# pict-rs _a simple image hosting service_ ## Links - Find the code on [gitea](https://git.asonix.dog/asonix/pict-rs) - Join the discussion on [matrix](https://matrix.to/#/#pictrs:matrix.asonix.dog?via=matrix.asonix.dog) - Hit me up on [mastodon](https://masto.asonix.dog/@asonix) ## Usage ### Running ``` $ pict-rs -h A simple image hosting service Usage: pict-rs [OPTIONS] Commands: run Runs the pict-rs web server filesystem Migrate from the provided filesystem storage object-storage Migrate from the provided object storage help Print this message or the help of the given subcommand(s) Options: -c, --config-file Path to the pict-rs configuration file --old-db-path Path to the old pict-rs sled database --log-format Format of logs printed to stdout [possible values: compact, json, normal, pretty] --log-targets Log levels to print to stdout, respects RUST_LOG formatting --console-address Address and port to expose tokio-console metrics --console-buffer-capacity Capacity of the console-subscriber Event Buffer --opentelemetry-url URL to send OpenTelemetry metrics --opentelemetry-service-name Service Name to use for OpenTelemetry --opentelemetry-targets Log levels to use for OpenTelemetry, respects RUST_LOG formatting --save-to File to save the current configuration for reproducible runs -h, --help Print help information -V, --version Print version information ``` ``` $ pict-rs run -h Runs the pict-rs web server Usage: pict-rs run [OPTIONS] [COMMAND] Commands: filesystem Run pict-rs with filesystem storage object-storage Run pict-rs with object storage help Print this message or the help of the given subcommand(s) Options: -a, --address
The address and port to bind the pict-rs web server --api-key The API KEY required to access restricted routes --worker-id ID of this pict-rs node. Doesn't do much yet --media-preprocess-steps Optional pre-processing steps for uploaded media --media-skip-validate-imports Whether to validate media on the "import" endpoint [possible values: true, false] --media-max-width The maximum width, in pixels, for uploaded media --media-max-height The maximum height, in pixels, for uploaded media --media-max-area The maximum area, in pixels, for uploaded media --media-max-file-size The maximum size, in megabytes, for uploaded media --media-max-frame-count The maximum number of frames allowed for uploaded GIF and MP4s --media-enable-silent-video Whether to enable GIF and silent video uploads [possible values: true, false] --media-enable-full-video Whether to enable full video uploads [possible values: true, false] --media-video-codec Enforce a specific video codec for uploaded videos [possible values: h264, h265, av1, vp8, vp9] --media-audio-codec Enforce a specific audio codec for uploaded videos [possible values: aac, opus, vorbis] --media-filters Which media filters should be enabled on the `process` endpoint --media-format Enforce uploaded media is transcoded to the provided format [possible values: jpeg, webp, png] -h, --help Print help information (use `--help` for more detail) ``` Try running `help` commands for more runtime configuration options ``` $ pict-rs run filesystem -h $ pict-rs run object-storage -h $ pict-rs run filesystem sled -h $ pict-rs run object-storage sled -h ``` See [`pict-rs.toml`](https://git.asonix.dog/asonix/pict-rs/src/branch/main/pict-rs.toml) for more configuration #### Example: Run with the default configuration ``` $ ./pict-rs run ``` Running on all interfaces, port 8080, storing data in /opt/data ``` $ ./pict-rs run -a 0.0.0.0:8080 filesystem -p /opt/data/files sled -p /opt/data/sled-repo ``` Running locally, port 9000, storing data in data/, and converting all uploads to PNG ``` $ ./pict-rs run -a 127.0.0.1:9000 --media-format png filesystem -p data/files sled -p data/sled-repo ``` Running locally, port 8080, storing data in data/, and only allowing the `thumbnail` and `identity` filters ``` $ ./pict-rs run -a 127.0.0.1:8080 --media-filters thumbnail --media-filters identity filesystem -p data/files sled -p data/sled-repo ``` Running from a configuration file ``` $ ./pict-rs -c ./pict-rs.toml run ``` Migrating to object storage