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/*
This file is part of GNUnet.
Copyright (C) 2011-2016 GNUnet e.V.
GNUnet is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published
by the Free Software Foundation, either version 3 of the License,
or (at your option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Affero General Public License for more details.
*/
/**
* @file ats/gnunet-service-ats_scheduling.c
* @brief ats service, interaction with 'scheduling' API
* @author Matthias Wachs
* @author Christian Grothoff
*/
#include "platform.h"
#include "gnunet-service-ats_addresses.h"
#include "gnunet-service-ats_scheduling.h"
#include "ats.h"
/**
* Actual handle to the client.
*/
static struct GNUNET_SERVICE_Client *my_client;
/**
* Register a new scheduling client.
*
* @param client handle of the new client
* @return #GNUNET_OK on success, #GNUNET_SYSERR on error
*/
int
GAS_scheduling_add_client (struct GNUNET_SERVICE_Client *client)
{
if (NULL != my_client)
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"This ATS already has a scheduling client, refusing new scheduling client for now.\n");
return GNUNET_SYSERR;
}
my_client = client;
return GNUNET_OK;
}
/**
* Unregister a client (which may have been a scheduling client,
* but this is not assured).
*
* @param client handle of the (now dead) client
*/
void
GAS_scheduling_remove_client (struct GNUNET_SERVICE_Client *client)
{
if (my_client != client)
return;
GAS_addresses_destroy_all ();
my_client = NULL;
}
/**
* Transmit the given address suggestion and bandwidth update to all scheduling
* clients.
*
* @param peer peer for which this is an address suggestion
* @param session_id session ID to use for the given client
* @param bandwidth_out assigned outbound bandwidth
* @param bandwidth_in assigned inbound bandwidth
*/
void
GAS_scheduling_transmit_address_suggestion (const struct GNUNET_PeerIdentity *peer,
uint32_t session_id,
struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out,
struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in)
{
struct GNUNET_MQ_Envelope *env;
struct AddressSuggestionMessage *msg;
if (NULL == my_client)
return;
GNUNET_STATISTICS_update (GSA_stats,
"# address suggestions made",
1,
GNUNET_NO);
env = GNUNET_MQ_msg (msg,
GNUNET_MESSAGE_TYPE_ATS_ADDRESS_SUGGESTION);
msg->peer = *peer;
msg->session_id = htonl (session_id);
msg->bandwidth_out = bandwidth_out;
msg->bandwidth_in = bandwidth_in;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"ATS sends quota for peer `%s': (in/out) %u/%u\n",
GNUNET_i2s (peer),
(unsigned int) ntohl (bandwidth_in.value__),
(unsigned int) ntohl (bandwidth_out.value__));
GNUNET_MQ_send (GNUNET_SERVICE_client_get_mq (my_client),
env);
}
/**
* Handle 'address add' messages from clients.
*
* @param m the request message
*/
void
GAS_handle_address_add (const struct AddressAddMessage *m)
{
const char *address;
const char *plugin_name;
uint16_t address_length;
uint16_t plugin_name_length;
struct GNUNET_ATS_Properties prop;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Received `%s' message\n",
"ADDRESS_ADD");
address_length = ntohs (m->address_length);
plugin_name_length = ntohs (m->plugin_name_length);
address = (const char *) &m[1];
if (plugin_name_length != 0)
plugin_name = &address[address_length];
else
plugin_name = "";
GNUNET_STATISTICS_update (GSA_stats,
"# addresses created",
1,
GNUNET_NO);
GNUNET_ATS_properties_ntoh (&prop,
&m->properties);
GNUNET_break (GNUNET_ATS_NET_UNSPECIFIED != prop.scope);
GAS_addresses_add (&m->peer,
plugin_name,
address,
address_length,
ntohl (m->address_local_info),
ntohl (m->session_id),
&prop);
}
/**
* Handle 'address update' messages from clients.
*
* @param m the request message
*/
void
GAS_handle_address_update (const struct AddressUpdateMessage *m)
{
struct GNUNET_ATS_Properties prop;
GNUNET_STATISTICS_update (GSA_stats,
"# address updates received",
1,
GNUNET_NO);
GNUNET_ATS_properties_ntoh (&prop,
&m->properties);
GAS_addresses_update (&m->peer,
ntohl (m->session_id),
&prop);
}
/**
* Handle 'address destroyed' messages from clients.
*
* @param m the request message
*/
void
GAS_handle_address_destroyed (const struct AddressDestroyedMessage *m)
{
struct GNUNET_MQ_Envelope *env;
struct GNUNET_ATS_SessionReleaseMessage *srm;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Received `%s' message\n",
"ADDRESS_DESTROYED");
GNUNET_STATISTICS_update (GSA_stats,
"# addresses destroyed",
1,
GNUNET_NO);
GAS_addresses_destroy (&m->peer,
ntohl (m->session_id));
env = GNUNET_MQ_msg (srm,
GNUNET_MESSAGE_TYPE_ATS_SESSION_RELEASE);
srm->session_id = m->session_id;
srm->peer = m->peer;
GNUNET_MQ_send (GNUNET_SERVICE_client_get_mq (my_client),
env);
}
/* end of gnunet-service-ats_scheduling.c */
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