micro/config/cmd/cmd.go

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// Package cmd is an interface for parsing the command line
package cmd
import (
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"fmt"
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"math/rand"
"strings"
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"time"
"github.com/micro/go-micro/v2/auth"
"github.com/micro/go-micro/v2/auth/provider"
"github.com/micro/go-micro/v2/broker"
"github.com/micro/go-micro/v2/client"
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"github.com/micro/go-micro/v2/client/grpc"
"github.com/micro/go-micro/v2/client/selector"
"github.com/micro/go-micro/v2/config"
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configSrc "github.com/micro/go-micro/v2/config/source"
configSrv "github.com/micro/go-micro/v2/config/source/service"
"github.com/micro/go-micro/v2/debug/profile"
"github.com/micro/go-micro/v2/debug/profile/http"
"github.com/micro/go-micro/v2/debug/profile/pprof"
"github.com/micro/go-micro/v2/debug/trace"
"github.com/micro/go-micro/v2/logger"
"github.com/micro/go-micro/v2/registry"
registrySrv "github.com/micro/go-micro/v2/registry/service"
"github.com/micro/go-micro/v2/runtime"
"github.com/micro/go-micro/v2/server"
"github.com/micro/go-micro/v2/store"
"github.com/micro/go-micro/v2/transport"
authutil "github.com/micro/go-micro/v2/util/auth"
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"github.com/micro/go-micro/v2/util/wrapper"
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// clients
cgrpc "github.com/micro/go-micro/v2/client/grpc"
cmucp "github.com/micro/go-micro/v2/client/mucp"
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// servers
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"github.com/micro/cli/v2"
sgrpc "github.com/micro/go-micro/v2/server/grpc"
smucp "github.com/micro/go-micro/v2/server/mucp"
// brokers
brokerHttp "github.com/micro/go-micro/v2/broker/http"
"github.com/micro/go-micro/v2/broker/memory"
"github.com/micro/go-micro/v2/broker/nats"
brokerSrv "github.com/micro/go-micro/v2/broker/service"
// registries
"github.com/micro/go-micro/v2/registry/etcd"
"github.com/micro/go-micro/v2/registry/mdns"
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"
"github.com/micro/go-micro/v2/client/selector/static"
// transports
thttp "github.com/micro/go-micro/v2/transport/http"
tmem "github.com/micro/go-micro/v2/transport/memory"
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// stores
memStore "github.com/micro/go-micro/v2/store/memory"
svcStore "github.com/micro/go-micro/v2/store/service"
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// tracers
// jTracer "github.com/micro/go-micro/v2/debug/trace/jaeger"
memTracer "github.com/micro/go-micro/v2/debug/trace/memory"
// auth
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jwtAuth "github.com/micro/go-micro/v2/auth/jwt"
svcAuth "github.com/micro/go-micro/v2/auth/service"
// auth providers
"github.com/micro/go-micro/v2/auth/provider/basic"
"github.com/micro/go-micro/v2/auth/provider/oauth"
)
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type Cmd interface {
// The cli app within this cmd
App() *cli.App
// Adds options, parses flags and initialise
// exits on error
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Init(opts ...Option) error
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// Options set within this command
Options() Options
}
type cmd struct {
opts Options
app *cli.App
}
type Option func(o *Options)
var (
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DefaultCmd = newCmd()
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DefaultFlags = []cli.Flag{
&cli.StringFlag{
Name: "client",
EnvVars: []string{"MICRO_CLIENT"},
Usage: "Client for go-micro; rpc",
},
&cli.StringFlag{
Name: "client_request_timeout",
EnvVars: []string{"MICRO_CLIENT_REQUEST_TIMEOUT"},
Usage: "Sets the client request timeout. e.g 500ms, 5s, 1m. Default: 5s",
},
&cli.IntFlag{
Name: "client_retries",
EnvVars: []string{"MICRO_CLIENT_RETRIES"},
Value: client.DefaultRetries,
Usage: "Sets the client retries. Default: 1",
},
&cli.IntFlag{
Name: "client_pool_size",
EnvVars: []string{"MICRO_CLIENT_POOL_SIZE"},
Usage: "Sets the client connection pool size. Default: 1",
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},
&cli.StringFlag{
Name: "client_pool_ttl",
EnvVars: []string{"MICRO_CLIENT_POOL_TTL"},
Usage: "Sets the client connection pool ttl. e.g 500ms, 5s, 1m. Default: 1m",
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},
&cli.IntFlag{
Name: "register_ttl",
