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feat: indicate if response will be streamable on routing.FindProviders
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@hacdias
hacdias committed May 16, 2023
1 parent 9b8e63b commit 4624b60
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Showing 3 changed files with 19 additions and 13 deletions.
6 changes: 3 additions & 3 deletions routing/http/client/client_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -27,8 +27,8 @@ import (

type mockContentRouter struct{ mock.Mock }

func (m *mockContentRouter) FindProviders(ctx context.Context, key cid.Cid) (iter.ResultIter[types.ProviderResponse], error) {
args := m.Called(ctx, key)
func (m *mockContentRouter) FindProviders(ctx context.Context, key cid.Cid, stream bool) (iter.ResultIter[types.ProviderResponse], error) {
args := m.Called(ctx, key, stream)
return args.Get(0).(iter.ResultIter[types.ProviderResponse]), args.Error(1)
}
func (m *mockContentRouter) ProvideBitswap(ctx context.Context, req *server.BitswapWriteProvideRequest) (time.Duration, error) {
Expand Down Expand Up @@ -302,7 +302,7 @@ func TestClient_FindProviders(t *testing.T) {

findProvsIter := iter.FromSlice(c.routerProvs)

router.On("FindProviders", mock.Anything, cid).
router.On("FindProviders", mock.Anything, cid, c.expStreamingResponse).
Return(findProvsIter, c.routerErr)

provsIter, err := client.FindProviders(ctx, cid)
Expand Down
10 changes: 8 additions & 2 deletions routing/http/server/server.go
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Original file line number Diff line number Diff line change
Expand Up @@ -41,7 +41,9 @@ type FindProvidersAsyncResponse struct {
}

type ContentRouter interface {
FindProviders(ctx context.Context, key cid.Cid) (iter.ResultIter[types.ProviderResponse], error)
// FindProviders searches for peers who are able to provide a given key. Stream
// indicates whether or not this request will be responded as a stream.
FindProviders(ctx context.Context, key cid.Cid, stream bool) (iter.ResultIter[types.ProviderResponse], error)
ProvideBitswap(ctx context.Context, req *BitswapWriteProvideRequest) (time.Duration, error)
Provide(ctx context.Context, req *WriteProvideRequest) (types.ProviderResponse, error)
}
Expand Down Expand Up @@ -170,9 +172,11 @@ func (s *server) findProviders(w http.ResponseWriter, httpReq *http.Request) {

var supportsNDJSON bool
var supportsJSON bool
var streaming bool
acceptHeaders := httpReq.Header.Values("Accept")
if len(acceptHeaders) == 0 {
handlerFunc = s.findProvidersJSON
streaming = false
} else {
for _, acceptHeader := range acceptHeaders {
for _, accept := range strings.Split(acceptHeader, ",") {
Expand All @@ -193,15 +197,17 @@ func (s *server) findProviders(w http.ResponseWriter, httpReq *http.Request) {

if supportsNDJSON && !s.disableNDJSON {
handlerFunc = s.findProvidersNDJSON
streaming = true
} else if supportsJSON {
handlerFunc = s.findProvidersJSON
streaming = false
} else {
writeErr(w, "FindProviders", http.StatusBadRequest, errors.New("no supported content types"))
return
}
}

provIter, err := s.svc.FindProviders(httpReq.Context(), cid)
provIter, err := s.svc.FindProviders(httpReq.Context(), cid, streaming)
if err != nil {
writeErr(w, "FindProviders", http.StatusInternalServerError, fmt.Errorf("delegate error: %w", err))
return
Expand Down
16 changes: 8 additions & 8 deletions routing/http/server/server_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -33,7 +33,7 @@ func TestHeaders(t *testing.T) {
cb, err := cid.Decode(c)
require.NoError(t, err)

router.On("FindProviders", mock.Anything, cb).
router.On("FindProviders", mock.Anything, cb, false).
Return(results, nil)

resp, err := http.Get(serverAddr + ProvidePath + c)
Expand Down Expand Up @@ -63,7 +63,7 @@ func TestResponse(t *testing.T) {
cid, err := cid.Decode(cidStr)
require.NoError(t, err)

