/*
- This file is part of GNUnet.
- (C) 2011 Christian Grothoff (and other contributing authors)
-
- 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, 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
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
-*/
+ This file is part of GNUnet.
+ (C) 2011 Christian Grothoff (and other contributing authors)
+
+ 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, 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
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GNUnet; see the file COPYING. If not, write to the
+ Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.
+ */
/**
* @file ats/gnunet-service-ats-solver_ril.c
#include "gnunet_statistics_service.h"
#define RIL_DEFAULT_STEP_TIME GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS, 3000)
+#define RIL_DEFAULT_ALGORITHM RIL_ALGO_Q
#define RIL_DEFAULT_DISCOUNT_FACTOR 0.5
#define RIL_DEFAULT_GRADIENT_STEP_SIZE 0.4
#define RIL_DEFAULT_TRACE_DECAY 0.6
* General description
*/
-enum RIL_Action
+enum RIL_Action_Type
{
- RIL_BW_DBL = 0,
- RIL_BW_HLV = 1,
- RIL_NUM_ACTIONS = 2
+ RIL_ACTION_NOTHING = 0,
+ RIL_ACTION_BW_IN_DBL = 1,
+ RIL_ACTION_BW_IN_HLV = 2,
+ RIL_ACTION_BW_IN_INC = 3,
+ RIL_ACTION_BW_IN_DEC = 4,
+ RIL_ACTION_BW_OUT_DBL = 5,
+ RIL_ACTION_BW_OUT_HLV = 6,
+ RIL_ACTION_BW_OUT_INC = 7,
+ RIL_ACTION_BW_OUT_DEC = 8,
+ RIL_ACTION_TYPE_NUM = 9
};
-//TODO add the rest of the actions
+//TODO! add the rest of the actions
enum RIL_Algorithm
{
- RIL_ALGO_SARSA,
- RIL_ALGO_Q
+ RIL_ALGO_SARSA = 0, RIL_ALGO_Q = 1
};
enum RIL_E_Modification
{
- RIL_E_SET,
- RIL_E_ZERO,
- RIL_E_ACCUMULATE,
- RIL_E_REPLACE
+ RIL_E_SET, RIL_E_ZERO, RIL_E_ACCUMULATE, RIL_E_REPLACE
};
/**
*/
struct RIL_Learning_Parameters
{
- /**
- * The TD-algorithm to use
- */
- enum RIL_Algorithm algorithm;
-
- /**
- * Learning discount factor in the TD-update
- */
- float gamma;
-
- /**
- * Gradient-descent step-size
- */
- float alpha;
-
- /**
- * Trace-decay factor for eligibility traces
- */
- float lambda;
+ /**
+ * The TD-algorithm to use
+ */
+ enum RIL_Algorithm algorithm;
+
+ /**
+ * Learning discount factor in the TD-update
+ */
+ float gamma;
+
+ /**
+ * Gradient-descent step-size
+ */
+ float alpha;
+
+ /**
+ * Trace-decay factor for eligibility traces
+ */
+ float lambda;
};
struct RIL_Peer_Agent
{
- /**
- * Next agent in solver's linked list
- */
- struct RIL_Peer_Agent *next;
-
- /**
- * Previous agent in solver's linked list
- */
- struct RIL_Peer_Agent *prev;
-
- /**
- * Environment handle
- */
- struct GAS_RIL_Handle *envi;
-
- /**
- * Peer ID
- */
- struct GNUNET_PeerIdentity peer;
-
- /**
- * Whether the agent is active or not
- */
- int active;
-
- /**
- * Number of performed time-steps
- */
- unsigned long long step_count;
-
- /**
- * Experience matrix W
- */
- double ** W;
-
- /**
- * Number of rows of W / Number of state-vector features
- */
- int m;
-
- /**
- * Number of columns of W / Number of actions
- */
- int n;
-
- /**
- * Last perceived state feature vector
- */
- double * s_old;
-
- /**
- * Last chosen action
- */
- int a_old;
-
- /**
- * Eligibility trace vector
- */
- double * e;
-
- /**
- * Address in use
- */
- struct ATS_Address * address;
+ /**
+ * Next agent in solver's linked list
+ */
+ struct RIL_Peer_Agent *next;
+
+ /**
+ * Previous agent in solver's linked list
+ */
+ struct RIL_Peer_Agent *prev;
+
+ /**
+ * Environment handle
+ */
+ struct GAS_RIL_Handle *envi;
+
+ /**
+ * Peer ID
+ */
+ struct GNUNET_PeerIdentity peer;
+
+ /**
+ * Whether the agent is active or not
+ */
+ int active;
+
+ /**
+ * Number of performed time-steps
+ */
+ unsigned long long step_count;
+
+ /**
+ * Experience matrix W
+ */
+ double ** W;
+
+ /**
+ * Number of rows of W / Number of state-vector features
+ */
+ int m;
+
+ /**
+ * Number of columns of W / Number of actions
+ */
+ int n;
+
+ /**
+ * Last perceived state feature vector
+ */
+ double * s_old;
+
+ /**
+ * Last chosen action
+ */
+ int a_old;
+
+ /**
+ * Eligibility trace vector
+ */
+ double * e;
+
+ /**
+ * Address in use
+ */
+ struct ATS_Address * address;
+
+ /**
+ * Inbound bandwidth assigned by the agent
+ */
+ unsigned long long bw_in;
+
+ /**
+ * Outbound bandwidth assigned by the agent
+ */
+ unsigned long long bw_out;
};
struct RIL_Network
{
- /**
- * ATS network type
- */
- unsigned int type;
-
- /**
- * Network description
- */
- char *desc;
-
- /**
- * Total available inbound bandwidth
- */
- unsigned long long bw_in_available;
-
- /**
- * Total assigned outbound bandwidth
- */
- unsigned long long bw_in_assigned;
-
- /**
- * Total available outbound bandwidth
- */
- unsigned long long bw_out_available;
-
- /**
- * Total assigned outbound bandwidth
- */
- unsigned long long bw_out_assigned;
+ /**
+ * ATS network type
+ */
+ enum GNUNET_ATS_Network_Type type;
+
+ /**
+ * Total available inbound bandwidth
+ */
+ unsigned long long bw_in_available;
+
+ /**
+ * Total assigned outbound bandwidth
+ */
+ unsigned long long bw_in_assigned;
+
+ /**
+ * Total available outbound bandwidth
+ */
+ unsigned long long bw_out_available;
+
+ /**
+ * Total assigned outbound bandwidth
+ */
+ unsigned long long bw_out_assigned;
};
struct RIL_Callbacks
{
- /**
- * Bandwidth changed callback
- */
- GAS_bandwidth_changed_cb bw_changed;
-
- /**
- * Bandwidth changed callback cls
- */
- void *bw_changed_cls;
-
- /**
- * ATS function to get preferences
- */
- GAS_get_preferences get_preferences;
-
- /**
- * Closure for ATS function to get preferences
- */
- void *get_preferences_cls;
-
- /**
- * ATS function to get properties
- */
- GAS_get_properties get_properties;
-
- /**
- * Closure for ATS function to get properties
- */
- void *get_properties_cls;
+ /**
+ * Bandwidth changed callback
+ */
+ GAS_bandwidth_changed_cb bw_changed;
+
+ /**
+ * Bandwidth changed callback cls
+ */
+ void *bw_changed_cls;
+
+ /**
+ * ATS function to get preferences
+ */
+ GAS_get_preferences get_preferences;
+
+ /**
+ * Closure for ATS function to get preferences
+ */
+ void *get_preferences_cls;
+
+ /**
+ * ATS function to get properties
