Function service (#227)

function/.gitignore

@@ -0,0 +1,2 @@
+
+function

function/Dockerfile

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

function/Makefile

@@ -0,0 +1,26 @@
+
+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
+.PHONY: proto
+proto:
+	protoc --proto_path=. --micro_out=. --go_out=:. proto/function.proto
+
+.PHONY: api
+api:
+	protoc --openapi_out=. --proto_path=. proto/function.proto
+
+.PHONY: build
+build:
+	go build -o function *.go
+
+.PHONY: test
+test:
+	go test -v ./... -cover
+
+.PHONY: docker
+docker:
+	docker build . -t function:latest

function/README.md

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

function/examples.json

@@ -0,0 +1,55 @@
+{
+  "deploy": [
+    {
+      "title": "Deploy a function",
+      "request": {
+        "repo": "github.com/crufter/gcloud-nodejs-test",
+        "name": "my-first-func",
+        "entrypoint": "helloworld",
+        "project": "tests"
+      },
+      "response": {}
+    }
+  ],
+  "call": [
+    {
+      "title": "Call a function",
+      "request": {
+        "name": "my-first-func",
+        "request": {}
+      },
+      "response": {
+        "response": {
+          "message": "Hello World!"
+        }
+      }
+    }
+  ],
+  "list": [
+    {
+      "title": "List functions",
+      "request": {},
+      "response": {
+        "functions": [
+          {
+            "project": "a",
+            "name": "test4",
+            "entrypoint": "helloworld",
+            "repo": "github.com/crufter/gcloud-nodejs-test",
+            "subfolder": ""
+          }
+        ]
+      }
+    }
+  ],
+  "delete": [
+    {
+      "title": "Delete a function",
+      "request": {
+        "project": "tests",
+        "name": "my-first-func"
+      },
+      "response": {}
+    }
+  ]
+}

