Add peer count to HTTP server properties

src/ripple/http/impl/Peer.cpp

@@ -23,6 +23,14 @@
 namespace ripple {
 namespace HTTP {
 
+std::atomic <std::size_t> Peer::s_count_;
+
+std::size_t
+Peer::count()
+{
+    return s_count_.load();
+}
+
 Peer::Peer (ServerImpl& server, Port const& port, beast::Journal journal)
     : journal_ (journal)
     , server_ (server)
@@ -37,6 +45,8 @@ Peer::Peer (ServerImpl& server, Port const& port, beast::Journal journal)
     , bytes_in_ (0)
     , bytes_out_ (0)
 {
+    ++s_count_;
+
     static std::atomic <int> sid;
     id_ = std::string("#") + std::to_string(sid++);
 
@@ -92,6 +102,8 @@ Peer::~Peer ()
 
     if (journal_.trace) journal_.trace <<
         id_ << " destroyed";
+
+    --s_count_;
 }
 
 //------------------------------------------------------------------------------

src/ripple/http/impl/Peer.h

@@ -33,6 +33,7 @@
 #include <beast/module/asio/http/HTTPRequestParser.h>
 #include <boost/asio/ip/tcp.hpp>
 #include <boost/asio/streambuf.hpp>
+#include <atomic>
 #include <chrono>
 #include <functional>
 #include <memory>
@@ -97,7 +98,13 @@ private:
 
     //--------------------------------------------------------------------------
 
+    static std::atomic <std::size_t> s_count_;
+
 public:
+    static
+    std::size_t
+    count();
+
     Peer (ServerImpl& impl, Port const& port, beast::Journal journal);
     ~Peer ();
 

src/ripple/http/impl/ServerImpl.cpp

@@ -153,6 +153,8 @@ ServerImpl::onWrite (beast::PropertyStream::Map& map)
 
     // VFALCO TODO Write the list of doors
 
+    map ["peers"] = Peer::count();
+
     {
         beast::PropertyStream::Set set ("sessions", map);
         for (auto const& stat : stats_)