54 lines
1.1 KiB
Go
54 lines
1.1 KiB
Go
|
package server
|
||
|
|
||
|
import (
|
||
|
"go.arsenm.dev/lrpc/codec"
|
||
|
|
||
|
"github.com/gofrs/uuid"
|
||
|
)
|
||
|
|
||
|
// Context is a connection context for RPC calls
|
||
|
type Context struct {
|
||
|
isChannel bool
|
||
|
channelID string
|
||
|
channel chan any
|
||
|
|
||
|
codec codec.Codec
|
||
|
|
||
|
doneCh chan struct{}
|
||
|
}
|
||
|
|
||
|
// MakeChannel changes the function it's called in into a
|
||
|
// channel function, and returns a channel which can be used
|
||
|
// to send information to the client.
|
||
|
//
|
||
|
// This will ovewrite any return value of the function with
|
||
|
// a channel ID.
|
||
|
func (ctx *Context) MakeChannel() (chan<- any, error) {
|
||
|
ctx.isChannel = true
|
||
|
chID, err := uuid.NewV4()
|
||
|
ctx.channelID = chID.String()
|
||
|
ctx.channel = make(chan any, 5)
|
||
|
return ctx.channel, err
|
||
|
}
|
||
|
|
||
|
// GetCodec returns a codec bound to the connection
|
||
|
// that called this function
|
||
|
func (ctx *Context) GetCodec() codec.Codec {
|
||
|
return ctx.codec
|
||
|
}
|
||
|
|
||
|
// Done returns a channel that will be closed when
|
||
|
// the context is canceled, such as when ChannelDone
|
||
|
// is called by the client
|
||
|
func (ctx *Context) Done() <-chan struct{} {
|
||
|
return ctx.doneCh
|
||
|
}
|
||
|
|
||
|
// Cancel cancels the context
|
||
|
func (ctx *Context) Cancel() {
|
||
|
close(ctx.doneCh)
|
||
|
if ctx.channel != nil {
|
||
|
close(ctx.channel)
|
||
|
}
|
||
|
}
|