gnunet-service-messenger_subscription.c File Reference

#include "platform.h"
#include "gnunet-service-messenger_subscription.h"
#include "gnunet-service-messenger_member.h"
#include "gnunet-service-messenger_room.h"

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Functions
struct GNUNET_MESSENGER_Subscription *	create_subscription (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_Member *member, const struct GNUNET_ShortHashCode *discourse, struct GNUNET_TIME_Absolute timestamp, struct GNUNET_TIME_Relative duration)
void	destroy_subscription (struct GNUNET_MESSENGER_Subscription *subscription)
const struct GNUNET_ShortHashCode *	get_subscription_discourse (const struct GNUNET_MESSENGER_Subscription *subscription)
enum GNUNET_GenericReturnValue	has_subscription_of_timestamp (const struct GNUNET_MESSENGER_Subscription *subscription, struct GNUNET_TIME_Absolute timestamp)
void	update_subscription (struct GNUNET_MESSENGER_Subscription *subscription, struct GNUNET_TIME_Absolute timestamp, struct GNUNET_TIME_Relative duration)
static void	task_subscription_exit (void *cls)
void	update_subscription_timing (struct GNUNET_MESSENGER_Subscription *subscription)

Function Documentation

create_subscription()

struct GNUNET_MESSENGER_Subscription * create_subscription	(	struct GNUNET_MESSENGER_SrvRoom *	room,
		struct GNUNET_MESSENGER_Member *	member,
		const struct GNUNET_ShortHashCode *	discourse,
		struct GNUNET_TIME_Absolute	timestamp,
		struct GNUNET_TIME_Relative	duration
	)

Definition at line 33 of file gnunet-service-messenger_subscription.c.

{
  struct GNUNET_MESSENGER_Subscription *subscription;
 
  GNUNET_assert ((room) && (member) && (discourse));
 
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Create new subscription: %s [%s]\n",
              GNUNET_h2s (&(room->key)),
              GNUNET_sh2s (discourse));
 
  subscription = GNUNET_new (struct GNUNET_MESSENGER_Subscription);
 
  if (! subscription)
    return NULL;
 
  subscription->room = room;
  subscription->member = member;
  subscription->task = NULL;
 
  memcpy (
    &(subscription->discourse),
    discourse,
    sizeof (struct GNUNET_ShortHashCode));
 
  subscription->start = timestamp;
  subscription->end = GNUNET_TIME_absolute_add (timestamp, duration);
 
  return subscription;
}

References GNUNET_MESSENGER_Subscription::discourse, duration, GNUNET_MESSENGER_Subscription::end, GNUNET_assert, GNUNET_ERROR_TYPE_DEBUG, GNUNET_h2s(), GNUNET_log, GNUNET_new, GNUNET_sh2s(), GNUNET_TIME_absolute_add(), GNUNET_MESSENGER_SrvRoom::key, GNUNET_MESSENGER_Subscription::member, GNUNET_MESSENGER_Subscription::room, GNUNET_MESSENGER_Subscription::start, GNUNET_MESSENGER_Subscription::task, and timestamp().

Referenced by handle_message_subscribe().

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destroy_subscription()

void destroy_subscription

(

struct GNUNET_MESSENGER_Subscription *

subscription

)

Definition at line 69 of file gnunet-service-messenger_subscription.c.

{
  GNUNET_assert (subscription);
 
  if (subscription->task)
    GNUNET_SCHEDULER_cancel (subscription->task);
 
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Free subscription: %s [%s]\n",
              GNUNET_h2s (&(subscription->room->key)),
              GNUNET_sh2s (&(subscription->discourse)));
 
  GNUNET_free (subscription);
}

References GNUNET_MESSENGER_Subscription::discourse, GNUNET_assert, GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_h2s(), GNUNET_log, GNUNET_SCHEDULER_cancel(), GNUNET_sh2s(), GNUNET_MESSENGER_SrvRoom::key, GNUNET_MESSENGER_Subscription::room, and GNUNET_MESSENGER_Subscription::task.

Referenced by iterate_destroy_subscription(), and task_subscription_exit().

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get_subscription_discourse()

const struct GNUNET_ShortHashCode * get_subscription_discourse

(

const struct GNUNET_MESSENGER_Subscription *

subscription

)

Definition at line 85 of file gnunet-service-messenger_subscription.c.

