration/build/nodes/runnodes`` to open up three new terminals with the three nodes
+3. At the shell prompt for Bank A or Bank B run ``start net.corda.configsample.GetStringConfigFlow configKey: someStringValue``.
+   This will start the flow and read the `someStringValue` CorDapp config.
 
-    ./gradlew deployNodes
+To run from the command line in Windows:
 
-This will deploy the node with the configuration installed. 
-The relevant section is the ``deployNodes`` task.
-
-## Running
-
-* Windows: `build\nodes\runnodes`
-* Mac/Linux: `./build/nodes/runnodes`
-
-Once the nodes have started up and show a prompt you can now run your flow. 
+1. Run ``gradlew samples:cordapp-configuration:deployNodes`` to create a set of configs and installs under 
+   ``samples\cordapp-configuration\build\nodes``
+2. Run ``samples\cordapp-configuration\build\nodes\runnodes`` to open up three new terminals with the three nodes
+3. At the shell prompt for Bank A or Bank B run ``start net.corda.configsample.GetStringConfigFlow configKey: someStringValue``.
+   This will start the flow and read the `someStringValue` CorDapp config.

samples/cordapp-configuration/src/main/kotlin/net/corda/configsample/ConfigSampleFlow.kt

@@ -1,10 +0,0 @@
-package net.corda.configsample
-
-import net.corda.core.flows.FlowLogic
-
-class ConfigSampleFlow : FlowLogic<String>() {
-    override fun call(): String {
-        val config = serviceHub.getAppContext().config
-        return config.getString("someStringValue")
-    }
-}

samples/cordapp-configuration/src/main/kotlin/net/corda/configsample/GetStringConfigFlow.kt

@@ -0,0 +1,19 @@
+package net.corda.configsample
+
+import co.paralleluniverse.fibers.Suspendable
+import net.corda.core.flows.FlowLogic
+import net.corda.core.flows.StartableByRPC
+import net.corda.core.utilities.ProgressTracker
+
+@StartableByRPC
+class GetStringConfigFlow(private val configKey: String) : FlowLogic<String>() {
+    object READING : ProgressTracker.Step("Reading config")
+    override val progressTracker = ProgressTracker(READING)
+
+    @Suspendable
+    override fun call(): String {
+        progressTracker.currentStep = READING
+        val config = serviceHub.getAppContext().config
+        return config.getString(configKey)
+    }
+}

testing/test-utils/src/main/kotlin/net/corda/testing/internal/MockCordappConfigProvider.kt

@@ -2,7 +2,7 @@ package net.corda.testing.internal
 
 import com.typesafe.config.Config
 import com.typesafe.config.ConfigFactory
-import net.corda.core.internal.cordapp.CordappConfigProvider
+import net.corda.node.internal.cordapp.CordappConfigProvider
 
 class MockCordappConfigProvider : CordappConfigProvider {
     val cordappConfigs = mutableMapOf<String, Config> ()