Refactor ContextSnapshot

6a8f3a15 · Liuhaoyang · 8066c093 · 6a8f3a15
Commit 6a8f3a15 authored Apr 07, 2018 by Liuhaoyang
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ContextSnapshot.cs src/SkyWalking.Core/Context/ContextSnapshot.cs +2 -2

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--- a/src/SkyWalking.Core/Context/ContextSnapshot.cs
+++ b/src/SkyWalking.Core/Context/ContextSnapshot.cs
@@ -38,10 +38,10 @@ namespace SkyWalking.Context
        private string _entryOperationName;
        private string _parentOperationName;
-        private DistributedTraceId _primaryDistributedTraceId;
+        private readonly DistributedTraceId _primaryDistributedTraceId;
        private int _entryApplicationInstanceId = DictionaryUtil.NullValue;
-        public ContextSnapshot(ID traceSegmentId, int spanId, List<DistributedTraceId> distributedTraceIds)
+        public ContextSnapshot(ID traceSegmentId, int spanId, IEnumerable<DistributedTraceId> distributedTraceIds)
        {
            _traceSegmentId = traceSegmentId;
            _spanId = spanId;