解决跨域levelId的问题

skywalking-api/src/main/java/com/ai/cloud/skywalking/api/Tracing.java

@@ -2,22 +2,37 @@ package com.ai.cloud.skywalking.api;
 
 import com.ai.cloud.skywalking.conf.AuthDesc;
 import com.ai.cloud.skywalking.context.Context;
+import com.ai.cloud.skywalking.model.ContextData;
 import com.ai.cloud.skywalking.protocol.Span;
 
 public class Tracing {
-	/**
-	 * 获取当前上下文中的TraceId
-	 * @return
-	 */
-	public static String getTraceId(){
-		if (!AuthDesc.isAuth())
+    /**
+     * 获取当前上下文中的TraceId
+     *
+     * @return
+     */
+    public static String getTraceId() {
+        if (!AuthDesc.isAuth())
             return "";
 
         Span spanData = Context.getLastSpan();
         if (spanData == null) {
             return "";
         }
-        
+
         return spanData.getTraceId();
-	}
+    }
+
+   public static String generateNextContextData(){
+       if (!AuthDesc.isAuth())
+           return null;
+
+       Span spanData = Context.getLastSpan();
+       if (spanData == null) {
+           return null;
+       }
+
+       ContextData contextData = new ContextData(spanData);
+       return contextData.toString();
+   }
 }

skywalking-api/src/main/java/com/ai/cloud/skywalking/context/Context.java

@@ -66,11 +66,11 @@ public class Context {
 
     static class SpanNode {
         private Span data;
+        //
         private int nextSubSpanLevelId = 0;
 
         public SpanNode(Span data) {
             this.data = data;
-            this.data.setLevelId(nextSubSpanLevelId);
         }
 
         public SpanNode(Span data, int levelId) {

skywalking-api/src/main/java/com/ai/cloud/skywalking/model/ContextData.java

@@ -6,7 +6,7 @@ import com.ai.cloud.skywalking.protocol.Span;
 public class ContextData {
     private String traceId;
     private String parentLevel;
-    private long levelId;
+    private int levelId;
     private char spanType;
 
     ContextData() {
@@ -19,14 +19,15 @@ public class ContextData {
         this.levelId = span.getLevelId();
         this.spanType = span.getSpanType();
     }
-    
-    public ContextData(String contextDataStr){
-    	// 反序列化参数
+
+    public ContextData(String contextDataStr) {
+        // 反序列化参数
         String[] value = contextDataStr.split("-");
-        Span span = new Span(value[0]);
-        span.setParentLevel(value[1]);
-        span.setLevelId(Integer.valueOf(value[2]));
-        span.setSpanType(value[3].charAt(0));
+        this.traceId = value[0];
+        this.parentLevel = value[1];
+        this.levelId = Integer.valueOf(value[2]);
+        this.spanType = value[3].charAt(0);
+
     }
 
     public String getTraceId() {
@@ -37,7 +38,7 @@ public class ContextData {
         return parentLevel;
     }
 
-    public long getLevelId() {
+    public int getLevelId() {
         return levelId;
     }
 

skywalking-api/src/main/java/com/ai/cloud/skywalking/util/ContextGenerator.java

@@ -34,10 +34,9 @@ public final class ContextGenerator {
             spanData = new Span(TraceIdGenerator.generate(), Config.SkyWalking.APPLICATION_ID);
         } else {
             // 如果不为空，则将当前的Context存放到上下文
-            // LevelId是由SpanNode类的nextSubSpanLevelId字段进行初始化的.
-            // 所以在这里不需要初始化
             spanData = new Span(context.getTraceId(), Config.SkyWalking.APPLICATION_ID);
             spanData.setParentLevel(context.getParentLevel());
+            spanData.setLevelId(context.getLevelId());
         }
         initNewSpanData(spanData, id);