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修正依赖问题

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This commit is contained in:
huang
2025-09-08 13:53:49 +08:00
parent 7e0fd53dd3
commit b63abe1d2d
164 changed files with 2155 additions and 1080 deletions
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4
vendor/github.com/jackc/pgx/v5/pgconn/auth_scram.go generated vendored
View File

@@ -47,7 +47,7 @@ func (c *PgConn) scramAuth(serverAuthMechanisms []string) error {
return err
}
// Receive server-first-message payload in a AuthenticationSASLContinue.
// Receive server-first-message payload in an AuthenticationSASLContinue.
saslContinue, err := c.rxSASLContinue()
if err != nil {
return err
@@ -67,7 +67,7 @@ func (c *PgConn) scramAuth(serverAuthMechanisms []string) error {
return err
}
// Receive server-final-message payload in a AuthenticationSASLFinal.
// Receive server-final-message payload in an AuthenticationSASLFinal.
saslFinal, err := c.rxSASLFinal()
if err != nil {
return err

39
vendor/github.com/jackc/pgx/v5/pgconn/config.go generated vendored
View File

@@ -60,6 +60,11 @@ type Config struct {
// OnNotification is a callback function called when a notification from the LISTEN/NOTIFY system is received.
OnNotification NotificationHandler
// OnPgError is a callback function called when a Postgres error is received by the server. The default handler will close
// the connection on any FATAL errors. If you override this handler you should call the previously set handler or ensure
// that you close on FATAL errors by returning false.
OnPgError PgErrorHandler
createdByParseConfig bool // Used to enforce created by ParseConfig rule.
}
@@ -232,12 +237,12 @@ func ParseConfigWithOptions(connString string, options ParseConfigOptions) (*Con
if strings.HasPrefix(connString, "postgres://") || strings.HasPrefix(connString, "postgresql://") {
connStringSettings, err = parseURLSettings(connString)
if err != nil {
return nil, &parseConfigError{connString: connString, msg: "failed to parse as URL", err: err}
return nil, &ParseConfigError{ConnString: connString, msg: "failed to parse as URL", err: err}
}
} else {
connStringSettings, err = parseDSNSettings(connString)
if err != nil {
return nil, &parseConfigError{connString: connString, msg: "failed to parse as DSN", err: err}
return nil, &ParseConfigError{ConnString: connString, msg: "failed to parse as DSN", err: err}
}
}
}
@@ -246,7 +251,7 @@ func ParseConfigWithOptions(connString string, options ParseConfigOptions) (*Con
if service, present := settings["service"]; present {
serviceSettings, err := parseServiceSettings(settings["servicefile"], service)
if err != nil {
return nil, &parseConfigError{connString: connString, msg: "failed to read service", err: err}
return nil, &ParseConfigError{ConnString: connString, msg: "failed to read service", err: err}
}
settings = mergeSettings(defaultSettings, envSettings, serviceSettings, connStringSettings)
@@ -261,12 +266,19 @@ func ParseConfigWithOptions(connString string, options ParseConfigOptions) (*Con
BuildFrontend: func(r io.Reader, w io.Writer) *pgproto3.Frontend {
return pgproto3.NewFrontend(r, w)
},
OnPgError: func(_ *PgConn, pgErr *PgError) bool {
// we want to automatically close any fatal errors
if strings.EqualFold(pgErr.Severity, "FATAL") {
return false
}
return true
},
}
if connectTimeoutSetting, present := settings["connect_timeout"]; present {
connectTimeout, err := parseConnectTimeoutSetting(connectTimeoutSetting)
if err != nil {
return nil, &parseConfigError{connString: connString, msg: "invalid connect_timeout", err: err}
return nil, &ParseConfigError{ConnString: connString, msg: "invalid connect_timeout", err: err}
}
config.ConnectTimeout = connectTimeout
config.DialFunc = makeConnectTimeoutDialFunc(connectTimeout)
@@ -328,7 +340,7 @@ func ParseConfigWithOptions(connString string, options ParseConfigOptions) (*Con
