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add a fast prototype that basically build (pingcap#13)
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* save the code

* Refine the Writer interface and define the tableDumper interface

* output prototype

* add context

* change to the iterator API

* add basic commandline args

* add test for WriteInsert

* add FileSystemWriter and SizedWriter

* address comment

* add DummyLogger

* mkdir automatically

* change string to nullstring

* make test passed

* go fmt

* remove error handler

* remove linesplitter config

* not to create file when the table is empty

* move *.go files to the v4/export directory

* tidy up

Co-authored-by: Tanner <[email protected]>
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@tiancaiamao @tangenta @kennytm
2 people authored and kennytm committed Dec 25, 2019
1 parent 9b85c51 commit 835fa7f
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2 changes: 2 additions & 0 deletions .gitignore
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.DS_Store
bin/

.idea
2 changes: 1 addition & 1 deletion Makefile
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Expand Up @@ -15,7 +15,7 @@ endif
build: bin/dumpling

bin/%: cmd/%/main.go $(wildcard v4/**/*.go)
$(GO) build $(GOFLAGS) -o $@ $<
$(GO) build $(GOFLAGS) -tags codes -o $@ $<

test:
$(GO) list ./... | xargs $(GO) test $(GOFLAGS)
61 changes: 61 additions & 0 deletions cmd/dumpling/main.go
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Expand Up @@ -14,9 +14,70 @@
package main

import (
"flag"
"fmt"
_ "net/http/pprof"
"os"

"github.com/pingcap/dumpling/v4/cli"
"github.com/pingcap/dumpling/v4/export"
)

var (
database string
host string
user string
port int
password string
threads int
outputDir string
fileSize uint64
)

func init() {
flag.StringVar(&database, "database", "", "Database to dump")
flag.StringVar(&database, "B", "", "Database to dump")

flag.StringVar(&host, "h", "127.0.0.1", "The host to connect to")
flag.StringVar(&host, "host", "127.0.0.1", "The host to connect to")

flag.StringVar(&user, "user", "root", "Username with privileges to run the dump")
flag.StringVar(&user, "u", "root", "Username with privileges to run the dump")

flag.IntVar(&port, "port", 4000, "TCP/IP port to connect to")
flag.IntVar(&port, "P", 4000, "TCP/IP port to connect to")

flag.StringVar(&password, "password", "", "User password")
flag.StringVar(&password, "p", "", "User password")

flag.IntVar(&threads, "threads", 4, "Number of goroutines to use, default 4")
flag.IntVar(&threads, "t", 4, "Number of goroutines to use, default 4")

flag.Uint64Var(&fileSize, "F", export.UnspecifiedSize, "The approximate size of output file")
flag.Uint64Var(&fileSize, "filesize", export.UnspecifiedSize, "The approximate size of output file")

flag.StringVar(&outputDir, "output", ".", "Output directory")
flag.StringVar(&outputDir, "o", ".", "Output directory")
}

func main() {
flag.Parse()
println(cli.LongVersion())

conf := export.DefaultConfig()
conf.Database = database
conf.Host = host
conf.User = user
conf.Port = port
conf.Password = password
conf.Threads = threads
conf.FileSize = fileSize
conf.OutputDirPath = outputDir

err := export.Dump(conf)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
return
}
5 changes: 5 additions & 0 deletions go.mod
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module github.com/pingcap/dumpling

require (
github.com/go-sql-driver/mysql v1.4.1
github.com/pingcap/check v0.0.0-20191107115940-caf2b9e6ccf4
)

go 1.13
71 changes: 71 additions & 0 deletions go.sum
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github.com/go-sql-driver/mysql v1.4.1 h1:g24URVg0OFbNUTx9qqY1IRZ9D9z3iPyi5zKhQZpNwpA=
github.com/go-sql-driver/mysql v1.4.1/go.mod h1:zAC/RDZ24gD3HViQzih4MyKcchzm+sOG5ZlKdlhCg5w=
github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
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github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
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55 changes: 55 additions & 0 deletions v4/export/config.go
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package export

import (
"fmt"
)

type Config struct {
Database string
Host string
User string
Port int
Password string
Threads int

Logger Logger
FileSize uint64
OutputDirPath string
}

func DefaultConfig() *Config {
return &Config{
Database: "",
Host: "127.0.0.1",
User: "root",
Port: 3306,
Password: "",
Threads: 4,
Logger: &DummyLogger{},
FileSize: UnspecifiedSize,
OutputDirPath: ".",
}
}

func (conf *Config) getDSN(db string) string {
return fmt.Sprintf("%s:%s@tcp(%s:%d)/%s", conf.User, conf.Password, conf.Host, conf.Port, db)
}

func extractOutputConfig(conf *Config) *Config {
return &Config{
Logger: conf.Logger,
FileSize: conf.FileSize,
OutputDirPath: conf.OutputDirPath,
}
}

type WriteConfig struct {
// Logger is used to log the export routine.
Logger Logger
// Output size limit in bytes.
OutputSize int
// OutputDirPath is the directory to output.
OutputDirPath string
}

const UnspecifiedSize = 0
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