message.cpp

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/*
 * message.cpp
 *
 * Copyright (C) 2007  Thomas A. Vaughan
 * All rights reserved.
 *
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the <organization> nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THOMAS A. VAUGHAN ''AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THOMAS A. VAUGHAN BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *
 * Payload construction routines.  See message.h
 */

// includes --------------------------------------------------------------------
#include "message.h"            // always include our own header first!

#include "datahash/datahash_util.h"
#include "datahash/datahash_text.h"
#include "perf/perf.h"


namespace aesop {


//
//      public API
//

void
getTcpPayload
(
IN const char * data,
OUT tcp_payload_t& payload
)
{
        perf::Timer timer("aesop::getTcpPayload");
        ASSERT(data, "null");
        payload.clear();

        // TODO: is this efficient?
        std::istringstream iss(data);

        // get master hash
        smart_ptr<Datahash> master = readHashFromStream("datagram", iss);
        ASSERT(master, "null hash after deserialization?");
//      dumpHash("deserialized message", master);

        // parse header fields
        smart_ptr<Datahash> header = getSubhash(master, "header");
        ASSERT(header, "null subhash");

        payload.namespace_ = getString(header, "namespace");
        payload.command = getString(header, "command");

        // get arguments (data)
        payload.arguments = getSubhash(master, "data");
        ASSERT(payload.arguments, "null data hash");
}



};      // aesop namespace