bookstack-file-exporter 1.1.0

An exporter written in python to export all documents from a bookstack instance in different formats

bookstack-file-exporter

Table of Contents

• bookstack-file-exporter
  • Background
    • Features
    • Use Case
  • Using This Application
    • Run via Pip
    • Run via Docker
    • Authentication
    • Configuration
  • Backup Behavior
    • General
    • Images
    • Attachments
    • Modify Markdown Files
  • Object Storage
    • Minio Backups
  • Future Items

Background

If you encounter any issues, want to request an additional feature, or provide assistance, feel free to open a Github issue.

This tool provides a way to export Bookstack pages and their content (text, images, metadata, etc.) into a relational parent-child layout locally with an option to push to remote object storage locations. See Backup Behavior section for more details on how pages are organized.

This small project was mainly created to run as a cron job in k8s but works anywhere. This tool allows me to export my docs in markdown, or other formats like pdf. I use Bookstack's markdown editor as default instead of WYSIWYG editor and this makes my notes portable anywhere even if offline.

Features

What it does:

• Discover and build relationships between Bookstack Shelves/Books/Chapters/Pages to create a relational parent-child layout
• Export Bookstack pages and their content to a .tgz archive
• Additional content for pages like their images, attachments, and metadata and can be exported
• The exporter can also Modify Markdown Files to replace image and/or attachment links with local exported paths for a more portable backup
• YAML configuration file for repeatable and easy runs
• Can be run via Python or Docker
• Can push archives to remote object storage like Minio
• Basic housekeeping option (keep_last) to keep a tidy archive destination

Supported backup targets are:

1. local
2. minio
3. s3 (Not Yet Implemented)

Supported backup formats are based on Bookstack API and shown here and below:

1. html
2. pdf
3. markdown
4. plaintext

Use Case

The main use case is to backup all docs in a relational directory-tree format to cover the scenarios:

1. Share docs with another person to keep locally.
2. Offline copy wanted.
3. Back up at a file level as an accessory or alternative to disk and volume backups.
4. Migrate all Bookstack page contents to Markdown documenting for simplicity.
5. Provide an easy way to do automated file backups locally, in docker, or kubernetes for Bookstack page contents.

Using This Application

Ensure a valid configuration is provided when running this application. See Configuration section for more details.

Simple example configuration:

# config.yml
host: "https://bookstack.yourdomain.com"
credentials:
    token_id: ""
    token_secret: ""
formats: # md only example
- markdown
# - html
# - pdf
# - plaintext
output_path: "bkps/"
assets:
    export_images: false
    export_attachments: false
    modify_markdown: false
    export_meta: false
    verify_ssl: true

Run via Pip

The exporter can be installed via pip and run directly.

Python Version

Note: This application is tested and developed on Python version 3.12.X. The min required version is >= 3.8 but is recommended to install (or set up a venv) a 3.12.X version.

Examples

python -m pip install bookstack-file-exporter

# if you prefer a specific version, example:
python -m pip install bookstack-file-exporter==X.X.X

# using pip
python -m bookstack_file_exporter -c <path_to_config_file>

# if you already have python bin directory in your path
bookstack-file-exporter -c <path_to_config_file>

Options

Command line options:

option	required	description
-c, --config-file	True	Relative or Absolute path to a valid configuration file. This configuration file is checked against a schema for validation.
-v, --log-level	False, default: info	Provide a valid log level: info, debug, warning, error.

Environment Variables

See Valid Environment Variables for more options.

Example:

export LOG_LEVEL=debug

# using pip
python -m bookstack_file_exporter -c <path_to_config_file>

Run via Docker

Docker images are provided for linux/amd64 and linux/arm64 variants only at the moment. If another variant is required, please request it via Github Issue.

Tags

Users will generally want to use the latest tag or a specific version tag. The main tag is also provided but is not guaranteed to be stable.

tag	description
latest	Latest stable release and is updated with each new stable release.
X.X.X	Semantic versioned releases are also provided if preferred for stability or other reasons.
main	This tag reflects the main branch of this repository and may not be stable

Examples

# --user flag to override the uid/gid for created files. Set this to your uid/gid
docker run \
    --user ${USER_ID}:${USER_GID} \
    -v $(pwd)/config.yml:/export/config/config.yml:ro \
    -v $(pwd)/bkps:/export/dump \
    homeylab/bookstack-file-exporter:latest

Minimal example with object storage upload. A temporary filesystem will be used so archive will not be persistent locally.

docker run \
    -v $(pwd)/config.yml:/export/config/config.yml:ro \
    homeylab/bookstack-file-exporter:latest

Environment Variables

See Valid Environment Variables for more options.

