Runtime (#1160)

* Add String to Runtime interface

* Setup Dynamic Runtime Configuration

config/cmd/cmd.go

@@ -40,6 +40,11 @@ import (
 	rmem "github.com/micro/go-micro/v2/registry/memory"
 	regSrv "github.com/micro/go-micro/v2/registry/service"
 
+	// runtimes
+	kRuntime "github.com/micro/go-micro/v2/runtime/kubernetes"
+	lRuntime "github.com/micro/go-micro/v2/runtime/local"
+	srvRuntime "github.com/micro/go-micro/v2/runtime/service"
+
 	// selectors
 	"github.com/micro/go-micro/v2/client/selector/dns"
 	"github.com/micro/go-micro/v2/client/selector/router"
@@ -188,6 +193,12 @@ var (
 			EnvVars: []string{"MICRO_RUNTIME"},
 			Value:   "local",
 		},
+		&cli.StringFlag{
+			Name:    "runtime_source",
+			Usage:   "Runtime source for building and running services e.g github.com/micro/service",
+			EnvVars: []string{"MICRO_RUNTIME_SOURCE"},
+			Value:   "github.com/micro/services",
+		},
 		&cli.StringFlag{
 			Name:    "selector",
 			EnvVars: []string{"MICRO_SELECTOR"},
@@ -281,7 +292,9 @@ var (
 	}
 
 	DefaultRuntimes = map[string]func(...runtime.Option) runtime.Runtime{
-		"local": runtime.NewRuntime,
+		"local":      lRuntime.NewRuntime,
+		"service":    srvRuntime.NewRuntime,
+		"kubernetes": kRuntime.NewRuntime,
 	}
 
 	DefaultStores = map[string]func(...store.Option) store.Store{
@@ -580,6 +593,12 @@ func (c *cmd) Before(ctx *cli.Context) error {
 		}
 	}
 
+	if len(ctx.String("runtime_source")) > 0 {
+		if err := (*c.opts.Runtime).Init(runtime.WithSource(ctx.String("runtime_source"))); err != nil {
+			log.Fatalf("Error configuring runtime: %v", err)
+		}
+	}
+
 	// client opts
 	if r := ctx.Int("client_retries"); r >= 0 {
 		clientOpts = append(clientOpts, client.Retries(r))

runtime/kubernetes/kubernetes.go

@@ -2,7 +2,9 @@
 package kubernetes
 
 import (
+	"errors"
 	"fmt"
+	"strings"
 	"sync"
 	"time"
 
@@ -245,6 +247,10 @@ func (k *kubernetes) Init(opts ...runtime.Option) error {
 		o(&k.options)
 	}
 
+	if strings.HasPrefix(k.options.Source, "github.com") {
+		return errors.New("invalid source provided to kubernetes runtime, expected docker image")
+	}
+
 	return nil
 }
 

runtime/local/local.go

@@ -0,0 +1,11 @@
+// Package local provides a local runtime
+package local
+
+import (
+	"github.com/micro/go-micro/v2/runtime"
+)
+
+// NewRuntime returns a new local runtime
+func NewRuntime(opts ...runtime.Option) runtime.Runtime {
+	return runtime.NewRuntime(opts...)
+}

runtime/options.go

@@ -12,6 +12,15 @@ type Options struct {
 	Scheduler Scheduler
 	// Service type to manage
 	Type string
+	// Source of the services repository
+	Source string
+}
+
+// WithSource sets the host addresses to be used by the broker
+func WithSource(src string) Option {
+	return func(o *Options) {
+		o.Source = src
+	}
 }
 
 // WithScheduler specifies a scheduler for updates

runtime/runtime.go

@@ -17,6 +17,8 @@ var (
 
 // Runtime is a service runtime manager
 type Runtime interface {
+	// String describes runtime
+	String() string
 	// Init initializes runtime
 	Init(...Option) error
 	// Create registers a service

runtime/service.go

@@ -170,6 +170,8 @@ func (s *service) Wait() {
 		s.Metadata["status"] = "error"
 		s.Metadata["error"] = err.Error()
 		s.err = err
+	} else {
+		s.Metadata["status"] = "done"
 	}
 
 	// no longer running