gotosocial/vendor/github.com/jackc/pgx/v5/pgproto3/trace.go

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package pgproto3
import (
"bytes"
"fmt"
"io"
"strconv"
"strings"
"sync"
"time"
)
// tracer traces the messages send to and from a Backend or Frontend. The format it produces roughly mimics the
// format produced by the libpq C function PQtrace.
type tracer struct {
TracerOptions
mux sync.Mutex
w io.Writer
buf *bytes.Buffer
}
// TracerOptions controls tracing behavior. It is roughly equivalent to the libpq function PQsetTraceFlags.
type TracerOptions struct {
// SuppressTimestamps prevents printing of timestamps.
SuppressTimestamps bool
// RegressMode redacts fields that may be vary between executions.
RegressMode bool
}
func (t *tracer) traceMessage(sender byte, encodedLen int32, msg Message) {
switch msg := msg.(type) {
case *AuthenticationCleartextPassword:
t.traceAuthenticationCleartextPassword(sender, encodedLen, msg)
case *AuthenticationGSS:
t.traceAuthenticationGSS(sender, encodedLen, msg)
case *AuthenticationGSSContinue:
t.traceAuthenticationGSSContinue(sender, encodedLen, msg)
case *AuthenticationMD5Password:
t.traceAuthenticationMD5Password(sender, encodedLen, msg)
case *AuthenticationOk:
t.traceAuthenticationOk(sender, encodedLen, msg)
case *AuthenticationSASL:
t.traceAuthenticationSASL(sender, encodedLen, msg)
case *AuthenticationSASLContinue:
t.traceAuthenticationSASLContinue(sender, encodedLen, msg)
case *AuthenticationSASLFinal:
t.traceAuthenticationSASLFinal(sender, encodedLen, msg)
case *BackendKeyData:
t.traceBackendKeyData(sender, encodedLen, msg)
case *Bind:
t.traceBind(sender, encodedLen, msg)
case *BindComplete:
t.traceBindComplete(sender, encodedLen, msg)
case *CancelRequest:
t.traceCancelRequest(sender, encodedLen, msg)
case *Close:
t.traceClose(sender, encodedLen, msg)
case *CloseComplete:
t.traceCloseComplete(sender, encodedLen, msg)
case *CommandComplete:
t.traceCommandComplete(sender, encodedLen, msg)
case *CopyBothResponse:
t.traceCopyBothResponse(sender, encodedLen, msg)
case *CopyData:
t.traceCopyData(sender, encodedLen, msg)
case *CopyDone:
t.traceCopyDone(sender, encodedLen, msg)
case *CopyFail:
t.traceCopyFail(sender, encodedLen, msg)
case *CopyInResponse:
t.traceCopyInResponse(sender, encodedLen, msg)
case *CopyOutResponse:
t.traceCopyOutResponse(sender, encodedLen, msg)
case *DataRow:
t.traceDataRow(sender, encodedLen, msg)
case *Describe:
t.traceDescribe(sender, encodedLen, msg)
case *EmptyQueryResponse:
t.traceEmptyQueryResponse(sender, encodedLen, msg)
case *ErrorResponse:
t.traceErrorResponse(sender, encodedLen, msg)
case *Execute:
t.TraceQueryute(sender, encodedLen, msg)
case *Flush:
t.traceFlush(sender, encodedLen, msg)
case *FunctionCall:
t.traceFunctionCall(sender, encodedLen, msg)
case *FunctionCallResponse:
t.traceFunctionCallResponse(sender, encodedLen, msg)
case *GSSEncRequest:
t.traceGSSEncRequest(sender, encodedLen, msg)
case *NoData:
t.traceNoData(sender, encodedLen, msg)
case *NoticeResponse:
t.traceNoticeResponse(sender, encodedLen, msg)
case *NotificationResponse:
t.traceNotificationResponse(sender, encodedLen, msg)
case *ParameterDescription:
t.traceParameterDescription(sender, encodedLen, msg)
case *ParameterStatus:
t.traceParameterStatus(sender, encodedLen, msg)
case *Parse:
t.traceParse(sender, encodedLen, msg)
case *ParseComplete:
t.traceParseComplete(sender, encodedLen, msg)
case *PortalSuspended:
t.tracePortalSuspended(sender, encodedLen, msg)