port, err := parsePort(portStr)
if err != nil {
return nil, &parseConfigError{connString: connString, msg: "invalid port", err: err}
return nil, &ParseConfigError{ConnString: connString, msg: "invalid port", err: err}
}
var tlsConfigs []*tls.Config
@@ -340,7 +352,7 @@ func ParseConfigWithOptions(connString string, options ParseConfigOptions) (*Con
var err error
tlsConfigs, err = configTLS(settings, host, options)
if err != nil {
return nil, &parseConfigError{connString: connString, msg: "failed to configure TLS", err: err}
return nil, &ParseConfigError{ConnString: connString, msg: "failed to configure TLS", err: err}
}
}
@@ -384,7 +396,7 @@ func ParseConfigWithOptions(connString string, options ParseConfigOptions) (*Con
case "any":
// do nothing
default:
return nil, &parseConfigError{connString: connString, msg: fmt.Sprintf("unknown target_session_attrs value: %v", tsa)}
return nil, &ParseConfigError{ConnString: connString, msg: fmt.Sprintf("unknown target_session_attrs value: %v", tsa)}
}
return config, nil
@@ -709,6 +721,9 @@ func configTLS(settings map[string]string, thisHost string, parseConfigOptions P
return nil, fmt.Errorf("unable to read sslkey: %w", err)
}
block, _ := pem.Decode(buf)
if block == nil {
return nil, errors.New("failed to decode sslkey")
}
var pemKey []byte
var decryptedKey []byte
var decryptedError error
@@ -809,7 +824,7 @@ func makeConnectTimeoutDialFunc(timeout time.Duration) DialFunc {
return d.DialContext
}
// ValidateConnectTargetSessionAttrsReadWrite is an ValidateConnectFunc that implements libpq compatible
// ValidateConnectTargetSessionAttrsReadWrite is a ValidateConnectFunc that implements libpq compatible
// target_session_attrs=read-write.
func ValidateConnectTargetSessionAttrsReadWrite(ctx context.Context, pgConn *PgConn) error {
result := pgConn.ExecParams(ctx, "show transaction_read_only", nil, nil, nil, nil).Read()
@@ -824,7 +839,7 @@ func ValidateConnectTargetSessionAttrsReadWrite(ctx context.Context, pgConn *PgC
return nil
}
// ValidateConnectTargetSessionAttrsReadOnly is an ValidateConnectFunc that implements libpq compatible
// ValidateConnectTargetSessionAttrsReadOnly is a ValidateConnectFunc that implements libpq compatible
// target_session_attrs=read-only.
func ValidateConnectTargetSessionAttrsReadOnly(ctx context.Context, pgConn *PgConn) error {
result := pgConn.ExecParams(ctx, "show transaction_read_only", nil, nil, nil, nil).Read()
@@ -839,7 +854,7 @@ func ValidateConnectTargetSessionAttrsReadOnly(ctx context.Context, pgConn *PgCo
return nil
}
// ValidateConnectTargetSessionAttrsStandby is an ValidateConnectFunc that implements libpq compatible
// ValidateConnectTargetSessionAttrsStandby is a ValidateConnectFunc that implements libpq compatible
// target_session_attrs=standby.
func ValidateConnectTargetSessionAttrsStandby(ctx context.Context, pgConn *PgConn) error {
result := pgConn.ExecParams(ctx, "select pg_is_in_recovery()", nil, nil, nil, nil).Read()
@@ -854,7 +869,7 @@ func ValidateConnectTargetSessionAttrsStandby(ctx context.Context, pgConn *PgCon
return nil
}
// ValidateConnectTargetSessionAttrsPrimary is an ValidateConnectFunc that implements libpq compatible
// ValidateConnectTargetSessionAttrsPrimary is a ValidateConnectFunc that implements libpq compatible
// target_session_attrs=primary.
func ValidateConnectTargetSessionAttrsPrimary(ctx context.Context, pgConn *PgConn) error {
result := pgConn.ExecParams(ctx, "select pg_is_in_recovery()", nil, nil, nil, nil).Read()
@@ -869,7 +884,7 @@ func ValidateConnectTargetSessionAttrsPrimary(ctx context.Context, pgConn *PgCon
return nil
}
// ValidateConnectTargetSessionAttrsPreferStandby is an ValidateConnectFunc that implements libpq compatible
// ValidateConnectTargetSessionAttrsPreferStandby is a ValidateConnectFunc that implements libpq compatible
// target_session_attrs=prefer-standby.
