CORDA-3028: Add Node Diagnostics Info RPC Call (#5271)

* CORDA-3028: Add Node Diagnostics Info RPC Call - Initial commit

* CORDA-3028: Add Node Diagnostics Info RPC Call - Changes after code review

* CORDA-3028: Add Node Diagnostics Info RPC Call - Additional code review update and documentation

* CORDA-3028: Add Node Diagnostics Info RPC Call - Additional changes to documentation

* CORDA-3028: Add Node Diagnostics Info RPC Call - Another change to documentation

* CORDA-3028: Add Node Diagnostics Info RPC Call - More changes to documentation

* CORDA-3028: Add Node Diagnostics Info RPC Call - Comment change

core/src/main/kotlin/net/corda/core/cordapp/CordappInfo.kt

@@ -0,0 +1,15 @@
+package net.corda.core.cordapp
+
+import net.corda.core.crypto.SecureHash
+import net.corda.core.serialization.CordaSerializable
+
+@CordaSerializable
+data class CordappInfo(val type: String,
+                       val name: String,
+                       val shortName: String,
+                       val minimumPlatformVersion: Int,
+                       val targetPlatformVersion: Int,
+                       val version: String,
+                       val vendor: String,
+                       val licence: String,
+                       val jarHash: SecureHash.SHA256)

core/src/main/kotlin/net/corda/core/messaging/CordaRPCOps.kt

@@ -12,6 +12,7 @@ import net.corda.core.identity.AbstractParty
 import net.corda.core.identity.CordaX500Name
 import net.corda.core.identity.Party
 import net.corda.core.node.NetworkParameters
+import net.corda.core.node.NodeDiagnosticInfo
 import net.corda.core.node.NodeInfo
 import net.corda.core.node.services.AttachmentId
 import net.corda.core.node.services.NetworkMapCache
@@ -280,6 +281,11 @@ interface CordaRPCOps : RPCOps {
     /** Returns Node's NodeInfo, assuming this will not change while the node is running. */
     fun nodeInfo(): NodeInfo
 
+    /**
+     * Returns Node's NodeDiagnosticInfo, including the version details as well as the information about installed CorDapps.
+     */
+    fun nodeDiagnosticInfo(): NodeDiagnosticInfo
+
     /**
      * Returns network's notary identities, assuming this will not change while the node is running.
      *

core/src/main/kotlin/net/corda/core/node/NodeDiagnosticInfo.kt

@@ -0,0 +1,11 @@
+package net.corda.core.node
+
+import net.corda.core.cordapp.CordappInfo
+import net.corda.core.serialization.CordaSerializable
+
+@CordaSerializable
+data class NodeDiagnosticInfo(val version: String,
+                              val revision: String,
+                              val platformVersion: Int,
+                              val vendor: String,
+                              val cordapps: List<CordappInfo>)

docs/source/api-rpc.rst

@@ -17,8 +17,10 @@ The key RPC operations exposed by the node are:
     * Start one of the node's registered flows
 * ``CordaRPCOps.startTrackedFlowDynamic``
     * As above, but also returns a progress handle for the flow
+* ``CordaRPCOps.nodeDiagnosticInfo``
+    * Returns diagnostic information about the node, including the version and CorDapp details
 * ``CordaRPCOps.nodeInfo``
-    * Returns information about the node
+    * Returns the network map entry of the node, including its address and identity details as well as the platform version information
 * ``CordaRPCOps.currentNodeTime``
     * Returns the current time according to the node's clock
 * ``CordaRPCOps.partyFromKey/CordaRPCOps.wellKnownPartyFromX500Name``

docs/source/node-administration.rst

@@ -242,3 +242,40 @@ If the above holds, Corda components will benefit from the following:
 * A timely recovery from deletion or corruption of configuration files (e.g., ``node.conf``, ``node-info`` files, etc.), database drivers, CorDapps binaries and configuration, and certificate directories, provided backups are available to restore from.
 
