forked from wemixarchive/go-wemix
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
core/rawdb, cmd, ethdb, eth: implement freezer tail deletion (ethereu…
…m#23954) * core/rawdb, cmd, ethdb, eth: implement freezer tail deletion * core/rawdb: address comments from martin and sina * core/rawdb: fixes cornercase in tail deletion * core/rawdb: separate metadata into a standalone file * core/rawdb: remove unused code * core/rawdb: add random test * core/rawdb: polish code * core/rawdb: fsync meta file before manipulating the index * core/rawdb: fix typo * core/rawdb: address comments
- Loading branch information
1 parent
09368ea
commit 1506db8
Showing
14 changed files
with
1,102 additions
and
132 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,109 @@ | ||
| // Copyright 2022 The go-ethereum Authors | ||
| // This file is part of the go-ethereum library. | ||
| // | ||
| // The go-ethereum library is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU Lesser General Public License as published by | ||
| // the Free Software Foundation, either version 3 of the License, or | ||
| // (at your option) any later version. | ||
| // | ||
| // The go-ethereum library is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU Lesser General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU Lesser General Public License | ||
| // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/> | ||
|
|
||
| package rawdb | ||
|
|
||
| import ( | ||
| "io" | ||
| "os" | ||
|
|
||
| "github.com/ethereum/go-ethereum/log" | ||
| "github.com/ethereum/go-ethereum/rlp" | ||
| ) | ||
|
|
||
| const freezerVersion = 1 // The initial version tag of freezer table metadata | ||
|
|
||
| // freezerTableMeta wraps all the metadata of the freezer table. | ||
| type freezerTableMeta struct { | ||
| // Version is the versioning descriptor of the freezer table. | ||
| Version uint16 | ||
|
|
||
| // VirtualTail indicates how many items have been marked as deleted. | ||
| // Its value is equal to the number of items removed from the table | ||
| // plus the number of items hidden in the table, so it should never | ||
| // be lower than the "actual tail". | ||
| VirtualTail uint64 | ||
| } | ||
|
|
||
| // newMetadata initializes the metadata object with the given virtual tail. | ||
| func newMetadata(tail uint64) *freezerTableMeta { | ||
| return &freezerTableMeta{ | ||
| Version: freezerVersion, | ||
| VirtualTail: tail, | ||
| } | ||
| } | ||
|
|
||
| // readMetadata reads the metadata of the freezer table from the | ||
| // given metadata file. | ||
| func readMetadata(file *os.File) (*freezerTableMeta, error) { | ||
| _, err := file.Seek(0, io.SeekStart) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| var meta freezerTableMeta | ||
| if err := rlp.Decode(file, &meta); err != nil { | ||
| return nil, err | ||
| } | ||
| return &meta, nil | ||
| } | ||
|
|
||
| // writeMetadata writes the metadata of the freezer table into the | ||
| // given metadata file. | ||
| func writeMetadata(file *os.File, meta *freezerTableMeta) error { | ||
| _, err := file.Seek(0, io.SeekStart) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| return rlp.Encode(file, meta) | ||
| } | ||
|
|
||
| // loadMetadata loads the metadata from the given metadata file. | ||
| // Initializes the metadata file with the given "actual tail" if | ||
| // it's empty. | ||
| func loadMetadata(file *os.File, tail uint64) (*freezerTableMeta, error) { | ||
| stat, err := file.Stat() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| // Write the metadata with the given actual tail into metadata file | ||
| // if it's non-existent. There are two possible scenarios here: | ||
| // - the freezer table is empty | ||
| // - the freezer table is legacy | ||
| // In both cases, write the meta into the file with the actual tail | ||
| // as the virtual tail. | ||
| if stat.Size() == 0 { | ||
| m := newMetadata(tail) | ||
| if err := writeMetadata(file, m); err != nil { | ||
| return nil, err | ||
| } | ||
| return m, nil | ||
| } | ||
| m, err := readMetadata(file) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| // Update the virtual tail with the given actual tail if it's even | ||
| // lower than it. Theoretically it shouldn't happen at all, print | ||
| // a warning here. | ||
| if m.VirtualTail < tail { | ||
| log.Warn("Updated virtual tail", "have", m.VirtualTail, "now", tail) | ||
| m.VirtualTail = tail | ||
| if err := writeMetadata(file, m); err != nil { | ||
| return nil, err | ||
| } | ||
| } | ||
| return m, nil | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| // Copyright 2022 The go-ethereum Authors | ||
| // This file is part of the go-ethereum library. | ||
| // | ||
| // The go-ethereum library is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU Lesser General Public License as published by | ||
| // the Free Software Foundation, either version 3 of the License, or | ||
| // (at your option) any later version. | ||
| // | ||
| // The go-ethereum library is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU Lesser General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU Lesser General Public License | ||
| // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/> | ||
|
|
||
| package rawdb | ||
|
|
||
| import ( | ||
| "io/ioutil" | ||
| "os" | ||
| "testing" | ||
| ) | ||
|
|
||
| func TestReadWriteFreezerTableMeta(t *testing.T) { | ||
| f, err := ioutil.TempFile(os.TempDir(), "*") | ||
| if err != nil { | ||
| t.Fatalf("Failed to create file %v", err) | ||
| } | ||
| err = writeMetadata(f, newMetadata(100)) | ||
| if err != nil { | ||
| t.Fatalf("Failed to write metadata %v", err) | ||
| } | ||
| meta, err := readMetadata(f) | ||
| if err != nil { | ||
| t.Fatalf("Failed to read metadata %v", err) | ||
| } | ||
| if meta.Version != freezerVersion { | ||
| t.Fatalf("Unexpected version field") | ||
| } | ||
| if meta.VirtualTail != uint64(100) { | ||
| t.Fatalf("Unexpected virtual tail field") | ||
| } | ||
| } | ||
|
|
||
| func TestInitializeFreezerTableMeta(t *testing.T) { | ||
| f, err := ioutil.TempFile(os.TempDir(), "*") | ||
| if err != nil { | ||
| t.Fatalf("Failed to create file %v", err) | ||
| } | ||
| meta, err := loadMetadata(f, uint64(100)) | ||
| if err != nil { | ||
| t.Fatalf("Failed to read metadata %v", err) | ||
| } | ||
| if meta.Version != freezerVersion { | ||
| t.Fatalf("Unexpected version field") | ||
| } | ||
| if meta.VirtualTail != uint64(100) { | ||
| t.Fatalf("Unexpected virtual tail field") | ||
| } | ||
| } |
Oops, something went wrong.