swarm/storage/mru: Renamed all identifiers to Feeds

cmd/swarm/mru.go

@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
 
-// Command resource allows the user to create and update signed mutable resource updates
+// Command resource allows the user to create and update signed Swarm Feeds
 package main
 
 import (
@@ -66,7 +66,7 @@ func resourceCreate(ctx *cli.Context) {
 	)
 
 	newResourceRequest := mru.NewFirstRequest(getTopic(ctx))
-	newResourceRequest.View.User = resourceGetUser(ctx)
+	newResourceRequest.Feed.User = resourceGetUser(ctx)
 
 	manifestAddress, err := client.CreateResource(newResourceRequest)
 	if err != nil {

cmd/swarm/mru_test.go

@@ -101,7 +101,7 @@ func TestCLIResourceUpdate(t *testing.T) {
 	}
 
 	// View configures whose updates we will be looking up.
-	view := mru.View{
+	view := mru.Feed{
 		Topic: topic,
 		User:  address,
 	}
@@ -146,8 +146,8 @@ func TestCLIResourceUpdate(t *testing.T) {
 	}
 
 	// make sure the retrieved view is the same
-	if request.View != view {
-		t.Fatalf("Expected view to be: %s, got %s", view, request.View)
+	if request.Feed != view {
+		t.Fatalf("Expected view to be: %s, got %s", view, request.Feed)
 	}
 
 	// test publishing a manifest

swarm/api/api.go

@@ -956,14 +956,14 @@ func (a *API) BuildDirectoryTree(ctx context.Context, mhash string, nameresolver
 	return addr, manifestEntryMap, nil
 }
 
-// ResourceLookup finds mutable resource updates at specific periods and versions
+// ResourceLookup finds Swarm Feeds at specific periods and versions
 func (a *API) ResourceLookup(ctx context.Context, query *mru.Query) ([]byte, error) {
 	_, err := a.resource.Lookup(ctx, query)
 	if err != nil {
 		return nil, err
 	}
 	var data []byte
-	_, data, err = a.resource.GetContent(&query.View)
+	_, data, err = a.resource.GetContent(&query.Feed)
 	if err != nil {
 		return nil, err
 	}
@@ -971,7 +971,7 @@ func (a *API) ResourceLookup(ctx context.Context, query *mru.Query) ([]byte, err
 }
 
 // ResourceNewRequest creates a Request object to update a specific mutable resource
-func (a *API) ResourceNewRequest(ctx context.Context, view *mru.View) (*mru.Request, error) {
+func (a *API) ResourceNewRequest(ctx context.Context, view *mru.Feed) (*mru.Request, error) {
 	return a.resource.NewRequest(ctx, view)
 }
 
@@ -993,7 +993,7 @@ var ErrCannotLoadResourceManifest = errors.New("Cannot load resource manifest")
 var ErrNotAResourceManifest = errors.New("Not a resource manifest")
 
 // ResolveResourceManifest retrieves the Mutable Resource manifest for the given address, and returns the Resource's view ID.
-func (a *API) ResolveResourceManifest(ctx context.Context, addr storage.Address) (*mru.View, error) {
+func (a *API) ResolveResourceManifest(ctx context.Context, addr storage.Address) (*mru.Feed, error) {
 	trie, err := loadManifest(ctx, a.fileStore, addr, nil, NOOPDecrypt)
 	if err != nil {
 		return nil, ErrCannotLoadResourceManifest
@@ -1016,8 +1016,8 @@ var ErrCannotResolveResourceView = errors.New("Cannot resolve resource view")
 
 // ResolveResourceView attempts to extract View information out of the manifest, if provided
 // If not, it attempts to extract the View out of a set of key-value pairs
-func (a *API) ResolveResourceView(ctx context.Context, uri *URI, values mru.Values) (*mru.View, error) {
-	var view *mru.View
+func (a *API) ResolveResourceView(ctx context.Context, uri *URI, values mru.Values) (*mru.Feed, error) {
+	var view *mru.Feed
 	var err error
 	if uri.Addr != "" {
 		// resolve the content key.
@@ -1036,7 +1036,7 @@ func (a *API) ResolveResourceView(ctx context.Context, uri *URI, values mru.Valu
 		}
 		log.Debug("handle.get.resource: resolved", "manifestkey", manifestAddr, "view", view.Hex())
 	} else {
-		var v mru.View
+		var v mru.Feed
 		if err := v.FromValues(values); err != nil {
 			return nil, ErrCannotResolveResourceView
 

swarm/api/client/client_test.go

@@ -508,7 +508,7 @@ func TestClientCreateUpdateResource(t *testing.T) {
 
 	// now try retrieving resource without a manifest
 
-	view := &mru.View{
+	view := &mru.Feed{
 		Topic: topic,
 		User:  signer.Address(),
 	}

swarm/api/http/server.go

@@ -517,7 +517,7 @@ func (s *Server) HandlePostResource(w http.ResponseWriter, r *http.Request) {
 	}
 
 	var updateRequest mru.Request
-	updateRequest.View = *view
+	updateRequest.Feed = *view
 	query := r.URL.Query()
 
 	if err := updateRequest.FromValues(query, body); err != nil { // decodes request from query parameters
@@ -544,7 +544,7 @@ func (s *Server) HandlePostResource(w http.ResponseWriter, r *http.Request) {
 		// we create a manifest so we can retrieve the resource with bzz:// later
 		// this manifest has a special "resource type" manifest, and saves the
 		// resource view ID used to retrieve the resource later
-		m, err := s.api.NewResourceManifest(r.Context(), &updateRequest.View)
+		m, err := s.api.NewResourceManifest(r.Context(), &updateRequest.Feed)
 		if err != nil {
 			RespondError(w, r, fmt.Sprintf("failed to create resource manifest: %v", err), http.StatusInternalServerError)
 			return
@@ -563,7 +563,7 @@ func (s *Server) HandlePostResource(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
-// Retrieve mutable resource updates:
+// Retrieve Swarm Feeds:
 // bzz-resource://<id> - get latest update
 // bzz-resource://<id>/?period=n - get latest update on period n
 // bzz-resource://<id>/?period=n&version=m - get update version m of period n
@@ -606,7 +606,7 @@ func (s *Server) HandleGetResource(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	lookupParams := &mru.Query{View: *view}
+	lookupParams := &mru.Query{Feed: *view}
 	if err = lookupParams.FromValues(r.URL.Query()); err != nil { // parse period, version
 		RespondError(w, r, fmt.Sprintf("invalid mutable resource request:%s", err), http.StatusBadRequest)
 		return

swarm/api/http/server_test.go

@@ -206,7 +206,7 @@ func TestBzzResourceMultihash(t *testing.T) {
 	}
 }
 
-// Test resource updates using the raw update methods
+// Test Swarm Feeds using the raw update methods
 func TestBzzResource(t *testing.T) {
 	srv := testutil.NewTestSwarmServer(t, serverFunc, nil)
 	signer, _ := newTestSigner()
@@ -406,7 +406,7 @@ func TestBzzResource(t *testing.T) {
 
 	// test manifest-less queries
 	log.Info("get first update in update1Timestamp via direct query")
-	query := mru.NewQuery(&updateRequest.View, update1Timestamp, lookup.NoClue)
+	query := mru.NewQuery(&updateRequest.Feed, update1Timestamp, lookup.NoClue)
 
 	urlq, err := url.Parse(fmt.Sprintf("%s/bzz-resource:/", srv.URL))
 	if err != nil {

swarm/api/manifest.go

@@ -56,7 +56,7 @@ type ManifestEntry struct {
 	ModTime      time.Time    `json:"mod_time,omitempty"`
 	Status       int          `json:"status,omitempty"`
 	Access       *AccessEntry `json:"access,omitempty"`
-	ResourceView *mru.View    `json:"resourceView,omitempty"`
+	ResourceView *mru.Feed    `json:"resourceView,omitempty"`
 }
 
