88 lines
2.4 KiB
Go
88 lines
2.4 KiB
Go
package grpc
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import (
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"context"
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"crypto/tls"
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"net"
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"github.com/micro/go-micro/v3/broker/http"
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"github.com/micro/go-micro/v3/codec"
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"github.com/micro/go-micro/v3/registry/mdns"
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"github.com/micro/go-micro/v3/server"
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"github.com/micro/go-micro/v3/transport"
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"google.golang.org/grpc"
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"google.golang.org/grpc/encoding"
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)
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type codecsKey struct{}
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type grpcOptions struct{}
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type netListener struct{}
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type maxMsgSizeKey struct{}
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type maxConnKey struct{}
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type tlsAuth struct{}
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// gRPC Codec to be used to encode/decode requests for a given content type
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func Codec(contentType string, c encoding.Codec) server.Option {
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return func(o *server.Options) {
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codecs := make(map[string]encoding.Codec)
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if o.Context == nil {
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o.Context = context.Background()
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}
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if v, ok := o.Context.Value(codecsKey{}).(map[string]encoding.Codec); ok && v != nil {
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codecs = v
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}
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codecs[contentType] = c
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o.Context = context.WithValue(o.Context, codecsKey{}, codecs)
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}
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}
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// AuthTLS should be used to setup a secure authentication using TLS
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func AuthTLS(t *tls.Config) server.Option {
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return setServerOption(tlsAuth{}, t)
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}
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// MaxConn specifies maximum number of max simultaneous connections to server
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func MaxConn(n int) server.Option {
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return setServerOption(maxConnKey{}, n)
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}
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// Listener specifies the net.Listener to use instead of the default
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func Listener(l net.Listener) server.Option {
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return setServerOption(netListener{}, l)
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}
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// Options to be used to configure gRPC options
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func Options(opts ...grpc.ServerOption) server.Option {
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return setServerOption(grpcOptions{}, opts)
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}
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//
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// MaxMsgSize set the maximum message in bytes the server can receive and
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// send. Default maximum message size is 4 MB.
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//
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func MaxMsgSize(s int) server.Option {
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return setServerOption(maxMsgSizeKey{}, s)
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}
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func newOptions(opt ...server.Option) server.Options {
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opts := server.Options{
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Codecs: make(map[string]codec.NewCodec),
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Metadata: map[string]string{},
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Broker: http.NewBroker(),
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Registry: mdns.NewRegistry(),
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Transport: transport.DefaultTransport,
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Address: server.DefaultAddress,
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Name: server.DefaultName,
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Id: server.DefaultId,
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Version: server.DefaultVersion,
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RegisterInterval: server.DefaultRegisterInterval,
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RegisterTTL: server.DefaultRegisterTTL,
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}
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for _, o := range opt {
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o(&opts)
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}
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return opts
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}
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