{
  GNUNET_assert (subscription);
 
  return &(subscription->discourse);
}

References GNUNET_MESSENGER_Subscription::discourse, and GNUNET_assert.

Referenced by add_member_subscription(), and remove_member_subscription().

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has_subscription_of_timestamp()

enum GNUNET_GenericReturnValue has_subscription_of_timestamp	(	const struct GNUNET_MESSENGER_Subscription *	subscription,
		struct GNUNET_TIME_Absolute	timestamp
	)

Definition at line 95 of file gnunet-service-messenger_subscription.c.

{
  GNUNET_assert (subscription);
 
  if ((GNUNET_TIME_absolute_cmp (timestamp, <, subscription->start)) ||
      (GNUNET_TIME_absolute_cmp (timestamp, >, subscription->end)))
    return GNUNET_NO;
  else
    return GNUNET_YES;
}

References GNUNET_MESSENGER_Subscription::end, GNUNET_assert, GNUNET_NO, GNUNET_TIME_absolute_cmp, GNUNET_YES, GNUNET_MESSENGER_Subscription::start, and timestamp().

Referenced by notify_srv_handle_message().

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update_subscription()

void update_subscription	(	struct GNUNET_MESSENGER_Subscription *	subscription,
		struct GNUNET_TIME_Absolute	timestamp,
		struct GNUNET_TIME_Relative	duration
	)

Definition at line 110 of file gnunet-service-messenger_subscription.c.

{
  struct GNUNET_TIME_Absolute end;
 
  GNUNET_assert (subscription);
 
  end = GNUNET_TIME_absolute_add (timestamp, duration);
 
  if (GNUNET_TIME_absolute_cmp (end, <, subscription->start))
    return;
 
  if (GNUNET_TIME_absolute_cmp (timestamp, <, subscription->start))
    subscription->start = timestamp;
 
  subscription->end = end;
}

References duration, end, GNUNET_MESSENGER_Subscription::end, GNUNET_assert, GNUNET_TIME_absolute_add(), GNUNET_TIME_absolute_cmp, GNUNET_MESSENGER_Subscription::start, and timestamp().

Referenced by handle_message_subscribe().

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task_subscription_exit()

static void task_subscription_exit ( void *  cls )

static

Definition at line 131 of file gnunet-service-messenger_subscription.c.

{
  struct GNUNET_MESSENGER_Subscription *subscription;
  struct GNUNET_MESSENGER_Member *member;
  struct GNUNET_MESSENGER_SrvRoom *room;
  struct GNUNET_ShortHashCode discourse;
 
  GNUNET_assert (cls);
 
  subscription = cls;
  member = subscription->member;
 
  subscription->task = NULL;
 
  if (! member)
    return;
 
  room = subscription->room;
 
  memcpy (&discourse, &(subscription->discourse),
          sizeof (struct GNUNET_ShortHashCode));
 
  remove_member_subscription (member, subscription);
  destroy_subscription (subscription);
 
  cleanup_srv_room_discourse_messages (room, &discourse);
}

References cleanup_srv_room_discourse_messages(), destroy_subscription(), GNUNET_MESSENGER_Subscription::discourse, GNUNET_assert, GNUNET_MESSENGER_Subscription::member, remove_member_subscription(), GNUNET_MESSENGER_Subscription::room, and GNUNET_MESSENGER_Subscription::task.

Referenced by update_subscription_timing().

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update_subscription_timing()

void update_subscription_timing

(

struct GNUNET_MESSENGER_Subscription *

subscription

)

Definition at line 161 of file gnunet-service-messenger_subscription.c.

{
  struct GNUNET_TIME_Absolute current;
  struct GNUNET_TIME_Relative time;
 
  GNUNET_assert (subscription);
 
  current = GNUNET_TIME_absolute_get ();
  time = GNUNET_TIME_absolute_get_difference (current, subscription->end);
 
  if (subscription->task)
    GNUNET_SCHEDULER_cancel (subscription->task);
 
  subscription->task = GNUNET_SCHEDULER_add_delayed (
    time, task_subscription_exit, subscription);
}

References GNUNET_MESSENGER_Subscription::end, GNUNET_assert, GNUNET_SCHEDULER_add_delayed(), GNUNET_SCHEDULER_cancel(), GNUNET_TIME_absolute_get(), GNUNET_TIME_absolute_get_difference(), GNUNET_MESSENGER_Subscription::task, and task_subscription_exit().

Referenced by handle_message_subscribe().

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