Add ListenerManager

src/SkyWalking.Abstractions/Context/ITracingContextListener.cs

@@ -16,13 +16,12 @@
  *
  */
 
-using System;
-using System.Collections.Generic;
-using System.Text;
+using SkyWalking.Context.Trace;
 
 namespace SkyWalking.Context
 {
-    interface ITracingContextListener
+   public interface ITracingContextListener
     {
+        void AfterFinished(ITraceSegment traceSegment);
     }
 }

src/SkyWalking.Core/Context/ListenerManager.cs

+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+using System.Collections.Generic;
+using System.Runtime.CompilerServices;
+using SkyWalking.Context.Trace;
+
+namespace SkyWalking.Context
+{
+    public static class ListenerManager
+    {
+        private static readonly IList<ITracingContextListener> _listeners = new List<ITracingContextListener>();
+
+
+        [MethodImpl(MethodImplOptions.Synchronized)]
+        public static void Add(ITracingContextListener listener)
+        {
+            _listeners.Add(listener);
+        }
+
+        [MethodImpl(MethodImplOptions.Synchronized)]
+        public static void Remove(ITracingContextListener listener)
+        {
+            _listeners.Remove(listener);
+        }
+
+        public static void NotifyFinish(ITraceSegment traceSegment)
+        {
+            foreach (var listener in _listeners)
+            {
+                listener.AfterFinished(traceSegment);
+            }
+        }
+    }
+}
\ No newline at end of file

src/SkyWalking.Core/Context/TracingContext.cs

@@ -16,16 +16,28 @@
  *
  */
 
+using System.Collections;
+using System.Collections.Generic;
 using SkyWalking.Context.Trace;
+using SkyWalking.Sampling;
 
 namespace SkyWalking.Context
 {
     public class TracingContext: ITracerContext
     {
         private long _lastWarningTimestamp = 0;
-        
-        
-        
+        private ISampler _sampler;
+        private ITraceSegment _segment;
+        private Stack<ISpan> _activeSpanStacks;
+        private int _spanIdGenerator;
+
+        public TracingContext()
+        {
+            _sampler = new SamplingService();
+            _segment = new TraceSegment();
+            _activeSpanStacks = new Stack<ISpan>();
+        }
+
         public void Inject(IContextCarrier carrier)
         {
             throw new System.NotImplementedException();

src/SkyWalking.Core/Sampling/SamplingService.cs

-using System.Threading.Tasks;
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+using System.Threading.Tasks;
 
 namespace SkyWalking.Sampling
 {

src/SkyWalking.Core/Utils/StackExtensions.cs

+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+using System.Collections.Generic;
+
+namespace SkyWalking.Utils
+{
+    public static class StackExtensions
+    {
+        public static bool TryPeek<T>(this Stack<T> stack, out T value)
+        {
+            if (stack == null || stack.Count == 0)
+            {
+                value = default(T);
+                return false;
+            }
+
+            value = stack.Peek();
+            return true;
+        }
+
+        public static bool TryPop<T>(this Stack<T> stack, out T value)
+        {
+            if (stack == null || stack.Count == 0)
+            {
+                value = default(T);
+                return false;
+            }
+
+            value = stack.Pop();
+            return true;
+        }
+    }
+}
\ No newline at end of file