EnvVars: []string{"MICRO_REGISTER_TTL"},
Value: 60,
Usage: "Register TTL in seconds",
},
&cli.IntFlag{
Name: "register_interval",
EnvVars: []string{"MICRO_REGISTER_INTERVAL"},
Value: 30,
Usage: "Register interval in seconds",
},
&cli.StringFlag{
Name: "server",
EnvVars: []string{"MICRO_SERVER"},
Usage: "Server for go-micro; rpc",
},
&cli.StringFlag{
Name: "server_name",
EnvVars: []string{"MICRO_SERVER_NAME"},
Usage: "Name of the server. go.micro.srv.example",
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},
&cli.StringFlag{
Name: "server_version",
EnvVars: []string{"MICRO_SERVER_VERSION"},
Usage: "Version of the server. 1.1.0",
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},
&cli.StringFlag{
Name: "server_id",
EnvVars: []string{"MICRO_SERVER_ID"},
Usage: "Id of the server. Auto-generated if not specified",
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},
&cli.StringFlag{
Name: "server_address",
EnvVars: []string{"MICRO_SERVER_ADDRESS"},
Usage: "Bind address for the server. 127.0.0.1:8080",
},
&cli.StringFlag{
Name: "server_advertise",
EnvVars: []string{"MICRO_SERVER_ADVERTISE"},
Usage: "Used instead of the server_address when registering with discovery. 127.0.0.1:8080",
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},
&cli.StringSliceFlag{
Name: "server_metadata",
EnvVars: []string{"MICRO_SERVER_METADATA"},
Value: &cli.StringSlice{},
Usage: "A list of key-value pairs defining metadata. version=1.0.0",
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},
&cli.StringFlag{
Name: "broker",
EnvVars: []string{"MICRO_BROKER"},
Usage: "Broker for pub/sub. http, nats, rabbitmq",
},
&cli.StringFlag{
Name: "broker_address",
EnvVars: []string{"MICRO_BROKER_ADDRESS"},
Usage: "Comma-separated list of broker addresses",
},
&cli.StringFlag{
Name: "profile",
Usage: "Debug profiler for cpu and memory stats",
EnvVars: []string{"MICRO_DEBUG_PROFILE"},
},
&cli.StringFlag{
Name: "registry",
EnvVars: []string{"MICRO_REGISTRY"},
Usage: "Registry for discovery. etcd, mdns",
},
&cli.StringFlag{
Name: "registry_address",
EnvVars: []string{"MICRO_REGISTRY_ADDRESS"},
Usage: "Comma-separated list of registry addresses",
},
&cli.StringFlag{
Name: "runtime",
Usage: "Runtime for building and running services e.g local, kubernetes",
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"},
Usage: "Selector used to pick nodes for querying",
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},
&cli.StringFlag{
Name: "store",
EnvVars: []string{"MICRO_STORE"},
Usage: "Store used for key-value storage",
},
&cli.StringFlag{
Name: "store_address",
EnvVars: []string{"MICRO_STORE_ADDRESS"},
Usage: "Comma-separated list of store addresses",
},
&cli.StringFlag{
Name: "store_database",
EnvVars: []string{"MICRO_STORE_DATABASE"},
Usage: "Database option for the underlying store",
},
&cli.StringFlag{
Name: "store_table",
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EnvVars: []string{"MICRO_STORE_TABLE"},
Usage: "Table option for the underlying store",
},
&cli.StringFlag{
Name: "transport",
EnvVars: []string{"MICRO_TRANSPORT"},
Usage: "Transport mechanism used; http",
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},
&cli.StringFlag{
Name: "transport_address",
EnvVars: []string{"MICRO_TRANSPORT_ADDRESS"},
Usage: "Comma-separated list of transport addresses",
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},
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&cli.StringFlag{
Name: "tracer",
EnvVars: []string{"MICRO_TRACER"},
Usage: "Tracer for distributed tracing, e.g. memory, jaeger",
},
&cli.StringFlag{
Name: "tracer_address",
EnvVars: []string{"MICRO_TRACER_ADDRESS"},
Usage: "Comma-separated list of tracer addresses",
},
&cli.StringFlag{
Name: "auth",
EnvVars: []string{"MICRO_AUTH"},
Usage: "Auth for role based access control, e.g. service",
},
&cli.StringFlag{
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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",
},
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&cli.StringFlag{
Name: "auth_namespace",
EnvVars: []string{"MICRO_AUTH_NAMESPACE"},
Usage: "Namespace for the services auth account",
Value: "go.micro",
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},
&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: "auth_provider",
EnvVars: []string{"MICRO_AUTH_PROVIDER"},
Usage: "Auth provider used to login user",
},
&cli.StringFlag{
Name: "auth_provider_client_id",
EnvVars: []string{"MICRO_AUTH_PROVIDER_CLIENT_ID"},
Usage: "The client id to be used for oauth",
},
&cli.StringFlag{
Name: "auth_provider_client_secret",
