add ask question service

ask/.gitignore

@@ -0,0 +1,2 @@
+
+ask

ask/Dockerfile

@@ -0,0 +1,3 @@
+FROM alpine
+ADD ask /ask
+ENTRYPOINT [ "/ask" ]

ask/Makefile

@@ -0,0 +1,28 @@
+
+GOPATH:=$(shell go env GOPATH)
+.PHONY: init
+init:
+	go get -u github.com/golang/protobuf/proto
+	go get -u github.com/golang/protobuf/protoc-gen-go
+	go get github.com/micro/micro/v3/cmd/protoc-gen-micro
+	go get github.com/micro/micro/v3/cmd/protoc-gen-openapi
+
+.PHONY: api
+api:
+	protoc --openapi_out=. --proto_path=. proto/ask.proto
+
+.PHONY: proto
+proto:
+	protoc --proto_path=. --micro_out=. --go_out=:. proto/ask.proto
+	
+.PHONY: build
+build:
+	go build -o ask *.go
+
+.PHONY: test
+test:
+	go test -v ./... -cover
+
+.PHONY: docker
+docker:
+	docker build . -t ask:latest

ask/README.md

@@ -0,0 +1,7 @@
+Instant answers to any question
+
+# Ask Service
+
+Ask a question and get an instant answer.
+
+Powered by [DuckDuckGo](https://duckduckgo.com)

ask/generate.go

@@ -0,0 +1,3 @@
+package main
+
+//go:generate make proto

ask/handler/ask.go

@@ -0,0 +1,47 @@
+package handler
+
+import (
+	"context"
+
+	"github.com/ajanicij/goduckgo/goduckgo"
+	"github.com/micro/micro/v3/service/errors"
+	pb "github.com/micro/services/ask/proto"
+)
+
+type Ask struct{}
+
+func (a *Ask) Question(ctx context.Context, req *pb.QuestionRequest, rsp *pb.QuestionResponse) error {
+	if len(req.Query) == 0 {
+		return errors.BadRequest("ask.question", "need a question")
+	}
+
+	msg, err := goduckgo.Query(req.Query)
+	if err != nil {
+		return errors.InternalServerError("ask.question", err.Error())
+	}
+
+	if len(msg.Abstract) > 0 {
+		rsp.Answer = msg.Abstract
+	} else if len(msg.AbstractText) > 0 {
+		rsp.Answer = msg.AbstractText
+	} else if len(msg.RelatedTopics) > 0 {
+		rsp.Answer = msg.RelatedTopics[0].Text
+	} else {
+		rsp.Answer = "Sorry I don't know 😞"
+		return nil
+	}
+
+	if len(msg.AbstractURL) > 0 {
+		rsp.Url = msg.AbstractURL
+	} else if len(msg.RelatedTopics) > 0 {
+		rsp.Url = msg.RelatedTopics[0].FirstURL
+	}
+
+	if len(msg.Image) > 0 {
+		rsp.Image = "https://duckduckgo.com" + msg.Image
+	} else if len(msg.RelatedTopics) > 0 {
+		rsp.Image = "https://duckduckgo.com" + msg.RelatedTopics[0].Icon.URL
+	}
+
+	return nil
+}

ask/main.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"github.com/micro/micro/v3/service"
+	"github.com/micro/micro/v3/service/logger"
+	"github.com/micro/services/ask/handler"
+	pb "github.com/micro/services/ask/proto"
+)
+
+func main() {
+	// Create service
+	srv := service.New(
+		service.Name("ask"),
+		service.Version("latest"),
+	)
+
+	// Register handler
+	pb.RegisterAskHandler(srv.Server(), new(handler.Ask))
+
+	// Run service
+	if err := srv.Run(); err != nil {
+		logger.Fatal(err)
+	}
+}

