add the cache service (#112)

cache/.gitignore

@@ -0,0 +1,2 @@
+
+cache

cache/Dockerfile

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

cache/Makefile

@@ -0,0 +1,29 @@
+
+GOPATH:=$(shell go env GOPATH)
+
+.PHONY: api
+api:
+	protoc --openapi_out=. --proto_path=. proto/cache.proto
+
+.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: proto
+proto:
+	protoc --proto_path=. --micro_out=. --go_out=:. proto/cache.proto
+	
+.PHONY: build
+build:
+	go build -o cache *.go
+
+.PHONY: test
+test:
+	go test -v ./... -cover
+
+.PHONY: docker
+docker:
+	docker build . -t cache:latest

cache/README.md

@@ -0,0 +1,23 @@
+# Cache Service
+
+This is the Cache service
+
+Generated with
+
+```
+micro new cache
+```
+
+## Usage
+
+Generate the proto code
+
+```
+make proto
+```
+
+Run the service
+
+```
+micro run .
+```

cache/generate.go

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

cache/handler/cache.go

@@ -0,0 +1,90 @@
+package handler
+
+import (
+	"context"
+	"time"
+
+	"github.com/micro/micro/v3/service/errors"
+	pb "github.com/micro/services/cache/proto"
+	"github.com/micro/services/pkg/cache"
+)
+
+type Cache struct{}
+
+func (c *Cache) Get(ctx context.Context, req *pb.GetRequest, rsp *pb.GetResponse) error {
+	if len(req.Key) == 0 {
+		return errors.BadRequest("cache.get", "missing key")
+	}
+
+	item := new(pb.Item)
+	item.Key = req.Key
+
+	if err := cache.Context(ctx).Get(req.Key, item.Value); err != nil {
+		return errors.InternalServerError("cache.get", err.Error())
+	}
+
+	return nil
+}
+
+func (c *Cache) Set(ctx context.Context, req *pb.SetRequest, rsp *pb.SetResponse) error {
+	if len(req.Key) == 0 {
+		return errors.BadRequest("cache.get", "missing key")
+	}
+
+	ttl := time.Time{}
+
+	if req.Ttl > 0 {
+		ttl = time.Now().Add(time.Duration(req.Ttl) * time.Second)
+	}
+
+	if err := cache.Context(ctx).Set(req.Key, req.Value, ttl); err != nil {
+		return errors.InternalServerError("cache.set", err.Error())
+	}
+
+	return nil
+}
+
+func (c *Cache) Delete(ctx context.Context, req *pb.DeleteRequest, rsp *pb.DeleteResponse) error {
+	if len(req.Key) == 0 {
+		return errors.BadRequest("cache.get", "missing key")
+	}
+	if err := cache.Context(ctx).Delete(req.Key); err != nil {
+		return errors.InternalServerError("cache.delete", err.Error())
+	}
+	return nil
+}
+
+func (c *Cache) Increment(ctx context.Context, req *pb.IncrementRequest, rsp *pb.IncrementResponse) error {
+	if len(req.Key) == 0 {
+		return errors.BadRequest("cache.get", "missing key")
+	}
+
+	// increment the value
+	v, err := cache.Context(ctx).Increment(req.Key, req.Value)
+	if err != nil {
+		return errors.InternalServerError("cache.increment", err.Error())
+	}
+
+	// set the response value
+	rsp.Key = req.Key
+	rsp.Value = v
+
+	return nil
+}
+
+func (c *Cache) Decrement(ctx context.Context, req *pb.DecrementRequest, rsp *pb.DecrementResponse) error {
+	if len(req.Key) == 0 {
+		return errors.BadRequest("cache.get", "missing key")
+	}
+
+	v, err := cache.Context(ctx).Decrement(req.Key, req.Value)
+	if err != nil {
+		return errors.InternalServerError("cache.decrement", err.Error())
+	}
+
+	// set the response value
+	rsp.Key = req.Key
+	rsp.Value = v
+
+	return nil
+}

