diff options
Diffstat (limited to 'swarm/api/client/client_test.go')
| -rw-r--r-- | swarm/api/client/client_test.go | 112 |
1 files changed, 85 insertions, 27 deletions
diff --git a/swarm/api/client/client_test.go b/swarm/api/client/client_test.go index 76b349397..39f6e4797 100644 --- a/swarm/api/client/client_test.go +++ b/swarm/api/client/client_test.go @@ -25,13 +25,13 @@ import ( "sort" "testing" + "github.com/ethereum/go-ethereum/swarm/storage" "github.com/ethereum/go-ethereum/swarm/storage/feed/lookup" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/crypto" "github.com/ethereum/go-ethereum/swarm/api" swarmhttp "github.com/ethereum/go-ethereum/swarm/api/http" - "github.com/ethereum/go-ethereum/swarm/multihash" "github.com/ethereum/go-ethereum/swarm/storage/feed" ) @@ -368,58 +368,99 @@ func newTestSigner() (*feed.GenericSigner, error) { return feed.NewGenericSigner(privKey), nil } -// test the transparent resolving of multihash feed updates with bzz:// scheme +// Test the transparent resolving of feed updates with bzz:// scheme // -// first upload data, and store the multihash to the resulting manifest in a feed update -// retrieving the update with the multihash should return the manifest pointing directly to the data +// First upload data to bzz:, and store the Swarm hash to the resulting manifest in a feed update. +// This effectively uses a feed to store a pointer to content rather than the content itself +// Retrieving the update with the Swarm hash should return the manifest pointing directly to the data // and raw retrieve of that hash should return the data -func TestClientCreateFeedMultihash(t *testing.T) { +func TestClientBzzWithFeed(t *testing.T) { signer, _ := newTestSigner() + // Initialize a Swarm test server srv := swarmhttp.NewTestSwarmServer(t, serverFunc, nil) - client := NewClient(srv.URL) + swarmClient := NewClient(srv.URL) defer srv.Close() - // add the data our multihash aliased manifest will point to - databytes := []byte("bar") - - swarmHash, err := client.UploadRaw(bytes.NewReader(databytes), int64(len(databytes)), false) + // put together some data for our test: + dataBytes := []byte(` + // + // Create some data our manifest will point to. Data that could be very big and wouldn't fit in a feed update. + // So what we are going to do is upload it to Swarm bzz:// and obtain a **manifest hash** pointing to it: + // + // MANIFEST HASH --> DATA + // + // Then, we store that **manifest hash** into a Swarm Feed update. Once we have done this, + // we can use the **feed manifest hash** in bzz:// instead, this way: bzz://feed-manifest-hash. + // + // FEED MANIFEST HASH --> MANIFEST HASH --> DATA + // + // Given that we can update the feed at any time with a new **manifest hash** but the **feed manifest hash** + // stays constant, we have effectively created a fixed address to changing content. (Applause) + // + // FEED MANIFEST HASH (the same) --> MANIFEST HASH(2) --> DATA(2) + // + `) + + // Create a virtual File out of memory containing the above data + f := &File{ + ReadCloser: ioutil.NopCloser(bytes.NewReader(dataBytes)), + ManifestEntry: api.ManifestEntry{ + ContentType: "text/plain", + Mode: 0660, + Size: int64(len(dataBytes)), + }, + } + + // upload data to bzz:// and retrieve the content-addressed manifest hash, hex-encoded. + manifestAddressHex, err := swarmClient.Upload(f, "", false) if err != nil { - t.Fatalf("Error uploading raw test data: %s", err) + t.Fatalf("Error creating manifest: %s", err) } - s := common.FromHex(swarmHash) - mh := multihash.ToMultihash(s) + // convert the hex-encoded manifest hash to a 32-byte slice + manifestAddress := common.FromHex(manifestAddressHex) + + if len(manifestAddress) != storage.AddressLength { + t.Fatalf("Something went wrong. Got a hash of an unexpected length. Expected %d bytes. Got %d", storage.AddressLength, len(manifestAddress)) + } - // our feed topic - topic, _ := feed.NewTopic("foo.eth", nil) + // Now create a **feed manifest**. For that, we need a topic: + topic, _ := feed.NewTopic("interesting topic indeed", nil) - createRequest := feed.NewFirstRequest(topic) + // Build a feed request to update data + request := feed.NewFirstRequest(topic) - createRequest.SetData(mh) - if err := createRequest.Sign(signer); err != nil { + // Put the 32-byte address of the manifest into the feed update + request.SetData(manifestAddress) + + // Sign the update + if err := request.Sign(signer); err != nil { t.Fatalf("Error signing update: %s", err) } - feedManifestHash, err := client.CreateFeedWithManifest(createRequest) - + // Publish the update and at the same time request a **feed manifest** to be created + feedManifestAddressHex, err := swarmClient.CreateFeedWithManifest(request) if err != nil { t.Fatalf("Error creating feed manifest: %s", err) } - correctManifestAddrHex := "bb056a5264c295c2b0f613c8409b9c87ce9d71576ace02458160df4cc894210b" - if feedManifestHash != correctManifestAddrHex { - t.Fatalf("Response feed manifest mismatch, expected '%s', got '%s'", correctManifestAddrHex, feedManifestHash) + // Check we have received the exact **feed manifest** to be expected + // given the topic and user signing the updates: + correctFeedManifestAddrHex := "747c402e5b9dc715a25a4393147512167bab018a007fad7cdcd9adc7fce1ced2" + if feedManifestAddressHex != correctFeedManifestAddrHex { + t.Fatalf("Response feed manifest mismatch, expected '%s', got '%s'", correctFeedManifestAddrHex, feedManifestAddressHex) } // Check we get a not found error when trying to get feed updates with a made-up manifest - _, err = client.QueryFeed(nil, "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb") + _, err = swarmClient.QueryFeed(nil, "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb") if err != ErrNoFeedUpdatesFound { t.Fatalf("Expected to receive ErrNoFeedUpdatesFound error. Got: %s", err) } - reader, err := client.QueryFeed(nil, correctManifestAddrHex) + // If we query the feed directly we should get **manifest hash** back: + reader, err := swarmClient.QueryFeed(nil, correctFeedManifestAddrHex) if err != nil { t.Fatalf("Error retrieving feed updates: %s", err) } @@ -428,10 +469,27 @@ func TestClientCreateFeedMultihash(t *testing.T) { if err != nil { t.Fatal(err) } - if !bytes.Equal(mh, gotData) { - t.Fatalf("Expected: %v, got %v", mh, gotData) + + //Check that indeed the **manifest hash** is retrieved + if !bytes.Equal(manifestAddress, gotData) { + t.Fatalf("Expected: %v, got %v", manifestAddress, gotData) + } + + // Now the final test we were looking for: Use bzz://<feed-manifest> and that should resolve all manifests + // and return the original data directly: + f, err = swarmClient.Download(feedManifestAddressHex, "") + if err != nil { + t.Fatal(err) + } + gotData, err = ioutil.ReadAll(f) + if err != nil { + t.Fatal(err) } + // Check that we get back the original data: + if !bytes.Equal(dataBytes, gotData) { + t.Fatalf("Expected: %v, got %v", manifestAddress, gotData) + } } // TestClientCreateUpdateFeed will check that feeds can be created and updated via the HTTP client. |