genesis-3d_engine/Engine/foundation/http/httpclientregistry.cc

/****************************************************************************
Copyright (c) 2009, Radon Labs GmbH
Copyright (c) 2011-2013,WebJet Business Division,CYOU
 
http://www.genesis-3d.com.cn

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/

#if (__WIN32__||__APPLE__)


#include "stdneb.h"

// HttpClientRegistry not implemented on the Wii
#if __NEBULA3_HTTP_FILESYSTEM__
#include "http/httpclientregistry.h"

namespace Http
{
__ImplementClass(Http::HttpClientRegistry, 'HTCR', Core::RefCounted);
__ImplementThreadSingleton(Http::HttpClientRegistry);

using namespace IO;
using namespace Util;

//------------------------------------------------------------------------------
/**
*/
HttpClientRegistry::HttpClientRegistry() :
    isValid(false)
{
    __ConstructThreadSingleton;
}

//------------------------------------------------------------------------------
/**
*/
HttpClientRegistry::~HttpClientRegistry()
{
    if (this->IsValid())
    {
        this->Discard();
    }
    __DestructThreadSingleton;
}

//------------------------------------------------------------------------------
/**
*/
void
HttpClientRegistry::Setup()
{
    n_assert(!this->isValid);
    this->isValid = true;
}

//------------------------------------------------------------------------------
/**
*/
void
HttpClientRegistry::Discard()
{
    n_assert(this->IsValid());

    // force disconnect on all open connections
    IndexT i;
    for (i = 0; i < this->connections.Size(); i++)
    {
        this->connections.ValueAtIndex(i).httpClient->Disconnect();
    }
    this->connections.Clear();

    this->isValid = false;
}

//------------------------------------------------------------------------------
/**
    This disconnects all connections with a use count of 0.
*/
void
HttpClientRegistry::DisconnectIdle()
{
    // start at the back of the array since we're removing elements
    IndexT i;
    for (i = this->connections.Size() - 1; i >= 0; i--)
    {
        const Connection& con = this->connections.ValueAtIndex(i);
        if (0 == con.useCount)
        {
            if (con.httpClient->IsConnected())
            {
                con.httpClient->Disconnect();
            }
            this->connections.EraseAtIndex(i);
        }
    }
}

//------------------------------------------------------------------------------
/**
*/
GPtr<HttpClient>
HttpClientRegistry::ObtainConnection(const URI& uri)
{
    StringAtom host = uri.Host();
    if (this->connections.Contains(host))
    {
        // connection already exists, increment connection count
        Connection& con = this->connections[host];
        con.useCount++;

        // reconnect if the connection has been dropped for some reason
        if (!con.httpClient->IsConnected())
        {
            con.httpClient->Connect(uri);
        }
        return con.httpClient;
    }
    else
    {
        // connection doesn't exist yet, create a new Http client and
        // add to connections
        Connection newCon;
        newCon.useCount = 1;
        newCon.httpClient = HttpClient::Create();
        newCon.httpClient->Connect(uri);
        this->connections.Add(host, newCon);
        return newCon.httpClient;
    }
}

//------------------------------------------------------------------------------
/**
*/
void
HttpClientRegistry::ReleaseConnection(const URI& uri)
{
    StringAtom host = uri.Host();
    IndexT index = this->connections.FindIndex(host);
    if (InvalidIndex != index)
    {
        Connection& con = this->connections.ValueAtIndex(index);
        n_assert(con.useCount > 0);
        con.useCount--;
    }
}

//------------------------------------------------------------------------------
/**
*/
bool
HttpClientRegistry::IsConnected(const URI& uri) const
{
    StringAtom host = uri.Host();
    if (this->connections.Contains(host))
    {
        return this->connections[host].httpClient->IsConnected();
    }
    else
    {
        return false;
    }
}

} // namespace Http
#endif //__WII__

#endif