Adapt the turtle env node test to use the new TestNode

Author: Gavin Norman

integrationtest/turtleenv/main.d

@@ -1,6 +1,6 @@
 /*******************************************************************************
 
-    Test of the abstract turtle node extension.
+    Test of the turtle swarm node extension.
 
     Copyright:
         Copyright (c) 2018 dunnhumby Germany GmbH. All rights reserved.
@@ -12,103 +12,246 @@
 
 module integrationtest.turtleenv.main;
 
-import swarm.neo.AddrPort;
-import turtle.env.model.Node;
+import ocean.transition;
+import ocean.task.Scheduler;
+import ocean.task.Task;
 import ocean.util.test.DirectorySandbox;
-import ocean.core.Test;
-import ocean.io.device.File;
+import swarm.Const : ICommandCodes, NodeItem;
+import swarm.node.connection.ConnectionHandler;
+import turtle.env.model.TestNode;
 
-/// Node used to the turtle test
-private class TurtleNode
+version (UnitTest){}
+else
+void main()
 {
-    /// Address and the port of the node
-    AddrPort addrport;
-    AddrPort neo_address;
+    auto sandbox = DirectorySandbox.create();
+    scope (success)
+        sandbox.remove();
 
-    this (AddrPort addrport)
-    {
-        this.addrport = addrport;
-        this.neo_address = AddrPort(this.addrport.address());
-        this.neo_address.port = cast(ushort)(this.addrport.port() + 100);
-    }
+    initScheduler(Scheduler.Configuration.init);
+
+    auto node = new MyNode("127.0.0.1", 10000);
+    node.start();
+
+    theScheduler.schedule(new Tests(node));
+    theScheduler.eventLoop();
 }
 
-/// The turlte TurtleNode class
-private class TestNode : Node!(TurtleNode, "turtleNode")
+/*******************************************************************************
+
+    Task that performs tests on the test node passed to the ctor.
+
+*******************************************************************************/
+
+class Tests : Task
 {
-    /***********************************************************************
+    import integrationtest.neo.client.Client;
+    import ocean.core.Test;
+    import ocean.io.device.File;
+
+    /// Node instance to test.
+    private MyNode node;
+
+    /// Client instance to use for checking network availability of the node.
+    private Client client;
 
-        Creates a fake node at the specified address/port.
+    /***************************************************************************
+
+        Constructor.
 
         Params:
-            node_item = address/port
+            node = node to test
+
+    ***************************************************************************/
+
+    public this ( MyNode node )
+    {
+        this.node = node;
+    }
+
+    /***************************************************************************
 
-    ***********************************************************************/
+        Task entry point. Runs a series of tests on the node then shuts down the
+        scheduler.
 
-    override protected TurtleNode createNode ( AddrPort addrport )
+    ***************************************************************************/
+
+    public override void run ( )
     {
-        return new TurtleNode(addrport);
+        // Test config file generation.
+        this.node.genConfigFiles(".");
+        test!("==")(File.get("testnode.nodes"), "127.0.0.1:9999\n");
+        test!("==")(File.get("testnode.neo.nodes"), "127.0.0.1:10000\n");
+
+        // Initialise client and connect.
+        this.client = new Client(theScheduler.epoll, "127.0.0.1", 10000,
+            &this.connNotifier);
+        client.blocking.waitAllNodesConnected();
+
+        // Try to talk to the node.
+        auto ok = this.talkToNode();
+        test(ok);
+
+        // Stop the node, then try to talk to it (failure expected).
+        this.node.stop();
+        ok = this.talkToNode();
+        test(!ok);
+
+        // Restart the node, reconnect the client, then try to talk to the node.
+        this.node.restart();
+        client.blocking.waitAllNodesConnected();
+        ok = this.talkToNode();
+        test(ok);
+
+        // Finished.
+        theScheduler.shutdown();
     }
 
-    /***********************************************************************
+    /***************************************************************************
+
+        Uses the client to put a record to the node, then read it back.
 
         Returns:
-            address/port on which node is listening
+            true if everything succeeded, false on error
 
-    ***********************************************************************/
+    ***************************************************************************/
 
-    override public AddrPort node_addrport ( )
+    private bool talkToNode ( )
     {
-        assert(this.node);
-        return this.node.addrport;
+        auto ok = client.blocking.put(1, "hello",
+            ( Client.Neo.Put.Notification, Const!(Client.Neo.Put.Args) ) { });
+        if ( !ok )
+            return false;
+
+        void[] value;
+        ok = client.blocking.get(1, value,
+            ( Client.Neo.Get.Notification, Const!(Client.Neo.Get.Args) ) { });
+        if ( !ok )
+            return false;
+
+        return true;
     }
 
-    /***********************************************************************
+    /***************************************************************************
 
-        Fake node service stop implementation.
+        Dummy connection notifier. Required by the client, but unused.
 
