add google search (#242)

* add google search

* fix git ignore

* Charge 1c for search queries

google/.gitignore

@@ -0,0 +1,2 @@
+
+google

google/Dockerfile

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

google/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/google.proto
+
+.PHONY: proto
+proto:
+	protoc --proto_path=. --micro_out=. --go_out=:. proto/google.proto
+	
+.PHONY: build
+build:
+	go build -o google *.go
+
+.PHONY: test
+test:
+	go test -v ./... -cover
+
+.PHONY: docker
+docker:
+	docker build . -t google:latest

google/README.md

@@ -0,0 +1,6 @@
+Google search service
+
+# Google Service
+
+Search for anything via Google. That's it.
+

google/examples.json

@@ -0,0 +1,47 @@
+
+{
+    "search": [{
+        "title": "Search for videos",
+        "run_check": false,
+        "description": "Search for videos on google",
+        "request": {
+           "query": "how to make donuts"
+        },
+        "response": {
+            "results": [
+                {
+                        "id": "g0h-szLkVy8J",
+                        "kind": "result",
+                        "title": "How to Make Homemade Glazed Doughnuts - Sally's Baking Addiction",
+                        "snippet": "May 2, 2016 ... Ingredients · 1 cup (240ml) whole milk, warmed to about 110°F (43°C)* · 1 Tablespoon active dry yeast* · 1/3 cup (65g) granulated sugar · 2 large ...",
+                        "url": "https://sallysbakingaddiction.com/how-to-make-homemade-glazed-doughnuts/",
+                        "display_url": "sallysbakingaddiction.com"
+                },
+                {
+                        "id": "7Rg9Zme3k3EJ",
+                        "kind": "result",
+                        "title": "How to Make Donuts at Home - Homemade Doughnuts Recipe",
+                        "snippet": "Apr 12, 2021 ... In a medium bowl, whisk together flour and salt. In a large bowl, whisk together remaining sugar, butter, eggs, and vanilla with a wooden spoon.",
+                        "url": "https://www.delish.com/cooking/recipe-ideas/a24788319/how-to-make-donuts-at-home/",
+                        "display_url": "www.delish.com"
+                },
+                {
+                        "id": "y9u1t370RBoJ",
+                        "kind": "result",
+                        "title": "How to Make Homemade Donuts in 15 Minutes - Cooking Classy",
+                        "snippet": "May 3, 2020 ... Ingredients · 1 1/4 cups (176g) all-purpose flour (scoop and level to measure) · 2 tsp baking powder · 1/4 tsp salt · 1/2 cup (120 ml) buttermilk* ...",
+                        "url": "https://www.cookingclassy.com/15-minute-donuts-from-scratch/",
+                        "display_url": "www.cookingclassy.com"
+                },
+                {
+                        "id": "u30VwVPlat8J",
+                        "kind": "result",
+                        "title": "How to Make Homemade Donuts | The Recipe Critic",
+                        "snippet": "Oct 24, 2020 ... How to Make Homemade Donuts · Heat up the cream, milk and sugar and allow it to cool down a bit before adding the yeast to activate it. · Once the ...",
+                        "url": "https://therecipecritic.com/homemade-donuts/",
+                        "display_url": "therecipecritic.com"
+                }
+            ]
+        }
+    }]
+}

google/generate.go

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

google/handler/google.go

@@ -0,0 +1,53 @@
+package handler
+
+import (
+	"context"
+	"strings"
+
+	"github.com/micro/micro/v3/service/errors"
+	"github.com/micro/micro/v3/service/logger"
+	pb "github.com/micro/services/google/proto"
+	"google.golang.org/api/customsearch/v1"
+	"google.golang.org/api/option"
+)
+
+type Google struct {
+	Client *customsearch.Service
+	CxId string
+}
+
+func New(apiKey, cxId string) *Google {
+	ctx := context.TODO()
+	cs, _ := customsearch.NewService(ctx, option.WithAPIKey(apiKey))
+
+	return &Google{
+		Client: cs,
+		CxId: cxId,
+	}
+}
+
+func (g *Google) Search(ctx context.Context, req *pb.SearchRequest, rsp *pb.SearchResponse) error {
+	if len(req.Query) == 0 {
+		return errors.BadRequest("google.search", "missing query")
+	}
+
+	resp, err := g.Client.Cse.List().Cx(g.CxId).Q(req.Query).Num(10).Do()
+	if err != nil {
+		logger.Errorf("failed to search google for %v: %v", req.Query, err)
+		return errors.InternalServerError("google.search", "Failed to search for "+req.Query)
+	}
+
+	for _, item := range resp.Items {
+		kind := strings.Split(item.Kind, "#")[1]
+		rsp.Results = append(rsp.Results, &pb.SearchResult{
+			Id:         item.CacheId,
+			Kind:       kind,
+			Title:      item.Title,
+			Url:        item.Link,
+			DisplayUrl: item.DisplayLink,
+			Snippet:    item.Snippet,
+		})
+	}
+
+	return nil
+}