 // ManifestList represents the result of listing files in a manifest
@@ -82,7 +82,7 @@ func (a *API) NewManifest(ctx context.Context, toEncrypt bool) (storage.Address,
 
 // Manifest hack for supporting Mutable Resource Updates from the bzz: scheme
 // see swarm/api/api.go:API.Get() for more information
-func (a *API) NewResourceManifest(ctx context.Context, view *mru.View) (storage.Address, error) {
+func (a *API) NewResourceManifest(ctx context.Context, view *mru.Feed) (storage.Address, error) {
 	var manifest Manifest
 	entry := ManifestEntry{
 		ResourceView: view,

swarm/network/README.md

@@ -37,7 +37,7 @@ Using the streamer logic, various stream types are easy to implement:
   * live session syncing
   * historical syncing
 * simple retrieve requests and deliveries
-* mutable resource updates streams
+* Swarm Feeds streams
 * receipting for finger pointing
 
 ## Syncing

swarm/storage/mru/cacheentry.go

@@ -26,23 +26,23 @@ import (
 
 const (
 	hasherCount            = 8
-	resourceHashAlgorithm  = storage.SHA3Hash
+	feedsHashAlgorithm     = storage.SHA3Hash
 	defaultRetrieveTimeout = 100 * time.Millisecond
 )
 
 // cacheEntry caches resource data and the metadata of its root chunk.
 type cacheEntry struct {
-	ResourceUpdate
+	Update
 	*bytes.Reader
 	lastKey storage.Address
 }
 
 // implements storage.LazySectionReader
 func (r *cacheEntry) Size(ctx context.Context, _ chan bool) (int64, error) {
-	return int64(len(r.ResourceUpdate.data)), nil
+	return int64(len(r.Update.data)), nil
 }
 
 //returns the resource's topic
 func (r *cacheEntry) Topic() Topic {
-	return r.View.Topic
+	return r.Feed.Topic
 }

swarm/storage/mru/doc.go

 /*
-Package mru defines Mutable resource updates.
+Package feeds defines Swarm Feeds.
 
 A Mutable Resource is an entity which allows updates to a resource
 without resorting to ENS on each update.

swarm/storage/mru/handler.go

@@ -34,8 +34,8 @@ import (
 type Handler struct {
 	chunkStore      *storage.NetStore
 	HashSize        int
-	resources       map[uint64]*cacheEntry
-	resourceLock    sync.RWMutex
+	cache           map[uint64]*cacheEntry
+	cacheLock       sync.RWMutex
 	storeTimeout    time.Duration
 	queryMaxPeriods uint32
 }
@@ -52,26 +52,26 @@ var hashPool sync.Pool
 func init() {
 	hashPool = sync.Pool{
 		New: func() interface{} {
-			return storage.MakeHashFunc(resourceHashAlgorithm)()
+			return storage.MakeHashFunc(feedsHashAlgorithm)()
 		},
 	}
 }
 
 // NewHandler creates a new Mutable Resource API
 func NewHandler(params *HandlerParams) *Handler {
-	rh := &Handler{
-		resources: make(map[uint64]*cacheEntry),
+	fh := &Handler{
+		cache: make(map[uint64]*cacheEntry),
 	}
 
 	for i := 0; i < hasherCount; i++ {
-		hashfunc := storage.MakeHashFunc(resourceHashAlgorithm)()
-		if rh.HashSize == 0 {
-			rh.HashSize = hashfunc.Size()
+		hashfunc := storage.MakeHashFunc(feedsHashAlgorithm)()
+		if fh.HashSize == 0 {
+			fh.HashSize = hashfunc.Size()
 		}
 		hashPool.Put(hashfunc)
 	}
 
-	return rh
+	return fh
 }
 
 // SetStore sets the store backend for the Mutable Resource API
@@ -95,7 +95,7 @@ func (h *Handler) Validate(chunkAddr storage.Address, data []byte) bool {
 	// First, deserialize the chunk
 	var r Request
 	if err := r.fromChunk(chunkAddr, data); err != nil {
-		log.Debug("Invalid resource chunk", "addr", chunkAddr.Hex(), "err", err.Error())
+		log.Debug("Invalid feed update chunk", "addr", chunkAddr.Hex(), "err", err.Error())
 		return false
 	}
 
@@ -103,7 +103,7 @@ func (h *Handler) Validate(chunkAddr storage.Address, data []byte) bool {
 	// If it fails, it means either the signature is not valid, data is corrupted
 	// or someone is trying to update someone else's resource.
 	if err := r.Verify(); err != nil {
-		log.Debug("Invalid signature", "err", err)
+		log.Debug("Invalid feed update signature", "err", err)
 		return false
 	}
 
@@ -111,32 +111,32 @@ func (h *Handler) Validate(chunkAddr storage.Address, data []byte) bool {
 }
 
 // GetContent retrieves the data payload of the last synced update of the Mutable Resource
-func (h *Handler) GetContent(view *View) (storage.Address, []byte, error) {
-	if view == nil {
+func (h *Handler) GetContent(feed *Feed) (storage.Address, []byte, error) {
+	if feed == nil {
 		return nil, nil, NewError(ErrInvalidValue, "view is nil")
 	}
-	rsrc := h.get(view)
-	if rsrc == nil {
+	feedUpdate := h.get(feed)
+	if feedUpdate == nil {
 		return nil, nil, NewError(ErrNotFound, "resource does not exist")
 	}
-	return rsrc.lastKey, rsrc.data, nil
+	return feedUpdate.lastKey, feedUpdate.data, nil
 }
 
 // NewRequest prepares a Request structure with all the necessary information to
 // just add the desired data and sign it.
 // The resulting structure can then be signed and passed to Handler.Update to be verified and sent
-func (h *Handler) NewRequest(ctx context.Context, view *View) (request *Request, err error) {
-	if view == nil {
-		return nil, NewError(ErrInvalidValue, "view cannot be nil")
+func (h *Handler) NewRequest(ctx context.Context, feed *Feed) (request *Request, err error) {
+	if feed == nil {
+		return nil, NewError(ErrInvalidValue, "feed cannot be nil")
 	}
 
 	now := TimestampProvider.Now().Time
 	request = new(Request)
 	request.Header.Version = ProtocolVersion
 
-	query := NewQueryLatest(view, lookup.NoClue)
+	query := NewQueryLatest(feed, lookup.NoClue)
 
-	rsrc, err := h.Lookup(ctx, query)
+	feedUpdate, err := h.Lookup(ctx, query)
 	if err != nil {
 		if err.(*Error).code != ErrNotFound {
 			return nil, err
@@ -145,11 +145,11 @@ func (h *Handler) NewRequest(ctx context.Context, view *View) (request *Request,
 		// or that the resource really does not have updates
 	}
 