function/generate.go

@@ -0,0 +1,2 @@
+package main
+//go:generate make proto

function/handler/function.go

@@ -0,0 +1,261 @@
+package handler
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"os/exec"
+	"path/filepath"
+	"strings"
+
+	"github.com/micro/micro/v3/service/config"
+	log "github.com/micro/micro/v3/service/logger"
+
+	"github.com/micro/micro/v3/service/runtime/source/git"
+
+	_struct "github.com/golang/protobuf/ptypes/struct"
+	db "github.com/micro/services/db/proto"
+	function "github.com/micro/services/function/proto"
+	"github.com/micro/services/pkg/tenant"
+)
+
+type Function struct {
+	project string
+	// eg. https://us-central1-m3o-apis.cloudfunctions.net/
+	address string
+	db      db.DbService
+}
+
+type Func struct {
+	Name    string `json:"name"`
+	Tenant  string `json:"tenant"`
+	Project string `json:"project"`
+}
+
+func NewFunction(db db.DbService) *Function {
+	v, err := config.Get("function.service_account_json")
+	if err != nil {
+		log.Fatalf("function.service_account_json: %v", err)
+	}
+	keyfile := v.Bytes()
+	if len(keyfile) == 0 {
+		log.Fatalf("empty keyfile")
+	}
+
+	v, err = config.Get("function.address")
+	if err != nil {
+		log.Fatalf("function.address: %v", err)
+	}
+	address := v.String("")
+	if len(address) == 0 {
+		log.Fatalf("empty address")
+	}
+
+	v, err = config.Get("function.project")
+	if err != nil {
+		log.Fatalf("function.project: %v", err)
+	}
+	project := v.String("")
+	if len(project) == 0 {
+		log.Fatalf("empty project")
+	}
+
+	v, err = config.Get("function.service_account")
+	if err != nil {
+		log.Fatalf("function.service_account: %v", err)
+	}
+	accName := v.String("")
+
+	m := map[string]interface{}{}
+	err = json.Unmarshal(keyfile, &m)
+	if err != nil {
+		log.Fatalf("invalid json: %v", err)
+	}
+
+	// only root
+	err = ioutil.WriteFile("/acc.json", keyfile, 0700)
+	if err != nil {
+		log.Fatalf("function.service_account: %v", err)
+	}
+
+	// DO THIS STEP
+	// https://cloud.google.com/functions/docs/reference/iam/roles#additional-configuration
+
+	// https://cloud.google.com/sdk/docs/authorizing#authorizing_with_a_service_account
+	outp, err := exec.Command("gcloud", "auth", "activate-service-account", accName, "--key-file", "/acc.json").CombinedOutput()
+	if err != nil {
+		log.Fatalf(string(outp))
+	}
+
+	outp, err = exec.Command("gcloud", "auth", "list").CombinedOutput()
+	if err != nil {
+		log.Fatalf(string(outp))
+	}
+	log.Info(string(outp))
+	return &Function{project: project, address: address, db: db}
+}
+
+func (e *Function) Deploy(ctx context.Context, req *function.DeployRequest, rsp *function.DeployResponse) error {
+	log.Info("Received Function.Deploy request")
+	gitter := git.NewGitter(map[string]string{})
+	err := gitter.Checkout(req.Repo, "master")
+	if err != nil {
+		return err
+	}
+
+	tenantId, ok := tenant.FromContext(ctx)
+	if !ok {
+		tenantId = "micro"
+	}
+	multitenantPrefix := strings.Replace(tenantId, "/", "-", -1)
+	if req.Entrypoint == "" {
+		req.Entrypoint = req.Name
+	}
+	project := req.Project
+	if project == "" {
+		project = "default"
+	}
+
+	readRsp, err := e.db.Read(ctx, &db.ReadRequest{
+		Table: "functions",
+		Query: fmt.Sprintf("tenantId == '%v' and project == '%v' and name == '%v'", tenantId, project, req.Name),
+	})
+	if err != nil {
+		return err
+	}
+
+	go func() {
+		// https://jsoverson.medium.com/how-to-deploy-node-js-functions-to-google-cloud-8bba05e9c10a