 .. warning:: Private keys used to sign transactions should be preserved with the utmost care. The recommendation is to keep at least two separate copies on a storage not connected to the Internet.
+
+Checking node version and installed CorDapps
+--------------------------------------------
+
+A ``nodeDiagnosticInfo`` RPC call can be made to obtain version information about the Corda platform running on the node. The returned ``NodeDiagnosticInfo`` object also includes information about the CorDapps installed on the node.
+The RPC call is also available as the ``run nodeDiagnosticInfo`` command executable from the Corda shell that can be accessed via the local terminal, SSH, or as the standalone shell.
+
+Example
++++++++
+
+Here is a sample output displayed by the ``run nodeDiagnosticInfo`` command executed from the Corda shell:
+
+.. code-block:: none
+
+    version: "|corda_version|"
+    revision: "d7e4a0050049be357999f57f69d8bca41a2b8274"
+    platformVersion: 4
+    vendor: "Corda Open Source"
+    cordapps:
+    - type: "Contract CorDapp"
+      name: "corda-finance-contracts-|corda_version|"
+      shortName: "Corda Finance Demo"
+      minimumPlatformVersion: 1
+      targetPlatformVersion: 4
+      version: "1"
+      vendor: "R3"
+      licence: "Open Source (Apache 2)"
+      jarHash: "570EEB9DF4B43680586F3BE663F9C5844518BC2E410EAF9904E8DEE930B7E45C"
+    - type: "Workflow CorDapp"
+      name: "corda-finance-workflows-|corda_version|"
+      shortName: "Corda Finance Demo"
+      minimumPlatformVersion: 1
+      targetPlatformVersion: 4
+      version: "1"
+      vendor: "R3"
+      licence: "Open Source (Apache 2)"
+      jarHash: "6EA4E0B36010F1DD27B5677F3686B4713BA40C316804A4188DCA20F477FDB23F"

node/src/integration-test/kotlin/net/corda/node/NodeRPCTests.kt

@@ -0,0 +1,46 @@
+package net.corda.node
+
+import net.corda.core.internal.PLATFORM_VERSION
+import net.corda.testing.driver.DriverParameters
+import net.corda.testing.driver.driver
+import net.corda.testing.node.internal.FINANCE_CONTRACTS_CORDAPP
+import net.corda.testing.node.internal.FINANCE_WORKFLOWS_CORDAPP
+import org.junit.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertTrue
+
+class NodeRPCTests {
+    private val CORDA_VERSION_REGEX = "\\d+(\\.\\d+)?(-\\w+)?".toRegex() // e.g. "5.0-SNAPSHOT"
+    private val CORDA_VENDOR = "Corda Open Source"
+    private val CORDAPPS = listOf(FINANCE_CONTRACTS_CORDAPP, FINANCE_WORKFLOWS_CORDAPP)
+    private val CORDAPP_TYPES = setOf("Contract CorDapp", "Workflow CorDapp")
+    private val CORDAPP_CONTRACTS_NAME_REGEX = "corda-finance-contracts-$CORDA_VERSION_REGEX".toRegex()
+    private val CORDAPP_WORKFLOWS_NAME_REGEX = "corda-finance-workflows-$CORDA_VERSION_REGEX".toRegex()
+    private val CORDAPP_SHORT_NAME = "Corda Finance Demo"
+    private val CORDAPP_VENDOR = "R3"
+    private val CORDAPP_LICENCE = "Open Source (Apache 2)"
+    private val HEXADECIMAL_REGEX = "[0-9a-fA-F]+".toRegex()
+
+    @Test
+    fun `run nodeDiagnosticInfo`() {
+        driver(DriverParameters(notarySpecs = emptyList(), cordappsForAllNodes = CORDAPPS)) {
+            val nodeDiagnosticInfo = startNode().get().rpc.nodeDiagnosticInfo()
+            assertTrue(nodeDiagnosticInfo.version.matches(CORDA_VERSION_REGEX))
+            assertTrue(nodeDiagnosticInfo.revision.matches(HEXADECIMAL_REGEX))
+            assertEquals(PLATFORM_VERSION, nodeDiagnosticInfo.platformVersion)
+            assertEquals(CORDA_VENDOR, nodeDiagnosticInfo.vendor)
+            assertEquals(CORDAPPS.size, nodeDiagnosticInfo.cordapps.size)
+            assertEquals(CORDAPP_TYPES, nodeDiagnosticInfo.cordapps.map { it.type }.toSet())
+            assertTrue(nodeDiagnosticInfo.cordapps.any { it.name.matches(CORDAPP_CONTRACTS_NAME_REGEX) })
+            assertTrue(nodeDiagnosticInfo.cordapps.any { it.name.matches(CORDAPP_WORKFLOWS_NAME_REGEX) })
+            val cordappInfo = nodeDiagnosticInfo.cordapps.first()
+            assertEquals(CORDAPP_SHORT_NAME, cordappInfo.shortName)
+            assertTrue(cordappInfo.version.all { it.isDigit() })
+            assertEquals(CORDAPP_VENDOR, cordappInfo.vendor)
+            assertEquals(CORDAPP_LICENCE, cordappInfo.licence)
+            assertTrue(cordappInfo.minimumPlatformVersion <= PLATFORM_VERSION)
+            assertTrue(cordappInfo.targetPlatformVersion <= PLATFORM_VERSION)
+            assertTrue(cordappInfo.jarHash.toString().matches(HEXADECIMAL_REGEX))
+        }
+    }
+}

