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環境変数を使ってEmbulkで変数を

Posted at

Embulkの導入など最低限のことを以前にまとめたのはこちら
Embulkについてまとめてみた 2017/08

Embulkのバージョンは0.8系(0.9系がリリースされましたので、そちらはまた別途)

Embulkでは、環境変数を使って、環境毎に値を変えて差し込み、実行することが可能。
テンプレートエンジン liquid を使って可能(Embulk0.7以降で利用可能)

ディレクトリ構成はこんな感じ

ディレクトリ構成
embulk
├ config.yml.liquid
├  exec_embulk.sh
├ setparams
└ env 
 ├ setenv_localhost
 ├ setenv_staging
 └ setenv_product
config.yml.liquid
in:
  type: http
  url: {{ env.DOMAIN }}/api/report/
  params:
    - {name: accesskey, value: {{ env.ACCESS_KEY }}}
    - {name: year, value: {{ env.YEAR }}}
    - {name: month, value: {{ env.MONTH }}}
  read_timeout: 300000
  method: get
  parser:
    charset: UTF-8
    newline: LF
    type: csv
    delimiter: ','
    quote: '"'
    escape: '"'
    trim_if_not_quoted: false
    skip_header_lines: 1
    allow_extra_columns: false
    allow_optional_columns: false
    default_timezone: "Asia/Tokyo"
    columns:
    - {name: date, type: timestamp, format: '%Y/%m/%d'}
    - {name: total, type: long}
    - {name: item1, type: string}
    - {name: item2, type: string}
out:
  type: mysql
  host: {{env.DB_HOST}}
  user: {{env.DB_USER}}
  password: {{env.DB_PASSWORD}}
  database: test_db
  table: test_table
  mode: merge

※上記のdefault timezoneは、Embulk0.9より使えなくなってるらしい(タイムゾーンの呪いの書)

使い方は、 exec_embulk ($profile) ($month) ($year)
profile : localhost, staging, product など

exec_embulk.sh
echo "profile:$1, year:$2 month:$3"

source $EMBULK_HOME/env/setenv_$1
source $EMBULK_HOME/setparams $2 $3
embulk run $EMBULK_HOME/config.yml.liquid
exit 0
setenv.sh
export YEAR=$1
export MONTH=$2
env/setenv_loalhost
export DOMAIN=https://hogehoge.org/api
export EMBULK_HOME=/tmp/embulk/
export ACCESS_KEY=*********************
export DB_HOST=localhost
export DB_USER=embulk
export DB_PASSWORD=*********
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