-	request.View = *view
+	request.Feed = *feed
 
 	// if we already have an update, then find next epoch
-	if rsrc != nil {
-		request.Epoch = lookup.GetNextEpoch(rsrc.Epoch, now)
+	if feedUpdate != nil {
+		request.Epoch = lookup.GetNextEpoch(feedUpdate.Epoch, now)
 	} else {
 		request.Epoch = lookup.GetFirstEpoch(now)
 	}
@@ -172,7 +172,7 @@ func (h *Handler) Lookup(ctx context.Context, query *Query) (*cacheEntry, error)
 	}
 
 	if query.Hint == lookup.NoClue { // try to use our cache
-		entry := h.get(&query.View)
+		entry := h.get(&query.Feed)
 		if entry != nil && entry.Epoch.Time <= timeLimit { // avoid bad hints
 			query.Hint = entry.Epoch
 		}
@@ -183,19 +183,19 @@ func (h *Handler) Lookup(ctx context.Context, query *Query) (*cacheEntry, error)
 		return nil, NewError(ErrInit, "Call Handler.SetStore() before performing lookups")
 	}
 
-	var ul ID
-	ul.View = query.View
+	var id ID
+	id.Feed = query.Feed
 	var readCount int
 
 	// Invoke the lookup engine.
 	// The callback will be called every time the lookup algorithm needs to guess
 	requestPtr, err := lookup.Lookup(timeLimit, query.Hint, func(epoch lookup.Epoch, now uint64) (interface{}, error) {
 		readCount++
-		ul.Epoch = epoch
+		id.Epoch = epoch
 		ctx, cancel := context.WithTimeout(ctx, defaultRetrieveTimeout)
 		defer cancel()
 
-		chunk, err := h.chunkStore.Get(ctx, ul.Addr())
+		chunk, err := h.chunkStore.Get(ctx, id.Addr())
 		if err != nil { // TODO: check for catastrophic errors other than chunk not found
 			return nil, nil
 		}
@@ -227,19 +227,19 @@ func (h *Handler) Lookup(ctx context.Context, query *Query) (*cacheEntry, error)
 func (h *Handler) updateCache(request *Request) (*cacheEntry, error) {
 
 	updateAddr := request.Addr()
-	log.Trace("resource cache update", "topic", request.Topic.Hex(), "updatekey", updateAddr, "epoch time", request.Epoch.Time, "epoch level", request.Epoch.Level)
+	log.Trace("feed cache update", "topic", request.Topic.Hex(), "updateaddr", updateAddr, "epoch time", request.Epoch.Time, "epoch level", request.Epoch.Level)
 
-	rsrc := h.get(&request.View)
-	if rsrc == nil {
-		rsrc = &cacheEntry{}
-		h.set(&request.View, rsrc)
+	feedUpdate := h.get(&request.Feed)
+	if feedUpdate == nil {
+		feedUpdate = &cacheEntry{}
+		h.set(&request.Feed, feedUpdate)
 	}
 
 	// update our rsrcs entry map
-	rsrc.lastKey = updateAddr
-	rsrc.ResourceUpdate = request.ResourceUpdate
-	rsrc.Reader = bytes.NewReader(rsrc.data)
-	return rsrc, nil
+	feedUpdate.lastKey = updateAddr
+	feedUpdate.Update = request.Update
+	feedUpdate.Reader = bytes.NewReader(feedUpdate.data)
+	return feedUpdate, nil
 }
 
 // Update adds an actual data update
@@ -255,8 +255,8 @@ func (h *Handler) Update(ctx context.Context, r *Request) (updateAddr storage.Ad
 		return nil, NewError(ErrInit, "Call Handler.SetStore() before updating")
 	}
 
-	rsrc := h.get(&r.View)
-	if rsrc != nil && rsrc.Epoch.Equals(r.Epoch) { // This is the only cheap check we can do for sure
+	feedUpdate := h.get(&r.Feed)
+	if feedUpdate != nil && feedUpdate.Epoch.Equals(r.Epoch) { // This is the only cheap check we can do for sure
 		return nil, NewError(ErrInvalidValue, "A former update in this epoch is already known to exist")
 	}
 
@@ -267,32 +267,32 @@ func (h *Handler) Update(ctx context.Context, r *Request) (updateAddr storage.Ad
 
 	// send the chunk
 	h.chunkStore.Put(ctx, chunk)
-	log.Trace("resource update", "updateAddr", r.idAddr, "epoch time", r.Epoch.Time, "epoch level", r.Epoch.Level, "data", chunk.Data())
+	log.Trace("feed update", "updateAddr", r.idAddr, "epoch time", r.Epoch.Time, "epoch level", r.Epoch.Level, "data", chunk.Data())
 	// update our resources map cache entry if the new update is older than the one we have, if we have it.
-	if rsrc != nil && r.Epoch.After(rsrc.Epoch) {
-		rsrc.Epoch = r.Epoch
-		rsrc.data = make([]byte, len(r.data))
-		rsrc.lastKey = r.idAddr
-		copy(rsrc.data, r.data)
-		rsrc.Reader = bytes.NewReader(rsrc.data)
+	if feedUpdate != nil && r.Epoch.After(feedUpdate.Epoch) {
+		feedUpdate.Epoch = r.Epoch
+		feedUpdate.data = make([]byte, len(r.data))
+		feedUpdate.lastKey = r.idAddr
+		copy(feedUpdate.data, r.data)
+		feedUpdate.Reader = bytes.NewReader(feedUpdate.data)
 	}
 
 	return r.idAddr, nil
 }
 
 // Retrieves the resource cache value for the given nameHash
-func (h *Handler) get(view *View) *cacheEntry {
+func (h *Handler) get(view *Feed) *cacheEntry {
 	mapKey := view.mapKey()
-	h.resourceLock.RLock()
-	defer h.resourceLock.RUnlock()
-	rsrc := h.resources[mapKey]
-	return rsrc
+	h.cacheLock.RLock()
+	defer h.cacheLock.RUnlock()
+	feedUpdate := h.cache[mapKey]
+	return feedUpdate
 }
 
 // Sets the resource cache value for the given View
-func (h *Handler) set(view *View, rsrc *cacheEntry) {
+func (h *Handler) set(view *Feed, feedUpdate *cacheEntry) {
 	mapKey := view.mapKey()
-	h.resourceLock.Lock()
-	defer h.resourceLock.Unlock()
-	h.resources[mapKey] = rsrc
+	h.cacheLock.Lock()
+	defer h.cacheLock.Unlock()
+	h.cache[mapKey] = feedUpdate
 }

swarm/storage/mru/handler_test.go

@@ -40,7 +40,7 @@ var (
 		Time: uint64(4200),
 	}
 	cleanF       func()
-	resourceName = "føø.bar"
+	subtopicName = "føø.bar"
 	hashfunc     = storage.MakeHashFunc(storage.DefaultHash)
 )
 
@@ -73,7 +73,7 @@ func (f *fakeTimeProvider) Now() Timestamp {
 }
 
 // make updates and retrieve them based on periods and versions
-func TestResourceHandler(t *testing.T) {
+func TestFeedsHandler(t *testing.T) {
 
 	// make fake timeProvider
 	clock := &fakeTimeProvider{
@@ -83,7 +83,7 @@ func TestResourceHandler(t *testing.T) {
 	// signer containing private key
 	signer := newAliceSigner()
 
-	rh, datadir, teardownTest, err := setupTest(clock, signer)
+	feedsHandler, datadir, teardownTest, err := setupTest(clock, signer)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -93,8 +93,8 @@ func TestResourceHandler(t *testing.T) {
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()
 
