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Signed-off-by: Marek Siarkowicz <siarkowicz@google.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,111 @@ | ||
| // Copyright 2017 The etcd Authors | ||
| // | ||
| // 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 e2e | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "os" | ||
| "path/filepath" | ||
|
|
||
| "go.etcd.io/etcd/pkg/v3/expect" | ||
| "go.uber.org/zap" | ||
| ) | ||
|
|
||
| func newLazyFS(lg *zap.Logger, dataDir string, tmp TempDirProvider) *LazyFS { | ||
| return &LazyFS{ | ||
| lg: lg, | ||
| DataDir: dataDir, | ||
| LazyFSDir: tmp.TempDir(), | ||
| } | ||
| } | ||
|
|
||
| type TempDirProvider interface { | ||
| TempDir() string | ||
| } | ||
|
|
||
| type LazyFS struct { | ||
| lg *zap.Logger | ||
|
|
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| DataDir string | ||
| LazyFSDir string | ||
|
|
||
| ep *expect.ExpectProcess | ||
| } | ||
|
|
||
| func (fs *LazyFS) Start(ctx context.Context) (err error) { | ||
| if fs.ep != nil { | ||
| return nil | ||
| } | ||
| err = os.WriteFile(fs.configPath(), fs.config(), 0666) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| dataPath := filepath.Join(fs.LazyFSDir, "data") | ||
| err = os.Mkdir(dataPath, 0777) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| flags := []string{fs.DataDir, "--config-path", fs.configPath(), "-o", "allow_other", "-o", "modules=subdir", "-o", "subdir=" + dataPath, "-f"} | ||
| fs.lg.Info("Started lazyfs", zap.Strings("flags", flags)) | ||
| fs.ep, err = expect.NewExpect(BinPath.LazyFS, flags...) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| _, err = fs.ep.ExpectWithContext(ctx, "waiting for fault commands") | ||
| return err | ||
| } | ||
|
|
||
| func (fs *LazyFS) configPath() string { | ||
| return filepath.Join(fs.LazyFSDir, "config.toml") | ||
| } | ||
|
|
||
| func (fs *LazyFS) socketPath() string { | ||
| return filepath.Join(fs.LazyFSDir, "sock.fifo") | ||
| } | ||
|
|
||
| func (fs *LazyFS) config() []byte { | ||
| return []byte(fmt.Sprintf(`[faults] | ||
| fifo_path=%q | ||
| [cache] | ||
| apply_eviction=false | ||
| [cache.simple] | ||
| custom_size="1gb" | ||
| blocks_per_page=1 | ||
| [filesystem] | ||
| log_all_operations=false | ||
| `, fs.socketPath())) | ||
| } | ||
|
|
||
| func (fs *LazyFS) Stop() error { | ||
| if fs.ep == nil { | ||
| return nil | ||
| } | ||
| defer func() { fs.ep = nil }() | ||
| err := fs.ep.Stop() | ||
| if err != nil { | ||
| return err | ||
| } | ||
| return fs.ep.Close() | ||
| } | ||
|
|
||
| func (fs *LazyFS) ClearCache(ctx context.Context) error { | ||
| err := os.WriteFile(fs.socketPath(), []byte("lazyfs::clear-cache\n"), 0666) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| _, err = fs.ep.ExpectWithContext(ctx, "cache is cleared") | ||
| return err | ||
| } |
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