Implement SpanContext::Clone (#138)

meastman · isaachier · commit cefa941d1ee0 · 2018-11-21T17:49:59.000-05:00
This was added to the opentracing API in opentracing/opentracing-cpp#56 Signed-off-by: Matt Eastman <matt@meastman.org>
diff --git a/src/jaegertracing/SpanContext.h b/src/jaegertracing/SpanContext.h
@@ -19,6 +19,7 @@
 
 #include <iomanip>
 #include <iostream>
+#include <memory>
 #include <mutex>
 #include <string>
 #include <unordered_map>
@@ -164,6 +165,13 @@ class SpanContext : public opentracing::SpanContext {
         forEachBaggageItem(f);
     }
 
+    std::unique_ptr<opentracing::SpanContext> Clone() const noexcept
+    {
+        std::lock_guard<std::mutex> lock(_mutex);
+        return std::unique_ptr<opentracing::SpanContext>(
+            new SpanContext(*this));
+    }
+
     friend bool operator==(const SpanContext& lhs, const SpanContext& rhs)
     {
         {

Original file line number	Diff line number	Diff line change
`@@ -19,6 +19,7 @@`
`19`	`19`
`20`	`20`	`#include <iomanip>`
`21`	`21`	`#include <iostream>`
	`22`	`+#include <memory>`
`22`	`23`	`#include <mutex>`
`23`	`24`	`#include <string>`
`24`	`25`	`#include <unordered_map>`
`@@ -164,6 +165,13 @@ class SpanContext : public opentracing::SpanContext {`
`164`	`165`	`forEachBaggageItem(f);`
`165`	`166`	`}`
`166`	`167`
	`168`	`+ std::unique_ptr<opentracing::SpanContext> Clone() const noexcept`
	`169`	`+ {`
	`170`	`+ std::lock_guard<std::mutex> lock(_mutex);`
	`171`	`+ return std::unique_ptr<opentracing::SpanContext>(`
	`172`	`+ new SpanContext(*this));`
	`173`	`+ }`
	`174`	`+`
`167`	`175`	`friend bool operator==(const SpanContext& lhs, const SpanContext& rhs)`
`168`	`176`	`{`
`169`	`177`	`{`