add app reservation (#284)

app/.gitignore

@@ -0,0 +1,2 @@
+
+app

app/Dockerfile

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

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

app/README.md

@@ -0,0 +1,6 @@
+Global app deployment (Coming soon)
+
+# App Service
+
+Deploy apps and services quickly and easily from a source url or container image. 
+Get a globally unique URL ([name].m3o.app) and share with others. Reserve your app name now.

app/generate.go

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

app/handler/app.go

@@ -0,0 +1,119 @@
+package handler
+
+import (
+	"context"
+	"crypto/sha1"
+	"fmt"
+	"io"
+	"regexp"
+	"sync"
+	"time"
+
+	"github.com/micro/micro/v3/service/errors"
+	"github.com/micro/micro/v3/service/store"
+	pb "github.com/micro/services/app/proto"
+	"github.com/micro/services/pkg/tenant"
+)
+
+type App struct{}
+
+var (
+	mtx sync.Mutex
+
+	ReservationKey = "reservedApp/"
+	NameFormat     = regexp.MustCompilePOSIX("[a-z0-9]+")
+)
+
+type Reservation struct {
+	// The app name
+	Name string `json:"name"`
+	// The owner e.g tenant id
+	Owner string `json:"owner"`
+	// Uniq associated token
+	Token string `json:"token"`
+	// Time of creation
+	Created time.Time `json:"created"`
+	// The expiry time
+	Expires time.Time `json:"expires"`
+}
+
+func genToken(name, owner string) string {
+	h := sha1.New()
+	io.WriteString(h, name+owner)
+	return fmt.Sprintf("%x", h.Sum(nil))
+}
+
+// Call is a single request handler called via client.Call or the generated client code
+func (a *App) Reserve(ctx context.Context, req *pb.ReserveRequest, rsp *pb.ReserveResponse) error {
+	id, ok := tenant.FromContext(ctx)
+	if !ok {
+		id = "micro"
+	}
+
+	if len(req.Name) == 0 {
+		return errors.BadRequest("app.reserve", "missing app name")
+	}
+
+	if len(req.Name) < 3 || len(req.Name) > 256 {
+		return errors.BadRequest("app.reserve", "name must be longer than 3-256 chars in length")
+	}
+
+	if !NameFormat.MatchString(req.Name) {
+		return errors.BadRequest("app.reserve", "invalidate name format")
+	}
+
+	// to prevent race conditions in reservation lets global lock
+	mtx.Lock()
+	defer mtx.Unlock()
+
+	// check the store for reservation
+	recs, err := store.Read(ReservationKey + req.Name)
+	if err != nil && err != store.ErrNotFound {
+		return errors.InternalServerError("app.reserve", "failed to reserve name")
+	}
+
+	var rsrv *Reservation
+
+	// check if the record exists
+	if len(recs) > 0 {
+		// existing reservation exists
+		rec := recs[0]
+
+		if err := rec.Decode(&rsrv); err != nil {
+			return errors.BadRequest("app.reserve", "name already reserved")
+		}
+
+		// check the owner matches
+		if rsrv.Owner != id {
+			return errors.BadRequest("app.reserve", "name already reserved")
+		}
+
+		// update the reservation
+		rsrv.Expires = time.Now().AddDate(1, 0, 0)
+	} else {
+		// not reserved
+		rsrv = &Reservation{
+			Name:    req.Name,
+			Owner:   id,
+			Created: time.Now(),
+			Expires: time.Now().AddDate(1, 0, 0),
+			Token:   genToken(req.Name, id),
+		}
+	}
+
+	rec := store.NewRecord(ReservationKey+req.Name, rsrv)
+
+	if err := store.Write(rec); err != nil {
+		return errors.InternalServerError("app.reserve", "error while reserving name")
+	}
+
+	rsp.Reservation = &pb.Reservation{
+		Name:    rsrv.Name,
+		Owner:   rsrv.Owner,
+		Created: rsrv.Created.Format(time.RFC3339Nano),
+		Expires: rsrv.Expires.Format(time.RFC3339Nano),
+		Token:   rsrv.Token,
+	}
+
+	return nil
+}