func ValidateConnectTargetSessionAttrsPreferStandby(ctx context.Context, pgConn *PgConn) error {
result := pgConn.ExecParams(ctx, "select pg_is_in_recovery()", nil, nil, nil, nil).Read()

30
vendor/github.com/jackc/pgx/v5/pgconn/errors.go generated vendored
View File

@@ -57,22 +57,23 @@ func (pe *PgError) SQLState() string {
return pe.Code
}
type connectError struct {
config *Config
// ConnectError is the error returned when a connection attempt fails.
type ConnectError struct {
Config *Config // The configuration that was used in the connection attempt.
msg string
err error
}
func (e *connectError) Error() string {
func (e *ConnectError) Error() string {
sb := &strings.Builder{}
fmt.Fprintf(sb, "failed to connect to `host=%s user=%s database=%s`: %s", e.config.Host, e.config.User, e.config.Database, e.msg)
fmt.Fprintf(sb, "failed to connect to `host=%s user=%s database=%s`: %s", e.Config.Host, e.Config.User, e.Config.Database, e.msg)
if e.err != nil {
fmt.Fprintf(sb, " (%s)", e.err.Error())
}
return sb.String()
}
func (e *connectError) Unwrap() error {
func (e *ConnectError) Unwrap() error {
return e.err
}
@@ -88,33 +89,38 @@ func (e *connLockError) Error() string {
return e.status
}
type parseConfigError struct {
connString string
// ParseConfigError is the error returned when a connection string cannot be parsed.
type ParseConfigError struct {
ConnString string // The connection string that could not be parsed.
msg string
err error
}
func (e *parseConfigError) Error() string {
connString := redactPW(e.connString)
func (e *ParseConfigError) Error() string {
// Now that ParseConfigError is public and ConnString is available to the developer, perhaps it would be better only
// return a static string. That would ensure that the error message cannot leak a password. The ConnString field would
// allow access to the original string if desired and Unwrap would allow access to the underlying error.
connString := redactPW(e.ConnString)
if e.err == nil {
return fmt.Sprintf("cannot parse `%s`: %s", connString, e.msg)
}
return fmt.Sprintf("cannot parse `%s`: %s (%s)", connString, e.msg, e.err.Error())
}
func (e *parseConfigError) Unwrap() error {
func (e *ParseConfigError) Unwrap() error {
return e.err
}
func normalizeTimeoutError(ctx context.Context, err error) error {
if err, ok := err.(net.Error); ok && err.Timeout() {
var netErr net.Error
if errors.As(err, &netErr) && netErr.Timeout() {
if ctx.Err() == context.Canceled {
// Since the timeout was caused by a context cancellation, the actual error is context.Canceled not the timeout error.
return context.Canceled
} else if ctx.Err() == context.DeadlineExceeded {
return &errTimeout{err: ctx.Err()}
} else {
return &errTimeout{err: err}
return &errTimeout{err: netErr}
}
}
return err

223
vendor/github.com/jackc/pgx/v5/pgconn/pgconn.go generated vendored
View File

@@ -52,6 +52,12 @@ type LookupFunc func(ctx context.Context, host string) (addrs []string, err erro
// BuildFrontendFunc is a function that can be used to create Frontend implementation for connection.
type BuildFrontendFunc func(r io.Reader, w io.Writer) *pgproto3.Frontend
// PgErrorHandler is a function that handles errors returned from Postgres. This function must return true to keep
// the connection open. Returning false will cause the connection to be closed immediately. You should return
// false on any FATAL-severity errors. This will not receive network errors. The *PgConn is provided so the handler is
// aware of the origin of the error, but it must not invoke any query method.