+ */
+ GAS_get_properties get_properties;
+
+ /**
+ * Closure for ATS function to get properties
+ */
+ void *get_properties_cls;
};
/**
*/
struct GAS_RIL_Handle
{
- /**
- * Statistics handle
- */
- struct GNUNET_STATISTICS_Handle *stats;
-
- /**
- * Hashmap containing all valid addresses
- */
- const struct GNUNET_CONTAINER_MultiHashMap *addresses;
-
- /**
- * Callbacks for the solver
- */
- struct RIL_Callbacks callbacks;
-
- /**
- * Bulk lock
- */
- int bulk_lock;
-
- /**
- * Number of changes while solver was locked
- */
- int bulk_requests;
-
- /**
- * Number of performed time-steps
- */
- unsigned long long step_count;
-
- /**
- * Interval time between steps in milliseconds //TODO put in agent
- */
- struct GNUNET_TIME_Relative step_time;
-
- /**
- * Task identifier of the next time-step to be executed //TODO put in agent
- */
- GNUNET_SCHEDULER_TaskIdentifier next_step;
-
- /**
- * Learning parameters
- */
- struct RIL_Learning_Parameters parameters;
-
- /**
- * Array of networks with global assignment state
- */
- struct RIL_Network * network_entries;
-
- /**
- * Networks count
- */
- unsigned int networks_count;
-
- /**
- * List of active peer-agents
- */
- struct RIL_Peer_Agent * agents_head;
- struct RIL_Peer_Agent * agents_tail;
+ /**
+ * Statistics handle
+ */
+ struct GNUNET_STATISTICS_Handle *stats;
+
+ /**
+ * Hashmap containing all valid addresses
+ */
+ const struct GNUNET_CONTAINER_MultiHashMap *addresses;
+
+ /**
+ * Callbacks for the solver
+ */
+ struct RIL_Callbacks *callbacks;
+
+ /**
+ * Bulk lock
+ */
+ int bulk_lock;
+
+ /**
+ * Number of changes while solver was locked
+ */
+ int bulk_requests;
+
+ /**
+ * Number of performed time-steps
+ */
+ unsigned long long step_count;
+
+ /**
+ * Interval time between steps in milliseconds //TODO? put in agent
+ */
+ struct GNUNET_TIME_Relative step_time;
+
+ /**
+ * Task identifier of the next time-step to be executed //TODO? put in agent
+ */
+ GNUNET_SCHEDULER_TaskIdentifier next_step;
+
+ /**
+ * Learning parameters
+ */
+ struct RIL_Learning_Parameters parameters;
+
+ /**
+ * Array of networks with global assignment state
+ */
+ struct RIL_Network * network_entries;
+
+ /**
+ * Networks count
+ */
+ unsigned int networks_count;
+
+ /**
+ * List of active peer-agents
+ */
+ struct RIL_Peer_Agent * agents_head;
+ struct RIL_Peer_Agent * agents_tail;
};
-
-
-
/**
* Private functions
* ---------------------------
* @param action a
* @return estimation value
*/
-double
-agent_estimate_q (struct RIL_Peer_Agent *agent,
- double *state,
- int action)
+static double
+agent_estimate_q (struct RIL_Peer_Agent *agent, double *state, int action)
{
- int i;
- double result = 0;
+ int i;
+ double result = 0;
- for (i = 0; i < agent->m; i++)
- {
- result += state[i] * (agent->W)[agent->m][action];
- }
+ for (i = 0; i < agent->m; i++)
+ {
+ result += state[i] * agent->W[action][i];
+ }
- return result;
+ return result;
}
/**
* @param agent agent performing the step
* @return yes, if exploring
*/
-int
+static int
agent_decide_exploration (struct RIL_Peer_Agent *agent)
{
- double r = (double) GNUNET_CRYPTO_random_u32(GNUNET_CRYPTO_QUALITY_WEAK, UINT32_MAX) / (double) UINT32_MAX;
-
- if (r < RIL_EXPLORE_RATIO)
- {
- return GNUNET_YES;
- }
- return GNUNET_NO;
+ double r = (double) GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
+ UINT32_MAX) / (double) UINT32_MAX;
+
+ if (r < RIL_EXPLORE_RATIO)
+ {
+ return GNUNET_YES;
+ }
+ return GNUNET_NO;
}
/**
* @param state the state from which to take the action
* @return the action promising most future reward
*/
-int
-agent_get_action_best (struct RIL_Peer_Agent *agent,
- double *state)
+static int
+agent_get_action_best (struct RIL_Peer_Agent *agent, double *state)
{
- int i;
- int max_i = -1;
- double cur_q;
- double max_q = DBL_MIN;
-
- for (i = 0; i < agent->m; i++)
- {
- cur_q = agent_estimate_q (agent, state, i);
- if (cur_q > max_q)
- {
- max_q = cur_q;
- max_i = i;
- }
- }
-
- GNUNET_assert(-1 != max_i);
-
- return max_i;
+ int i;
+ int max_i = -1;
+ double cur_q;
+ double max_q = -DBL_MAX;
+
+ for (i = 0; i < agent->n; i++)
+ {
+ cur_q = agent_estimate_q (agent, state, i);
+ if (cur_q > max_q)
+ {
+ max_q = cur_q;
+ max_i = i;
+ }
+ }
+
+ GNUNET_assert(-1 != max_i);
+
+ return max_i;
}
/**
* @param state the state from which to take the action
* @return any action
*/
-int
-agent_get_action_explore (struct RIL_Peer_Agent *agent,
- double *state)
+static int
+agent_get_action_explore (struct RIL_Peer_Agent *agent, double *state)
{
- return GNUNET_CRYPTO_random_u32(GNUNET_CRYPTO_QUALITY_WEAK, agent->n);
+ return GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, agent->n);
}
/**
* @param s_next the new state, the last step got the agent into
* @param a_prime the new
*/
-void
+static void
agent_update_weights (struct RIL_Peer_Agent *agent,
- double reward,
- double *s_next,
- int a_prime)
+ double reward,
+ double *s_next,
+ int a_prime)
{
- int i;
- double delta;
- double *theta = (agent->W)[agent->a_old];
-
- delta = reward + agent_estimate_q (agent, s_next, a_prime) -
- agent_estimate_q (agent, agent->s_old, agent->a_old);
- for (i = 0; i < agent->m; i++)
- {
- theta[i] += agent->envi->parameters.alpha * delta * (agent->e)[i];
- }
+ int i;
+ double delta;
+ double *theta = agent->W[agent->a_old];
+
+ delta = reward + agent_estimate_q (agent, s_next, a_prime)
+ - agent_estimate_q (agent, agent->s_old, agent->a_old);
+ for (i = 0; i < agent->m; i++)
+ {
+ theta[i] += agent->envi->parameters.alpha * delta * (agent->e)[i];
+ }
}
/**
* @param agent
* @param mod
*/
-void
+static void
agent_modify_eligibility (struct RIL_Peer_Agent *agent,
- enum RIL_E_Modification mod)
+ enum RIL_E_Modification mod)
{
- int i;
- double *e = agent->e;
- double gamma = agent->envi->parameters.gamma;
- double lambda = agent->envi->parameters.lambda;
-
- for (i = 0; i < agent->m; i++)
- {
- switch (mod)
- {
- case RIL_E_ACCUMULATE:
- e[i] += 1;
- break;
- case RIL_E_REPLACE:
- e[i] = 1;
- break;
- case RIL_E_SET:
- e[i] = gamma * lambda;
- break;
- case RIL_E_ZERO:
