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mirror of https://github.com/taigrr/bitcask synced 2025-01-18 04:03:17 -08:00

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{{ range .Versions }}
<a name="{{ .Tag.Name }}"></a>
## {{ if .Tag.Previous }}[{{ .Tag.Name }}]({{ $.Info.RepositoryURL }}/compare/{{ .Tag.Previous.Name }}...{{ .Tag.Name }}){{ else }}{{ .Tag.Name }}{{ end }} ({{ datetime "2006-01-02" .Tag.Date }})
{{ range .CommitGroups -}}
### {{ .Title }}
{{ range .Commits -}}
* {{ .Subject }}
{{ end }}
{{ end -}}
{{- if .NoteGroups -}}
{{ range .NoteGroups -}}
### {{ .Title }}
{{ range .Notes }}
{{ .Body }}
{{ end }}
{{ end -}}
{{ end -}}
{{ end -}}

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@ -1,28 +0,0 @@
---
style: Github
template: CHANGELOG.tpl.md
info:
title: CHANGELOG
repository_url: https://git.mills.io/prologic/bitcask
options:
commits:
filters:
Type:
- Add
- Fix
- Update
- Document
commit_groups:
title_maps:
Add: Features
Update: Updates
Fix: Bug Fixes
Document: Documentation
header:
pattern: "^((\\w+)\\s.*)$"
pattern_maps:
- Subject
- Type
notes:
keywords:
- BREAKING CHANGE

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@ -1,28 +1,14 @@
---
kind: pipeline
name: default
steps:
- name: build & run tests
image: r.mills.io/prologic/golang-alpine
- name: build
image: golang:latest
commands:
- make build
- make test
- go test -v -cover -coverprofile=coverage.txt -covermode=atomic -coverpkg=$(shell go list) -race .
- name: notify
image: plugins/webhook
- name: coverage
image: plugins/codecov
settings:
urls:
- https://msgbus.mills.io/ci.mills.io
when:
status:
- success
- failure
trigger:
branch:
- master
event:
- tag
- push
- pull_request
token:
from_secret: codecov-token

2
.github/FUNDING.yml vendored Normal file
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@ -0,0 +1,2 @@
github: prologic
patreon: prologic

12
.gitignore vendored
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@ -1,15 +1,9 @@
*~*
*.db
*.bak
**.envrc
*.db
/tmp
/dist
/cacheDb
/coverage.txt
/bitcask
/bitcaskd
/bitcask_bench*
/cmd/bitcask/bitcask
/cmd/bitcaskd/bitcaskd
/tmp
/dist

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@ -1,39 +1,34 @@
---
builds:
-
id: bitcask
binary: bitcask
main: ./cmd/bitcask
flags: -tags "static_build"
ldflags: -w -X git.mills.io/prologic/bitcask/internal.Version={{.Version}} -X git.mills.io/prologic/bitcask/internal.Commit={{.Commit}}
ldflags: -w -X github.com/prologic/bitcask/internal.Version={{.Version}} -X github.com/prologic/bitcask/internal.Commit={{.Commit}}
env:
- CGO_ENABLED=0
goos:
- darwin
- linux
goarch:
- amd64
- arm64
-
id: bitcaskd
binary: bitcaskd
main: ./cmd/bitcaskd
flags: -tags "static_build"
ldflags: -w -X git.mills.io/prologic/bitcask/internal.Version={{.Version}} -X git.mills.io/prologic/bitcask/internal.Commit={{.Commit}}
ldflags: -w -X github.com/prologic/bitcask/internal.Version={{.Version}} -X github.com/prologic/bitcask/internal.Commit={{.Commit}}
env:
- CGO_ENABLED=0
goos:
- darwin
- linux
goarch:
- amd64
- arm64
signs:
- artifacts: checksum
release:
gitea:
owner: prologic
name: bitcask
draft: true
gitea_urls:
api: https://git.mills.io/api/v1/
sign:
artifacts: checksum
archive:
replacements:
darwin: Darwin
linux: Linux
windows: Windows
386: i386
amd64: x86_64
checksum:
name_template: 'checksums.txt'
snapshot:
name_template: "{{ .Tag }}-next"
changelog:
sort: asc
filters:
exclude:
- '^docs:'
- '^test:'

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@ -2,20 +2,12 @@
# Name or Organization <email address>
# The email address is not required for organizations.
Alain Gilbert <alain.gilbert.15@gmail.com>
Awn Umar <awn@spacetime.dev>
Bryan Stenson <bryan@siliconvortex.com>
Christian Muehlhaeuser <muesli@gmail.com>
Ignacio Hagopian <jsign.uy@gmail.com>
James Mills <prologic@shortcircuit.net.au>
Jesse Donat <donatj@gmail.com>
Kebert Xela kebertxela
panyun panyun
shiniao <zhuzhezhe95@gmail.com>
Whemoon Jang <palindrom615@gmail.com>
Yash Chandra <yashschandra@gmail.com>
Yury Fedorov orlangure
o2gy84 <o2gy84@gmail.com>
garsue <labs.garsue@gmail.com>
biozz <ielfimov@gmail.com>
jason3gb <jason3gb@gmail.com>