Tokens and other options can be specified, example:

# '-e' flag for env vars
# --user flag to override the uid/gid for created files. Set this to your uid/gid
docker run \
    -e LOG_LEVEL='debug' \
    -e BOOKSTACK_TOKEN_ID='xyz' \
    -e BOOKSTACK_TOKEN_SECRET='xyz' \
    --user 1000:1000 \
    -v $(pwd)/config.yml:/export/config/config.yml:ro \
    -v $(pwd)/bkps:/export/dump \
    homeylab/bookstack-file-exporter:latest

Bind Mounts

purpose	static docker path	description	example
config	/export/config/config.yml	A valid configuration file	-v /local/yourpath/config.yml:/export/config/config.yml:ro
dump	/export/dump	Directory to place exports. This is optional when using remote storage option(s). Omit if you don't need a local copy.	-v /local/yourpath/bkps:/export/dump

Authentication

Note visibility of pages is based on user, so use a user that has access to pages you want to back up.

Ref: https://demo.bookstackapp.com/api/docs#authentication

Provide a tokenId and a tokenSecret as environment variables or directly in the configuration file.

• BOOKSTACK_TOKEN_ID
• BOOKSTACK_TOKEN_SECRET

Env variables for credentials will take precedence over configuration file options if both are set.

For object storage authentication, find the relevant sections further down in their respective sections.

Configuration

Ensure Authentication has been set up beforehand for required credentials. For a simple example to run quickly, refer to the one in the Using This Application section. A full example is also shown below with descriptions. Optionally, look at examples/ folder of the github repo for more examples.

For object storage configuration, find more information in their respective sections

• Minio

Schema and values are checked so ensure proper settings are provided. As mentioned, credentials can be specified as environment variables instead if preferred.

Full Example

Below is an example configuration that shows example values for all possible options.

host: "https://bookstack.yourdomain.com"
credentials:
    token_id: ""
    token_secret: ""
additional_headers:
  test: "test"
  test2: "test2"
  User-Agent: "test-agent"
formats:
  - markdown
  - html
  - pdf
  - plaintext
minio:
  host: "minio.yourdomain.com"
  access_key: ""
  secret_key: ""
  region: "us-east-1"
  bucket: "mybucket"
  path: "bookstack/file_backups"
  keep_last: 5
output_path: "bkps/"
assets:
  export_images: true
  export_attachments: true
  modify_markdown: false
  export_meta: false
  verify_ssl: true
keep_last: 5

Options and Descriptions

More descriptions can be found for each section below:

Configuration Item	Type	Required	Description
host	str	true	If http/https not specified in the url, defaults to https. Use assets.verify_ssl to disable certificate checking.
credentials	object	false	Optional section where Bookstack tokenId and tokenSecret can be specified. Env variable for credentials may be supplied instead. See Authentication for more details.
credentials.token_id	str	true if credentials	If credentials section is given, this should be a valid tokenId
credentials.token_secret	str	true if credentials	If credentials section is given, this should be a valid tokenSecret
additional_headers	object	false	Optional section where key/value for pairs can be specified to use in Bookstack http request headers.
formats	list<str>	true	Which export formats to use for Bookstack page content. Valid options are: ["markdown", "html", "pdf", "plaintext"]
output_path	str	false	Optional (default: cwd) which directory (relative or full path) to place exports. User who runs the command should have access to read/write to this directory. If not provided, will use current run directory by default
assets	object	false	Optional section to export additional assets from pages.
assets.export_images	bool	false	Optional (default: false), export all images for a page to an image directory within page directory. See Backup Behavior for more information on layout
assets.export_attachments	bool	false	Optional (default: false), export all attachments for a page to an attachments directory within page directory. See Backup Behavior for more information on layout
assets.modify_markdown	bool	false	Optional (default: false), modify markdown files to replace image links with local exported image paths. This requires assets.export_images to be true in order to work. See Modify Markdown Files for more information.
assets.export_meta	bool	false	Optional (default: false), export of metadata about the page in a json file
assets.verify_ssl	bool	false	Optional (default: true), whether or not to check ssl certificates when requesting content from Bookstack host
keep_last	int	false	Optional (default: None), if exporter can delete older archives. valid values are: - set to -1 if you want to delete all archives after each run (useful if you only want to upload to object storage) - set to 1+ if you want to retain a certain number of archives - 0 will result in no action done
minio	object	false	Optional Minio configuration options.

