forked from xueqiu/rdr
/
main.go
148 lines (136 loc) · 4.13 KB
/
main.go
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// Copyright 2017 XUEQIU.COM
//
// 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 main
import (
"os"
"github.com/urfave/cli"
"fmt"
"github.com/xueqiu/rdr/decoder"
"github.com/xueqiu/rdr/dump"
"strconv"
)
//go:generate go-bindata -prefix "static/" -o=static/static.go -pkg=static -ignore static.go static/...
//go:generate go-bindata -prefix "views/" -o=views/views.go -pkg=views -ignore views.go views/...
// keys is function for command `keys`
// output all keys in rdbfile(s) get from args
func keys(c *cli.Context) {
if c.NArg() < 1 {
fmt.Fprintln(c.App.ErrWriter, "keys requires at least 1 argument")
cli.ShowCommandHelp(c, "keys")
return
}
for _, filepath := range c.Args() {
decoder := decoder.NewDecoder()
go dump.Decode(c, decoder, filepath)
for e := range decoder.Entries {
fmt.Fprintf(c.App.Writer, "%v\n", e.Key)
}
}
}
func topkey(c *cli.Context) {
var (
keysNums int = 50
keysDelimiter string = "[:DMR:]"
minSize uint64
filepath string
)
if c.NArg() == 1 {
filepath = c.Args()[0]
} else if c.NArg() == 2 {
filepath = c.Args()[0]
keysNums, _ = strconv.Atoi(c.Args()[1])
} else if c.NArg() == 3 {
filepath = c.Args()[0]
keysNums, _ = strconv.Atoi(c.Args()[1])
minSize, _ = strconv.ParseUint(c.Args()[2], 10, 64)
} else if c.NArg() == 4 {
keysDelimiter = c.Args()[3]
minSize, _ = strconv.ParseUint(c.Args()[2], 10, 64)
keysNums, _ = strconv.Atoi(c.Args()[1])
filepath = c.Args()[0]
} else if c.NArg() == 5 {
logfile, err := os.OpenFile(c.Args()[4], os.O_RDWR|os.O_APPEND|os.O_CREATE, 0644)
if err != nil {
fmt.Fprintln(c.App.ErrWriter, "%v\n", err)
cli.ShowCommandHelp(c, "topkeys")
return
}
c.App.Writer = logfile
keysDelimiter = c.Args()[3]
minSize, _ = strconv.ParseUint(c.Args()[2], 10, 64)
keysNums, _ = strconv.Atoi(c.Args()[1])
filepath = c.Args()[0]
} else {
fmt.Fprintln(c.App.ErrWriter, "keys requires at least 1 argument")
cli.ShowCommandHelp(c, "topkey")
return
}
decoder := decoder.NewDecoder()
go dump.Decode(c, decoder, filepath)
//init Counter
counter := dump.NewCounter()
counter.Count(decoder.Entries)
topKeyList := counter.GetLargestEntries(keysNums)
for i := 0; i < len(topKeyList); i++ {
if topKeyList[i].Bytes >= minSize {
fmt.Fprintf(c.App.Writer, "%v%s%v%s%v\n", topKeyList[i].Key, keysDelimiter, topKeyList[i].Bytes, keysDelimiter, topKeyList[i].Type)
}
}
}
func main() {
app := cli.NewApp()
app.Name = "rdr"
app.Usage = "a tool to parse redis rdbfile"
app.Version = "v0.0.1"
app.Writer = os.Stdout
app.ErrWriter = os.Stderr
app.Commands = []cli.Command{
cli.Command{
Name: "dump",
Usage: "dump statistical information of rdbfile to STDOUT",
ArgsUsage: "FILE1 [FILE2] [FILE3]...",
Action: dump.ToCliWriter,
},
cli.Command{
Name: "show",
Usage: "show statistical information of rdbfile by webpage",
ArgsUsage: "DIR1 [DIR2] [DIR3] or FILE1 [FILE2] [FILE3]...",
Flags: []cli.Flag{
cli.UintFlag{
Name: "port, p",
Value: 8080,
Usage: "Port for rdr to listen",
},
},
Action: dump.Show,
},
cli.Command{
Name: "keys",
Usage: "get all keys from rdbfile",
ArgsUsage: "FILE1 [FILE2] [FILE3]...",
Action: keys,
},
cli.Command{
Name: "topkey",
Usage: "get the top list of key size from rdbfile",
ArgsUsage: "RDBFILE | RDBFILE TOPNUMS | RDBFILE TOPNUMS MINSIZE | RDBFILE DELIMITER TOPNUMS STDOUTFILE",
Action: topkey,
},
}
app.CommandNotFound = func(c *cli.Context, command string) {
fmt.Fprintf(c.App.ErrWriter, "command %q can not be found.\n", command)
cli.ShowAppHelp(c)
}
app.Run(os.Args)
}