1
0
Fork 0
mirror of https://github.com/sourcegraph/jsonrpc2.git synced 2026-06-16 20:20:03 +02:00
jsonrpc2/call_opt.go
Sam Herrmann ae88a5e7c0
Always omit params member from request when empty (#67)
With this commit, the JSON encoding of `Request` always omits the params
member when calling `Conn.Call`, `Conn.DispatchCall`, or `Conn.Notify`
with the `params` argument set to `nil`. This change also removes the
`OmitNilParams` call option that was added in commit 8012d496 (#62).

As of this commit, if users desire to send a JSON-RPC request with a
`params` value of `null`, then they may do so by explicitly setting the
`params` argument of `Conn.Call`/`Conn.DispatchCall`/`Conn.Notify` to
`json.RawMessage("null")`.
2023-02-22 10:53:44 +02:00

48 lines
1.4 KiB
Go

package jsonrpc2
// CallOption is an option that can be provided to (*Conn).Call to
// configure custom behavior. See Meta.
type CallOption interface {
apply(r *Request) error
}
type callOptionFunc func(r *Request) error
func (c callOptionFunc) apply(r *Request) error { return c(r) }
// Meta returns a call option which attaches the given meta object to
// the JSON-RPC 2.0 request (this is a Sourcegraph extension to JSON
// RPC 2.0 for carrying metadata).
func Meta(meta interface{}) CallOption {
return callOptionFunc(func(r *Request) error {
return r.SetMeta(meta)
})
}
// ExtraField returns a call option which attaches the given name/value pair to
// the JSON-RPC 2.0 request. This can be used to add arbitrary extensions to
// JSON RPC 2.0.
func ExtraField(name string, value interface{}) CallOption {
return callOptionFunc(func(r *Request) error {
return r.SetExtraField(name, value)
})
}
// PickID returns a call option which sets the ID on a request. Care must be
// taken to ensure there are no conflicts with any previously picked ID, nor
// with the default sequence ID.
func PickID(id ID) CallOption {
return callOptionFunc(func(r *Request) error {
r.ID = id
return nil
})
}
// StringID returns a call option that instructs the request ID to be set as a
// string.
func StringID() CallOption {
return callOptionFunc(func(r *Request) error {
r.ID.IsString = true
return nil
})
}