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cmd.go
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cmd.go
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package cmd
import (
"crypto/tls"
"crypto/x509"
"fmt"
"io/ioutil"
"math/rand"
"os"
"os/exec"
"runtime/debug"
"sort"
"strings"
"time"
"github.com/micro/micro/v3/client/cli/util"
uconf "github.com/micro/micro/v3/internal/config"
"github.com/micro/micro/v3/internal/helper"
"github.com/micro/micro/v3/internal/network"
"github.com/micro/micro/v3/internal/report"
_ "github.com/micro/micro/v3/internal/usage"
"github.com/micro/micro/v3/internal/user"
"github.com/micro/micro/v3/internal/wrapper"
"github.com/micro/micro/v3/plugin"
"github.com/micro/micro/v3/profile"
"github.com/micro/micro/v3/service/auth"
"github.com/micro/micro/v3/service/broker"
"github.com/micro/micro/v3/service/client"
"github.com/micro/micro/v3/service/config"
configCli "github.com/micro/micro/v3/service/config/client"
storeConf "github.com/micro/micro/v3/service/config/store"
"github.com/micro/micro/v3/service/logger"
"github.com/micro/micro/v3/service/registry"
"github.com/micro/micro/v3/service/server"
"github.com/micro/micro/v3/service/store"
"github.com/urfave/cli/v2"
muregistry "github.com/micro/micro/v3/service/registry"
muruntime "github.com/micro/micro/v3/service/runtime"
mustore "github.com/micro/micro/v3/service/store"
)
type Cmd interface {
// Init initialises options
// Note: Use Run to parse command line
Init(opts ...Option) error
// Options set within this command
Options() Options
// The cli app within this cmd
App() *cli.App
// Run executes the command
Run() error
// Implementation
String() string
}
type command struct {
opts Options
app *cli.App
// before is a function which should
// be called in Before if not nil
before cli.ActionFunc
// indicates whether this is a service
service bool
}
var (
DefaultCmd Cmd = New()
// name of the binary
name = "micro"
// description of the binary
description = "A framework for cloud native development\n\n Use `micro [command] --help` to see command specific help."
// defaultFlags which are used on all commands
defaultFlags = []cli.Flag{
&cli.StringFlag{
Name: "c",
Usage: "Set the config file: Defaults to ~/.micro/config.json",
EnvVars: []string{"MICRO_CONFIG_FILE"},
},
&cli.StringFlag{
Name: "env",
Aliases: []string{"e"},
Usage: "Set the environment to operate in",
EnvVars: []string{"MICRO_ENV"},
},
&cli.StringFlag{
Name: "profile",
Usage: "Set the micro server profile: e.g. local or kubernetes",
EnvVars: []string{"MICRO_PROFILE"},
},
&cli.StringFlag{
Name: "namespace",
EnvVars: []string{"MICRO_NAMESPACE"},
Usage: "Namespace the service is operating in",
Value: "micro",
},
&cli.StringFlag{
Name: "auth_address",
EnvVars: []string{"MICRO_AUTH_ADDRESS"},
Usage: "Comma-separated list of auth addresses",
},
&cli.StringFlag{
Name: "auth_id",
EnvVars: []string{"MICRO_AUTH_ID"},
Usage: "Account ID used for client authentication",
},
&cli.StringFlag{
Name: "auth_secret",
EnvVars: []string{"MICRO_AUTH_SECRET"},
Usage: "Account secret used for client authentication",
},
&cli.StringFlag{
Name: "auth_public_key",
EnvVars: []string{"MICRO_AUTH_PUBLIC_KEY"},
Usage: "Public key for JWT auth (base64 encoded PEM)",
},
&cli.StringFlag{
Name: "auth_private_key",
EnvVars: []string{"MICRO_AUTH_PRIVATE_KEY"},
Usage: "Private key for JWT auth (base64 encoded PEM)",
},
&cli.StringFlag{
Name: "registry_address",
EnvVars: []string{"MICRO_REGISTRY_ADDRESS"},
Usage: "Comma-separated list of registry addresses",
},
&cli.StringFlag{
Name: "registry_tls_ca",
Usage: "Certificate authority for TLS with registry",
EnvVars: []string{"MICRO_REGISTRY_TLS_CA"},
},
&cli.StringFlag{
Name: "registry_tls_cert",
Usage: "Client cert for TLS with registry",
EnvVars: []string{"MICRO_REGISTRY_TLS_CERT"},
},
&cli.StringFlag{
Name: "registry_tls_key",
Usage: "Client key for TLS with registry",
EnvVars: []string{"MICRO_REGISTRY_TLS_KEY"},
},
&cli.StringFlag{
Name: "broker_address",
EnvVars: []string{"MICRO_BROKER_ADDRESS"},
Usage: "Comma-separated list of broker addresses",
},
&cli.StringFlag{
Name: "events_tls_ca",
Usage: "Certificate authority for TLS with events",
EnvVars: []string{"MICRO_EVENTS_TLS_CA"},