- e[i] = 0;
- break;
- }
- }
+ int i;
+ double *e = agent->e;
+ double gamma = agent->envi->parameters.gamma;
+ double lambda = agent->envi->parameters.lambda;
+
+ for (i = 0; i < agent->m; i++)
+ {
+ switch (mod)
+ {
+ case RIL_E_ACCUMULATE:
+ e[i] += 1;
+ break;
+ case RIL_E_REPLACE:
+ e[i] = 1;
+ break;
+ case RIL_E_SET:
+ e[i] = gamma * lambda;
+ break;
+ case RIL_E_ZERO:
+ e[i] = 0;
+ break;
+ }
+ }
+}
+
+static void
+envi_change_active_address (struct GAS_RIL_Handle *solver,
+ struct RIL_Peer_Agent *agent,
+ struct ATS_Address *new_address,
+ unsigned long long new_bw_in,
+ unsigned long long new_bw_out)
+{
+ int notify = GNUNET_NO;
+
+ if (agent->address != new_address)
+ {
+ agent->address->active = GNUNET_NO;
+ agent->address = new_address;
+ agent->address->active = GNUNET_YES;
+ agent->address->assigned_bw_in.value__ = htonl (agent->bw_in);
+ agent->address->assigned_bw_out.value__ = htonl (agent->bw_out);
+ notify |= GNUNET_YES;
+ }
+ if (agent->bw_in != new_bw_in)
+ {
+ agent->bw_in = new_bw_in;
+ agent->address->assigned_bw_in.value__ = htonl (new_bw_out);
+ notify |= GNUNET_YES;
+ }
+ if (agent->bw_out != new_bw_out)
+ {
+ agent->bw_out = new_bw_out;
+ agent->address->assigned_bw_out.value__ = htonl (new_bw_out);
+ notify |= GNUNET_YES;
+ }
+
+ if (notify)
+ {
+ solver->callbacks->bw_changed (solver->callbacks->bw_changed_cls,
+ agent->address);
+ }
}
/**
* @param solver the solver handle
* @return pointer to the state vector
*/
-double *
+static double *
envi_get_state (struct GAS_RIL_Handle *solver)
{
- int i;
- struct RIL_Network *net;
- double *state = GNUNET_malloc (sizeof (double) * solver->networks_count * 4);
-
- for (i = 0; i < solver->networks_count; i += 4)
- {
- net = (&solver->network_entries)[i];
- state[i] = (double) net->bw_in_assigned;
- state[i+1] = (double) net->bw_in_available;
- state[i+2] = (double) net->bw_out_assigned;
- state[i+3] = (double) net->bw_out_available;
- }
-
- return state;
+ int i;
+ struct RIL_Network *net;
+ double *state = GNUNET_malloc (sizeof (double) * solver->networks_count * 4);
+
+ for (i = 0; i < solver->networks_count; i++)
+ {
+ net = &solver->network_entries[i];
+ state[i * 4 + 0] = (double) net->bw_in_assigned;
+ state[i * 4 + 1] = (double) net->bw_in_available;
+ state[i * 4 + 2] = (double) net->bw_out_assigned;
+ state[i * 4 + 3] = (double) net->bw_out_available;
+ }
+
+ return state;
}
/**
* @param solver solver handle
* @return the reward
*/
-double
-envi_get_reward (struct GAS_RIL_Handle *solver)
+static double
+envi_get_reward (struct GAS_RIL_Handle *solver, struct RIL_Peer_Agent *agent)
+{
+ //TODO! implement reward calculation
+
+ return (double) GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
+ UINT32_MAX) / (double) UINT32_MAX;
+}
+
+static void
+envi_action_bw_double (struct GAS_RIL_Handle *solver,
+ struct RIL_Peer_Agent *agent,
+ int direction_in)
+{
+ if (direction_in)
+ {
+ envi_change_active_address (solver, agent, agent->address, agent->bw_in * 2,
+ agent->bw_out);
+ }
+ else
+ {
+ envi_change_active_address (solver, agent, agent->address, agent->bw_in,
+ agent->bw_out * 2);
+ }
+}
+
+static void
+envi_action_bw_halven (struct GAS_RIL_Handle *solver,
+ struct RIL_Peer_Agent *agent,
+ int direction_in)
+{
+ uint32_t min_bw = ntohl (GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT.value__);
+ unsigned long long new_bw;
+
+ if (direction_in)
+ {
+ new_bw = agent->bw_in / 2;
+ if (new_bw < min_bw)
+ new_bw = min_bw;
+ envi_change_active_address (solver, agent, agent->address, new_bw,
+ agent->bw_out);
+ }
+ else
+ {
+ new_bw = agent->bw_out / 2;
+ if (new_bw < min_bw)
+ new_bw = min_bw;
+ envi_change_active_address (solver, agent, agent->address, agent->bw_in,
+ new_bw);
+ }
+}
+
+static void
+envi_action_bw_inc (struct GAS_RIL_Handle *solver,
+ struct RIL_Peer_Agent *agent,
+ int direction_in)
{
- //TODO implement
- return (double) GNUNET_CRYPTO_random_u32(GNUNET_CRYPTO_QUALITY_WEAK, UINT32_MAX) / (double) UINT32_MAX;
+ uint32_t min_bw = ntohl (GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT.value__);
+
+ if (direction_in)
+ {
+ envi_change_active_address (solver, agent, agent->address,
+ agent->bw_in + (5 * min_bw), agent->bw_out);
+ }
+ else
+ {
+ envi_change_active_address (solver, agent, agent->address, agent->bw_in,
+ agent->bw_out + (5 * min_bw));
+ }
+}
+
+static void
+envi_action_bw_dec (struct GAS_RIL_Handle *solver,
+ struct RIL_Peer_Agent *agent,
+ int direction_in)
+{
+ uint32_t min_bw = ntohl (GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT.value__);
+ unsigned long long new_bw;
+
+ if (direction_in)
+ {
+ new_bw = agent->bw_in - (5 * min_bw);
+ if (new_bw < min_bw)
+ new_bw = min_bw;
+ envi_change_active_address (solver, agent, agent->address, new_bw,
+ agent->bw_out);
+ }
+ else
+ {
+ new_bw = agent->bw_out - (5 * min_bw);
+ if (new_bw < min_bw)
+ new_bw = min_bw;
+ envi_change_active_address (solver, agent, agent->address, agent->bw_in,
+ new_bw);
+ }
}
/**
* @param solver solver handle
* @param action action to perform by the solver
*/
-void
+static void
envi_do_action (struct GAS_RIL_Handle *solver,
- int action)
+ struct RIL_Peer_Agent *agent,
+ int action)
{
-
+ switch (action)
+ {
+ case RIL_ACTION_NOTHING:
+ break;
+ case RIL_ACTION_BW_IN_DBL:
+ envi_action_bw_double (solver, agent, GNUNET_YES);
+ break;
+ case RIL_ACTION_BW_IN_HLV:
+ envi_action_bw_halven (solver, agent, GNUNET_YES);
+ break;
+ case RIL_ACTION_BW_IN_INC:
+ envi_action_bw_inc (solver, agent, GNUNET_YES);
+ break;
+ case RIL_ACTION_BW_IN_DEC:
+ envi_action_bw_dec (solver, agent, GNUNET_YES);
+ break;
+ case RIL_ACTION_BW_OUT_DBL:
+ envi_action_bw_double (solver, agent, GNUNET_NO);
+ break;
+ case RIL_ACTION_BW_OUT_HLV:
+ envi_action_bw_halven (solver, agent, GNUNET_NO);
+ break;
+ case RIL_ACTION_BW_OUT_INC:
+ envi_action_bw_inc (solver, agent, GNUNET_NO);
+ break;
+ case RIL_ACTION_BW_OUT_DEC:
+ envi_action_bw_dec (solver, agent, GNUNET_NO);
+ break;
+ default:
+ // error - action does not exist
+ GNUNET_assert(GNUNET_NO);
+ }
}
/**
* next action is put into effect.