type PgErrorHandler func(*PgConn, *PgError) bool
// NoticeHandler is a function that can handle notices received from the PostgreSQL server. Notices can be received at
// any time, usually during handling of a query response. The *PgConn is provided so the handler is aware of the origin
// of the notice, but it must not invoke any query method. Be aware that this is distinct from LISTEN/NOTIFY
@@ -74,6 +80,7 @@ type PgConn struct {
frontend *pgproto3.Frontend
bgReader *bgreader.BGReader
slowWriteTimer *time.Timer
bgReaderStarted chan struct{}
config *Config
@@ -145,11 +152,11 @@ func ConnectConfig(octx context.Context, config *Config) (pgConn *PgConn, err er
ctx := octx
fallbackConfigs, err = expandWithIPs(ctx, config.LookupFunc, fallbackConfigs)
if err != nil {
return nil, &connectError{config: config, msg: "hostname resolving error", err: err}
return nil, &ConnectError{Config: config, msg: "hostname resolving error", err: err}
}
if len(fallbackConfigs) == 0 {
return nil, &connectError{config: config, msg: "hostname resolving error", err: errors.New("ip addr wasn't found")}
return nil, &ConnectError{Config: config, msg: "hostname resolving error", err: errors.New("ip addr wasn't found")}
}
foundBestServer := false
@@ -171,7 +178,7 @@ func ConnectConfig(octx context.Context, config *Config) (pgConn *PgConn, err er
foundBestServer = true
break
} else if pgerr, ok := err.(*PgError); ok {
err = &connectError{config: config, msg: "server error", err: pgerr}
err = &ConnectError{Config: config, msg: "server error", err: pgerr}
const ERRCODE_INVALID_PASSWORD = "28P01" // wrong password
const ERRCODE_INVALID_AUTHORIZATION_SPECIFICATION = "28000" // wrong password or bad pg_hba.conf settings
const ERRCODE_INVALID_CATALOG_NAME = "3D000" // db does not exist
@@ -182,7 +189,7 @@ func ConnectConfig(octx context.Context, config *Config) (pgConn *PgConn, err er
pgerr.Code == ERRCODE_INSUFFICIENT_PRIVILEGE {
break
}
} else if cerr, ok := err.(*connectError); ok {
} else if cerr, ok := err.(*ConnectError); ok {
if _, ok := cerr.err.(*NotPreferredError); ok {
fallbackConfig = fc
}
@@ -192,7 +199,7 @@ func ConnectConfig(octx context.Context, config *Config) (pgConn *PgConn, err er
if !foundBestServer && fallbackConfig != nil {
pgConn, err = connect(ctx, config, fallbackConfig, true)
if pgerr, ok := err.(*PgError); ok {
err = &connectError{config: config, msg: "server error", err: pgerr}
err = &ConnectError{Config: config, msg: "server error", err: pgerr}
}
}
@@ -204,7 +211,7 @@ func ConnectConfig(octx context.Context, config *Config) (pgConn *PgConn, err er
err := config.AfterConnect(ctx, pgConn)
if err != nil {
pgConn.conn.Close()
return nil, &connectError{config: config, msg: "AfterConnect error", err: err}
return nil, &ConnectError{Config: config, msg: "AfterConnect error", err: err}
}
}
@@ -276,7 +283,7 @@ func connect(ctx context.Context, config *Config, fallbackConfig *FallbackConfig
network, address := NetworkAddress(fallbackConfig.Host, fallbackConfig.Port)
netConn, err := config.DialFunc(ctx, network, address)
if err != nil {
return nil, &connectError{config: config, msg: "dial error", err: normalizeTimeoutError(ctx, err)}
return nil, &ConnectError{Config: config, msg: "dial error", err: normalizeTimeoutError(ctx, err)}
}
pgConn.conn = netConn
@@ -288,7 +295,7 @@ func connect(ctx context.Context, config *Config, fallbackConfig *FallbackConfig
pgConn.contextWatcher.Unwatch() // Always unwatch `netConn` after TLS.
