Golang Server.GetKeyspaces方法代码示例

// CopyKeyspaces will create the keyspaces in the destination topo
func CopyKeyspaces(fromTS, toTS topo.Server) {
	keyspaces, err := fromTS.GetKeyspaces()
	if err != nil {
		log.Fatalf("GetKeyspaces: %v", err)
	}

	wg := sync.WaitGroup{}
	rec := concurrency.AllErrorRecorder{}
	for _, keyspace := range keyspaces {
		wg.Add(1)
		go func(keyspace string) {
			defer wg.Done()

			k, err := fromTS.GetKeyspace(keyspace)
			if err != nil {
				rec.RecordError(fmt.Errorf("GetKeyspace(%v): %v", keyspace, err))
				return
			}

			if err := toTS.CreateKeyspace(keyspace, k.Keyspace); err != nil {
				if err == topo.ErrNodeExists {
					log.Warningf("keyspace %v already exists", keyspace)
				} else {
					rec.RecordError(fmt.Errorf("CreateKeyspace(%v): %v", keyspace, err))
				}
			}
		}(keyspace)
	}
	wg.Wait()
	if rec.HasErrors() {
		log.Fatalf("copyKeyspaces failed: %v", rec.Error())
	}
}

// CopyShards will create the shards in the destination topo
func CopyShards(fromTS, toTS topo.Server, deleteKeyspaceShards bool) {
	keyspaces, err := fromTS.GetKeyspaces()
	if err != nil {
		log.Fatalf("fromTS.GetKeyspaces: %v", err)
	}

	wg := sync.WaitGroup{}
	rec := concurrency.AllErrorRecorder{}
	for _, keyspace := range keyspaces {
		wg.Add(1)
		go func(keyspace string) {
			defer wg.Done()
			shards, err := fromTS.GetShardNames(keyspace)
			if err != nil {
				rec.RecordError(fmt.Errorf("GetShardNames(%v): %v", keyspace, err))
				return
			}

			if deleteKeyspaceShards {
				if err := toTS.DeleteKeyspaceShards(keyspace); err != nil {
					rec.RecordError(fmt.Errorf("DeleteKeyspaceShards(%v): %v", keyspace, err))
					return
				}
			}

			for _, shard := range shards {
				wg.Add(1)
				go func(keyspace, shard string) {
					defer wg.Done()
					if err := topo.CreateShard(toTS, keyspace, shard); err != nil {
						if err == topo.ErrNodeExists {
							log.Warningf("shard %v/%v already exists", keyspace, shard)
						} else {
							rec.RecordError(fmt.Errorf("CreateShard(%v, %v): %v", keyspace, shard, err))
							return
						}
					}

					si, err := fromTS.GetShard(keyspace, shard)
					if err != nil {
						rec.RecordError(fmt.Errorf("GetShard(%v, %v): %v", keyspace, shard, err))
						return
					}

					if err := toTS.UpdateShard(si); err != nil {
						rec.RecordError(fmt.Errorf("UpdateShard(%v, %v): %v", keyspace, shard, err))
					}
				}(keyspace, shard)
			}
		}(keyspace)
	}
	wg.Wait()
	if rec.HasErrors() {
		log.Fatalf("copyShards failed: %v", rec.Error())
	}
}

func newKeyspacesCache(ts topo.Server) *VersionedObjectCache {
	return NewVersionedObjectCache(func(ctx context.Context) (VersionedObject, error) {
		keyspaces, err := ts.GetKeyspaces(ctx)
		if err != nil {
			return nil, err
		}
		return &Keyspaces{
			Keyspaces: keyspaces,
		}, nil
	})
}

// CopyShardReplications will create the ShardReplication objects in
// the destination topo
func CopyShardReplications(ctx context.Context, fromTS, toTS topo.Server) {
	keyspaces, err := fromTS.GetKeyspaces(ctx)
	if err != nil {
		log.Fatalf("fromTS.GetKeyspaces: %v", err)
	}

	wg := sync.WaitGroup{}
	rec := concurrency.AllErrorRecorder{}
	for _, keyspace := range keyspaces {
		wg.Add(1)
		go func(keyspace string) {
			defer wg.Done()
			shards, err := fromTS.GetShardNames(ctx, keyspace)
			if err != nil {
				rec.RecordError(fmt.Errorf("GetShardNames(%v): %v", keyspace, err))
				return
			}

			for _, shard := range shards {
				wg.Add(1)
				go func(keyspace, shard string) {
					defer wg.Done()