* @param agent the agent performing the step
*/
-void
+static void
agent_step (struct RIL_Peer_Agent *agent)
{
- int a_next = -1;
- double *s_next;
- double reward;
-
- s_next = envi_get_state(agent->envi);
- reward = envi_get_reward(agent->envi);
-
- switch (agent->envi->parameters.algorithm)
- {
- case RIL_ALGO_SARSA:
- agent_modify_eligibility (agent, RIL_E_SET);
- if (agent_decide_exploration (agent))
- {
- a_next = agent_get_action_explore (agent, s_next);
- }
- else
- {
- a_next = agent_get_action_best (agent, s_next);
- }
- agent_update_weights (agent, reward, s_next, a_next); //update weights with next action
- break;
-
- case RIL_ALGO_Q:
- a_next = agent_get_action_best (agent, s_next); //update weights with best action
- agent_update_weights (agent, reward, s_next, a_next);
- if (agent_decide_exploration (agent))
- {
- a_next = agent_get_action_explore (agent, s_next);
- agent_modify_eligibility(agent, RIL_E_ZERO);
- }
- else
- {
- a_next = agent_get_action_best (agent, s_next);
- agent_modify_eligibility(agent, RIL_E_SET);
- }
- break;
- }
-
- GNUNET_assert (-1 != a_next);
-
- agent_modify_eligibility (agent, RIL_E_ACCUMULATE);
-
- envi_do_action(agent->envi, a_next);
-
- GNUNET_free(agent->s_old);
- agent->s_old = s_next;
- agent->a_old = a_next;
-
- agent->step_count += 1;
+ int a_next = -1;
+ double *s_next;
+ double reward;
+
+ s_next = envi_get_state (agent->envi);
+ reward = envi_get_reward (agent->envi, agent);
+
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "agent_step() with algorithm %s\n",
+ agent->envi->parameters.algorithm ? "Q" : "SARSA");
+
+ switch (agent->envi->parameters.algorithm)
+ {
+ case RIL_ALGO_SARSA:
+ agent_modify_eligibility (agent, RIL_E_SET);
+ if (agent_decide_exploration (agent))
+ {
+ a_next = agent_get_action_explore (agent, s_next);
+ }
+ else
+ {
+ a_next = agent_get_action_best (agent, s_next);
+ }
+ //updates weights with selected action (on-policy), if not first step
+ if (-1 != agent->a_old)
+ agent_update_weights (agent, reward, s_next, a_next);
+ break;
+
+ case RIL_ALGO_Q:
+ //updates weights with best action, disregarding actually selected action (off-policy), if not first step
+ a_next = agent_get_action_best (agent, s_next);
+ if (-1 != agent->a_old)
+ agent_update_weights (agent, reward, s_next, a_next);
+ if (agent_decide_exploration (agent))
+ {
+ a_next = agent_get_action_explore (agent, s_next);
+ agent_modify_eligibility (agent, RIL_E_ZERO);
+ }
+ else
+ {
+ a_next = agent_get_action_best (agent, s_next);
+ agent_modify_eligibility (agent, RIL_E_SET);
+ }
+ break;
+ }
+
+ GNUNET_assert(-1 != a_next);
+
+ agent_modify_eligibility (agent, RIL_E_ACCUMULATE);
+
+ envi_do_action (agent->envi, agent, a_next);
+
+ GNUNET_free(agent->s_old);
+ agent->s_old = s_next;
+ agent->a_old = a_next;
+
+ agent->step_count += 1;
}
/**
* @param solver the solver handle
* @param tc task context for the scheduler
*/
-void
-ril_periodic_step (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+static void
+ril_periodic_step (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
- struct GAS_RIL_Handle *solver = cls;
- struct RIL_Peer_Agent *cur;
-
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "RIL step number %d\n", solver->step_count);
-
- for (cur = solver->agents_head; NULL != cur; cur = cur->next)
- {
- if (cur->active)
- {
- agent_step (cur);
- }
- }
-
- solver->step_count += 1;
- solver->next_step = GNUNET_SCHEDULER_add_delayed (
- solver->step_time,
- &ril_periodic_step,
- solver);
+ struct GAS_RIL_Handle *solver = cls;
+ struct RIL_Peer_Agent *cur;
+
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "RIL step number %d\n",
+ solver->step_count);
+
+ for (cur = solver->agents_head; NULL != cur; cur = cur->next)
+ {
+ if (cur->active)
+ {
+ agent_step (cur);
+ }
+ }
+
+ solver->step_count += 1;
+ solver->next_step = GNUNET_SCHEDULER_add_delayed (solver->step_time,
+ &ril_periodic_step, solver);
}
/**
* @param peer the one in question
* @return handle to the new agent
*/
-struct RIL_Peer_Agent *
-agent_init (void *s,
- const struct GNUNET_PeerIdentity *peer)
+static struct RIL_Peer_Agent *
+agent_init (void *s, const struct GNUNET_PeerIdentity *peer)
{
- int i;
- struct GAS_RIL_Handle * solver = s;
- struct RIL_Peer_Agent * agent = GNUNET_malloc (sizeof (struct RIL_Peer_Agent));
-
- agent->envi = solver;
- agent->peer = *peer;
- agent->step_count = 0;
- agent->active = GNUNET_NO;
- agent->s_old = NULL;
- agent->n = solver->networks_count * 4;
- agent->m = RIL_NUM_ACTIONS;
- agent->W = (double **) GNUNET_malloc (sizeof (double) * agent->n);
- for (i = 0; i < agent->n; i++)
- {
- (agent->W)[i] = (double *) GNUNET_malloc (sizeof (double) * agent->m);
- }
- agent->a_old = -1;
- agent->e = (double *) GNUNET_malloc (sizeof (double) * agent->m);
- agent_modify_eligibility (agent, RIL_E_ZERO);
-
- GNUNET_CONTAINER_DLL_insert (solver->agents_head, solver->agents_tail, agent);
-
- return agent;
+ int i;
+ struct GAS_RIL_Handle * solver = s;
+ struct RIL_Peer_Agent * agent = GNUNET_malloc (sizeof (struct RIL_Peer_Agent));
+
+ agent->envi = solver;
+ agent->peer = *peer;
+ agent->step_count = 0;
+ agent->active = GNUNET_NO;
+ agent->s_old = envi_get_state (solver);
+ agent->n = RIL_ACTION_TYPE_NUM;
+ agent->m = solver->networks_count * 4;
+ agent->W = (double **) GNUNET_malloc (sizeof (double) * agent->n);
+ for (i = 0; i < agent->n; i++)
+ {
+ agent->W[i] = (double *) GNUNET_malloc (sizeof (double) * agent->m);
+ }
+ agent->a_old = -1;