-	topic, _ := NewTopic("Mess with mru code and see what ghost catches you", nil)
-	view := View{
+	topic, _ := NewTopic("Mess with Swarm Feeds code and see what ghost catches you", nil)
+	view := Feed{
 		Topic: topic,
 		User:  signer.Address(),
 	}
@@ -108,13 +108,13 @@ func TestResourceHandler(t *testing.T) {
 	}
 
 	request := NewFirstRequest(view.Topic) // this timestamps the update at t = 4200 (start time)
-	resourcekey := make(map[string]storage.Address)
+	chunkAddress := make(map[string]storage.Address)
 	data := []byte(updates[0])
 	request.SetData(data)
 	if err := request.Sign(signer); err != nil {
 		t.Fatal(err)
 	}
-	resourcekey[updates[0]], err = rh.Update(ctx, request)
+	chunkAddress[updates[0]], err = feedsHandler.Update(ctx, request)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -122,7 +122,7 @@ func TestResourceHandler(t *testing.T) {
 	// move the clock ahead 21 seconds
 	clock.FastForward(21) // t=4221
 
-	request, err = rh.NewRequest(ctx, &request.View) // this timestamps the update at t = 4221
+	request, err = feedsHandler.NewRequest(ctx, &request.Feed) // this timestamps the update at t = 4221
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -136,14 +136,14 @@ func TestResourceHandler(t *testing.T) {
 	if err := request.Sign(signer); err != nil {
 		t.Fatal(err)
 	}
-	resourcekey[updates[1]], err = rh.Update(ctx, request)
+	chunkAddress[updates[1]], err = feedsHandler.Update(ctx, request)
 	if err == nil {
 		t.Fatal("Expected update to fail since an update in this epoch already exists")
 	}
 
 	// move the clock ahead 21 seconds
 	clock.FastForward(21) // t=4242
-	request, err = rh.NewRequest(ctx, &request.View)
+	request, err = feedsHandler.NewRequest(ctx, &request.Feed)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -151,14 +151,14 @@ func TestResourceHandler(t *testing.T) {
 	if err := request.Sign(signer); err != nil {
 		t.Fatal(err)
 	}
-	resourcekey[updates[1]], err = rh.Update(ctx, request)
+	chunkAddress[updates[1]], err = feedsHandler.Update(ctx, request)
 	if err != nil {
 		t.Fatal(err)
 	}
 
 	// move the clock ahead 42 seconds
 	clock.FastForward(42) // t=4284
-	request, err = rh.NewRequest(ctx, &request.View)
+	request, err = feedsHandler.NewRequest(ctx, &request.Feed)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -167,14 +167,14 @@ func TestResourceHandler(t *testing.T) {
 	if err := request.Sign(signer); err != nil {
 		t.Fatal(err)
 	}
-	resourcekey[updates[2]], err = rh.Update(ctx, request)
+	chunkAddress[updates[2]], err = feedsHandler.Update(ctx, request)
 	if err != nil {
 		t.Fatal(err)
 	}
 
 	// move the clock ahead 1 second
 	clock.FastForward(1) // t=4285
-	request, err = rh.NewRequest(ctx, &request.View)
+	request, err = feedsHandler.NewRequest(ctx, &request.Feed)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -187,25 +187,25 @@ func TestResourceHandler(t *testing.T) {
 	if err := request.Sign(signer); err != nil {
 		t.Fatal(err)
 	}
-	resourcekey[updates[3]], err = rh.Update(ctx, request)
+	chunkAddress[updates[3]], err = feedsHandler.Update(ctx, request)
 	if err != nil {
 		t.Fatal(err)
 	}
 
 	time.Sleep(time.Second)
-	rh.Close()
+	feedsHandler.Close()
 
 	// check we can retrieve the updates after close
 	clock.FastForward(2000) // t=6285
 
-	rhparams := &HandlerParams{}
+	feedParams := &HandlerParams{}
 
-	rh2, err := NewTestHandler(datadir, rhparams)
+	feedsHandler2, err := NewTestHandler(datadir, feedParams)
 	if err != nil {
 		t.Fatal(err)
 	}
 
-	rsrc2, err := rh2.Lookup(ctx, NewQueryLatest(&request.View, lookup.NoClue))
+	rsrc2, err := feedsHandler2.Lookup(ctx, NewQueryLatest(&request.Feed, lookup.NoClue))
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -223,7 +223,7 @@ func TestResourceHandler(t *testing.T) {
 	log.Debug("Latest lookup", "epoch base time", rsrc2.Base(), "epoch level", rsrc2.Level, "data", rsrc2.data)
 
 	// specific point in time
-	rsrc, err := rh2.Lookup(ctx, NewQuery(&request.View, 4284, lookup.NoClue))
+	rsrc, err := feedsHandler2.Lookup(ctx, NewQuery(&request.Feed, 4284, lookup.NoClue))
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -234,7 +234,7 @@ func TestResourceHandler(t *testing.T) {
 	log.Debug("Historical lookup", "epoch base time", rsrc2.Base(), "epoch level", rsrc2.Level, "data", rsrc2.data)
 
 	// beyond the first should yield an error
-	rsrc, err = rh2.Lookup(ctx, NewQuery(&request.View, startTime.Time-1, lookup.NoClue))
+	rsrc, err = feedsHandler2.Lookup(ctx, NewQuery(&request.Feed, startTime.Time-1, lookup.NoClue))
 	if err == nil {
 		t.Fatalf("expected previous to fail, returned epoch %s data %v", rsrc.Epoch.String(), rsrc.data)
 	}
@@ -270,7 +270,7 @@ func TestSparseUpdates(t *testing.T) {
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()
 	topic, _ := NewTopic("Very slow updates", nil)
-	view := View{
+	view := Feed{
 		Topic: topic,
 		User:  signer.Address(),
 	}
@@ -349,12 +349,12 @@ func TestValidator(t *testing.T) {
 	defer teardownTest()
 
 	// create new resource
-	topic, _ := NewTopic(resourceName, nil)
-	view := View{
+	topic, _ := NewTopic(subtopicName, nil)
+	feed := Feed{
 		Topic: topic,
 		User:  signer.Address(),
 	}
-	mr := NewFirstRequest(view.Topic)
+	mr := NewFirstRequest(feed.Topic)
 
 	// chunk with address
 	data := []byte("foo")
@@ -410,9 +410,9 @@ func TestValidatorInStore(t *testing.T) {
 	}
 
 	// set up resource handler and add is as a validator to the localstore
-	rhParams := &HandlerParams{}
-	rh := NewHandler(rhParams)
-	store.Validators = append(store.Validators, rh)
+	fhParams := &HandlerParams{}
+	fh := NewHandler(fhParams)
+	store.Validators = append(store.Validators, fh)
 
 	// create content addressed chunks, one good, one faulty
 	chunks := storage.GenerateRandomChunks(chunk.DefaultSize, 2)
@@ -420,7 +420,7 @@ func TestValidatorInStore(t *testing.T) {
 	badChunk := storage.NewChunk(chunks[1].Address(), goodChunk.Data())
 
 	topic, _ := NewTopic("xyzzy", nil)
-	view := View{
+	feed := Feed{
 		Topic: topic,
 		User:  signer.Address(),
 	}
@@ -430,7 +430,7 @@ func TestValidatorInStore(t *testing.T) {
 		Epoch: lookup.Epoch{Time: 42,
 			Level: 1,
 		},
-		View: view,
+		Feed: feed,
 	}
 
 	updateAddr := id.Addr()
@@ -438,7 +438,7 @@ func TestValidatorInStore(t *testing.T) {
 
 	r := new(Request)
 	r.idAddr = updateAddr
-	r.ResourceUpdate.ID = id
+	r.Update.ID = id
 	r.data = data
 
 	r.Sign(signer)
@@ -451,20 +451,20 @@ func TestValidatorInStore(t *testing.T) {
 	// put the chunks in the store and check their error status
 	err = store.Put(context.Background(), goodChunk)
 	if err == nil {
-		t.Fatal("expected error on good content address chunk with resource validator only, but got nil")
+		t.Fatal("expected error on good content address chunk with feed update validator only, but got nil")
 	}
 	err = store.Put(context.Background(), badChunk)
 	if err == nil {
-		t.Fatal("expected error on bad content address chunk with resource validator only, but got nil")
+		t.Fatal("expected error on bad content address chunk with feed update validator only, but got nil")
 	}
 	err = store.Put(context.Background(), uglyChunk)
 	if err != nil {
-		t.Fatalf("expected no error on resource update chunk with resource validator only, but got: %s", err)
+		t.Fatalf("expected no error on feed update chunk with feed update validator only, but got: %s", err)
 	}
 }
 