if err != nil {
netConn.Close()
return nil, &connectError{config: config, msg: "tls error", err: err}
return nil, &ConnectError{Config: config, msg: "tls error", err: normalizeTimeoutError(ctx, err)}
}
pgConn.conn = nbTLSConn
@@ -301,8 +308,14 @@ func connect(ctx context.Context, config *Config, fallbackConfig *FallbackConfig
pgConn.parameterStatuses = make(map[string]string)
pgConn.status = connStatusConnecting
pgConn.bgReader = bgreader.New(pgConn.conn)
pgConn.slowWriteTimer = time.AfterFunc(time.Duration(math.MaxInt64), pgConn.bgReader.Start)
pgConn.slowWriteTimer = time.AfterFunc(time.Duration(math.MaxInt64),
func() {
pgConn.bgReader.Start()
pgConn.bgReaderStarted <- struct{}{}
},
)
pgConn.slowWriteTimer.Stop()
pgConn.bgReaderStarted = make(chan struct{})
pgConn.frontend = config.BuildFrontend(pgConn.bgReader, pgConn.conn)
startupMsg := pgproto3.StartupMessage{
@@ -323,7 +336,7 @@ func connect(ctx context.Context, config *Config, fallbackConfig *FallbackConfig
pgConn.frontend.Send(&startupMsg)
if err := pgConn.flushWithPotentialWriteReadDeadlock(); err != nil {
pgConn.conn.Close()
return nil, &connectError{config: config, msg: "failed to write startup message", err: normalizeTimeoutError(ctx, err)}
return nil, &ConnectError{Config: config, msg: "failed to write startup message", err: normalizeTimeoutError(ctx, err)}
}
for {
@@ -333,7 +346,7 @@ func connect(ctx context.Context, config *Config, fallbackConfig *FallbackConfig
if err, ok := err.(*PgError); ok {
return nil, err
}
return nil, &connectError{config: config, msg: "failed to receive message", err: normalizeTimeoutError(ctx, err)}
return nil, &ConnectError{Config: config, msg: "failed to receive message", err: normalizeTimeoutError(ctx, err)}
}
switch msg := msg.(type) {
@@ -346,26 +359,26 @@ func connect(ctx context.Context, config *Config, fallbackConfig *FallbackConfig
err = pgConn.txPasswordMessage(pgConn.config.Password)
if err != nil {
pgConn.conn.Close()
return nil, &connectError{config: config, msg: "failed to write password message", err: err}
return nil, &ConnectError{Config: config, msg: "failed to write password message", err: err}
}
case *pgproto3.AuthenticationMD5Password:
digestedPassword := "md5" + hexMD5(hexMD5(pgConn.config.Password+pgConn.config.User)+string(msg.Salt[:]))
err = pgConn.txPasswordMessage(digestedPassword)
if err != nil {
pgConn.conn.Close()
return nil, &connectError{config: config, msg: "failed to write password message", err: err}
return nil, &ConnectError{Config: config, msg: "failed to write password message", err: err}
}
case *pgproto3.AuthenticationSASL:
err = pgConn.scramAuth(msg.AuthMechanisms)
if err != nil {
pgConn.conn.Close()
return nil, &connectError{config: config, msg: "failed SASL auth", err: err}
return nil, &ConnectError{Config: config, msg: "failed SASL auth", err: err}
}
case *pgproto3.AuthenticationGSS:
err = pgConn.gssAuth()
if err != nil {
pgConn.conn.Close()
return nil, &connectError{config: config, msg: "failed GSS auth", err: err}
return nil, &ConnectError{Config: config, msg: "failed GSS auth", err: err}
}
case *pgproto3.ReadyForQuery:
pgConn.status = connStatusIdle
@@ -383,7 +396,7 @@ func connect(ctx context.Context, config *Config, fallbackConfig *FallbackConfig
return pgConn, nil
}
pgConn.conn.Close()
return nil, &connectError{config: config, msg: "ValidateConnect failed", err: err}
return nil, &ConnectError{Config: config, msg: "ValidateConnect failed", err: err}
}
}
return pgConn, nil
@@ -394,7 +407,7 @@ func connect(ctx context.Context, config *Config, fallbackConfig *FallbackConfig
return nil, ErrorResponseToPgError(msg)
default:
pgConn.conn.Close()
return nil, &connectError{config: config, msg: "received unexpected message", err: err}
return nil, &ConnectError{Config: config, msg: "received unexpected message", err: err}
}
}
}
@@ -540,11 +553,12 @@ func (pgConn *PgConn) receiveMessage() (pgproto3.BackendMessage, error) {
case *pgproto3.ParameterStatus:
pgConn.parameterStatuses[msg.Name] = msg.Value
case *pgproto3.ErrorResponse:
if msg.Severity == "FATAL" {
err := ErrorResponseToPgError(msg)
if pgConn.config.OnPgError != nil && !pgConn.config.OnPgError(pgConn, err) {
pgConn.status = connStatusClosed
pgConn.conn.Close() // Ignore error as the connection is already broken and there is already an error to return.