},
&cli.StringFlag{
Name: "events_tls_cert",
Usage: "Client cert for TLS with events",
EnvVars: []string{"MICRO_EVENTS_TLS_CERT"},
},
&cli.StringFlag{
Name: "events_tls_key",
Usage: "Client key for TLS with events",
EnvVars: []string{"MICRO_EVENTS_TLS_KEY"},
},
&cli.StringFlag{
Name: "broker_tls_ca",
Usage: "Certificate authority for TLS with broker",
EnvVars: []string{"MICRO_BROKER_TLS_CA"},
},
&cli.StringFlag{
Name: "broker_tls_cert",
Usage: "Client cert for TLS with broker",
EnvVars: []string{"MICRO_BROKER_TLS_CERT"},
},
&cli.StringFlag{
Name: "broker_tls_key",
Usage: "Client key for TLS with broker",
EnvVars: []string{"MICRO_BROKER_TLS_KEY"},
},
&cli.StringFlag{
Name: "store_address",
EnvVars: []string{"MICRO_STORE_ADDRESS"},
Usage: "Comma-separated list of store addresses",
},
&cli.StringFlag{
Name: "proxy_address",
Usage: "Proxy requests via the HTTP address specified",
EnvVars: []string{"MICRO_PROXY"},
},
&cli.BoolFlag{
Name: "report_usage",
Usage: "Report usage statistics",
EnvVars: []string{"MICRO_REPORT_USAGE"},
Value: true,
},
&cli.StringFlag{
Name: "service_name",
Usage: "Name of the micro service",
EnvVars: []string{"MICRO_SERVICE_NAME"},
},
&cli.StringFlag{
Name: "service_version",
Usage: "Version of the micro service",
EnvVars: []string{"MICRO_SERVICE_VERSION"},
},
&cli.StringFlag{
Name: "service_address",
Usage: "Address to run the service on",
EnvVars: []string{"MICRO_SERVICE_ADDRESS"},
},
&cli.BoolFlag{
Name: "prompt_update",
Usage: "Provide an update prompt when a new binary is available. Enabled for release binaries only.",
Value: true,
EnvVars: []string{"MICRO_PROMPT_UPDATE"},
},
&cli.StringFlag{
Name: "config_secret_key",
Usage: "Key to use when encoding/decoding secret config values. Will be generated and saved to file if not provided.",
Value: "",
EnvVars: []string{"MICRO_CONFIG_SECRET_KEY"},
},
}
)
func init() {
rand.Seed(time.Now().Unix())
// configure defaults for all packages
setupDefaults()
}
func action(c *cli.Context) error {
if c.Args().Len() > 0 {
// if an executable is available with the name of
// the command, execute it with the arguments from
// index 1 on.
v, err := exec.LookPath("micro-" + c.Args().First())
if err == nil {
ce := exec.Command(v, c.Args().Slice()[1:]...)
ce.Stdout = os.Stdout
ce.Stderr = os.Stderr
return ce.Run()
}
// lookup the service, e.g. "micro config set" would
// firstly check to see if the service, e.g. config
// exists within the current namespace, then it would
// execute the Config.Set RPC, setting the flags in the
// request.
if srv, ns, err := lookupService(c); err != nil {
fmt.Printf("Error querying registry for service %v: %v", c.Args().First(), err)
os.Exit(1)
} else if srv != nil && shouldRenderHelp(c) {
fmt.Println(formatServiceUsage(srv, c))
os.Exit(1)
} else if srv != nil {
if err := callService(srv, ns, c); err != nil {
fmt.Println(err)
os.Exit(1)
}
os.Exit(0)
}
}
return helper.MissingCommand(c)
}
func New(opts ...Option) *command {
options := Options{}
for _, o := range opts {
o(&options)
}
cmd := new(command)
cmd.opts = options
cmd.app = cli.NewApp()
cmd.app.Name = name
cmd.app.Version = buildVersion()
cmd.app.Usage = description
cmd.app.Flags = defaultFlags
cmd.app.Action = action
cmd.app.Before = beforeFromContext(options.Context, cmd.Before)
// if this option has been set, we're running a service
// and no action needs to be performed. The CMD package
// is just being used to parse flags and configure micro.
if setupOnlyFromContext(options.Context) {
cmd.service = true
cmd.app.Action = func(ctx *cli.Context) error { return nil }
}
return cmd
}
func (c *command) App() *cli.App {
return c.app
}
func (c *command) Options() Options {
return c.opts
}
// Before is executed before any subcommand
func (c *command) Before(ctx *cli.Context) error {
if v := ctx.Args().First(); len(v) > 0 {
switch v {
case "service", "server":
// do nothing
default:
// check for the latest release
// TODO: write a local file to detect
// when we last checked so we don't do it often
updated, err := confirmAndSelfUpdate(ctx)
if err != nil {
return err
}
// if updated we expect to re-execute the command
// TODO: maybe require relogin or update of the
// config...