case *Query:
t.traceQuery(sender, encodedLen, msg)
case *ReadyForQuery:
t.traceReadyForQuery(sender, encodedLen, msg)
case *RowDescription:
t.traceRowDescription(sender, encodedLen, msg)
case *SSLRequest:
t.traceSSLRequest(sender, encodedLen, msg)
case *StartupMessage:
t.traceStartupMessage(sender, encodedLen, msg)
case *Sync:
t.traceSync(sender, encodedLen, msg)
case *Terminate:
t.traceTerminate(sender, encodedLen, msg)
default:
t.writeTrace(sender, encodedLen, "Unknown", nil)
}
}
func (t *tracer) traceAuthenticationCleartextPassword(sender byte, encodedLen int32, msg *AuthenticationCleartextPassword) {
t.writeTrace(sender, encodedLen, "AuthenticationCleartextPassword", nil)
}
func (t *tracer) traceAuthenticationGSS(sender byte, encodedLen int32, msg *AuthenticationGSS) {
t.writeTrace(sender, encodedLen, "AuthenticationGSS", nil)
}
func (t *tracer) traceAuthenticationGSSContinue(sender byte, encodedLen int32, msg *AuthenticationGSSContinue) {
t.writeTrace(sender, encodedLen, "AuthenticationGSSContinue", nil)
}
func (t *tracer) traceAuthenticationMD5Password(sender byte, encodedLen int32, msg *AuthenticationMD5Password) {
t.writeTrace(sender, encodedLen, "AuthenticationMD5Password", nil)
}
func (t *tracer) traceAuthenticationOk(sender byte, encodedLen int32, msg *AuthenticationOk) {
t.writeTrace(sender, encodedLen, "AuthenticationOk", nil)
}
func (t *tracer) traceAuthenticationSASL(sender byte, encodedLen int32, msg *AuthenticationSASL) {
t.writeTrace(sender, encodedLen, "AuthenticationSASL", nil)
}
func (t *tracer) traceAuthenticationSASLContinue(sender byte, encodedLen int32, msg *AuthenticationSASLContinue) {
t.writeTrace(sender, encodedLen, "AuthenticationSASLContinue", nil)
}
func (t *tracer) traceAuthenticationSASLFinal(sender byte, encodedLen int32, msg *AuthenticationSASLFinal) {
t.writeTrace(sender, encodedLen, "AuthenticationSASLFinal", nil)
}
func (t *tracer) traceBackendKeyData(sender byte, encodedLen int32, msg *BackendKeyData) {
t.writeTrace(sender, encodedLen, "BackendKeyData", func() {
if t.RegressMode {
t.buf.WriteString("\t NNNN NNNN")
} else {
fmt.Fprintf(t.buf, "\t %d %d", msg.ProcessID, msg.SecretKey)
}
})
}
func (t *tracer) traceBind(sender byte, encodedLen int32, msg *Bind) {
t.writeTrace(sender, encodedLen, "Bind", func() {
fmt.Fprintf(t.buf, "\t %s %s %d", traceDoubleQuotedString([]byte(msg.DestinationPortal)), traceDoubleQuotedString([]byte(msg.PreparedStatement)), len(msg.ParameterFormatCodes))
for _, fc := range msg.ParameterFormatCodes {
fmt.Fprintf(t.buf, " %d", fc)
}
fmt.Fprintf(t.buf, " %d", len(msg.Parameters))
for _, p := range msg.Parameters {
fmt.Fprintf(t.buf, " %s", traceSingleQuotedString(p))
}
fmt.Fprintf(t.buf, " %d", len(msg.ResultFormatCodes))
for _, fc := range msg.ResultFormatCodes {
fmt.Fprintf(t.buf, " %d", fc)
}
})
}
func (t *tracer) traceBindComplete(sender byte, encodedLen int32, msg *BindComplete) {
t.writeTrace(sender, encodedLen, "BindComplete", nil)
}
func (t *tracer) traceCancelRequest(sender byte, encodedLen int32, msg *CancelRequest) {
t.writeTrace(sender, encodedLen, "CancelRequest", nil)
}
func (t *tracer) traceClose(sender byte, encodedLen int32, msg *Close) {
t.writeTrace(sender, encodedLen, "Close", nil)
}
func (t *tracer) traceCloseComplete(sender byte, encodedLen int32, msg *CloseComplete) {
t.writeTrace(sender, encodedLen, "CloseComplete", nil)
}
func (t *tracer) traceCommandComplete(sender byte, encodedLen int32, msg *CommandComplete) {