ask/micro.mu

@@ -0,0 +1 @@
+service ask

ask/proto/ask.pb.go

@@ -0,0 +1,234 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.26.0
+// 	protoc        v3.15.6
+// source: proto/ask.proto
+
+package ask
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+// Ask a question and receive an instant answer
+type QuestionRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// the question to ask
+	Query string `protobuf:"bytes,1,opt,name=query,proto3" json:"query,omitempty"`
+}
+
+func (x *QuestionRequest) Reset() {
+	*x = QuestionRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_ask_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *QuestionRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*QuestionRequest) ProtoMessage() {}
+
+func (x *QuestionRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_ask_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 QuestionRequest.ProtoReflect.Descriptor instead.
+func (*QuestionRequest) Descriptor() ([]byte, []int) {
+	return file_proto_ask_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *QuestionRequest) GetQuery() string {
+	if x != nil {
+		return x.Query
+	}
+	return ""
+}
+
+type QuestionResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// the answer to your question
+	Answer string `protobuf:"bytes,1,opt,name=answer,proto3" json:"answer,omitempty"`
+	// a related url
+	Url string `protobuf:"bytes,2,opt,name=url,proto3" json:"url,omitempty"`
+	// any related image
+	Image string `protobuf:"bytes,3,opt,name=image,proto3" json:"image,omitempty"`
+}
+
+func (x *QuestionResponse) Reset() {
+	*x = QuestionResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_ask_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *QuestionResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*QuestionResponse) ProtoMessage() {}
+
+func (x *QuestionResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_ask_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 QuestionResponse.ProtoReflect.Descriptor instead.
+func (*QuestionResponse) Descriptor() ([]byte, []int) {
+	return file_proto_ask_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *QuestionResponse) GetAnswer() string {
+	if x != nil {
+		return x.Answer
+	}
+	return ""
+}
+
+func (x *QuestionResponse) GetUrl() string {
+	if x != nil {
+		return x.Url
+	}
+	return ""
+}
+
+func (x *QuestionResponse) GetImage() string {
+	if x != nil {
+		return x.Image
+	}
+	return ""
+}
+
+var File_proto_ask_proto protoreflect.FileDescriptor
+
+var file_proto_ask_proto_rawDesc = []byte{
+	0x0a, 0x0f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f, 0x61, 0x73, 0x6b, 0x2e, 0x70, 0x72, 0x6f, 0x74,
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+	0x72, 0x79, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x05, 0x71, 0x75, 0x65, 0x72, 0x79, 0x22,
+	0x52, 0x0a, 0x10, 0x51, 0x75, 0x65, 0x73, 0x74, 0x69, 0x6f, 0x6e, 0x52, 0x65, 0x73, 0x70, 0x6f,
+	0x6e, 0x73, 0x65, 0x12, 0x16, 0x0a, 0x06, 0x61, 0x6e, 0x73, 0x77, 0x65, 0x72, 0x18, 0x01, 0x20,
+	0x01, 0x28, 0x09, 0x52, 0x06, 0x61, 0x6e, 0x73, 0x77, 0x65, 0x72, 0x12, 0x10, 0x0a, 0x03, 0x75,
+	0x72, 0x6c, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x03, 0x75, 0x72, 0x6c, 0x12, 0x14, 0x0a,
+	0x05, 0x69, 0x6d, 0x61, 0x67, 0x65, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52, 0x05, 0x69, 0x6d,
+	0x61, 0x67, 0x65, 0x32, 0x40, 0x0a, 0x03, 0x41, 0x73, 0x6b, 0x12, 0x39, 0x0a, 0x08, 0x51, 0x75,
+	0x65, 0x73, 0x74, 0x69, 0x6f, 0x6e, 0x12, 0x14, 0x2e, 0x61, 0x73, 0x6b, 0x2e, 0x51, 0x75, 0x65,
+	0x73, 0x74, 0x69, 0x6f, 0x6e, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x15, 0x2e, 0x61,
+	0x73, 0x6b, 0x2e, 0x51, 0x75, 0x65, 0x73, 0x74, 0x69, 0x6f, 0x6e, 0x52, 0x65, 0x73, 0x70, 0x6f,
+	0x6e, 0x73, 0x65, 0x22, 0x00, 0x42, 0x0d, 0x5a, 0x0b, 0x2e, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f,
+	0x3b, 0x61, 0x73, 0x6b, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_proto_ask_proto_rawDescOnce sync.Once
+	file_proto_ask_proto_rawDescData = file_proto_ask_proto_rawDesc
+)
+
+func file_proto_ask_proto_rawDescGZIP() []byte {
+	file_proto_ask_proto_rawDescOnce.Do(func() {
+		file_proto_ask_proto_rawDescData = protoimpl.X.CompressGZIP(file_proto_ask_proto_rawDescData)
+	})
+	return file_proto_ask_proto_rawDescData
+}
+
+var file_proto_ask_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
+var file_proto_ask_proto_goTypes = []interface{}{
+	(*QuestionRequest)(nil),  // 0: ask.QuestionRequest
+	(*QuestionResponse)(nil), // 1: ask.QuestionResponse
+}
+var file_proto_ask_proto_depIdxs = []int32{
+	0, // 0: ask.Ask.Question:input_type -> ask.QuestionRequest
+	1, // 1: ask.Ask.Question:output_type -> ask.QuestionResponse
+	1, // [1:2] is the sub-list for method output_type
+	0, // [0:1] 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
+}
+
+func init() { file_proto_ask_proto_init() }
+func file_proto_ask_proto_init() {
+	if File_proto_ask_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_proto_ask_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*QuestionRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_proto_ask_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*QuestionResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_proto_ask_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   2,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_proto_ask_proto_goTypes,
+		DependencyIndexes: file_proto_ask_proto_depIdxs,
+		MessageInfos:      file_proto_ask_proto_msgTypes,
+	}.Build()
+	File_proto_ask_proto = out.File
+	file_proto_ask_proto_rawDesc = nil
+	file_proto_ask_proto_goTypes = nil
+	file_proto_ask_proto_depIdxs = nil
+}