View File

@ -1,501 +0,0 @@
<a name="v1.0.2"></a>
## [v1.0.2](https://git.mills.io/prologic/bitcask/compare/v1.0.1...v1.0.2) (2021-11-01)
### Bug Fixes
* Fix a data race in Datafile.ReadAt()
* Fix release tool
<a name="v1.0.1"></a>
## [v1.0.1](https://git.mills.io/prologic/bitcask/compare/v1.0.0...v1.0.1) (2021-10-31)
### Features
* Add ErrBadConfig and ErrBadMetadata as errors that consumers can check and use (#241)
* Add key prefix matching to KEYS command (#237)
### Updates
* Update CHANGELOG for v1.0.1
* Update image target
<a name="v1.0.0"></a>
## [v1.0.0](https://git.mills.io/prologic/bitcask/compare/1.0.0...v1.0.0) (2021-07-24)
### Updates
* Update CHANGELOG for v1.0.0
<a name="1.0.0"></a>
## [1.0.0](https://git.mills.io/prologic/bitcask/compare/v0.3.14...1.0.0) (2021-07-24)
### Updates
* Update CHANGELOG for 1.0.0
* Update README
<a name="v0.3.14"></a>
## [v0.3.14](https://git.mills.io/prologic/bitcask/compare/v0.3.13...v0.3.14) (2021-07-21)
### Bug Fixes
* Fix runGC behaviour to correctly delete all expired keys (#229)
* Fix missing push event
* Fix how CI is triggered
* Fix README Go Reference badge
* Fix README badges
### Features
* Add RangeScan() support (#160)
### Updates
* Update CHANGELOG for v0.3.14
<a name="v0.3.13"></a>
## [v0.3.13](https://git.mills.io/prologic/bitcask/compare/v0.3.12...v0.3.13) (2021-07-16)
### Bug Fixes
* Fix paths used for temporary recovery iles to avoid crossing devices (#223)
### Features
* Add Drone CI config
### Updates
* Update CHANGELOG for v0.3.13
<a name="v0.3.12"></a>
## [v0.3.12](https://git.mills.io/prologic/bitcask/compare/v0.3.11...v0.3.12) (2021-07-13)
### Updates
* Update CHANGELOG for v0.3.12
<a name="v0.3.11"></a>
## [v0.3.11](https://git.mills.io/prologic/bitcask/compare/v0.3.10...v0.3.11) (2021-07-10)
### Bug Fixes
* Fix missing go.sum entries
* Fix GoReleaser config
* Fix go.sum
### Documentation
* Document good and possibly poor use-cases of Bitcask (#199)
### Features
* Add support for keys with ttl (#177)
### Updates
* Update CHANGELOG for v0.3.11
<a name="v0.3.10"></a>
## [v0.3.10](https://git.mills.io/prologic/bitcask/compare/v0.3.9...v0.3.10) (2020-12-18)
### Bug Fixes
* Fix a bug when MaxValueSize == 0 on Merge operations
* Fix link to bitcask-bench
* Fix CI (again)
* Fix CI
### Features
* Add support for unlimited key/value sizes
* Add a few more test cases for concurrent operations
### Updates
* Update CHANGELOG for v0.3.10
* Update README.md
<a name="v0.3.9"></a>
## [v0.3.9](https://git.mills.io/prologic/bitcask/compare/v0.3.8...v0.3.9) (2020-11-17)
### Bug Fixes
* Fix a race condition around .Close() and .Sync()
### Updates
* Update CHANGELOG for v0.3.9
<a name="v0.3.8"></a>
## [v0.3.8](https://git.mills.io/prologic/bitcask/compare/v0.3.7...v0.3.8) (2020-11-17)
### Updates
* Update CHANGELOG for v0.3.8
<a name="v0.3.7"></a>
## [v0.3.7](https://git.mills.io/prologic/bitcask/compare/v0.3.6...v0.3.7) (2020-11-17)
### Updates
* Update CHANGELOG for v0.3.7
<a name="v0.3.6"></a>
## [v0.3.6](https://git.mills.io/prologic/bitcask/compare/v0.3.5...v0.3.6) (2020-11-17)
### Bug Fixes
* Fix typo in labeler (#172)
* Fix builds configuration for goreleaser
* Fix (again) goreleaser config
* Fix goreleaser config and improve release notes / changelog
* Fix recoverDatafile error covering (#162)
* Fix loadIndex to be deterministic (#115)
### Features
* Add configuration options for FileMode (#183)
* Add imports and log in example code (#182)
* Add empty changelog
* Add DependaBot config
* Add DeleteAll function (#116)
### Updates
* Update CHANGELOG for v0.3.6
* Update README.md
* Update CHANGELOG for v0.3.6
* Update CHANGELOG for v0.3.6
* Update deps (#140)
* Update README.md
<a name="v0.3.5"></a>
## [v0.3.5](https://git.mills.io/prologic/bitcask/compare/v0.3.4...v0.3.5) (2019-10-20)
### Bug Fixes
* Fix setup target in Makefile to install mockery correctly
* Fix glfmt/golint issues
* Fix spelling mistake in README s/Sponser/Sponsor
### Features
* Add *.db to ignore future accidental commits of a bitcask db to the repo
* Add unit test for opening bad database with corrupted/invalid datafiles (#105)
### Updates
* Update Drone CI test pipeline
* Update README.md
* Update to Go 1.13 and update README with new benchmarks (#89)
* Update README.md
<a name="v0.3.4"></a>
## [v0.3.4](https://git.mills.io/prologic/bitcask/compare/v0.3.3...v0.3.4) (2019-09-02)
<a name="v0.3.3"></a>
## [v0.3.3](https://git.mills.io/prologic/bitcask/compare/v0.3.2...v0.3.3) (2019-09-02)
### Bug Fixes
* Fix a bug wit the decoder passing the wrong value for the value's offset into the buffer (#77)
* Fix typo (#65)
* Fix and cleanup some unnecessary internal sub-packages and duplication
### Updates
* Update README.md
* Update README.md
* Update README.md
* Update README.md
<a name="v0.3.2"></a>
## [v0.3.2](https://git.mills.io/prologic/bitcask/compare/v0.3.1...v0.3.2) (2019-08-08)
### Updates
* Update README.md
* Update README.md
* Update CONTRIBUTING.md
<a name="v0.3.1"></a>
## [v0.3.1](https://git.mills.io/prologic/bitcask/compare/v0.3.0...v0.3.1) (2019-08-05)
### Updates
* Update README.md
* Update README.md
* Update README.md
<a name="v0.3.0"></a>
## [v0.3.0](https://git.mills.io/prologic/bitcask/compare/v0.2.2...v0.3.0) (2019-07-29)
### Updates
* Update README.md
* Update README.md
<a name="v0.2.2"></a>
## [v0.2.2](https://git.mills.io/prologic/bitcask/compare/v0.2.1...v0.2.2) (2019-07-27)
<a name="v0.2.1"></a>
## [v0.2.1](https://git.mills.io/prologic/bitcask/compare/v0.2.0...v0.2.1) (2019-07-25)
<a name="v0.2.0"></a>
## [v0.2.0](https://git.mills.io/prologic/bitcask/compare/v0.1.7...v0.2.0) (2019-07-25)
### Bug Fixes
* Fix issue(db file Merge issue in windows env): (#15)
<a name="v0.1.7"></a>
## [v0.1.7](https://git.mills.io/prologic/bitcask/compare/v0.1.6...v0.1.7) (2019-07-19)
### Bug Fixes
* Fix mismatched key casing. (#12)
* Fix outdated README (#11)
* Fix typos in bitcask.go docs (#10)
### Updates
* Update generated protobuf code
* Update README.md
<a name="v0.1.6"></a>
## [v0.1.6](https://git.mills.io/prologic/bitcask/compare/v0.1.5...v0.1.6) (2019-04-01)
### Features
* Add Development section to README documenting use of Protobuf and tooling required. #6
* Add other badges from img.shields.io
<a name="v0.1.5"></a>
## [v0.1.5](https://git.mills.io/prologic/bitcask/compare/v0.1.4...v0.1.5) (2019-03-30)
### Documentation
* Document using the Docker Image
### Features
* Add Dockerfile to publish images to Docker Hub
### Updates
* Update README.md
<a name="v0.1.4"></a>
## [v0.1.4](https://git.mills.io/prologic/bitcask/compare/v0.1.3...v0.1.4) (2019-03-23)
<a name="v0.1.3"></a>
## [v0.1.3](https://git.mills.io/prologic/bitcask/compare/v0.1.2...v0.1.3) (2019-03-23)
<a name="v0.1.2"></a>
## [v0.1.2](https://git.mills.io/prologic/bitcask/compare/v0.1.1...v0.1.2) (2019-03-22)
<a name="v0.1.1"></a>
## [v0.1.1](https://git.mills.io/prologic/bitcask/compare/v0.1.0...v0.1.1) (2019-03-22)
<a name="v0.1.0"></a>
## [v0.1.0](https://git.mills.io/prologic/bitcask/compare/0.0.26...v0.1.0) (2019-03-22)
<a name="0.0.26"></a>
## [0.0.26](https://git.mills.io/prologic/bitcask/compare/0.0.25...0.0.26) (2019-03-21)
### Features
* Add docs for bitcask
* Add docs for options
* Add KeYS command to server (bitraftd)
* Add Len() to exported API (extended API)
* Add Keys() to exported API (extended API)
* Add EXISTS command to server (bitraftd)
<a name="0.0.25"></a>
## [0.0.25](https://git.mills.io/prologic/bitcask/compare/0.0.24...0.0.25) (2019-03-21)
### Features
* Add Has() to exported API (extended API)
* Add MergeOpen test case
### Updates
* Update README.md
* Update README.md
<a name="0.0.24"></a>
## [0.0.24](https://git.mills.io/prologic/bitcask/compare/0.0.23...0.0.24) (2019-03-20)
<a name="0.0.23"></a>
## [0.0.23](https://git.mills.io/prologic/bitcask/compare/0.0.22...0.0.23) (2019-03-20)
### Features
* Add bitcaskd to install target
<a name="0.0.22"></a>
## [0.0.22](https://git.mills.io/prologic/bitcask/compare/0.0.21...0.0.22) (2019-03-18)
<a name="0.0.21"></a>
## [0.0.21](https://git.mills.io/prologic/bitcask/compare/0.0.20...0.0.21) (2019-03-18)
<a name="0.0.20"></a>
## [0.0.20](https://git.mills.io/prologic/bitcask/compare/0.0.19...0.0.20) (2019-03-17)
<a name="0.0.19"></a>
## [0.0.19](https://git.mills.io/prologic/bitcask/compare/0.0.18...0.0.19) (2019-03-17)
<a name="0.0.18"></a>
## [0.0.18](https://git.mills.io/prologic/bitcask/compare/0.0.17...0.0.18) (2019-03-16)
<a name="0.0.17"></a>
## [0.0.17](https://git.mills.io/prologic/bitcask/compare/0.0.16...0.0.17) (2019-03-16)
### Features
* Add CRC Checksum checks on reading values back
<a name="0.0.16"></a>
## [0.0.16](https://git.mills.io/prologic/bitcask/compare/0.0.15...0.0.16) (2019-03-16)
<a name="0.0.15"></a>
## [0.0.15](https://git.mills.io/prologic/bitcask/compare/0.0.14...0.0.15) (2019-03-16)
### Bug Fixes
* Fix a race condition + Use my fork of trie
<a name="0.0.14"></a>
## [0.0.14](https://git.mills.io/prologic/bitcask/compare/0.0.13...0.0.14) (2019-03-16)
<a name="0.0.13"></a>
## [0.0.13](https://git.mills.io/prologic/bitcask/compare/0.0.12...0.0.13) (2019-03-16)
### Features
* Add prefix scan for keys using a Trie
<a name="0.0.12"></a>
## [0.0.12](https://git.mills.io/prologic/bitcask/compare/0.0.11...0.0.12) (2019-03-14)
<a name="0.0.11"></a>
## [0.0.11](https://git.mills.io/prologic/bitcask/compare/0.0.10...0.0.11) (2019-03-14)
### Updates
* Update README.md
<a name="0.0.10"></a>
## [0.0.10](https://git.mills.io/prologic/bitcask/compare/0.0.9...0.0.10) (2019-03-14)
### Bug Fixes
* Fix concurrent read bug
* Fix concurrent write bug with multiple goroutines writing to the to the active datafile
### Updates
* Update README.md
<a name="0.0.9"></a>
## [0.0.9](https://git.mills.io/prologic/bitcask/compare/0.0.8...0.0.9) (2019-03-14)
<a name="0.0.8"></a>
## [0.0.8](https://git.mills.io/prologic/bitcask/compare/0.0.7...0.0.8) (2019-03-13)
<a name="0.0.7"></a>
## [0.0.7](https://git.mills.io/prologic/bitcask/compare/0.0.6...0.0.7) (2019-03-13)
<a name="0.0.6"></a>
## [0.0.6](https://git.mills.io/prologic/bitcask/compare/0.0.5...0.0.6) (2019-03-13)
### Bug Fixes
* Fix usage output of bitcaskd
<a name="0.0.5"></a>
## [0.0.5](https://git.mills.io/prologic/bitcask/compare/0.0.4...0.0.5) (2019-03-13)
### Features
* Add a simple Redis compatible server daemon (bitcaskd)
### Updates
* Update README.md
<a name="0.0.4"></a>
## [0.0.4](https://git.mills.io/prologic/bitcask/compare/0.0.3...0.0.4) (2019-03-13)
### Features
* Add flock on database Open()/Close() to prevent multiple concurrent processes write access. Fixes #2
<a name="0.0.3"></a>
## [0.0.3](https://git.mills.io/prologic/bitcask/compare/0.0.2...0.0.3) (2019-03-13)
<a name="0.0.2"></a>
## [0.0.2](https://git.mills.io/prologic/bitcask/compare/0.0.1...0.0.2) (2019-03-13)
<a name="0.0.1"></a>
## 0.0.1 (2019-03-13)

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@ -27,14 +27,8 @@ install: build
@go install ./cmd/bitcask/...
@go install ./cmd/bitcaskd/...
ifeq ($(PUBLISH), 1)
image:
@docker build --build-arg VERSION="$(VERSION)" --build-arg COMMIT="$(COMMIT)" -t prologic/bitcask .
@docker push prologic/bitcask
else
image:
@docker build --build-arg VERSION="$(VERSION)" --build-arg COMMIT="$(COMMIT)" -t prologic/bitcask .
endif
@docker build -t prologic/bitcask .
release:
@./tools/release.sh
@ -43,7 +37,7 @@ profile: build
@go test -cpuprofile cpu.prof -memprofile mem.prof -v -bench .
bench: build
@go test -v -run=XXX -benchmem -bench=. .
@go test -v -benchmem -bench=. .
mocks:
@mockery -all -case underscore -output ./internal/mocks -recursive