					// read the source shard to get the cells
					si, err := fromTS.GetShard(ctx, keyspace, shard)
					if err != nil {
						rec.RecordError(fmt.Errorf("GetShard(%v, %v): %v", keyspace, shard, err))
						return
					}

					for _, cell := range si.Cells {
						sri, err := fromTS.GetShardReplication(ctx, cell, keyspace, shard)
						if err != nil {
							rec.RecordError(fmt.Errorf("GetShardReplication(%v, %v, %v): %v", cell, keyspace, shard, err))
							continue
						}

						if err := toTS.UpdateShardReplicationFields(ctx, cell, keyspace, shard, func(oldSR *pb.ShardReplication) error {
							*oldSR = *sri.ShardReplication
							return nil
						}); err != nil {
							rec.RecordError(fmt.Errorf("UpdateShardReplicationFields(%v, %v, %v): %v", cell, keyspace, shard, err))
						}
					}
				}(keyspace, shard)
			}
		}(keyspace)
	}
	wg.Wait()
	if rec.HasErrors() {
		log.Fatalf("copyShards failed: %v", rec.Error())
	}
}

// Audit is part of the Validator interface.
func (kv *KeyspaceValidator) Audit(ctx context.Context, ts topo.Server, w *Workflow) error {
	keyspaces, err := ts.GetKeyspaces(ctx)
	if err != nil {
		return err
	}

	for _, keyspace := range keyspaces {
		_, err := ts.GetKeyspace(ctx, keyspace)
		if err != nil {
			w.AddFixer(keyspace, fmt.Sprintf("Error: %v", err), &KeyspaceFixer{
				ts:       ts,
				keyspace: keyspace,
			}, []string{"Create", "Delete"})
		}
	}
	return nil
}

func CheckKeyspace(t *testing.T, ts topo.Server) {
	keyspaces, err := ts.GetKeyspaces()
	if err != nil {
		t.Errorf("GetKeyspaces(empty): %v", err)
	}
	if len(keyspaces) != 0 {
		t.Errorf("len(GetKeyspaces()) != 0: %v", keyspaces)
	}

	if err := ts.CreateKeyspace("test_keyspace"); err != nil {
		t.Errorf("CreateKeyspace: %v", err)
	}
	if err := ts.CreateKeyspace("test_keyspace"); err != topo.ErrNodeExists {
		t.Errorf("CreateKeyspace(again) is not ErrNodeExists: %v", err)
	}

	keyspaces, err = ts.GetKeyspaces()
	if err != nil {
		t.Errorf("GetKeyspaces: %v", err)
	}
	if len(keyspaces) != 1 || keyspaces[0] != "test_keyspace" {
		t.Errorf("GetKeyspaces: want %v, got %v", []string{"test_keyspace"}, keyspaces)
	}

	if err := ts.CreateKeyspace("test_keyspace2"); err != nil {
		t.Errorf("CreateKeyspace: %v", err)
	}
	keyspaces, err = ts.GetKeyspaces()
	if err != nil {
		t.Errorf("GetKeyspaces: %v", err)
	}
	if len(keyspaces) != 2 || keyspaces[0] != "test_keyspace" || keyspaces[1] != "test_keyspace2" {
		t.Errorf("GetKeyspaces: want %v, got %v", []string{"test_keyspace", "test_keyspace2"}, keyspaces)
	}
}

// Audit is part of the Validator interface.
func (kv *ShardValidator) Audit(ctx context.Context, ts topo.Server, w *Workflow) error {
	keyspaces, err := ts.GetKeyspaces(ctx)
	if err != nil {
		return err
	}

	for _, keyspace := range keyspaces {
		shards, err := ts.GetShardNames(ctx, keyspace)
		if err != nil {
			return err
		}
		for _, shard := range shards {
			_, err := ts.GetShard(ctx, keyspace, shard)
			if err != nil {
				w.AddFixer(fmt.Sprintf("%v/%v", keyspace, shard), fmt.Sprintf("Error: %v", err), &ShardFixer{
					ts:       ts,
					keyspace: keyspace,
					shard:    shard,
				}, []string{"Create", "Delete"})
			}
		}
	}
	return nil
}

