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Steffen Siering
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Jul 8, 2020
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// Licensed to Elasticsearch B.V. under one or more contributor | ||
// license agreements. See the NOTICE file distributed with | ||
// this work for additional information regarding copyright | ||
// ownership. Elasticsearch B.V. licenses this file to you 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. | ||
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package memlog | ||
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import ( | ||
"io" | ||
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"github.com/elastic/go-structform/gotype" | ||
"github.com/elastic/go-structform/json" | ||
) | ||
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type jsonEncoder struct { | ||
out io.Writer | ||
folder *gotype.Iterator | ||
} | ||
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func newJSONEncoder(out io.Writer) *jsonEncoder { | ||
e := &jsonEncoder{out: out} | ||
e.reset() | ||
return e | ||
} | ||
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func (e *jsonEncoder) reset() { | ||
visitor := json.NewVisitor(e.out) | ||
visitor.SetEscapeHTML(false) | ||
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var err error | ||
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// create new encoder with custom time.Time encoding | ||
e.folder, err = gotype.NewIterator(visitor) | ||
if err != nil { | ||
panic(err) | ||
} | ||
} | ||
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func (e *jsonEncoder) Encode(v interface{}) error { | ||
return e.folder.Fold(v) | ||
} |
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// Licensed to Elasticsearch B.V. under one or more contributor | ||
// license agreements. See the NOTICE file distributed with | ||
// this work for additional information regarding copyright | ||
// ownership. Elasticsearch B.V. licenses this file to you 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. | ||
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package memlog | ||
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import ( | ||
"encoding/json" | ||
"io" | ||
"io/ioutil" | ||
"math" | ||
"os" | ||
"path/filepath" | ||
"testing" | ||
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"github.com/stretchr/testify/assert" | ||
"github.com/stretchr/testify/require" | ||
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"github.com/elastic/beats/v7/libbeat/logp" | ||
"github.com/elastic/beats/v7/libbeat/statestore" | ||
"github.com/elastic/beats/v7/libbeat/statestore/backend" | ||
"github.com/elastic/beats/v7/libbeat/statestore/internal/storecompliance" | ||
) | ||
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func init() { | ||
logp.DevelopmentSetup() | ||
} | ||
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func TestCompliance_Default(t *testing.T) { | ||
storecompliance.TestBackendCompliance(t, func(testPath string) (backend.Registry, error) { | ||
return New(logp.NewLogger("test"), Settings{Root: testPath}) | ||
}) | ||
} | ||
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func TestCompliance_AlwaysCheckpoint(t *testing.T) { | ||
storecompliance.TestBackendCompliance(t, func(testPath string) (backend.Registry, error) { | ||
return New(logp.NewLogger("test"), Settings{ | ||
Root: testPath, | ||
Checkpoint: func(filesize uint64) bool { | ||
return true | ||
}, | ||
}) | ||
}) | ||
} | ||
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func TestLoadVersion1(t *testing.T) { | ||
dataHome := "testdata/1" | ||
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list, err := ioutil.ReadDir(dataHome) | ||
if err != nil { | ||
t.Fatal(err) | ||
} | ||
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cases := list[:0] | ||
for _, info := range list { | ||
if info.IsDir() { | ||
cases = append(cases, info) | ||
} | ||
} | ||
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for _, info := range cases { | ||
name := filepath.Base(info.Name()) | ||
t.Run(name, func(t *testing.T) { | ||
testLoadVersion1Case(t, filepath.Join(dataHome, info.Name())) | ||
}) | ||
} | ||
} | ||
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func testLoadVersion1Case(t *testing.T, dataPath string) { | ||
path, err := ioutil.TempDir("", "") | ||
if err != nil { | ||
t.Fatalf("Failed to create temporary test directory: %v", err) | ||
} | ||
defer os.RemoveAll(path) | ||
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t.Logf("Test tmp dir: %v", path) | ||
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if err := copyPath(path, dataPath); err != nil { | ||
t.Fatalf("Failed to copy test file to the temporary directory: %v", err) | ||
} | ||
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// load expected test results | ||
raw, err := ioutil.ReadFile(filepath.Join(path, "expected.json")) | ||
if err != nil { | ||