close(pgConn.cleanupDone)
return nil, ErrorResponseToPgError(msg)
return nil, err
}
case *pgproto3.NoticeResponse:
if pgConn.config.OnNotice != nil {
@@ -593,7 +607,7 @@ func (pgConn *PgConn) Frontend() *pgproto3.Frontend {
return pgConn.frontend
}
// Close closes a connection. It is safe to call Close on a already closed connection. Close attempts a clean close by
// Close closes a connection. It is safe to call Close on an already closed connection. Close attempts a clean close by
// sending the exit message to PostgreSQL. However, this could block so ctx is available to limit the time to wait. The
// underlying net.Conn.Close() will always be called regardless of any other errors.
func (pgConn *PgConn) Close(ctx context.Context) error {
@@ -806,6 +820,9 @@ type StatementDescription struct {
// Prepare creates a prepared statement. If the name is empty, the anonymous prepared statement will be used. This
// allows Prepare to also to describe statements without creating a server-side prepared statement.
//
// Prepare does not send a PREPARE statement to the server. It uses the PostgreSQL Parse and Describe protocol messages
// directly.
func (pgConn *PgConn) Prepare(ctx context.Context, name, sql string, paramOIDs []uint32) (*StatementDescription, error) {
if err := pgConn.lock(); err != nil {
return nil, err
@@ -862,6 +879,52 @@ readloop:
return psd, nil
}
// Deallocate deallocates a prepared statement.
//
// Deallocate does not send a DEALLOCATE statement to the server. It uses the PostgreSQL Close protocol message
// directly. This has slightly different behavior than executing DEALLOCATE statement.
// - Deallocate can succeed in an aborted transaction.
// - Deallocating a non-existent prepared statement is not an error.
func (pgConn *PgConn) Deallocate(ctx context.Context, name string) error {
if err := pgConn.lock(); err != nil {
return err
}
defer pgConn.unlock()
if ctx != context.Background() {
select {
case <-ctx.Done():
return newContextAlreadyDoneError(ctx)
default:
}
pgConn.contextWatcher.Watch(ctx)
defer pgConn.contextWatcher.Unwatch()
}
pgConn.frontend.SendClose(&pgproto3.Close{ObjectType: 'S', Name: name})
pgConn.frontend.SendSync(&pgproto3.Sync{})
err := pgConn.flushWithPotentialWriteReadDeadlock()
if err != nil {
pgConn.asyncClose()
return err
}
for {
msg, err := pgConn.receiveMessage()
if err != nil {
pgConn.asyncClose()
return normalizeTimeoutError(ctx, err)
}
switch msg := msg.(type) {
case *pgproto3.ErrorResponse:
return ErrorResponseToPgError(msg)
case *pgproto3.ReadyForQuery:
return nil
}
}
}
// ErrorResponseToPgError converts a wire protocol error message to a *PgError.
func ErrorResponseToPgError(msg *pgproto3.ErrorResponse) *PgError {
return &PgError{
@@ -935,16 +998,21 @@ func (pgConn *PgConn) CancelRequest(ctx context.Context) error {
buf := make([]byte, 16)
binary.BigEndian.PutUint32(buf[0:4], 16)
binary.BigEndian.PutUint32(buf[4:8], 80877102)
binary.BigEndian.PutUint32(buf[8:12], uint32(pgConn.pid))
binary.BigEndian.PutUint32(buf[12:16], uint32(pgConn.secretKey))
// Postgres will process the request and close the connection
// so when don't need to read the reply
// https://www.postgresql.org/docs/current/protocol-flow.html#id-1.10.6.7.10
_, err = cancelConn.Write(buf)
return err
binary.BigEndian.PutUint32(buf[8:12], pgConn.pid)
binary.BigEndian.PutUint32(buf[12:16], pgConn.secretKey)
if _, err := cancelConn.Write(buf); err != nil {
return fmt.Errorf("write to connection for cancellation: %w", err)
}
// Wait for the cancel request to be acknowledged by the server.
