func NewLeadershipContext(accessor LeadershipSettingsAccessor, tracker leadership.Tracker) LeadershipContext {
return &leadershipContext{
accessor: accessor,
tracker: tracker,
serviceName: tracker.ServiceName(),
}
}
func assertClaimLeader(c *gc.C, tracker leadership.Tracker, expect bool) {
// Grab a ticket...
ticket := tracker.ClaimLeader()
// ...and check that it gives the expected result every time it's checked.
assertTicket(c, ticket, expect)
assertTicket(c, ticket, expect)
}
func assertWaitMinion(c *gc.C, tracker leadership.Tracker, expect bool) {
ticket := tracker.WaitMinion()
if expect {
assertTicket(c, ticket, false)
assertTicket(c, ticket, false)
return
}
select {
case <-time.After(trackerDuration / 4):
// This wait needs to be small, compared to the resolution we run the
// tests at, so as not to disturb client timing too much.
case <-ticket.Ready():
c.Fatalf("got unexpected readiness: %v", ticket.Wait())
}
}