125
README.md
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@ -1,120 +1,66 @@
# bitcask
[![Build Status](https://ci.mills.io/api/badges/prologic/bitcask/status.svg)](https://ci.mills.io/prologic/bitcask)
[![Go Report Card](https://goreportcard.com/badge/git.mills.io/prologic/bitcask)](https://goreportcard.com/report/git.mills.io/prologic/bitcask)
[![Go Reference](https://pkg.go.dev/badge/git.mills.io/prologic/bitcask.svg)](https://pkg.go.dev/git.mills.io/prologic/bitcask)
[![Build Status](https://cloud.drone.io/api/badges/prologic/bitcask/status.svg)](https://cloud.drone.io/prologic/bitcask)
[![CodeCov](https://codecov.io/gh/prologic/bitcask/branch/master/graph/badge.svg)](https://codecov.io/gh/prologic/bitcask)
[![Go Report Card](https://goreportcard.com/badge/prologic/bitcask)](https://goreportcard.com/report/prologic/bitcask)
[![codebeat badge](https://codebeat.co/badges/15fba8a5-3044-4f40-936f-9e0f5d5d1fd9)](https://codebeat.co/projects/github-com-prologic-bitcask-master)
[![GoDoc](https://godoc.org/github.com/prologic/bitcask?status.svg)](https://godoc.org/github.com/prologic/bitcask)
[![GitHub license](https://img.shields.io/github/license/prologic/bitcask.svg)](https://github.com/prologic/bitcask)
[![Sourcegraph](https://sourcegraph.com/github.com/prologic/bitcask/-/badge.svg)](https://sourcegraph.com/github.com/prologic/bitcask?badge)
A high performance Key/Value store written in [Go](https://golang.org) with a predictable read/write performance and high throughput. Uses a [Bitcask](https://en.wikipedia.org/wiki/Bitcask) on-disk layout (LSM+WAL) similar to [Riak](https://riak.com/)
For a more feature-complete Redis-compatible server, distributed key/value store have a look at [Bitraft](https://git.mills.io/prologic/bitraft) which uses this library as its backend. Use [Bitcask](https://git.mills.io/prologic/bitcask) as a starting point or if you want to embed in your application, use [Bitraft](https://git.mills.io/prologic/bitraft) if you need a complete server/client solution with high availability with a Redis-compatible API.
For a more feature-complete Redis-compatible server, distributed key/value store have a look at [Bitraft](https://github.com/prologic/bitraft) which uses this library as its backend. Use [Bitcask](https://github.com/prologic/bitcask) as a starting point or if you want to embed in your application, use [Bitraft](https://github.com/prologic/bitraft) if you need a complete server/client solution with high availability with a Redis-compatible API.
## Features
* Embedded (`import "git.mills.io/prologic/bitcask"`)
* Embeddable (`import "github.com/prologic/bitcask"`)
* Builtin CLI (`bitcask`)
* Builtin Redis-compatible server (`bitcaskd`)
* Predictable read/write performance
* Low latency
* High throughput (See: [Performance](README.md#Performance) )
## Is Bitcask right for my project?
__NOTE__: Please read this carefully to identify whether using Bitcask is
suitable for your needs.
`bitcask` is a **great fit** for:
- Storing hundreds of thousands to millions of key/value pairs based on
default configuration. With the default configuration (_configurable_)
of 64 bytes per key and 64kB values, 1M keys would consume roughly ~600-700MB
of memory ~65-70GB of disk storage. These are all configurable when you
create a new database with `bitcask.Open(...)` with functional-style options
you can pass with `WithXXX()`.
- As the backing store to a distributed key/value store. See for example the
[bitraft](https://git.mills.io/prologic/bitraft) as an example of this.
- For high performance, low latency read/write workloads where you cannot fit
a typical hash-map into memory, but require the highest level of performance
and predicate read latency. Bitcask ensures only 1 read/write IOPS are ever
required for reading and writing key/value pairs.
- As a general purpose embedded key/value store where you would have used
[BoltDB](https://github.com/boltdb/bolt),
[LevelDB](https://github.com/syndtr/goleveldb),
[BuntDB](https://github.com/tidwall/buntdb)
or similar...
`bitcask` is not suited for:
- Storing billions of records
The reason for this is the key-space is held in memory using a highly
performant and memory optimized adaptive radix tree thanks to
[go-adaptive-radix-tree](github.com/plar/go-adaptive-radix-tree) _however_
this means the more keys you have in your key space, the more memory is
consumed. Consider using a disk-backed B-Tree like [BoltDB](https://github.com/boltdb/bolt)
or [LevelDB](https://github.com/syndtr/goleveldb) if you intend to store a
large quantity of key/value pairs.
> Note however that storing large amounts of data in terms of value(s) is
> totally fine. In other wise thousands to millions of keys with large values
> will work just fine.
- Write intensive workloads. Due to the [Bitcask design](https://riak.com/assets/bitcask-intro.pdf?source=post_page---------------------------)
heavy write workloads that lots of key/value pairs will over time cause
problems like "Too many open files" (#193) errors to occur. This can be mitigated by
periodically compacting the data files by issuing a `.Merge()` operation however
if key/value pairs do not change or are never deleted, as-in only new key/value
pairs are ever written this will have no effect. Eventually you will run out
of file descriptors!
> You should consider your read/write workloads carefully and ensure you set
> appropriate file descriptor limits with `ulimit -n` that suit your needs.
## Development
```sh
$ git clone https://git.mills.io/prologic/bitcask.git
```#!sh
$ git clone https://github.com/prologic/bitcask.git
$ make
```
## Install
```sh
$ go get git.mills.io/prologic/bitcask
```#!sh
$ go get github.com/prologic/bitcask
```
## Usage (library)
Install the package into your project:
```sh
$ go get git.mills.io/prologic/bitcask
```#!sh
$ go get github.com/prologic/bitcask
```
```go
```#!go
package main
import (
"log"
"git.mills.io/prologic/bitcask"
)
import "github.com/prologic/bitcask"
func main() {
db, _ := bitcask.Open("/tmp/db")
defer db.Close()
db.Put([]byte("Hello"), []byte("World"))
val, _ := db.Get([]byte("Hello"))
log.Printf(string(val))
}
```
See the [GoDoc](https://godoc.org/git.mills.io/prologic/bitcask) for further
See the [godoc](https://godoc.org/github.com/prologic/bitcask) for further
documentation and other examples.
## Usage (tool)
```sh
```#!sh
$ bitcask -p /tmp/db set Hello World
$ bitcask -p /tmp/db get Hello
World
@ -124,14 +70,14 @@ World
There is also a builtin very simple Redis-compatible server called `bitcaskd`:
```sh
```#!sh
$ ./bitcaskd ./tmp
INFO[0000] starting bitcaskd v0.0.7@146f777 bind=":6379" path=./tmp
```
Example session:
```sh
```#!sh
$ telnet localhost 6379
Trying ::1...
Connected to localhost.
@ -156,21 +102,21 @@ Connection closed by foreign host.
You can also use the [Bitcask Docker Image](https://cloud.docker.com/u/prologic/repository/docker/prologic/bitcask):
```sh
```#!sh
$ docker pull prologic/bitcask
$ docker run -d -p 6379:6379 prologic/bitcask
```
## Performance
Benchmarks run on a 11" MacBook with a 1.4Ghz Intel Core i7:
Benchmarks run on a 11" Macbook with a 1.4Ghz Intel Core i7:
```sh
```#!sh
$ make bench
...
goos: darwin
goarch: amd64
pkg: git.mills.io/prologic/bitcask
pkg: github.com/prologic/bitcask
BenchmarkGet/128B-4 316515 3263 ns/op 39.22 MB/s 160 B/op 1 allocs/op
BenchmarkGet/256B-4 382551 3204 ns/op 79.90 MB/s 288 B/op 1 allocs/op
@ -212,29 +158,24 @@ For 128B values:
The full benchmark above shows linear performance as you increase key/value sizes.
## Stargazers over time
[![Stargazers over time](https://starcharts.herokuapp.com/prologic/bitcask.svg)](https://starcharts.herokuapp.com/prologic/bitcask)
## Support
Support the ongoing development of Bitcask!
**Sponsor**
**Sponser**
- Become a [Sponsor](https://www.patreon.com/prologic)
## Contributors
Thank you to all those that have contributed to this project, battle-tested it,
used it in their own projects or products, fixed bugs, improved performance
and even fix tiny typos in documentation! Thank you and keep contributing!
Thank you to all those that have contributed to this project, battle-tested it, used it in their own projects or products, fixed bugs, improved performance and even fix tiny typos in documentation! Thank you and keep contributing!
You can find an [AUTHORS](/AUTHORS) file where we keep a list of contributors
to the project. If you contribute a PR please consider adding your name there.
## Related Projects
- [bitraft](https://git.mills.io/prologic/bitraft) -- A Distributed Key/Value store (_using Raft_) with a Redis compatible protocol.
- [bitcaskfs](https://git.mills.io/prologic/bitcaskfs) -- A FUSE file system for mounting a Bitcask database.
- [bitcask-bench](https://git.mills.io/prologic/bitcask-bench) -- A benchmarking tool comparing Bitcask and several other Go key/value libraries.
You can find an [AUTHORS](/AUTHORS) file where we keep a list of contributors to the project. If you contriibute a PR please consider adding your name there. There is also Github's own [Contributors](https://github.com/prologic/bitcask/graphs/contributors) statistics.
## License
bitcask is licensed under the term of the [MIT License](https://git.mills.io/prologic/bitcask/blob/master/LICENSE)
bitcask is licensed under the term of the [MIT License](https://github.com/prologic/bitcask/blob/master/LICENSE)

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@ -7,7 +7,7 @@ import (
"github.com/spf13/cobra"
"github.com/spf13/viper"
"git.mills.io/prologic/bitcask"
"github.com/prologic/bitcask"
)
var delCmd = &cobra.Command{

View File

@ -11,7 +11,7 @@ import (
"github.com/spf13/cobra"
"github.com/spf13/viper"
"git.mills.io/prologic/bitcask"
"github.com/prologic/bitcask"
)
var errNotAllDataWritten = errors.New("error: not all data written")

View File

@ -8,7 +8,7 @@ import (
"github.com/spf13/cobra"
"github.com/spf13/viper"
"git.mills.io/prologic/bitcask"
"github.com/prologic/bitcask"
)
var getCmd = &cobra.Command{

View File

@ -11,7 +11,7 @@ import (
"github.com/spf13/cobra"
"github.com/spf13/viper"
"git.mills.io/prologic/bitcask"
"github.com/prologic/bitcask"
)
var importCmd = &cobra.Command{

View File

@ -7,7 +7,7 @@ import (
"github.com/spf13/cobra"
"github.com/spf13/viper"
"git.mills.io/prologic/bitcask"
"github.com/prologic/bitcask"
)
var initdbCmd = &cobra.Command{

View File

@ -8,7 +8,7 @@ import (
"github.com/spf13/cobra"
"github.com/spf13/viper"
"git.mills.io/prologic/bitcask"
"github.com/prologic/bitcask"
)
var keysCmd = &cobra.Command{