 // create rpc and resourcehandler
-func setupTest(timeProvider timestampProvider, signer Signer) (rh *TestHandler, datadir string, teardown func(), err error) {
+func setupTest(timeProvider timestampProvider, signer Signer) (fh *TestHandler, datadir string, teardown func(), err error) {
 
 	var fsClean func()
 	var rpcClean func()
@@ -478,7 +478,7 @@ func setupTest(timeProvider timestampProvider, signer Signer) (rh *TestHandler,
 	}
 
 	// temp datadir
-	datadir, err = ioutil.TempDir("", "rh")
+	datadir, err = ioutil.TempDir("", "fh")
 	if err != nil {
 		return nil, "", nil, err
 	}
@@ -487,9 +487,9 @@ func setupTest(timeProvider timestampProvider, signer Signer) (rh *TestHandler,
 	}
 
 	TimestampProvider = timeProvider
-	rhparams := &HandlerParams{}
-	rh, err = NewTestHandler(datadir, rhparams)
-	return rh, datadir, cleanF, err
+	fhParams := &HandlerParams{}
+	fh, err = NewTestHandler(datadir, fhParams)
+	return fh, datadir, cleanF, err
 }
 
 func newAliceSigner() *GenericSigner {

swarm/storage/mru/id.go

@@ -29,21 +29,21 @@ import (
 
 // ID uniquely identifies an update on the network.
 type ID struct {
-	View         `json:"view"`
+	Feed         `json:"view"`
 	lookup.Epoch `json:"epoch"`
 }
 
 // ID layout:
-// View viewLength bytes
+// Feed feedLength bytes
 // Epoch EpochLength
-const idLength = viewLength + lookup.EpochLength
+const idLength = feedLength + lookup.EpochLength
 
 // Addr calculates the resource update chunk address corresponding to this ID
 func (u *ID) Addr() (updateAddr storage.Address) {
 	serializedData := make([]byte, idLength)
 	var cursor int
-	u.View.binaryPut(serializedData[cursor : cursor+viewLength])
-	cursor += viewLength
+	u.Feed.binaryPut(serializedData[cursor : cursor+feedLength])
+	cursor += feedLength
 
 	eid := u.Epoch.ID()
 	copy(serializedData[cursor:cursor+lookup.EpochLength], eid[:])
@@ -61,10 +61,10 @@ func (u *ID) binaryPut(serializedData []byte) error {
 		return NewErrorf(ErrInvalidValue, "Incorrect slice size to serialize ID. Expected %d, got %d", idLength, len(serializedData))
 	}
 	var cursor int
-	if err := u.View.binaryPut(serializedData[cursor : cursor+viewLength]); err != nil {
+	if err := u.Feed.binaryPut(serializedData[cursor : cursor+feedLength]); err != nil {
 		return err
 	}
-	cursor += viewLength
+	cursor += feedLength
 
 	epochBytes, err := u.Epoch.MarshalBinary()
 	if err != nil {
@@ -88,10 +88,10 @@ func (u *ID) binaryGet(serializedData []byte) error {
 	}
 
 	var cursor int
-	if err := u.View.binaryGet(serializedData[cursor : cursor+viewLength]); err != nil {
+	if err := u.Feed.binaryGet(serializedData[cursor : cursor+feedLength]); err != nil {
 		return err
 	}
-	cursor += viewLength
+	cursor += feedLength
 
 	if err := u.Epoch.UnmarshalBinary(serializedData[cursor : cursor+lookup.EpochLength]); err != nil {
 		return err
@@ -108,8 +108,8 @@ func (u *ID) FromValues(values Values) error {
 	u.Epoch.Level = uint8(level)
 	u.Epoch.Time, _ = strconv.ParseUint(values.Get("time"), 10, 64)
 
-	if u.View.User == (common.Address{}) {
-		return u.View.FromValues(values)
+	if u.Feed.User == (common.Address{}) {
+		return u.Feed.FromValues(values)
 	}
 	return nil
 }
@@ -119,5 +119,5 @@ func (u *ID) FromValues(values Values) error {
 func (u *ID) AppendValues(values Values) {
 	values.Set("level", fmt.Sprintf("%d", u.Epoch.Level))
 	values.Set("time", fmt.Sprintf("%d", u.Epoch.Time))
-	u.View.AppendValues(values)
+	u.Feed.AppendValues(values)
 }

swarm/storage/mru/id_test.go

@@ -8,14 +8,14 @@ import (
 
 func getTestID() *ID {
 	return &ID{
-		View:  *getTestView(),
+		Feed:  *getTestFeed(),
 		Epoch: lookup.GetFirstEpoch(1000),
 	}
 }
 
 func TestIDAddr(t *testing.T) {
-	ul := getTestID()
-	updateAddr := ul.Addr()
+	id := getTestID()
+	updateAddr := id.Addr()
 	compareByteSliceToExpectedHex(t, "updateAddr", updateAddr, "0x8b24583ec293e085f4c78aaee66d1bc5abfb8b4233304d14a349afa57af2a783")
 }
 

swarm/storage/mru/query.go

@@ -27,7 +27,7 @@ import (
 // Query is used to specify constraints when performing an update lookup
 // TimeLimit indicates an upper bound for the search. Set to 0 for "now"
 type Query struct {
-	View
+	Feed
 	Hint      lookup.Epoch
 	TimeLimit uint64
 }
@@ -41,8 +41,8 @@ func (q *Query) FromValues(values Values) error {
 	level, _ := strconv.ParseUint(values.Get("hint.level"), 10, 32)
 	q.Hint.Level = uint8(level)
 	q.Hint.Time, _ = strconv.ParseUint(values.Get("hint.time"), 10, 64)
-	if q.View.User == (common.Address{}) {
-		return q.View.FromValues(values)
+	if q.Feed.User == (common.Address{}) {
+		return q.Feed.FromValues(values)
 	}
 	return nil
 }
@@ -59,20 +59,20 @@ func (q *Query) AppendValues(values Values) {
 	if q.Hint.Time != 0 {
 		values.Set("hint.time", fmt.Sprintf("%d", q.Hint.Time))
 	}
-	q.View.AppendValues(values)
+	q.Feed.AppendValues(values)
 }
 
 // NewQuery constructs an Query structure to find updates on or before `time`
 // if time == 0, the latest update will be looked up
-func NewQuery(view *View, time uint64, hint lookup.Epoch) *Query {
+func NewQuery(feed *Feed, time uint64, hint lookup.Epoch) *Query {
 	return &Query{
 		TimeLimit: time,
-		View:      *view,
+		Feed:      *feed,
 		Hint:      hint,
 	}
 }
 