if updated {
// considering nil actually continues
// we need to os.Exit(0)
os.Exit(0)
return nil
}
}
}
// set the config file if specified
if cf := ctx.String("c"); len(cf) > 0 {
uconf.SetConfig(cf)
}
// initialize plugins
for _, p := range plugin.Plugins() {
if err := p.Init(ctx); err != nil {
return err
}
}
// default the profile for the server
prof := ctx.String("profile")
// if no profile is set then set one
if len(prof) == 0 {
switch ctx.Args().First() {
case "service", "server":
prof = "local"
default:
prof = "client"
}
}
// apply the profile
if profile, err := profile.Load(prof); err != nil {
logger.Fatal(err)
} else {
// load the profile
profile.Setup(ctx)
}
// set the proxy address
var proxy string
if c.service || ctx.IsSet("proxy_address") {
// use the proxy address passed as a flag, this is normally
// the micro network
proxy = ctx.String("proxy_address")
} else {
// for CLI, use the external proxy which is loaded from the
// local config
var err error
proxy, err = util.CLIProxyAddress(ctx)
if err != nil {
return err
}
}
if len(proxy) > 0 {
client.DefaultClient.Init(client.Proxy(proxy))
}
// use the internal network lookup
client.DefaultClient.Init(
client.Lookup(network.Lookup),
)
// wrap the client
client.DefaultClient = wrapper.AuthClient(client.DefaultClient)
client.DefaultClient = wrapper.CacheClient(client.DefaultClient)
client.DefaultClient = wrapper.TraceCall(client.DefaultClient)
client.DefaultClient = wrapper.FromService(client.DefaultClient)
client.DefaultClient = wrapper.LogClient(client.DefaultClient)
// wrap the server
server.DefaultServer.Init(
server.WrapHandler(wrapper.AuthHandler()),
server.WrapHandler(wrapper.TraceHandler()),
server.WrapHandler(wrapper.HandlerStats()),
server.WrapHandler(wrapper.LogHandler()),
server.WrapHandler(wrapper.MetricsHandler()),
)
// setup auth
authOpts := []auth.Option{}
if len(ctx.String("namespace")) > 0 {
authOpts = append(authOpts, auth.Issuer(ctx.String("namespace")))
}
if len(ctx.String("auth_address")) > 0 {
authOpts = append(authOpts, auth.Addrs(ctx.String("auth_address")))
}
if len(ctx.String("auth_id")) > 0 || len(ctx.String("auth_secret")) > 0 {
authOpts = append(authOpts, auth.Credentials(
ctx.String("auth_id"), ctx.String("auth_secret"),
))
}
// load the jwt private and public keys, in the case of the server we want to generate them if not
// present. The server will inject these creds into the core services, if the services generated
// the credentials themselves then they wouldn't match
if len(ctx.String("auth_public_key")) > 0 || len(ctx.String("auth_private_key")) > 0 {
authOpts = append(authOpts, auth.PublicKey(ctx.String("auth_public_key")))
authOpts = append(authOpts, auth.PrivateKey(ctx.String("auth_private_key")))
} else if ctx.Args().First() == "server" {
privKey, pubKey, err := user.GetJWTCerts()
if err != nil {
logger.Fatalf("Error getting keys: %v", err)
}
authOpts = append(authOpts, auth.PublicKey(string(pubKey)), auth.PrivateKey(string(privKey)))
}
auth.DefaultAuth.Init(authOpts...)
// setup auth credentials, use local credentials for the CLI and injected creds
// for the service.
var err error
if c.service {
err = setupAuthForService()
} else {
err = setupAuthForCLI(ctx)
}
if err != nil {
logger.Fatalf("Error setting up auth: %v", err)
}
go refreshAuthToken()
// initialize the server with the namespace so it knows which domain to register in
server.DefaultServer.Init(server.Namespace(ctx.String("namespace")))
// setup registry
registryOpts := []registry.Option{}
// Parse registry TLS certs
if len(ctx.String("registry_tls_cert")) > 0 || len(ctx.String("registry_tls_key")) > 0 {
cert, err := tls.LoadX509KeyPair(ctx.String("registry_tls_cert"), ctx.String("registry_tls_key"))
if err != nil {
logger.Fatalf("Error loading registry tls cert: %v", err)
}
// load custom certificate authority
caCertPool := x509.NewCertPool()
if len(ctx.String("registry_tls_ca")) > 0 {
crt, err := ioutil.ReadFile(ctx.String("registry_tls_ca"))
if err != nil {
logger.Fatalf("Error loading registry tls certificate authority: %v", err)
}
caCertPool.AppendCertsFromPEM(crt)
}
cfg := &tls.Config{Certificates: []tls.Certificate{cert}, RootCAs: caCertPool}
registryOpts = append(registryOpts, registry.TLSConfig(cfg))
}
if len(ctx.String("registry_address")) > 0 {
addresses := strings.Split(ctx.String("registry_address"), ",")
registryOpts = append(registryOpts, registry.Addrs(addresses...))