EnvVars: []string{"MICRO_AUTH_PROVIDER_CLIENT_SECRET"},
Usage: "The client secret to be used for oauth",
},
&cli.StringFlag{
Name: "auth_provider_endpoint",
EnvVars: []string{"MICRO_AUTH_PROVIDER_ENDPOINT"},
Usage: "The enpoint to be used for oauth",
},
&cli.StringFlag{
Name: "auth_provider_redirect",
EnvVars: []string{"MICRO_AUTH_PROVIDER_REDIRECT"},
Usage: "The redirect to be used for oauth",
},
&cli.StringFlag{
Name: "auth_provider_scope",
EnvVars: []string{"MICRO_AUTH_PROVIDER_SCOPE"},
Usage: "The scope to be used for oauth",
},
&cli.StringFlag{
Name: "config",
EnvVars: []string{"MICRO_CONFIG"},
Usage: "The source of the config to be used to get configuration",
},
}
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DefaultBrokers = map[string]func(...broker.Option) broker.Broker{
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"service": brokerSrv.NewBroker,
"memory": memory.NewBroker,
"nats": nats.NewBroker,
"http": brokerHttp.NewBroker,
}
DefaultClients = map[string]func(...client.Option) client.Client{
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"mucp": cmucp.NewClient,
"grpc": cgrpc.NewClient,
}
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DefaultRegistries = map[string]func(...registry.Option) registry.Registry{
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"service": regSrv.NewRegistry,
"etcd": etcd.NewRegistry,
"mdns": mdns.NewRegistry,
"memory": rmem.NewRegistry,
}
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DefaultSelectors = map[string]func(...selector.Option) selector.Selector{
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"dns": dns.NewSelector,
"router": router.NewSelector,
"static": static.NewSelector,
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}
DefaultServers = map[string]func(...server.Option) server.Server{
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"mucp": smucp.NewServer,
"grpc": sgrpc.NewServer,
}
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DefaultTransports = map[string]func(...transport.Option) transport.Transport{
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"memory": tmem.NewTransport,
"http": thttp.NewTransport,
}
DefaultRuntimes = map[string]func(...runtime.Option) runtime.Runtime{
"local": lRuntime.NewRuntime,
"service": srvRuntime.NewRuntime,
"kubernetes": kRuntime.NewRuntime,
}
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DefaultStores = map[string]func(...store.Option) store.Store{
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"memory": memStore.NewStore,
"service": svcStore.NewStore,
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}
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DefaultTracers = map[string]func(...trace.Option) trace.Tracer{
"memory": memTracer.NewTracer,
// "jaeger": jTracer.NewTracer,
}
DefaultAuths = map[string]func(...auth.Option) auth.Auth{
"service": svcAuth.NewAuth,
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"jwt": jwtAuth.NewAuth,
}
DefaultAuthProviders = map[string]func(...provider.Option) provider.Provider{
"oauth": oauth.NewProvider,
"basic": basic.NewProvider,
}
DefaultProfiles = map[string]func(...profile.Option) profile.Profile{
"http": http.NewProfile,
"pprof": pprof.NewProfile,
}
DefaultConfigs = map[string]func(...config.Option) (config.Config, error){
"service": config.NewConfig,
}
)
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func init() {
rand.Seed(time.Now().Unix())
}
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func newCmd(opts ...Option) Cmd {
options := Options{
Auth: &auth.DefaultAuth,
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Broker: &broker.DefaultBroker,
Client: &client.DefaultClient,
Registry: &registry.DefaultRegistry,
Server: &server.DefaultServer,
Selector: &selector.DefaultSelector,
Transport: &transport.DefaultTransport,
Runtime: &runtime.DefaultRuntime,
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Store: &store.DefaultStore,
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Tracer: &trace.DefaultTracer,
Profile: &profile.DefaultProfile,
Config: &config.DefaultConfig,
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Brokers: DefaultBrokers,
Clients: DefaultClients,
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Registries: DefaultRegistries,
Selectors: DefaultSelectors,
Servers: DefaultServers,
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Transports: DefaultTransports,
Runtimes: DefaultRuntimes,
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Stores: DefaultStores,
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Tracers: DefaultTracers,