 // NewQueryLatest generates lookup parameters that look for the latest version of a resource
-func NewQueryLatest(view *View, hint lookup.Epoch) *Query {
-	return NewQuery(view, 0, hint)
+func NewQueryLatest(feed *Feed, hint lookup.Epoch) *Query {
+	return NewQuery(feed, 0, hint)
 }

swarm/storage/mru/query_test.go

@@ -21,11 +21,11 @@ import (
 )
 
 func getTestQuery() *Query {
-	ul := getTestID()
+	id := getTestID()
 	return &Query{
 		TimeLimit: 5000,
-		View:      ul.View,
-		Hint:      ul.Epoch,
+		Feed:      id.Feed,
+		Hint:      id.Epoch,
 	}
 }
 

swarm/storage/mru/request.go

@@ -29,10 +29,10 @@ import (
 
 // Request represents an update and/or resource create message
 type Request struct {
-	ResourceUpdate // actual content that will be put on the chunk, less signature
-	Signature      *Signature
-	idAddr         storage.Address // cached chunk address for the update (not serialized, for internal use)
-	binaryData     []byte          // cached serialized data (does not get serialized again!, for efficiency/internal use)
+	Update     // actual content that will be put on the chunk, less signature
+	Signature  *Signature
+	idAddr     storage.Address // cached chunk address for the update (not serialized, for internal use)
+	binaryData []byte          // cached serialized data (does not get serialized again!, for efficiency/internal use)
 }
 
 // updateRequestJSON represents a JSON-serialized UpdateRequest
@@ -44,11 +44,11 @@ type updateRequestJSON struct {
 }
 
 // Request layout
-// resourceUpdate bytes
+// Update bytes
 // SignatureLength bytes
 const minimumSignedUpdateLength = minimumUpdateDataLength + signatureLength
 
-// NewFirstRequest returns a ready to sign request to publish a first update
+// NewFirstRequest returns a ready to sign request to publish a first feed update
 func NewFirstRequest(topic Topic) *Request {
 
 	request := new(Request)
@@ -56,7 +56,7 @@ func NewFirstRequest(topic Topic) *Request {
 	// get the current time
 	now := TimestampProvider.Now().Time
 	request.Epoch = lookup.GetFirstEpoch(now)
-	request.View.Topic = topic
+	request.Feed.Topic = topic
 	request.Header.Version = ProtocolVersion
 
 	return request
@@ -88,7 +88,7 @@ func (r *Request) Verify() (err error) {
 	}
 
 	// get the address of the signer (which also checks that it's a valid signature)
-	r.View.User, err = getUserAddr(digest, *r.Signature)
+	r.Feed.User, err = getUserAddr(digest, *r.Signature)
 	if err != nil {
 		return err
 	}
@@ -105,7 +105,7 @@ func (r *Request) Verify() (err error) {
 
 // Sign executes the signature to validate the resource
 func (r *Request) Sign(signer Signer) error {
-	r.View.User = signer.Address()
+	r.Feed.User = signer.Address()
 	r.binaryData = nil           //invalidate serialized data
 	digest, err := r.GetDigest() // computes digest and serializes into .binaryData
 	if err != nil {
@@ -139,10 +139,10 @@ func (r *Request) GetDigest() (result common.Hash, err error) {
 	hasher := hashPool.Get().(hash.Hash)
 	defer hashPool.Put(hasher)
 	hasher.Reset()
-	dataLength := r.ResourceUpdate.binaryLength()
+	dataLength := r.Update.binaryLength()
 	if r.binaryData == nil {
 		r.binaryData = make([]byte, dataLength+signatureLength)
-		if err := r.ResourceUpdate.binaryPut(r.binaryData[:dataLength]); err != nil {
+		if err := r.Update.binaryPut(r.binaryData[:dataLength]); err != nil {
 			return result, err
 		}
 	}
@@ -161,10 +161,10 @@ func (r *Request) toChunk() (storage.Chunk, error) {
 		return nil, NewError(ErrInvalidSignature, "toChunk called without a valid signature or payload data. Call .Sign() first.")
 	}
 
-	resourceUpdateLength := r.ResourceUpdate.binaryLength()
+	updateLength := r.Update.binaryLength()
 
 	// signature is the last item in the chunk data
-	copy(r.binaryData[resourceUpdateLength:], r.Signature[:])
+	copy(r.binaryData[updateLength:], r.Signature[:])
 
 	chunk := storage.NewChunk(r.idAddr, r.binaryData)
 	return chunk, nil
@@ -175,13 +175,13 @@ func (r *Request) fromChunk(updateAddr storage.Address, chunkdata []byte) error
 	// for update chunk layout see Request definition
 
 	//deserialize the resource update portion
-	if err := r.ResourceUpdate.binaryGet(chunkdata[:len(chunkdata)-signatureLength]); err != nil {
+	if err := r.Update.binaryGet(chunkdata[:len(chunkdata)-signatureLength]); err != nil {
 		return err
 	}
 
 	// Extract the signature
 	var signature *Signature
-	cursor := r.ResourceUpdate.binaryLength()
+	cursor := r.Update.binaryLength()
 	sigdata := chunkdata[cursor : cursor+signatureLength]
 	if len(sigdata) > 0 {
 		signature = &Signature{}
@@ -209,7 +209,7 @@ func (r *Request) FromValues(values Values, data []byte) error {
 		r.Signature = new(Signature)
 		copy(r.Signature[:], signatureBytes)
 	}
-	err = r.ResourceUpdate.FromValues(values, data)
+	err = r.Update.FromValues(values, data)
 	if err != nil {
 		return err
 	}
@@ -223,7 +223,7 @@ func (r *Request) AppendValues(values Values) []byte {
 	if r.Signature != nil {
 		values.Set("signature", hexutil.Encode(r.Signature[:]))
 	}
-	return r.ResourceUpdate.AppendValues(values)
+	return r.Update.AppendValues(values)
 }
 
 // fromJSON takes an update request JSON and populates an UpdateRequest

swarm/storage/mru/request_test.go

@@ -53,25 +53,25 @@ func TestEncodingDecodingUpdateRequests(t *testing.T) {
 	charlie := newCharlieSigner() //Charlie
 	bob := newBobSigner()         //Bob
 
-	// Create a resource to our good guy Charlie's name
-	topic, _ := NewTopic("a good resource name", nil)
-	createRequest := NewFirstRequest(topic)
-	createRequest.User = charlie.Address()
+	// Create a feed to our good guy Charlie's name
+	topic, _ := NewTopic("a good topic name", nil)
+	firstRequest := NewFirstRequest(topic)
+	firstRequest.User = charlie.Address()
 
 	// We now encode the create message to simulate we send it over the wire
-	messageRawData, err := createRequest.MarshalJSON()
+	messageRawData, err := firstRequest.MarshalJSON()
 	if err != nil {
-		t.Fatalf("Error encoding create resource request: %s", err)
+		t.Fatalf("Error encoding first feed update request: %s", err)
 	}
 
 	// ... the message arrives and is decoded...
-	var recoveredCreateRequest Request
-	if err := recoveredCreateRequest.UnmarshalJSON(messageRawData); err != nil {
-		t.Fatalf("Error decoding create resource request: %s", err)
+	var recoveredFirstRequest Request
+	if err := recoveredFirstRequest.UnmarshalJSON(messageRawData); err != nil {
+		t.Fatalf("Error decoding first feed update request: %s", err)
 	}
 
 	// ... but verification should fail because it is not signed!
-	if err := recoveredCreateRequest.Verify(); err == nil {
+	if err := recoveredFirstRequest.Verify(); err == nil {
 		t.Fatal("Expected Verify to fail since the message is not signed")
 	}
 
