Integrate .NET driver examples into automated build process

gremlin-dotnet/Examples/BasicGremlin/BasicGremlin.cs

@@ -23,28 +23,32 @@ under the License.
 
 public class BasicGremlinExample
 {
+    static readonly string ServerHost = Environment.GetEnvironmentVariable("GREMLIN_SERVER_HOST") ?? "localhost";
+    static readonly int ServerPort = int.Parse(Environment.GetEnvironmentVariable("GREMLIN_SERVER_PORT") ?? "8182");
+    static readonly string VertexLabel = Environment.GetEnvironmentVariable("VERTEX_LABEL") ?? "person";
+
     static async Task Main()
     {
-        var server = new GremlinServer("localhost", 8182);
+        var server = new GremlinServer(ServerHost, ServerPort);
         using var remoteConnection = new DriverRemoteConnection(new GremlinClient(server), "g");
         var g = Traversal().WithRemote(remoteConnection);
 
         // Basic Gremlin: adding and retrieving data
-        var v1 = g.AddV("person").Property("name", "marko").Next();
-        var v2 = g.AddV("person").Property("name", "stephen").Next();
-        var v3 = g.AddV("person").Property("name", "vadas").Next();
+        var v1 = g.AddV(VertexLabel).Property("name", "marko").Next();
+        var v2 = g.AddV(VertexLabel).Property("name", "stephen").Next();
+        var v3 = g.AddV(VertexLabel).Property("name", "vadas").Next();
 
         // Be sure to use a terminating step like Next() or Iterate() so that the traversal "executes"
         // Iterate() does not return any data and is used to just generate side-effects (i.e. write data to the database)
         g.V(v1).AddE("knows").To(v2).Property("weight", 0.75).Iterate();
         g.V(v1).AddE("knows").To(v3).Property("weight", 0.75).Iterate();
 
         // Retrieve the data from the "marko" vertex
-        var marko = await g.V().Has("person", "name", "marko").Values<string>("name").Promise(t => t.Next());
+        var marko = await g.V().Has(VertexLabel, "name", "marko").Values<string>("name").Promise(t => t.Next());
         Console.WriteLine("name: " + marko);
 
         // Find the "marko" vertex and then traverse to the people he "knows" and return their data
-        var peopleMarkoKnows = await g.V().Has("person", "name", "marko").Out("knows").Values<string>("name").Promise(t => t.ToList());
+        var peopleMarkoKnows = await g.V().Has(VertexLabel, "name", "marko").Out("knows").Values<string>("name").Promise(t => t.ToList());
         foreach (var person in peopleMarkoKnows)
         {
             Console.WriteLine("marko knows " + person);

gremlin-dotnet/Examples/Connections/Connections.cs

@@ -24,6 +24,10 @@ under the License.
 
 public class ConnectionExample
 {
+    static readonly string ServerHost = Environment.GetEnvironmentVariable("GREMLIN_SERVER_HOST") ?? "localhost";
+    static readonly int ServerPort = int.Parse(Environment.GetEnvironmentVariable("GREMLIN_SERVER_PORT") ?? "8182");
+    static readonly string VertexLabel = Environment.GetEnvironmentVariable("VERTEX_LABEL") ?? "connection";
+
     static void Main()
     {
         WithRemote();
@@ -34,41 +38,38 @@ static void Main()
     // Connecting to the server
     static void WithRemote()
     {
-        var server = new GremlinServer("localhost", 8182);
+        var server = new GremlinServer(ServerHost, ServerPort);
         using var remoteConnection = new DriverRemoteConnection(new GremlinClient(server), "g");
         var g = Traversal().WithRemote(remoteConnection);
 
-        // Drop existing vertices
-        g.V().Drop().Iterate();
-
         // Simple query to verify connection
-        var v = g.AddV().Iterate();
-        var count = g.V().Count().Next();
+        var v = g.AddV(VertexLabel).Iterate();
+        var count = g.V().HasLabel(VertexLabel).Count().Next();
         Console.WriteLine("Vertex count: " + count);
     }
 
     // Connecting to the server with customized configurations
     static void WithConf()
     {
         using var remoteConnection = new DriverRemoteConnection(new GremlinClient(
-        new GremlinServer(hostname: "localhost", port: 8182, enableSsl: false, username: "", password: "")), "g");
+        new GremlinServer(hostname: ServerHost, port: ServerPort, enableSsl: false, username: "", password: "")), "g");
         var g = Traversal().WithRemote(remoteConnection);
 
