You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
118 lines
2.8 KiB
118 lines
2.8 KiB
8 years ago
|
// Copyright 2012 Gary Burd
|
||
|
|
//
|
||
|
|
// 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 redis
|
||
|
|
|
||
|
|
import (
|
||
|
|
"bytes"
|
||
|
|
"fmt"
|
||
|
|
"log"
|
||
|
|
)
|
||
|
|
|
||
|
|
// NewLoggingConn returns a logging wrapper around a connection.
|
||
|
|
func NewLoggingConn(conn Conn, logger *log.Logger, prefix string) Conn {
|
||
|
|
if prefix != "" {
|
||
|
|
prefix = prefix + "."
|
||
|
|
}
|
||
|
|
return &loggingConn{conn, logger, prefix}
|
||
|
|
}
|
||
|
|
|
||
|
|
type loggingConn struct {
|
||
|
|
Conn
|
||
|
|
logger *log.Logger
|
||
|
|
prefix string
|
||
|
|
}
|
||
|
|
|
||
|
|
func (c *loggingConn) Close() error {
|
||
|
|
err := c.Conn.Close()
|
||
|
|
var buf bytes.Buffer
|
||
|
|
fmt.Fprintf(&buf, "%sClose() -> (%v)", c.prefix, err)
|
||
|
|
c.logger.Output(2, buf.String())
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
|
||
|
|
func (c *loggingConn) printValue(buf *bytes.Buffer, v interface{}) {
|
||
|
|
const chop = 32
|
||
|
|
switch v := v.(type) {
|
||
|
|
case []byte:
|
||
|
|
if len(v) > chop {
|
||
|
|
fmt.Fprintf(buf, "%q...", v[:chop])
|
||
|
|
} else {
|
||
|
|
fmt.Fprintf(buf, "%q", v)
|
||
|
|
}
|
||
|
|
case string:
|
||
|
|
if len(v) > chop {
|
||
|
|
fmt.Fprintf(buf, "%q...", v[:chop])
|
||
|
|
} else {
|
||
|
|
fmt.Fprintf(buf, "%q", v)
|
||
|
|
}
|
||
|
|
case []interface{}:
|
||
|
|
if len(v) == 0 {
|
||
|
|
buf.WriteString("[]")
|
||
|
|
} else {
|
||
|
|
sep := "["
|
||
|
|
fin := "]"
|
||
|
|
if len(v) > chop {
|
||
|
|
v = v[:chop]
|
||
|
|
fin = "...]"
|
||
|
|
}
|
||
|
|
for _, vv := range v {
|
||
|
|
buf.WriteString(sep)
|
||
|
|
c.printValue(buf, vv)
|
||
|
|
sep = ", "
|
||
|
|
}
|
||
|
|
buf.WriteString(fin)
|
||
|
|
}
|
||
|
|
default:
|
||
|
|
fmt.Fprint(buf, v)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (c *loggingConn) print(method, commandName string, args []interface{}, reply interface{}, err error) {
|
||
|
|
var buf bytes.Buffer
|
||
|
|
fmt.Fprintf(&buf, "%s%s(", c.prefix, method)
|
||
|
|
if method != "Receive" {
|
||
|
|
buf.WriteString(commandName)
|
||
|
|
for _, arg := range args {
|
||
|
|
buf.WriteString(", ")
|
||
|
|
c.printValue(&buf, arg)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
buf.WriteString(") -> (")
|
||
|
|
if method != "Send" {
|
||
|
|
c.printValue(&buf, reply)
|
||
|
|
buf.WriteString(", ")
|
||
|
|
}
|
||
|
|
fmt.Fprintf(&buf, "%v)", err)
|
||
|
|
c.logger.Output(3, buf.String())
|
||
|
|
}
|
||
|
|
|
||
|
|
func (c *loggingConn) Do(commandName string, args ...interface{}) (interface{}, error) {
|
||
|
|
reply, err := c.Conn.Do(commandName, args...)
|
||
|
|
c.print("Do", commandName, args, reply, err)
|
||
|
|
return reply, err
|
||
|
|
}
|
||
|
|
|
||
|
|
func (c *loggingConn) Send(commandName string, args ...interface{}) error {
|
||
|
|
err := c.Conn.Send(commandName, args...)
|
||
|
|
c.print("Send", commandName, args, nil, err)
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
|
||
|
|
func (c *loggingConn) Receive() (interface{}, error) {
|
||
|
|
reply, err := c.Conn.Receive()
|
||
|
|
c.print("Receive", "", nil, reply, err)
|
||
|
|
return reply, err
|
||
|
|
}
|