@@ -85,13 +85,13 @@ func TestEncodingDecodingUpdateRequests(t *testing.T) {
 	//Put together an unsigned update request that we will serialize to send it to the signer.
 	data := []byte("This hour's update: Swarm 99.0 has been released!")
 	request := &Request{
-		ResourceUpdate: ResourceUpdate{
+		Update: Update{
 			ID: ID{
 				Epoch: lookup.Epoch{
 					Time:  1000,
 					Level: 1,
 				},
-				View: createRequest.ResourceUpdate.View,
+				Feed: firstRequest.Update.Feed,
 			},
 			data: data,
 		},
@@ -191,7 +191,7 @@ func TestEncodingDecodingUpdateRequests(t *testing.T) {
 
 func getTestRequest() *Request {
 	return &Request{
-		ResourceUpdate: *getTestResourceUpdate(),
+		Update: *getTestFeedUpdate(),
 	}
 }
 
@@ -258,7 +258,7 @@ func TestReverse(t *testing.T) {
 	defer teardownTest()
 
 	topic, _ := NewTopic("Cervantes quotes", nil)
-	view := View{
+	view := Feed{
 		Topic: topic,
 		User:  signer.Address(),
 	}
@@ -266,7 +266,7 @@ func TestReverse(t *testing.T) {
 	data := []byte("Donde una puerta se cierra, otra se abre")
 
 	request := new(Request)
-	request.View = view
+	request.Feed = view
 	request.Epoch = epoch
 	request.data = data
 
@@ -291,15 +291,15 @@ func TestReverse(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	recoveredaddress, err := getUserAddr(checkdigest, *checkUpdate.Signature)
+	recoveredAddr, err := getUserAddr(checkdigest, *checkUpdate.Signature)
 	if err != nil {
 		t.Fatalf("Retrieve address from signature fail: %v", err)
 	}
-	originaladdress := crypto.PubkeyToAddress(signer.PrivKey.PublicKey)
+	originalAddr := crypto.PubkeyToAddress(signer.PrivKey.PublicKey)
 
 	// check that the metadata retrieved from the chunk matches what we gave it
-	if recoveredaddress != originaladdress {
-		t.Fatalf("addresses dont match: %x != %x", originaladdress, recoveredaddress)
+	if recoveredAddr != originalAddr {
+		t.Fatalf("addresses dont match: %x != %x", originalAddr, recoveredAddr)
 	}
 
 	if !bytes.Equal(key[:], chunk.Address()[:]) {

swarm/storage/mru/testutil.go

@@ -27,7 +27,7 @@ import (
 )
 
 const (
-	testDbDirName = "mru"
+	testDbDirName = "feeds"
 )
 
 type TestHandler struct {
@@ -52,20 +52,20 @@ func newFakeNetFetcher(context.Context, storage.Address, *sync.Map) storage.NetF
 // NewTestHandler creates Handler object to be used for testing purposes.
 func NewTestHandler(datadir string, params *HandlerParams) (*TestHandler, error) {
 	path := filepath.Join(datadir, testDbDirName)
-	rh := NewHandler(params)
+	fh := NewHandler(params)
 	localstoreparams := storage.NewDefaultLocalStoreParams()
 	localstoreparams.Init(path)
 	localStore, err := storage.NewLocalStore(localstoreparams, nil)
 	if err != nil {
 		return nil, fmt.Errorf("localstore create fail, path %s: %v", path, err)
 	}
-	localStore.Validators = append(localStore.Validators, storage.NewContentAddressValidator(storage.MakeHashFunc(resourceHashAlgorithm)))
-	localStore.Validators = append(localStore.Validators, rh)
+	localStore.Validators = append(localStore.Validators, storage.NewContentAddressValidator(storage.MakeHashFunc(feedsHashAlgorithm)))
+	localStore.Validators = append(localStore.Validators, fh)
 	netStore, err := storage.NewNetStore(localStore, nil)
 	if err != nil {
 		return nil, err
 	}
 	netStore.NewNetFetcherFunc = newFakeNetFetcher
-	rh.SetStore(netStore)
-	return &TestHandler{rh}, nil
+	fh.SetStore(netStore)
+	return &TestHandler{fh}, nil
 }

swarm/storage/mru/topic.go

@@ -29,7 +29,7 @@ import (
 // TopicLength establishes the max length of a topic string
 const TopicLength = storage.AddressLength
 
-// Topic represents what a resource talks about
+// Topic represents what a feed is about
 type Topic [TopicLength]byte
 
 // ErrTopicTooLong is returned when creating a topic with a name/related content too long

swarm/storage/mru/update.go

@@ -34,8 +34,8 @@ type Header struct {
 	Padding [headerLength - 1]uint8 // reserved for future use
 }
 
-// ResourceUpdate encapsulates the information sent as part of a resource update
-type ResourceUpdate struct {
+// Update encapsulates the information sent as part of a feed update
+type Update struct {
 	Header Header //
 	ID            // Resource update identifying information
 	data   []byte // actual data payload
@@ -44,15 +44,15 @@ type ResourceUpdate struct {
 const minimumUpdateDataLength = idLength + headerLength + 1
 const maxUpdateDataLength = chunk.DefaultSize - signatureLength - idLength - headerLength
 
-// binaryPut serializes the resource update information into the given slice
-func (r *ResourceUpdate) binaryPut(serializedData []byte) error {
+// binaryPut serializes the feed update information into the given slice
+func (r *Update) binaryPut(serializedData []byte) error {
 	datalength := len(r.data)
 	if datalength == 0 {
-		return NewError(ErrInvalidValue, "cannot update a resource with no data")
+		return NewError(ErrInvalidValue, "a feed update must contain data")
 	}
 
 	if datalength > maxUpdateDataLength {
-		return NewErrorf(ErrInvalidValue, "data is too big (length=%d). Max length=%d", datalength, maxUpdateDataLength)
+		return NewErrorf(ErrInvalidValue, "feed update data is too big (length=%d). Max length=%d", datalength, maxUpdateDataLength)
 	}
 
 	if len(serializedData) != r.binaryLength() {
@@ -79,12 +79,12 @@ func (r *ResourceUpdate) binaryPut(serializedData []byte) error {
 }
 
 // binaryLength returns the expected number of bytes this structure will take to encode
-func (r *ResourceUpdate) binaryLength() int {
+func (r *Update) binaryLength() int {
 	return idLength + headerLength + len(r.data)
 }
 
 // binaryGet populates this instance from the information contained in the passed byte slice
-func (r *ResourceUpdate) binaryGet(serializedData []byte) error {
+func (r *Update) binaryGet(serializedData []byte) error {
 	if len(serializedData) < minimumUpdateDataLength {
 		return NewErrorf(ErrNothingToReturn, "chunk less than %d bytes cannot be a resource update chunk", minimumUpdateDataLength)
 	}
@@ -116,7 +116,7 @@ func (r *ResourceUpdate) binaryGet(serializedData []byte) error {
 
 // FromValues deserializes this instance from a string key-value store
 // useful to parse query strings
-func (r *ResourceUpdate) FromValues(values Values, data []byte) error {
+func (r *Update) FromValues(values Values, data []byte) error {
 	r.data = data
 	version, _ := strconv.ParseUint(values.Get("protocolVersion"), 10, 32)
 	r.Header.Version = uint8(version)
@@ -125,7 +125,7 @@ func (r *ResourceUpdate) FromValues(values Values, data []byte) error {
 
 // AppendValues serializes this structure into the provided string key-value store
 // useful to build query strings
-func (r *ResourceUpdate) AppendValues(values Values) []byte {
+func (r *Update) AppendValues(values Values) []byte {
 	r.ID.AppendValues(values)
 	values.Set("protocolVersion", fmt.Sprintf("%d", r.Header.Version))
 	return r.data

swarm/storage/mru/update_test.go

@@ -20,31 +20,31 @@ import (
 	"testing"
 )
 