cache/main.go

@@ -0,0 +1,25 @@
+package main
+
+import (
+	"github.com/micro/services/cache/handler"
+	pb "github.com/micro/services/cache/proto"
+
+	"github.com/micro/micro/v3/service"
+	"github.com/micro/micro/v3/service/logger"
+)
+
+func main() {
+	// Create service
+	srv := service.New(
+		service.Name("cache"),
+		service.Version("latest"),
+	)
+
+	// Register handler
+	pb.RegisterCacheHandler(srv.Server(), new(handler.Cache))
+
+	// Run service
+	if err := srv.Run(); err != nil {
+		logger.Fatal(err)
+	}
+}

cache/micro.mu

@@ -0,0 +1 @@
+service cache

cache/proto/cache.pb.go

@@ -0,0 +1,893 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.26.0
+// 	protoc        v3.15.6
+// source: proto/cache.proto
+
+package cache
+
+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 Item struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The key
+	Key string `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+	// The value
+	Value string `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"`
+	// Time to live in seconds
+	Ttl int64 `protobuf:"varint,3,opt,name=ttl,proto3" json:"ttl,omitempty"`
+}
+
+func (x *Item) Reset() {
+	*x = Item{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_cache_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Item) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Item) ProtoMessage() {}
+
+func (x *Item) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_cache_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 Item.ProtoReflect.Descriptor instead.
+func (*Item) Descriptor() ([]byte, []int) {
+	return file_proto_cache_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *Item) GetKey() string {
+	if x != nil {
+		return x.Key
+	}
+	return ""
+}
+
+func (x *Item) GetValue() string {
+	if x != nil {
+		return x.Value
+	}
+	return ""
+}
+
+func (x *Item) GetTtl() int64 {
+	if x != nil {
+		return x.Ttl
+	}
+	return 0
+}
+
+// Get an item from the cache by key
+type GetRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The key to retrieve
+	Key string `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+}
+
+func (x *GetRequest) Reset() {
+	*x = GetRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_cache_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *GetRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetRequest) ProtoMessage() {}
+
+func (x *GetRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_cache_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 GetRequest.ProtoReflect.Descriptor instead.
+func (*GetRequest) Descriptor() ([]byte, []int) {
+	return file_proto_cache_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *GetRequest) GetKey() string {
+	if x != nil {
+		return x.Key
+	}
+	return ""
+}
+
+type GetResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The item in the cache
+	Item *Item `protobuf:"bytes,1,opt,name=item,proto3" json:"item,omitempty"`
+}
+
+func (x *GetResponse) Reset() {
+	*x = GetResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_cache_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *GetResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetResponse) ProtoMessage() {}
+
+func (x *GetResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_cache_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 GetResponse.ProtoReflect.Descriptor instead.
+func (*GetResponse) Descriptor() ([]byte, []int) {
+	return file_proto_cache_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *GetResponse) GetItem() *Item {
+	if x != nil {
+		return x.Item
+	}
+	return nil
+}
+
+// Set an item in the cache
+type SetRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The key to update
+	Key string `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+	// The value to set
+	Value string `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"`
+	// Time to live in seconds
+	Ttl int64 `protobuf:"varint,3,opt,name=ttl,proto3" json:"ttl,omitempty"`
+}
+
+func (x *SetRequest) Reset() {
+	*x = SetRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_cache_proto_msgTypes[3]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SetRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SetRequest) ProtoMessage() {}
+
+func (x *SetRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_cache_proto_msgTypes[3]
+	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 SetRequest.ProtoReflect.Descriptor instead.
+func (*SetRequest) Descriptor() ([]byte, []int) {
+	return file_proto_cache_proto_rawDescGZIP(), []int{3}
+}
+
+func (x *SetRequest) GetKey() string {
+	if x != nil {
+		return x.Key
+	}
+	return ""
+}
+
+func (x *SetRequest) GetValue() string {
+	if x != nil {
+		return x.Value
+	}
+	return ""
+}
+
+func (x *SetRequest) GetTtl() int64 {
+	if x != nil {
+		return x.Ttl
+	}
+	return 0
+}
+
+type SetResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Returns "ok" if successful
+	Status string `protobuf:"bytes,1,opt,name=status,proto3" json:"status,omitempty"`
+}
+
+func (x *SetResponse) Reset() {
+	*x = SetResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_cache_proto_msgTypes[4]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SetResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SetResponse) ProtoMessage() {}
+
+func (x *SetResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_cache_proto_msgTypes[4]
+	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 SetResponse.ProtoReflect.Descriptor instead.
