mirror of
https://github.com/featurebasedb/featurebase.git
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71 lines
1.6 KiB
Go
71 lines
1.6 KiB
Go
// Copyright 2020 Pilosa Corp.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package pgtest
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import (
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"errors"
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"net"
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"sync"
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)
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// errListenerClosed is an error returned when the listener is closed.
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var errListenerClosed = errors.New("listener closed")
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type inMemoryListener struct {
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ch chan net.Conn
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closed chan struct{}
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once sync.Once
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}
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func (l *inMemoryListener) Accept() (net.Conn, error) {
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select {
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case <-l.closed:
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return nil, errListenerClosed
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default:
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}
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select {
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case conn := <-l.ch:
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return conn, nil
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case <-l.closed:
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return nil, errListenerClosed
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}
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}
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func (l *inMemoryListener) Close() error {
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l.once.Do(func() { close(l.closed) })
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return nil
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}
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type memAddr struct{}
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func (a memAddr) Network() string { return "memory" }
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func (a memAddr) String() string { return "memory" }
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func (l *inMemoryListener) Addr() net.Addr {
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return memAddr{}
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}
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func (l *inMemoryListener) Dial() (net.Conn, error) {
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serverConn, clientConn := net.Pipe()
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select {
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case l.ch <- serverConn:
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return clientConn, nil
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case <-l.closed:
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serverConn.Close()
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clientConn.Close()
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return nil, errListenerClosed
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}
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}
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