// CheckKeyspace tests the keyspace part of the API
func CheckKeyspace(ctx context.Context, t *testing.T, ts topo.Server) {
	keyspaces, err := ts.GetKeyspaces(ctx)
	if err != nil {
		t.Errorf("GetKeyspaces(empty): %v", err)
	}
	if len(keyspaces) != 0 {
		t.Errorf("len(GetKeyspaces()) != 0: %v", keyspaces)
	}

	if err := ts.CreateKeyspace(ctx, "test_keyspace", &topo.Keyspace{}); err != nil {
		t.Errorf("CreateKeyspace: %v", err)
	}
	if err := ts.CreateKeyspace(ctx, "test_keyspace", &topo.Keyspace{}); err != topo.ErrNodeExists {
		t.Errorf("CreateKeyspace(again) is not ErrNodeExists: %v", err)
	}

	// Delete and re-create.
	if err := ts.DeleteKeyspace(ctx, "test_keyspace"); err != nil {
		t.Errorf("DeleteKeyspace: %v", err)
	}
	if err := ts.CreateKeyspace(ctx, "test_keyspace", &topo.Keyspace{}); err != nil {
		t.Errorf("CreateKeyspace: %v", err)
	}

	keyspaces, err = ts.GetKeyspaces(ctx)
	if err != nil {
		t.Errorf("GetKeyspaces: %v", err)
	}
	if len(keyspaces) != 1 || keyspaces[0] != "test_keyspace" {
		t.Errorf("GetKeyspaces: want %v, got %v", []string{"test_keyspace"}, keyspaces)
	}

	k := &topo.Keyspace{
		ShardingColumnName: "user_id",
		ShardingColumnType: key.KIT_UINT64,
		ServedFromMap: map[topo.TabletType]*topo.KeyspaceServedFrom{
			topo.TYPE_REPLICA: &topo.KeyspaceServedFrom{
				Cells:    []string{"c1", "c2"},
				Keyspace: "test_keyspace3",
			},
			topo.TYPE_MASTER: &topo.KeyspaceServedFrom{
				Cells:    nil,
				Keyspace: "test_keyspace3",
			},
		},
		SplitShardCount: 64,
	}
	if err := ts.CreateKeyspace(ctx, "test_keyspace2", k); err != nil {
		t.Errorf("CreateKeyspace: %v", err)
	}
	keyspaces, err = ts.GetKeyspaces(ctx)
	if err != nil {
		t.Errorf("GetKeyspaces: %v", err)
	}
	if len(keyspaces) != 2 ||
		keyspaces[0] != "test_keyspace" ||
		keyspaces[1] != "test_keyspace2" {
		t.Errorf("GetKeyspaces: want %v, got %v", []string{"test_keyspace", "test_keyspace2"}, keyspaces)
	}

	// Call delete shards and make sure the keyspace still exists.
	if err := ts.DeleteKeyspaceShards(ctx, "test_keyspace2"); err != nil {
		t.Errorf("DeleteKeyspaceShards: %v", err)
	}
	ki, err := ts.GetKeyspace(ctx, "test_keyspace2")
	if err != nil {
		t.Fatalf("GetKeyspace: %v", err)
	}
	if !reflect.DeepEqual(ki.Keyspace, k) {
		t.Fatalf("returned keyspace doesn't match: got %v expected %v", ki.Keyspace, k)
	}

	ki.ShardingColumnName = "other_id"
	ki.ShardingColumnType = key.KIT_BYTES
	delete(ki.ServedFromMap, topo.TYPE_MASTER)
	ki.ServedFromMap[topo.TYPE_REPLICA].Keyspace = "test_keyspace4"
	err = topo.UpdateKeyspace(ctx, ts, ki)
	if err != nil {
		t.Fatalf("UpdateKeyspace: %v", err)
	}
	ki, err = ts.GetKeyspace(ctx, "test_keyspace2")
	if err != nil {
		t.Fatalf("GetKeyspace: %v", err)
	}
	if ki.ShardingColumnName != "other_id" ||
		ki.ShardingColumnType != key.KIT_BYTES ||
		ki.ServedFromMap[topo.TYPE_REPLICA].Keyspace != "test_keyspace4" {
		t.Errorf("GetKeyspace: unexpected keyspace, got %v", *ki)
	}
}

func initAPI(ctx context.Context, ts topo.Server, actions *ActionRepository) {
	tabletHealthCache := newTabletHealthCache(ts)

	// Cells
	handleCollection("cells", func(r *http.Request) (interface{}, error) {
		if getItemPath(r.URL.Path) != "" {
			return nil, errors.New("cells can only be listed, not retrieved")
		}
		return ts.GetKnownCells(ctx)
	})