google/main.go

@@ -0,0 +1,44 @@
+package main
+
+import (
+	"github.com/micro/micro/v3/service"
+	"github.com/micro/micro/v3/service/config"
+	"github.com/micro/micro/v3/service/logger"
+	"github.com/micro/services/google/handler"
+	pb "github.com/micro/services/google/proto"
+)
+
+func main() {
+	// Create service
+	srv := service.New(
+		service.Name("google"),
+		service.Version("latest"),
+	)
+
+	// Setup google maps
+	c, err := config.Get("google.apikey")
+	if err != nil {
+		logger.Fatalf("Error loading config: %v", err)
+	}
+	apiKey := c.String("")
+	if len(apiKey) == 0 {
+		logger.Fatalf("Missing required config: google.apikey")
+	}
+	// Setup google maps
+	c, err = config.Get("google.cx_id")
+	if err != nil {
+		logger.Fatalf("Error loading config: %v", err)
+	}
+	cxId := c.String("")
+	if len(cxId) == 0 {
+		logger.Fatalf("Missing required config: google.cxId")
+	}
+
+	// Register handler
+	pb.RegisterGoogleHandler(srv.Server(), handler.New(apiKey, cxId))
+
+	// Run service
+	if err := srv.Run(); err != nil {
+		logger.Fatal(err)
+	}
+}

google/micro.mu

@@ -0,0 +1 @@
+service google

google/proto/google.pb.go

@@ -0,0 +1,332 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.27.1
+// 	protoc        v3.15.6
+// source: proto/google.proto
+
+package google
+
+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)
+)
+
+type SearchResult struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// id of the result
+	Id string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	// kind of result; "search"
+	Kind string `protobuf:"bytes,2,opt,name=kind,proto3" json:"kind,omitempty"`
+	// title of the result
+	Title string `protobuf:"bytes,3,opt,name=title,proto3" json:"title,omitempty"`
+	// the result snippet
+	Snippet string `protobuf:"bytes,4,opt,name=snippet,proto3" json:"snippet,omitempty"`
+	// the full url for the result
+	Url string `protobuf:"bytes,5,opt,name=url,proto3" json:"url,omitempty"`
+	// abridged version of this search result’s URL, e.g. www.exampe.com
+	DisplayUrl string `protobuf:"bytes,6,opt,name=display_url,json=displayUrl,proto3" json:"display_url,omitempty"`
+}
+
+func (x *SearchResult) Reset() {
+	*x = SearchResult{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_google_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SearchResult) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SearchResult) ProtoMessage() {}
+
+func (x *SearchResult) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_google_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 SearchResult.ProtoReflect.Descriptor instead.
+func (*SearchResult) Descriptor() ([]byte, []int) {
+	return file_proto_google_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *SearchResult) GetId() string {
+	if x != nil {
+		return x.Id
+	}
+	return ""
+}
+
+func (x *SearchResult) GetKind() string {
+	if x != nil {
+		return x.Kind
+	}
+	return ""
+}
+
+func (x *SearchResult) GetTitle() string {
+	if x != nil {
+		return x.Title
+	}
+	return ""
+}
+
+func (x *SearchResult) GetSnippet() string {
+	if x != nil {
+		return x.Snippet
+	}
+	return ""
+}
+
+func (x *SearchResult) GetUrl() string {
+	if x != nil {
+		return x.Url
+	}
+	return ""
+}
+
+func (x *SearchResult) GetDisplayUrl() string {
+	if x != nil {
+		return x.DisplayUrl
+	}
+	return ""
+}
+
+// Search for videos on Google
+type SearchRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Query to search for
+	Query string `protobuf:"bytes,1,opt,name=query,proto3" json:"query,omitempty"`
+}
+
+func (x *SearchRequest) Reset() {
+	*x = SearchRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_google_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SearchRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SearchRequest) ProtoMessage() {}
+
+func (x *SearchRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_google_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 SearchRequest.ProtoReflect.Descriptor instead.
+func (*SearchRequest) Descriptor() ([]byte, []int) {
+	return file_proto_google_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *SearchRequest) GetQuery() string {
+	if x != nil {
+		return x.Query
+	}
+	return ""
+}
+
+type SearchResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// List of results for the query
+	Results []*SearchResult `protobuf:"bytes,1,rep,name=results,proto3" json:"results,omitempty"`
+}
+
+func (x *SearchResponse) Reset() {
+	*x = SearchResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_google_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SearchResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SearchResponse) ProtoMessage() {}
+
+func (x *SearchResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_google_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 SearchResponse.ProtoReflect.Descriptor instead.
+func (*SearchResponse) Descriptor() ([]byte, []int) {
+	return file_proto_google_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *SearchResponse) GetResults() []*SearchResult {
+	if x != nil {
+		return x.Results
+	}
+	return nil
+}
+
+var File_proto_google_proto protoreflect.FileDescriptor
+
+var file_proto_google_proto_rawDesc = []byte{
+	0x0a, 0x12, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x70,
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+	0x6f, 0x67, 0x6c, 0x65, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_proto_google_proto_rawDescOnce sync.Once
+	file_proto_google_proto_rawDescData = file_proto_google_proto_rawDesc
+)
+
+func file_proto_google_proto_rawDescGZIP() []byte {
+	file_proto_google_proto_rawDescOnce.Do(func() {
+		file_proto_google_proto_rawDescData = protoimpl.X.CompressGZIP(file_proto_google_proto_rawDescData)
+	})
+	return file_proto_google_proto_rawDescData
+}
+
+var file_proto_google_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
+var file_proto_google_proto_goTypes = []interface{}{
+	(*SearchResult)(nil),   // 0: google.SearchResult
+	(*SearchRequest)(nil),  // 1: google.SearchRequest
+	(*SearchResponse)(nil), // 2: google.SearchResponse
+}
+var file_proto_google_proto_depIdxs = []int32{
+	0, // 0: google.SearchResponse.results:type_name -> google.SearchResult
+	1, // 1: google.Google.Search:input_type -> google.SearchRequest
+	2, // 2: google.Google.Search:output_type -> google.SearchResponse
+	2, // [2:3] is the sub-list for method output_type
+	1, // [1:2] 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_google_proto_init() }
+func file_proto_google_proto_init() {
+	if File_proto_google_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_proto_google_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SearchResult); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_proto_google_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SearchRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_proto_google_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SearchResponse); 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_google_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   3,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_proto_google_proto_goTypes,
+		DependencyIndexes: file_proto_google_proto_depIdxs,
+		MessageInfos:      file_proto_google_proto_msgTypes,
+	}.Build()
+	File_proto_google_proto = out.File
+	file_proto_google_proto_rawDesc = nil
+	file_proto_google_proto_goTypes = nil
+	file_proto_google_proto_depIdxs = nil
+}