-    ***********************************************************************/
+    ***************************************************************************/
 
-    protected override void stopImpl ( )
+    private void connNotifier ( Client.Neo.ConnNotification info )
     {
     }
+}
+
+/*******************************************************************************
+
+    Test node implementing the protocol defined in integrationtest.neo.node.
+
+*******************************************************************************/
+
+public class MyNode : TestNode!(ConnHandler)
+{
+    import swarm.neo.AddrPort;
 
-    /***********************************************************************
+    import integrationtest.neo.node.Node;
+    import integrationtest.neo.node.Storage;
+    import integrationtest.neo.node.request.Get;
+    import integrationtest.neo.node.request.Put;
+
+    /***************************************************************************
+
+        Constructor.
+
+        Params:
+            addr = address to bind to
+            neo_port = port to bind to for neo protocol (legacy protocol binds
+                to a port one lower)
+
+    ***************************************************************************/
+
+    public this ( cstring addr, ushort neo_port )
+    {
+        // In this simple example node implementation, we don't need any shared
+        // resources except the reference to the storage.
+        this.shared_resources = new Storage;
+
+        Options options;
+        options.epoll = theScheduler.epoll;
+        options.requests.addHandler!(GetImpl_v0)();
+        options.credentials_map["dummy"] = Key.init;
+        options.shared_resources = this.shared_resources;
+
+        options.requests.addHandler!(GetImpl_v0)();
+        options.requests.addHandler!(PutImpl_v0)();
+
+        const backlog = 1_000;
+        AddrPort legacy_addr_port;
+        legacy_addr_port.setAddress(addr);
+        legacy_addr_port.port = cast(ushort)(neo_port - 1);
+        super(legacy_addr_port, neo_port, new ConnectionSetupParams,
+            options, backlog);
+    }
+
+    /***************************************************************************
 
         Removes all data from the fake node service.
 
-    ***********************************************************************/
+    ***************************************************************************/
 
     override public void clear ( )
     {
+        // Unused in this test.
+    }
+
+    /***************************************************************************
+
+        Returns:
+            identifier string for this node
+
+    ***************************************************************************/
+
+    protected override cstring id ( )
+    {
+        return "testnode";
     }
 
-    /***********************************************************************
+    /***************************************************************************
 
-        Suppresses log output from the fake node if used version of proto
-        supports it.
+        Scope allocates a request resource acquirer backed by the protected
+        `shared_resources`. (Passed as a generic Object to avoid templatising
+        this class and others that depend on it.)
 
-    ***********************************************************************/
+        Params:
+            handle_request_dg = delegate that receives a resources acquirer and
+                initiates handling of a request
+
+    ***************************************************************************/
 
-    override public void log_errors ( bool log_errors )
+    override protected void getResourceAcquirer (
+        void delegate ( Object resource_acquirer ) handle_request_dg )
     {
-        static if (is(typeof(this.node.log_errors(log_errors))))
-            this.node.log_errors(log_errors);
+        handle_request_dg(this.shared_resources);
     }
 }
 
-version (UnitTest){}
-else
-void main()
+/*******************************************************************************
+
+    Legacy protocol connection handler. Required by NodeBase but unused in this
+    example.
+
+*******************************************************************************/
+
+private class ConnHandler : ConnectionHandlerTemplate!(ICommandCodes)
 {
-    auto sandbox = DirectorySandbox.create();
-    scope (success)
-        sandbox.remove();
+    import ocean.net.server.connection.IConnectionHandler;
+
+    public this ( void delegate(IConnectionHandler) finaliser,
+        ConnectionSetupParams params )
+    {
+        super(finaliser, params);
+    }
 
-    auto node = new TestNode();
-    node.start("127.0.0.1", 10000);
-    node.genConfigFiles(".");
+    override protected void handleCommand () {}
 
-    test!("==")(File.get("turtleNode.nodes"), "127.0.0.1:10000\n");
-    test!("==")(File.get("turtleNode.neo.nodes"), "127.0.0.1:10100\n");
+    override protected void handleNone () {}
 }