func TestKVSEndpoint_List_Blocking(t *testing.T) {
dir1, s1 := testServer(t)
defer os.RemoveAll(dir1)
defer s1.Shutdown()
codec := rpcClient(t, s1)
defer codec.Close()
testutil.WaitForLeader(t, s1.RPC, "dc1")
keys := []string{
"/test/key1",
"/test/key2",
"/test/sub/key3",
}
for _, key := range keys {
arg := structs.KVSRequest{
Datacenter: "dc1",
Op: structs.KVSSet,
DirEnt: structs.DirEntry{
Key: key,
Flags: 1,
},
}
var out bool
if err := msgpackrpc.CallWithCodec(codec, "KVS.Apply", &arg, &out); err != nil {
t.Fatalf("err: %v", err)
}
}
getR := structs.KeyRequest{
Datacenter: "dc1",
Key: "/test",
}
var dirent structs.IndexedDirEntries
if err := msgpackrpc.CallWithCodec(codec, "KVS.List", &getR, &dirent); err != nil {
t.Fatalf("err: %v", err)
}
// Setup a blocking query
getR.MinQueryIndex = dirent.Index
getR.MaxQueryTime = time.Second
// Async cause a change
start := time.Now()
go func() {
time.Sleep(100 * time.Millisecond)
codec := rpcClient(t, s1)
defer codec.Close()
arg := structs.KVSRequest{
Datacenter: "dc1",
Op: structs.KVSDelete,
DirEnt: structs.DirEntry{
Key: "/test/sub/key3",
},
}
var out bool
if err := msgpackrpc.CallWithCodec(codec, "KVS.Apply", &arg, &out); err != nil {
t.Fatalf("err: %v", err)
}
}()
// Re-run the query
dirent = structs.IndexedDirEntries{}
if err := msgpackrpc.CallWithCodec(codec, "KVS.List", &getR, &dirent); err != nil {
t.Fatalf("err: %v", err)
}
// Should block at least 100ms
if time.Now().Sub(start) < 100*time.Millisecond {
t.Fatalf("too fast")
}
if dirent.Index == 0 {
t.Fatalf("Bad: %v", dirent)
}
if len(dirent.Entries) != 2 {
for _, ent := range dirent.Entries {
t.Errorf("Bad: %#v", *ent)
}
}
for i := 0; i < len(dirent.Entries); i++ {
d := dirent.Entries[i]
if d.Key != keys[i] {
t.Fatalf("bad: %v", d)
}
if d.Flags != 1 {
t.Fatalf("bad: %v", d)
}
if d.Value != nil {
t.Fatalf("bad: %v", d)
}
}
}