	// Keyspaces
	handleCollection("keyspaces", func(r *http.Request) (interface{}, error) {
		keyspace := getItemPath(r.URL.Path)

		// List all keyspaces.
		if keyspace == "" {
			return ts.GetKeyspaces(ctx)
		}

		// Perform an action on a keyspace.
		if r.Method == "POST" {
			if err := r.ParseForm(); err != nil {
				return nil, err
			}
			action := r.FormValue("action")
			if action == "" {
				return nil, errors.New("must specify action")
			}
			return actions.ApplyKeyspaceAction(ctx, action, keyspace, r), nil
		}

		// Get the keyspace record.
		return ts.GetKeyspace(ctx, keyspace)
	})

	// Shards
	handleCollection("shards", func(r *http.Request) (interface{}, error) {
		shardPath := getItemPath(r.URL.Path)
		if !strings.Contains(shardPath, "/") {
			return nil, fmt.Errorf("invalid shard path: %q", shardPath)
		}
		parts := strings.SplitN(shardPath, "/", 2)
		keyspace := parts[0]
		shard := parts[1]

		// List the shards in a keyspace.
		if shard == "" {
			return ts.GetShardNames(ctx, keyspace)
		}

		// Perform an action on a shard.
		if r.Method == "POST" {
			if err := r.ParseForm(); err != nil {
				return nil, err
			}
			action := r.FormValue("action")
			if action == "" {
				return nil, errors.New("must specify action")
			}
			return actions.ApplyShardAction(ctx, action, keyspace, shard, r), nil
		}

		// Get the shard record.
		return ts.GetShard(ctx, keyspace, shard)
	})

	// Tablets
	handleCollection("tablets", func(r *http.Request) (interface{}, error) {
		tabletPath := getItemPath(r.URL.Path)

		// List tablets based on query params.
		if tabletPath == "" {
			if err := r.ParseForm(); err != nil {
				return nil, err
			}
			shardRef := r.FormValue("shard")
			cell := r.FormValue("cell")

			if shardRef != "" {
				// Look up by keyspace/shard, and optionally cell.
				keyspace, shard, err := topo.ParseKeyspaceShardString(shardRef)
				if err != nil {
					return nil, err
				}
				if cell != "" {
					return topo.FindAllTabletAliasesInShardByCell(ctx, ts, keyspace, shard, []string{cell})
				}
				return topo.FindAllTabletAliasesInShard(ctx, ts, keyspace, shard)
			}

			// Get all tablets in a cell.
			if cell == "" {
				return nil, errors.New("cell param required")
			}
			return ts.GetTabletsByCell(ctx, cell)
		}

		// Get tablet health.
		if parts := strings.Split(tabletPath, "/"); len(parts) == 2 && parts[1] == "health" {
//.........这里部分代码省略.........

func initAPI(ctx context.Context, ts topo.Server, actions *ActionRepository) {
	tabletHealthCache := newTabletHealthCache(ts)
	tmClient := tmclient.NewTabletManagerClient()

	// Cells
	handleCollection("cells", func(r *http.Request) (interface{}, error) {
		if getItemPath(r.URL.Path) != "" {
			return nil, errors.New("cells can only be listed, not retrieved")
		}
		return ts.GetKnownCells(ctx)
	})

	// Keyspaces
	handleCollection("keyspaces", func(r *http.Request) (interface{}, error) {
		keyspace := getItemPath(r.URL.Path)

		// List all keyspaces.
		if keyspace == "" {
			return ts.GetKeyspaces(ctx)
		}

		// Perform an action on a keyspace.
		if r.Method == "POST" {
			if err := r.ParseForm(); err != nil {
				return nil, err
			}
			action := r.FormValue("action")
			if action == "" {
				return nil, errors.New("must specify action")
			}
			return actions.ApplyKeyspaceAction(ctx, action, keyspace, r), nil
		}

		// Get the keyspace record.
		return ts.GetKeyspace(ctx, keyspace)
	})

	// Shards
	handleCollection("shards", func(r *http.Request) (interface{}, error) {
		shardPath := getItemPath(r.URL.Path)
		if !strings.Contains(shardPath, "/") {
			return nil, fmt.Errorf("invalid shard path: %q", shardPath)
		}
		parts := strings.SplitN(shardPath, "/", 2)
		keyspace := parts[0]
		shard := parts[1]

		// List the shards in a keyspace.
		if shard == "" {
			return ts.GetShardNames(ctx, keyspace)
		}

