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chore: move InProcNet to testutil#18563
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+117 −108
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120 changes: 12 additions & 108 deletionscli/portforward_test.go
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105 changes: 105 additions & 0 deletionstestutil/net.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,105 @@ | ||
| package testutil | ||
| import ( | ||
| "context" | ||
| "net" | ||
| "sync" | ||
| "golang.org/x/xerrors" | ||
| ) | ||
| type Addr struct { | ||
| network string | ||
| addr string | ||
| } | ||
| func NewAddr(network, addr string) Addr { | ||
| return Addr{network, addr} | ||
| } | ||
| func (a Addr) Network() string { | ||
| return a.network | ||
| } | ||
| func (a Addr) Address() string { | ||
| return a.addr | ||
| } | ||
| func (a Addr) String() string { | ||
| return a.network + "|" + a.addr | ||
| } | ||
| type InProcNet struct { | ||
| sync.Mutex | ||
| listeners map[Addr]*inProcListener | ||
| } | ||
| type inProcListener struct { | ||
| c chan net.Conn | ||
| n *InProcNet | ||
| a Addr | ||
| o sync.Once | ||
| } | ||
| func NewInProcNet() *InProcNet { | ||
| return &InProcNet{listeners: make(map[Addr]*inProcListener)} | ||
| } | ||
| func (n *InProcNet) Listen(network, address string) (net.Listener, error) { | ||
| a := Addr{network, address} | ||
| n.Lock() | ||
| defer n.Unlock() | ||
| if _, ok := n.listeners[a]; ok { | ||
| return nil, xerrors.New("busy") | ||
| } | ||
| l := newInProcListener(n, a) | ||
| n.listeners[a] = l | ||
| return l, nil | ||
| } | ||
| func (n *InProcNet) Dial(ctx context.Context, a Addr) (net.Conn, error) { | ||
| n.Lock() | ||
| defer n.Unlock() | ||
| l, ok := n.listeners[a] | ||
| if !ok { | ||
| return nil, xerrors.Errorf("nothing listening on %s", a) | ||
| } | ||
| x, y := net.Pipe() | ||
| select { | ||
| case <-ctx.Done(): | ||
| return nil, ctx.Err() | ||
| case l.c <- x: | ||
| return y, nil | ||
| } | ||
| } | ||
| func newInProcListener(n *InProcNet, a Addr) *inProcListener { | ||
| return &inProcListener{ | ||
| c: make(chan net.Conn), | ||
| n: n, | ||
| a: a, | ||
| } | ||
| } | ||
| func (l *inProcListener) Accept() (net.Conn, error) { | ||
| c, ok := <-l.c | ||
| if !ok { | ||
| return nil, net.ErrClosed | ||
| } | ||
| return c, nil | ||
| } | ||
| func (l *inProcListener) Close() error { | ||
| l.o.Do(func() { | ||
| l.n.Lock() | ||
| defer l.n.Unlock() | ||
| delete(l.n.listeners, l.a) | ||
| close(l.c) | ||
| }) | ||
| return nil | ||
| } | ||
| func (l *inProcListener) Addr() net.Addr { | ||
| return l.a | ||
| } |
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