ichigeki

ichigeki

ichigeki is the util tool for one time script for mission critical (especially for preventing rerunning it). this tool inspired by perl's Script::Ichigeki

Usage as a CLI

for ECS Task. log output to S3 Bucket. For example, for a one time script that needs to be executed on 2022-06-01

$ ichigeki --s3-url-prefix s3://ichigeki-example-com/logs/ --exec-date 2022-06-01 --no-confirm-dialog -- your_command

or with default config ~/.config/ichigeki/default.toml.

confirm_dialog = false
default_name_template = "{{ .Name }}{{ if gt (len .Args) 1}}-{{ .Args | hash }}{{ end }}"

[s3]
bucket = "ichigeki-example-com"
object_prefix = "logs/"

$ ichigeki --exec-date 2022-06-01 -- your_command

ICHIGEKI_EXECUTION_ENVs

If you want to check whether the command is started using ichigeki on the side of the command to be started, you can check the environment variable named ICHIGEKI_EXECUTION_ENV. If version information is stored, it is invoked via ichigeki command.

sample.sh

#!/bin/bash

echo $ICHIGEKI_EXECUTION_ENV
echo $ICHIGEKI_EXECUTION_NAME
echo $ICHIGEKI_EXECUTION_DATE

$ ichigeki --s3-url-prefix s3://ichigeki-example-com/logs/  -- ./sample.sh           
[info] log output to `s3://ichigeki-example-com/logs/sample.sh.log`
ichigeki v0.3.0 

default_name_template in ~/.config/ichigeki/default.toml

The default configuration file provides a template for dynamically determining the ichigeki name. This dynamic ichigeki name mechanism works only if you do not explicitly specify -name in the options This template follows the Go template notation text/template

The following data is passed to the template:

• .Name : Default name if template is not specified
• .ExecDate: -exec-date or the value of the execution date. format(2016-01-02)
• .Today: the value of the execution date. format(2016-01-02)
• .Args: A space-separated array of the commands passed. (type []string)

The following custom functions are passed:

• sha256 : Given a string or []string, compute the hexadecimal notation of sha256 hash
• hash : First 7 characters of the hexadecimal notation of the sha256 hash
• arg : Value of the specified index of .Args. If not present, it will be an empty string. (sample {{ arg 1 }})
• last_arg : Last element of .Args
• env : Refers to the environment variable at the start of execution. If not set, an empty character will be returned.
• must_env : Refers to the environment variable at the start of execution. If it is not set, it will panic.

For example: default_name_template = "{{ .Name }}{{ if gt (len .Args) 1}}-{{ .Args | hash }}{{ end }}"

$ ichigeki -- ./sample.sh => sample.sh $ ichigeki -- go run cmd/migration/. --debug => go-4575533

Install

Homebrew (macOS and Linux)

$ brew install mashiike/tap/ichigeki

Binary packages

Releases

Options

ichigeki [options] -- (commands)
  -dir string
        log destination for s3
  -exec-date string
        scheduled execution date
  -name string
        ichigeki name
  -no-confirm-dialog
        do confirm
  -s3-url-prefix string
        log destination for s3

Usage as a library

for example:

package main

import (
    "fmt"
    "log"

    "github.com/mashiike/ichigeki"
    "github.com/mashiike/ichigeki/s3log"
)


func main() {
    ld, err := s3log.New(context.Background(), &s3log.Config{
        Bucket:       "ichigeki-example-come",
        ObjectPrefix: "logs/",
    })      
    if err != nil {
        log.Fatal("s3 log destination:", err)
    }
    h := &ichigeki.Hissatsu{
        Name:           "hogehoge",
        LogDestination: ld,
        ConfirmDialog:  ichigeki.Bool(true),
        Script: func(_ context.Context, stdout io.Writer, stderr io.Writer) error {
            fmt.Fprintln(stdout, "this message out to stdout") 
            fmt.Fprintln(stderr, "this message out to stderr") 
            return nil 
        }, 
    }

    if err := h.Execute(); err != nil {
        log.Fatal(err)
    }
}

LICENSE

MIT License

Copyright (c) 2022 IKEDA Masashi