-func getTestResourceUpdate() *ResourceUpdate {
-	return &ResourceUpdate{
+func getTestFeedUpdate() *Update {
+	return &Update{
 		ID:   *getTestID(),
 		data: []byte("El que lee mucho y anda mucho, ve mucho y sabe mucho"),
 	}
 }
 
-func TestResourceUpdateSerializer(t *testing.T) {
-	testBinarySerializerRecovery(t, getTestResourceUpdate(), "0x0000000000000000776f726c64206e657773207265706f72742c20657665727920686f7572000000876a8936a7cd0b79ef0735ad0896c1afe278781ce803000000000019456c20717565206c6565206d7563686f207920616e6461206d7563686f2c207665206d7563686f20792073616265206d7563686f")
+func TestUpdateSerializer(t *testing.T) {
+	testBinarySerializerRecovery(t, getTestFeedUpdate(), "0x0000000000000000776f726c64206e657773207265706f72742c20657665727920686f7572000000876a8936a7cd0b79ef0735ad0896c1afe278781ce803000000000019456c20717565206c6565206d7563686f207920616e6461206d7563686f2c207665206d7563686f20792073616265206d7563686f")
 }
 
-func TestResourceUpdateLengthCheck(t *testing.T) {
-	testBinarySerializerLengthCheck(t, getTestResourceUpdate())
+func TestUpdateLengthCheck(t *testing.T) {
+	testBinarySerializerLengthCheck(t, getTestFeedUpdate())
 	// Test fail if update is too big
-	update := getTestResourceUpdate()
+	update := getTestFeedUpdate()
 	update.data = make([]byte, maxUpdateDataLength+100)
 	serialized := make([]byte, update.binaryLength())
 	if err := update.binaryPut(serialized); err == nil {
-		t.Fatal("Expected resourceUpdate.binaryPut to fail since update is too big")
+		t.Fatal("Expected update.binaryPut to fail since update is too big")
 	}
 
 	// test fail if data is empty or nil
 	update.data = nil
 	serialized = make([]byte, update.binaryLength())
 	if err := update.binaryPut(serialized); err == nil {
-		t.Fatal("Expected resourceUpdate.binaryPut to fail since data is empty")
+		t.Fatal("Expected update.binaryPut to fail since data is empty")
 	}
 }

swarm/storage/mru/view.go

@@ -25,8 +25,8 @@ import (
 	"github.com/ethereum/go-ethereum/swarm/storage"
 )
 
-// View represents a particular user's view of a resource
-type View struct {
+// Feed represents a particular user's view of a resource
+type Feed struct {
 	Topic Topic          `json:"topic"`
 	User  common.Address `json:"user"`
 }
@@ -34,11 +34,11 @@ type View struct {
 // View layout:
 // TopicLength bytes
 // userAddr common.AddressLength bytes
-const viewLength = TopicLength + common.AddressLength
+const feedLength = TopicLength + common.AddressLength
 
-// mapKey calculates a unique id for this view for the cache map in `Handler`
-func (u *View) mapKey() uint64 {
-	serializedData := make([]byte, viewLength)
+// mapKey calculates a unique id for this feed. Used by the cache map in `Handler`
+func (u *Feed) mapKey() uint64 {
+	serializedData := make([]byte, feedLength)
 	u.binaryPut(serializedData)
 	hasher := hashPool.Get().(hash.Hash)
 	defer hashPool.Put(hasher)
@@ -48,10 +48,10 @@ func (u *View) mapKey() uint64 {
 	return *(*uint64)(unsafe.Pointer(&hash[0]))
 }
 
-// binaryPut serializes this View instance into the provided slice
-func (u *View) binaryPut(serializedData []byte) error {
-	if len(serializedData) != viewLength {
-		return NewErrorf(ErrInvalidValue, "Incorrect slice size to serialize View. Expected %d, got %d", viewLength, len(serializedData))
+// binaryPut serializes this Feed instance into the provided slice
+func (u *Feed) binaryPut(serializedData []byte) error {
+	if len(serializedData) != feedLength {
+		return NewErrorf(ErrInvalidValue, "Incorrect slice size to serialize View. Expected %d, got %d", feedLength, len(serializedData))
 	}
 	var cursor int
 	copy(serializedData[cursor:cursor+TopicLength], u.Topic[:TopicLength])
@@ -64,14 +64,14 @@ func (u *View) binaryPut(serializedData []byte) error {
 }
 
 // binaryLength returns the expected size of this structure when serialized
-func (u *View) binaryLength() int {
-	return viewLength
+func (u *Feed) binaryLength() int {
+	return feedLength
 }
 
 // binaryGet restores the current instance from the information contained in the passed slice
-func (u *View) binaryGet(serializedData []byte) error {
-	if len(serializedData) != viewLength {
-		return NewErrorf(ErrInvalidValue, "Incorrect slice size to read View. Expected %d, got %d", viewLength, len(serializedData))
+func (u *Feed) binaryGet(serializedData []byte) error {
+	if len(serializedData) != feedLength {
+		return NewErrorf(ErrInvalidValue, "Incorrect slice size to read Feed. Expected %d, got %d", feedLength, len(serializedData))
 	}
 
 	var cursor int
@@ -84,16 +84,16 @@ func (u *View) binaryGet(serializedData []byte) error {
 	return nil
 }
 
-// Hex serializes the View to a hex string
-func (u *View) Hex() string {
-	serializedData := make([]byte, viewLength)
+// Hex serializes the Feed to a hex string
+func (u *Feed) Hex() string {
+	serializedData := make([]byte, feedLength)
 	u.binaryPut(serializedData)
 	return hexutil.Encode(serializedData)
 }
 
 // FromValues deserializes this instance from a string key-value store
 // useful to parse query strings
-func (u *View) FromValues(values Values) (err error) {
+func (u *Feed) FromValues(values Values) (err error) {
 	topic := values.Get("topic")
 	if topic != "" {
 		if err := u.Topic.FromHex(values.Get("topic")); err != nil {
@@ -119,7 +119,7 @@ func (u *View) FromValues(values Values) (err error) {
 
 // AppendValues serializes this structure into the provided string key-value store
 // useful to build query strings
-func (u *View) AppendValues(values Values) {
+func (u *Feed) AppendValues(values Values) {
 	values.Set("topic", u.Topic.Hex())
 	values.Set("user", u.User.Hex())
 }

swarm/storage/mru/view_test.go

@@ -19,18 +19,18 @@ import (
 	"testing"
 )
 
-func getTestView() *View {
+func getTestFeed() *Feed {
 	topic, _ := NewTopic("world news report, every hour", nil)
-	return &View{
+	return &Feed{
 		Topic: topic,
 		User:  newCharlieSigner().Address(),
 	}
 }
 
-func TestViewSerializerDeserializer(t *testing.T) {
-	testBinarySerializerRecovery(t, getTestView(), "0x776f726c64206e657773207265706f72742c20657665727920686f7572000000876a8936a7cd0b79ef0735ad0896c1afe278781c")
+func TestFeedSerializerDeserializer(t *testing.T) {
+	testBinarySerializerRecovery(t, getTestFeed(), "0x776f726c64206e657773207265706f72742c20657665727920686f7572000000876a8936a7cd0b79ef0735ad0896c1afe278781c")
 }
 
-func TestMetadataSerializerLengthCheck(t *testing.T) {
-	testBinarySerializerLengthCheck(t, getTestView())
+func TestFeedSerializerLengthCheck(t *testing.T) {
+	testBinarySerializerLengthCheck(t, getTestFeed())
 }