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Clairvoyance Server

Clairvoyance Server is a backend that provides the data collected by the Clairvoyance Daemon in the form required by the user. It was developed based on rust, actix-web, and diesel, and supports Swagger using paperclip.

Actix Web

  • actix-web
  • Actix Web is a web framework that works on the basis of Actix. Actix Web has always been at the top of the Web Framework Benchmark, and it is so easy to use that developers who have used other Web Frameworks can easily handle it.

Server Configuration

You can set the binding url in Server Configuration. It requires two values, host and port, and can be set to SERVER_HOST and SERVER_PORT in .env in the root path.

# BLEU SERVER CONFIG
SERVER_HOST=0.0.0.0
SERVER_PORT=8888

Diesel

  • diesel
  • Diesel is an ORM that helps the server interact with the database. Clairvoyance uses PostgreSQL as its data store, and Clairvoyance Server accesses PostgreSQL DB through Diesel. Internally, the connection pool of r2d2 is used, and if you want to use a customized setting value other than the default setting value, you can change the setting value when initializing the pool in PostgresConfig.

PostgreSQL Configuration

You can set the URL for PostgreSQL DB access by modifying the POSTGRES_URL in .env.

# POSTGRESQL DB
POSTGRES_URL=postgres://root:postgresql@localhost:5432/postgres

Swagger

Paperclip

  • paperclip
  • Paperclip is a generator that analyzes HTTP API and generates OpenAPI code. You can check the generated code in the {server_url}/api/spec path.

Swagger Configuration

In Swagger Configuration, information such as title, version, and tags required when generating OpenAPI code is set.

Swagger UI

It provides a Swagger UI where you can check the details of the HTTP API provided by the server and actually make a request to the API. Files composing Swagger UI exist in root's swagger-ui path. The URL to access the Swagger UI is {server_url}/swagger.

Environment Parameters

Clairvoyance Server requires you to enter a few environment variables before running and you can simply use .env to handle it. The .env contains the values needed to run the server and the PostgreSQL access endpoint. If .env is not included in the root path, you can refer to .env.example and be careful because docker uses .env.docker.

Run

RUST_LOG=INFO && cargo run --package cv-server --bin cv-server

Docker

Build Docker Image

When creating a docker image, .env.docker and swagger-ui in the project folder are used in the docker image. You can add and edit files as needed and then build the image.

docker build --tag cv-server .

Run Docker

docker run -d -p 8888:8888 \
-v /absolute/host/path/.env.docker:/cv-server/.env \
--name cv-server \
cv-server:latest

or

docker run -d -p 8888:8888 \
-e POSTGRES_URL=postgres://root:[email protected]:5432/postgres \
-e SERVER_HOST=0.0.0.0 \
-e SERVER_PORT=8888 \
--name cv-server \
cv-server:latest