github.com/projecteru2/core@v0.0.0-20240321043226-06bcc1c23f58/store/etcdv3/meta/ephemeral_test.go (about)

     1  package meta
     2  
     3  import (
     4  	"context"
     5  	"testing"
     6  	"time"
     7  
     8  	"github.com/stretchr/testify/require"
     9  )
    10  
    11  func TestEphemeralDeregister(t *testing.T) {
    12  	m := NewEmbeddedETCD(t)
    13  
    14  	ctx := context.Background()
    15  	path := "/ident"
    16  	heartbeat := time.Millisecond
    17  	expiry, stop, err := m.StartEphemeral(ctx, path, heartbeat)
    18  	require.NoError(t, err)
    19  	require.NotNil(t, stop)
    20  	require.NotNil(t, expiry)
    21  
    22  	kv, err := m.GetOne(ctx, path)
    23  	require.NoError(t, err)
    24  	require.Equal(t, path, string(kv.Key))
    25  
    26  	stop()
    27  	kv, err = m.GetOne(ctx, path)
    28  	require.Error(t, err)
    29  	require.Nil(t, kv)
    30  }
    31  
    32  func TestEphemeral(t *testing.T) {
    33  	m := NewEmbeddedETCD(t)
    34  
    35  	ctx := context.Background()
    36  	path := "/ident"
    37  	heartbeat := time.Millisecond
    38  	expiry, stop, err := m.StartEphemeral(ctx, path, heartbeat)
    39  	require.NoError(t, err)
    40  	require.NotNil(t, stop)
    41  	require.NotNil(t, expiry)
    42  
    43  	kv, err := m.GetOne(ctx, path)
    44  	require.NoError(t, err)
    45  	require.Equal(t, path, string(kv.Key))
    46  
    47  	// Makes sure that the ephemeral keeps alived.
    48  	time.Sleep(heartbeat * 5)
    49  	kv, err = m.GetOne(ctx, path)
    50  	require.NoError(t, err)
    51  	require.Equal(t, path, string(kv.Key))
    52  
    53  	select {
    54  	case <-expiry:
    55  		require.FailNow(t, "unexpected expired")
    56  	default:
    57  	}
    58  
    59  	// Stop and waiting for expiry.
    60  	stop()
    61  	time.Sleep(heartbeat * 5)
    62  	// Ephemeral kv has been removed.
    63  	kv, err = m.GetOne(ctx, path)
    64  	require.Error(t, err) // no such path
    65  	require.Nil(t, kv)
    66  
    67  	select {
    68  	case <-expiry:
    69  	default:
    70  		require.FailNow(t, "expected expired")
    71  	}
    72  }
    73  
    74  func TestEphemeralFailedAsPutAlready(t *testing.T) {
    75  	m := NewEmbeddedETCD(t)
    76  
    77  	ctx := context.Background()
    78  	path := "/ident"
    79  	heartbeat := time.Millisecond
    80  	expiry, stop, err := m.StartEphemeral(ctx, path, heartbeat)
    81  	require.NoError(t, err)
    82  	require.NotNil(t, stop)
    83  	require.NotNil(t, expiry)
    84  
    85  	defer stop()
    86  
    87  	_, _, err = m.StartEphemeral(ctx, path, heartbeat)
    88  	require.Error(t, err)
    89  }
    90  
    91  func TestEphemeralMustRevokeAfterKeepaliveFailed(t *testing.T) {
    92  	m := NewEmbeddedETCD(t)
    93  
    94  	ctx := context.Background()
    95  	path := "/ident"
    96  	expiry, stop, err := m.StartEphemeral(ctx, path, time.Millisecond)
    97  	require.NoError(t, err)
    98  	require.NotNil(t, stop)
    99  	require.NotNil(t, expiry)
   100  
   101  	stop()
   102  	// TODO should reconsider here
   103  	select {
   104  	case <-expiry:
   105  	case <-time.After(time.Second * 8):
   106  		require.FailNow(t, path+" had been removed")
   107  	}
   108  }