// It copies the behavior of the libpq: https://github.com/postgres/postgres/blob/REL_16_0/src/interfaces/libpq/fe-connect.c#L4946-L4960
_, _ = cancelConn.Read(buf)
return nil
}
// WaitForNotification waits for a LISTON/NOTIFY message to be received. It returns an error if a notification was not
// WaitForNotification waits for a LISTEN/NOTIFY message to be received. It returns an error if a notification was not
// received.
func (pgConn *PgConn) WaitForNotification(ctx context.Context) error {
if err := pgConn.lock(); err != nil {
@@ -1606,25 +1674,55 @@ func (rr *ResultReader) concludeCommand(commandTag CommandTag, err error) {
// Batch is a collection of queries that can be sent to the PostgreSQL server in a single round-trip.
type Batch struct {
buf []byte
err error
}
// ExecParams appends an ExecParams command to the batch. See PgConn.ExecParams for parameter descriptions.
func (batch *Batch) ExecParams(sql string, paramValues [][]byte, paramOIDs []uint32, paramFormats []int16, resultFormats []int16) {
batch.buf = (&pgproto3.Parse{Query: sql, ParameterOIDs: paramOIDs}).Encode(batch.buf)
if batch.err != nil {
return
}
batch.buf, batch.err = (&pgproto3.Parse{Query: sql, ParameterOIDs: paramOIDs}).Encode(batch.buf)
if batch.err != nil {
return
}
batch.ExecPrepared("", paramValues, paramFormats, resultFormats)
}
// ExecPrepared appends an ExecPrepared e command to the batch. See PgConn.ExecPrepared for parameter descriptions.
func (batch *Batch) ExecPrepared(stmtName string, paramValues [][]byte, paramFormats []int16, resultFormats []int16) {
batch.buf = (&pgproto3.Bind{PreparedStatement: stmtName, ParameterFormatCodes: paramFormats, Parameters: paramValues, ResultFormatCodes: resultFormats}).Encode(batch.buf)
batch.buf = (&pgproto3.Describe{ObjectType: 'P'}).Encode(batch.buf)
batch.buf = (&pgproto3.Execute{}).Encode(batch.buf)
if batch.err != nil {
return
}
batch.buf, batch.err = (&pgproto3.Bind{PreparedStatement: stmtName, ParameterFormatCodes: paramFormats, Parameters: paramValues, ResultFormatCodes: resultFormats}).Encode(batch.buf)
if batch.err != nil {
return
}
batch.buf, batch.err = (&pgproto3.Describe{ObjectType: 'P'}).Encode(batch.buf)
if batch.err != nil {
return
}
batch.buf, batch.err = (&pgproto3.Execute{}).Encode(batch.buf)
if batch.err != nil {
return
}
}
// ExecBatch executes all the queries in batch in a single round-trip. Execution is implicitly transactional unless a
// transaction is already in progress or SQL contains transaction control statements. This is a simpler way of executing
// multiple queries in a single round trip than using pipeline mode.
func (pgConn *PgConn) ExecBatch(ctx context.Context, batch *Batch) *MultiResultReader {
if batch.err != nil {
return &MultiResultReader{
closed: true,
err: batch.err,
}
}
if err := pgConn.lock(); err != nil {
return &MultiResultReader{
closed: true,
@@ -1650,7 +1748,13 @@ func (pgConn *PgConn) ExecBatch(ctx context.Context, batch *Batch) *MultiResultR
pgConn.contextWatcher.Watch(ctx)
}
batch.buf = (&pgproto3.Sync{}).Encode(batch.buf)
batch.buf, batch.err = (&pgproto3.Sync{}).Encode(batch.buf)
if batch.err != nil {
multiResult.closed = true
multiResult.err = batch.err
pgConn.unlock()
return multiResult
}
pgConn.enterPotentialWriteReadDeadlock()
defer pgConn.exitPotentialWriteReadDeadlock()
@@ -1732,10 +1836,16 @@ func (pgConn *PgConn) enterPotentialWriteReadDeadlock() {
// exitPotentialWriteReadDeadlock must be called after a call to enterPotentialWriteReadDeadlock.
func (pgConn *PgConn) exitPotentialWriteReadDeadlock() {
// The state of the timer is not relevant upon exiting the potential slow write. It may both
// fire (due to a slow write), or not fire (due to a fast write).