app/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/app/handler"
+	pb "github.com/micro/services/app/proto"
+)
+
+func main() {
+	// Create service
+	srv := service.New(
+		service.Name("app"),
+		service.Version("latest"),
+	)
+
+	// Register handler
+	pb.RegisterAppHandler(srv.Server(), new(handler.App))
+
+	// Run service
+	if err := srv.Run(); err != nil {
+		logger.Fatal(err)
+	}
+}

app/micro.mu

@@ -0,0 +1 @@
+service app

app/proto/app.pb.go

@@ -0,0 +1,320 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.27.1
+// 	protoc        v3.15.6
+// source: proto/app.proto
+
+package app
+
+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 Reservation struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// name of the app
+	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	// owner id
+	Owner string `protobuf:"bytes,2,opt,name=owner,proto3" json:"owner,omitempty"`
+	// associated token
+	Token string `protobuf:"bytes,3,opt,name=token,proto3" json:"token,omitempty"`
+	// time of reservation
+	Created string `protobuf:"bytes,4,opt,name=created,proto3" json:"created,omitempty"`
+	// time reservation expires
+	Expires string `protobuf:"bytes,5,opt,name=expires,proto3" json:"expires,omitempty"`
+}
+
+func (x *Reservation) Reset() {
+	*x = Reservation{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_app_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Reservation) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Reservation) ProtoMessage() {}
+
+func (x *Reservation) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_app_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 Reservation.ProtoReflect.Descriptor instead.
+func (*Reservation) Descriptor() ([]byte, []int) {
+	return file_proto_app_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *Reservation) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+func (x *Reservation) GetOwner() string {
+	if x != nil {
+		return x.Owner
+	}
+	return ""
+}
+
+func (x *Reservation) GetToken() string {
+	if x != nil {
+		return x.Token
+	}
+	return ""
+}
+
+func (x *Reservation) GetCreated() string {
+	if x != nil {
+		return x.Created
+	}
+	return ""
+}
+
+func (x *Reservation) GetExpires() string {
+	if x != nil {
+		return x.Expires
+	}
+	return ""
+}
+
+// Reserve your app name
+type ReserveRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// name of your app e.g helloworld
+	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+}
+
+func (x *ReserveRequest) Reset() {
+	*x = ReserveRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_app_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ReserveRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ReserveRequest) ProtoMessage() {}
+
+func (x *ReserveRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_app_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 ReserveRequest.ProtoReflect.Descriptor instead.
+func (*ReserveRequest) Descriptor() ([]byte, []int) {
+	return file_proto_app_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *ReserveRequest) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+type ReserveResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Reservation *Reservation `protobuf:"bytes,1,opt,name=reservation,proto3" json:"reservation,omitempty"`
+}
+
+func (x *ReserveResponse) Reset() {
+	*x = ReserveResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_app_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ReserveResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ReserveResponse) ProtoMessage() {}
+
+func (x *ReserveResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_app_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 ReserveResponse.ProtoReflect.Descriptor instead.
+func (*ReserveResponse) Descriptor() ([]byte, []int) {
+	return file_proto_app_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *ReserveResponse) GetReservation() *Reservation {
+	if x != nil {
+		return x.Reservation
+	}
+	return nil
+}
+
+var File_proto_app_proto protoreflect.FileDescriptor
+
+var file_proto_app_proto_rawDesc = []byte{
+	0x0a, 0x0f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f, 0x61, 0x70, 0x70, 0x2e, 0x70, 0x72, 0x6f, 0x74,
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+}
+
+var (
+	file_proto_app_proto_rawDescOnce sync.Once
+	file_proto_app_proto_rawDescData = file_proto_app_proto_rawDesc
+)
+
+func file_proto_app_proto_rawDescGZIP() []byte {
+	file_proto_app_proto_rawDescOnce.Do(func() {
+		file_proto_app_proto_rawDescData = protoimpl.X.CompressGZIP(file_proto_app_proto_rawDescData)
+	})
+	return file_proto_app_proto_rawDescData
+}
+
+var file_proto_app_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
+var file_proto_app_proto_goTypes = []interface{}{
+	(*Reservation)(nil),     // 0: app.Reservation
+	(*ReserveRequest)(nil),  // 1: app.ReserveRequest
+	(*ReserveResponse)(nil), // 2: app.ReserveResponse
+}
+var file_proto_app_proto_depIdxs = []int32{
+	0, // 0: app.ReserveResponse.reservation:type_name -> app.Reservation
+	1, // 1: app.App.Reserve:input_type -> app.ReserveRequest
+	2, // 2: app.App.Reserve:output_type -> app.ReserveResponse
+	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_app_proto_init() }
+func file_proto_app_proto_init() {
+	if File_proto_app_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_proto_app_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Reservation); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_proto_app_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ReserveRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_proto_app_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ReserveResponse); 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_app_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   3,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_proto_app_proto_goTypes,
+		DependencyIndexes: file_proto_app_proto_depIdxs,
+		MessageInfos:      file_proto_app_proto_msgTypes,
+	}.Build()
+	File_proto_app_proto = out.File
+	file_proto_app_proto_rawDesc = nil
+	file_proto_app_proto_goTypes = nil
+	file_proto_app_proto_depIdxs = nil
+}

