From cc8cce1b614df0a1e6f1a702ae61ec8956040fbe Mon Sep 17 00:00:00 2001 From: Asim Aslam Date: Wed, 23 Jun 2021 15:56:17 +0100 Subject: [PATCH] add crypto news --- crypto/handler/crypto.go | 55 ++++ crypto/proto/crypto.pb.go | 429 +++++++++++++++++++++++++------- crypto/proto/crypto.pb.micro.go | 17 ++ crypto/proto/crypto.proto | 27 ++ 4 files changed, 439 insertions(+), 89 deletions(-) diff --git a/crypto/handler/crypto.go b/crypto/handler/crypto.go index 91126e4..1870961 100644 --- a/crypto/handler/crypto.go +++ b/crypto/handler/crypto.go @@ -20,6 +20,20 @@ var ( re = regexp.MustCompile(`\d{4}-\d{2}-\d{2}`) ) +type Article struct { + Title string + Description string + Url string + Source string + Date string +} + +type News struct { + Ticker string + Limit int32 + News []*Article +} + type Crypto struct { Api string Key string @@ -76,6 +90,47 @@ func New() *Crypto { } } +func (c *Crypto) News(ctx context.Context, req *pb.NewsRequest, rsp *pb.NewsResponse) error { + if len(req.Symbol) <= 0 { + return errors.BadRequest("crypto.news", "invalid symbol") + } + + uri := fmt.Sprintf("%snews/cryptocurrency/%s?apikey=%s", c.Api, req.Symbol, c.Key) + + resp, err := http.Get(uri) + if err != nil { + logger.Errorf("Failed to get news: %v\n", err) + return errors.InternalServerError("crypto.news", "failed to get news") + } + defer resp.Body.Close() + + b, _ := ioutil.ReadAll(resp.Body) + + if resp.StatusCode != 200 { + logger.Errorf("Failed to get news (non 200): %d %v\n", resp.StatusCode, string(b)) + return errors.InternalServerError("crypto.news", "failed to get news") + } + + var respBody News + + if err := json.Unmarshal(b, &respBody); err != nil { + logger.Errorf("Failed to unmarshal news: %v\n", err) + return errors.InternalServerError("crypto.news", "failed to get news") + } + + for _, article := range respBody.News { + rsp.Articles = append(rsp.Articles, &pb.Article{ + Title: article.Title, + Description: article.Description, + Url: article.Url, + Source: article.Source, + Date: article.Date, + }) + } + + return nil +} + func (s *Crypto) History(ctx context.Context, req *pb.HistoryRequest, rsp *pb.HistoryResponse) error { if len(req.Symbol) <= 0 { return errors.BadRequest("crypto.history", "invalid symbol") diff --git a/crypto/proto/crypto.pb.go b/crypto/proto/crypto.pb.go index 28fb38c..c8c4c6f 100644 --- a/crypto/proto/crypto.pb.go +++ b/crypto/proto/crypto.pb.go @@ -20,6 +20,196 @@ const ( _ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20) ) +type Article struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // title of the article + Title string `protobuf:"bytes,1,opt,name=title,proto3" json:"title,omitempty"` + // its description + Description string `protobuf:"bytes,2,opt,name=description,proto3" json:"description,omitempty"` + // the source url + Url string `protobuf:"bytes,3,opt,name=url,proto3" json:"url,omitempty"` + // the date published + Date string `protobuf:"bytes,4,opt,name=date,proto3" json:"date,omitempty"` + // the source + Source string `protobuf:"bytes,5,opt,name=source,proto3" json:"source,omitempty"` +} + +func (x *Article) Reset() { + *x = Article{} + if protoimpl.UnsafeEnabled { + mi := &file_proto_crypto_proto_msgTypes[0] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Article) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Article) ProtoMessage() {} + +func (x *Article) ProtoReflect() protoreflect.Message { + mi := &file_proto_crypto_proto_msgTypes[0] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Article.ProtoReflect.Descriptor instead. +func (*Article) Descriptor() ([]byte, []int) { + return file_proto_crypto_proto_rawDescGZIP(), []int{0} +} + +func (x *Article) GetTitle() string { + if x != nil { + return x.Title + } + return "" +} + +func (x *Article) GetDescription() string { + if x != nil { + return x.Description + } + return "" +} + +func (x *Article) GetUrl() string { + if x != nil { + return x.Url + } + return "" +} + +func (x *Article) GetDate() string { + if x != nil { + return x.Date + } + return "" +} + +func (x *Article) GetSource() string { + if x != nil { + return x.Source + } + return "" +} + +// Get news related to a currency +type NewsRequest struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // cryptocurrency to request news for e.g BTC + Symbol string `protobuf:"bytes,1,opt,name=symbol,proto3" json:"symbol,omitempty"` +} + +func (x *NewsRequest) Reset() { + *x = NewsRequest{} + if protoimpl.UnsafeEnabled { + mi := &file_proto_crypto_proto_msgTypes[1] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *NewsRequest) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*NewsRequest) ProtoMessage() {} + +func (x *NewsRequest) ProtoReflect() protoreflect.Message { + mi := &file_proto_crypto_proto_msgTypes[1] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use NewsRequest.ProtoReflect.Descriptor instead. +func (*NewsRequest) Descriptor() ([]byte, []int) { + return file_proto_crypto_proto_rawDescGZIP(), []int{1} +} + +func (x *NewsRequest) GetSymbol() string { + if x != nil { + return x.Symbol + } + return "" +} + +type NewsResponse struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // symbol requested for + Symbol string `protobuf:"bytes,1,opt,name=symbol,proto3" json:"symbol,omitempty"` + // list of articles + Articles []*Article `protobuf:"bytes,2,rep,name=articles,proto3" json:"articles,omitempty"` +} + +func (x *NewsResponse) Reset() { + *x = NewsResponse{} + if protoimpl.UnsafeEnabled { + mi := &file_proto_crypto_proto_msgTypes[2] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *NewsResponse) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*NewsResponse) ProtoMessage() {} + +func (x *NewsResponse) ProtoReflect() protoreflect.Message { + mi := &file_proto_crypto_proto_msgTypes[2] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use NewsResponse.ProtoReflect.Descriptor instead. +func (*NewsResponse) Descriptor() ([]byte, []int) { + return file_proto_crypto_proto_rawDescGZIP(), []int{2} +} + +func (x *NewsResponse) GetSymbol() string { + if x != nil { + return x.Symbol + } + return "" +} + +func (x *NewsResponse) GetArticles() []*Article { + if x != nil { + return x.Articles + } + return nil +} + // Get the last price for a given crypto ticker type PriceRequest struct { state protoimpl.MessageState @@ -33,7 +223,7 @@ type PriceRequest struct { func (x *PriceRequest) Reset() { *x = PriceRequest{} if protoimpl.UnsafeEnabled { - mi := &file_proto_crypto_proto_msgTypes[0] + mi := &file_proto_crypto_proto_msgTypes[3] ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) ms.StoreMessageInfo(mi) } @@ -46,7 +236,7 @@ func (x *PriceRequest) String() string { func (*PriceRequest) ProtoMessage() {} func (x *PriceRequest) ProtoReflect() protoreflect.Message { - mi := &file_proto_crypto_proto_msgTypes[0] + mi := &file_proto_crypto_proto_msgTypes[3] if protoimpl.UnsafeEnabled && x != nil { ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) if ms.LoadMessageInfo() == nil { @@ -59,7 +249,7 @@ func (x *PriceRequest) ProtoReflect() protoreflect.Message { // Deprecated: Use PriceRequest.ProtoReflect.Descriptor instead. func (*PriceRequest) Descriptor() ([]byte, []int) { - return file_proto_crypto_proto_rawDescGZIP(), []int{0} + return file_proto_crypto_proto_rawDescGZIP(), []int{3} } func (x *PriceRequest) GetSymbol() string { @@ -83,7 +273,7 @@ type PriceResponse struct { func (x *PriceResponse) Reset() { *x = PriceResponse{} if protoimpl.UnsafeEnabled { - mi := &file_proto_crypto_proto_msgTypes[1] + mi := &file_proto_crypto_proto_msgTypes[4] ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) ms.StoreMessageInfo(mi) } @@ -96,7 +286,7 @@ func (x *PriceResponse) String() string { func (*PriceResponse) ProtoMessage() {} func (x *PriceResponse) ProtoReflect() protoreflect.Message { - mi := &file_proto_crypto_proto_msgTypes[1] + mi := &file_proto_crypto_proto_msgTypes[4] if protoimpl.UnsafeEnabled && x != nil { ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) if ms.LoadMessageInfo() == nil { @@ -109,7 +299,7 @@ func (x *PriceResponse) ProtoReflect() protoreflect.Message { // Deprecated: Use PriceResponse.ProtoReflect.Descriptor instead. func (*PriceResponse) Descriptor() ([]byte, []int) { - return file_proto_crypto_proto_rawDescGZIP(), []int{1} + return file_proto_crypto_proto_rawDescGZIP(), []int{4} } func (x *PriceResponse) GetSymbol() string { @@ -139,7 +329,7 @@ type QuoteRequest struct { func (x *QuoteRequest) Reset() { *x = QuoteRequest{} if protoimpl.UnsafeEnabled { - mi := &file_proto_crypto_proto_msgTypes[2] + mi := &file_proto_crypto_proto_msgTypes[5] ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) ms.StoreMessageInfo(mi) } @@ -152,7 +342,7 @@ func (x *QuoteRequest) String() string { func (*QuoteRequest) ProtoMessage() {} func (x *QuoteRequest) ProtoReflect() protoreflect.Message { - mi := &file_proto_crypto_proto_msgTypes[2] + mi := &file_proto_crypto_proto_msgTypes[5] if protoimpl.UnsafeEnabled && x != nil { ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) if ms.LoadMessageInfo() == nil { @@ -165,7 +355,7 @@ func (x *QuoteRequest) ProtoReflect() protoreflect.Message { // Deprecated: Use QuoteRequest.ProtoReflect.Descriptor instead. func (*QuoteRequest) Descriptor() ([]byte, []int) { - return file_proto_crypto_proto_rawDescGZIP(), []int{2} + return file_proto_crypto_proto_rawDescGZIP(), []int{5} } func (x *QuoteRequest) GetSymbol() string { @@ -197,7 +387,7 @@ type QuoteResponse struct { func (x *QuoteResponse) Reset() { *x = QuoteResponse{} if protoimpl.UnsafeEnabled { - mi := &file_proto_crypto_proto_msgTypes[3] + mi := &file_proto_crypto_proto_msgTypes[6] ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) ms.StoreMessageInfo(mi) } @@ -210,7 +400,7 @@ func (x *QuoteResponse) String() string { func (*QuoteResponse) ProtoMessage() {} func (x *QuoteResponse) ProtoReflect() protoreflect.Message { - mi := &file_proto_crypto_proto_msgTypes[3] + mi := &file_proto_crypto_proto_msgTypes[6] if protoimpl.UnsafeEnabled && x != nil { ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) if ms.LoadMessageInfo() == nil { @@ -223,7 +413,7 @@ func (x *QuoteResponse) ProtoReflect() protoreflect.Message { // Deprecated: Use QuoteResponse.ProtoReflect.Descriptor instead. func (*QuoteResponse) Descriptor() ([]byte, []int) { - return file_proto_crypto_proto_rawDescGZIP(), []int{3} + return file_proto_crypto_proto_rawDescGZIP(), []int{6} } func (x *QuoteResponse) GetSymbol() string { @@ -281,7 +471,7 @@ type HistoryRequest struct { func (x *HistoryRequest) Reset() { *x = HistoryRequest{} if protoimpl.UnsafeEnabled { - mi := &file_proto_crypto_proto_msgTypes[4] + mi := &file_proto_crypto_proto_msgTypes[7] ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) ms.StoreMessageInfo(mi) } @@ -294,7 +484,7 @@ func (x *HistoryRequest) String() string { func (*HistoryRequest) ProtoMessage() {} func (x *HistoryRequest) ProtoReflect() protoreflect.Message { - mi := &file_proto_crypto_proto_msgTypes[4] + mi := &file_proto_crypto_proto_msgTypes[7] if protoimpl.UnsafeEnabled && x != nil { ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) if ms.LoadMessageInfo() == nil { @@ -307,7 +497,7 @@ func (x *HistoryRequest) ProtoReflect() protoreflect.Message { // Deprecated: Use HistoryRequest.ProtoReflect.Descriptor instead. func (*HistoryRequest) Descriptor() ([]byte, []int) { - return file_proto_crypto_proto_rawDescGZIP(), []int{4} + return file_proto_crypto_proto_rawDescGZIP(), []int{7} } func (x *HistoryRequest) GetSymbol() string { @@ -341,7 +531,7 @@ type HistoryResponse struct { func (x *HistoryResponse) Reset() { *x = HistoryResponse{} if protoimpl.UnsafeEnabled { - mi := &file_proto_crypto_proto_msgTypes[5] + mi := &file_proto_crypto_proto_msgTypes[8] ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) ms.StoreMessageInfo(mi) } @@ -354,7 +544,7 @@ func (x *HistoryResponse) String() string { func (*HistoryResponse) ProtoMessage() {} func (x *HistoryResponse) ProtoReflect() protoreflect.Message { - mi := &file_proto_crypto_proto_msgTypes[5] + mi := &file_proto_crypto_proto_msgTypes[8] if protoimpl.UnsafeEnabled && x != nil { ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) if ms.LoadMessageInfo() == nil { @@ -367,7 +557,7 @@ func (x *HistoryResponse) ProtoReflect() protoreflect.Message { // Deprecated: Use HistoryResponse.ProtoReflect.Descriptor instead. func (*HistoryResponse) Descriptor() ([]byte, []int) { - return file_proto_crypto_proto_rawDescGZIP(), []int{5} + return file_proto_crypto_proto_rawDescGZIP(), []int{8} } func (x *HistoryResponse) GetSymbol() string { @@ -423,54 +613,73 @@ var File_proto_crypto_proto protoreflect.FileDescriptor var file_proto_crypto_proto_rawDesc = []byte{ 0x0a, 0x12, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f, 0x63, 0x72, 0x79, 0x70, 0x74, 0x6f, 0x2e, 0x70, - 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x06, 0x63, 0x72, 0x79, 0x70, 0x74, 0x6f, 0x22, 0x26, 0x0a, 0x0c, - 0x50, 0x72, 0x69, 0x63, 0x65, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 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file_proto_crypto_proto_rawDescGZIP() []byte { return file_proto_crypto_proto_rawDescData } -var file_proto_crypto_proto_msgTypes = make([]protoimpl.MessageInfo, 6) +var file_proto_crypto_proto_msgTypes = make([]protoimpl.MessageInfo, 9) var file_proto_crypto_proto_goTypes = []interface{}{ - (*PriceRequest)(nil), // 0: crypto.PriceRequest - (*PriceResponse)(nil), // 1: crypto.PriceResponse - (*QuoteRequest)(nil), // 2: crypto.QuoteRequest - (*QuoteResponse)(nil), // 3: crypto.QuoteResponse - (*HistoryRequest)(nil), // 4: crypto.HistoryRequest - (*HistoryResponse)(nil), // 5: crypto.HistoryResponse + (*Article)(nil), // 0: crypto.Article + (*NewsRequest)(nil), // 1: crypto.NewsRequest + (*NewsResponse)(nil), // 2: crypto.NewsResponse + (*PriceRequest)(nil), // 3: crypto.PriceRequest + (*PriceResponse)(nil), // 4: crypto.PriceResponse + (*QuoteRequest)(nil), // 5: crypto.QuoteRequest + (*QuoteResponse)(nil), // 6: crypto.QuoteResponse + (*HistoryRequest)(nil), // 7: crypto.HistoryRequest + (*HistoryResponse)(nil), // 8: crypto.HistoryResponse } var file_proto_crypto_proto_depIdxs = []int32{ - 2, // 0: crypto.Crypto.Quote:input_type -> crypto.QuoteRequest - 0, // 1: crypto.Crypto.Price:input_type -> crypto.PriceRequest - 4, // 2: crypto.Crypto.History:input_type -> crypto.HistoryRequest - 3, // 3: crypto.Crypto.Quote:output_type -> crypto.QuoteResponse - 1, // 4: crypto.Crypto.Price:output_type -> crypto.PriceResponse - 5, // 5: crypto.Crypto.History:output_type -> crypto.HistoryResponse - 3, // [3:6] is the sub-list for method output_type - 0, // [0:3] is the sub-list for method input_type - 0, // [0:0] is the sub-list for extension type_name - 0, // [0:0] is the sub-list for extension extendee - 0, // [0:0] is the sub-list for field type_name + 0, // 0: crypto.NewsResponse.articles:type_name -> crypto.Article + 1, // 1: crypto.Crypto.News:input_type -> crypto.NewsRequest + 5, // 2: crypto.Crypto.Quote:input_type -> crypto.QuoteRequest + 3, // 3: crypto.Crypto.Price:input_type -> crypto.PriceRequest + 7, // 4: crypto.Crypto.History:input_type -> crypto.HistoryRequest + 2, // 5: crypto.Crypto.News:output_type -> crypto.NewsResponse + 6, // 6: crypto.Crypto.Quote:output_type -> crypto.QuoteResponse + 4, // 7: crypto.Crypto.Price:output_type -> crypto.PriceResponse + 8, // 8: crypto.Crypto.History:output_type -> crypto.HistoryResponse + 5, // [5:9] is the sub-list for method output_type + 1, // [1:5] is the sub-list for method input_type + 1, // [1:1] is the sub-list for extension type_name + 1, // [1:1] is the sub-list for extension extendee + 0, // [0:1] is the sub-list for field type_name } func init() { file_proto_crypto_proto_init() } @@ -515,7 +730,7 @@ func file_proto_crypto_proto_init() { } if !protoimpl.UnsafeEnabled { file_proto_crypto_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} { - switch v := v.(*PriceRequest); i { + switch v := v.(*Article); i { case 0: return &v.state case 1: @@ -527,7 +742,7 @@ func file_proto_crypto_proto_init() { } } file_proto_crypto_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} { - switch v := v.(*PriceResponse); i { + switch v := v.(*NewsRequest); i { case 0: return &v.state case 1: @@ -539,7 +754,7 @@ func file_proto_crypto_proto_init() { } } file_proto_crypto_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} { - switch v := v.(*QuoteRequest); i { + switch v := v.(*NewsResponse); i { case 0: return &v.state case 1: @@ -551,7 +766,7 @@ func file_proto_crypto_proto_init() { } } file_proto_crypto_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} { - switch v := v.(*QuoteResponse); i { + switch v := v.(*PriceRequest); i { case 0: return &v.state case 1: @@ -563,7 +778,7 @@ func file_proto_crypto_proto_init() { } } file_proto_crypto_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} { - switch v := v.(*HistoryRequest); i { + switch v := v.(*PriceResponse); i { case 0: return &v.state case 1: @@ -575,6 +790,42 @@ func file_proto_crypto_proto_init() { } } file_proto_crypto_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*QuoteRequest); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_proto_crypto_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*QuoteResponse); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_proto_crypto_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*HistoryRequest); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_proto_crypto_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} { switch v := v.