_ = pgConn.slowWriteTimer.Stop()
pgConn.bgReader.Stop()
if !pgConn.slowWriteTimer.Stop() {
// The timer starts its function in a separate goroutine. It is necessary to ensure the background reader has
// started before calling Stop. Otherwise, the background reader may not be stopped. That on its own is not a
// serious problem. But what is a serious problem is that the background reader may start at an inopportune time in
// a subsequent query. For example, if a subsequent query was canceled then a deadline may be set on the net.Conn to
// interrupt an in-progress read. After the read is interrupted, but before the deadline is cleared, the background
// reader could start and read a deadline error. Then the next query would receive the an unexpected deadline error.
<-pgConn.bgReaderStarted
pgConn.bgReader.Stop()
}
}
func (pgConn *PgConn) flushWithPotentialWriteReadDeadlock() error {
@@ -1764,7 +1874,7 @@ func (pgConn *PgConn) SyncConn(ctx context.Context) error {
}
}
// This should never happen. Only way I can imagine this occuring is if the server is constantly sending data such as
// This should never happen. Only way I can imagine this occurring is if the server is constantly sending data such as
// LISTEN/NOTIFY or log notifications such that we never can get an empty buffer.
return errors.New("SyncConn: conn never synchronized")
}
@@ -1830,8 +1940,14 @@ func Construct(hc *HijackedConn) (*PgConn, error) {
pgConn.contextWatcher = newContextWatcher(pgConn.conn)
pgConn.bgReader = bgreader.New(pgConn.conn)
pgConn.slowWriteTimer = time.AfterFunc(time.Duration(math.MaxInt64), pgConn.bgReader.Start)
pgConn.slowWriteTimer = time.AfterFunc(time.Duration(math.MaxInt64),
func() {
pgConn.bgReader.Start()
pgConn.bgReaderStarted <- struct{}{}
},
)
pgConn.slowWriteTimer.Stop()
pgConn.bgReaderStarted = make(chan struct{})
pgConn.frontend = hc.Config.BuildFrontend(pgConn.bgReader, pgConn.conn)
return pgConn, nil
@@ -1973,6 +2089,13 @@ func (p *Pipeline) Flush() error {
// Sync establishes a synchronization point and flushes the queued requests.
func (p *Pipeline) Sync() error {
if p.closed {
if p.err != nil {
return p.err
}
return errors.New("pipeline closed")
}
p.conn.frontend.SendSync(&pgproto3.Sync{})
err := p.Flush()
if err != nil {
@@ -1989,14 +2112,28 @@ func (p *Pipeline) Sync() error {
// *PipelineSync. If an ErrorResponse is received from the server, results will be nil and err will be a *PgError. If no
// results are available, results and err will both be nil.
func (p *Pipeline) GetResults() (results any, err error) {
if p.closed {
if p.err != nil {
return nil, p.err
}
return nil, errors.New("pipeline closed")
}
if p.expectedReadyForQueryCount == 0 {
return nil, nil
}
return p.getResults()
}
func (p *Pipeline) getResults() (results any, err error) {
for {
msg, err := p.conn.receiveMessage()
if err != nil {
return nil, err
p.closed = true
p.err = err
p.conn.asyncClose()
return nil, normalizeTimeoutError(p.ctx, err)
}
switch msg := msg.(type) {
@@ -2018,7 +2155,8 @@ func (p *Pipeline) GetResults() (results any, err error) {
case *pgproto3.ParseComplete:
peekedMsg, err := p.conn.peekMessage()
if err != nil {
return nil, err
p.conn.asyncClose()
return nil, normalizeTimeoutError(p.ctx, err)
}
if _, ok := peekedMsg.(*pgproto3.ParameterDescription); ok {
return p.getResultsPrepare()
@@ -2078,6 +2216,7 @@ func (p *Pipeline) Close() error {
if p.closed {
return p.err
}
p.closed = true
if p.pendingSync {
@@ -2090,7 +2229,7 @@ func (p *Pipeline) Close() error {
}
for p.expectedReadyForQueryCount > 0 {
_, err := p.GetResults()
_, err := p.getResults()
if err != nil {
p.err = err
var pgErr *PgError