google/proto/google.pb.micro.go

@@ -0,0 +1,93 @@
+// Code generated by protoc-gen-micro. DO NOT EDIT.
+// source: proto/google.proto
+
+package google
+
+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 Google service
+
+func NewGoogleEndpoints() []*api.Endpoint {
+	return []*api.Endpoint{}
+}
+
+// Client API for Google service
+
+type GoogleService interface {
+	Search(ctx context.Context, in *SearchRequest, opts ...client.CallOption) (*SearchResponse, error)
+}
+
+type googleService struct {
+	c    client.Client
+	name string
+}
+
+func NewGoogleService(name string, c client.Client) GoogleService {
+	return &googleService{
+		c:    c,
+		name: name,
+	}
+}
+
+func (c *googleService) Search(ctx context.Context, in *SearchRequest, opts ...client.CallOption) (*SearchResponse, error) {
+	req := c.c.NewRequest(c.name, "Google.Search", in)
+	out := new(SearchResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// Server API for Google service
+
+type GoogleHandler interface {
+	Search(context.Context, *SearchRequest, *SearchResponse) error
+}
+
+func RegisterGoogleHandler(s server.Server, hdlr GoogleHandler, opts ...server.HandlerOption) error {
+	type google interface {
+		Search(ctx context.Context, in *SearchRequest, out *SearchResponse) error
+	}
+	type Google struct {
+		google
+	}
+	h := &googleHandler{hdlr}
+	return s.Handle(s.NewHandler(&Google{h}, opts...))
+}
+
+type googleHandler struct {
+	GoogleHandler
+}
+
+func (h *googleHandler) Search(ctx context.Context, in *SearchRequest, out *SearchResponse) error {
+	return h.GoogleHandler.Search(ctx, in, out)
+}

google/proto/google.proto

@@ -0,0 +1,35 @@
+syntax = "proto3";
+
+package google;
+
+option go_package = "./proto;google";
+
+service Google {
+	rpc Search(SearchRequest) returns (SearchResponse) {}
+}
+
+message SearchResult {
+	// id of the result
+	string id = 1;
+	// kind of result; "search"
+	string kind = 2;
+	// title of the result
+	string title = 3;
+	// the result snippet
+	string snippet = 4;
+	// the full url for the result
+	string url = 5;
+	// abridged version of this search result’s URL, e.g. www.exampe.com
+	string display_url = 6;
+}
+
+// Search for videos on Google
+message SearchRequest {
+	// Query to search for
+	string query = 1;
+}
+
+message SearchResponse {
+	// List of results for the query
+	repeated SearchResult results = 1;
+}

google/publicapi.json

@@ -0,0 +1,9 @@
+{
+  "name": "google",
+  "icon": "🔍",
+  "category": "search",
+  "display_name": "Google",
+  "pricing": {
+    "Google.Search": 10000
+  }
+}