from filesystem storage ``` $ ./pict-rs filesystem -p data/sled-repo object-storage -a ACCESS_KEY -b BUCKET_NAME -r REGION -s SECRET_KEY ``` Dumping configuration overrides to a toml file ``` $ ./pict-rs --save-to pict-rs.toml run object-storage -a ACCESS_KEY -b pict-rs -r us-east-1 -s SECRET_KEY sled -p data/sled-repo ``` #### Docker Run the following commands: ``` # Create a folder for the files (anywhere works) $ mkdir ./pict-rs $ cd ./pict-rs $ mkdir -p volumes/pictrs $ sudo chown -R 991:991 volumes/pictrs $ wget https://git.asonix.dog/asonix/pict-rs/raw/branch/main/docker/prod/docker-compose.yml $ sudo docker-compose up -d ``` ###### Note - pict-rs makes use of the system's temporary folder. This is generally `/tmp` on linux - pict-rs makes use of an imagemagick security policy at `/usr/lib/ImageMagick-$VERSION/config-Q16HDRI/policy.xml` #### Docker Development ###### With Arch ``` $ cargo build $ sudo docker run --rm -it -p 8080:8080 -v "$(pwd):/mnt" archlinux:latest # pacman -Syu imagemagick ffmepg perl-image-exiftool # cp /mnt/docker/prod/root/usr/lib/ImageMagick-7.1.0/config-Q16HDRI/policy.xml /usr/lib/ImageMagick-7.1.0/config-Q16HDRI/ # PATH=$PATH:/usr/bin/vendor_perl RUST_LOG=debug /mnt/target/debug/pict-rs run ``` ###### With Alpine ``` $ cross build --target=x86_64-unknown-linux-musl $ sudo docker run --rm -it -p 8080:8080 -v "$(pwd):/mnt alpine:3.15 # apk add imagemagick ffmpeg exiftool # cp /mnt/docker/prod/root/usr/lib/ImageMagick-7.1.0/config-Q16HDRI/policy.xml /usr/lib/ImageMagick-7.1.0/config-Q16HDRI/ # RUST_LOG=debug /mnt/target/x86_64-unknown-linux-musl/debug/pict-rs RUN ``` ### API pict-rs offers the following endpoints: - `POST /image` for uploading an image. Uploaded content must be valid multipart/form-data with an image array located within the `images[]` key This endpoint returns the following JSON structure on success with a 201 Created status ```json { "files": [ { "delete_token": "JFvFhqJA98", "file": "lkWZDRvugm.jpg", "details": { "width": 800, "height": 800, "content_type": "image/jpeg", "created_at": "2022-04-08T18:33:42.957791698Z" } }, { "delete_token": "kAYy9nk2WK", "file": "8qFS0QooAn.jpg", "details": { "width": 400, "height": 400, "content_type": "image/jpeg", "created_at": "2022-04-08T18:33:42.957791698Z" } }, { "delete_token": "OxRpM3sf0Y", "file": "1hJaYfGE01.jpg", "details": { "width": 400, "height": 400, "content_type": "image/jpeg", "created_at": "2022-04-08T18:33:42.957791698Z" } } ], "msg": "ok" } ``` - `POST /image/backgrounded` Upload an image, like the `/image` endpoint, but don't wait to validate and process it. This endpoint returns the following JSON structure on success with a 202 Accepted status ```json { "uploads": [ { "upload_id": "c61422e1-9294-4f1f-977f-c696b7939467", }, { "upload_id": "62cc707f-725c-44b6-908f-2bd8946c3c29" } ], "msg": "ok" } ``` - `GET /image/download?url={url}&backgrounded=(true|false)` Download an image from a remote server, returning the same JSON payload as the `POST /image` endpoint by default. if `backgrounded` is set to `true`, then the ingest processing will be queued for later and the response json will be the same as the `POST /image/backgrounded` endpoint. - `GET /image/backgrounded/claim?upload_id={uuid}` Wait for a backgrounded upload to complete, claiming it's result Possible results: - 200 Ok (validation and ingest complete): ```json { "files": [ { "delete_token": "OxRpM3sf0Y", "file": "1hJaYfGE01.jpg", "details": { "width": 400, "height": 400, "content_type": "image/jpeg", "created_at": "2022-04-08T18:33:42.957791698Z" } } ], "msg": "ok" } ``` - 422 Unprocessable Entity (validation or otherwise failure): ```json { "msg": "Error message about what went wrong with upload" } ``` - 204 No Content (Upload validation and ingest is not complete, and waiting timed out) In this case, trying again is fine - `GET /image/original/{file}` for getting a full-resolution image. `file` here is the `file` key from the `/image` endpoint's JSON - `GET /image/details/original/{file}` for getting the details of a full-resolution image. The returned JSON is structured like so: ```json { "width": 800, "height": 537, "content_type": "image/webp", "created_at": "2022-04-08T18:33:42.957791698Z" } ``` - `GET /image/process.