		// Perform an action on a shard.
		if r.Method == "POST" {
			if err := r.ParseForm(); err != nil {
				return nil, err
			}
			action := r.FormValue("action")
			if action == "" {
				return nil, errors.New("must specify action")
			}
			return actions.ApplyShardAction(ctx, action, keyspace, shard, r), nil
		}

		// Get the shard record.
		return ts.GetShard(ctx, keyspace, shard)
	})
	//SrvKeyspace
	handleCollection("srv_keyspace", func(r *http.Request) (interface{}, error) {
		keyspacePath := getItemPath(r.URL.Path)
		parts := strings.SplitN(keyspacePath, "/", 2)

		//request was incorrectly formatted
		if len(parts) != 2 {
			return nil, fmt.Errorf("invalid srvkeyspace path: %q  expected path: /srv_keyspace/<cell>/<keyspace>", keyspacePath)
		}

		cell := parts[0]
		keyspace := parts[1]

		if cell == "local" {
			if *localCell == "" {
				return nil, fmt.Errorf("local cell requested, but not specified. Please set with -cell flag")
			}
			cell = *localCell
		}

		//If a keyspace is provided then return the specified srvkeyspace
		if keyspace != "" {
			srvKeyspace, err := ts.GetSrvKeyspace(ctx, cell, keyspace)
			if err != nil {
				return nil, fmt.Errorf("Can't get server keyspace: %v", err)
			}
			return srvKeyspace, nil
		}

		//Else return the srvKeyspace from all keyspaces
		srvKeyspaces := make(map[string]interface{})
		keyspaceNamesList, err := ts.GetSrvKeyspaceNames(ctx, cell)
		if err != nil {
//.........这里部分代码省略.........

// CopyShardReplications will create the ShardReplication objects in
// the destination topo
func CopyShardReplications(fromTS, toTS topo.Server) {
	keyspaces, err := fromTS.GetKeyspaces()
	if err != nil {
		log.Fatalf("fromTS.GetKeyspaces failed: %v", err)
	}

	wg := sync.WaitGroup{}
	rec := concurrency.AllErrorRecorder{}
	for _, keyspace := range keyspaces {
		wg.Add(1)
		go func(keyspace string) {
			defer wg.Done()
			shards, err := fromTS.GetShardNames(keyspace)
			if err != nil {
				rec.RecordError(err)
				return
			}

			for _, shard := range shards {
				wg.Add(1)
				go func(keyspace, shard string) {
					defer wg.Done()

					// read the source shard to get the cells
					si, err := fromTS.GetShard(keyspace, shard)
					if err != nil {
						rec.RecordError(err)
						return
					}

					for _, cell := range si.Cells {
						sri, err := fromTS.GetShardReplication(cell, keyspace, shard)
						if err != nil {
							rec.RecordError(err)
							continue
						}

						err = toTS.CreateShardReplication(cell, keyspace, shard, sri.ShardReplication)
						switch err {
						case nil:
							// good
						case topo.ErrNodeExists:
							if err := toTS.UpdateShardReplicationFields(cell, keyspace, shard, func(oldSR *topo.ShardReplication) error {
								*oldSR = *sri.ShardReplication
								return nil
							}); err != nil {
								rec.RecordError(err)
							}
						default:
							rec.RecordError(err)
						}
					}
				}(keyspace, shard)
			}
		}(keyspace)
	}
	wg.Wait()
	if rec.HasErrors() {
		log.Fatalf("copyShards failed: %v", rec.Error())
	}
}

func initAPI(ctx context.Context, ts topo.Server, actions *ActionRepository) {
	tabletHealthCache := newTabletHealthCache(ts)

	// Cells
	handleCollection("cells", func(r *http.Request) (interface{}, error) {
		if getItemPath(r.URL.Path) != "" {
			return nil, errors.New("cells can only be listed, not retrieved")
		}
		return ts.GetKnownCells(ctx)
	})

	// Keyspaces
	handleCollection("keyspaces", func(r *http.Request) (interface{}, error) {
		keyspace := getItemPath(r.URL.Path)

		// List all keyspaces.
		if keyspace == "" {
			return ts.GetKeyspaces(ctx)
		}

		// Perform an action on a keyspace.
		if r.Method == "POST" {
			if err := r.ParseForm(); err != nil {
				return nil, err
			}
			action := r.FormValue("action")
			if action == "" {
				return nil, errors.New("must specify action")
			}
			return actions.ApplyKeyspaceAction(ctx, action, keyspace, r), nil
		}