View File

@ -7,7 +7,7 @@ import (
"github.com/spf13/cobra"
"github.com/spf13/viper"
"git.mills.io/prologic/bitcask"
"github.com/prologic/bitcask"
)
var mergeCmd = &cobra.Command{

View File

@ -10,7 +10,7 @@ import (
"github.com/spf13/cobra"
"github.com/spf13/viper"
"git.mills.io/prologic/bitcask"
"github.com/prologic/bitcask"
)
var putCmd = &cobra.Command{

View File

@ -1,61 +0,0 @@
package main
import (
"fmt"
"os"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
"github.com/spf13/viper"
"git.mills.io/prologic/bitcask"
)
var rangeCmd = &cobra.Command{
Use: "range <start> <end>",
Aliases: []string{},
Short: "Perform a range scan for keys from a start to end key",
Long: `This performa a range scan for keys starting with the given start
key and ending with the end key. This uses a Trie to search for matching keys
within the range and returns all matched keys.`,
Args: cobra.ExactArgs(2),
Run: func(cmd *cobra.Command, args []string) {
path := viper.GetString("path")
start := args[0]
end := args[1]
os.Exit(_range(path, start, end))
},
}
func init() {
RootCmd.AddCommand(rangeCmd)
}
func _range(path, start, end string) int {
db, err := bitcask.Open(path)
if err != nil {
log.WithError(err).Error("error opening database")
return 1
}
defer db.Close()
err = db.Range([]byte(start), []byte(end), func(key []byte) error {
value, err := db.Get(key)
if err != nil {
log.WithError(err).Error("error reading key")
return err
}
fmt.Printf("%s\n", string(value))
log.WithField("key", key).WithField("value", value).Debug("key/value")
return nil
})
if err != nil {
log.WithError(err).Error("error ranging over keys")
return 1
}
return 0
}

View File

@ -6,11 +6,11 @@ import (
"os"
"path/filepath"
"git.mills.io/prologic/bitcask"
"git.mills.io/prologic/bitcask/internal"
"git.mills.io/prologic/bitcask/internal/config"
"git.mills.io/prologic/bitcask/internal/data/codec"
"git.mills.io/prologic/bitcask/internal/index"
"github.com/prologic/bitcask"
"github.com/prologic/bitcask/internal"
"github.com/prologic/bitcask/internal/config"
"github.com/prologic/bitcask/internal/data/codec"
"github.com/prologic/bitcask/internal/index"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
"github.com/spf13/viper"

View File

@ -8,7 +8,7 @@ import (
"github.com/spf13/cobra"
"github.com/spf13/viper"
"git.mills.io/prologic/bitcask/internal"
"github.com/prologic/bitcask/internal"
)
// RootCmd represents the base command when called without any subcommands

View File

@ -8,7 +8,7 @@ import (
"github.com/spf13/cobra"
"github.com/spf13/viper"
"git.mills.io/prologic/bitcask"
"github.com/prologic/bitcask"
)
var scanCmd = &cobra.Command{

View File

@ -9,7 +9,7 @@ import (
"github.com/spf13/cobra"
"github.com/spf13/viper"
"git.mills.io/prologic/bitcask"
"github.com/prologic/bitcask"
)
var statsCmd = &cobra.Command{

View File

@ -7,7 +7,7 @@ import (
log "github.com/sirupsen/logrus"
flag "github.com/spf13/pflag"
"git.mills.io/prologic/bitcask/internal"
"github.com/prologic/bitcask/internal"
)
var (
@ -55,7 +55,5 @@ func main() {
os.Exit(2)
}
if err = server.Run(); err != nil {
log.Fatal(err)
}
log.Fatal(server.Run())
}

View File

@ -1,18 +1,13 @@
package main
import (
"encoding/binary"
"fmt"
"os"
"os/signal"
"strings"
"syscall"
"time"
log "github.com/sirupsen/logrus"
"github.com/tidwall/redcon"
"git.mills.io/prologic/bitcask"
"github.com/prologic/bitcask"
)
type server struct {
@ -34,47 +29,25 @@ func newServer(bind, dbpath string) (*server, error) {
}
func (s *server) handleSet(cmd redcon.Command, conn redcon.Conn) {
if len(cmd.Args) != 3 && len(cmd.Args) != 4 {
if len(cmd.Args) != 3 {
conn.WriteError("ERR wrong number of arguments for '" + string(cmd.Args[0]) + "' command")
return
}
var ttl *time.Duration
key := cmd.Args[1]
value := cmd.Args[2]
if len(cmd.Args) == 4 {
val, n := binary.Varint(cmd.Args[3])
if n <= 0 {
conn.WriteError("ERR error parsing ttl")
return
}
d := time.Duration(val) * time.Millisecond
ttl = &d
}
if ttl != nil {
if err := s.db.PutWithTTL(key, value, *ttl); err != nil {
conn.WriteString(fmt.Sprintf("ERR: %s", err))
}
} else {
if err := s.db.Put(key, value); err != nil {
conn.WriteString(fmt.Sprintf("ERR: %s", err))
}
}
} else {
conn.WriteString("OK")
}
}
func (s *server) handleGet(cmd redcon.Command, conn redcon.Conn) {
if len(cmd.Args) != 2 {
conn.WriteError("ERR wrong number of arguments for '" + string(cmd.Args[0]) + "' command")
return
}
key := cmd.Args[1]
value, err := s.db.Get(key)
if err != nil {
conn.WriteNull()
@ -84,41 +57,10 @@ func (s *server) handleGet(cmd redcon.Command, conn redcon.Conn) {
}
func (s *server) handleKeys(cmd redcon.Command, conn redcon.Conn) {
if len(cmd.Args) != 2 {
conn.WriteError("ERR wrong number of arguments for '" + string(cmd.Args[0]) + "' command")
return
}
pattern := string(cmd.Args[1])
// Fast-track condition for improved speed
if pattern == "*" {
conn.WriteArray(s.db.Len())
for key := range s.db.Keys() {
conn.WriteBulk(key)
conn.WriteBulk([]byte(key))
}
return
}
// Prefix handling
if strings.Count(pattern, "*") == 1 && strings.HasSuffix(pattern, "*") {
prefix := strings.ReplaceAll(pattern, "*", "")
count := 0
keys := make([][]byte, 0)
s.db.Scan([]byte(prefix), func(key []byte) error {
keys = append(keys, key)
count++
return nil
})
conn.WriteArray(count)
for _, key := range keys {
conn.WriteBulk(key)
}
return
}
// No results means empty array
conn.WriteArray(0)
}
func (s *server) handleExists(cmd redcon.Command, conn redcon.Conn) {
@ -126,9 +68,7 @@ func (s *server) handleExists(cmd redcon.Command, conn redcon.Conn) {
conn.WriteError("ERR wrong number of arguments for '" + string(cmd.Args[0]) + "' command")
return
}
key := cmd.Args[1]
if s.db.Has(key) {
conn.WriteInt(1)
} else {
@ -141,9 +81,7 @@ func (s *server) handleDel(cmd redcon.Command, conn redcon.Conn) {
conn.WriteError("ERR wrong number of arguments for '" + string(cmd.Args[0]) + "' command")
return
}
key := cmd.Args[1]
if err := s.db.Delete(key); err != nil {
conn.WriteInt(0)
} else {
@ -151,13 +89,8 @@ func (s *server) handleDel(cmd redcon.Command, conn redcon.Conn) {
}
}
func (s *server) Shutdown() (err error) {
err = s.db.Close()
return
}
func (s *server) Run() (err error) {
redServer := redcon.NewServerNetwork("tcp", s.bind,
err = redcon.ListenAndServe(s.bind,
func(conn redcon.Conn, cmd redcon.Command) {
switch strings.ToLower(string(cmd.Args[0])) {
case "ping":
@ -185,17 +118,5 @@ func (s *server) Run() (err error) {
func(conn redcon.Conn, err error) {
},
)
go func() {
signals := make(chan os.Signal, 1)
signal.Notify(signals, os.Interrupt, syscall.SIGTERM)
s := <-signals
log.Infof("Shutdown server on signal %s", s)
redServer.Close()
}()
if err := redServer.ListenAndServe(); err == nil {
return s.Shutdown()
}
return
}

View File

@ -1,102 +0,0 @@
package main
import (
"net"
"strconv"
"testing"
"github.com/tidwall/redcon"
)
func TestHandleKeys(t *testing.T) {
s, err := newServer(":61234", "./test.db")
if err != nil {
t.Fatalf("Unable to create server: %v", err)
}
s.db.Put([]byte("foo"), []byte("bar"))
testCases := []TestCase{
{
Command: redcon.Command{
Raw: []byte("KEYS *"),
Args: [][]byte{[]byte("KEYS"), []byte("*")},
},
Expected: "1,foo",
},
{
Command: redcon.Command{
Raw: []byte("KEYS fo*"),
Args: [][]byte{[]byte("KEYS"), []byte("fo*")},
},
Expected: "1,foo",
},
{
Command: redcon.Command{
Raw: []byte("KEYS ba*"),
Args: [][]byte{[]byte("KEYS"), []byte("ba*")},
},
Expected: "0",
},
{
Command: redcon.Command{
Raw: []byte("KEYS *oo"),
Args: [][]byte{[]byte("KEYS"), []byte("*oo")},
},
Expected: "0",
},
}
for _, testCase := range testCases {
conn := DummyConn{}
s.handleKeys(testCase.Command, &conn)
if testCase.Expected != conn.Result {
t.Fatalf("s.handleKeys failed: expected '%s', got '%s'", testCase.Expected, conn.Result)
}
}
}
type TestCase struct {
Command redcon.Command
Expected string
}
type DummyConn struct {
Result string
}
func (dc *DummyConn) RemoteAddr() string {
return ""
}
func (dc *DummyConn) Close() error {
return nil
}
func (dc *DummyConn) WriteError(msg string) {}
func (dc *DummyConn) WriteString(str string) {}
func (dc *DummyConn) WriteBulk(bulk []byte) {
dc.Result += "," + string(bulk)
}
func (dc *DummyConn) WriteBulkString(bulk string) {}
func (dc *DummyConn) WriteInt(num int) {}
func (dc *DummyConn) WriteInt64(num int64) {}
func (dc *DummyConn) WriteUint64(num uint64) {}
func (dc *DummyConn) WriteArray(count int) {
dc.Result = strconv.Itoa(count)
}
func (dc *DummyConn) WriteNull() {}
func (dc *DummyConn) WriteRaw(data []byte) {}
func (dc *DummyConn) WriteAny(any interface{}) {}
func (dc *DummyConn) Context() interface{} {
return nil
}
func (dc *DummyConn) SetContext(v interface{}) {}
func (dc *DummyConn) SetReadBuffer(bytes int) {}
func (dc *DummyConn) Detach() redcon.DetachedConn {
return nil
}
func (dc *DummyConn) ReadPipeline() []redcon.Command {
return nil
}
func (dc *DummyConn) PeekPipeline() []redcon.Command {
return nil
}
func (dc *DummyConn) NetConn() net.Conn {
return nil
}