+		cmd := exec.Command("gcloud", "functions", "deploy", multitenantPrefix+"-"+req.Name, "--region", "europe-west1", "--allow-unauthenticated", "--entry-point", req.Entrypoint, "--trigger-http", "--project", e.project, "--runtime", "nodejs14")
+		cmd.Dir = filepath.Join(gitter.RepoDir(), req.Subfolder)
+		outp, err := cmd.CombinedOutput()
+		if err != nil {
+			log.Error(fmt.Errorf(string(outp)))
+		}
+	}()
+
+	s := &_struct.Struct{}
+	id := fmt.Sprintf("%v-%v-%v", tenantId, project, req.Name)
+	jso, _ := json.Marshal(map[string]interface{}{
+		"id":         id,
+		"project":    project,
+		"name":       req.Name,
+		"tenantId":   tenantId,
+		"repo":       req.Repo,
+		"subfolder":  req.Subfolder,
+		"entrypoint": req.Entrypoint,
+	})
+	err = s.UnmarshalJSON(jso)
+	if err != nil {
+		return err
+	}
+	if len(readRsp.Records) > 0 {
+		_, err = e.db.Update(ctx, &db.UpdateRequest{
+			Table:  "functions",
+			Record: s,
+			Id:     id,
+		})
+		if err != nil {
+			log.Error(err)
+		}
+		return err
+	}
+	_, err = e.db.Create(ctx, &db.CreateRequest{
+		Table:  "functions",
+		Record: s,
+	})
+	if err != nil {
+		log.Error(err)
+	}
+	return err
+}
+
+func (e *Function) Call(ctx context.Context, req *function.CallRequest, rsp *function.CallResponse) error {
+	log.Info("Received Function.Call request")
+
+	tenantId, ok := tenant.FromContext(ctx)
+	if !ok {
+		tenantId = "micro"
+	}
+	multitenantPrefix := strings.Replace(tenantId, "/", "-", -1)
+
+	url := e.address + multitenantPrefix + "-" + req.Name
+	fmt.Println("URL:>", url)
+
+	js, _ := json.Marshal(req.Request)
+	if req.Request == nil || len(req.Request.Fields) == 0 {
+		js = []byte("{}")
+	}
+	r, err := http.NewRequest("POST", url, bytes.NewBuffer(js))
+	if err != nil {
+		return err
+	}
+	r.Header.Set("Content-Type", "application/json")
+
+	client := &http.Client{}
+	resp, err := client.Do(r)
+	if err != nil {
+		log.Errorf("error making request %v", err)
+		return err
+	}
+	defer resp.Body.Close()
+
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		log.Errorf("error reading body %v", string(body))
+		return err
+	}
+
+	err = json.Unmarshal(body, &rsp.Response)
+	if err != nil {
+		log.Errorf("error unmarshaling %v", string(body))
+		return err
+	}
+
+	return nil
+}
+
+func (e *Function) Delete(ctx context.Context, req *function.DeleteRequest, rsp *function.DeleteResponse) error {
+	log.Info("Received Function.Delete request")
+	return fmt.Errorf("not implemented yet")
+}
+
+func (e *Function) List(ctx context.Context, req *function.ListRequest, rsp *function.ListResponse) error {
+	log.Info("Received Function.List request")
+
+	tenantId, ok := tenant.FromContext(ctx)
+	if !ok {
+		tenantId = "micro"
+	}
+	project := req.Project
+
+	q := fmt.Sprintf(`tenantId == "%v"`, tenantId)
+	if project != "" {
+		q += fmt.Sprintf(` and project == "%v"`, project)
+	}
+	log.Infof("Making query %v", q)
+	readRsp, err := e.db.Read(ctx, &db.ReadRequest{
+		Table: "functions",
+		Query: q,
+	})
+	if err != nil {
+		return err
+	}
+	log.Info(readRsp.Records)
+
+	rsp.Functions = []*function.Func{}
+	for _, record := range readRsp.Records {
+		m := record.AsMap()
+		bs, _ := json.Marshal(m)
+		f := &function.Func{}
+		err = json.Unmarshal(bs, f)
+		if err != nil {
+			return err
+		}
+		rsp.Functions = append(rsp.Functions, f)
+	}
+	return nil
+}