+func (*SetResponse) Descriptor() ([]byte, []int) {
+	return file_proto_cache_proto_rawDescGZIP(), []int{4}
+}
+
+func (x *SetResponse) GetStatus() string {
+	if x != nil {
+		return x.Status
+	}
+	return ""
+}
+
+// Delete a value from the cache
+type DeleteRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The key to delete
+	Key string `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+}
+
+func (x *DeleteRequest) Reset() {
+	*x = DeleteRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_cache_proto_msgTypes[5]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DeleteRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DeleteRequest) ProtoMessage() {}
+
+func (x *DeleteRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_cache_proto_msgTypes[5]
+	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 DeleteRequest.ProtoReflect.Descriptor instead.
+func (*DeleteRequest) Descriptor() ([]byte, []int) {
+	return file_proto_cache_proto_rawDescGZIP(), []int{5}
+}
+
+func (x *DeleteRequest) GetKey() string {
+	if x != nil {
+		return x.Key
+	}
+	return ""
+}
+
+type DeleteResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Returns "ok" if successful
+	Status string `protobuf:"bytes,1,opt,name=status,proto3" json:"status,omitempty"`
+}
+
+func (x *DeleteResponse) Reset() {
+	*x = DeleteResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_cache_proto_msgTypes[6]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DeleteResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DeleteResponse) ProtoMessage() {}
+
+func (x *DeleteResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_cache_proto_msgTypes[6]
+	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 DeleteResponse.ProtoReflect.Descriptor instead.
+func (*DeleteResponse) Descriptor() ([]byte, []int) {
+	return file_proto_cache_proto_rawDescGZIP(), []int{6}
+}
+
+func (x *DeleteResponse) GetStatus() string {
+	if x != nil {
+		return x.Status
+	}
+	return ""
+}
+
+// Increment a value (if its a number)
+type IncrementRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The key to increment
+	Key string `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+	// The value to add
+	Value int64 `protobuf:"varint,2,opt,name=value,proto3" json:"value,omitempty"`
+}
+
+func (x *IncrementRequest) Reset() {
+	*x = IncrementRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_cache_proto_msgTypes[7]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *IncrementRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*IncrementRequest) ProtoMessage() {}
+
+func (x *IncrementRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_cache_proto_msgTypes[7]
+	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 IncrementRequest.ProtoReflect.Descriptor instead.
+func (*IncrementRequest) Descriptor() ([]byte, []int) {
+	return file_proto_cache_proto_rawDescGZIP(), []int{7}
+}
+
+func (x *IncrementRequest) GetKey() string {
+	if x != nil {
+		return x.Key
+	}
+	return ""
+}
+
+func (x *IncrementRequest) GetValue() int64 {
+	if x != nil {
+		return x.Value
+	}
+	return 0
+}
+
+type IncrementResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The key incremented
+	Key string `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+	// The result value
+	Value int64 `protobuf:"varint,2,opt,name=value,proto3" json:"value,omitempty"`
+}
+
+func (x *IncrementResponse) Reset() {
+	*x = IncrementResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_cache_proto_msgTypes[8]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *IncrementResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*IncrementResponse) ProtoMessage() {}
+
+func (x *IncrementResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_cache_proto_msgTypes[8]
+	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 IncrementResponse.ProtoReflect.Descriptor instead.
+func (*IncrementResponse) Descriptor() ([]byte, []int) {
+	return file_proto_cache_proto_rawDescGZIP(), []int{8}
+}
+
+func (x *IncrementResponse) GetKey() string {
+	if x != nil {
+		return x.Key
+	}
+	return ""
+}
+
+func (x *IncrementResponse) GetValue() int64 {
+	if x != nil {
+		return x.Value
+	}
+	return 0
+}
+
+// Decrement a value (if its a number)
+type DecrementRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The key to decrement
+	Key string `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+	// The delta value to decrement
+	Value int64 `protobuf:"varint,2,opt,name=value,proto3" json:"value,omitempty"`
+}
+
+func (x *DecrementRequest) Reset() {
+	*x = DecrementRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_cache_proto_msgTypes[9]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DecrementRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DecrementRequest) ProtoMessage() {}
+
+func (x *DecrementRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_cache_proto_msgTypes[9]
+	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 DecrementRequest.ProtoReflect.Descriptor instead.
+func (*DecrementRequest) Descriptor() ([]byte, []int) {
+	return file_proto_cache_proto_rawDescGZIP(), []int{9}
+}
+
+func (x *DecrementRequest) GetKey() string {
+	if x != nil {
+		return x.Key
+	}
+	return ""
+}
+
+func (x *DecrementRequest) GetValue() int64 {
+	if x != nil {
+		return x.Value
+	}
+	return 0
+}
+