		// Get the keyspace record.
		return ts.GetKeyspace(ctx, keyspace)
	})

	// Shards
	handleCollection("shards", func(r *http.Request) (interface{}, error) {
		shardPath := getItemPath(r.URL.Path)
		if !strings.Contains(shardPath, "/") {
			return nil, fmt.Errorf("invalid shard path: %q", shardPath)
		}
		parts := strings.SplitN(shardPath, "/", 2)
		keyspace := parts[0]
		shard := parts[1]

		// List the shards in a keyspace.
		if shard == "" {
			return ts.GetShardNames(ctx, keyspace)
		}

		// Perform an action on a shard.
		if r.Method == "POST" {
			if err := r.ParseForm(); err != nil {
				return nil, err
			}
			action := r.FormValue("action")
			if action == "" {
				return nil, errors.New("must specify action")
			}
			return actions.ApplyShardAction(ctx, action, keyspace, shard, r), nil
		}

		// Get the shard record.
		return ts.GetShard(ctx, keyspace, shard)
	})

	// Tablets
	handleCollection("tablets", func(r *http.Request) (interface{}, error) {
		tabletPath := getItemPath(r.URL.Path)

		// List tablets based on query params.
		if tabletPath == "" {
			if err := r.ParseForm(); err != nil {
				return nil, err
			}
			shardRef := r.FormValue("shard")
			cell := r.FormValue("cell")

			if shardRef != "" {
				// Look up by keyspace/shard, and optionally cell.
				keyspace, shard, err := topoproto.ParseKeyspaceShard(shardRef)
				if err != nil {
					return nil, err
				}
				if cell != "" {
					return ts.FindAllTabletAliasesInShardByCell(ctx, keyspace, shard, []string{cell})
				}
				return ts.FindAllTabletAliasesInShard(ctx, keyspace, shard)
			}

			// Get all tablets in a cell.
			if cell == "" {
				return nil, errors.New("cell param required")
			}
			return ts.GetTabletsByCell(ctx, cell)
		}

		// Get tablet health.
		if parts := strings.Split(tabletPath, "/"); len(parts) == 2 && parts[1] == "health" {
//.........这里部分代码省略.........

func CheckKeyspace(t *testing.T, ts topo.Server) {
	keyspaces, err := ts.GetKeyspaces()
	if err != nil {
		t.Errorf("GetKeyspaces(empty): %v", err)
	}
	if len(keyspaces) != 0 {
		t.Errorf("len(GetKeyspaces()) != 0: %v", keyspaces)
	}

	if err := ts.CreateKeyspace("test_keyspace", &topo.Keyspace{}); err != nil {
		t.Errorf("CreateKeyspace: %v", err)
	}
	if err := ts.CreateKeyspace("test_keyspace", &topo.Keyspace{}); err != topo.ErrNodeExists {
		t.Errorf("CreateKeyspace(again) is not ErrNodeExists: %v", err)
	}

	keyspaces, err = ts.GetKeyspaces()
	if err != nil {
		t.Errorf("GetKeyspaces: %v", err)
	}
	if len(keyspaces) != 1 || keyspaces[0] != "test_keyspace" {
		t.Errorf("GetKeyspaces: want %v, got %v", []string{"test_keyspace"}, keyspaces)
	}

	if err := ts.CreateKeyspace("test_keyspace2", &topo.Keyspace{
		ShardingColumnName: "user_id",
		ShardingColumnType: key.KIT_UINT64,
		ServedFrom: map[topo.TabletType]string{
			topo.TYPE_MASTER: "test_keyspace3",
		},
	}); err != nil {
		t.Errorf("CreateKeyspace: %v", err)
	}
	keyspaces, err = ts.GetKeyspaces()
	if err != nil {
		t.Errorf("GetKeyspaces: %v", err)
	}
	if len(keyspaces) != 2 ||
		keyspaces[0] != "test_keyspace" ||
		keyspaces[1] != "test_keyspace2" {
		t.Errorf("GetKeyspaces: want %v, got %v", []string{"test_keyspace", "test_keyspace2"}, keyspaces)
	}

	ki, err := ts.GetKeyspace("test_keyspace2")
	if err != nil {
		t.Fatalf("GetKeyspace: %v", err)
	}
	if ki.ShardingColumnName != "user_id" ||
		ki.ShardingColumnType != key.KIT_UINT64 ||
		ki.ServedFrom[topo.TYPE_MASTER] != "test_keyspace3" {
		t.Errorf("GetKeyspace: unexpected keyspace, got %v", *ki)
	}

