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package amqp
import (
"fmt"
"github.com/Azure/go-amqp/internal/encoding"
"github.com/Azure/go-amqp/internal/fake"
"github.com/Azure/go-amqp/internal/frames"
"github.com/stretchr/testify/require"
)
func newResponse(b []byte, err error) (fake.Response, error) {
if err != nil {
return fake.Response{}, err
}
return fake.Response{Payload: b}, nil
}
func sendInitialFlowFrame(t require.TestingT, channel uint16, netConn *fake.NetConn, handle uint32, credit uint32) {
nextIncoming := uint32(0)
count := uint32(0)
available := uint32(0)
b, err := fake.EncodeFrame(frames.TypeAMQP, 0, &frames.PerformFlow{
NextIncomingID: &nextIncoming,
IncomingWindow: 1000000,
OutgoingWindow: 1000000,
NextOutgoingID: nextIncoming + 1,
Handle: &handle,
DeliveryCount: &count,
LinkCredit: &credit,
Available: &available,
})
require.NoError(t, err)
netConn.SendFrame(b)
}
// standard frame handler for connecting/disconnecting etc.
// returns zero-value, nil for unhandled frames.
func senderFrameHandler(channel uint16, ssm encoding.SenderSettleMode) func(uint16, frames.FrameBody) (fake.Response, error) {
return func(remoteChannel uint16, req frames.FrameBody) (fake.Response, error) {
switch tt := req.(type) {
case *fake.AMQPProto:
return newResponse(fake.ProtoHeader(fake.ProtoAMQP))
case *frames.PerformOpen:
return newResponse(fake.PerformOpen("container"))
case *frames.PerformClose:
return newResponse(fake.PerformClose(nil))
case *frames.PerformBegin:
return newResponse(fake.PerformBegin(channel, remoteChannel))
case *frames.PerformEnd:
return newResponse(fake.PerformEnd(channel, nil))
case *frames.PerformAttach:
return newResponse(fake.SenderAttach(channel, tt.Name, 0, ssm))
case *frames.PerformDetach:
return newResponse(fake.PerformDetach(channel, 0, nil))
default:
return fake.Response{}, nil
}
}
}
// similar to senderFrameHandler but returns an error on unhandled frames
func senderFrameHandlerNoUnhandled(channel uint16, ssm encoding.SenderSettleMode) func(uint16, frames.FrameBody) (fake.Response, error) {
return func(remoteChannel uint16, req frames.FrameBody) (fake.Response, error) {
resp, err := senderFrameHandler(channel, ssm)(remoteChannel, req)
if resp.Payload == nil && err == nil {
return fake.Response{}, fmt.Errorf("unhandled frame %T", req)
}
return resp, err
}
}
// standard frame handler for connecting/disconnecting etc.
// returns zero-value, nil for unhandled frames.
func receiverFrameHandler(channel uint16, rsm encoding.ReceiverSettleMode) func(uint16, frames.FrameBody) (fake.Response, error) {
return func(remoteChannel uint16, req frames.FrameBody) (fake.Response, error) {
switch tt := req.(type) {
case *fake.AMQPProto:
return newResponse(fake.ProtoHeader(fake.ProtoAMQP))
case *frames.PerformOpen:
return newResponse(fake.PerformOpen("container"))
case *frames.PerformClose:
return newResponse(fake.PerformClose(nil))
case *frames.PerformBegin:
return newResponse(fake.PerformBegin(channel, remoteChannel))
case *frames.PerformEnd:
return newResponse(fake.PerformEnd(channel, nil))
case *frames.PerformAttach:
return newResponse(fake.ReceiverAttach(channel, tt.Name, 0, rsm, tt.Source.Filter))
case *frames.PerformDetach:
return newResponse(fake.PerformDetach(channel, 0, nil))
default:
return fake.Response{}, nil
}
}
}
// similar to receiverFrameHandler but returns an error on unhandled frames
// NOTE: consumes flow frames
func receiverFrameHandlerNoUnhandled(channel uint16, rsm encoding.ReceiverSettleMode) func(uint16, frames.FrameBody) (fake.Response, error) {
return func(remoteChannel uint16, req frames.FrameBody) (fake.Response, error) {
resp, err := receiverFrameHandler(channel, rsm)(remoteChannel, req)
if resp.Payload != nil || err != nil {
return resp, err
}
switch req.(type) {
case *frames.PerformFlow, *fake.KeepAlive:
return fake.Response{}, nil
default:
return fake.Response{}, fmt.Errorf("unhandled frame %T", req)
}
}
}
|
