package consul import ( "context" "sync/atomic" "testing" "github.com/hashicorp/consul/sdk/testutil" "github.com/hashicorp/consul/sdk/testutil/retry" "github.com/stretchr/testify/require" ) func TestLeaderRoutineManager(t *testing.T) { t.Parallel() var runs uint32 var running uint32 // tlog := testutil.NewCancellableTestLogger(t) // defer tlog.Cancel() mgr := NewLeaderRoutineManager(testutil.Logger(t)) run := func(ctx context.Context) error { atomic.StoreUint32(&running, 1) defer atomic.StoreUint32(&running, 0) atomic.AddUint32(&runs, 1) <-ctx.Done() return nil } // IsRunning on unregistered service should be false require.False(t, mgr.IsRunning("not-found")) // start require.NoError(t, mgr.Start("run", run)) require.True(t, mgr.IsRunning("run")) retry.Run(t, func(r *retry.R) { require.Equal(r, uint32(1), atomic.LoadUint32(&runs)) require.Equal(r, uint32(1), atomic.LoadUint32(&running)) }) require.NoError(t, mgr.Stop("run")) // ensure the background go routine was actually cancelled retry.Run(t, func(r *retry.R) { require.Equal(r, uint32(1), atomic.LoadUint32(&runs)) require.Equal(r, uint32(0), atomic.LoadUint32(&running)) }) // restart and stop require.NoError(t, mgr.Start("run", run)) retry.Run(t, func(r *retry.R) { require.Equal(r, uint32(2), atomic.LoadUint32(&runs)) require.Equal(r, uint32(1), atomic.LoadUint32(&running)) }) require.NoError(t, mgr.Stop("run")) retry.Run(t, func(r *retry.R) { require.Equal(r, uint32(0), atomic.LoadUint32(&running)) }) // start with a context ctx, cancel := context.WithCancel(context.Background()) require.NoError(t, mgr.StartWithContext(ctx, "run", run)) cancel() // The function should exit of its own accord due to the parent // context being canceled retry.Run(t, func(r *retry.R) { require.Equal(r, uint32(3), atomic.LoadUint32(&runs)) require.Equal(r, uint32(0), atomic.LoadUint32(&running)) // the task should automatically set itself to not running if // it exits early require.False(r, mgr.IsRunning("run")) }) }