Auths: DefaultAuths,
Profiles: DefaultProfiles,
Configs: DefaultConfigs,
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}
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for _, o := range opts {
o(&options)
}
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if len(options.Description) == 0 {
options.Description = "a go-micro service"
}
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cmd := new(cmd)
cmd.opts = options
cmd.app = cli.NewApp()
cmd.app.Name = cmd.opts.Name
cmd.app.Version = cmd.opts.Version
cmd.app.Usage = cmd.opts.Description
cmd.app.Before = cmd.Before
cmd.app.Flags = DefaultFlags
cmd.app.Action = func(c *cli.Context) error {
return nil
}
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if len(options.Version) == 0 {
cmd.app.HideVersion = true
}
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return cmd
}
func (c *cmd) App() *cli.App {
return c.app
}
func (c *cmd) Options() Options {
return c.opts
}
func (c *cmd) Before(ctx *cli.Context) error {
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// If flags are set then use them otherwise do nothing
var serverOpts []server.Option
var clientOpts []client.Option
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// setup a client to use when calling the runtime. It is important the auth client is wrapped
// after the cache client since the wrappers are applied in reverse order and the cache will use
// some of the headers set by the auth client.
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authFn := func() auth.Auth { return *c.opts.Auth }
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cacheFn := func() *client.Cache { return (*c.opts.Client).Options().Cache }
microClient := wrapper.CacheClient(cacheFn, grpc.NewClient())
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microClient = wrapper.AuthClient(authFn, microClient)
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// Set the store
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if name := ctx.String("store"); len(name) > 0 {
s, ok := c.opts.Stores[name]
if !ok {
return fmt.Errorf("Unsupported store: %s", name)
}
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*c.opts.Store = s(store.WithClient(microClient))
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}
// Set the runtime
if name := ctx.String("runtime"); len(name) > 0 {
r, ok := c.opts.Runtimes[name]
if !ok {
return fmt.Errorf("Unsupported runtime: %s", name)
}
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*c.opts.Runtime = r(runtime.WithClient(microClient))
}
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// Set the tracer
if name := ctx.String("tracer"); len(name) > 0 {
r, ok := c.opts.Tracers[name]
if !ok {
return fmt.Errorf("Unsupported tracer: %s", name)
}
*c.opts.Tracer = r()
}
// Set the client
if name := ctx.String("client"); len(name) > 0 {
// only change if we have the client and type differs
if cl, ok := c.opts.Clients[name]; ok && (*c.opts.Client).String() != name {
*c.opts.Client = cl()
}
}
// Set the server
if name := ctx.String("server"); len(name) > 0 {
// only change if we have the server and type differs
if s, ok := c.opts.Servers[name]; ok && (*c.opts.Server).String() != name {
*c.opts.Server = s()
}
}
// Setup auth
authOpts := []auth.Option{auth.WithClient(microClient)}
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"),
))
}
if len(ctx.String("auth_public_key")) > 0 {
authOpts = append(authOpts, auth.PublicKey(ctx.String("auth_public_key")))
}
if len(ctx.String("auth_private_key")) > 0 {
authOpts = append(authOpts, auth.PrivateKey(ctx.String("auth_private_key")))
}
if len(ctx.String("auth_namespace")) > 0 {
authOpts = append(authOpts, auth.Namespace(ctx.String("auth_namespace")))
}
if name := ctx.String("auth_provider"); len(name) > 0 {
p, ok := DefaultAuthProviders[name]
if !ok {
return fmt.Errorf("AuthProvider %s not found", name)
}
var provOpts []provider.Option
clientID := ctx.String("auth_provider_client_id")
clientSecret := ctx.String("auth_provider_client_secret")
if len(clientID) > 0 || len(clientSecret) > 0 {
provOpts = append(provOpts, provider.Credentials(clientID, clientSecret))
}
if e := ctx.String("auth_provider_endpoint"); len(e) > 0 {
provOpts = append(provOpts, provider.Endpoint(e))
}
if r := ctx.String("auth_provider_redirect"); len(r) > 0 {
provOpts = append(provOpts, provider.Redirect(r))
}
if s := ctx.String("auth_provider_scope"); len(s) > 0 {
provOpts = append(provOpts, provider.Scope(s))
}
authOpts = append(authOpts, auth.Provider(p(provOpts...)))
