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SR: Calculate current SRV phase/run duration.

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This is also needed to make the HS desc overlap mode function
independent of absolute hours.
This commit is contained in:
George Kadianakis 2017-07-24 13:30:04 +03:00 committed by Nick Mathewson
parent 2af254096f
commit 0b22b7fce3
3 changed files with 39 additions and 0 deletions
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16
src/or/shared_random_state.c
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@ -176,6 +176,22 @@ sr_state_get_start_time_of_current_protocol_run(time_t now)
return beginning_of_current_round - time_elapsed_since_start_of_run;
}
/** Return the time (in seconds) it takes to complete a full SR protocol phase
* (e.g. the commit phase). */
unsigned int
sr_state_get_phase_duration(void)
{
return SHARED_RANDOM_N_ROUNDS * get_voting_interval();
}
/** Return the time (in seconds) it takes to complete a full SR protocol run */
unsigned int
sr_state_get_protocol_run_duration(void)
{
int total_protocol_rounds = SHARED_RANDOM_N_ROUNDS * SHARED_RANDOM_N_PHASES;
return total_protocol_rounds * get_voting_interval();
}
/* Return the time we should expire the state file created at <b>now</b>.
* We expire the state file in the beginning of the next protocol run. */
STATIC time_t

2
src/or/shared_random_state.h
View File

@ -122,6 +122,8 @@ void sr_state_save(void);
void sr_state_free(void);
time_t sr_state_get_start_time_of_current_protocol_run(time_t now);
unsigned int sr_state_get_phase_duration(void);
unsigned int sr_state_get_protocol_run_duration(void);
#ifdef SHARED_RANDOM_STATE_PRIVATE

21
src/test/test_shared_random.c
View File

@ -260,6 +260,25 @@ test_get_start_time_of_current_run(void *arg)
;
}
static void
test_get_sr_protocol_duration(void *arg)
{
(void) arg;
/* Check that by default an SR phase is 12 hours */
tt_int_op(sr_state_get_phase_duration(), ==, 12*60*60);
tt_int_op(sr_state_get_protocol_run_duration(), ==, 24*60*60);
/* Now alter the voting interval and check that the SR phase is 2 mins long
* if voting happens every 10 seconds (10*12 seconds = 2 mins) */
or_options_t *options = get_options_mutable();
options->V3AuthVotingInterval = 10;
tt_int_op(sr_state_get_phase_duration(), ==, 2*60);
tt_int_op(sr_state_get_protocol_run_duration(), ==, 4*60);
done: ;
}
/* Mock function to immediately return our local 'mock_consensus'. */
static networkstatus_t *
mock_networkstatus_get_live_consensus(time_t now)
@ -1345,6 +1364,8 @@ struct testcase_t sr_tests[] = {
NULL, NULL },
{ "get_start_time_of_current_run", test_get_start_time_of_current_run,
TT_FORK, NULL, NULL },
{ "get_sr_protocol_duration", test_get_sr_protocol_duration, TT_FORK,
NULL, NULL },
{ "get_state_valid_until_time", test_get_state_valid_until_time, TT_FORK,
NULL, NULL },
{ "vote", test_vote, TT_FORK,