t.Fatalf("Failed to load expected.json: %v", err) | ||
} | ||
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expected := struct { | ||
Txid uint64 | ||
Datafile string | ||
Entries map[string]interface{} | ||
}{} | ||
if err := json.Unmarshal(raw, &expected); err != nil { | ||
t.Fatalf("Failed to parse expected.json: %v", err) | ||
} | ||
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// load store: | ||
store, err := openStore(logp.NewLogger("test"), path, 0660, 4096, true, func(_ uint64) bool { | ||
return false | ||
}) | ||
if err != nil { | ||
t.Fatalf("Failed to load test store: %v", err) | ||
} | ||
defer store.Close() | ||
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disk := store.disk | ||
disk.removeOldDataFiles() | ||
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// validate store: | ||
assert.Equal(t, expected.Txid, disk.nextTxID-1) | ||
if expected.Datafile != "" { | ||
assert.Equal(t, filepath.Join(path, expected.Datafile), disk.activeDataFile.path) | ||
} | ||
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// check all keys in expected are known and do match stored values: | ||
func() { | ||
for key, val := range expected.Entries { | ||
var tmp interface{} | ||
err := store.Get(key, &tmp) | ||
require.NoError(t, err, "error reading entry (key=%v)", key) | ||
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assert.Equal(t, val, tmp, "failed when checking key '%s'", key) | ||
} | ||
}() | ||
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// check store does not contain any additional keys | ||
func() { | ||
err = store.Each(func(key string, val statestore.ValueDecoder) (bool, error) { | ||
_, exists := expected.Entries[string(key)] | ||
if !exists { | ||
t.Errorf("unexpected key: %s", key) | ||
} | ||
return true, nil | ||
}) | ||
assert.NoError(t, err) | ||
}() | ||
} | ||
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func TestTxIDLessEqual(t *testing.T) { | ||
cases := map[string]struct { | ||
a, b uint64 | ||
want bool | ||
}{ | ||
"is equal": {10, 10, true}, | ||
"is less": {8, 9, true}, | ||
"is bigger": {9, 8, false}, | ||
"is less 0 with integer overflow": { | ||
math.MaxUint64 - 2, 0, true, | ||
}, | ||
"is less random value with integer overflow": { | ||
math.MaxUint64 - 2, 10, true, | ||
}, | ||
"is less with large ids": { | ||
math.MaxUint64 - 10, math.MaxUint64 - 9, true, | ||
}, | ||
"is bigger with large ids": { | ||
math.MaxUint64 - 9, math.MaxUint64 - 10, false, | ||
}, | ||
} | ||
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for name, test := range cases { | ||
t.Run(name, func(t *testing.T) { | ||
got := isTxIDLessEqual(test.a, test.b) | ||
if got != test.want { | ||
t.Fatalf("%v <= %v should be %v", test.a, test.b, test.want) | ||
} | ||
}) | ||
} | ||
} | ||
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func copyPath(to, from string) error { | ||
info, err := os.Stat(from) | ||
if err != nil { | ||
return err | ||
} | ||
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if info.IsDir() { | ||
return copyDir(to, from) | ||
} | ||
if info.Mode().IsRegular() { | ||
return copyFile(to, from) | ||
} | ||
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// ignore other file types | ||
return nil | ||
} | ||
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func copyDir(to, from string) error { | ||
if !isDir(to) { | ||
info, err := os.Stat(from) | ||
if err != nil { | ||
return err | ||
} | ||
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if err := os.MkdirAll(to, info.Mode()); err != nil { | ||
return err | ||
} | ||
} | ||
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list, err := ioutil.ReadDir(from) | ||
if err != nil { | ||
return err | ||
} | ||
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for _, file := range list { | ||
name := file.Name() | ||
err := copyPath(filepath.Join(to, name), filepath.Join(from, name)) | ||
if err != nil { | ||
return err | ||
} | ||
} | ||
return nil | ||
} | ||
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func copyFile(to, from string) error { | ||
in, err := os.Open(from) | ||
if err != nil { | ||
return err | ||
} | ||
defer in.Close() | ||
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info, err := in.Stat() | ||
if err != nil { | ||
return err | ||
} | ||
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out, err := os.OpenFile(to, os.O_CREATE|os.O_RDWR|os.O_TRUNC, info.Mode()) | ||
if err != nil { | ||
return err | ||
} | ||
defer out.Close() | ||
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_, err = io.Copy(out, in) | ||
return err | ||
} | ||
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func isDir(path string) bool { | ||
info, err := os.Stat(path) | ||
return err == nil && info.IsDir() | ||
} | ||
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func isFile(path string) bool { | ||
info, err := os.Stat(path) | ||
return err == nil && info.Mode().IsRegular() | ||
} |
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