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condition: take a timestamp and store last result of conditions

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This commit is contained in:
Lennart Poettering 2011-03-09 23:58:17 +01:00
parent b925e72633
commit 90bbc9469e
5 changed files with 43 additions and 8 deletions
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2
TODO
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@ -26,8 +26,6 @@ Features:
* consider services with no [Install] section and stored in /lib enabled by "systemctl is-enabled"
* store time when conditions where checked to inform admins about whether a unit was considered at all
* consider services with any kind of link in /etc/systemd/system enabled
* show failure error string in "systemctl status"

14
src/dbus-unit.h
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@ -102,6 +102,8 @@
" <property name=\"ControlGroup\" type=\"as\" access=\"read\"/>\n" \
" <property name=\"NeedDaemonReload\" type=\"b\" access=\"read\"/>\n" \
" <property name=\"JobTimeoutUSec\" type=\"t\" access=\"read\"/>\n" \
" <property name=\"ConditionTimestamp\" type=\"t\" access=\"read\"/>\n" \
" <property name=\"ConditionResult\" type=\"b\" access=\"read\"/>\n" \
" </interface>\n"
#define BUS_UNIT_INTERFACES_LIST \
@ -132,10 +134,10 @@
{ "org.freedesktop.systemd1.Unit", "ActiveState", bus_unit_append_active_state, "s", u }, \
{ "org.freedesktop.systemd1.Unit", "SubState", bus_unit_append_sub_state, "s", u }, \
{ "org.freedesktop.systemd1.Unit", "FragmentPath", bus_property_append_string, "s", u->meta.fragment_path }, \
{ "org.freedesktop.systemd1.Unit", "InactiveExitTimestamp",bus_property_append_uint64, "t", &u->meta.inactive_exit_timestamp.realtime }, \
{ "org.freedesktop.systemd1.Unit", "ActiveEnterTimestamp", bus_property_append_uint64, "t", &u->meta.active_enter_timestamp.realtime }, \
{ "org.freedesktop.systemd1.Unit", "ActiveExitTimestamp", bus_property_append_uint64, "t", &u->meta.active_exit_timestamp.realtime }, \
{ "org.freedesktop.systemd1.Unit", "InactiveEnterTimestamp",bus_property_append_uint64, "t", &u->meta.inactive_enter_timestamp.realtime }, \
{ "org.freedesktop.systemd1.Unit", "InactiveExitTimestamp",bus_property_append_usec, "t", &u->meta.inactive_exit_timestamp.realtime }, \
{ "org.freedesktop.systemd1.Unit", "ActiveEnterTimestamp", bus_property_append_usec, "t", &u->meta.active_enter_timestamp.realtime }, \
{ "org.freedesktop.systemd1.Unit", "ActiveExitTimestamp", bus_property_append_usec, "t", &u->meta.active_exit_timestamp.realtime }, \
{ "org.freedesktop.systemd1.Unit", "InactiveEnterTimestamp",bus_property_append_usec, "t", &u->meta.inactive_enter_timestamp.realtime }, \
{ "org.freedesktop.systemd1.Unit", "CanStart", bus_unit_append_can_start, "b", u }, \
{ "org.freedesktop.systemd1.Unit", "CanStop", bus_unit_append_can_stop, "b", u }, \
{ "org.freedesktop.systemd1.Unit", "CanReload", bus_unit_append_can_reload, "b", u }, \
@ -149,7 +151,9 @@
{ "org.freedesktop.systemd1.Unit", "DefaultControlGroup", bus_unit_append_default_cgroup, "s", u }, \
{ "org.freedesktop.systemd1.Unit", "ControlGroup", bus_unit_append_cgroups, "as", u }, \
{ "org.freedesktop.systemd1.Unit", "NeedDaemonReload", bus_unit_append_need_daemon_reload, "b", u }, \
{ "org.freedesktop.systemd1.Unit", "JobTimeoutUSec", bus_property_append_usec, "t", &u->meta.job_timeout }
{ "org.freedesktop.systemd1.Unit", "JobTimeoutUSec", bus_property_append_usec, "t", &u->meta.job_timeout }, \
{ "org.freedesktop.systemd1.Unit", "ConditionTimestamp", bus_property_append_usec, "t", &u->meta.condition_timestamp.realtime }, \
{ "org.freedesktop.systemd1.Unit", "ConditionResult", bus_property_append_bool, "b", &u->meta.condition_result }
int bus_unit_append_names(Manager *m, DBusMessageIter *i, const char *property, void *data);
int bus_unit_append_following(Manager *m, DBusMessageIter *i, const char *property, void *data);