function/image/Dockerfile

@@ -0,0 +1,24 @@
+FROM micro/cells:v3 as builder
+
+RUN apk add curl
+
+# Install python/pip
+ENV PYTHONUNBUFFERED=1
+RUN apk add --update --no-cache python3 && ln -sf python3 /usr/bin/python
+RUN python3 -m ensurepip
+RUN pip3 install --no-cache --upgrade pip setuptools
+
+# https://stackoverflow.com/questions/28372328/how-to-install-the-google-cloud-sdk-in-a-docker-image
+
+# Downloading gcloud package
+RUN curl https://dl.google.com/dl/cloudsdk/release/google-cloud-sdk.tar.gz > /tmp/google-cloud-sdk.tar.gz
+
+# Installing the package
+RUN mkdir -p /usr/local/gcloud \
+  && tar -C /usr/local/gcloud -xvf /tmp/google-cloud-sdk.tar.gz \
+  && /usr/local/gcloud/google-cloud-sdk/install.sh
+
+# Adding the package path to local
+ENV PATH $PATH:/usr/local/gcloud/google-cloud-sdk/bin
+
+

function/main.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	db "github.com/micro/services/db/proto"
+	"github.com/micro/services/function/handler"
+	pb "github.com/micro/services/function/proto"
+
+	"github.com/micro/micro/v3/service"
+	"github.com/micro/micro/v3/service/logger"
+)
+
+func main() {
+	// Create service
+	srv := service.New(
+		service.Name("function"),
+		service.Version("latest"),
+	)
+
+	// Register handler
+	pb.RegisterFunctionHandler(srv.Server(), handler.NewFunction(db.NewDbService("db", srv.Client())))
+
+	// Run service
+	if err := srv.Run(); err != nil {
+		logger.Fatal(err)
+	}
+}