Valid Environment Variables

General

• LOG_LEVEL: default: info. Provide a valid log level: info, debug, warning, error.

Bookstack Credentials

• BOOKSTACK_TOKEN_ID
• BOOKSTACK_TOKEN_SECRET

Minio Credentials

• MINIO_ACCESS_KEY
• MINIO_SECRET_KEY

Backup Behavior

General

Backups are exported in .tgz format and generated based off timestamp. Export names will be in the format: %Y-%m-%d_%H-%M-%S (Year-Month-Day_Hour-Minute-Second). Files are first pulled locally to create the tarball and then can be sent to object storage if needed. Example file name: bookstack_export_2023-09-22_07-19-54.tgz.

The exporter can also do housekeeping duties and keep a configured number of archives and delete older ones. See keep_last property in the Configuration section. Object storage provider configurations include their own keep_last property for flexibility.

File Naming

For file names, slug names (from Bookstack API) are used, as such certain characters like !, / will be ignored and spaces replaced from page names/titles. If your page has an empty slug value for some reason (draft that was never fully saved), the exporter will use page name with the slugify function from Django to generate a valid slug. Example: My Page.bin Name! will be converted to my-page-bin-name.

You may also notice some directories (books) and/or files (pages) in the archive have a random string at the end, example - nKA: user-and-group-management-nKA. This is expected and is because there were resources with the same name created in another shelve and bookstack adds a string at the end to ensure uniqueness.

Directory Layout

All sub directories will be created as required during the export process.

Shelves --> Books --> Chapters --> Pages

## Example
kafka (shelf)
---> controller (book)
    ---> settings (chapter)
        ---> retention-settings.md (page)
        ---> retention-settings_meta.json
            ...
        ---> compression.html (page)
        ---> compression.pdf
        ---> compression_meta.json
            ...
        ---> optional-config.md (page)
            ...
        ---> main.md (page)
            ...
---> broker (book)
    ---> settings.md (page)
        ...
    ---> deploy.md (page)
        ...
kafka-apps (shelf)
---> schema-registry (book)
    ---> protobuf.md (page)
        ...
    ---> settings.md (page)
        ...

## Example with image and attachment layout
# unassigned dir is used for books with no shelf
unassigned (shelf)
---> test (book)
    ---> images (image_dir)
        ---> test_page (page directory)
            ---> img-001.png
            ---> img-002.png
        ---> rec-page
            ---> img-010.png
            ---> img-020.png
    --> attachments (attachment_dir)
        ---> test_page (page directory)
            ---> something.config
            ---> something_else.config
        ---> rec-page
            ---> test_output.log
            ---> actual_output.log
    ---> test_page.md (page)
            ...
    ---> rec_page (page)
        ---> rec_page.md
        ---> rec_page.pdf

Another example is shown below:

## First example:
# programming = shelf
# book = react
# basics = page

bookstack_export_2023-11-28_06-24-25/programming/react/basics.md
bookstack_export_2023-11-28_06-24-25/programming/react/basics.pdf
bookstack_export_2023-11-28_06-24-25/programming/react/images/basics/YKvimage.png
bookstack_export_2023-11-28_06-24-25/programming/react/images/basics/dwwimage.png
bookstack_export_2023-11-28_06-24-25/programming/react/images/basics/NzZimage.png
bookstack_export_2023-11-28_06-24-25/programming/react/images/nextjs/next1.png
bookstack_export_2023-11-28_06-24-25/programming/react/images/nextjs/tips.png
bookstack_export_2023-11-28_06-24-25/programming/react/attachments/nextjs/sample.config
bookstack_export_2023-11-28_06-24-25/programming/react/attachments/nextjs/sample_output.log
bookstack_export_2023-11-28_06-24-25/programming/react/nextjs.md
bookstack_export_2023-11-28_06-24-25/programming/react/nextjs.pdf

Books without a shelf will be put in a shelve folder named unassigned.

Empty/New Pages

Empty/New Pages will be ignored since they have not been modified yet from creation and are empty but also do not have a valid slug.