17
src/systemctl.c
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@ -1831,6 +1831,9 @@ typedef struct UnitStatusInfo {
int exit_code, exit_status;
usec_t condition_timestamp;
bool condition_result;
/* Socket */
unsigned n_accepted;
unsigned n_connections;
@ -1922,6 +1925,16 @@ static void print_status_info(UnitStatusInfo *i) {
else
printf("\n");
if (!i->condition_result && i->condition_timestamp > 0) {
s1 = format_timestamp_pretty(since1, sizeof(since1), i->condition_timestamp);
s2 = format_timestamp(since2, sizeof(since2), i->condition_timestamp);
if (s1)
printf("\t start condition failed at %s; %s\n", s2, s1);
else if (s2)
printf("\t start condition failed at %s\n", s2);
}
if (i->sysfs_path)
printf("\t Device: %s\n", i->sysfs_path);
if (i->where)
@ -2117,6 +2130,8 @@ static int status_property(const char *name, DBusMessageIter *iter, UnitStatusIn
i->accept = b;
else if (streq(name, "NeedDaemonReload"))
i->need_daemon_reload = b;
else if (streq(name, "ConditionResult"))
i->condition_result = b;
break;
}
@ -2174,6 +2189,8 @@ static int status_property(const char *name, DBusMessageIter *iter, UnitStatusIn
i->inactive_exit_timestamp = (usec_t) u;
else if (streq(name, "ActiveExitTimestamp"))
i->active_exit_timestamp = (usec_t) u;
else if (streq(name, "ConditionTimestamp"))
i->condition_timestamp = (usec_t) u;
break;
}

11
src/unit.c
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@ -825,6 +825,15 @@ fail:
return r;
}
bool unit_condition_test(Unit *u) {
assert(u);
dual_timestamp_get(&u->meta.condition_timestamp);
u->meta.condition_result = condition_test_list(u->meta.conditions);
return u->meta.condition_result;
}
/* Errors:
* -EBADR: This unit type does not support starting.
* -EALREADY: Unit is already started.
@ -849,7 +858,7 @@ int unit_start(Unit *u) {
return -EALREADY;
/* If the conditions failed, don't do anything at all */
if (!condition_test_list(u->meta.conditions)) {
if (!unit_condition_test(u)) {
log_debug("Starting of %s requested but condition failed. Ignoring.", u->meta.id);
return -EALREADY;
}

7
src/unit.h
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@ -160,6 +160,8 @@ struct Meta {
/* Conditions to check */
LIST_HEAD(Condition, conditions);
dual_timestamp condition_timestamp;
dual_timestamp inactive_exit_timestamp;
dual_timestamp active_enter_timestamp;
dual_timestamp active_exit_timestamp;
@ -208,6 +210,9 @@ struct Meta {
/* Allow isolation requests */
bool allow_isolate;
/* Did the last condition check suceed? */
bool condition_result;
bool in_load_queue:1;
bool in_dbus_queue:1;
bool in_cleanup_queue:1;
@ -513,6 +518,8 @@ bool unit_name_is_valid(const char *n, bool template_ok);
void unit_trigger_on_failure(Unit *u);
bool unit_condition_test(Unit *u);
const char *unit_load_state_to_string(UnitLoadState i);
UnitLoadState unit_load_state_from_string(const char *s);