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

@@ -1,11 +1,14 @@
 package net.corda.node.internal
 
 import net.corda.client.rpc.notUsed
+import net.corda.common.logging.CordaVersion
 import net.corda.core.CordaRuntimeException
 import net.corda.core.concurrent.CordaFuture
 import net.corda.core.context.InvocationContext
 import net.corda.core.context.InvocationOrigin
 import net.corda.core.contracts.ContractState
+import net.corda.core.cordapp.Cordapp
+import net.corda.core.cordapp.CordappInfo
 import net.corda.core.crypto.SecureHash
 import net.corda.core.flows.FlowInitiator
 import net.corda.core.flows.FlowLogic
@@ -21,6 +24,7 @@ import net.corda.core.internal.messaging.InternalCordaRPCOps
 import net.corda.core.internal.sign
 import net.corda.core.messaging.*
 import net.corda.core.node.NetworkParameters
+import net.corda.core.node.NodeDiagnosticInfo
 import net.corda.core.node.NodeInfo
 import net.corda.core.node.services.AttachmentId
 import net.corda.core.node.services.NetworkMapCache
@@ -165,6 +169,32 @@ internal class CordaRPCOpsImpl(
         return services.myInfo
     }
 
+    override fun nodeDiagnosticInfo(): NodeDiagnosticInfo {
+        return NodeDiagnosticInfo(
+                version = CordaVersion.releaseVersion,
+                revision = CordaVersion.revision,
+                platformVersion = CordaVersion.platformVersion,
+                vendor = CordaVersion.vendor,
+                cordapps = services.cordappProvider.cordapps
+                            .filter { !it.jarPath.toString().endsWith("corda-core-${CordaVersion.releaseVersion}.jar") }
+                            .map { CordappInfo(
+                                    type = when (it.info) {
+                                        is Cordapp.Info.Contract -> "Contract CorDapp"
+                                        is Cordapp.Info.Workflow -> "Workflow CorDapp"
+                                        else -> "CorDapp"
+                                    },
+                                    name = it.name,
+                                    shortName = it.info.shortName,
+                                    minimumPlatformVersion = it.minimumPlatformVersion,
+                                    targetPlatformVersion = it.targetPlatformVersion,
+                                    version = it.info.version,
+                                    vendor = it.info.vendor,
+                                    licence = it.info.licence,
+                                    jarHash = it.jarHash)
+                            }
+        )
+    }
+
     override fun notaryIdentities(): List<Party> {
         return services.networkMapCache.notaryIdentities
     }