}
if err := muregistry.DefaultRegistry.Init(registryOpts...); err != nil {
logger.Fatalf("Error configuring registry: %v", err)
}
// Setup broker options.
brokerOpts := []broker.Option{}
if len(ctx.String("broker_address")) > 0 {
brokerOpts = append(brokerOpts, broker.Addrs(ctx.String("broker_address")))
}
// Parse broker TLS certs
if len(ctx.String("broker_tls_cert")) > 0 || len(ctx.String("broker_tls_key")) > 0 {
cert, err := tls.LoadX509KeyPair(ctx.String("broker_tls_cert"), ctx.String("broker_tls_key"))
if err != nil {
logger.Fatalf("Error loading broker TLS cert: %v", err)
}
// load custom certificate authority
caCertPool := x509.NewCertPool()
if len(ctx.String("broker_tls_ca")) > 0 {
crt, err := ioutil.ReadFile(ctx.String("broker_tls_ca"))
if err != nil {
logger.Fatalf("Error loading broker TLS certificate authority: %v", err)
}
caCertPool.AppendCertsFromPEM(crt)
}
cfg := &tls.Config{Certificates: []tls.Certificate{cert}, RootCAs: caCertPool}
brokerOpts = append(brokerOpts, broker.TLSConfig(cfg))
}
if err := broker.DefaultBroker.Init(brokerOpts...); err != nil {
logger.Fatalf("Error configuring broker: %v", err)
}
// Setup runtime. This is a temporary fix to trigger the runtime to recreate
// its client now the client has been replaced with a wrapped one.
if err := muruntime.DefaultRuntime.Init(); err != nil {
logger.Fatalf("Error configuring runtime: %v", err)
}
// Setup store options
storeOpts := []store.StoreOption{}
if len(ctx.String("store_address")) > 0 {
storeOpts = append(storeOpts, store.Nodes(strings.Split(ctx.String("store_address"), ",")...))
}
if len(ctx.String("namespace")) > 0 {
storeOpts = append(storeOpts, store.Database(ctx.String("namespace")))
}
if len(ctx.String("service_name")) > 0 {
storeOpts = append(storeOpts, store.Table(ctx.String("service_name")))
}
if err := mustore.DefaultStore.Init(storeOpts...); err != nil {
logger.Fatalf("Error configuring store: %v", err)
}
// set the registry and broker in the client and server
client.DefaultClient.Init(
client.Broker(broker.DefaultBroker),
client.Registry(muregistry.DefaultRegistry),
)
server.DefaultServer.Init(
server.Broker(broker.DefaultBroker),
server.Registry(muregistry.DefaultRegistry),
)
// Setup config. Do this after auth is configured since it'll load the config
// from the service immediately. We only do this if the action is nil, indicating
// a service is being run
if c.service && config.DefaultConfig == nil {
config.DefaultConfig = configCli.NewConfig(ctx.String("namespace"))
} else if config.DefaultConfig == nil {
config.DefaultConfig, _ = storeConf.NewConfig(mustore.DefaultStore, ctx.String("namespace"))
}
return nil
}
func (c *command) Init(opts ...Option) error {
for _, o := range opts {
o(&c.opts)
}
if len(c.opts.Name) > 0 {
c.app.Name = c.opts.Name
}
if len(c.opts.Version) > 0 {
c.app.Version = c.opts.Version
}
c.app.HideVersion = len(c.opts.Version) == 0
c.app.Usage = c.opts.Description
return nil
}
func (c *command) Run() error {
defer func() {
if r := recover(); r != nil {
report.Errorf(nil, fmt.Sprintf("panic: %v", string(debug.Stack())))
panic(r)
}
}()
return c.app.Run(os.Args)
}
func (c *command) String() string {
return "micro"
}
// Register CLI commands
func Register(cmds ...*cli.Command) {
app := DefaultCmd.App()
app.Commands = append(app.Commands, cmds...)
// sort the commands so they're listed in order on the cli
// todo: move this to micro/cli so it's only run when the
// commands are printed during "help"
sort.Slice(app.Commands, func(i, j int) bool {
return app.Commands[i].Name < app.Commands[j].Name
})
}
// Run the default command
func Run() {
if err := DefaultCmd.Run(); err != nil {
fmt.Println(formatErr(err))
os.Exit(1)
}
}