From 65e56dc7d56154c4f8af05d885599af71fc35cca Mon Sep 17 00:00:00 2001
From: Benoit Foucher <benoit@zeroc.com>
Date: Mon, 23 Jul 2012 09:00:50 +0200
Subject: Initial metrics

---
 cpp/src/Ice/MetricsObserverI.cpp | 188 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 188 insertions(+)
 create mode 100644 cpp/src/Ice/MetricsObserverI.cpp

(limited to 'cpp/src/Ice/MetricsObserverI.cpp')

diff --git a/cpp/src/Ice/MetricsObserverI.cpp b/cpp/src/Ice/MetricsObserverI.cpp
new file mode 100644
index 00000000000..c3e51b170ba
--- /dev/null
+++ b/cpp/src/Ice/MetricsObserverI.cpp
@@ -0,0 +1,188 @@
+// **********************************************************************
+//
+// Copyright (c) 2003-2012 ZeroC, Inc. All rights reserved.
+//
+// This copy of Ice is licensed to you under the terms described in the
+// ICE_LICENSE file included in this distribution.
+//
+// **********************************************************************
+
+#include <Ice/MetricsObserverI.h>
+#include <Ice/MetricsAdminI.h>
+
+using namespace std;
+using namespace Ice;
+using namespace IceMetrics;
+
+namespace 
+{
+
+class ConnectionMetricsHelper : public MetricsHelper
+{
+public:
+    
+    ConnectionMetricsHelper(const ConnectionPtr& con) : _connection(con)
+    {
+    }
+
+    virtual string operator()(const string& attribute) const
+    {
+        return ""; // TODO: return attribute value
+    }
+    
+    virtual MetricsObjectPtr newMetricsObject() const
+    {
+        return new ConnectionMetricsObject();
+    }
+        
+private:
+    
+    Ice::ConnectionPtr _connection;
+};
+
+}
+
+void
+ConnectionObserverI::attach()
+{
+    struct Attach 
+    {
+        void operator()(const ConnectionMetricsObjectPtr& v)
+        {
+            ++v->total;
+            ++v->current;
+            ++v->initializing;
+        }
+    };
+    forEach(Attach());
+}
+
+void
+ConnectionObserverI::detach()
+{
+    struct Detach 
+    {
+        void operator()(const ConnectionMetricsObjectPtr& v)
+        {
+            ++v->total;
+            ++v->current;
+            ++v->initializing;
+        }
+    };
+    forEach(Detach());
+}
+
+void
+ConnectionObserverI::stateChanged(ConnectionState oldState, ConnectionState newState)
+{
+    struct StateChanged 
+    {
+        StateChanged(ConnectionState oldState, ConnectionState newState) : 
+            oldState(oldState), newState(newState)
+        {
+        }
+
+        void operator()(const ConnectionMetricsObjectPtr& v)
+        {
+            --(v.get()->*getConnectionStateMetric(oldState));
+            ++(v.get()->*getConnectionStateMetric(newState));
+        }
+
+        int ConnectionMetricsObject::*
+        getConnectionStateMetric(ConnectionState s)
+        {
+            switch(s)
+            {
+            case ConnectionStateInitializing:
+                return &ConnectionMetricsObject::initializing;
+            case ConnectionStateActive:
+                return &ConnectionMetricsObject::active;
+            case ConnectionStateHolding:
+                return &ConnectionMetricsObject::holding;
+            case ConnectionStateClosing:
+                return &ConnectionMetricsObject::closing;
+            case ConnectionStateClosed:
+                return &ConnectionMetricsObject::closed;
+            }
+        }    
+
+        ConnectionState oldState;
+        ConnectionState newState;
+    }
+    forEach(StateChanged(oldState, newState));
+}
+
+void 
+ConnectionObserverI::sentBytes(Int num, Long duration)
+{
+    forEach(aggregate(applyOnMember(&ConnectionMetricsObject::sentBytes, Add<Int>(num)),
+                      applyOnMember(&ConnectionMetricsObject::sentTime, Add<Long>(duration))));
+}
+
+void 
+ConnectionObserverI::receivedBytes(Int num, Long duration)
+{
+    forEach(aggregate(applyOnMember(&ConnectionMetricsObject::receivedBytes, Add<Int>(num)),
+                      applyOnMember(&ConnectionMetricsObject::receivedTime, Add<Long>(duration))));
+}
+
+ObserverResolverI::ObserverResolverI(const MetricsAdminIPtr& metrics) : _metrics(metrics)
+{
+}
+
+void
+ObserverResolverI::setObserverUpdater(const ObserverUpdaterPtr& updater)
+{
+    class Updater : public ObjectObserverUpdater
+    {
+    public:
+
+        Updater(const ObserverUpdaterPtr& updater, void (ObserverUpdater::*fn)()) : 
+            _updater(updater), _fn(fn)
+        {
+        }
+        
+        virtual void update()
+        {
+            (_updater.get()->*_fn)();
+        }
+
+    private: 
+
+        const ObserverUpdaterPtr _updater;
+        void (ObserverUpdater::*_fn)();
+    };
+    _metrics->addUpdater("Connection", new Updater(updater, &ObserverUpdater::updateConnectionObservers));
+    _metrics->addUpdater("Thread", new Updater(updater, &ObserverUpdater::updateThreadObservers));
+    _metrics->addUpdater("ThreadPoolThread", new Updater(updater, &ObserverUpdater::updateThreadPoolThreadObservers));
+}
+
+ConnectionObserverPtr 
+ObserverResolverI::getConnectionObserver(const ConnectionObserverPtr& old, const ConnectionPtr& con)
+{
+    return _connections.getObserver(_metrics->getMatching("Connection", ConnectionMetricsHelper(con)), old.get());
+}
+
+ObjectObserverPtr 
+ObserverResolverI::getThreadObserver(const ObjectObserverPtr&, const string&, const string&)
+{
+    return 0;
+}
+
+ThreadPoolThreadObserverPtr 
+ObserverResolverI::getThreadPoolThreadObserver(const ThreadPoolThreadObserverPtr&, const string&, const string&)
+{
+    return 0;
+}
+
+RequestObserverPtr 
+ObserverResolverI::getInvocationObserver(const RequestObserverPtr&, const ObjectPrx&, const string&)
+{
+    return 0;
+}
+
+RequestObserverPtr 
+ObserverResolverI::getDispatchObserver(const RequestObserverPtr&, const ObjectPtr&, const Current&)
+{
+    return 0;
+}
-- 
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