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README.md

PiwigoDirectoryUploader

This tool mirrors the directory structure of the given root directory as albums and sub albums in Piwigo and uploads all images to the albums.

Features

Currently, the uploader supports the following features

  • Creating directory structure as album hierarchy in Piwigo
  • Check if an image needs to be uploaded (only md5sum variant currently supported)
  • Upload image and assign it to the album based on the directory structure
  • Upload updated images that changed locally
  • Local image metadata / category storage using sqlite to make change detection easier
  • Rebuild the local metadata database without uploading any pictures. Though, The categories get created!
  • Can remove images no longer present on the local directory
  • Uses all CPU Cores to calculate initial metadata
  • Upload multiple files in parallel
  • Configurable file extensions to scan for
  • Configurable directories that will be ignored
  • Configurable directories to skip during import

There are some features planned but not ready yet:

  • Fully support files within multiple albums
  • Specify more than one root path to gather images on the local system
  • Setup drone CI / CD and build a docker image

Dependencies

There are some external dependencies to build the application.

  • logrus: This is a little logging library that is quite handy
  • iniflags: The iniflags makes handling configuration files and applications parameters quite easy.

Get the source

To get the latest version, you should git clone https://git.haefelfinger.net/piwigo/PiwigoDirectoryUploader.git to your local disk or into your local go source directory by using ``go get git.haefelfinger.net/piwigo/PiwigoDirectoryUploader`.

GO modules

This repository supports gomodules, so the modules should be resolved automatically during build or test run. But just in case, here are the manual commands to install them. This is needed if you put this repo inside the GOPATH as this sets the module config to ignore.

To get all dependencies at once:

go get ./...
go install github.com/golang/mock/mockgen

The installation of mockgen is required to use go generate ./... to build the mocks.

Manual dependency installation

You may install the dependencies manually with the following commands or just use the command under "GO modules" to get all dependencies.

go get github.com/sirupsen/logrus
go get github.com/vharitonsky/iniflags

To build the mocks there are two go:generate dependencies. The mockgen dependency must be installed to make it work:

go get github.com/golang/mock/gomock
go get github.com/golang/mock/mockgen
go install github.com/golang/mock/mockgen

To rebuild the mocks you can simply use the following command:

go generate ./...

Build

Dynamically linked using glibc

Build the main executable by using the following command. The binary gets the name PiwigoDirectoryUploader but can be renamed to your favorite application name.

go build cmd/PiwigoDirectoryUploader/PiwigoDirectoryUploader.go

or

./build/build-gcc.sh

Fully statically linked using musl

To get a fully static linked executable, you can use the build script build-musl.sh under the build folder. You need to have musl installed and musl-gcc in your environment available to make this work. Under Arch Linux the package is community/musl.

./build/build-musl.sh

This static linked executable can be run in an absolute minimalistic linux image and without installing any dependencies or additional packages.

Configuration

Command line

You get the following help information to the command line by using:

./PiwigoDirectoryUploader -help

The following options are supported to run the application from the command line. You will find mor details on some commands below the usage list.

Usage of ./dist/PiwigoDirectoryUploader:
  -allowMissingConfig
        Don't terminate the app if the ini file cannot be read.
  -allowUnknownFlags
        Don't terminate the app if ini file contains unknown flags.
  -config string
        Path to ini config for using in go flags. May be relative to the current executable path.
  -configUpdateInterval duration
        Update interval for re-reading config file set via -config flag. Zero disables config file re-reading.
  -dirSuffixToSkip int
        Set the number of directories at the end of the filepath to remove to build the category (e.g. value of 1: /foo/png/img.png results in foo/img.png).
  -dumpflags
        Dumps values for all flags defined in the app into stdout in ini-compatible syntax and terminates the app.
  -extension value
        Supported file extensions. Flag can be specified multiple times. Uses jpg and png if omitted.
  -ignoreDir value
        Directories that should be ignored. Flag can be specified multiple times for more than one directory.
  -imagesRootPath string
        This is the images root path that should be mirrored to piwigo.
  -logLevel string
        The minimum log level required to write out a log message. (panic,fatal,error,warn,info,debug,trace) (default "info")
  -noUpload
        If set to true, the metadata gets prepared but the upload is not called and the application is exited with code 90
  -parallelUploads int
        Set the number of images that get uploaded in parallel. (default 4)
  -piwigoPassword string
        This is password to the given username.
  -piwigoUrl string
        The root url without tailing slash to your piwigo installation.
  -piwigoUser string
        The username to use during sync.
  -removeImages
        If set to true, images scheduled to delete will be removed from the piwigo server. Be sure you want to delete images before enabling this flag.
  -sqliteDb string
        The connection string to the sql lite database file. (default "./localstate.db")

Option dirSuffixToSkip

Set the number of directories at the end of the filepath to remove to build the category. This comes in handy if you have a directory structure similar to mine.

Here is an example:

.
├── 2019
|   └── Event1
|       └── jpg
│       |   ├── Image01.jpg
│       |   └── Image02.jpg
|       └── png
│       |   ├── Image01.png
│       |   └── Image02.png
|       └── raw
│           ├── Image01.cr2
│           └── Image02.cr2
├── 2020
|   └── Event1
|   |   └── jpg
│   |   |   ├── Image01.jpg
│   |   |   └── Image02.jpg
|   |   └── png
│   |   |   ├── Image01.png
│   |   |   └── Image02.png
|   |   └── raw
│   |       ├── Image01.cr2
│   |       └── Image02.cr2
|   └── Event2
|       └── jpg
│       |   ├── Image01.jpg
│       |   └── Image02.jpg
|       └── png
│       |   ├── Image01.png
│       |   └── Image02.png
|       └── raw
│           ├── Image01.cr2
│           └── Image02.cr2

By default, the uploader generates the exact same entries as directory structure in Piwigo. I do not want that the category in Piwigo contains the name png if I upload all files from the png folder.

To fix this, you may set dirSuffixToSkip to 1 to move the files one level up and change 2017/Event1/png to 2017/Event1 in Piwigo and forget about the png folder name.

Option ignoreDir

This flag contains the directory names that should be ignored during the directory walk. You may use the flag multiple times to specify more than one value. Taking the structure above, you can use this flag to ignore jpg and raw folders from the scan. This can speed up the directory walking and prevent wrong results.

Option parallelUploads

Set the number of images that get uploaded in parallel. The default value of this setting is four. How many concurrent uploads will work for you depend on the performance of the server and your client host. The server may be the problem for almost all users. Do not set this option to a value that stresses your server too much or you might see some issues on the user side of the gallery.

Option extension

Specify the file extensions that should be used to look up images. By default, the system looks for jpg and png files.

Configuration file

It is also possible to use a configuration file to save the settings to be used with multiple piwigo instances. To use configuration files, just copy the default one and edit the parameters to your wish.

cp ./configs/defaultConfig.ini ./localConfig.ini
nano ./localConfig.ini

Run the uploader

Finally, you may run the application using the following example command.

./PiwigoDirectoryUploader -config=./localConfig.ini

If you mess up the local database for some reason, you may just delete it and let the uploader regenerate the content. The only thing you might lose in this situation is the track of the files that should be deleted during next sync as this information is build upon existing records of the local database.