update source to Ceph Pacific 16.2.2

[ceph.git] / ceph / src / jaegertracing / jaeger-client-cpp / src / jaegertracing / TraceID.cpp

diff --git a/ceph/src/jaegertracing/jaeger-client-cpp/src/jaegertracing/TraceID.cpp b/ceph/src/jaegertracing/jaeger-client-cpp/src/jaegertracing/TraceID.cpp
new file mode 100644 (file)
index 0000000..59a5ceb
--- /dev/null
+++ b/ceph/src/jaegertracing/jaeger-client-cpp/src/jaegertracing/TraceID.cpp
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2017 Uber Technologies, Inc.
+ *
+ * Licensed 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.
+ */
+
+#include "jaegertracing/TraceID.h"
+#include "jaegertracing/utils/HexParsing.h"
+#include <iterator>
+#include <stddef.h>
+#include <string>
+
+namespace jaegertracing {
+
+TraceID TraceID::fromStream(std::istream& in)
+{
+    TraceID traceID;
+    constexpr auto kMaxChars = static_cast<size_t>(32);
+    auto buffer = utils::HexParsing::readSegment(in, kMaxChars, ':');
+
+    if (buffer.empty()) {
+        return TraceID();
+    }
+
+    if (buffer.size() < kMaxChars / 2) {
+        traceID._low = utils::HexParsing::decodeHex<uint64_t>(buffer);
+    }
+    else {
+        auto beginLowStr = std::end(buffer) - kMaxChars / 2;
+        const std::string highStr(std::begin(buffer), beginLowStr);
+        traceID._high = utils::HexParsing::decodeHex<uint64_t>(highStr);
+        const std::string lowStr(beginLowStr, std::end(buffer));
+        traceID._low = utils::HexParsing::decodeHex<uint64_t>(lowStr);
+    }
+
+    return traceID;
+}
+
+}  // namespace jaegertracing