View File

@ -1,77 +0,0 @@
package bitcask
import (
"errors"
"fmt"
)
var (
// ErrKeyNotFound is the error returned when a key is not found
ErrKeyNotFound = errors.New("error: key not found")
// ErrKeyTooLarge is the error returned for a key that exceeds the
// maximum allowed key size (configured with WithMaxKeySize).
ErrKeyTooLarge = errors.New("error: key too large")
// ErrKeyExpired is the error returned when a key is queried which has
// already expired (due to ttl)
ErrKeyExpired = errors.New("error: key expired")
// ErrEmptyKey is the error returned for a value with an empty key.
ErrEmptyKey = errors.New("error: empty key")
// ErrValueTooLarge is the error returned for a value that exceeds the
// maximum allowed value size (configured with WithMaxValueSize).
ErrValueTooLarge = errors.New("error: value too large")
// ErrChecksumFailed is the error returned if a key/value retrieved does
// not match its CRC checksum
ErrChecksumFailed = errors.New("error: checksum failed")
// ErrDatabaseLocked is the error returned if the database is locked
// (typically opened by another process)
ErrDatabaseLocked = errors.New("error: database locked")
// ErrInvalidRange is the error returned when the range scan is invalid
ErrInvalidRange = errors.New("error: invalid range")
// ErrInvalidVersion is the error returned when the database version is invalid
ErrInvalidVersion = errors.New("error: invalid db version")
// ErrMergeInProgress is the error returned if merge is called when already a merge
// is in progress
ErrMergeInProgress = errors.New("error: merge already in progress")
)
// ErrBadConfig is the error returned on failure to load the database config
type ErrBadConfig struct {
Err error
}
func (e *ErrBadConfig) Is(target error) bool {
if _, ok := target.(*ErrBadConfig); ok {
return true
}
return errors.Is(e.Err, target)
}
func (e *ErrBadConfig) Unwrap() error { return e.Err }
func (e *ErrBadConfig) Error() string {
return fmt.Sprintf("error reading config.json: %s", e.Err)
}
// ErrBadMetadata is the error returned on failure to load the database metadata
type ErrBadMetadata struct {
Err error
}
func (e *ErrBadMetadata) Is(target error) bool {
if _, ok := target.(*ErrBadMetadata); ok {
return true
}
return errors.Is(e.Err, target)
}
func (e *ErrBadMetadata) Unwrap() error { return e.Err }
func (e *ErrBadMetadata) Error() string {
return fmt.Sprintf("error reading meta.json: %s", e.Err)
}

33
go.mod
View File

@ -1,18 +1,23 @@
module git.mills.io/prologic/bitcask
module github.com/prologic/bitcask
go 1.16
go 1.13
require (
github.com/abcum/lcp v0.0.0-20201209214815-7a3f3840be81
github.com/gofrs/flock v0.8.0
github.com/pkg/errors v0.9.1
github.com/plar/go-adaptive-radix-tree v1.0.4
github.com/sirupsen/logrus v1.8.1
github.com/spf13/cobra v0.0.7
github.com/spf13/pflag v1.0.5
github.com/spf13/viper v1.8.1
github.com/stretchr/objx v0.2.0 // indirect
github.com/stretchr/testify v1.7.0
github.com/tidwall/redcon v1.4.1
golang.org/x/exp v0.0.0-20200228211341-fcea875c7e85
github.com/gofrs/flock v0.7.1
github.com/konsorten/go-windows-terminal-sequences v1.0.2 // indirect
github.com/magiconair/properties v1.8.1 // indirect
github.com/pelletier/go-toml v1.4.0 // indirect
github.com/pkg/errors v0.8.1
github.com/plar/go-adaptive-radix-tree v1.0.1
github.com/sirupsen/logrus v1.4.2
github.com/spf13/afero v1.2.2 // indirect
github.com/spf13/cobra v0.0.5
github.com/spf13/jwalterweatherman v1.1.0 // indirect
github.com/spf13/pflag v1.0.3
github.com/spf13/viper v1.4.0
github.com/stretchr/testify v1.3.0
github.com/tidwall/redcon v1.0.0
golang.org/x/exp v0.0.0-20190731235908-ec7cb31e5a56
golang.org/x/sys v0.0.0-20190804053845-51ab0e2deafa // indirect
golang.org/x/text v0.3.2 // indirect
)

597
go.sum
View File

@ -1,692 +1,191 @@
cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
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github.com/yuin/goldmark v1.1.25/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
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golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
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golang.org/x/exp v0.0.0-20190829153037-c13cbed26979/go.mod h1:86+5VVa7VpoJ4kLfm080zCjGlMRFzhUhsZKEZO7MGek=
golang.org/x/exp v0.0.0-20191030013958-a1ab85dbe136/go.mod h1:JXzH8nQsPlswgeRAPE3MuO9GYsAcnJvJ4vnMwN/5qkY=
golang.org/x/exp v0.0.0-20191129062945-2f5052295587/go.mod h1:2RIsYlXP63K8oxa1u096TMicItID8zy7Y6sNkU49FU4=
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golang.org/x/exp v0.0.0-20200119233911-0405dc783f0a/go.mod h1:2RIsYlXP63K8oxa1u096TMicItID8zy7Y6sNkU49FU4=
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google.golang.org/api v0.24.0/go.mod h1:lIXQywCXRcnZPGlsd8NbLnOjtAoL6em04bJ9+z0MncE=
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google.golang.org/api v0.30.0/go.mod h1:QGmEvQ87FHZNiUVJkT14jQNYJ4ZJjdRF23ZXz5138Fc=
google.golang.org/api v0.35.0/go.mod h1:/XrVsuzM0rZmrsbjJutiuftIzeuTQcEeaYcSk/mQ1dg=
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google.golang.org/api v0.40.0/go.mod h1:fYKFpnQN0DsDSKRVRcQSDQNtqWPfM9i+zNPxepjRCQ8=
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google.golang.org/api v0.44.0/go.mod h1:EBOGZqzyhtvMDoxwS97ctnh0zUmYY6CxqXsc1AvkYD8=
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google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGjtUeSXeh4=
google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
gopkg.in/ini.v1 v1.62.0 h1:duBzk771uxoUuOlyRLkHsygud9+5lrlGjdFBb4mSKDU=
gopkg.in/ini.v1 v1.62.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
gopkg.in/yaml.v2 v2.0.0-20170812160011-eb3733d160e7/go.mod h1:JAlM8MvJe8wmxCU4Bli9HhUf9+ttbYbLASfIpnQbh74=
gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
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gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=

View File

@ -12,10 +12,6 @@ type Config struct {
MaxKeySize uint32 `json:"max_key_size"`
MaxValueSize uint64 `json:"max_value_size"`
Sync bool `json:"sync"`
AutoRecovery bool `json:"autorecovery"`
DBVersion uint32 `json:"db_version"`
DirFileModeBeforeUmask os.FileMode
FileFileModeBeforeUmask os.FileMode
}
// Load loads a configuration from the given path
@ -36,16 +32,23 @@ func Load(path string) (*Config, error) {
// Save saves the configuration to the provided path
func (c *Config) Save(path string) error {
f, err := os.OpenFile(path, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0600)
if err != nil {
return err
}
data, err := json.Marshal(c)
if err != nil {
return err
}
err = ioutil.WriteFile(path, data, c.FileFileModeBeforeUmask)
if err != nil {
if _, err = f.Write(data); err != nil {
return err
}
return nil
if err = f.Sync(); err != nil {
return err
}
return f.Close()
}

View File

@ -3,10 +3,9 @@ package codec
import (
"encoding/binary"
"io"
"time"
"github.com/pkg/errors"
"git.mills.io/prologic/bitcask/internal"
"github.com/prologic/bitcask/internal"
)
var (
@ -50,13 +49,13 @@ func (d *Decoder) Decode(v *internal.Entry) (int64, error) {
return 0, err
}
buf := make([]byte, uint64(actualKeySize)+actualValueSize+checksumSize+ttlSize)
buf := make([]byte, uint64(actualKeySize)+actualValueSize+checksumSize)
if _, err = io.ReadFull(d.r, buf); err != nil {
return 0, errTruncatedData
}
decodeWithoutPrefix(buf, actualKeySize, v)
return int64(keySize + valueSize + uint64(actualKeySize) + actualValueSize + checksumSize + ttlSize), nil
return int64(keySize + valueSize + uint64(actualKeySize) + actualValueSize + checksumSize), nil
}
// DecodeEntry decodes a serialized entry
@ -75,7 +74,7 @@ func getKeyValueSizes(buf []byte, maxKeySize uint32, maxValueSize uint64) (uint3
actualKeySize := binary.BigEndian.Uint32(buf[:keySize])
actualValueSize := binary.BigEndian.Uint64(buf[keySize:])
if (maxKeySize > 0 && actualKeySize > maxKeySize) || (maxValueSize > 0 && actualValueSize > maxValueSize) || actualKeySize == 0 {
if actualKeySize > maxKeySize || actualValueSize > maxValueSize || actualKeySize == 0 {
return 0, 0, errInvalidKeyOrValueSize
}
@ -85,18 +84,8 @@ func getKeyValueSizes(buf []byte, maxKeySize uint32, maxValueSize uint64) (uint3
func decodeWithoutPrefix(buf []byte, valueOffset uint32, v *internal.Entry) {
v.Key = buf[:valueOffset]
v.Value = buf[valueOffset : len(buf)-checksumSize-ttlSize]
v.Checksum = binary.BigEndian.Uint32(buf[len(buf)-checksumSize-ttlSize : len(buf)-ttlSize])
v.Expiry = getKeyExpiry(buf)
}
func getKeyExpiry(buf []byte) *time.Time {
expiry := binary.BigEndian.Uint64(buf[len(buf)-ttlSize:])
if expiry == uint64(0) {
return nil
}
t := time.Unix(int64(expiry), 0).UTC()
return &t
v.Value = buf[valueOffset : len(buf)-checksumSize]
v.Checksum = binary.BigEndian.Uint32(buf[len(buf)-checksumSize:])
}
// IsCorruptedData indicates if the error correspondes to possible data corruption

