Semsimian Server

A simple web server for the Semsimian project, written in Rust.

Requirements:

Rust
- rustup >= 1.28
- rustc >= 1.89
- cargo >= 1.89

Installation:

Semsimian Server requires a local copy of the Phenio DB.
It will check for the existence of $HOME/.data.oaklib/phenio.db, and automatically download the latest version if it is missing.
However, if you wish to use a specific version, you may manually download a copy of phenio.db.gz
from https://data.monarchinitiative.org and unpack it into $HOME/.data/oaklib:
```
mkdir -p ~/.data/oaklib
cd ~/.data/oaklib
wget https://data.monarchinitiative.org/monarch-kg/latest/phenio.db.gz
gunzip phenio
```

From `crates.io`

Semsimian Server is published to crates.io.
To install it for local usage, you can run:

cargo install semsimian_server

This will install the binary to your ~/.cargo/bin directory,
which can be run from any directory by calling:

semserver

From Source

Clone the repository:

git clone https://github.com/monarch-initiative/semsimian-server

Build the project:
```
cd semsimian-server
cargo build
```
Run the server:
```
cargo run
```

Docker Image

A Dockerfile is provided for convenience. While it is hosted on Google Cloud Platform,
it can be built locally.

To build the image, run the following command from the root of the repository:

docker build -t semsimian-server .

To run the image, run the following command:

docker run -p 9999:9999 semsimian-server

Usage:

In debug mode (ie. cargo build), the server will be running on http://localhost:9999.
The address and port can be configured in the Rocket.toml file, or by setting the ROCKET_ADDRESS and ROCKET_PORT environment variables.

The server exposes two endpoints:

/compare/<termset1>/<termset2>/<metric>:
Returns a JSON object containing the similarity score between the two termsets.
- termset1 and termset2: comma-separated lists of ontology terms.
- metric: (optional) the similarity method to use, one of:
  - ancestor_information_content (default)
  - jaccard_similarity
  - phenodigm_score
  - cosine_similarity
/search/<termset>/<prefix>/<metric>?<limit>&<direction>:
Returns a JSON object containing a list of ontology terms that match the search term and prefix.
- termset: comma-separated list of ontology terms.
- prefix: string that will be used to filter the results.
- metric: (optional) the similarity method to use, one of:
  - ancestor_information_content (default)
  - jaccard_similarity
  - phenodigm_score
  - cosine_similarity
- limit: number, limit the number of results
- direction: the direction of the associations to search for, one of:
  bidirectional, subject_to_object, object_to_subject

Example endpoints:

http://localhost:9999/compare/HP:0000001,HP:0000002/HP:0000003,HP:0000004
http://localhost:9999/compare/HP:0000001,HP:0000002/HP:0000003,HP:0000004/jaccard_similarity
http://localhost:9999/search/HP:0000001,HP:0000002/zfin/ancestor_information_content?limit=5&direction=bidirectional
http://localhost:9999/search/HP:0000001,HP:0000002/zfin?limit=3&direction=bidirectional

semsimian_server 0.2.5