Golang Go语言中的go-watcher热重载轮子
Golang Go语言中的go-watcher热重载轮子
go-watcher
Golang 编写的热重载工具,自定义命令,支持监视文件及路径配置,环境变量配置。这是一个重复的轮子~
安装使用
go install github.com/yeqown/go-watcher/cmd/go-watcher
命令行
➜ go-watcher git:(master) ✗ ./go-watcher -h NAME: go-watcher - A new cli application
USAGE: go-watcher [global options] command [command options] [arguments…]
VERSION: 2.0.0
AUTHOR: [email protected]
COMMANDS: init generate a config file to specified postion run execute a command, and watch the files, if any change to these files, the command will reload help, h Shows a list of commands or help for one command
GLOBAL OPTIONS: –help, -h show help –version, -v print the version
配置文件
watcher: # 监视器配置
duration: 2000 # 文件修改时间间隔,只有高于这个间隔才回触发重载
included_filetypes: # 监视的文件扩展类型
- .go #
excluded_regexps: # 不被监视更改的文件正则表达式
- ^.gitignore$
- '*.yml$'
- '*.txt$'
additional_paths: [] # 除了当前文件夹需要额外监视的文件夹
excluded_paths: # 不需要监视的文件名,若为相对路径,只能对于当前路径生效
- vendor
- .git
envs: # 额外的环境变量
- GOROOT=/path/to/your/goroot
- GOPATH=/path/to/your/gopath
使用范例日志
➜ go-watcher git:(master) ✗ ./package/osx/go-watcher run -e "make" -c ./config.yml [INFO] directory (/Users/yeqown/Projects/opensource/go-watcher) is under watching [INFO] directory (/Users/yeqown/Projects/opensource/go-watcher/cmd) is under watching [INFO] directory (/Users/yeqown/Projects/opensource/go-watcher/cmd/go-watcher) is under watching [INFO] directory (/Users/yeqown/Projects/opensource/go-watcher/internal) is under watching [INFO] directory (/Users/yeqown/Projects/opensource/go-watcher/internal/command) is under watching [INFO] directory (/Users/yeqown/Projects/opensource/go-watcher/internal/log) is under watching [INFO] directory (/Users/yeqown/Projects/opensource/go-watcher/internal/testdata) is under watching [INFO] directory (/Users/yeqown/Projects/opensource/go-watcher/internal/testdata/exclude) is under watching [INFO] directory (/Users/yeqown/Projects/opensource/go-watcher/internal/testdata/testdata_inner) is under watching [INFO] directory (/Users/yeqown/Projects/opensource/go-watcher/package) is under watching [INFO] directory (/Users/yeqown/Projects/opensource/go-watcher/package/archived) is under watching [INFO] directory (/Users/yeqown/Projects/opensource/go-watcher/package/linux) is under watching [INFO] directory (/Users/yeqown/Projects/opensource/go-watcher/package/osx) is under watching [INFO] directory (/Users/yeqown/Projects/opensource/go-watcher/resources) is under watching [INFO] directory (/Users/yeqown/Projects/opensource/go-watcher/utils) is under watching [INFO] directory (/Users/yeqown/Projects/opensource/go-watcher/utils/testdata) is under watching [INFO] directory (/Users/yeqown/Projects/opensource/go-watcher/utils/testdata/testdata_inner) is under watching rm -fr package go build -o package/osx/go-watcher cmd/go-watcher/main.go GOOS=linux GOARCH=amd64 go build -o package/linux/go-watcher cmd/go-watcher/main.go mkdir -p package/archived tar -zcvf package/archived/go-watcher.osx.tar.gz package/osx a package/osx a package/osx/go-watcher tar -zcvf