+type DecrementResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The key of the item
+	Key string `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+	// The result value of the item
+	Value int64 `protobuf:"varint,2,opt,name=value,proto3" json:"value,omitempty"`
+}
+
+func (x *DecrementResponse) Reset() {
+	*x = DecrementResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_cache_proto_msgTypes[10]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DecrementResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DecrementResponse) ProtoMessage() {}
+
+func (x *DecrementResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_cache_proto_msgTypes[10]
+	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 DecrementResponse.ProtoReflect.Descriptor instead.
+func (*DecrementResponse) Descriptor() ([]byte, []int) {
+	return file_proto_cache_proto_rawDescGZIP(), []int{10}
+}
+
+func (x *DecrementResponse) GetKey() string {
+	if x != nil {
+		return x.Key
+	}
+	return ""
+}
+
+func (x *DecrementResponse) GetValue() int64 {
+	if x != nil {
+		return x.Value
+	}
+	return 0
+}
+
+var File_proto_cache_proto protoreflect.FileDescriptor
+
+var file_proto_cache_proto_rawDesc = []byte{
+	0x0a, 0x11, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f, 0x63, 0x61, 0x63, 0x68, 0x65, 0x2e, 0x70, 0x72,
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+	0x68, 0x65, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_proto_cache_proto_rawDescOnce sync.Once
+	file_proto_cache_proto_rawDescData = file_proto_cache_proto_rawDesc
+)
+
+func file_proto_cache_proto_rawDescGZIP() []byte {
+	file_proto_cache_proto_rawDescOnce.Do(func() {
+		file_proto_cache_proto_rawDescData = protoimpl.X.CompressGZIP(file_proto_cache_proto_rawDescData)
+	})
+	return file_proto_cache_proto_rawDescData
+}
+
+var file_proto_cache_proto_msgTypes = make([]protoimpl.MessageInfo, 11)
+var file_proto_cache_proto_goTypes = []interface{}{
+	(*Item)(nil),              // 0: cache.Item
+	(*GetRequest)(nil),        // 1: cache.GetRequest
+	(*GetResponse)(nil),       // 2: cache.GetResponse
+	(*SetRequest)(nil),        // 3: cache.SetRequest
+	(*SetResponse)(nil),       // 4: cache.SetResponse
+	(*DeleteRequest)(nil),     // 5: cache.DeleteRequest
+	(*DeleteResponse)(nil),    // 6: cache.DeleteResponse
+	(*IncrementRequest)(nil),  // 7: cache.IncrementRequest
+	(*IncrementResponse)(nil), // 8: cache.IncrementResponse
+	(*DecrementRequest)(nil),  // 9: cache.DecrementRequest
+	(*DecrementResponse)(nil), // 10: cache.DecrementResponse
+}
+var file_proto_cache_proto_depIdxs = []int32{
+	0,  // 0: cache.GetResponse.item:type_name -> cache.Item
+	1,  // 1: cache.Cache.Get:input_type -> cache.GetRequest
+	3,  // 2: cache.Cache.Set:input_type -> cache.SetRequest
+	5,  // 3: cache.Cache.Delete:input_type -> cache.DeleteRequest
+	7,  // 4: cache.Cache.Increment:input_type -> cache.IncrementRequest
+	9,  // 5: cache.Cache.Decrement:input_type -> cache.DecrementRequest
+	2,  // 6: cache.Cache.Get:output_type -> cache.GetResponse
+	4,  // 7: cache.Cache.Set:output_type -> cache.SetResponse
+	6,  // 8: cache.Cache.Delete:output_type -> cache.DeleteResponse
+	8,  // 9: cache.Cache.Increment:output_type -> cache.IncrementResponse
+	10, // 10: cache.Cache.Decrement:output_type -> cache.DecrementResponse
+	6,  // [6:11] is the sub-list for method output_type
+	1,  // [1:6] 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_cache_proto_init() }
+func file_proto_cache_proto_init() {
+	if File_proto_cache_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_proto_cache_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Item); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_proto_cache_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*GetRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_proto_cache_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*GetResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_proto_cache_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SetRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_proto_cache_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SetResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_proto_cache_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DeleteRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_proto_cache_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DeleteResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_proto_cache_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*IncrementRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_proto_cache_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*IncrementResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_proto_cache_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DecrementRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_proto_cache_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DecrementResponse); 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_cache_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   11,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_proto_cache_proto_goTypes,
+		DependencyIndexes: file_proto_cache_proto_depIdxs,
+		MessageInfos:      file_proto_cache_proto_msgTypes,
+	}.Build()
+	File_proto_cache_proto = out.File
+	file_proto_cache_proto_rawDesc = nil
+	file_proto_cache_proto_goTypes = nil
+	file_proto_cache_proto_depIdxs = nil
+}