+ agent->e = (double *) GNUNET_malloc (sizeof (double) * agent->m);
+ agent_modify_eligibility (agent, RIL_E_ZERO);
+
+ GNUNET_CONTAINER_DLL_insert_tail(solver->agents_head, solver->agents_tail,
+ agent);
+
+ return agent;
}
/**
* @param s solver handle
* @param agent the agent to retire
*/
-void
-agent_die (struct GAS_RIL_Handle *solver,
- struct RIL_Peer_Agent *agent)
+static void
+agent_die (struct GAS_RIL_Handle *solver, struct RIL_Peer_Agent *agent)
+{
+ int i;
+
+ for (i = 0; i < agent->n; i++)
+ {
+ GNUNET_free(agent->W[i]);
+ }
+ GNUNET_free(agent->W);
+ GNUNET_free(agent->e);
+ GNUNET_free(agent->s_old);
+}
+
+static void
+ril_remove_agent (struct GAS_RIL_Handle *s, struct RIL_Peer_Agent *agent)
{
- //TODO implement
+ struct RIL_Peer_Agent *cur_agent;
+ struct RIL_Peer_Agent *next_agent;
+
+ cur_agent = s->agents_head;
+ while (NULL != cur_agent)
+ {
+ next_agent = cur_agent->next;
+
+ if (agent == cur_agent)
+ {
+ GNUNET_CONTAINER_DLL_remove(s->agents_head, s->agents_tail, cur_agent);
+ agent_die (s, cur_agent);
+ }
+
+ cur_agent = next_agent;
+ }
}
+/**
+ * Counts the (active) agents
+ * @param solver solver handle
+ * @param active_only whether only active agents should be counted
+ * @return number of agents
+ */
+//static int
+//ril_count_agents (struct GAS_RIL_Handle *solver, int active_only)
+//{
+// int c;
+// struct RIL_Peer_Agent *cur;
+//
+// c = 0;
+// for (cur = solver->agents_head; NULL != cur; cur = cur->next)
+// {
+// if ((!active_only) || (active_only && cur->active))
+// {
+// c += 1;
+// }
+// }
+// return c;
+//}
+
/**
* Returns the agent for a peer
* @param s solver handle
* @param peer identity of the peer
+ * @param create whether to create an agent if none is allocated yet
* @return agent
*/
-struct RIL_Peer_Agent *
+static struct RIL_Peer_Agent *
ril_get_agent (struct GAS_RIL_Handle *solver,
- const struct GNUNET_PeerIdentity *peer)
+ const struct GNUNET_PeerIdentity *peer,
+ int create)
{
- struct RIL_Peer_Agent *cur;
+ struct RIL_Peer_Agent *cur;
+
+ for (cur = solver->agents_head; NULL != cur; cur = cur->next)
+ {
+ if (0 == GNUNET_CRYPTO_hash_cmp (&peer->hashPubKey, &cur->peer.hashPubKey))
+ {
+ return cur;
+ }
+ }
+
+ if (create)
+ return agent_init (solver, peer);
+ return NULL ;
+}
- for (cur = solver->agents_head; NULL != cur; cur = cur->next)
- {
- if (0 == GNUNET_CRYPTO_hash_cmp (&peer->hashPubKey, &cur->peer.hashPubKey))
- {
- return cur;
- }
- }
+static int
+ril_network_is_active (struct RIL_Network *network)
+{
+ uint32_t min_bw = ntohl (GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT.value__);
- return agent_init (solver, peer);
+ if (network->bw_out_available < min_bw)
+ return GNUNET_NO;
+ return GNUNET_YES;
}
/**
* @param value address
* @return whether iterator should continue
*/
-int
-init_agents_it (void *cls,
- const struct GNUNET_HashCode *key,
- void *value)
+static int
+ril_init_agents_it (void *cls, const struct GNUNET_HashCode *key, void *value)
{
- struct GAS_RIL_Handle *solver = cls;
- struct ATS_Address *address = value;
- struct RIL_Peer_Agent *agent;
-
- agent = ril_get_agent (solver, &address->peer);
-
- GNUNET_assert (agent != NULL);
-
- if (NULL == agent->address)
- {
- agent->address = address;
- }
-
- return GNUNET_YES;
+ struct GAS_RIL_Handle *solver = cls;
+ struct ATS_Address *address = value;
+ struct RIL_Peer_Agent *agent = NULL;
+ uint32_t min_bw = ntohl (GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT.value__);
+
+ if (ril_network_is_active (address->solver_information))
+ {
+ agent = ril_get_agent (solver, &address->peer, GNUNET_YES);
+
+ GNUNET_assert(NULL != agent);
+
+ if (NULL == agent->address)
+ {
+ agent->address = address;
+ agent->address->active = GNUNET_YES;
+ agent->bw_in = min_bw;
+ agent->address->assigned_bw_in.value__ = htonl (min_bw);
+ agent->bw_out = min_bw;
+ agent->address->assigned_bw_out.value__ = htonl (min_bw);
+ }
+ }
+ return GNUNET_YES;
}
+static void
+ril_get_new_address_or_delete (struct GAS_RIL_Handle *solver,
+ struct RIL_Peer_Agent *agent)
+{
+ uint32_t min_bw = ntohl (GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT.value__);
+ //get new address for agent or delete agent
+
+ agent->address = NULL; //forget current address
+ GNUNET_CONTAINER_multihashmap_iterate (solver->addresses, &ril_init_agents_it,
+ solver); //put another address
+
+ if (NULL == agent->address) //no other address available
+ {
+ agent->active = GNUNET_NO;
+ ril_remove_agent (solver, agent);
+ }
+ else
+ {
+ envi_change_active_address (solver, agent, agent->address, min_bw, min_bw);
+ }
+}
+/**
+ * Lookup network struct by type
+ *
+ * @param s the solver handle
+ * @param type the network type
+ * @return the network struct
+ */
+static struct RIL_Network *
+ril_get_network (struct GAS_RIL_Handle *s, uint32_t type)
+{
+ int i;
+
+ for (i = 0; i < s->networks_count; i++)
+ {
+ if (s->network_entries[i].type == type)
+ {
+ return &s->network_entries[i];
+ }
+ }
+ return NULL ;
+}
/**
* Solver API functions
*/
void
GAS_ril_address_change_preference (void *s,
- const struct GNUNET_PeerIdentity *peer,
- enum GNUNET_ATS_PreferenceKind kind,
- double pref_rel)
+ const struct GNUNET_PeerIdentity *peer,
+ enum GNUNET_ATS_PreferenceKind kind,
+ double pref_rel)
{
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Preference `%s' for peer `%s' changed to %.2f \n",
- GNUNET_ATS_print_preference_type (kind),
- GNUNET_i2s (peer),
- pref_rel);
- /*
- * Nothing to do here. Preferences are considered during reward calculation.