View File

@ -5,9 +5,8 @@ import (
"encoding/binary"
"io"
"testing"
"time"
"git.mills.io/prologic/bitcask/internal"
"github.com/prologic/bitcask/internal"
"github.com/stretchr/testify/assert"
)
@ -108,23 +107,3 @@ func TestTruncatedData(t *testing.T) {
})
}
}
func TestDecodeWithoutPrefix(t *testing.T) {
assert := assert.New(t)
e := internal.Entry{}
buf := []byte{0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0, 7, 109, 121, 107, 101, 121, 109, 121, 118, 97, 108, 117, 101, 0, 6, 81, 189, 0, 0, 0, 0, 95, 117, 28, 0}
valueOffset := uint32(5)
mockTime := time.Date(2020, 10, 1, 0, 0, 0, 0, time.UTC)
expectedEntry := internal.Entry{
Key: []byte("mykey"),
Value: []byte("myvalue"),
Checksum: 414141,
Expiry: &mockTime,
}
decodeWithoutPrefix(buf[keySize+valueSize:], valueOffset, &e)
assert.Equal(expectedEntry.Key, e.Key)
assert.Equal(expectedEntry.Value, e.Value)
assert.Equal(expectedEntry.Checksum, e.Checksum)
assert.Equal(expectedEntry.Offset, e.Offset)
assert.Equal(*expectedEntry.Expiry, *e.Expiry)
}

View File

@ -6,15 +6,13 @@ import (
"io"
"github.com/pkg/errors"
"git.mills.io/prologic/bitcask/internal"
"github.com/prologic/bitcask/internal"
)
const (
keySize = 4
valueSize = 8
checksumSize = 4
ttlSize = 8
MetaInfoSize = keySize + valueSize + checksumSize + ttlSize
)
// NewEncoder creates a streaming Entry encoder.
@ -51,19 +49,9 @@ func (e *Encoder) Encode(msg internal.Entry) (int64, error) {
return 0, errors.Wrap(err, "failed writing checksum data")
}
bufTTL := bufKeyValue[:ttlSize]
if msg.Expiry == nil {
binary.BigEndian.PutUint64(bufTTL, uint64(0))
} else {
binary.BigEndian.PutUint64(bufTTL, uint64(msg.Expiry.Unix()))
}
if _, err := e.w.Write(bufTTL); err != nil {
return 0, errors.Wrap(err, "failed writing ttl data")
}
if err := e.w.Flush(); err != nil {
return 0, errors.Wrap(err, "failed flushing data")
}
return int64(keySize + valueSize + len(msg.Key) + len(msg.Value) + checksumSize + ttlSize), nil
return int64(keySize + valueSize + len(msg.Key) + len(msg.Value) + checksumSize), nil
}

View File

@ -4,9 +4,8 @@ import (
"bytes"
"encoding/hex"
"testing"
"time"
"git.mills.io/prologic/bitcask/internal"
"github.com/prologic/bitcask/internal"
"github.com/stretchr/testify/assert"
)
@ -15,17 +14,15 @@ func TestEncode(t *testing.T) {
assert := assert.New(t)
var buf bytes.Buffer
mockTime := time.Date(2020, 10, 1, 0, 0, 0, 0, time.UTC)
encoder := NewEncoder(&buf)
_, err := encoder.Encode(internal.Entry{
Key: []byte("mykey"),
Value: []byte("myvalue"),
Checksum: 414141,
Offset: 424242,
Expiry: &mockTime,
})
expectedHex := "0000000500000000000000076d796b65796d7976616c7565000651bd000000005f751c00"
expectedHex := "0000000500000000000000076d796b65796d7976616c7565000651bd"
if assert.NoError(err) {
assert.Equal(expectedHex, hex.EncodeToString(buf.Bytes()))
}

View File

@ -6,9 +6,9 @@ import (
"path/filepath"
"sync"
"git.mills.io/prologic/bitcask/internal"
"git.mills.io/prologic/bitcask/internal/data/codec"
"github.com/pkg/errors"
"github.com/prologic/bitcask/internal"
"github.com/prologic/bitcask/internal/data/codec"
"golang.org/x/exp/mmap"
)
@ -19,6 +19,8 @@ const (
var (
errReadonly = errors.New("error: read only datafile")
errReadError = errors.New("error: read error")
mxMemPool sync.RWMutex
)
// Datafile is an interface that represents a readable and writeable datafile
@ -48,7 +50,7 @@ type datafile struct {
}
// NewDatafile opens an existing datafile
func NewDatafile(path string, id int, readonly bool, maxKeySize uint32, maxValueSize uint64, fileMode os.FileMode) (Datafile, error) {
func NewDatafile(path string, id int, readonly bool, maxKeySize uint32, maxValueSize uint64) (Datafile, error) {
var (
r *os.File
ra *mmap.ReaderAt
@ -59,7 +61,7 @@ func NewDatafile(path string, id int, readonly bool, maxKeySize uint32, maxValue
fn := filepath.Join(path, fmt.Sprintf(defaultDatafileFilename, id))
if !readonly {
w, err = os.OpenFile(fn, os.O_WRONLY|os.O_APPEND|os.O_CREATE, fileMode)
w, err = os.OpenFile(fn, os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0640)
if err != nil {
return nil, err
}
@ -74,12 +76,10 @@ func NewDatafile(path string, id int, readonly bool, maxKeySize uint32, maxValue
return nil, errors.Wrap(err, "error calling Stat()")
}
if readonly {
ra, err = mmap.Open(fn)
if err != nil {
return nil, err
}
}
offset := stat.Size()
@ -109,9 +109,7 @@ func (df *datafile) Name() string {
func (df *datafile) Close() error {
defer func() {
if df.ra != nil {
df.ra.Close()
}
df.r.Close()
}()
@ -159,10 +157,7 @@ func (df *datafile) ReadAt(index, size int64) (e internal.Entry, err error) {
b := make([]byte, size)
df.RLock()
defer df.RUnlock()
if df.ra != nil {
if df.w == nil {
n, err = df.ra.ReadAt(b, index)
} else {
n, err = df.r.ReadAt(b, index)

View File

@ -1,95 +0,0 @@
package data
import (
"fmt"
"io"
"os"
"path/filepath"
"git.mills.io/prologic/bitcask/internal"
"git.mills.io/prologic/bitcask/internal/config"
"git.mills.io/prologic/bitcask/internal/data/codec"
)
// CheckAndRecover checks and recovers the last datafile.
// If the datafile isn't corrupted, this is a noop. If it is,
// the longest non-corrupted prefix will be kept and the rest
// will be *deleted*. Also, the index file is also *deleted* which
// will be automatically recreated on next startup.
func CheckAndRecover(path string, cfg *config.Config) error {
dfs, err := internal.GetDatafiles(path)
if err != nil {
return fmt.Errorf("scanning datafiles: %s", err)
}
if len(dfs) == 0 {
return nil
}
f := dfs[len(dfs)-1]
recovered, err := recoverDatafile(f, cfg)
if err != nil {
return fmt.Errorf("error recovering data file: %s", err)
}
if recovered {
if err := os.Remove(filepath.Join(path, "index")); err != nil {
return fmt.Errorf("error deleting the index on recovery: %s", err)
}
}
return nil
}
func recoverDatafile(path string, cfg *config.Config) (recovered bool, err error) {
f, err := os.Open(path)
if err != nil {
return false, fmt.Errorf("opening the datafile: %s", err)
}
defer func() {
closeErr := f.Close()
if err == nil {
err = closeErr
}
}()
dir, file := filepath.Split(path)
rPath := filepath.Join(dir, fmt.Sprintf("%s.recovered", file))
fr, err := os.OpenFile(rPath, os.O_CREATE|os.O_WRONLY, os.ModePerm)
if err != nil {
return false, fmt.Errorf("creating the recovered datafile: %w", err)
}
defer func() {
closeErr := fr.Close()
if err == nil {
err = closeErr
}
}()
dec := codec.NewDecoder(f, cfg.MaxKeySize, cfg.MaxValueSize)
enc := codec.NewEncoder(fr)
e := internal.Entry{}
corrupted := false
for !corrupted {
_, err = dec.Decode(&e)
if err == io.EOF {
break
}
if codec.IsCorruptedData(err) {
corrupted = true
continue
}
if err != nil {
return false, fmt.Errorf("unexpected error while reading datafile: %w", err)
}
if _, err := enc.Encode(e); err != nil {
return false, fmt.Errorf("writing to recovered datafile: %w", err)
}
}
if !corrupted {
if err := os.Remove(fr.Name()); err != nil {
return false, fmt.Errorf("can't remove temporal recovered datafile: %w", err)
}
return false, nil
}
if err := os.Rename(rPath, path); err != nil {
return false, fmt.Errorf("removing corrupted file: %s", err)
}
return true, nil
}

View File

@ -2,7 +2,6 @@ package internal
import (
"hash/crc32"
"time"
)
// Entry represents a key/value in the database
@ -11,17 +10,15 @@ type Entry struct {
Key []byte
Offset int64
Value []byte
Expiry *time.Time
}
// NewEntry creates a new `Entry` with the given `key` and `value`
func NewEntry(key, value []byte, expiry *time.Time) Entry {
func NewEntry(key, value []byte) Entry {
checksum := crc32.ChecksumIEEE(value)
return Entry{
Checksum: checksum,
Key: key,
Value: value,
Expiry: expiry,
}
}

View File

@ -6,7 +6,7 @@ import (
"github.com/pkg/errors"
art "github.com/plar/go-adaptive-radix-tree"
"git.mills.io/prologic/bitcask/internal"
"github.com/prologic/bitcask/internal"
)
var (
@ -34,7 +34,7 @@ func readKeyBytes(r io.Reader, maxKeySize uint32) ([]byte, error) {
return nil, errors.Wrap(errTruncatedKeySize, err.Error())
}
size := binary.BigEndian.Uint32(s)
if maxKeySize > 0 && size > uint32(maxKeySize) {
if size > uint32(maxKeySize) {
return nil, errKeySizeTooLarge
}
@ -117,7 +117,11 @@ func writeIndex(t art.Tree, w io.Writer) (err error) {
item := node.Value().(internal.Item)
err := writeItem(item, w)
return err == nil
if err != nil {
return false
}
return true
})
return
}

