Commit 9de107fe authored by Kirill Smelkov's avatar Kirill Smelkov

go/zodb/fs1tools: Dump

Add various FileStorage-specific dump commands with output being
bit-to-bit exact with the following ZODB/py FileStorage tools:

- fsdump.py
- fsdump.py (verbose dumper)
- fstail.py

Please see the patch for links about this dump formats.
parent db167e69
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// Copyright (C) 2017 Nexedi SA and Contributors.
// Kirill Smelkov <kirr@nexedi.com>
//
// This program is free software: you can Use, Study, Modify and Redistribute
// it under the terms of the GNU General Public License version 3, or (at your
// option) any later version, as published by the Free Software Foundation.
//
// You can also Link and Combine this program with other software covered by
// the terms of any of the Free Software licenses or any of the Open Source
// Initiative approved licenses and Convey the resulting work. Corresponding
// source of such a combination shall include the source code for all other
// software used.
//
// This program is distributed WITHOUT ANY WARRANTY; without even the implied
// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
//
// See COPYING file for full licensing terms.
// See https://www.nexedi.com/licensing for rationale and options.
package fs1tools
//go:generate sh -c "python2 -m ZODB.scripts.fstail -n 1000000 ../testdata/1.fs >testdata/1.fstail.ok"
//go:generate sh -c "python2 -c 'from ZODB.FileStorage import fsdump; fsdump.main()' ../testdata/1.fs >testdata/1.fsdump.ok"
//go:generate sh -c "python2 -c 'from ZODB.FileStorage.fsdump import Dumper; import sys; d = Dumper(sys.argv[1]); d.dump()' ../testdata/1.fs >testdata/1.fsdumpv.ok"
// fstail.py crashes on empty.fs . The output should be empty file so generate it with just echo.
////go:generate sh -c "python2 -m ZODB.scripts.fstail -n 1000000 ../testdata/empty.fs >testdata/empty.fstail.ok"
//go:generate sh -c "echo -n >testdata/empty.fstail.ok"
//go:generate sh -c "python2 -c 'from ZODB.FileStorage import fsdump; fsdump.main()' ../testdata/empty.fs >testdata/empty.fsdump.ok"
//go:generate sh -c "python2 -c 'from ZODB.FileStorage.fsdump import Dumper; import sys; d = Dumper(sys.argv[1]); d.dump()' ../testdata/empty.fs >testdata/empty.fsdumpv.ok"
import (
"bytes"
"fmt"
"io/ioutil"
"testing"
"lab.nexedi.com/kirr/neo/go/zodb/storage/fs1"
"github.com/kylelemons/godebug/diff"
)
func loadFile(t *testing.T, path string) string {
data, err := ioutil.ReadFile(path)
if err != nil {
t.Fatal(err)
}
return string(data)
}
func testDump(t *testing.T, dir fs1.IterDir, d Dumper) {
testv := []string{"1", "empty"}
for _, tt := range testv {
t.Run("db=" + tt, func(t *testing.T) {
buf := bytes.Buffer{}
err := Dump(&buf, fmt.Sprintf("../testdata/%s.fs", tt), dir, d)
if err != nil {
t.Fatalf("%s: %v", d.DumperName(), err)
}
dumpOk := loadFile(t, fmt.Sprintf("testdata/%s.%s.ok", tt, d.DumperName()))
if dumpOk != buf.String() {
t.Errorf("%s: dump different:\n%v", d.DumperName(), diff.Diff(dumpOk, buf.String()))
}
})
}
}
func TestFsDump(t *testing.T) { testDump(t, fs1.IterForward, &DumperFsDump{}) }
func TestFsDumpv(t *testing.T) { testDump(t, fs1.IterForward, &DumperFsDumpVerbose{}) }
func TestFsTail(t *testing.T) { testDump(t, fs1.IterBackward, &DumperFsTail{Ntxn: 1000000}) }
func BenchmarkTail(b *testing.B) {
// FIXME small testdata/1.fs is not representative for benchmarking
for i := 0; i < b.N; i++ {
err := Dump(ioutil.Discard, "../testdata/1.fs", fs1.IterBackward, &DumperFsTail{Ntxn: 1000000})
if err != nil {
b.Fatal(err)
}
}
}
......@@ -23,6 +23,8 @@ package fs1tools
import "lab.nexedi.com/kirr/go123/prog"
var commands = prog.CommandRegistry{
{"dump", dumpSummary, dumpUsage, dumpMain},
{"tail", tailSummary, tailUsage, tailMain},
}
var helpTopics = prog.HelpRegistry{
......
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************************************************************
file identifier: 'FS21'
FS21
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