- */
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "API_address_change_preference() Preference '%s' for peer '%s' changed to %.2f \n",
+ GNUNET_ATS_print_preference_type (kind), GNUNET_i2s (peer), pref_rel);
+ /*
+ * Nothing to do here. Preferences are considered during reward calculation.
+ */
}
-
/**
* Init the reinforcement learning problem solver
*
*/
void *
GAS_ril_init (const struct GNUNET_CONFIGURATION_Handle *cfg,
- const struct GNUNET_STATISTICS_Handle *stats,
- const struct GNUNET_CONTAINER_MultiHashMap *addresses,
- int *network,
- unsigned long long *out_quota,
- unsigned long long *in_quota,
- int dest_length,
- GAS_bandwidth_changed_cb bw_changed_cb,
- void *bw_changed_cb_cls,
- GAS_get_preferences get_preference,
- void *get_preference_cls,
- GAS_get_properties get_properties,
- void *get_properties_cls)
+ const struct GNUNET_STATISTICS_Handle *stats,
+ const struct GNUNET_CONTAINER_MultiHashMap *addresses,
+ int *network,
+ unsigned long long *out_quota,
+ unsigned long long *in_quota,
+ int dest_length,
+ GAS_bandwidth_changed_cb bw_changed_cb,
+ void *bw_changed_cb_cls,
+ GAS_get_preferences get_preference,
+ void *get_preference_cls,
+ GAS_get_properties get_properties,
+ void *get_properties_cls)
{
- //TODO implement
- int c;
- unsigned long long tmp;
- struct RIL_Network * cur;
- struct GAS_RIL_Handle *solver = GNUNET_malloc (sizeof (struct GAS_RIL_Handle));
- char * net_str[GNUNET_ATS_NetworkTypeCount] = GNUNET_ATS_NetworkTypeString;
-
- GNUNET_assert (NULL != cfg);
- GNUNET_assert (NULL != stats);
- GNUNET_assert (NULL != network);
- GNUNET_assert (NULL != bw_changed_cb);
- GNUNET_assert (NULL != get_preference);
- GNUNET_assert (NULL != get_properties);
-
- if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_time(cfg, "ats", "RIL_STEP_TIME", &solver->step_time))
- {
- solver->step_time = RIL_DEFAULT_STEP_TIME;
- }
- if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_size(cfg, "ats", "RIL_DISCOUNT_FACTOR", &tmp))
- {
- solver->parameters.gamma = (double) tmp / 100;;
- }
- else
- {
- solver->parameters.gamma = RIL_DEFAULT_DISCOUNT_FACTOR;
- }
- if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_size(cfg, "ats", "RIL_GRADIENT_STEP_SIZE", &tmp))
- {
- solver->parameters.alpha = (double) tmp / 100;;
- }
- else
- {
- solver->parameters.alpha = RIL_DEFAULT_GRADIENT_STEP_SIZE;
- }
- if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_size(cfg, "ats", "RIL_TRACE_DECAY", &tmp))
- {
- solver->parameters.lambda = (double) tmp / 100;;
- }
- else
- {
- solver->parameters.lambda = RIL_DEFAULT_TRACE_DECAY;
- }
-
- solver->stats = (struct GNUNET_STATISTICS_Handle *) stats;
- solver->callbacks.bw_changed = bw_changed_cb;
- solver->callbacks.bw_changed_cls = bw_changed_cb_cls;
- solver->callbacks.get_preferences = get_preference;
- solver->callbacks.get_preferences_cls = get_preference_cls;
- solver->callbacks.get_properties = get_properties;
- solver->callbacks.get_properties_cls = get_properties_cls;
- solver->networks_count = dest_length;
- solver->network_entries = GNUNET_malloc (dest_length * sizeof (struct RIL_Network));
- solver->bulk_lock = GNUNET_NO;
- solver->addresses = addresses;
- solver->step_count = 0;
-
- for (c = 0; c < dest_length; c++)
- {
- cur = &solver->network_entries[c];
- cur->type = network[c];
- cur->bw_in_available = in_quota[c];
- cur->bw_in_assigned = 0;
- cur->bw_out_available = out_quota[c];
- cur->bw_out_assigned = 0;
- cur->desc = net_str[c];
- }
-
- c = GNUNET_CONTAINER_multihashmap_iterate (addresses, &init_agents_it, solver);
-
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "ril_init() has been called\n");
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "RIL number of addresses: %d\n", c);
-
- solver->next_step = GNUNET_SCHEDULER_add_delayed (
- GNUNET_TIME_relative_multiply (GNUNET_TIME_relative_get_millisecond_ (), 1000),
- &ril_periodic_step,
- solver);
-
- return solver;
+ int c;
+ unsigned long long tmp;
+ char *string;
+ struct RIL_Network * cur;
+ struct GAS_RIL_Handle *solver = GNUNET_malloc (sizeof (struct GAS_RIL_Handle));
+
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "API_init() Initializing RIL solver\n");
+
+ GNUNET_assert(NULL != cfg);
+ GNUNET_assert(NULL != stats);
+ GNUNET_assert(NULL != network);
+ GNUNET_assert(NULL != bw_changed_cb);
+ GNUNET_assert(NULL != get_preference);
+ GNUNET_assert(NULL != get_properties);
+
+ if (GNUNET_OK
+ != GNUNET_CONFIGURATION_get_value_time (cfg, "ats", "RIL_STEP_TIME",
+ &solver->step_time))
+ {
+ solver->step_time = RIL_DEFAULT_STEP_TIME;
+ }
+ if (GNUNET_OK
+ == GNUNET_CONFIGURATION_get_value_string (cfg, "ats", "RIL_ALGORITHM",
+ &string) && NULL != string && 0 == strcmp (string, "SARSA"))
+ {
+ solver->parameters.algorithm = RIL_ALGO_SARSA;
+ }
+ else
+ {
+ solver->parameters.algorithm = RIL_DEFAULT_ALGORITHM;
+ }
+ if (GNUNET_OK
+ == GNUNET_CONFIGURATION_get_value_size (cfg, "ats", "RIL_DISCOUNT_FACTOR",
+ &tmp))
+ {
+ solver->parameters.gamma = (double) tmp / 100;
+ }
+ else
+ {
+ solver->parameters.gamma = RIL_DEFAULT_DISCOUNT_FACTOR;
+ }
+ if (GNUNET_OK
+ == GNUNET_CONFIGURATION_get_value_size (cfg, "ats",
+ "RIL_GRADIENT_STEP_SIZE", &tmp))
+ {
+ solver->parameters.alpha = (double) tmp / 100;
+ }
+ else
+ {
+ solver->parameters.alpha = RIL_DEFAULT_GRADIENT_STEP_SIZE;
+ }
+ if (GNUNET_OK
+ == GNUNET_CONFIGURATION_get_value_size (cfg, "ats", "RIL_TRACE_DECAY",
+ &tmp))
+ {
+ solver->parameters.lambda = (double) tmp / 100;
+ }
+ else
+ {
+ solver->parameters.lambda = RIL_DEFAULT_TRACE_DECAY;
+ }
+
+ solver->stats = (struct GNUNET_STATISTICS_Handle *) stats;
+ solver->callbacks = GNUNET_malloc (sizeof (struct RIL_Callbacks));
+ solver->callbacks->bw_changed = bw_changed_cb;
+ solver->callbacks->bw_changed_cls = bw_changed_cb_cls;
+ solver->callbacks->get_preferences = get_preference;
+ solver->callbacks->get_preferences_cls = get_preference_cls;
+ solver->callbacks->get_properties = get_properties;
+ solver->callbacks->get_properties_cls = get_properties_cls;
+ solver->networks_count = dest_length;
+ solver->network_entries =
+ GNUNET_malloc (dest_length * sizeof (struct RIL_Network));
+ solver->bulk_lock = GNUNET_NO;
+ solver->addresses = addresses;
+ solver->step_count = 0;
+
+ for (c = 0; c < dest_length; c++)
+ {
+ cur = &solver->network_entries[c];
+ cur->type = network[c];
+ cur->bw_in_available = in_quota[c];
