mirror of
https://github.com/go-micro/go-micro.git
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309 lines
7.0 KiB
Go
309 lines
7.0 KiB
Go
package micro
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import (
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"context"
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"time"
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"github.com/micro/cli/v2"
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"github.com/micro/go-micro/v2/auth"
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"github.com/micro/go-micro/v2/broker"
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"github.com/micro/go-micro/v2/client"
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"github.com/micro/go-micro/v2/client/selector"
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"github.com/micro/go-micro/v2/config"
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"github.com/micro/go-micro/v2/config/cmd"
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"github.com/micro/go-micro/v2/debug/profile"
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"github.com/micro/go-micro/v2/debug/trace"
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"github.com/micro/go-micro/v2/registry"
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"github.com/micro/go-micro/v2/server"
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"github.com/micro/go-micro/v2/transport"
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)
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// Options for micro service
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type Options struct {
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Auth auth.Auth
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Broker broker.Broker
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Cmd cmd.Cmd
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Config config.Config
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Client client.Client
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Server server.Server
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Registry registry.Registry
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Transport transport.Transport
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Profile profile.Profile
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// Before and After funcs
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BeforeStart []func() error
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BeforeStop []func() error
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AfterStart []func() error
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AfterStop []func() error
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// Other options for implementations of the interface
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// can be stored in a context
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Context context.Context
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Signal bool
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}
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func newOptions(opts ...Option) Options {
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opt := Options{
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Auth: auth.DefaultAuth,
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Broker: broker.DefaultBroker,
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Cmd: cmd.DefaultCmd,
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Config: config.DefaultConfig,
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Client: client.DefaultClient,
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Server: server.DefaultServer,
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Registry: registry.DefaultRegistry,
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Transport: transport.DefaultTransport,
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Context: context.Background(),
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Signal: true,
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}
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for _, o := range opts {
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o(&opt)
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}
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return opt
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}
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// Broker to be used for service
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func Broker(b broker.Broker) Option {
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return func(o *Options) {
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o.Broker = b
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// Update Client and Server
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o.Client.Init(client.Broker(b))
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o.Server.Init(server.Broker(b))
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}
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}
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func Cmd(c cmd.Cmd) Option {
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return func(o *Options) {
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o.Cmd = c
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}
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}
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// Client to be used for service
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func Client(c client.Client) Option {
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return func(o *Options) {
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o.Client = c
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}
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}
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// Context specifies a context for the service.
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// Can be used to signal shutdown of the service and for extra option values.
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func Context(ctx context.Context) Option {
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return func(o *Options) {
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o.Context = ctx
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}
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}
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// HandleSignal toggles automatic installation of the signal handler that
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// traps TERM, INT, and QUIT. Users of this feature to disable the signal
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// handler, should control liveness of the service through the context.
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func HandleSignal(b bool) Option {
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return func(o *Options) {
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o.Signal = b
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}
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}
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// Profile to be used for debug profile
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func Profile(p profile.Profile) Option {
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return func(o *Options) {
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o.Profile = p
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}
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}
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// Server to be used for service
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func Server(s server.Server) Option {
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return func(o *Options) {
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o.Server = s
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}
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}
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// Registry sets the registry for the service
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// and the underlying components
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func Registry(r registry.Registry) Option {
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return func(o *Options) {
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o.Registry = r
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// Update Client and Server
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o.Client.Init(client.Registry(r))
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o.Server.Init(server.Registry(r))
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// Update Broker
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o.Broker.Init(broker.Registry(r))
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}
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}
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// Tracer sets the tracer for the service
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func Tracer(t trace.Tracer) Option {
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return func(o *Options) {
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o.Server.Init(server.Tracer(t))
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}
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}
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// Auth sets the auth for the service
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func Auth(a auth.Auth) Option {
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return func(o *Options) {
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o.Auth = a
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o.Client.Init(client.Auth(a))
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o.Server.Init(server.Auth(a))
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}
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}
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// Config sets the config for the service
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func Config(c config.Config) Option {
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return func(o *Options) {
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o.Config = c
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}