ask/proto/ask.pb.micro.go

@@ -0,0 +1,93 @@
+// Code generated by protoc-gen-micro. DO NOT EDIT.
+// source: proto/ask.proto
+
+package ask
+
+import (
+	fmt "fmt"
+	proto "github.com/golang/protobuf/proto"
+	math "math"
+)
+
+import (
+	context "context"
+	api "github.com/micro/micro/v3/service/api"
+	client "github.com/micro/micro/v3/service/client"
+	server "github.com/micro/micro/v3/service/server"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ api.Endpoint
+var _ context.Context
+var _ client.Option
+var _ server.Option
+
+// Api Endpoints for Ask service
+
+func NewAskEndpoints() []*api.Endpoint {
+	return []*api.Endpoint{}
+}
+
+// Client API for Ask service
+
+type AskService interface {
+	Question(ctx context.Context, in *QuestionRequest, opts ...client.CallOption) (*QuestionResponse, error)
+}
+
+type askService struct {
+	c    client.Client
+	name string
+}
+
+func NewAskService(name string, c client.Client) AskService {
+	return &askService{
+		c:    c,
+		name: name,
+	}
+}
+
+func (c *askService) Question(ctx context.Context, in *QuestionRequest, opts ...client.CallOption) (*QuestionResponse, error) {
+	req := c.c.NewRequest(c.name, "Ask.Question", in)
+	out := new(QuestionResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// Server API for Ask service
+
+type AskHandler interface {
+	Question(context.Context, *QuestionRequest, *QuestionResponse) error
+}
+
+func RegisterAskHandler(s server.Server, hdlr AskHandler, opts ...server.HandlerOption) error {
+	type ask interface {
+		Question(ctx context.Context, in *QuestionRequest, out *QuestionResponse) error
+	}
+	type Ask struct {
+		ask
+	}
+	h := &askHandler{hdlr}
+	return s.Handle(s.NewHandler(&Ask{h}, opts...))
+}
+
+type askHandler struct {
+	AskHandler
+}
+
+func (h *askHandler) Question(ctx context.Context, in *QuestionRequest, out *QuestionResponse) error {
+	return h.AskHandler.Question(ctx, in, out)
+}

ask/proto/ask.proto

@@ -0,0 +1,24 @@
+syntax = "proto3";
+
+package ask;
+
+option go_package = "./proto;ask";
+
+service Ask {
+	rpc Question(QuestionRequest) returns (QuestionResponse) {}
+}
+
+// Ask a question and receive an instant answer
+message QuestionRequest {
+	// the question to ask
+	string query = 1;
+}
+
+message QuestionResponse {
+	// the answer to your question
+	string answer = 1;
+	// a related url
+	string url = 2;
+	// any related image
+	string image = 3;
+}

ask/publicapi.json

@@ -0,0 +1,5 @@
+{
+  "name": "ask",
+  "icon": "❓",
+  "category": "search"
+}

go.mod

@@ -7,6 +7,7 @@ require (
 	github.com/Masterminds/semver/v3 v3.1.1
 	github.com/PuerkitoBio/goquery v1.6.1
 	github.com/SlyMarbo/rss v1.0.1
+	github.com/ajanicij/goduckgo v0.0.0-20150205231829-61f9a275272f
 	github.com/cdipaolo/goml v0.0.0-20190412180403-e1f51f713598 // indirect
 	github.com/cdipaolo/sentiment v0.0.0-20200617002423-c697f64e7f10
 	github.com/cpuguy83/go-md2man/v2 v2.0.0 // indirect

go.sum

@@ -37,6 +37,8 @@ github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWX
 github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
 github.com/SlyMarbo/rss v1.0.1 h1:fiaIU5UhcXauVOniHOIocWG7uj8Ej6pHNarMGPJilzA=
 github.com/SlyMarbo/rss v1.0.1/go.mod h1:JNF+T33oj4m5WLCQXpBTCgO+SxRbYVgdiiimHNgzcbA=
+github.com/ajanicij/goduckgo v0.0.0-20150205231829-61f9a275272f h1:FkZIeRvGe4AcF/K4UKsuvyTvRYhMCGwjpoIByl6t61I=
+github.com/ajanicij/goduckgo v0.0.0-20150205231829-61f9a275272f/go.mod h1:KeRS5OFtXgX0i1YVwrl00Rm70FdNSJlzpvj3p+1qjx8=
 github.com/ajstarks/svgo v0.0.0-20180226025133-644b8db467af/go.mod h1:K08gAheRH3/J6wwsYMMT4xOr94bZjxIelGM0+d/wbFw=
 github.com/akamai/AkamaiOPEN-edgegrid-golang v0.9.0/go.mod h1:zpDJeKyp9ScW4NNrbdr+Eyxvry3ilGPewKoXw3XGN1k=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=