runTest := func(t *testing.T, contentType string, expected string) {
runTest := func(t *testing.T, contentType string, expectedStream bool, expectedBody string) {
t.Parallel()

results := iter.FromSlice([]iter.Result[types.ProviderResponse]{
Expand All @@ -85,7 +85,7 @@ func TestResponse(t *testing.T) {
server := httptest.NewServer(Handler(router))
t.Cleanup(server.Close)
serverAddr := "http://" + server.Listener.Addr().String()
router.On("FindProviders", mock.Anything, cid).Return(results, nil)
router.On("FindProviders", mock.Anything, cid, expectedStream).Return(results, nil)
urlStr := serverAddr + ProvidePath + cidStr

req, err := http.NewRequest(http.MethodGet, urlStr, nil)
Expand All @@ -101,22 +101,22 @@ func TestResponse(t *testing.T) {
body, err := io.ReadAll(resp.Body)
require.NoError(t, err)

require.Equal(t, string(body), expected)
require.Equal(t, string(body), expectedBody)
}

t.Run("JSON Response", func(t *testing.T) {
runTest(t, mediaTypeJSON, `{"Providers":[{"Protocol":"transport-bitswap","Schema":"bitswap","ID":"12D3KooWM8sovaEGU1bmiWGWAzvs47DEcXKZZTuJnpQyVTkRs2Vn","Addrs":[]},{"Protocol":"transport-bitswap","Schema":"bitswap","ID":"12D3KooWM8sovaEGU1bmiWGWAzvs47DEcXKZZTuJnpQyVTkRs2Vz","Addrs":[]}]}`)
runTest(t, mediaTypeJSON, false, `{"Providers":[{"Protocol":"transport-bitswap","Schema":"bitswap","ID":"12D3KooWM8sovaEGU1bmiWGWAzvs47DEcXKZZTuJnpQyVTkRs2Vn","Addrs":[]},{"Protocol":"transport-bitswap","Schema":"bitswap","ID":"12D3KooWM8sovaEGU1bmiWGWAzvs47DEcXKZZTuJnpQyVTkRs2Vz","Addrs":[]}]}`)
})

t.Run("NDJSON Response", func(t *testing.T) {
runTest(t, mediaTypeNDJSON, `{"Protocol":"transport-bitswap","Schema":"bitswap","ID":"12D3KooWM8sovaEGU1bmiWGWAzvs47DEcXKZZTuJnpQyVTkRs2Vn","Addrs":[]}`+"\n"+`{"Protocol":"transport-bitswap","Schema":"bitswap","ID":"12D3KooWM8sovaEGU1bmiWGWAzvs47DEcXKZZTuJnpQyVTkRs2Vz","Addrs":[]}`+"\n")
runTest(t, mediaTypeNDJSON, true, `{"Protocol":"transport-bitswap","Schema":"bitswap","ID":"12D3KooWM8sovaEGU1bmiWGWAzvs47DEcXKZZTuJnpQyVTkRs2Vn","Addrs":[]}`+"\n"+`{"Protocol":"transport-bitswap","Schema":"bitswap","ID":"12D3KooWM8sovaEGU1bmiWGWAzvs47DEcXKZZTuJnpQyVTkRs2Vz","Addrs":[]}`+"\n")
})
}

type mockContentRouter struct{ mock.Mock }

func (m *mockContentRouter) FindProviders(ctx context.Context, key cid.Cid) (iter.ResultIter[types.ProviderResponse], error) {
args := m.Called(ctx, key)
func (m *mockContentRouter) FindProviders(ctx context.Context, key cid.Cid, stream bool) (iter.ResultIter[types.ProviderResponse], error) {
args := m.Called(ctx, key, stream)
return args.Get(0).(iter.ResultIter[types.ProviderResponse]), args.Error(1)
}
func (m *mockContentRouter) ProvideBitswap(ctx context.Context, req *BitswapWriteProvideRequest) (time.Duration, error) {
Expand Down

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