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}
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// Selector sets the selector for the service client
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func Selector(s selector.Selector) Option {
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return func(o *Options) {
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o.Client.Init(client.Selector(s))
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}
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}
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// Transport sets the transport for the service
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// and the underlying components
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func Transport(t transport.Transport) Option {
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return func(o *Options) {
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o.Transport = t
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// Update Client and Server
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o.Client.Init(client.Transport(t))
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o.Server.Init(server.Transport(t))
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}
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}
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// Convenience options
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// Address sets the address of the server
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func Address(addr string) Option {
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return func(o *Options) {
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o.Server.Init(server.Address(addr))
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}
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}
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// Name of the service
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func Name(n string) Option {
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return func(o *Options) {
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o.Server.Init(server.Name(n))
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}
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}
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// Version of the service
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func Version(v string) Option {
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return func(o *Options) {
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o.Server.Init(server.Version(v))
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}
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}
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// Metadata associated with the service
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func Metadata(md map[string]string) Option {
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return func(o *Options) {
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o.Server.Init(server.Metadata(md))
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}
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}
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// Flags that can be passed to service
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func Flags(flags ...cli.Flag) Option {
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return func(o *Options) {
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o.Cmd.App().Flags = append(o.Cmd.App().Flags, flags...)
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}
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}
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// Action can be used to parse user provided cli options
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func Action(a func(*cli.Context) error) Option {
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return func(o *Options) {
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o.Cmd.App().Action = a
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}
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}
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// RegisterTTL specifies the TTL to use when registering the service
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func RegisterTTL(t time.Duration) Option {
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return func(o *Options) {
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o.Server.Init(server.RegisterTTL(t))
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}
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}
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// RegisterInterval specifies the interval on which to re-register
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func RegisterInterval(t time.Duration) Option {
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return func(o *Options) {
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o.Server.Init(server.RegisterInterval(t))
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}
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}
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// WrapClient is a convenience method for wrapping a Client with
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// some middleware component. A list of wrappers can be provided.
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// Wrappers are applied in reverse order so the last is executed first.
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func WrapClient(w ...client.Wrapper) Option {
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return func(o *Options) {
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// apply in reverse
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for i := len(w); i > 0; i-- {
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o.Client = w[i-1](o.Client)
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}
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}
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}
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// WrapCall is a convenience method for wrapping a Client CallFunc
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func WrapCall(w ...client.CallWrapper) Option {
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return func(o *Options) {
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o.Client.Init(client.WrapCall(w...))
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}
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}
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// WrapHandler adds a handler Wrapper to a list of options passed into the server
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func WrapHandler(w ...server.HandlerWrapper) Option {
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return func(o *Options) {
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var wrappers []server.Option
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for _, wrap := range w {
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wrappers = append(wrappers, server.WrapHandler(wrap))
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}
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// Init once
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o.Server.Init(wrappers...)
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}
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}
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// WrapSubscriber adds a subscriber Wrapper to a list of options passed into the server
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func WrapSubscriber(w ...server.SubscriberWrapper) Option {
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return func(o *Options) {
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var wrappers []server.Option
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for _, wrap := range w {
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wrappers = append(wrappers, server.WrapSubscriber(wrap))
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}
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// Init once
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o.Server.Init(wrappers...)
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}
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}
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// Before and Afters
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// BeforeStart run funcs before service starts
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func BeforeStart(fn func() error) Option {
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return func(o *Options) {
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o.BeforeStart = append(o.BeforeStart, fn)
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}
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}
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// BeforeStop run funcs before service stops
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func BeforeStop(fn func() error) Option {
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return func(o *Options) {
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o.BeforeStop = append(o.BeforeStop, fn)
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}
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}
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// AfterStart run funcs after service starts
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func AfterStart(fn func() error) Option {
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return func(o *Options) {
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o.AfterStart = append(o.AfterStart, fn)
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}
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}
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// AfterStop run funcs after service stops
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func AfterStop(fn func() error) Option {
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return func(o *Options) {
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o.AfterStop = append(o.AfterStop, fn)
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}
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}
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