}
// Set the auth
if name := ctx.String("auth"); len(name) > 0 {
a, ok := c.opts.Auths[name]
if !ok {
return fmt.Errorf("Unsupported auth: %s", name)
}
*c.opts.Auth = a(authOpts...)
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serverOpts = append(serverOpts, server.Auth(*c.opts.Auth))
} else {
(*c.opts.Auth).Init(authOpts...)
}
// Set the registry
if name := ctx.String("registry"); len(name) > 0 && (*c.opts.Registry).String() != name {
r, ok := c.opts.Registries[name]
if !ok {
return fmt.Errorf("Registry %s not found", name)
}
*c.opts.Registry = r(registrySrv.WithClient(microClient))
serverOpts = append(serverOpts, server.Registry(*c.opts.Registry))
clientOpts = append(clientOpts, client.Registry(*c.opts.Registry))
if err := (*c.opts.Selector).Init(selector.Registry(*c.opts.Registry)); err != nil {
logger.Fatalf("Error configuring registry: %v", err)
}
clientOpts = append(clientOpts, client.Selector(*c.opts.Selector))
if err := (*c.opts.Broker).Init(broker.Registry(*c.opts.Registry)); err != nil {
logger.Fatalf("Error configuring broker: %v", err)
}
}
// generate the services auth account
serverID := (*c.opts.Server).Options().Id
if err := authutil.Generate(serverID, c.App().Name, (*c.opts.Auth)); err != nil {
return err
}
// Set the profile
if name := ctx.String("profile"); len(name) > 0 {
p, ok := c.opts.Profiles[name]
if !ok {
return fmt.Errorf("Unsupported profile: %s", name)
}
*c.opts.Profile = p()
}
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// Set the broker
if name := ctx.String("broker"); len(name) > 0 && (*c.opts.Broker).String() != name {
b, ok := c.opts.Brokers[name]
if !ok {
return fmt.Errorf("Broker %s not found", name)
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}
*c.opts.Broker = b()
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serverOpts = append(serverOpts, server.Broker(*c.opts.Broker))
clientOpts = append(clientOpts, client.Broker(*c.opts.Broker))
}
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// Set the selector
if name := ctx.String("selector"); len(name) > 0 && (*c.opts.Selector).String() != name {
s, ok := c.opts.Selectors[name]
if !ok {
return fmt.Errorf("Selector %s not found", name)
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}
*c.opts.Selector = s(selector.Registry(*c.opts.Registry))
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// No server option here. Should there be?
clientOpts = append(clientOpts, client.Selector(*c.opts.Selector))
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}
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// Set the transport
if name := ctx.String("transport"); len(name) > 0 && (*c.opts.Transport).String() != name {
t, ok := c.opts.Transports[name]
if !ok {
return fmt.Errorf("Transport %s not found", name)
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}
*c.opts.Transport = t()
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serverOpts = append(serverOpts, server.Transport(*c.opts.Transport))
clientOpts = append(clientOpts, client.Transport(*c.opts.Transport))
}
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// Parse the server options
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metadata := make(map[string]string)
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for _, d := range ctx.StringSlice("server_metadata") {
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var key, val string
parts := strings.Split(d, "=")
key = parts[0]
if len(parts) > 1 {
val = strings.Join(parts[1:], "=")
}
metadata[key] = val
}
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if len(metadata) > 0 {
serverOpts = append(serverOpts, server.Metadata(metadata))
}
if len(ctx.String("broker_address")) > 0 {
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if err := (*c.opts.Broker).Init(broker.Addrs(strings.Split(ctx.String("broker_address"), ",")...)); err != nil {
logger.Fatalf("Error configuring broker: %v", err)
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}
}
if len(ctx.String("registry_address")) > 0 {
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if err := (*c.opts.Registry).Init(registry.Addrs(strings.Split(ctx.String("registry_address"), ",")...)); err != nil {
logger.Fatalf("Error configuring registry: %v", err)
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}
}
if len(ctx.String("transport_address")) > 0 {
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if err := (*c.opts.Transport).Init(transport.Addrs(strings.Split(ctx.String("transport_address"), ",")...)); err != nil {
logger.Fatalf("Error configuring transport: %v", err)
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}
}
if len(ctx.String("store_address")) > 0 {