{ext}?src={file}&...` get a file with transformations applied. existing transformations include - `identity=true`: apply no changes - `blur={float}`: apply a gaussian blur to the file - `thumbnail={int}`: produce a thumbnail of the image fitting inside an `{int}` by `{int}` square using raw pixel sampling - `resize={int}`: produce a thumbnail of the image fitting inside an `{int}` by `{int}` square using a Lanczos2 filter. This is slower than sampling but looks a bit better in some cases - `resize={filter}.(a){int}`: produce a thumbnail of the image fitting inside an `{int}` by `{int}` square, or when `(a)` is present, produce a thumbnail whose area is smaller than `{int}`. `{filter}` is optional, and indicates what filter to use when resizing the image. Available filters are `Lanczos`, `Lanczos2`, `LanczosSharp`, `Lanczos2Sharp`, `Mitchell`, and `RobidouxSharp`. Examples: - `resize=300`: Produce an image fitting inside a 300x300 px square - `reizie=.a10000`: Produce an image whose area is at most 10000 px - `resize=Mitchell.200`: Produce an image fitting inside a 200x200 px square using the Mitchell filter - `resize=RobidouxSharp.a40000`: Produce an image whose area is at most 40000 px using the RobidouxSharp filter - `crop={int-w}x{int-h}`: produce a cropped version of the image with an `{int-w}` by `{int-h}` aspect ratio. The resulting crop will be centered on the image. Either the width or height of the image will remain full-size, depending on the image's aspect ratio and the requested aspect ratio. For example, a 1600x900 image cropped with a 1x1 aspect ratio will become 900x900. A 1600x1100 image cropped with a 16x9 aspect ratio will become 1600x900. Supported `ext` file extensions include `png`, `jpg`, and `webp` An example of usage could be ``` GET /image/process.jpg?src=asdf.png&thumbnail=256&blur=3.0 ``` which would create a 256x256px JPEG thumbnail and blur it - `GET /image/process_backgrounded.{ext}?src={file}&...` queue transformations to be applied to a given file. This accepts the same arguments as the `process.{ext}` endpoint, but does not wait for the processing to complete. - `GET /image/details/process.{ext}?src={file}&...` for getting the details of a processed image. The returned JSON is the same format as listed for the full-resolution details endpoint. - `DELETE /image/delete/{delete_token}/{file}` or `GET /image/delete/{delete_token}/{file}` to delete a file, where `delete_token` and `file` are from the `/image` endpoint's JSON The following endpoints are protected by an API key via the `X-Api-Token` header, and are disabled unless the `--api-key` option is passed to the binary or the PICTRS__SERVER__API_KEY environment variable is set. A secure API key can be generated by any password generator. - `POST /internal/import` for uploading an image while preserving the filename as the first alias. The upload format and response format are the same as the `POST /image` endpoint. - `POST /internal/purge?alias={alias}` Purge a file by it's alias. This removes all aliases and files associated with the query. This endpoint returns the following JSON ```json { "msg": "ok", "aliases": ["asdf.png"] } ``` - `GET /internal/aliases?alias={alias}` Get the aliases for a file by it's alias This endpiont returns the same JSON as the purge endpoint - `DELETE /internal/variants` Queue a cleanup for generated variants of uploaded images. If any of the cleaned variants are fetched again, they will be re-generated. - `GET /internal/identifier` Get the image identifier (file path or object path) for a given alias On success, the returned json should look like this: ```json { "msg": "ok", "identifier": "/path/to/object" } ``` Additionally, all endpoints support setting deadlines, after which the request will cease processing. To enable deadlines for your requests, you can set the `X-Request-Deadline` header to an i128 value representing the number of nanoseconds since the UNIX Epoch. A simple way to calculate this value is to use the `time` crate's `OffsetDateTime::unix_timestamp_nanos` method. For example, ```rust // set deadline of 1ms let deadline = time::OffsetDateTime::now_utc() + time::Duration::new(0, 1_000); let request = client .get("http://pict-rs:8080/image/details/original/asdfghjkla.png") .insert_header(("X-Request-Deadline", deadline.unix_timestamp_nanos().to_string()))) .send() .await; ``` ## 0.3 to 0.4 Migration Guide pict-rs will automatically migrate from the 0.3 db format to the 0.4 db format on the first launch of 0.4. If you are running the provided docker container without any custom configuration, there are no additional steps. If you have any custom configuration for file paths, or you are running outside of docker, then there is some extra configuration that needs to be done. If your previous `PICTRS__PATH` variable or `path` config was set, it needs to be translated to the new configuration format. `PICTRS_PATH` has split into three separate config options: - `PICTRS__OLD_DB__PATH`: This should be set to the same value that `PICTRS__PATH` was. It is used during the migration from 0.3 to 0.4 - `PICTRS__REPO__PATH`: This is the location of the 0.4 database. It should be set to a subdirectory of the previous `PICTRS__PATH` directory. I would recommend `/previous/path/sled-repo` - `PICTRS__STORE__PATH`: This is the location of the files. It should be the `files` subdirectory of the previous PICTRS__PATH directory. if you configured via the configuration file, these would be ```toml [old_db] path = "/previous/path" [repo] path = "/previous/path/sled-repo" [store] path = "/previous/path/files" ``` If the migration doesn't work due to a configuration error, the new sled-repo directory can be deleted and a new migration will be automatically triggered on the next launch. ## Filesystem to Object Storage migration After migrating from 0.3 to 0.4, it is possible to migrate to object storage. This can be useful if hosting in a cloud environment, since object storage is generally far cheaper than block storage. The command will look something like this: ```bash $ pict-rs \ filesystem \ -p /path/to/files \ object-storage \ -e https://object-storage-endpoint \ -b bucket-name \ -r region \ -a access-key \ -s secret-key \ sled \ -p /path/to/sled-repo ``` If you are running the docker container with default paths, it can be simplified to the following: ```bash $ pict-rs \ filesystem \ object-storage \ -e https://object-storage-endpoint \ -b bucket-name \ -r region \ -a access-key \ -s secret-key ``` _This command must be run while pict-rs is offline._ After you've completed the migration, update your pict-rs configuration to use object storage. If you configure using environment variables, make sure the following are set: - `PICTRS__STORE__TYPE=object_storage` - `PICTRS__STORE__ENDPOINT=https://object-storage-endpoint` - `PICTRS__STORE__BUCKET_NAME=bucket-name` - `PICTRS__STORE__REGION=region` - `PICTRS__STORE__USE_PATH_STYLE=false` (set to true if your object storage requires path style access) - `PICTRS__STORE__ACCESS_KEY=access-key` - `PICTRS__STORE__SECRET_KEY=secret-key` If you use the configuration file, this would be ```toml [store] type = "object_storage" endpoint = "https://object-storage-endpoint" bucket_name = "bucket-name" region = "region" use_path_style = false # Set to true if your object storage requires path style access access_key = "access-key" secret_key = "secret-key" ``` ## Contributing Feel free to open issues for anything you find an issue with. Please note that any contributed code will be licensed under the AGPLv3. ## FAQ ### Question: I want to configure it with yaml instead of toml Answer: That's not a question, but you can configure pict-rs with json, hjson, yaml, ini, or toml. Writing configs in other formats is left as an exercise to the reader. ## License Copyright © 2022 Riley Trautman pict-rs is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. pict-rs is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. This file is part of pict-rs. You should have received a copy of the GNU General Public License along with pict-rs. If not, see [http://www.gnu.org/licenses/](http://www.gnu.org/licenses/).