update source to Ceph Pacific 16.2.2

[ceph.git] / ceph / src / jaegertracing / jaeger-client-cpp / src / jaegertracing / platform / Hostname.h

diff --git a/ceph/src/jaegertracing/jaeger-client-cpp/src/jaegertracing/platform/Hostname.h b/ceph/src/jaegertracing/jaeger-client-cpp/src/jaegertracing/platform/Hostname.h
new file mode 100644 (file)
index 0000000..d5c7177
--- /dev/null
+++ b/ceph/src/jaegertracing/jaeger-client-cpp/src/jaegertracing/platform/Hostname.h
@@ -0,0 +1,58 @@
+/*
+ * 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.
+ */
+
+#ifndef JAEGERTRACING_PLATFORM_HOSTNAME_H
+#define JAEGERTRACING_PLATFORM_HOSTNAME_H
+
+#include <errno.h>
+#include <string>
+#include <system_error>
+
+#ifdef WIN32
+#include <Winsock2.h>
+#else
+#include <unistd.h>
+#endif
+
+#ifdef _MSC_VER
+#pragma warning(push)
+#pragma warning(disable : 4267)
+#endif
+
+namespace jaegertracing {
+namespace platform {
+
+inline std::string hostname()
+{
+    constexpr auto kBufferSize = 256;
+    std::string buffer(kBufferSize, '\0');
+    const auto returnCode = ::gethostname(&buffer[0], buffer.size());
+    if (returnCode != 0) {
+        throw std::system_error(
+            errno, std::system_category(), "Failed to get hostname");
+    }
+    const auto nullPos = buffer.find('\0');
+    return buffer.substr(0, nullPos);
+}
+
+}  // namespace platform
+}  // namespace jaegertracing
+
+#ifdef _MSC_VER
+#pragma warning(pop)
+#endif
+
+#endif  // JAEGERTRACING_PLATFORM_HOSTNAME_H