114 lines
2.5 KiB
Go
114 lines
2.5 KiB
Go
package grpc
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import (
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"context"
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"crypto/tls"
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"github.com/micro/go-micro/broker"
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"github.com/micro/go-micro/codec"
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"github.com/micro/go-micro/registry"
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"github.com/micro/go-micro/server"
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"github.com/micro/go-micro/server/debug"
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"github.com/micro/go-micro/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 tlsAuth struct{}
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type maxMsgSizeKey struct{}
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type grpcOptions 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 := o.Context.Value(codecsKey{}); v != nil {
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codecs = v.(map[string]encoding.Codec)
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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 func(o *server.Options) {
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if o.Context == nil {
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o.Context = context.Background()
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}
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o.Context = context.WithValue(o.Context, tlsAuth{}, t)
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}
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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 func(o *server.Options) {
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if o.Context == nil {
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o.Context = context.Background()
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}
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o.Context = context.WithValue(o.Context, grpcOptions{}, opts)
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}
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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 func(o *server.Options) {
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if o.Context == nil {
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o.Context = context.Background()
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}
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o.Context = context.WithValue(o.Context, maxMsgSizeKey{}, s)
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}
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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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}
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for _, o := range opt {
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o(&opts)
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}
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if opts.Broker == nil {
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opts.Broker = broker.DefaultBroker
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}
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if opts.Registry == nil {
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opts.Registry = registry.DefaultRegistry
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}
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if opts.Transport == nil {
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opts.Transport = transport.DefaultTransport
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}
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if opts.DebugHandler == nil {
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opts.DebugHandler = debug.DefaultHandler
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}
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if len(opts.Address) == 0 {
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opts.Address = server.DefaultAddress
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}
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if len(opts.Name) == 0 {
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opts.Name = server.DefaultName
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}
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if len(opts.Id) == 0 {
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opts.Id = server.DefaultId
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}
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if len(opts.Version) == 0 {
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opts.Version = server.DefaultVersion
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}
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return opts
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}
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