Beispiel #1
0
func TestFSM_KVSCheckAndSet(t *testing.T) {
	path, err := ioutil.TempDir("", "fsm")
	if err != nil {
		t.Fatalf("err: %v", err)
	}
	fsm, err := NewFSM(nil, path, os.Stderr)
	if err != nil {
		t.Fatalf("err: %v", err)
	}
	defer fsm.Close()

	req := structs.KVSRequest{
		Datacenter: "dc1",
		Op:         structs.KVSSet,
		DirEnt: structs.DirEntry{
			Key:   "/test/path",
			Flags: 0,
			Value: []byte("test"),
		},
	}
	buf, err := structs.Encode(structs.KVSRequestType, req)
	if err != nil {
		t.Fatalf("err: %v", err)
	}
	resp := fsm.Apply(makeLog(buf))
	if resp != nil {
		t.Fatalf("resp: %v", resp)
	}

	// Verify key is set
	_, d, err := fsm.state.KVSGet("/test/path")
	if err != nil {
		t.Fatalf("err: %v", err)
	}
	if d == nil {
		t.Fatalf("key missing")
	}

	// Run the check-and-set
	req.Op = structs.KVSCAS
	req.DirEnt.ModifyIndex = d.ModifyIndex
	req.DirEnt.Value = []byte("zip")
	buf, err = structs.Encode(structs.KVSRequestType, req)
	if err != nil {
		t.Fatalf("err: %v", err)
	}
	resp = fsm.Apply(makeLog(buf))
	if resp.(bool) != true {
		t.Fatalf("resp: %v", resp)
	}

	// Verify key is updated
	_, d, err = fsm.state.KVSGet("/test/path")
	if err != nil {
		t.Fatalf("err: %v", err)
	}
	if string(d.Value) != "zip" {
		t.Fatalf("bad: %v", d)
	}
}
func TestKVS_Apply(t *testing.T) {
	dir1, s1 := testServer(t)
	defer os.RemoveAll(dir1)
	defer s1.Shutdown()
	client := rpcClient(t, s1)
	defer client.Close()

	testutil.WaitForLeader(t, client.Call, "dc1")

	arg := structs.KVSRequest{
		Datacenter: "dc1",
		Op:         structs.KVSSet,
		DirEnt: structs.DirEntry{
			Key:   "test",
			Flags: 42,
			Value: []byte("test"),
		},
	}
	var out bool
	if err := client.Call("KVS.Apply", &arg, &out); err != nil {
		t.Fatalf("err: %v", err)
	}

	// Verify
	state := s1.fsm.State()
	_, d, err := state.KVSGet("test")
	if err != nil {
		t.Fatalf("err: %v", err)
	}
	if d == nil {
		t.Fatalf("should not be nil")
	}

	// Do a check and set
	arg.Op = structs.KVSCAS
	arg.DirEnt.ModifyIndex = d.ModifyIndex
	arg.DirEnt.Flags = 43
	if err := client.Call("KVS.Apply", &arg, &out); err != nil {
		t.Fatalf("err: %v", err)
	}

	// Check this was applied
	if out != true {
		t.Fatalf("bad: %v", out)
	}

	// Verify
	_, d, err = state.KVSGet("test")
	if err != nil {
		t.Fatalf("err: %v", err)
	}
	if d.Flags != 43 {
		t.Fatalf("bad: %v", d)
	}
}
Beispiel #3
0
// KVSPut handles a DELETE request
func (s *HTTPServer) KVSDelete(resp http.ResponseWriter, req *http.Request, args *structs.KeyRequest) (interface{}, error) {
	applyReq := structs.KVSRequest{
		Datacenter: args.Datacenter,
		Op:         structs.KVSDelete,
		DirEnt: structs.DirEntry{
			Key: args.Key,
		},
	}
	applyReq.Token = args.Token

	// Check for recurse
	params := req.URL.Query()
	if _, ok := params["recurse"]; ok {
		applyReq.Op = structs.KVSDeleteTree
	} else if missingKey(resp, args) {
		return nil, nil
	}

	// Check for cas value
	if _, ok := params["cas"]; ok {
		casVal, err := strconv.ParseUint(params.Get("cas"), 10, 64)
		if err != nil {
			return nil, err
		}
		applyReq.DirEnt.ModifyIndex = casVal
		applyReq.Op = structs.KVSDeleteCAS
	}

	// Make the RPC
	var out bool
	if err := s.agent.RPC("KVS.Apply", &applyReq, &out); err != nil {
		return nil, err
	}

	// Only use the out value if this was a CAS
	if applyReq.Op == structs.KVSDeleteCAS {
		return out, nil
	} else {
		return true, nil
	}
}
Beispiel #4
0
func TestFSM_KVSDeleteTree(t *testing.T) {
	path, err := ioutil.TempDir("", "fsm")
	if err != nil {
		t.Fatalf("err: %v", err)
	}
	fsm, err := NewFSM(nil, path, os.Stderr)
	if err != nil {
		t.Fatalf("err: %v", err)
	}
	defer fsm.Close()

	req := structs.KVSRequest{
		Datacenter: "dc1",
		Op:         structs.KVSSet,
		DirEnt: structs.DirEntry{
			Key:   "/test/path",
			Flags: 0,
			Value: []byte("test"),
		},
	}
	buf, err := structs.Encode(structs.KVSRequestType, req)
	if err != nil {
		t.Fatalf("err: %v", err)
	}
	resp := fsm.Apply(makeLog(buf))
	if resp != nil {
		t.Fatalf("resp: %v", resp)
	}