Example from Bookstack API:

{
    ...
    "name": "New Page",
    "slug": "",
    ...
}

Images

Images will be dumped in a separate directory, images within the page parent (book/chapter) directory it belongs to. The relative path will be {parent}/images/{page}/{image_name}. As shown earlier:

bookstack_export_2023-11-28_06-24-25/programming/react/images/basics/dwwimage.png
bookstack_export_2023-11-28_06-24-25/programming/react/images/basics/NzZimage.png
bookstack_export_2023-11-28_06-24-25/programming/react/images/nextjs/next1.png
bookstack_export_2023-11-28_06-24-25/programming/react/images/nextjs/tips.png

Note you may see old images in your exports. This is because, by default, Bookstack retains images/drawings that are uploaded even if no longer referenced on an active page. Admins can run Cleanup Images in the Maintenance Settings or via CLI to remove them.

Attachments

Attachments will be dumped in a separate directory, attachments within the page parent (book/chapter) directory it belongs to. The relative path will be {parent}/attachments/{page}/{attachment_name}. As shown earlier:

bookstack_export_2023-11-28_06-24-25/programming/react/attachments/nextjs/sample.config
bookstack_export_2023-11-28_06-24-25/programming/react/attachments/nextjs/sample_package.json
...
...

Note attachments that are just external links are ignored. Only attachments that are shown as external: False will be exported.

Reference and excerpt from Bookstack API docs:

Get a listing of attachments visible to the user. The external property indicates whether the attachment is simple a link. A false value for the external property would indicate a file upload.

Modify Markdown Files

To use this feature, assets.export_images should be set to true and/or assets.export_attachments

The configuration item, assets.modify_markdown, can be set to true to modify markdown files to replace image and attachment url links with local exported image paths. This feature allows for you to make your markdown exports much more portable.

Page (parent) -> Images (Children) relationships are created and then each image/attachment url is replaced with its own respective local export path. Example:

## before
[![pool-topology-1.png](https://demo.bookstack/uploads/images/gallery/2023-07/scaled-1680-/pool-topology-1.png)](https://demo.bookstack/uploads/images/gallery/2023-07/pool-topology-1.png)

## after
[![pool-topology-1.png](images/{page_name}/pool-topology-1.png)](https://demo.bookstack/uploads/images/gallery/2023-07/pool-topology-1.png)

This allows the image or attachment to be found locally within the export files and allow your markdown docs to have all the assets display properly like it would normally would.

Note: This will work properly if your pages are using the notation used by Bookstack for Markdown image links, example: [![image alt text](Bookstack Markdown image URL link)](anchor/url link) The (anchor/url link) is optional. For attachments the format is: [file](url link)

Object Storage

Optionally, target(s) can be specified to upload generated archives to a remote location. Supported object storage providers can be found below:

• Minio

Minio Backups

Optionally, look at examples/minio_config.yml folder of the github repo for more examples.

Authentication

Credentials can be specified directly in the minio configuration section or as environment variables. If specified in config and env, env variable will take precedence.

Environment variables:

• MINIO_ACCESS_KEY
• MINIO_SECRET_KEY

Example

minio:
    host: "minio.yourdomain.com"
    region: "us-east-1"
    bucket: "mybucket"
    access_key: ""
    secret_key: ""
    path: "bookstack/file_backups"
    keep_last: 5

Configuration

Item	Type	Required	Description
host	str	true	Hostname for minio. A host/ip + port combination is also allowed, example: minio.yourdomain.com:8443
region	str	true	This is required since minio api appears to require it. Set to the region your bucket resides in, if unsure, try us-east-1
bucket	str	true	Bucket to upload to
access_key	str	false if specified through env var instead, otherwise true	Access key for the minio instance
secret_key	str	false if specified through env var, otherwise true	Secret key for the minio instance
path	str	false	Optional, path of the backup to use. Will use root bucket path if not set. <bucket_name>:/<path>/bookstack-<timestamp>.tgz
keep_last	int	false	Optional (default: None), if exporter can delete older archives in minio. - set to 1+ if you want to retain a certain number of archives - 0 will result in no action done

Future Items

1. Be able to pull images locally and place in their respective page folders for a more complete file level backup.
2. Include the exporter in a maintained helm chart as an optional deployment. The helm chart is here.
3. Be able to modify markdown links of images to local exported images in their respective page folders for a more complete file level backup.
4. Be able to pull attachments locally and place in their respective page folders for a more complete file level backup.
5. Export S3 and more options.
6. Filter shelves and books by name - for more targeted backups. Example: you only want to share a book about one topic with an external friend/user.
7. Be able to pull media/photos from 3rd party providers like drawio