-        var v = g.AddV().Iterate();
-        var count = g.V().Count().Next();
+        var v = g.AddV(VertexLabel).Iterate();
+        var count = g.V().HasLabel(VertexLabel).Count().Next();
         Console.WriteLine("Vertex count: " + count);
     }
 
     // Specifying a serializer
     static void WithSerializer()
     {
-        var server = new GremlinServer("localhost", 8182);
+        var server = new GremlinServer(ServerHost, ServerPort);
         var client = new GremlinClient(server, new GraphSON3MessageSerializer());
         using var remoteConnection = new DriverRemoteConnection(client, "g");
         var g = Traversal().WithRemote(remoteConnection);
 
-        var v = g.AddV().Iterate();
-        var count = g.V().Count().Next();
+        var v = g.AddV(VertexLabel).Iterate();
+        var count = g.V().HasLabel(VertexLabel).Count().Next();
         Console.WriteLine("Vertex count: " + count);
     }
 }

gremlin-dotnet/Examples/ModernTraversals/ModernTraversals.cs

@@ -26,10 +26,16 @@ under the License.
 
 public class ModernTraversalExample
 {
+    static readonly string ServerHost = Environment.GetEnvironmentVariable("GREMLIN_SERVER_HOST") ?? "localhost";
+    static readonly int ServerPort = int.Parse(Environment.GetEnvironmentVariable("GREMLIN_SERVER_PORT") ?? "8182");
+    static readonly bool IsDocker = Environment.GetEnvironmentVariable("DOCKER_ENVIRONMENT") == "true";
+
     static void Main()
     {
-        var server = new GremlinServer("localhost", 8182);
-        using var remoteConnection = new DriverRemoteConnection(new GremlinClient(server), "g");
+        var server = new GremlinServer(ServerHost, ServerPort);
+        // Use gmodern in CI environment, default connection locally
+        var traversalSource = IsDocker ? "gmodern" : "g";
+        using var remoteConnection = new DriverRemoteConnection(new GremlinClient(server), traversalSource);
         var g = Traversal().WithRemote(remoteConnection);
 
         /*

gremlin-dotnet/docker-compose.yml

@@ -53,10 +53,19 @@ services:
       - ../gremlin-tools/gremlin-socket-server/conf:/gremlin-dotnet/gremlin-socket-server/conf/
     environment:
       - DOCKER_ENVIRONMENT=true
+      - GREMLIN_SERVER_HOST=gremlin-server-test-dotnet
+      - GREMLIN_SERVER_PORT=45940
+      - VERTEX_LABEL=dotnet-example
     working_dir: /gremlin-dotnet
     command: >
       bash -c "dotnet tool update -g dotnet-trx; dotnet test ./Gremlin.Net.sln -c Release --logger trx; /root/.dotnet/tools/trx;
-      EXIT_CODE=$$?; chown -R `stat -c "%u:%g" .` .; exit $$EXIT_CODE"
+      EXIT_CODE=$$?;
+      echo 'Running examples...';
+      dotnet run --project Examples/BasicGremlin/BasicGremlin.csproj;
+      dotnet run --project Examples/Connections/Connections.csproj;
+      dotnet run --project Examples/ModernTraversals/ModernTraversals.csproj;
+      echo 'All examples completed successfully';
+      chown -R `stat -c \"%u:%g\" .` .; exit $$EXIT_CODE"
     depends_on:
       gremlin-server-test-dotnet:
         condition: service_healthy

gremlin-examples/gremlin-dotnet/BasicGremlin/BasicGremlin.cs

@@ -23,28 +23,32 @@ under the License.
 
 public class BasicGremlinExample
 {
+    static readonly string ServerHost = "localhost";
+    static readonly int ServerPort = 8182;
+    static readonly string VertexLabel = "person";
+
     static async Task Main()
     {
-        var server = new GremlinServer("localhost", 8182);
+        var server = new GremlinServer(ServerHost, ServerPort);
         using var remoteConnection = new DriverRemoteConnection(new GremlinClient(server), "g");
         var g = Traversal().WithRemote(remoteConnection);
 
         // Basic Gremlin: adding and retrieving data
-        var v1 = g.AddV("person").Property("name", "marko").Next();
-        var v2 = g.AddV("person").Property("name", "stephen").Next();
-        var v3 = g.AddV("person").Property("name", "vadas").Next();
+        var v1 = g.AddV(VertexLabel).Property("name", "marko").Next();
+        var v2 = g.AddV(VertexLabel).Property("name", "stephen").Next();
+        var v3 = g.AddV(VertexLabel).Property("name", "vadas").Next();
 