app/proto/app.pb.micro.go

@@ -0,0 +1,93 @@
+// Code generated by protoc-gen-micro. DO NOT EDIT.
+// source: proto/app.proto
+
+package app
+
+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 App service
+
+func NewAppEndpoints() []*api.Endpoint {
+	return []*api.Endpoint{}
+}
+
+// Client API for App service
+
+type AppService interface {
+	Reserve(ctx context.Context, in *ReserveRequest, opts ...client.CallOption) (*ReserveResponse, error)
+}
+
+type appService struct {
+	c    client.Client
+	name string
+}
+
+func NewAppService(name string, c client.Client) AppService {
+	return &appService{
+		c:    c,
+		name: name,
+	}
+}
+
+func (c *appService) Reserve(ctx context.Context, in *ReserveRequest, opts ...client.CallOption) (*ReserveResponse, error) {
+	req := c.c.NewRequest(c.name, "App.Reserve", in)
+	out := new(ReserveResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// Server API for App service
+
+type AppHandler interface {
+	Reserve(context.Context, *ReserveRequest, *ReserveResponse) error
+}
+
+func RegisterAppHandler(s server.Server, hdlr AppHandler, opts ...server.HandlerOption) error {
+	type app interface {
+		Reserve(ctx context.Context, in *ReserveRequest, out *ReserveResponse) error
+	}
+	type App struct {
+		app
+	}
+	h := &appHandler{hdlr}
+	return s.Handle(s.NewHandler(&App{h}, opts...))
+}
+
+type appHandler struct {
+	AppHandler
+}
+
+func (h *appHandler) Reserve(ctx context.Context, in *ReserveRequest, out *ReserveResponse) error {
+	return h.AppHandler.Reserve(ctx, in, out)
+}

app/proto/app.proto

@@ -0,0 +1,32 @@
+syntax = "proto3";
+
+package app;
+
+option go_package = "./proto;app";
+
+service App {
+	rpc Reserve(ReserveRequest) returns (ReserveResponse) {}
+}
+
+message Reservation {
+	// name of the app
+	string name = 1;
+	// owner id
+	string owner = 2;
+	// associated token
+	string token = 3;
+	// time of reservation
+	string created = 4;
+	// time reservation expires
+	string expires = 5;
+}
+
+// Reserve your app name
+message ReserveRequest {
+	// name of your app e.g helloworld
+	string name = 1;
+}
+
+message ReserveResponse {
+	Reservation reservation = 1;
+}

app/publicapi.json

@@ -0,0 +1,9 @@
+{
+  "name": "app",
+  "icon": "💭",
+  "category": "hosting",
+  "display_name": "Apps",
+  "pricing": {
+    "App.Reserve": 1000000
+  }
+}