func (i *invoker) Prepare(ctx *context.T, method string, numArgs int) (argptrs []interface{}, tags []*vdl.Value, err error) {
env, freeFunc := jutil.GetEnv()
jContext, err := jcontext.JavaContext(env, ctx, nil)
if err != nil {
freeFunc()
return nil, nil, err
}
// Have all input arguments be decoded into *vdl.Value.
argptrs = make([]interface{}, numArgs)
for i := 0; i < numArgs; i++ {
value := new(vdl.Value)
argptrs[i] = &value
}
// This method will invoke the freeFunc().
jVomTags, err := jutil.CallStaticFutureMethod(env, freeFunc, jServerRPCHelperClass, "prepare", []jutil.Sign{invokerSign, contextSign, jutil.StringSign}, i.jInvoker, jContext, jutil.CamelCase(method))
if err != nil {
return nil, nil, err
}
env, freeFunc = jutil.GetEnv()
defer freeFunc()
defer jutil.DeleteGlobalRef(env, jVomTags)
vomTags, err := jutil.GoByteArrayArray(env, jVomTags)
if err != nil {
return nil, nil, err
}
tags = make([]*vdl.Value, len(vomTags))
for i, vomTag := range vomTags {
var err error
if tags[i], err = jutil.VomDecodeToValue(vomTag); err != nil {
return nil, nil, err
}
}
return
}
//export Java_io_v_impl_google_rpc_StreamImpl_nativeSend
func Java_io_v_impl_google_rpc_StreamImpl_nativeSend(jenv *C.JNIEnv, jStream C.jobject, goRef C.jlong, jVomItem C.jbyteArray, jCallbackObj C.jobject) {
env := jutil.Env(uintptr(unsafe.Pointer(jenv)))
jCallback := jutil.Object(uintptr(unsafe.Pointer(jCallbackObj)))
vomItem := jutil.GoByteArray(env, jutil.Object(uintptr(unsafe.Pointer(jVomItem))))
jutil.DoAsyncCall(env, jCallback, func() (jutil.Object, error) {
item, err := jutil.VomDecodeToValue(vomItem)
if err != nil {
return jutil.NullObject, err
}
return jutil.NullObject, (*(*rpc.Stream)(jutil.GoRefValue(jutil.Ref(goRef)))).Send(item)
})
}
func decodeArgs(env jutil.Env, jVomArgs C.jobjectArray) ([]interface{}, error) {
vomArgs, err := jutil.GoByteArrayArray(env, jutil.Object(uintptr(unsafe.Pointer(jVomArgs))))
if err != nil {
return nil, err
}
// VOM-decode each arguments into a *vdl.Value.
args := make([]interface{}, len(vomArgs))
for i := 0; i < len(vomArgs); i++ {
var err error
if args[i], err = jutil.VomDecodeToValue(vomArgs[i]); err != nil {
return nil, err
}
}
return args, nil
}
func (i *invoker) Invoke(ctx *context.T, call rpc.StreamServerCall, method string, argptrs []interface{}) (results []interface{}, err error) {
env, freeFunc := jutil.GetEnv()
jContext, err := jcontext.JavaContext(env, ctx, nil)
if err != nil {
freeFunc()
return nil, err
}
jStreamServerCall, err := javaStreamServerCall(env, jContext, call)
if err != nil {
freeFunc()
return nil, err
}
vomArgs := make([][]byte, len(argptrs))
for i, argptr := range argptrs {
arg := interface{}(jutil.DerefOrDie(argptr))
var err error
if vomArgs[i], err = vom.Encode(arg); err != nil {
freeFunc()
return nil, err
}
}
// This method will invoke the freeFunc().
jResult, err := jutil.CallStaticFutureMethod(env, freeFunc, jServerRPCHelperClass, "invoke", []jutil.Sign{invokerSign, contextSign, streamServerCallSign, jutil.StringSign, jutil.ArraySign(jutil.ArraySign(jutil.ByteSign))}, i.jInvoker, jContext, jStreamServerCall, jutil.CamelCase(method), vomArgs)
if err != nil {
return nil, err
}
env, freeFunc = jutil.GetEnv()
defer freeFunc()
defer jutil.DeleteGlobalRef(env, jResult)
vomResults, err := jutil.GoByteArrayArray(env, jResult)
if err != nil {
return nil, err
}
results = make([]interface{}, len(vomResults))
for i, vomResult := range vomResults {
var err error
if results[i], err = jutil.VomDecodeToValue(vomResult); err != nil {
return nil, err
}
}
return results, nil
}