t.writeTrace(sender, encodedLen, "CommandComplete", func() {
fmt.Fprintf(t.buf, "\t %s", traceDoubleQuotedString(msg.CommandTag))
})
}
func (t *tracer) traceCopyBothResponse(sender byte, encodedLen int32, msg *CopyBothResponse) {
t.writeTrace(sender, encodedLen, "CopyBothResponse", nil)
}
func (t *tracer) traceCopyData(sender byte, encodedLen int32, msg *CopyData) {
t.writeTrace(sender, encodedLen, "CopyData", nil)
}
func (t *tracer) traceCopyDone(sender byte, encodedLen int32, msg *CopyDone) {
t.writeTrace(sender, encodedLen, "CopyDone", nil)
}
func (t *tracer) traceCopyFail(sender byte, encodedLen int32, msg *CopyFail) {
t.writeTrace(sender, encodedLen, "CopyFail", func() {
fmt.Fprintf(t.buf, "\t %s", traceDoubleQuotedString([]byte(msg.Message)))
})
}
func (t *tracer) traceCopyInResponse(sender byte, encodedLen int32, msg *CopyInResponse) {
t.writeTrace(sender, encodedLen, "CopyInResponse", nil)
}
func (t *tracer) traceCopyOutResponse(sender byte, encodedLen int32, msg *CopyOutResponse) {
t.writeTrace(sender, encodedLen, "CopyOutResponse", nil)
}
func (t *tracer) traceDataRow(sender byte, encodedLen int32, msg *DataRow) {
t.writeTrace(sender, encodedLen, "DataRow", func() {
fmt.Fprintf(t.buf, "\t %d", len(msg.Values))
for _, v := range msg.Values {
if v == nil {
t.buf.WriteString(" -1")
} else {
fmt.Fprintf(t.buf, " %d %s", len(v), traceSingleQuotedString(v))
}
}
})
}
func (t *tracer) traceDescribe(sender byte, encodedLen int32, msg *Describe) {
t.writeTrace(sender, encodedLen, "Describe", func() {
fmt.Fprintf(t.buf, "\t %c %s", msg.ObjectType, traceDoubleQuotedString([]byte(msg.Name)))
})
}
func (t *tracer) traceEmptyQueryResponse(sender byte, encodedLen int32, msg *EmptyQueryResponse) {
t.writeTrace(sender, encodedLen, "EmptyQueryResponse", nil)
}
func (t *tracer) traceErrorResponse(sender byte, encodedLen int32, msg *ErrorResponse) {
t.writeTrace(sender, encodedLen, "ErrorResponse", nil)
}
func (t *tracer) TraceQueryute(sender byte, encodedLen int32, msg *Execute) {
t.writeTrace(sender, encodedLen, "Execute", func() {
fmt.Fprintf(t.buf, "\t %s %d", traceDoubleQuotedString([]byte(msg.Portal)), msg.MaxRows)
})
}
func (t *tracer) traceFlush(sender byte, encodedLen int32, msg *Flush) {
t.writeTrace(sender, encodedLen, "Flush", nil)
}
func (t *tracer) traceFunctionCall(sender byte, encodedLen int32, msg *FunctionCall) {
t.writeTrace(sender, encodedLen, "FunctionCall", nil)
}
func (t *tracer) traceFunctionCallResponse(sender byte, encodedLen int32, msg *FunctionCallResponse) {
t.writeTrace(sender, encodedLen, "FunctionCallResponse", nil)
}
func (t *tracer) traceGSSEncRequest(sender byte, encodedLen int32, msg *GSSEncRequest) {
t.writeTrace(sender, encodedLen, "GSSEncRequest", nil)
}
func (t *tracer) traceNoData(sender byte, encodedLen int32, msg *NoData) {
t.writeTrace(sender, encodedLen, "NoData", nil)
}
func (t *tracer) traceNoticeResponse(sender byte, encodedLen int32, msg *NoticeResponse) {
t.writeTrace(sender, encodedLen, "NoticeResponse", nil)
}
func (t *tracer) traceNotificationResponse(sender byte, encodedLen int32, msg *NotificationResponse) {
t.writeTrace(sender, encodedLen, "NotificationResponse", func() {
fmt.Fprintf(t.buf, "\t %d %s %s", msg.PID, traceDoubleQuotedString([]byte(msg.Channel)), traceDoubleQuotedString([]byte(msg.Payload)))
})
}
func (t *tracer) traceParameterDescription(sender byte, encodedLen int32, msg *ParameterDescription) {
t.writeTrace(sender, encodedLen, "ParameterDescription", nil)
}
