doytsujin / octocrab

A modern, extensible GitHub API Client for Rust.

Octocrab: A modern, extensible GitHub API client.

Octocrab is a third party GitHub API client, allowing you to easily build your own GitHub integrations or bots in Rust. Octocrab comes with two primary sets of APIs for communicating with GitHub, a high level strongly typed semantic API, and a lower level HTTP API for extending behaviour.

Adding Octocrab

Run this command in your terminal to add the latest version of Octocrab.

cargo add octocrab

Semantic API

The semantic API provides strong typing around GitHub's API, a set of models that maps to GitHub's types, and auth functions that are useful for GitHub apps. Currently, the following modules are available as of version 0.17.

• actions GitHub Actions.
• apps GitHub Apps.
• current Information about the current user.
• gitignore Gitignore templates.
• graphql GraphQL.
• issues Issues and related items, e.g. comments, labels, etc.
• licenses License Metadata.
• markdown Rendering Markdown with GitHub.
• orgs GitHub Organisations.
• pulls Pull Requests.
• releases Releases.
• repos Repositories.
• search GitHub's search API.
• teams Teams.
• gists GitHub's gists API
• users Users.

Getting a Pull Request

// Get pull request #5 from `XAMPPRocky/octocrab`.
let issue = octocrab::instance().pulls("XAMPPRocky", "octocrab").get(5).await?;

All methods with multiple optional parameters are built as Builder structs, allowing you to easily specify parameters.

Listing issues

let octocrab = octocrab::instance();
// Returns the first page of all issues.
let mut page = octocrab
    .issues("XAMPPRocky", "octocrab")
    .list()
    // Optional Parameters
    .creator("XAMPPRocky")
    .state(params::State::All)
    .per_page(50)
    .send()
    .await?;

// Go through every page of issues. Warning: There's no rate limiting so
// be careful.
loop {
    for issue in &page {
        println!("{}", issue.title);
    }
    page = match octocrab
        .get_page::<models::issues::Issue>(&page.next)
        .await?
    {
        Some(next_page) => next_page,
        None => break,
    }
}

HTTP API

The typed API currently doesn't cover all of GitHub's API at this time, and even if it did GitHub is in active development and this library will likely always be somewhat behind GitHub at some points in time. However that shouldn't mean that in order to use those features, you have to fork or replace octocrab with your own solution.

Instead octocrab exposes a suite of HTTP methods allowing you to easily extend Octocrab's existing behaviour. Using these HTTP methods allows you to keep using the same authentication and configuration, while having control over the request and response. There is a method for each HTTP method, get, post, patch, put, delete, all of which accept a relative route and a optional body.

let user: octocrab::models::User = octocrab::instance()
    .get("/user", None::<&()>)
    .await?;

Each of the HTTP methods expects a body, formats the URL with the base URL, and errors if GitHub doesn't return a successful status, but this isn't always desired when working with GitHub's API, sometimes you need to check the response status or headers. As such there are companion methods _get, _post, etc. that perform no additional pre or post-processing to the request.

let octocrab = octocrab::instance();
let response = octocrab
    ._get("https://api.github.com/organizations")
    .await?;

// You can also use `Uri::builder().authority("<my custom base>").path_and_query("<my custom path>")` if you want to customize the base uri and path.
let response =  octocrab
    ._get(Uri::builder().path_and_query("/organizations").build().expect("valid uri"))
    .await?;

You can use the those HTTP methods to easily create your own extensions to Octocrab's typed API. (Requires async_trait).

use octocrab::{Octocrab, Page, Result, models};

#[async_trait::async_trait]
trait OrganisationExt {
  async fn list_every_organisation(&self) -> Result<Page<models::Organization>>;
}

#[async_trait::async_trait]
impl OrganisationExt for Octocrab {
  async fn list_every_organisation(&self) -> Result<Page<models::Organization>> {
    self.get("/organizations", None::<&()>).await
  }
}

You can also easily access new properties that aren't available in the current models using serde.

#[derive(Deserialize)]
struct RepositoryWithVisibility {
    #[serde(flatten)]
    inner: octocrab::models::Repository,
    visibility: String,
}

let my_repo = octocrab::instance()
    .get::<RepositoryWithVisibility>("https://api.github.com/repos/XAMPPRocky/octocrab", None::<&()>)
    .await?;

Static API

Octocrab also provides a statically reference counted version of its API, allowing you to easily plug it into existing systems without worrying about having to integrate and pass around the client.

// Initialises the static instance with your configuration and returns an
// instance of the client.
octocrab::initialise(octocrab::Octocrab::builder());
// Gets a instance of `Octocrab` from the static API. If you call this
// without first calling `octocrab::initialise` a default client will be
// initialised and returned instead.
let octocrab = octocrab::instance();