	// Run the delete tree
	req.Op = structs.KVSDeleteTree
	req.DirEnt.Key = "/test"
	buf, err = structs.Encode(structs.KVSRequestType, req)
	if err != nil {
		t.Fatalf("err: %v", err)
	}
	resp = fsm.Apply(makeLog(buf))
	if resp != nil {
		t.Fatalf("resp: %v", resp)
	}

	// Verify key is not set
	_, d, err := fsm.state.KVSGet("/test/path")
	if err != nil {
		t.Fatalf("err: %v", err)
	}
	if d != nil {
		t.Fatalf("key present")
	}
}
Beispiel #5
0
func TestLeader_ReapTombstones(t *testing.T) {
	dir1, s1 := testServerWithConfig(t, func(c *Config) {
		c.TombstoneTTL = 50 * time.Millisecond
		c.TombstoneTTLGranularity = 10 * time.Millisecond
	})
	defer os.RemoveAll(dir1)
	defer s1.Shutdown()

	client := rpcClient(t, s1)
	testutil.WaitForLeader(t, client.Call, "dc1")

	// Create a KV entry
	arg := structs.KVSRequest{
		Datacenter: "dc1",
		Op:         structs.KVSSet,
		DirEnt: structs.DirEntry{
			Key:   "test",
			Value: []byte("test"),
		},
	}
	var out bool
	if err := client.Call("KVS.Apply", &arg, &out); err != nil {
		t.Fatalf("err: %v", err)
	}

	// Delete the KV entry (tombstoned)
	arg.Op = structs.KVSDelete
	if err := client.Call("KVS.Apply", &arg, &out); err != nil {
		t.Fatalf("err: %v", err)
	}

	// Ensure we have a tombstone
	_, res, err := s1.fsm.State().tombstoneTable.Get("id")
	if err != nil {
		t.Fatalf("err: %v", err)
	}
	if len(res) == 0 {
		t.Fatalf("missing tombstones")
	}

	// Check that the new leader has a pending GC expiration
	testutil.WaitForResult(func() (bool, error) {
		_, res, err := s1.fsm.State().tombstoneTable.Get("id")
		return len(res) == 0, err
	}, func(err error) {
		t.Fatalf("err: %v", err)
	})
}
Beispiel #6
0
// KVSPut handles a PUT request
func (s *HTTPServer) KVSPut(resp http.ResponseWriter, req *http.Request, args *structs.KeyRequest) (interface{}, error) {
	if missingKey(resp, args) {
		return nil, nil
	}
	applyReq := structs.KVSRequest{
		Datacenter: args.Datacenter,
		Op:         structs.KVSSet,
		DirEnt: structs.DirEntry{
			Key:   args.Key,
			Flags: 0,
			Value: nil,
		},
	}
	applyReq.Token = args.Token

	// Check for flags
	params := req.URL.Query()
	if _, ok := params["flags"]; ok {
		flagVal, err := strconv.ParseUint(params.Get("flags"), 10, 64)
		if err != nil {
			return nil, err
		}
		applyReq.DirEnt.Flags = flagVal
	}

	// Check for cas value
	if _, ok := params["cas"]; ok {
		casVal, err := strconv.ParseUint(params.Get("cas"), 10, 64)
		if err != nil {
			return nil, err
		}
		applyReq.DirEnt.ModifyIndex = casVal
		applyReq.Op = structs.KVSCAS
	}

	// Check for lock acquisition
	if _, ok := params["acquire"]; ok {
		applyReq.DirEnt.Session = params.Get("acquire")
		applyReq.Op = structs.KVSLock
	}

	// Check for lock release
	if _, ok := params["release"]; ok {
		applyReq.DirEnt.Session = params.Get("release")
		applyReq.Op = structs.KVSUnlock
	}

	// Check the content-length
	if req.ContentLength > maxKVSize {
		resp.WriteHeader(413)
		resp.Write([]byte(fmt.Sprintf("Value exceeds %d byte limit", maxKVSize)))
		return nil, nil
	}

	// Copy the value
	buf := bytes.NewBuffer(nil)
	if _, err := io.Copy(buf, req.Body); err != nil {
		return nil, err
	}
	applyReq.DirEnt.Value = buf.Bytes()

	// Make the RPC
	var out bool
	if err := s.agent.RPC("KVS.Apply", &applyReq, &out); err != nil {
		return nil, err
	}

	// Only use the out value if this was a CAS
	if applyReq.Op == structs.KVSSet {
		return true, nil
	} else {
		return out, nil
	}
}