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systemctl: print next timer trigger time with the status verb (#6242)

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It is useful to know when a timer will trigger next when looking at a
timer status message so calculate and print that information.

Closes #5738.

Example output:
$ systemctl status dnf-makecache.timer
● dnf-makecache.timer - dnf makecache timer
   Loaded: loaded (/usr/lib/systemd/system/dnf-makecache.timer; enabled; vendor preset: enabled)
   Active: active (waiting) since Tue 2017-07-04 17:24:02 EDT; 24min ago
  Trigger: Tue 2017-07-04 18:15:56 EDT; 27min left
This commit is contained in:
Giedrius Statkevičius 2017-07-05 00:51:02 +03:00 committed by Zbigniew Jędrzejewski-Szmek
parent 218f467111
commit 601b08420d
1 changed files with 31 additions and 0 deletions
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31
src/systemctl/systemctl.c
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@ -3818,6 +3818,8 @@ typedef struct UnitStatusInfo {
bool failed_assert_negate;
const char *failed_assert;
const char *failed_assert_parameter;
usec_t next_elapse_real;
usec_t next_elapse_monotonic;
/* Socket */
unsigned n_accepted;
@ -3987,6 +3989,31 @@ static void print_status_info(
else
printf("\n");
if (endswith(i->id, ".timer")) {
char tstamp1[FORMAT_TIMESTAMP_RELATIVE_MAX],
tstamp2[FORMAT_TIMESTAMP_MAX];
char *next_rel_time, *next_time;
dual_timestamp nw, next = {i->next_elapse_real,
i->next_elapse_monotonic};
usec_t next_elapse;
printf(" Trigger: ");
dual_timestamp_get(&nw);
next_elapse = calc_next_elapse(&nw, &next);
next_rel_time = format_timestamp_relative(tstamp1,
sizeof(tstamp1),
next_elapse);
next_time = format_timestamp(tstamp2,
sizeof(tstamp2),
next_elapse);
if (next_time && next_rel_time)
printf("%s; %s\n", next_time, next_rel_time);
else
printf("n/a\n");
}
if (!i->condition_result && i->condition_timestamp > 0) {
UnitCondition *c;
int n = 0;
@ -4424,6 +4451,10 @@ static int status_property(const char *name, sd_bus_message *m, UnitStatusInfo *
i->tasks_max = u;
else if (streq(name, "CPUUsageNSec"))
i->cpu_usage_nsec = u;
else if (streq(name, "NextElapseUSecMonotonic"))
i->next_elapse_monotonic = u;
else if (streq(name, "NextElapseUSecRealtime"))
i->next_elapse_real = u;
break;
}