if err := (*c.opts.Store).Init(store.Nodes(strings.Split(ctx.String("store_address"), ",")...)); err != nil {
logger.Fatalf("Error configuring store: %v", err)
}
}
if len(ctx.String("store_database")) > 0 {
if err := (*c.opts.Store).Init(store.Database(ctx.String("store_database"))); err != nil {
logger.Fatalf("Error configuring store database option: %v", err)
}
}
if len(ctx.String("store_table")) > 0 {
if err := (*c.opts.Store).Init(store.Table(ctx.String("store_table"))); err != nil {
logger.Fatalf("Error configuring store table option: %v", err)
}
}
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if len(ctx.String("server_name")) > 0 {
serverOpts = append(serverOpts, server.Name(ctx.String("server_name")))
}
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if len(ctx.String("server_version")) > 0 {
serverOpts = append(serverOpts, server.Version(ctx.String("server_version")))
}
if len(ctx.String("server_id")) > 0 {
serverOpts = append(serverOpts, server.Id(ctx.String("server_id")))
}
if len(ctx.String("server_address")) > 0 {
serverOpts = append(serverOpts, server.Address(ctx.String("server_address")))
}
if len(ctx.String("server_advertise")) > 0 {
serverOpts = append(serverOpts, server.Advertise(ctx.String("server_advertise")))
}
if ttl := time.Duration(ctx.Int("register_ttl")); ttl >= 0 {
serverOpts = append(serverOpts, server.RegisterTTL(ttl*time.Second))
}
if val := time.Duration(ctx.Int("register_interval")); val >= 0 {
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serverOpts = append(serverOpts, server.RegisterInterval(val*time.Second))
}
if len(ctx.String("runtime_source")) > 0 {
if err := (*c.opts.Runtime).Init(runtime.WithSource(ctx.String("runtime_source"))); err != nil {
logger.Fatalf("Error configuring runtime: %v", err)
}
}
if ctx.String("config") == "service" {
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opt := config.WithSource(configSrv.NewSource(configSrc.WithClient(microClient)))
if err := (*c.opts.Config).Init(opt); err != nil {
logger.Fatalf("Error configuring config: %v", err)
}
}
// client opts
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if r := ctx.Int("client_retries"); r >= 0 {
clientOpts = append(clientOpts, client.Retries(r))
}
if t := ctx.String("client_request_timeout"); len(t) > 0 {
d, err := time.ParseDuration(t)
if err != nil {
return fmt.Errorf("failed to parse client_request_timeout: %v", t)
}
clientOpts = append(clientOpts, client.RequestTimeout(d))
}
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if r := ctx.Int("client_pool_size"); r > 0 {
clientOpts = append(clientOpts, client.PoolSize(r))
}
if t := ctx.String("client_pool_ttl"); len(t) > 0 {
d, err := time.ParseDuration(t)
if err != nil {
return fmt.Errorf("failed to parse client_pool_ttl: %v", t)
}
clientOpts = append(clientOpts, client.PoolTTL(d))
}
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// We have some command line opts for the server.
// Lets set it up
if len(serverOpts) > 0 {
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if err := (*c.opts.Server).Init(serverOpts...); err != nil {
logger.Fatalf("Error configuring server: %v", err)
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}
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}
// Use an init option?
if len(clientOpts) > 0 {
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if err := (*c.opts.Client).Init(clientOpts...); err != nil {
logger.Fatalf("Error configuring client: %v", err)
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}
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}
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return nil
}
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func (c *cmd) Init(opts ...Option) error {
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for _, o := range opts {
o(&c.opts)
}
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if len(c.opts.Name) > 0 {
c.app.Name = c.opts.Name
}
if len(c.opts.Version) > 0 {
c.app.Version = c.opts.Version
}
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c.app.HideVersion = len(c.opts.Version) == 0
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c.app.Usage = c.opts.Description
c.app.RunAndExitOnError()
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return nil
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}
func DefaultOptions() Options {
return DefaultCmd.Options()
}
func App() *cli.App {
return DefaultCmd.App()
}
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func Init(opts ...Option) error {
return DefaultCmd.Init(opts...)
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}
func NewCmd(opts ...Option) Cmd {
return newCmd(opts...)
}