(*HistoryResponse); i { case 0: return &v.state @@ -593,7 +844,7 @@ func file_proto_crypto_proto_init() { GoPackagePath: reflect.TypeOf(x{}).PkgPath(), RawDescriptor: file_proto_crypto_proto_rawDesc, NumEnums: 0, - NumMessages: 6, + NumMessages: 9, NumExtensions: 0, NumServices: 1, }, diff --git a/crypto/proto/crypto.pb.micro.go b/crypto/proto/crypto.pb.micro.go index b5a70e1..ebd677f 100644 --- a/crypto/proto/crypto.pb.micro.go +++ b/crypto/proto/crypto.pb.micro.go @@ -42,6 +42,7 @@ func NewCryptoEndpoints() []*api.Endpoint { // Client API for Crypto service type CryptoService interface { + News(ctx context.Context, in *NewsRequest, opts ...client.CallOption) (*NewsResponse, error) Quote(ctx context.Context, in *QuoteRequest, opts ...client.CallOption) (*QuoteResponse, error) Price(ctx context.Context, in *PriceRequest, opts ...client.CallOption) (*PriceResponse, error) History(ctx context.Context, in *HistoryRequest, opts ...client.CallOption) (*HistoryResponse, error) @@ -59,6 +60,16 @@ func NewCryptoService(name string, c client.Client) CryptoService { } } +func (c *cryptoService) News(ctx context.Context, in *NewsRequest, opts ...client.CallOption) (*NewsResponse, error) { + req := c.c.NewRequest(c.name, "Crypto.News", in) + out := new(NewsResponse) + err := c.c.Call(ctx, req, out, opts...) + if err != nil { + return nil, err + } + return out, nil +} + func (c *cryptoService) Quote(ctx context.Context, in *QuoteRequest, opts ...client.CallOption) (*QuoteResponse, error) { req := c.c.NewRequest(c.name, "Crypto.Quote", in) out := new(QuoteResponse) @@ -92,6 +103,7 @@ func (c *cryptoService) History(ctx context.Context, in *HistoryRequest, opts .. // Server API for Crypto service type CryptoHandler interface { + News(context.Context, *NewsRequest, *NewsResponse) error Quote(context.Context, *QuoteRequest, *QuoteResponse) error Price(context.Context, *PriceRequest, *PriceResponse) error History(context.Context, *HistoryRequest, *HistoryResponse) error @@ -99,6 +111,7 @@ type CryptoHandler interface { func RegisterCryptoHandler(s server.Server, hdlr CryptoHandler, opts ...server.HandlerOption) error { type crypto interface { + News(ctx context.Context, in *NewsRequest, out *NewsResponse) error Quote(ctx context.Context, in *QuoteRequest, out *QuoteResponse) error Price(ctx context.Context, in *PriceRequest, out *PriceResponse) error History(ctx context.Context, in *HistoryRequest, out *HistoryResponse) error @@ -114,6 +127,10 @@ type cryptoHandler struct { CryptoHandler } +func (h *cryptoHandler) News(ctx context.Context, in *NewsRequest, out *NewsResponse) error { + return h.CryptoHandler.News(ctx, in, out) +} + func (h *cryptoHandler) Quote(ctx context.Context, in *QuoteRequest, out *QuoteResponse) error { return h.CryptoHandler.Quote(ctx, in, out) } diff --git a/crypto/proto/crypto.proto b/crypto/proto/crypto.proto index b948051..05cfdca 100644 --- a/crypto/proto/crypto.proto +++ b/crypto/proto/crypto.proto @@ -5,11 +5,38 @@ package crypto; option go_package = "./proto;crypto"; service Crypto { + rpc News(NewsRequest) returns (NewsResponse) {} rpc Quote(QuoteRequest) returns (QuoteResponse) {} rpc Price(PriceRequest) returns (PriceResponse) {} rpc History(HistoryRequest) returns (HistoryResponse) {} } +message Article { + // title of the article + string title = 1; + // its description + string description = 2; + // the source url + string url = 3; + // the date published + string date = 4; + // the source + string source = 5; +} + +// Get news related to a currency +message NewsRequest { + // cryptocurrency ticker to request news for e.g BTC + string symbol = 1; +} + +message NewsResponse { + // symbol requested for + string symbol = 1; + // list of articles + repeated Article articles = 2; +} + // Get the last price for a given crypto ticker message PriceRequest { // crypto symbol e.g BTCUSD