	ki.ShardingColumnName = "other_id"
	ki.ShardingColumnType = key.KIT_BYTES
	delete(ki.ServedFrom, topo.TYPE_MASTER)
	ki.ServedFrom[topo.TYPE_REPLICA] = "test_keyspace4"
	err = ts.UpdateKeyspace(ki)
	if err != nil {
		t.Fatalf("UpdateKeyspace: %v", err)
	}
	ki, err = ts.GetKeyspace("test_keyspace2")
	if err != nil {
		t.Fatalf("GetKeyspace: %v", err)
	}
	if ki.ShardingColumnName != "other_id" ||
		ki.ShardingColumnType != key.KIT_BYTES ||
		ki.ServedFrom[topo.TYPE_REPLICA] != "test_keyspace4" {
		t.Errorf("GetKeyspace: unexpected keyspace, got %v", *ki)
	}
}

func initAPI(ctx context.Context, ts topo.Server, actions *ActionRepository) {
	tabletHealthCache := newTabletHealthCache(ts)

	// Cells
	handleCollection("cells", func(r *http.Request) (interface{}, error) {
		if getItemPath(r.URL.Path) != "" {
			return nil, errors.New("cells can only be listed, not retrieved")
		}
		return ts.GetKnownCells(ctx)
	})

	// Keyspaces
	handleCollection("keyspaces", func(r *http.Request) (interface{}, error) {
		keyspace := getItemPath(r.URL.Path)

		// List all keyspaces.
		if keyspace == "" {
			return ts.GetKeyspaces(ctx)
		}

		// Perform an action on a keyspace.
		if r.Method == "POST" {
			if err := r.ParseForm(); err != nil {
				return nil, err
			}
			action := r.FormValue("action")
			if action == "" {
				return nil, errors.New("must specify action")
			}
			return actions.ApplyKeyspaceAction(ctx, action, keyspace, r), nil
		}

		// Get the keyspace record.
		return ts.GetKeyspace(ctx, keyspace)
	})

	// Shards
	handleCollection("shards", func(r *http.Request) (interface{}, error) {
		shardPath := getItemPath(r.URL.Path)
		if !strings.Contains(shardPath, "/") {
			return nil, fmt.Errorf("invalid shard path: %q", shardPath)
		}
		parts := strings.SplitN(shardPath, "/", 2)
		keyspace := parts[0]
		shard := parts[1]

		// List the shards in a keyspace.
		if shard == "" {
			return ts.GetShardNames(ctx, keyspace)
		}

		// Perform an action on a shard.
		if r.Method == "POST" {
			if err := r.ParseForm(); err != nil {
				return nil, err
			}
			action := r.FormValue("action")
			if action == "" {
				return nil, errors.New("must specify action")
			}
			return actions.ApplyShardAction(ctx, action, keyspace, shard, r), nil
		}

		// Get the shard record.
		return ts.GetShard(ctx, keyspace, shard)
	})

	// Tablets
	handleCollection("tablets", func(r *http.Request) (interface{}, error) {
		tabletPath := getItemPath(r.URL.Path)

		// List tablets based on query params.
		if tabletPath == "" {
			if err := r.ParseForm(); err != nil {
				return nil, err
			}
			shardRef := r.FormValue("shard")
			cell := r.FormValue("cell")

			if shardRef != "" {
				// Look up by keyspace/shard, and optionally cell.
				keyspace, shard, err := topoproto.ParseKeyspaceShard(shardRef)
				if err != nil {
					return nil, err
				}
				if cell != "" {
					return ts.FindAllTabletAliasesInShardByCell(ctx, keyspace, shard, []string{cell})
				}
				return ts.FindAllTabletAliasesInShard(ctx, keyspace, shard)
			}

			// Get all tablets in a cell.
			if cell == "" {
				return nil, errors.New("cell param required")
			}
			return ts.GetTabletsByCell(ctx, cell)
		}

		// Get tablet health.
		if parts := strings.Split(tabletPath, "/"); len(parts) == 2 && parts[1] == "health" {
//.........这里部分代码省略.........