func (t *tracer) traceParameterStatus(sender byte, encodedLen int32, msg *ParameterStatus) {
t.writeTrace(sender, encodedLen, "ParameterStatus", func() {
fmt.Fprintf(t.buf, "\t %s %s", traceDoubleQuotedString([]byte(msg.Name)), traceDoubleQuotedString([]byte(msg.Value)))
})
}
func (t *tracer) traceParse(sender byte, encodedLen int32, msg *Parse) {
t.writeTrace(sender, encodedLen, "Parse", func() {
fmt.Fprintf(t.buf, "\t %s %s %d", traceDoubleQuotedString([]byte(msg.Name)), traceDoubleQuotedString([]byte(msg.Query)), len(msg.ParameterOIDs))
for _, oid := range msg.ParameterOIDs {
fmt.Fprintf(t.buf, " %d", oid)
}
})
}
func (t *tracer) traceParseComplete(sender byte, encodedLen int32, msg *ParseComplete) {
t.writeTrace(sender, encodedLen, "ParseComplete", nil)
}
func (t *tracer) tracePortalSuspended(sender byte, encodedLen int32, msg *PortalSuspended) {
t.writeTrace(sender, encodedLen, "PortalSuspended", nil)
}
func (t *tracer) traceQuery(sender byte, encodedLen int32, msg *Query) {
t.writeTrace(sender, encodedLen, "Query", func() {
fmt.Fprintf(t.buf, "\t %s", traceDoubleQuotedString([]byte(msg.String)))
})
}
func (t *tracer) traceReadyForQuery(sender byte, encodedLen int32, msg *ReadyForQuery) {
t.writeTrace(sender, encodedLen, "ReadyForQuery", func() {
fmt.Fprintf(t.buf, "\t %c", msg.TxStatus)
})
}
func (t *tracer) traceRowDescription(sender byte, encodedLen int32, msg *RowDescription) {
t.writeTrace(sender, encodedLen, "RowDescription", func() {
fmt.Fprintf(t.buf, "\t %d", len(msg.Fields))
for _, fd := range msg.Fields {
fmt.Fprintf(t.buf, ` %s %d %d %d %d %d %d`, traceDoubleQuotedString(fd.Name), fd.TableOID, fd.TableAttributeNumber, fd.DataTypeOID, fd.DataTypeSize, fd.TypeModifier, fd.Format)
}
})
}
func (t *tracer) traceSSLRequest(sender byte, encodedLen int32, msg *SSLRequest) {
t.writeTrace(sender, encodedLen, "SSLRequest", nil)
}
func (t *tracer) traceStartupMessage(sender byte, encodedLen int32, msg *StartupMessage) {
t.writeTrace(sender, encodedLen, "StartupMessage", nil)
}
func (t *tracer) traceSync(sender byte, encodedLen int32, msg *Sync) {
t.writeTrace(sender, encodedLen, "Sync", nil)
}
func (t *tracer) traceTerminate(sender byte, encodedLen int32, msg *Terminate) {
t.writeTrace(sender, encodedLen, "Terminate", nil)
}
func (t *tracer) writeTrace(sender byte, encodedLen int32, msgType string, writeDetails func()) {
t.mux.Lock()
defer t.mux.Unlock()
defer func() {
if t.buf.Cap() > 1024 {
t.buf = &bytes.Buffer{}
} else {
t.buf.Reset()
}
}()
if !t.SuppressTimestamps {
now := time.Now()
t.buf.WriteString(now.Format("2006-01-02 15:04:05.000000"))
t.buf.WriteByte('\t')
}
t.buf.WriteByte(sender)
t.buf.WriteByte('\t')
t.buf.WriteString(msgType)
t.buf.WriteByte('\t')
t.buf.WriteString(strconv.FormatInt(int64(encodedLen), 10))
if writeDetails != nil {
writeDetails()
}
t.buf.WriteByte('\n')
t.buf.WriteTo(t.w)
}
// traceDoubleQuotedString returns t.buf as a double-quoted string without any escaping. It is roughly equivalent to
// pqTraceOutputString in libpq.
func traceDoubleQuotedString(buf []byte) string {
return `"` + string(buf) + `"`
}
// traceSingleQuotedString returns buf as a single-quoted string with non-printable characters hex-escaped. It is
// roughly equivalent to pqTraceOutputNchar in libpq.
func traceSingleQuotedString(buf []byte) string {
sb := &strings.Builder{}
sb.WriteByte('\'')
for _, b := range buf {
if b < 32 || b > 126 {
fmt.Fprintf(sb, `\x%x`, b)
} else {
sb.WriteByte(b)
}
}
sb.WriteByte('\'')
return sb.String()
}