+ cur->bw_in_assigned = 0;
+ cur->bw_out_available = out_quota[c];
+ cur->bw_out_assigned = 0;
+ }
+
+ solver->next_step = GNUNET_SCHEDULER_add_delayed (
+ GNUNET_TIME_relative_multiply (GNUNET_TIME_relative_get_millisecond_ (),
+ 1000), &ril_periodic_step, solver);
+
+ return solver;
}
/**
void
GAS_ril_done (void * solver)
{
- //TODO implement
- /*
- * dealloc: agents, learning parameters, callbacks
- */
- struct GAS_RIL_Handle *s = solver;
-
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "ril_done() has been called\n");
-
- GNUNET_SCHEDULER_cancel (s->next_step);
- GNUNET_free (s->network_entries);
- GNUNET_free (s);
+ struct GAS_RIL_Handle *s = solver;
+ struct RIL_Peer_Agent *cur_agent;
+ struct RIL_Peer_Agent *next_agent;
+
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "API_done() Shutting down RIL solver\n");
+
+ cur_agent = s->agents_head;
+ while (NULL != cur_agent)
+ {
+ next_agent = cur_agent->next;
+ GNUNET_CONTAINER_DLL_remove(s->agents_head, s->agents_tail, cur_agent);
+ agent_die (s, cur_agent);
+ cur_agent = next_agent;
+ }
+
+ GNUNET_SCHEDULER_cancel (s->next_step);
+ GNUNET_free(s->callbacks);
+ GNUNET_free(s->network_entries);
+ GNUNET_free(s);
}
-
/**
* Add a single address within a network to the solver
*
*/
void
GAS_ril_address_add (void *solver,
- struct ATS_Address *address,
- uint32_t network)
+ struct ATS_Address *address,
+ uint32_t network)
{
- //TODO implement
- /*
- * if (new peer)
- * initialize new agent
- * Add address
- * increase state vector
- * knowledge matrix
- * and action vector
- */
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "ril_address_add() has been called\n");
+ struct GAS_RIL_Handle *s = solver;
+ //TODO! implement solver address add
+ /*
+ * if (new peer)
+ * initialize new agent
+ * Add address
+ * increase state vector
+ * knowledge matrix
+ * and action vector
+ */
+
+ address->solver_information = ril_get_network (s, network);
+
+ /*
+ * reiterate all addresses, create new agent if necessary and give the agent the address
+ */
+ GNUNET_CONTAINER_multihashmap_iterate (s->addresses, &ril_init_agents_it,
+ solver);
+
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "API_address_add() Added %s address for peer '%s'\n", address->plugin,
+ GNUNET_i2s (&address->peer));
}
/**
*/
void
GAS_ril_address_delete (void *solver,
- struct ATS_Address *address,
- int session_only)
+ struct ATS_Address *address,
+ int session_only)
{
- //TODO implement
- /*
- * remove address
- * if (last address of peer)
- * remove agent
- * else
- * decrease state vector
- * decrease knowledge matrix
- * decrease action vector
- */
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "ril_address_delete() has been called\n");
+ //TODO! implement solver address delete
+ //TODO! delete session only
+ /*
+ * remove address
+ * if (last address of peer)
+ * remove agent
+ * else
+ * decrease state vector
+ * decrease knowledge matrix
+ * decrease action vector
+ */
+ struct GAS_RIL_Handle *s = solver;
+ struct RIL_Peer_Agent *agent;
+
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "API_address_delete() deleting %s address %p for peer '%s'\n",
+ address->active ? "active" : "inactive", address,
+ GNUNET_i2s (&address->peer));
+
+ agent = ril_get_agent (s, &address->peer, GNUNET_NO);
+
+ if (NULL == agent)
+ {
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "API_address_delete() deleting address for unallocated agent\n");
+ return;
+ }
+
+ if (address == agent->address) //if used address deleted
+ {
+ address->active = GNUNET_NO;
+ ril_get_new_address_or_delete (s, agent);
+ }
+
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "API_address_delete() Deleted %s%s address for peer '%s'\n",
+ session_only ? "session for " : "", address->plugin,
+ GNUNET_i2s (&address->peer));
}
/**
*/
void
GAS_ril_address_property_changed (void *solver,
- struct ATS_Address *address,
- uint32_t type,
- uint32_t abs_value,
- double rel_value)
+ struct ATS_Address *address,
+ uint32_t type,
+ uint32_t abs_value,
+ double rel_value)
{
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Property `%s' for peer `%s' address %p changed to %.2f \n",
- GNUNET_ATS_print_property_type (type),
- GNUNET_i2s (&address->peer),
- address, rel_value);
- /*
- * Nothing to do here, properties are considered in every reward calculation
- */
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "API_address_property_changed() Property '%s' for peer '%s' address %p changed "
+ "to %.2f \n", GNUNET_ATS_print_property_type (type),
+ GNUNET_i2s (&address->peer), address, rel_value);
+ /*
+ * Nothing to do here, properties are considered in every reward calculation
+ */
}
-
/**
* Transport session for this address has changed
*
*/
void
GAS_ril_address_session_changed (void *solver,
- struct ATS_Address *address,
- uint32_t cur_session,
- uint32_t new_session)
+ struct ATS_Address *address,
+ uint32_t cur_session,
+ uint32_t new_session)
{
- //TODO implement
- /*
- * Potentially add session activity as a feature in state vector
- */
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "ril_address_session_changed() has been called\n");
+ //TODO? consider session changed in solver behaviour
+ /*
+ * Potentially add session activity as a feature in state vector
+ */
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "API_address_session_changed()\n");
}
-
/**
* Usage for this address has changed
*
*/
void
GAS_ril_address_inuse_changed (void *solver,
- struct ATS_Address *address,
- int in_use)
+ struct ATS_Address *address,
+ int in_use)
{
- //TODO implement
- /**
- * See matthias' email
- */
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "ril_address_inuse_changed() has been called\n");
+ //TODO! consider address_inuse_changed according to matthias' email
+ /**
+ * See matthias' email
+ */
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "API_address_inuse_changed() Usage for %s address of peer '%s' changed to %s\n",
+ address->plugin, GNUNET_i2s (&address->peer),
+ (GNUNET_YES == in_use) ? "USED" : "UNUSED");
}
/**
*/
void
GAS_ril_address_change_network (void *solver,
- struct ATS_Address *address,
- uint32_t current_network,
- uint32_t new_network)
+ struct ATS_Address *address,
+ uint32_t current_network,
+ uint32_t new_network)
{
- //TODO implement
- /*
- * update network
- */
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "ril_address_change_network() has been called\n");