function/micro.mu

@@ -0,0 +1 @@
+service function

function/proto/function.pb.go

@@ -0,0 +1,766 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.26.0
+// 	protoc        v3.6.1
+// source: proto/function.proto
+
+package function
+
+import (
+	_struct "github.com/golang/protobuf/ptypes/struct"
+	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)
+)
+
+// Call a function
+type CallRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Name of the function
+	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	// Request body that will be passed to the function
+	Request *_struct.Struct `protobuf:"bytes,2,opt,name=request,proto3" json:"request,omitempty"`
+}
+
+func (x *CallRequest) Reset() {
+	*x = CallRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_function_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *CallRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*CallRequest) ProtoMessage() {}
+
+func (x *CallRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_function_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 CallRequest.ProtoReflect.Descriptor instead.
+func (*CallRequest) Descriptor() ([]byte, []int) {
+	return file_proto_function_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *CallRequest) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+func (x *CallRequest) GetRequest() *_struct.Struct {
+	if x != nil {
+		return x.Request
+	}
+	return nil
+}
+
+type CallResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Response body that the function returned
+	Response *_struct.Struct `protobuf:"bytes,1,opt,name=response,proto3" json:"response,omitempty"`
+}
+
+func (x *CallResponse) Reset() {
+	*x = CallResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_function_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *CallResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*CallResponse) ProtoMessage() {}
+
+func (x *CallResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_function_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 CallResponse.ProtoReflect.Descriptor instead.
+func (*CallResponse) Descriptor() ([]byte, []int) {
+	return file_proto_function_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *CallResponse) GetResponse() *_struct.Struct {
+	if x != nil {
+		return x.Response
+	}
+	return nil
+}
+
+// Deploy a group of functions
+type DeployRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// github url to repo
+	Repo string `protobuf:"bytes,1,opt,name=repo,proto3" json:"repo,omitempty"`
+	// optional subfolder path
+	Subfolder string `protobuf:"bytes,2,opt,name=subfolder,proto3" json:"subfolder,omitempty"`
+	// function name
+	Name string `protobuf:"bytes,3,opt,name=name,proto3" json:"name,omitempty"`
+	// entry point, ie. handler name in the source code
+	// if not provided, defaults to the name parameter
+	Entrypoint string `protobuf:"bytes,4,opt,name=entrypoint,proto3" json:"entrypoint,omitempty"`
+	// project is used for namespacing your functions
+	// optional. defaults to "default".
+	Project string `protobuf:"bytes,5,opt,name=project,proto3" json:"project,omitempty"`
+}
+
+func (x *DeployRequest) Reset() {
+	*x = DeployRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_function_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DeployRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DeployRequest) ProtoMessage() {}
+
+func (x *DeployRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_function_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 DeployRequest.ProtoReflect.Descriptor instead.
+func (*DeployRequest) Descriptor() ([]byte, []int) {
+	return file_proto_function_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *DeployRequest) GetRepo() string {
+	if x != nil {
+		return x.Repo
+	}
+	return ""
+}
+
+func (x *DeployRequest) GetSubfolder() string {
+	if x != nil {
+		return x.Subfolder
+	}
+	return ""
+}
+
+func (x *DeployRequest) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+func (x *DeployRequest) GetEntrypoint() string {
+	if x != nil {
+		return x.Entrypoint
+	}
+	return ""
+}
+
+func (x *DeployRequest) GetProject() string {
+	if x != nil {
+		return x.Project
+	}
+	return ""
+}
+
+type DeployResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *DeployResponse) Reset() {
+	*x = DeployResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_function_proto_msgTypes[3]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DeployResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DeployResponse) ProtoMessage() {}
+
+func (x *DeployResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_function_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 DeployResponse.ProtoReflect.Descriptor instead.
+func (*DeployResponse) Descriptor() ([]byte, []int) {
+	return file_proto_function_proto_rawDescGZIP(), []int{3}
+}
+
+type ListRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// optional
+	Project string `protobuf:"bytes,1,opt,name=project,proto3" json:"project,omitempty"`
+}
+
+func (x *ListRequest) Reset() {
+	*x = ListRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_function_proto_msgTypes[4]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ListRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ListRequest) ProtoMessage() {}
+
+func (x *ListRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_function_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 ListRequest.ProtoReflect.Descriptor instead.
+func (*ListRequest) Descriptor() ([]byte, []int) {
+	return file_proto_function_proto_rawDescGZIP(), []int{4}
+}
+
+func (x *ListRequest) GetProject() string {
+	if x != nil {
+		return x.Project
+	}
+	return ""
+}
+
+type Func struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Project    string `protobuf:"bytes,1,opt,name=project,proto3" json:"project,omitempty"`
+	Name       string `protobuf:"bytes,2,opt,name=name,proto3" json:"name,omitempty"`
+	Entrypoint string `protobuf:"bytes,3,opt,name=entrypoint,proto3" json:"entrypoint,omitempty"`
+	Repo       string `protobuf:"bytes,4,opt,name=repo,proto3" json:"repo,omitempty"`
+	Subfolder  string `protobuf:"bytes,5,opt,name=subfolder,proto3" json:"subfolder,omitempty"`
+}
+
+func (x *Func) Reset() {
+	*x = Func{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_function_proto_msgTypes[5]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Func) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Func) ProtoMessage() {}
+
+func (x *Func) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_function_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 Func.ProtoReflect.Descriptor instead.
+func (*Func) Descriptor() ([]byte, []int) {
+	return file_proto_function_proto_rawDescGZIP(), []int{5}
+}
+
+func (x *Func) GetProject() string {