View File

@ -8,7 +8,7 @@ import (
"github.com/pkg/errors"
art "github.com/plar/go-adaptive-radix-tree"
"git.mills.io/prologic/bitcask/internal"
"github.com/prologic/bitcask/internal"
)
const (

View File

@ -4,7 +4,7 @@ import (
"os"
art "github.com/plar/go-adaptive-radix-tree"
"git.mills.io/prologic/bitcask/internal"
"github.com/prologic/bitcask/internal"
)
// Indexer is an interface for loading and saving the index (an Adaptive Radix Tree)

View File

@ -1,71 +0,0 @@
package index
import (
"encoding/binary"
"io"
"os"
"time"
art "github.com/plar/go-adaptive-radix-tree"
"git.mills.io/prologic/bitcask/internal"
)
type ttlIndexer struct{}
func NewTTLIndexer() Indexer {
return ttlIndexer{}
}
func (i ttlIndexer) Save(t art.Tree, path string) error {
f, err := os.OpenFile(path, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)
if err != nil {
return err
}
buf := make([]byte, int64Size)
for it := t.Iterator(); it.HasNext(); {
node, err := it.Next()
if err != nil {
return err
}
// save key
err = writeBytes(node.Key(), f)
if err != nil {
return err
}
// save key ttl
binary.BigEndian.PutUint64(buf, uint64(node.Value().(time.Time).Unix()))
_, err = f.Write(buf)
if err != nil {
return err
}
}
return f.Sync()
}
func (i ttlIndexer) Load(path string, maxKeySize uint32) (art.Tree, bool, error) {
t := art.New()
if !internal.Exists(path) {
return t, false, nil
}
f, err := os.Open(path)
if err != nil {
return t, true, err
}
buf := make([]byte, int64Size)
for {
key, err := readKeyBytes(f, maxKeySize)
if err != nil {
if err == io.EOF {
break
}
return t, true, err
}
_, err = io.ReadFull(f, buf)
if err != nil {
return t, true, err
}
expiry := time.Unix(int64(binary.BigEndian.Uint64(buf)), 0).UTC()
t.Insert(key, expiry)
}
return t, true, nil
}

View File

@ -1,54 +0,0 @@
package index
import (
"io/ioutil"
"os"
"path/filepath"
"testing"
"time"
art "github.com/plar/go-adaptive-radix-tree"
assert2 "github.com/stretchr/testify/assert"
)
func Test_TTLIndexer(t *testing.T) {
assert := assert2.New(t)
tempDir, err := ioutil.TempDir("", "bitcask")
assert.NoError(err)
defer os.RemoveAll(tempDir)
currTime := time.Date(2020, 12, 27, 0, 0, 0, 0, time.UTC)
trie := art.New()
t.Run("LoadEmpty", func(t *testing.T) {
newTrie, found, err := NewTTLIndexer().Load(filepath.Join(tempDir, "ttl_index"), 4)
assert.NoError(err)
assert.False(found)
assert.Equal(trie, newTrie)
})
t.Run("Save", func(t *testing.T) {
trie.Insert([]byte("key"), currTime)
err := NewTTLIndexer().Save(trie, filepath.Join(tempDir, "ttl_index"))
assert.NoError(err)
trie.Insert([]byte("foo"), currTime.Add(24*time.Hour))
err = NewTTLIndexer().Save(trie, filepath.Join(tempDir, "ttl_index"))
assert.NoError(err)
trie.Insert([]byte("key"), currTime.Add(-24*time.Hour))
err = NewTTLIndexer().Save(trie, filepath.Join(tempDir, "ttl_index"))
assert.NoError(err)
})
t.Run("Load", func(t *testing.T) {
newTrie, found, err := NewTTLIndexer().Load(filepath.Join(tempDir, "ttl_index"), 4)
assert.NoError(err)
assert.True(found)
assert.Equal(2, newTrie.Size())
value, found := newTrie.Search([]byte("key"))
assert.True(found)
assert.Equal(currTime.Add(-24*time.Hour), value)
value, found = newTrie.Search([]byte("foo"))
assert.True(found)
assert.Equal(currTime.Add(24*time.Hour), value)
})
}

View File

@ -1,22 +0,0 @@
package metadata
import (
"os"
"git.mills.io/prologic/bitcask/internal"
)
type MetaData struct {
IndexUpToDate bool `json:"index_up_to_date"`
ReclaimableSpace int64 `json:"reclaimable_space"`
}
func (m *MetaData) Save(path string, mode os.FileMode) error {
return internal.SaveJsonToFile(m, path, mode)
}
func Load(path string) (*MetaData, error) {
var m MetaData
err := internal.LoadFromJsonFile(path, &m)
return &m, err
}

View File

@ -2,7 +2,7 @@
package mocks
import internal "git.mills.io/prologic/bitcask/internal"
import internal "github.com/prologic/bitcask/internal"
import mock "github.com/stretchr/testify/mock"
// Datafile is an autogenerated mock type for the Datafile type

View File

@ -1,9 +1,7 @@
package internal
import (
"encoding/json"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"sort"
@ -35,8 +33,7 @@ func DirSize(path string) (int64, error) {
// GetDatafiles returns a list of all data files stored in the database path
// given by `path`. All datafiles are identified by the the glob `*.data` and
// the basename is represented by a monotonic increasing integer.
// The returned files are *sorted* in increasing order.
// the basename is represented by an monotomic increasing integer.
func GetDatafiles(path string) ([]string, error) {
fns, err := filepath.Glob(fmt.Sprintf("%s/*.data", path))
if err != nil {
@ -65,48 +62,3 @@ func ParseIds(fns []string) ([]int, error) {
sort.Ints(ids)
return ids, nil
}
// Copy copies source contents to destination
func Copy(src, dst string, exclude []string) error {
return filepath.Walk(src, func(path string, info os.FileInfo, err error) error {
relPath := strings.Replace(path, src, "", 1)
if relPath == "" {
return nil
}
for _, e := range exclude {
matched, err := filepath.Match(e, info.Name())
if err != nil {
return err
}
if matched {
return nil
}
}
if info.IsDir() {
return os.Mkdir(filepath.Join(dst, relPath), info.Mode())
}
var data, err1 = ioutil.ReadFile(filepath.Join(src, relPath))
if err1 != nil {
return err1
}
return ioutil.WriteFile(filepath.Join(dst, relPath), data, info.Mode())
})
}
// SaveJsonToFile converts v into json and store in file identified by path
func SaveJsonToFile(v interface{}, path string, mode os.FileMode) error {
b, err := json.Marshal(v)
if err != nil {
return err
}
return ioutil.WriteFile(path, b, mode)
}
// LoadFromJsonFile reads file located at `path` and put its content in json format in v
func LoadFromJsonFile(path string, v interface{}) error {
b, err := ioutil.ReadFile(path)
if err != nil {
return err
}
return json.Unmarshal(b, v)
}

View File

@ -1,108 +0,0 @@
package internal
import (
"io"
"io/ioutil"
"os"
"path/filepath"
"testing"
"github.com/stretchr/testify/assert"
)
func Test_Copy(t *testing.T) {
assert := assert.New(t)
t.Run("CopyDir", func(t *testing.T) {
tempsrc, err := ioutil.TempDir("", "test")
assert.NoError(err)
defer os.RemoveAll(tempsrc)
var f *os.File
tempdir, err := ioutil.TempDir(tempsrc, "")
assert.NoError(err)
f, err = os.OpenFile(filepath.Join(tempsrc, "file1"), os.O_WRONLY|os.O_CREATE, 0755)
assert.NoError(err)
n, err := f.WriteString("test123")
assert.Equal(7, n)
assert.NoError(err)
f.Close()
f, err = os.OpenFile(filepath.Join(tempsrc, "file2"), os.O_WRONLY|os.O_CREATE, 0755)
assert.NoError(err)
n, err = f.WriteString("test1234")
assert.Equal(8, n)
assert.NoError(err)
f.Close()
f, err = os.OpenFile(filepath.Join(tempsrc, "file3"), os.O_WRONLY|os.O_CREATE, 0755)
assert.NoError(err)
f.Close()
tempdst, err := ioutil.TempDir("", "backup")
assert.NoError(err)
defer os.RemoveAll(tempdst)
err = Copy(tempsrc, tempdst, []string{"file3"})
assert.NoError(err)
buf := make([]byte, 10)
exists := Exists(filepath.Join(tempdst, filepath.Base(tempdir)))
assert.Equal(true, exists)
f, err = os.Open(filepath.Join(tempdst, "file1"))
assert.NoError(err)
n, err = f.Read(buf[:7])
assert.NoError(err)
assert.Equal(7, n)
assert.Equal([]byte("test123"), buf[:7])
_, err = f.Read(buf)
assert.Equal(io.EOF, err)
f.Close()
f, err = os.Open(filepath.Join(tempdst, "file2"))
assert.NoError(err)
n, err = f.Read(buf[:8])
assert.NoError(err)
assert.Equal(8, n)
assert.Equal([]byte("test1234"), buf[:8])
_, err = f.Read(buf)
assert.Equal(io.EOF, err)
f.Close()
exists = Exists(filepath.Join(tempdst, "file3"))
assert.Equal(false, exists)
})
}
func Test_SaveAndLoad(t *testing.T) {
assert := assert.New(t)
t.Run("save and load", func(t *testing.T) {
tempdir, err := ioutil.TempDir("", "bitcask")
assert.NoError(err)
defer os.RemoveAll(tempdir)
type test struct {
Value bool `json:"value"`
}
m := test{Value: true}
err = SaveJsonToFile(&m, filepath.Join(tempdir, "meta.json"), 0755)
assert.NoError(err)
m1 := test{}
err = LoadFromJsonFile(filepath.Join(tempdir, "meta.json"), &m1)
assert.NoError(err)
assert.Equal(m, m1)
})
t.Run("save and load error", func(t *testing.T) {
tempdir, err := ioutil.TempDir("", "bitcask")
assert.NoError(err)
defer os.RemoveAll(tempdir)
type test struct {
Value bool `json:"value"`
}
err = SaveJsonToFile(make(chan int), filepath.Join(tempdir, "meta.json"), 0755)
assert.Error(err)
m1 := test{}
err = LoadFromJsonFile(filepath.Join(tempdir, "meta.json"), &m1)
assert.Error(err)
})
}