+ struct GAS_RIL_Handle *s = solver;
+ struct RIL_Peer_Agent *agent;
+ struct RIL_Network *net;
+
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "API_address_change_network() Network type changed, moving "
+ "%s address of peer %s from '%s' to '%s'\n",
+ (GNUNET_YES == address->active) ? "active" : "inactive",
+ GNUNET_i2s (&address->peer),
+ GNUNET_ATS_print_network_type (current_network),
+ GNUNET_ATS_print_network_type (new_network));
+
+ address->solver_information = ril_get_network (solver, new_network);
+
+ if (address->active)
+ {
+ agent = ril_get_agent (solver, &address->peer, GNUNET_NO);
+
+ //remove from old network
+ net = ril_get_network (s, current_network);
+ net->bw_in_assigned -= agent->bw_in;
+ net->bw_out_assigned -= agent->bw_out;
+
+ if (ril_network_is_active (ril_get_network (s, new_network)))
+ {
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "New network is active\n");
+ //add to new network
+ net = ril_get_network (s, new_network);
+ net->bw_in_assigned += agent->bw_in;
+ net->bw_out_assigned += agent->bw_out;
+
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "API_address_change_network() Moved %d inbound and %d "
+ "outbound\n", agent->bw_in, agent->bw_out);
+ }
+ else //new network for this address is not active => address must not be considered
+ {
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "New network is not active\n");
+
+ net = agent->address->solver_information;
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Before: active address %p is %s\n",
+ agent->address, GNUNET_ATS_print_network_type (net->type));
+
+ address->active = GNUNET_NO;
+ ril_get_new_address_or_delete (s, agent);
+
+ net = agent->address->solver_information;
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "After: active address %p is %s\n",
+ agent->address, GNUNET_ATS_print_network_type (net->type));
+ }
+ }
}
/**
*/
void
GAS_ril_address_preference_feedback (void *solver,
- void *application,
- const struct GNUNET_PeerIdentity *peer,
- const struct GNUNET_TIME_Relative scope,
- enum GNUNET_ATS_PreferenceKind kind,
- double score)
+ void *application,
+ const struct GNUNET_PeerIdentity *peer,
+ const struct GNUNET_TIME_Relative scope,
+ enum GNUNET_ATS_PreferenceKind kind,
+ double score)
{
- //TODO implement
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "ril_address_preference_feedback() has been called\n");
+ //TODO! collect reward until next reward calculation
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "API_address_preference_feedback() Peer '%s' got a feedback of %+.3f from application %s for "
+ "preference %s for %d seconds\n", GNUNET_i2s (peer), "UNKNOWN",
+ GNUNET_ATS_print_preference_type (kind), scope.rel_value_us / 1000000);
}
/**
void
GAS_ril_bulk_start (void *solver)
{
- //TODO implement
- /*
- * bulk counter up, but not really relevant, because there is no complete calculation of the
- * bandwidth assignment triggered anyway. Therefore, changes to addresses can come and go as
- * they want. Consideration: Step-pause during bulk-start-stop period...
- */
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "ril_bulk_start() has been called\n");
+ //TODO? consideration: keep bulk counter and stop agents during bulk
+ /*
+ * bulk counter up, but not really relevant, because there is no complete calculation of the
+ * bandwidth assignment triggered anyway. Therefore, changes to addresses can come and go as
+ * they want. Consideration: Step-pause during bulk-start-stop period...
+ */
+
+ //GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "API_bulk_start()\n");
}
-
/**
* Bulk operation done
*/
void
GAS_ril_bulk_stop (void *solver)
{
- //TODO implement
- /*
- * bulk counter down, see bulk_start()
- */
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "ril_bulk_stop() has been called\n");
+ //TODO? consideration: keep bulk counter and stop agents during bulk
+ /*
+ * bulk counter down, see bulk_start()
+ */
+
+ //GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "API_bulk_stop()\n");
}
/**
*/
const struct ATS_Address *
GAS_ril_get_preferred_address (void *solver,
- const struct GNUNET_PeerIdentity *peer)
+ const struct GNUNET_PeerIdentity *peer)
{
- //TODO implement, gets only the first address for now
+ /*
+ * activate agent, return currently chosen address
+ */
+ struct GAS_RIL_Handle *s = solver;
+ struct RIL_Peer_Agent *agent;
+
+ agent = ril_get_agent (s, peer, GNUNET_NO);
- /*
- * connect-only for requested peers, move agent to active list
- */
- struct GAS_RIL_Handle *s = solver;
- struct RIL_Peer_Agent *agent;
+ if (NULL == agent)
+ {
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "API_get_preferred_address() No agent for peer '%s' do not suggest address\n",
+ GNUNET_i2s (peer));
+ return NULL ;
+ }
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "ril_get_preferred_address() has been called\n");
+ agent->active = GNUNET_YES;
- agent = ril_get_agent(s, peer);
- agent->active = GNUNET_YES;
+ GNUNET_assert(NULL != agent->address);
- if (0 == GNUNET_CONTAINER_multihashmap_contains(s->addresses, &peer->hashPubKey))
- {
- return GNUNET_CONTAINER_multihashmap_get(s->addresses, &peer->hashPubKey);
- }
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "API_get_preferred_address() Activated agent for peer '%s' with %s address\n",
+ GNUNET_i2s (peer), agent->address->plugin);
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "No address for peer in addresses\n");
- return NULL;
+ return agent->address;
}
/**
*/
void
GAS_ril_stop_get_preferred_address (void *solver,
- const struct GNUNET_PeerIdentity *peer)
+ const struct GNUNET_PeerIdentity *peer)
{
- //TODO implement
- /*
- * connect-only for requested peers, move agent to paused list
- */
- struct GAS_RIL_Handle *s = solver;
- struct RIL_Peer_Agent *agent;
+ struct GAS_RIL_Handle *s = solver;
+ struct RIL_Peer_Agent *agent;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "ril_stop_get_preferred_address() has been called\n");
+ agent = ril_get_agent (s, peer, GNUNET_NO);
+ agent->active = GNUNET_NO;
- agent = ril_get_agent(s, peer);
- agent->active = GNUNET_NO;
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "API_stop_get_preferred_address() Paused agent for peer '%s' with %s address\n",
+ GNUNET_i2s (peer), agent->address->plugin);
}
/* end of gnunet-service-ats-solver_ril.c */