+	if x != nil {
+		return x.Project
+	}
+	return ""
+}
+
+func (x *Func) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+func (x *Func) GetEntrypoint() string {
+	if x != nil {
+		return x.Entrypoint
+	}
+	return ""
+}
+
+func (x *Func) GetRepo() string {
+	if x != nil {
+		return x.Repo
+	}
+	return ""
+}
+
+func (x *Func) GetSubfolder() string {
+	if x != nil {
+		return x.Subfolder
+	}
+	return ""
+}
+
+type ListResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Functions []*Func `protobuf:"bytes,1,rep,name=functions,proto3" json:"functions,omitempty"`
+}
+
+func (x *ListResponse) Reset() {
+	*x = ListResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_function_proto_msgTypes[6]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ListResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ListResponse) ProtoMessage() {}
+
+func (x *ListResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_function_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 ListResponse.ProtoReflect.Descriptor instead.
+func (*ListResponse) Descriptor() ([]byte, []int) {
+	return file_proto_function_proto_rawDescGZIP(), []int{6}
+}
+
+func (x *ListResponse) GetFunctions() []*Func {
+	if x != nil {
+		return x.Functions
+	}
+	return nil
+}
+
+type DeleteRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Project string `protobuf:"bytes,1,opt,name=project,proto3" json:"project,omitempty"`
+	Name    string `protobuf:"bytes,2,opt,name=name,proto3" json:"name,omitempty"`
+}
+
+func (x *DeleteRequest) Reset() {
+	*x = DeleteRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_function_proto_msgTypes[7]
+		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_function_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 DeleteRequest.ProtoReflect.Descriptor instead.
+func (*DeleteRequest) Descriptor() ([]byte, []int) {
+	return file_proto_function_proto_rawDescGZIP(), []int{7}
+}
+
+func (x *DeleteRequest) GetProject() string {
+	if x != nil {
+		return x.Project
+	}
+	return ""
+}
+
+func (x *DeleteRequest) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+type DeleteResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *DeleteResponse) Reset() {
+	*x = DeleteResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_function_proto_msgTypes[8]
+		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_function_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 DeleteResponse.ProtoReflect.Descriptor instead.
+func (*DeleteResponse) Descriptor() ([]byte, []int) {
+	return file_proto_function_proto_rawDescGZIP(), []int{8}
+}
+
+var File_proto_function_proto protoreflect.FileDescriptor
+
+var file_proto_function_proto_rawDesc = []byte{
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+	0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_proto_function_proto_rawDescOnce sync.Once
+	file_proto_function_proto_rawDescData = file_proto_function_proto_rawDesc
+)
+
+func file_proto_function_proto_rawDescGZIP() []byte {
+	file_proto_function_proto_rawDescOnce.Do(func() {
+		file_proto_function_proto_rawDescData = protoimpl.X.CompressGZIP(file_proto_function_proto_rawDescData)
+	})
+	return file_proto_function_proto_rawDescData
+}
+
+var file_proto_function_proto_msgTypes = make([]protoimpl.MessageInfo, 9)
+var file_proto_function_proto_goTypes = []interface{}{
+	(*CallRequest)(nil),    // 0: function.CallRequest
+	(*CallResponse)(nil),   // 1: function.CallResponse
+	(*DeployRequest)(nil),  // 2: function.DeployRequest
+	(*DeployResponse)(nil), // 3: function.DeployResponse
+	(*ListRequest)(nil),    // 4: function.ListRequest
+	(*Func)(nil),           // 5: function.Func
+	(*ListResponse)(nil),   // 6: function.ListResponse
+	(*DeleteRequest)(nil),  // 7: function.DeleteRequest
+	(*DeleteResponse)(nil), // 8: function.DeleteResponse
+	(*_struct.Struct)(nil), // 9: google.protobuf.Struct
+}
+var file_proto_function_proto_depIdxs = []int32{
+	9, // 0: function.CallRequest.request:type_name -> google.protobuf.Struct
+	9, // 1: function.CallResponse.response:type_name -> google.protobuf.Struct
+	5, // 2: function.ListResponse.functions:type_name -> function.Func
+	0, // 3: function.Function.Call:input_type -> function.CallRequest
+	2, // 4: function.Function.Deploy:input_type -> function.DeployRequest
+	4, // 5: function.Function.List:input_type -> function.ListRequest
+	7, // 6: function.Function.Delete:input_type -> function.DeleteRequest
+	1, // 7: function.Function.Call:output_type -> function.CallResponse
+	3, // 8: function.Function.Deploy:output_type -> function.DeployResponse
+	6, // 9: function.Function.List:output_type -> function.ListResponse
+	8, // 10: function.Function.Delete:output_type -> function.DeleteResponse
+	7, // [7:11] is the sub-list for method output_type
+	3, // [3:7] is the sub-list for method input_type
+	3, // [3:3] is the sub-list for extension type_name
+	3, // [3:3] is the sub-list for extension extendee
+	0, // [0:3] is the sub-list for field type_name
+}
+
+func init() { file_proto_function_proto_init() }
+func file_proto_function_proto_init() {
+	if File_proto_function_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_proto_function_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*CallRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_proto_function_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*CallResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_proto_function_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DeployRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_proto_function_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DeployResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_proto_function_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ListRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_proto_function_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Func); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_proto_function_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ListResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_proto_function_proto_msgTypes[7].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_function_proto_msgTypes[8].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
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_proto_function_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   9,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_proto_function_proto_goTypes,
+		DependencyIndexes: file_proto_function_proto_depIdxs,
+		MessageInfos:      file_proto_function_proto_msgTypes,
+	}.Build()
+	File_proto_function_proto = out.File
+	file_proto_function_proto_rawDesc = nil
+	file_proto_function_proto_goTypes = nil
+	file_proto_function_proto_depIdxs = nil
+}

