github.com/awesome-flow/flow@v0.0.3-0.20190918184116-508d75d68a2c/pkg/corev1alpha1/actor/buffer_test.go (about)

     1  package actor
     2  
     3  import (
     4  	"reflect"
     5  	"sync"
     6  	"testing"
     7  
     8  	core "github.com/awesome-flow/flow/pkg/corev1alpha1"
     9  	coretest "github.com/awesome-flow/flow/pkg/corev1alpha1/test"
    10  	"github.com/awesome-flow/flow/pkg/types"
    11  	"github.com/awesome-flow/flow/pkg/util"
    12  	testutil "github.com/awesome-flow/flow/pkg/util/test"
    13  	flowtest "github.com/awesome-flow/flow/pkg/util/test/corev1alpha1"
    14  )
    15  
    16  func TestBufferRetry(t *testing.T) {
    17  	tests := []struct {
    18  		name      string
    19  		counts    []uint32
    20  		statuses  []core.MsgStatus
    21  		expcnt    int
    22  		expstatus core.MsgStatus
    23  	}{
    24  		{
    25  			name:      "instant done",
    26  			counts:    []uint32{0},
    27  			statuses:  []core.MsgStatus{core.MsgStatusDone},
    28  			expcnt:    1,
    29  			expstatus: core.MsgStatusDone,
    30  		},
    31  		{
    32  			name:      "partial send",
    33  			counts:    []uint32{0},
    34  			statuses:  []core.MsgStatus{core.MsgStatusPartialSend},
    35  			expcnt:    1,
    36  			expstatus: core.MsgStatusPartialSend,
    37  		},
    38  		{
    39  			name:      "fail first and done",
    40  			counts:    []uint32{0, 1},
    41  			statuses:  []core.MsgStatus{core.MsgStatusFailed, core.MsgStatusDone},
    42  			expcnt:    2,
    43  			expstatus: core.MsgStatusDone,
    44  		},
    45  		{
    46  			name:      "fails maxAttempts-1 times",
    47  			counts:    []uint32{0, DefaultBufMaxAttempts - 1},
    48  			statuses:  []core.MsgStatus{core.MsgStatusFailed, core.MsgStatusDone},
    49  			expcnt:    DefaultBufMaxAttempts,
    50  			expstatus: core.MsgStatusDone,
    51  		},
    52  		{
    53  			name:      "fails maxAttempts times",
    54  			counts:    []uint32{0, DefaultBufMaxAttempts},
    55  			statuses:  []core.MsgStatus{core.MsgStatusFailed, core.MsgStatusDone},
    56  			expcnt:    DefaultBufMaxAttempts,
    57  			expstatus: core.MsgStatusFailed,
    58  		},
    59  	}
    60  
    61  	t.Parallel()
    62  
    63  	for _, testCase := range tests {
    64  		t.Run(testCase.name, func(t *testing.T) {
    65  			ctx, err := coretest.NewContextWithConfig(map[string]interface{}{"system.maxprocs": 1 + testutil.RandInt(4)})
    66  			if err != nil {
    67  				t.Fatalf("failed to create a context: %s", err)
    68  			}
    69  			if err := ctx.Start(); err != nil {
    70  				t.Fatalf("failed to start context: %s", err)
    71  			}
    72  			defer ctx.Stop()
    73  
    74  			buf, err := NewBuffer("buffer", ctx, core.Params(nil))
    75  			if err != nil {
    76  				t.Fatalf("failed to create a new buffer: %s", err)
    77  			}
    78  			act, err := flowtest.NewTestActor("test-actor", ctx, core.Params(nil))
    79  			if err != nil {
    80  				t.Fatalf("failed to create a new test actor: %s", err)
    81  			}
    82  			nthreads, ok := ctx.Config().Get(types.NewKey("system.maxprocs"))
    83  			if !ok {
    84  				t.Fatalf("failed to fetch `system.maxprocs` config")
    85  			}
    86  			if err := buf.Connect(nthreads.(int), act); err != nil {
    87  				t.Fatalf("failed to connect test actor to buf: %s", err)
    88  			}
    89  
    90  			mailbox := make(chan *core.Message, testCase.expcnt)
    91  			defer close(mailbox)
    92  
    93  			var cnt uint32
    94  			var lock sync.Mutex
    95  			act.(*flowtest.TestActor).OnReceive(func(msg *core.Message) {
    96  				lock.Lock()
    97  				defer lock.Unlock()
    98  				act.(*flowtest.TestActor).Flush()
    99  				mailbox <- msg
   100  				var lastix int
   101  				for ix, v := range testCase.counts {
   102  					if v > cnt {
   103  						break
   104  					}
   105  					lastix = ix
   106  				}
   107  				msg.Complete(testCase.statuses[lastix])
   108  				cnt++
   109  			})
   110  
   111  			if err := util.ExecEnsure(
   112  				act.Start,
   113  				buf.Start,
   114  			); err != nil {
   115  				t.Fatalf("failed to start actor: %s", err)
   116  			}
   117  
   118  			defer util.ExecEnsure(
   119  				buf.Stop,
   120  				act.Stop,
   121  			)
   122  
   123  			msg := core.NewMessage(testutil.RandBytes(1024))
   124  			if err := buf.Receive(msg); err != nil {
   125  				t.Fatalf("buffer failed to receive a message: %s", err)
   126  			}
   127  
   128  			status := msg.Await()
   129  			if status != testCase.expstatus {
   130  				t.Fatalf("unexpected status: got: %d, want: %d", status, testCase.expstatus)
   131  			}
   132  
   133  			if len(mailbox) != testCase.expcnt {
   134  				t.Fatalf("unexpected length of the mailbox: got: %d, want: %d", len(mailbox), testCase.expcnt)
   135  			}
   136  
   137  			for i := 0; i < testCase.expcnt; i++ {
   138  				rcvmsg := <-mailbox
   139  				if !reflect.DeepEqual(rcvmsg.Body(), msg.Body()) {
   140  					t.Fatalf("unexpected contents of the mailbox: got: %+v, want: %+v", rcvmsg, msg)
   141  				}
   142  			}
   143  		})
   144  	}
   145  }