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/
server.go
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/
server.go
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// Copyright 2020 Pilosa Corp.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package pgtest
import (
"context"
"net"
"testing"
"github.com/pilosa/pilosa/v2/pg"
"github.com/pkg/errors"
"golang.org/x/sync/errgroup"
)
// ShutdownFunc is a function to use to shut down a test fixture.
// This function will send a shutdown signal and then wait for completion.
type ShutdownFunc func() error
// Finish invokes the shutdown function and fails the test if an error occurs.
func (f ShutdownFunc) Finish(tb testing.TB, name string) {
err := f()
if err != nil {
tb.Errorf("failed to shut down %s: %v", name, err)
}
}
// ServeTCP creates a TCP listener and serves postgres wire protocol on it.
func ServeTCP(addr string, server *pg.Server) (net.Addr, ShutdownFunc, error) {
listener, err := net.Listen("tcp", addr)
if err != nil {
return nil, nil, errors.Wrap(err, "listening on TCP")
}
laddr := listener.Addr()
ctx, cancel := context.WithCancel(context.Background())
var eg errgroup.Group
eg.Go(func() error { return server.Serve(ctx, listener) })
return laddr,
func() error {
cancel()
return eg.Wait()
},
nil
}
// ServeTLS sets up TLS on the server and invokes ServeTCP.
func ServeTLS(addr string, server *pg.Server) (net.Addr, ShutdownFunc, error) {
err := SetupTLS(server)
if err != nil {
return nil, nil, errors.Wrap(err, "server TLS setup failed")
}
return ServeTCP(addr, server)
}
// ConnectFunc is a function to connect to a server.
type ConnectFunc func() (net.Conn, error)
// ServeMem serves postgres on in-memory connections.
// TLS does not work here, as it relies on the OS to buffer and discard data.
func ServeMem(server *pg.Server) (ConnectFunc, ShutdownFunc, error) {
listener := &inMemoryListener{
ch: make(chan net.Conn),
closed: make(chan struct{}),
}
ctx, cancel := context.WithCancel(context.Background())
var eg errgroup.Group
eg.Go(func() error { return server.Serve(ctx, listener) })
return listener.Dial,
func() error {
cancel()
return eg.Wait()
},
nil
}