function/proto/function.pb.micro.go

@@ -0,0 +1,145 @@
+// Code generated by protoc-gen-micro. DO NOT EDIT.
+// source: proto/function.proto
+
+package function
+
+import (
+	fmt "fmt"
+	proto "github.com/golang/protobuf/proto"
+	_ "github.com/golang/protobuf/ptypes/struct"
+	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 Function service
+
+func NewFunctionEndpoints() []*api.Endpoint {
+	return []*api.Endpoint{}
+}
+
+// Client API for Function service
+
+type FunctionService interface {
+	Call(ctx context.Context, in *CallRequest, opts ...client.CallOption) (*CallResponse, error)
+	Deploy(ctx context.Context, in *DeployRequest, opts ...client.CallOption) (*DeployResponse, error)
+	List(ctx context.Context, in *ListRequest, opts ...client.CallOption) (*ListResponse, error)
+	Delete(ctx context.Context, in *DeleteRequest, opts ...client.CallOption) (*DeleteResponse, error)
+}
+
+type functionService struct {
+	c    client.Client
+	name string
+}
+
+func NewFunctionService(name string, c client.Client) FunctionService {
+	return &functionService{
+		c:    c,
+		name: name,
+	}
+}
+
+func (c *functionService) Call(ctx context.Context, in *CallRequest, opts ...client.CallOption) (*CallResponse, error) {
+	req := c.c.NewRequest(c.name, "Function.Call", in)
+	out := new(CallResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *functionService) Deploy(ctx context.Context, in *DeployRequest, opts ...client.CallOption) (*DeployResponse, error) {
+	req := c.c.NewRequest(c.name, "Function.Deploy", in)
+	out := new(DeployResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *functionService) List(ctx context.Context, in *ListRequest, opts ...client.CallOption) (*ListResponse, error) {
+	req := c.c.NewRequest(c.name, "Function.List", in)
+	out := new(ListResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *functionService) Delete(ctx context.Context, in *DeleteRequest, opts ...client.CallOption) (*DeleteResponse, error) {
+	req := c.c.NewRequest(c.name, "Function.Delete", in)
+	out := new(DeleteResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// Server API for Function service
+
+type FunctionHandler interface {
+	Call(context.Context, *CallRequest, *CallResponse) error
+	Deploy(context.Context, *DeployRequest, *DeployResponse) error
+	List(context.Context, *ListRequest, *ListResponse) error
+	Delete(context.Context, *DeleteRequest, *DeleteResponse) error
+}
+
+func RegisterFunctionHandler(s server.Server, hdlr FunctionHandler, opts ...server.HandlerOption) error {
+	type function interface {
+		Call(ctx context.Context, in *CallRequest, out *CallResponse) error
+		Deploy(ctx context.Context, in *DeployRequest, out *DeployResponse) error
+		List(ctx context.Context, in *ListRequest, out *ListResponse) error
+		Delete(ctx context.Context, in *DeleteRequest, out *DeleteResponse) error
+	}
+	type Function struct {
+		function
+	}
+	h := &functionHandler{hdlr}
+	return s.Handle(s.NewHandler(&Function{h}, opts...))
+}
+
+type functionHandler struct {
+	FunctionHandler
+}
+
+func (h *functionHandler) Call(ctx context.Context, in *CallRequest, out *CallResponse) error {
+	return h.FunctionHandler.Call(ctx, in, out)
+}
+
+func (h *functionHandler) Deploy(ctx context.Context, in *DeployRequest, out *DeployResponse) error {
+	return h.FunctionHandler.Deploy(ctx, in, out)
+}
+
+func (h *functionHandler) List(ctx context.Context, in *ListRequest, out *ListResponse) error {
+	return h.FunctionHandler.List(ctx, in, out)
+}
+
+func (h *functionHandler) Delete(ctx context.Context, in *DeleteRequest, out *DeleteResponse) error {
+	return h.FunctionHandler.Delete(ctx, in, out)
+}

function/proto/function.proto

@@ -0,0 +1,78 @@
+syntax = "proto3";
+import "google/protobuf/struct.proto";	
+
+package function;
+
+option go_package = "./proto;function";
+
+service Function {
+	rpc Call(CallRequest) returns (CallResponse) {}
+	rpc Deploy(DeployRequest) returns (DeployResponse) {}
+	rpc List(ListRequest) returns (ListResponse) {}
+	rpc Delete(DeleteRequest) returns (DeleteResponse) {}
+}
+
+// Call a function
+message CallRequest {
+	// Name of the function
+	string name = 1;
+	// Request body that will be passed to the function
+	google.protobuf.Struct request = 2;
+}
+
+message CallResponse {
+	// Response body that the function returned
+	google.protobuf.Struct response = 1;
+}
+
+// Deploy a group of functions
+message DeployRequest {
+	// github url to repo
+	string repo = 1;
+	// optional subfolder path
+	string subfolder = 2;
+	// function name
+	string name = 3;
+	// entry point, ie. handler name in the source code 
+	// if not provided, defaults to the name parameter
+	string entrypoint = 4;
+	// project is used for namespacing your functions
+	// optional. defaults to "default".
+	string project = 5;
+}
+
+message DeployResponse {
+}
+
+message ListRequest {
+	// optional
+	string project = 1;
+}
+
+message Func {
+	// project of function, optional
+	// defaults to literal "default"
+	// used to namespace functions
+	string project = 1;
+	// function name
+	string name = 2;
+	// name of handler in source code
+	string entrypoint = 3;
+	// git repo address
+	string repo = 4;
+	// subfolder path to entrypoint
+	string subfolder = 5;
+}
+
+message ListResponse {
+	repeated Func functions = 1;
+}
+
+message DeleteRequest {
+	string project = 1;
+	string name = 2;
+}
+
+message DeleteResponse {
+	
+}

function/publicapi.json

@@ -0,0 +1,10 @@
+{
+    "name": "function",
+    "icon": "🔥",
+    "category": "hosting",
+    "pricing": {
+      "Function.Deploy": 1000,
+      "Function.Call": 10
+    }
+  }
+