102 lines
2.5 KiB
Go
102 lines
2.5 KiB
Go
// Package grpc provides a gRPC options
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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/client"
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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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var (
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// DefaultMaxRecvMsgSize maximum message that client can receive
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// (4 MB).
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DefaultMaxRecvMsgSize = 1024 * 1024 * 4
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// DefaultMaxSendMsgSize maximum message that client can send
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// (4 MB).
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DefaultMaxSendMsgSize = 1024 * 1024 * 4
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)
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type codecsKey struct{}
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type tlsAuth struct{}
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type maxRecvMsgSizeKey struct{}
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type maxSendMsgSizeKey struct{}
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type grpcDialOptions struct{}
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type grpcCallOptions 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) client.Option {
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return func(o *client.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) client.Option {
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return func(o *client.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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//
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// MaxRecvMsgSize set the maximum size of message that client can receive.
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//
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func MaxRecvMsgSize(s int) client.Option {
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return func(o *client.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, maxRecvMsgSizeKey{}, s)
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}
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}
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//
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// MaxSendMsgSize set the maximum size of message that client can send.
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//
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func MaxSendMsgSize(s int) client.Option {
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return func(o *client.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, maxSendMsgSizeKey{}, s)
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}
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}
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//
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// DialOptions to be used to configure gRPC dial options
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//
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func DialOptions(opts ...grpc.DialOption) client.Option {
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return func(o *client.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, grpcDialOptions{}, opts)
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}
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}
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//
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// CallOptions to be used to configure gRPC call options
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//
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func CallOptions(opts ...grpc.CallOption) client.Option {
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return func(o *client.Options) {
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if o.CallOptions.Context == nil {
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o.CallOptions.Context = context.Background()
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}
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o.CallOptions.Context = context.WithValue(o.CallOptions.Context, grpcCallOptions{}, opts)
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}
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}
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