cache/proto/cache.pb.micro.go

@@ -0,0 +1,161 @@
+// Code generated by protoc-gen-micro. DO NOT EDIT.
+// source: proto/cache.proto
+
+package cache
+
+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 Cache service
+
+func NewCacheEndpoints() []*api.Endpoint {
+	return []*api.Endpoint{}
+}
+
+// Client API for Cache service
+
+type CacheService interface {
+	Get(ctx context.Context, in *GetRequest, opts ...client.CallOption) (*GetResponse, error)
+	Set(ctx context.Context, in *SetRequest, opts ...client.CallOption) (*SetResponse, error)
+	Delete(ctx context.Context, in *DeleteRequest, opts ...client.CallOption) (*DeleteResponse, error)
+	Increment(ctx context.Context, in *IncrementRequest, opts ...client.CallOption) (*IncrementResponse, error)
+	Decrement(ctx context.Context, in *DecrementRequest, opts ...client.CallOption) (*DecrementResponse, error)
+}
+
+type cacheService struct {
+	c    client.Client
+	name string
+}
+
+func NewCacheService(name string, c client.Client) CacheService {
+	return &cacheService{
+		c:    c,
+		name: name,
+	}
+}
+
+func (c *cacheService) Get(ctx context.Context, in *GetRequest, opts ...client.CallOption) (*GetResponse, error) {
+	req := c.c.NewRequest(c.name, "Cache.Get", in)
+	out := new(GetResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *cacheService) Set(ctx context.Context, in *SetRequest, opts ...client.CallOption) (*SetResponse, error) {
+	req := c.c.NewRequest(c.name, "Cache.Set", in)
+	out := new(SetResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *cacheService) Delete(ctx context.Context, in *DeleteRequest, opts ...client.CallOption) (*DeleteResponse, error) {
+	req := c.c.NewRequest(c.name, "Cache.Delete", in)
+	out := new(DeleteResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *cacheService) Increment(ctx context.Context, in *IncrementRequest, opts ...client.CallOption) (*IncrementResponse, error) {
+	req := c.c.NewRequest(c.name, "Cache.Increment", in)
+	out := new(IncrementResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *cacheService) Decrement(ctx context.Context, in *DecrementRequest, opts ...client.CallOption) (*DecrementResponse, error) {
+	req := c.c.NewRequest(c.name, "Cache.Decrement", in)
+	out := new(DecrementResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// Server API for Cache service
+
+type CacheHandler interface {
+	Get(context.Context, *GetRequest, *GetResponse) error
+	Set(context.Context, *SetRequest, *SetResponse) error
+	Delete(context.Context, *DeleteRequest, *DeleteResponse) error
+	Increment(context.Context, *IncrementRequest, *IncrementResponse) error
+	Decrement(context.Context, *DecrementRequest, *DecrementResponse) error
+}
+
+func RegisterCacheHandler(s server.Server, hdlr CacheHandler, opts ...server.HandlerOption) error {
+	type cache interface {
+		Get(ctx context.Context, in *GetRequest, out *GetResponse) error
+		Set(ctx context.Context, in *SetRequest, out *SetResponse) error
+		Delete(ctx context.Context, in *DeleteRequest, out *DeleteResponse) error
+		Increment(ctx context.Context, in *IncrementRequest, out *IncrementResponse) error
+		Decrement(ctx context.Context, in *DecrementRequest, out *DecrementResponse) error
+	}
+	type Cache struct {
+		cache
+	}
+	h := &cacheHandler{hdlr}
+	return s.Handle(s.NewHandler(&Cache{h}, opts...))
+}
+
+type cacheHandler struct {
+	CacheHandler
+}
+
+func (h *cacheHandler) Get(ctx context.Context, in *GetRequest, out *GetResponse) error {
+	return h.CacheHandler.Get(ctx, in, out)
+}
+
+func (h *cacheHandler) Set(ctx context.Context, in *SetRequest, out *SetResponse) error {
+	return h.CacheHandler.Set(ctx, in, out)
+}
+
+func (h *cacheHandler) Delete(ctx context.Context, in *DeleteRequest, out *DeleteResponse) error {
+	return h.CacheHandler.Delete(ctx, in, out)
+}
+
+func (h *cacheHandler) Increment(ctx context.Context, in *IncrementRequest, out *IncrementResponse) error {
+	return h.CacheHandler.Increment(ctx, in, out)
+}
+
+func (h *cacheHandler) Decrement(ctx context.Context, in *DecrementRequest, out *DecrementResponse) error {
+	return h.CacheHandler.Decrement(ctx, in, out)
+}