View File

@ -1,18 +1,8 @@
package bitcask
import (
"os"
"git.mills.io/prologic/bitcask/internal/config"
)
import "github.com/prologic/bitcask/internal/config"
const (
// DefaultDirFileModeBeforeUmask is the default os.FileMode used when creating directories
DefaultDirFileModeBeforeUmask = os.FileMode(0700)
// DefaultFileFileModeBeforeUmask is the default os.FileMode used when creating files
DefaultFileFileModeBeforeUmask = os.FileMode(0600)
// DefaultMaxDatafileSize is the default maximum datafile size in bytes
DefaultMaxDatafileSize = 1 << 20 // 1MB
@ -24,54 +14,11 @@ const (
// DefaultSync is the default file synchronization action
DefaultSync = false
// DefaultAutoRecovery is the default auto-recovery action.
CurrentDBVersion = uint32(1)
)
// Option is a function that takes a config struct and modifies it
type Option func(*config.Config) error
func withConfig(src *config.Config) Option {
return func(cfg *config.Config) error {
cfg.MaxDatafileSize = src.MaxDatafileSize
cfg.MaxKeySize = src.MaxKeySize
cfg.MaxValueSize = src.MaxValueSize
cfg.Sync = src.Sync
cfg.AutoRecovery = src.AutoRecovery
cfg.DirFileModeBeforeUmask = src.DirFileModeBeforeUmask
cfg.FileFileModeBeforeUmask = src.FileFileModeBeforeUmask
return nil
}
}
// WithAutoRecovery sets auto recovery of data and index file recreation.
// IMPORTANT: This flag MUST BE used only if a proper backup was made of all
// the existing datafiles.
func WithAutoRecovery(enabled bool) Option {
return func(cfg *config.Config) error {
cfg.AutoRecovery = enabled
return nil
}
}
// WithDirFileModeBeforeUmask sets the FileMode used for each new file created.
func WithDirFileModeBeforeUmask(mode os.FileMode) Option {
return func(cfg *config.Config) error {
cfg.DirFileModeBeforeUmask = mode
return nil
}
}
// WithFileFileModeBeforeUmask sets the FileMode used for each new file created.
func WithFileFileModeBeforeUmask(mode os.FileMode) Option {
return func(cfg *config.Config) error {
cfg.FileFileModeBeforeUmask = mode
return nil
}
}
// WithMaxDatafileSize sets the maximum datafile size option
func WithMaxDatafileSize(size int) Option {
return func(cfg *config.Config) error {
@ -111,8 +58,5 @@ func newDefaultConfig() *config.Config {
MaxKeySize: DefaultMaxKeySize,
MaxValueSize: DefaultMaxValueSize,
Sync: DefaultSync,
DirFileModeBeforeUmask: DefaultDirFileModeBeforeUmask,
FileFileModeBeforeUmask: DefaultFileFileModeBeforeUmask,
DBVersion: CurrentDBVersion,
}
}

View File

@ -1,159 +0,0 @@
package migrations
import (
"encoding/binary"
"fmt"
"io"
"io/ioutil"
"os"
"path"
"path/filepath"
"git.mills.io/prologic/bitcask/internal"
)
const (
keySize = 4
valueSize = 8
checksumSize = 4
ttlSize = 8
defaultDatafileFilename = "%09d.data"
)
func ApplyV0ToV1(dir string, maxDatafileSize int) error {
temp, err := prepare(dir)
if err != nil {
return err
}
defer os.RemoveAll(temp)
err = apply(dir, temp, maxDatafileSize)
if err != nil {
return err
}
return cleanup(dir, temp)
}
func prepare(dir string) (string, error) {
return ioutil.TempDir(dir, "migration")
}
func apply(dir, temp string, maxDatafileSize int) error {
datafilesPath, err := internal.GetDatafiles(dir)
if err != nil {
return err
}
var id, newOffset int
datafile, err := getNewDatafile(temp, id)
if err != nil {
return err
}
id++
for _, p := range datafilesPath {
df, err := os.Open(p)
if err != nil {
return err
}
var off int64
for {
entry, err := getSingleEntry(df, off)
if err == io.EOF {
break
}
if err != nil {
return err
}
if newOffset+len(entry) > maxDatafileSize {
err = datafile.Sync()
if err != nil {
return err
}
datafile, err = getNewDatafile(temp, id)
if err != nil {
return err
}
id++
newOffset = 0
}
newEntry := make([]byte, len(entry)+ttlSize)
copy(newEntry[:len(entry)], entry)
n, err := datafile.Write(newEntry)
if err != nil {
return err
}
newOffset += n
off += int64(len(entry))
}
}
return datafile.Sync()
}
func cleanup(dir, temp string) error {
files, err := ioutil.ReadDir(dir)
if err != nil {
return err
}
for _, file := range files {
if !file.IsDir() {
err := os.RemoveAll(path.Join([]string{dir, file.Name()}...))
if err != nil {
return err
}
}
}
files, err = ioutil.ReadDir(temp)
if err != nil {
return err
}
for _, file := range files {
err := os.Rename(
path.Join([]string{temp, file.Name()}...),
path.Join([]string{dir, file.Name()}...),
)
if err != nil {
return err
}
}
return nil
}
func getNewDatafile(path string, id int) (*os.File, error) {
fn := filepath.Join(path, fmt.Sprintf(defaultDatafileFilename, id))
return os.OpenFile(fn, os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0640)
}
func getSingleEntry(f *os.File, offset int64) ([]byte, error) {
prefixBuf, err := readPrefix(f, offset)
if err != nil {
return nil, err
}
actualKeySize, actualValueSize := getKeyValueSize(prefixBuf)
entryBuf, err := read(f, uint64(actualKeySize)+actualValueSize+checksumSize, offset+keySize+valueSize)
if err != nil {
return nil, err
}
return append(prefixBuf, entryBuf...), nil
}
func readPrefix(f *os.File, offset int64) ([]byte, error) {
prefixBuf := make([]byte, keySize+valueSize)
_, err := f.ReadAt(prefixBuf, offset)
if err != nil {
return nil, err
}
return prefixBuf, nil
}
func read(f *os.File, bufSize uint64, offset int64) ([]byte, error) {
buf := make([]byte, bufSize)
_, err := f.ReadAt(buf, offset)
if err != nil {
return nil, err
}
return buf, nil
}
func getKeyValueSize(buf []byte) (uint32, uint64) {
actualKeySize := binary.BigEndian.Uint32(buf[:keySize])
actualValueSize := binary.BigEndian.Uint64(buf[keySize:])
return actualKeySize, actualValueSize
}

View File

@ -1,58 +0,0 @@
package migrations
import (
"encoding/binary"
"encoding/hex"
"io"
"io/ioutil"
"os"
"path/filepath"
"testing"
"github.com/stretchr/testify/assert"
)
func Test_ApplyV0ToV1(t *testing.T) {
assert := assert.New(t)
testdir, err := ioutil.TempDir("/tmp", "bitcask")
assert.NoError(err)
defer os.RemoveAll(testdir)
w0, err := os.OpenFile(filepath.Join(testdir, "000000000.data"), os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0640)
assert.NoError(err)
w1, err := os.OpenFile(filepath.Join(testdir, "000000001.data"), os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0640)
assert.NoError(err)
w2, err := os.OpenFile(filepath.Join(testdir, "000000002.data"), os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0640)
assert.NoError(err)
defer w0.Close()
defer w1.Close()
defer w2.Close()
buf := make([]byte, 104)
binary.BigEndian.PutUint32(buf[:4], 5)
binary.BigEndian.PutUint64(buf[4:12], 7)
copy(buf[12:28], "mykeymyvalue0AAA")
binary.BigEndian.PutUint32(buf[28:32], 3)
binary.BigEndian.PutUint64(buf[32:40], 5)
copy(buf[40:52], "keyvalue0BBB")
_, err = w0.Write(buf[:52])
assert.NoError(err)
_, err = w1.Write(buf[:52])
assert.NoError(err)
_, err = w2.Write(buf[:52])
assert.NoError(err)
err = ApplyV0ToV1(testdir, 104)
assert.NoError(err)
r0, err := os.Open(filepath.Join(testdir, "000000000.data"))
assert.NoError(err)
defer r0.Close()
n, err := io.ReadFull(r0, buf)
assert.NoError(err)
assert.Equal(104, n)
assert.Equal("0000000500000000000000076d796b65796d7976616c75653041414100000000000000000000000300000000000000056b657976616c75653042424200000000000000000000000500000000000000076d796b65796d7976616c7565304141410000000000000000", hex.EncodeToString(buf))
r1, err := os.Open(filepath.Join(testdir, "000000001.data"))
assert.NoError(err)
defer r1.Close()
n, err = io.ReadFull(r1, buf[:100])
assert.NoError(err)
assert.Equal(100, n)
assert.Equal("0000000300000000000000056b657976616c75653042424200000000000000000000000500000000000000076d796b65796d7976616c75653041414100000000000000000000000300000000000000056b657976616c7565304242420000000000000000", hex.EncodeToString(buf[:100]))
}

View File

@ -1,16 +1,13 @@
#!/bin/bash
#!/bin/sh
# Get the highest tag number
VERSION="$(git describe --abbrev=0 --tags)"
VERSION=${VERSION:-'0.0.0'}
# Get number parts
MAJOR="${VERSION%%.*}"
VERSION="${VERSION#*.}"
MINOR="${VERSION%%.*}"
VERSION="${VERSION#*.}"
PATCH="${VERSION%%.*}"
VERSION="${VERSION#*.}"
MAJOR="${VERSION%%.*}"; VERSION="${VERSION#*.}"
MINOR="${VERSION%%.*}"; VERSION="${VERSION#*.}"
PATCH="${VERSION%%.*}"; VERSION="${VERSION#*.}"
# Increase version
PATCH=$((PATCH+1))
@ -23,10 +20,6 @@ fi
echo "Releasing ${TAG} ..."
git-chglog --next-tag="${TAG}" --output CHANGELOG.md
git commit -a -m "Update CHANGELOG for ${TAG}"
git tag -a -s -m "Release ${TAG}" "${TAG}"
git push && git push --tags
goreleaser release \
--rm-dist \
--release-notes <(git-chglog "${TAG}" | tail -n+5)
git push --tags
goreleaser release --rm-dist