// CheckKeyspace tests the keyspace part of the API
func CheckKeyspace(ctx context.Context, t *testing.T, ts topo.Server) {
	keyspaces, err := ts.GetKeyspaces(ctx)
	if err != nil {
		t.Errorf("GetKeyspaces(empty): %v", err)
	}
	if len(keyspaces) != 0 {
		t.Errorf("len(GetKeyspaces()) != 0: %v", keyspaces)
	}

	if err := ts.CreateKeyspace(ctx, "test_keyspace", &pb.Keyspace{}); err != nil {
		t.Errorf("CreateKeyspace: %v", err)
	}
	if err := ts.CreateKeyspace(ctx, "test_keyspace", &pb.Keyspace{}); err != topo.ErrNodeExists {
		t.Errorf("CreateKeyspace(again) is not ErrNodeExists: %v", err)
	}

	// Delete and re-create.
	if err := ts.DeleteKeyspace(ctx, "test_keyspace"); err != nil {
		t.Errorf("DeleteKeyspace: %v", err)
	}
	if err := ts.CreateKeyspace(ctx, "test_keyspace", &pb.Keyspace{}); err != nil {
		t.Errorf("CreateKeyspace: %v", err)
	}

	keyspaces, err = ts.GetKeyspaces(ctx)
	if err != nil {
		t.Errorf("GetKeyspaces: %v", err)
	}
	if len(keyspaces) != 1 || keyspaces[0] != "test_keyspace" {
		t.Errorf("GetKeyspaces: want %v, got %v", []string{"test_keyspace"}, keyspaces)
	}

	k := &pb.Keyspace{
		ShardingColumnName: "user_id",
		ShardingColumnType: pb.KeyspaceIdType_UINT64,
		ServedFroms: []*pb.Keyspace_ServedFrom{
			&pb.Keyspace_ServedFrom{
				TabletType: pb.TabletType_REPLICA,
				Cells:      []string{"c1", "c2"},
				Keyspace:   "test_keyspace3",
			},
			&pb.Keyspace_ServedFrom{
				TabletType: pb.TabletType_MASTER,
				Cells:      nil,
				Keyspace:   "test_keyspace3",
			},
		},
		SplitShardCount: 64,
	}
	if err := ts.CreateKeyspace(ctx, "test_keyspace2", k); err != nil {
		t.Errorf("CreateKeyspace: %v", err)
	}
	keyspaces, err = ts.GetKeyspaces(ctx)
	if err != nil {
		t.Errorf("GetKeyspaces: %v", err)
	}
	if len(keyspaces) != 2 ||
		keyspaces[0] != "test_keyspace" ||
		keyspaces[1] != "test_keyspace2" {
		t.Errorf("GetKeyspaces: want %v, got %v", []string{"test_keyspace", "test_keyspace2"}, keyspaces)
	}

	// Call delete shards and make sure the keyspace still exists.
	if err := ts.DeleteKeyspaceShards(ctx, "test_keyspace2"); err != nil {
		t.Errorf("DeleteKeyspaceShards: %v", err)
	}
	ki, err := ts.GetKeyspace(ctx, "test_keyspace2")
	if err != nil {
		t.Fatalf("GetKeyspace: %v", err)
	}
	if !reflect.DeepEqual(ki.Keyspace, k) {
		t.Fatalf("returned keyspace doesn't match: got %v expected %v", ki.Keyspace, k)
	}

	ki.ShardingColumnName = "other_id"
	ki.ShardingColumnType = pb.KeyspaceIdType_BYTES
	var newServedFroms []*pb.Keyspace_ServedFrom
	for _, ksf := range ki.ServedFroms {
		if ksf.TabletType == pb.TabletType_MASTER {
			continue
		}
		if ksf.TabletType == pb.TabletType_REPLICA {
			ksf.Keyspace = "test_keyspace4"
		}
		newServedFroms = append(newServedFroms, ksf)
	}
	ki.ServedFroms = newServedFroms
	err = topo.UpdateKeyspace(ctx, ts, ki)
	if err != nil {
		t.Fatalf("UpdateKeyspace: %v", err)
	}
	ki, err = ts.GetKeyspace(ctx, "test_keyspace2")
	if err != nil {
		t.Fatalf("GetKeyspace: %v", err)
	}
	if ki.ShardingColumnName != "other_id" ||
		ki.ShardingColumnType != pb.KeyspaceIdType_BYTES ||
		ki.GetServedFrom(pb.TabletType_REPLICA).Keyspace != "test_keyspace4" {
		t.Errorf("GetKeyspace: unexpected keyspace, got %v", *ki)
//.........这里部分代码省略.........