package/archived/go-watcher.linux.tar.gz package/linux a package/linux a package/linux/go-watcher [INFO] command executed done! [INFO] (/Users/yeqown/Projects/opensource/go-watcher/package/osx/go-watcher) is skipped, not target filetype [INFO] (/Users/yeqown/Projects/opensource/go-watcher/package/osx) is skipped, not target filetype [INFO] (/Users/yeqown/Projects/opensource/go-watcher/package) is skipped, not target filetype [INFO] (/Users/yeqown/Projects/opensource/go-watcher/package/linux/go-watcher) is skipped, not target filetype [INFO] (/Users/yeqown/Projects/opensource/go-watcher/package/linux) is skipped, not target filetype [INFO] (/Users/yeqown/Projects/opensource/go-watcher/package/archived/go-watcher.linux.tar.gz) is skipped, not target filetype [INFO] (/Users/yeqown/Projects/opensource/go-watcher/package/archived) is skipped, not target filetype [INFO] (/Users/yeqown/Projects/opensource/go-watcher/VERSION) is skipped, not target filetype [INFO] [/Users/yeqown/Projects/opensource/go-watcher/cmd/go-watcher/main.go] changed rm -fr package mkdir -p package/osx mkdir -p package/linux echo "2.0.0" > VERSION cp VERSION package/osx cp VERSION package/linux go build -o package/osx/go-watcher cmd/go-watcher/main.go GOOS=linux GOARCH=amd64 go build -o package/linux/go-watcher cmd/go-watcher/main.go mkdir -p package/archived tar -zcvf package/archived/go-watcher.osx.tar.gz package/osx a package/osx a package/osx/go-watcher a package/osx/VERSION tar -zcvf package/archived/go-watcher.linux.tar.gz package/linux a package/linux a package/linux/go-watcher[INFO] (/Users/yeqown/Projects/opensource/go-watcher/package/osx) is skipped, not target filetype [INFO] (/Users/yeqown/Projects/opensource/go-watcher/package/linux) is skipped, not target filetype
a package/linux/VERSION [INFO] command executed done! [INFO] (/Users/yeqown/Projects/opensource/go-watcher/package/osx) is skipped, not target filetype [INFO] (/Users/yeqown/Projects/opensource/go-watcher/package/archived) is skipped, not target filetype [INFO] (/Users/yeqown/Projects/opensource/go-watcher/package) is skipped, not target filetype [INFO] (/Users/yeqown/Projects/opensource/go-watcher/VERSION) is skipped, not target filetype [INFO] (/Users/yeqown/Projects/opensource/go-watcher/package) is skipped, not target filetype ^C[INFO] quit signal captured! [INFO] go-watcher exited ➜ go-watcher git:(master) ✗
更多关于Golang Go语言中的go-watcher热重载轮子的实战系列教程也可以访问 https://www.itying.com/category-94-b0.html
在Golang(Go语言)生态系统中,go-watcher
是一个用于实现热重载(hot-reload)功能的第三方库。热重载是一种开发时非常有用的特性,它允许开发者在代码更改后无需手动重启应用程序,而是自动重新加载代码,从而极大地提高了开发效率。
go-watcher
通过监控文件系统的变化来检测代码的更新。一旦检测到相关文件被修改,它会自动触发应用程序的重新加载。这种机制对于快速迭代和测试非常有帮助,尤其是在开发Web应用或微服务时。
使用go-watcher
通常涉及以下几个步骤:
-
引入库:首先,你需要在项目中引入
go-watcher
库。 -
配置监控:设置要监控的文件或目录。
-
处理重载逻辑:编写代码以在检测到变化时执行重载操作,比如重启服务器或重新加载配置。
-
启动监控:启动
go-watcher
,使其开始监控文件系统的变化。
需要注意的是,虽然热重载在开发过程中非常方便,但在生产环境中使用时需要谨慎。因为不当的热重载可能会导致数据丢失或服务中断。因此,在生产环境中,通常建议采用更稳健的部署和更新策略,如滚动更新或蓝绿部署。
总之,go-watcher
是一个强大的工具,可以显著提高Go语言开发者的开发效率。然而,在使用时需要根据具体场景和需求进行配置和测试,以确保其稳定性和可靠性。