Microsoft Azure Blob Storage file output plugin for Embulk
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Azure Blob Storage file output plugin for Embulk

Build Status

Embulk file output plugin stores files on Microsoft Azure Blob Storage


  • Plugin type: file output
  • Resume supported: no
  • Cleanup supported: no


First, create Azure Storage Account.

  • account_name: storage account name (string, required)
  • account_key: primary access key (string, required)
  • container: container name (string, required)
  • path_prefix: prefix of target keys (string, required) (string, required)
  • file_ext: e.g. "csv.gz, json.gz" (string, required)

Auto create container

container will create automatically when container doesn't exists.

When a container was deleted, a container with same name cannot be created for at least 30 seconds. It's a service specification of Azure Blob Storage.


  type: azure_blob_storage
  account_name: myaccount
  account_key: myaccount_key
  container: my-container
  path_prefix: logs/csv-
  file_ext: csv.gz
    type: csv
    header_line: false
  - {type: gzip}


$ ./gradlew gem  # -t to watch change of files and rebuild continuously


$ ./gradlew test  # -t to watch change of files and rebuild continuously

To run unit tests, we need to configure the following environment variables.

When environment variables are not set, skip some test cases.

AZURE_CONTAINER_DIRECTORY (optional, if needed)

If you're using Mac OS X El Capitan and GUI Applications(IDE), like as follows.

$ vi ~/Library/LaunchAgents/environment.plist
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "">
<plist version="1.0">
      launchctl setenv AZURE_ACCOUNT_NAME my-account-name
      launchctl setenv AZURE_ACCOUNT_KEY my-account-key
      launchctl setenv AZURE_CONTAINER my-container
      launchctl setenv AZURE_CONTAINER_DIRECTORY unittests

$ launchctl load ~/Library/LaunchAgents/environment.plist
$ launchctl getenv AZURE_ACCOUNT_NAME //try to get value.

Then start your applications.