119 lines
3.5 KiB
Go
119 lines
3.5 KiB
Go
/*
|
|
*
|
|
* Copyright 2015, Google Inc.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are
|
|
* met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above
|
|
* copyright notice, this list of conditions and the following disclaimer
|
|
* in the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* * Neither the name of Google Inc. nor the names of its
|
|
* contributors may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
*/
|
|
|
|
package grpc
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"io"
|
|
"net"
|
|
"strings"
|
|
"time"
|
|
|
|
"golang.org/x/net/trace"
|
|
)
|
|
|
|
// EnableTracing controls whether to trace RPCs using the golang.org/x/net/trace package.
|
|
// This should only be set before any RPCs are sent or received by this program.
|
|
var EnableTracing = true
|
|
|
|
// methodFamily returns the trace family for the given method.
|
|
// It turns "/pkg.Service/GetFoo" into "pkg.Service".
|
|
func methodFamily(m string) string {
|
|
m = strings.TrimPrefix(m, "/") // remove leading slash
|
|
if i := strings.Index(m, "/"); i >= 0 {
|
|
m = m[:i] // remove everything from second slash
|
|
}
|
|
if i := strings.LastIndex(m, "."); i >= 0 {
|
|
m = m[i+1:] // cut down to last dotted component
|
|
}
|
|
return m
|
|
}
|
|
|
|
// traceInfo contains tracing information for an RPC.
|
|
type traceInfo struct {
|
|
tr trace.Trace
|
|
firstLine firstLine
|
|
}
|
|
|
|
// firstLine is the first line of an RPC trace.
|
|
type firstLine struct {
|
|
client bool // whether this is a client (outgoing) RPC
|
|
remoteAddr net.Addr
|
|
deadline time.Duration // may be zero
|
|
}
|
|
|
|
func (f *firstLine) String() string {
|
|
var line bytes.Buffer
|
|
io.WriteString(&line, "RPC: ")
|
|
if f.client {
|
|
io.WriteString(&line, "to")
|
|
} else {
|
|
io.WriteString(&line, "from")
|
|
}
|
|
fmt.Fprintf(&line, " %v deadline:", f.remoteAddr)
|
|
if f.deadline != 0 {
|
|
fmt.Fprint(&line, f.deadline)
|
|
} else {
|
|
io.WriteString(&line, "none")
|
|
}
|
|
return line.String()
|
|
}
|
|
|
|
// payload represents an RPC request or response payload.
|
|
type payload struct {
|
|
sent bool // whether this is an outgoing payload
|
|
msg interface{} // e.g. a proto.Message
|
|
// TODO(dsymonds): add stringifying info to codec, and limit how much we hold here?
|
|
}
|
|
|
|
func (p payload) String() string {
|
|
if p.sent {
|
|
return fmt.Sprintf("sent: %v", p.msg)
|
|
}
|
|
return fmt.Sprintf("recv: %v", p.msg)
|
|
}
|
|
|
|
type fmtStringer struct {
|
|
format string
|
|
a []interface{}
|
|
}
|
|
|
|
func (f *fmtStringer) String() string {
|
|
return fmt.Sprintf(f.format, f.a...)
|
|
}
|
|
|
|
type stringer string
|
|
|
|
func (s stringer) String() string { return string(s) }
|