         // Be sure to use a terminating step like Next() or Iterate() so that the traversal "executes"
         // Iterate() does not return any data and is used to just generate side-effects (i.e. write data to the database)
         g.V(v1).AddE("knows").To(v2).Property("weight", 0.75).Iterate();
         g.V(v1).AddE("knows").To(v3).Property("weight", 0.75).Iterate();
 
         // Retrieve the data from the "marko" vertex
-        var marko = await g.V().Has("person", "name", "marko").Values<string>("name").Promise(t => t.Next());
+        var marko = await g.V().Has(VertexLabel, "name", "marko").Values<string>("name").Promise(t => t.Next());
         Console.WriteLine("name: " + marko);
 
         // Find the "marko" vertex and then traverse to the people he "knows" and return their data
-        var peopleMarkoKnows = await g.V().Has("person", "name", "marko").Out("knows").Values<string>("name").Promise(t => t.ToList());
+        var peopleMarkoKnows = await g.V().Has(VertexLabel, "name", "marko").Out("knows").Values<string>("name").Promise(t => t.ToList());
         foreach (var person in peopleMarkoKnows)
         {
             Console.WriteLine("marko knows " + person);

gremlin-examples/gremlin-dotnet/Connections/Connections.cs

@@ -24,6 +24,10 @@ under the License.
 
 public class ConnectionExample
 {
+    static readonly string ServerHost = "localhost";
+    static readonly int ServerPort = 8182;
+    static readonly string VertexLabel = "connection";
+
     static void Main()
     {
         WithRemote();
@@ -34,41 +38,38 @@ static void Main()
     // Connecting to the server
     static void WithRemote()
     {
-        var server = new GremlinServer("localhost", 8182);
+        var server = new GremlinServer(ServerHost, ServerPort);
         using var remoteConnection = new DriverRemoteConnection(new GremlinClient(server), "g");
         var g = Traversal().WithRemote(remoteConnection);
 
-        // Drop existing vertices
-        g.V().Drop().Iterate();
-
         // Simple query to verify connection
-        var v = g.AddV().Iterate();
-        var count = g.V().Count().Next();
+        var v = g.AddV(VertexLabel).Iterate();
+        var count = g.V().HasLabel(VertexLabel).Count().Next();
         Console.WriteLine("Vertex count: " + count);
     }
 
     // Connecting to the server with customized configurations
     static void WithConf()
     {
         using var remoteConnection = new DriverRemoteConnection(new GremlinClient(
-        new GremlinServer(hostname: "localhost", port: 8182, enableSsl: false, username: "", password: "")), "g");
+        new GremlinServer(hostname: ServerHost, port: ServerPort, enableSsl: false, username: "", password: "")), "g");
         var g = Traversal().WithRemote(remoteConnection);
 
-        var v = g.AddV().Iterate();
-        var count = g.V().Count().Next();
+        var v = g.AddV(VertexLabel).Iterate();
+        var count = g.V().HasLabel(VertexLabel).Count().Next();
         Console.WriteLine("Vertex count: " + count);
     }
 
     // Specifying a serializer
     static void WithSerializer()
     {
-        var server = new GremlinServer("localhost", 8182);
+        var server = new GremlinServer(ServerHost, ServerPort);
         var client = new GremlinClient(server, new GraphSON3MessageSerializer());
         using var remoteConnection = new DriverRemoteConnection(client, "g");
         var g = Traversal().WithRemote(remoteConnection);
 
-        var v = g.AddV().Iterate();
-        var count = g.V().Count().Next();
+        var v = g.AddV(VertexLabel).Iterate();
+        var count = g.V().HasLabel(VertexLabel).Count().Next();
         Console.WriteLine("Vertex count: " + count);
     }
 }

gremlin-examples/gremlin-dotnet/ModernTraversals/ModernTraversals.cs

@@ -26,9 +26,12 @@ under the License.
 
 public class ModernTraversalExample
 {
+    static readonly string ServerHost = "localhost";
+    static readonly int ServerPort = 8182;
+
     static void Main()
     {
-        var server = new GremlinServer("localhost", 8182);
+        var server = new GremlinServer(ServerHost, ServerPort);
         using var remoteConnection = new DriverRemoteConnection(new GremlinClient(server), "g");
         var g = Traversal().WithRemote(remoteConnection);