From 2f6b8f3f5665228c0800e66b05e797ef119f3ef2 Mon Sep 17 00:00:00 2001 From: Jack Christensen Date: Sat, 31 Aug 2019 17:01:54 -0500 Subject: [PATCH] Fix context timeout on connect --- go.mod | 11 ++++--- go.sum | 88 ++++++++++++++++++++++++++++++++++++++++++++++++++ pgconn.go | 3 ++ pgconn_test.go | 62 +++++++++++++++++++++++++++++++++++ 4 files changed, 159 insertions(+), 5 deletions(-) diff --git a/go.mod b/go.mod index 6e270cd6..11692c10 100644 --- a/go.mod +++ b/go.mod @@ -5,10 +5,11 @@ go 1.12 require ( github.com/jackc/chunkreader/v2 v2.0.0 github.com/jackc/pgio v1.0.0 + github.com/jackc/pgmock v0.0.0-20190831213851-13a1b77aafa2 github.com/jackc/pgpassfile v1.0.0 - github.com/jackc/pgproto3/v2 v2.0.0-rc3 - github.com/stretchr/testify v1.3.0 - golang.org/x/crypto v0.0.0-20190411191339-88737f569e3a - golang.org/x/text v0.3.0 - golang.org/x/xerrors v0.0.0-20190513163551-3ee3066db522 + github.com/jackc/pgproto3/v2 v2.0.0-rc3.0.20190831210041-4c03ce451f29 + github.com/stretchr/testify v1.4.0 + golang.org/x/crypto v0.0.0-20190820162420-60c769a6c586 + golang.org/x/text v0.3.2 + golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7 ) diff --git a/go.sum b/go.sum index ed8eb401..c1b3d405 100644 --- a/go.sum +++ b/go.sum @@ -1,23 +1,111 @@ +github.com/cockroachdb/apd v1.1.0/go.mod h1:8Sl8LxpKi29FqWXR16WEFZRNSz3SoPzUzeMeY4+DwBQ= +github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4= +github.com/coreos/go-systemd v0.0.0-20190719114852-fd7a80b32e1f/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4= +github.com/creack/pty v1.1.7/go.mod h1:lj5s0c3V2DBrqTV7llrYr5NG6My20zk30Fl46Y7DoTY= github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8= github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= +github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY= +github.com/jackc/chunkreader v1.0.0/go.mod h1:RT6O25fNZIuasFJRyZ4R/Y2BbhasbmZXF9QQ7T3kePo= github.com/jackc/chunkreader/v2 v2.0.0 h1:DUwgMQuuPnS0rhMXenUtZpqZqrR/30NWY+qQvTpSvEs= github.com/jackc/chunkreader/v2 v2.0.0/go.mod h1:odVSm741yZoC3dpHEUXIqA9tQRhFrgOHwnPIn9lDKlk= +github.com/jackc/pgconn v0.0.0-20190420214824-7e0022ef6ba3/go.mod h1:jkELnwuX+w9qN5YIfX0fl88Ehu4XC3keFuOJJk9pcnA= +github.com/jackc/pgconn v0.0.0-20190824142844-760dd75542eb/go.mod h1:lLjNuW/+OfW9/pnVKPazfWOgNfH2aPem8YQ7ilXGvJE= +github.com/jackc/pgconn v0.0.0-20190831204454-2fabfa3c18b7/go.mod h1:ZJKsE/KZfsUgOEh9hBm+xYTstcNHg7UPMVJqRfQxq4s= github.com/jackc/pgio v1.0.0 h1:g12B9UwVnzGhueNavwioyEEpAmqMe1E/BN9ES+8ovkE= github.com/jackc/pgio v1.0.0/go.mod h1:oP+2QK2wFfUWgr+gxjoBH9KGBb31Eio69xUb0w5bYf8= +github.com/jackc/pgmock v0.0.0-20190831213851-13a1b77aafa2 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h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= +gopkg.in/inconshreveable/log15.v2 v2.0.0-20180818164646-67afb5ed74ec/go.mod h1:aPpfJ7XW+gOuirDoZ8gHhLh3kZ1B08FtV2bbmy7Jv3s= +gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw= +gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= diff --git a/pgconn.go b/pgconn.go index d51eb76a..5c01d1dc 100644 --- a/pgconn.go +++ b/pgconn.go @@ -174,6 +174,9 @@ func connect(ctx context.Context, config *Config, fallbackConfig *FallbackConfig func() { pgConn.conn.SetDeadline(time.Time{}) }, ) + pgConn.contextWatcher.Watch(ctx) + defer pgConn.contextWatcher.Unwatch() + pgConn.frontend = config.BuildFrontend(pgConn.conn, pgConn.conn) startupMsg := pgproto3.StartupMessage{ diff --git a/pgconn_test.go b/pgconn_test.go index 3fbdf8df..4a67a2e0 100644 --- a/pgconn_test.go +++ b/pgconn_test.go @@ -18,6 +18,7 @@ import ( "time" "github.com/jackc/pgconn" + "github.com/jackc/pgmock" "github.com/jackc/pgproto3/v2" errors "golang.org/x/xerrors" @@ -73,6 +74,67 @@ func TestConnectTLS(t *testing.T) { closeConn(t, conn) } +type pgmockWaitStep time.Duration + +func (s pgmockWaitStep) Step(*pgproto3.Backend) error { + time.Sleep(time.Duration(s)) + return nil +} + +func TestConnectWithContextThatTimesOut(t *testing.T) { + t.Parallel() + + script := &pgmock.Script{ + Steps: []pgmock.Step{ + pgmock.ExpectAnyMessage(&pgproto3.StartupMessage{ProtocolVersion: pgproto3.ProtocolVersionNumber, Parameters: map[string]string{}}), + pgmock.SendMessage(&pgproto3.AuthenticationOk{}), + pgmockWaitStep(time.Millisecond * 500), + pgmock.SendMessage(&pgproto3.BackendKeyData{ProcessID: 0, SecretKey: 0}), + pgmock.SendMessage(&pgproto3.ReadyForQuery{TxStatus: 'I'}), + }, + } + + ln, err := net.Listen("tcp", "127.0.0.1:") + require.NoError(t, err) + defer ln.Close() + + serverErrChan := make(chan error, 1) + go func() { + defer close(serverErrChan) + + conn, err := ln.Accept() + if err != nil { + serverErrChan <- err + return + } + defer conn.Close() + + err = conn.SetDeadline(time.Now().Add(time.Millisecond * 450)) + if err != nil { + serverErrChan <- err + return + } + + err = script.Run(pgproto3.NewBackend(pgproto3.NewChunkReader(conn), conn)) + if err != nil { + serverErrChan <- err + return + } + }() + + parts := strings.Split(ln.Addr().String(), ":") + host := parts[0] + port := parts[1] + connStr := fmt.Sprintf("sslmode=disable host=%s port=%s", host, port) + tooLate := time.Now().Add(time.Millisecond * 500) + + ctx, cancel := context.WithTimeout(context.Background(), time.Millisecond*50) + defer cancel() + _, err = pgconn.Connect(ctx, connStr) + require.True(t, pgconn.Timeout(err), err) + require.True(t, time.Now().Before(tooLate)) +} + func TestConnectInvalidUser(t *testing.T) { t.Parallel()