cache/proto/cache.proto

@@ -0,0 +1,89 @@
+syntax = "proto3";
+
+package cache;
+
+option go_package = "./proto;cache";
+
+service Cache {
+	rpc Get(GetRequest) returns (GetResponse) {}
+	rpc Set(SetRequest) returns (SetResponse) {}
+	rpc Delete(DeleteRequest) returns (DeleteResponse) {}
+	rpc Increment(IncrementRequest) returns (IncrementResponse) {}
+	rpc Decrement(DecrementRequest) returns (DecrementResponse) {}
+}
+
+message Item {
+	// The key
+	string key = 1;
+	// The value
+	string value = 2;
+	// Time to live in seconds
+	int64 ttl = 3;
+}
+
+// Get an item from the cache by key
+message GetRequest {
+	// The key to retrieve
+	string key = 1;
+}
+
+message GetResponse {
+	// The item in the cache
+	Item item = 1;
+}
+
+// Set an item in the cache
+message SetRequest {
+	// The key to update
+	string key = 1;
+	// The value to set
+	string value = 2;
+	// Time to live in seconds
+	int64 ttl = 3;
+}
+
+message SetResponse {
+	// Returns "ok" if successful
+	string status = 1;
+}
+
+// Delete a value from the cache
+message DeleteRequest {
+	// The key to delete
+	string key = 1;
+}
+
+message DeleteResponse {
+	// Returns "ok" if successful
+	string status = 1;
+}
+
+// Increment a value (if its a number)
+message IncrementRequest {
+	// The key to increment
+	string key = 1;
+	// The value to add
+	int64 value = 2;
+}
+
+message IncrementResponse {
+	// The key incremented
+	string key = 1;
+	// The result value
+	int64 value = 2;
+}
+
+// Decrement a value (if its a number)
+message DecrementRequest {
+	// The key to decrement
+	string key = 1;
+	// The delta value to decrement
+	int64 value = 2;
+}
+
+message DecrementResponse {
+	// The key of the item
+	string key = 1;
+	// The result value of the item
+	int64 value = 2;
+}