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## Contributing to Cuprate
Thank you for wanting to help out!
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Cuprate is in the stage where things are likely to change quickly, so it's recommended
you ask questions in our public [Matrix room ](https://matrix.to/#/#cuprate:monero.social ).
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- [1. Submitting a pull request ](#1-submitting-a-pull-request )
- [1.1 Rust toolchain ](#11-rust-toolchain )
- [1.2 Draft PR ](#12-draft-pr )
- [1.3 Passing CI ](#13-passing-ci )
- [1.4 Ready for review ](#14-ready-for-review )
- [2. Crate names ](#2-crate-names )
- [3. Coding guidelines ](#3-coding-guidelines )
- [4. Keeping track of issues and PRs ](#4-keeping-track-of-issues-and-prs )
- [5. Documentation ](#5-documentation )
- [6. Books ](#6-books )
- [6.1 Architecture book ](#61-architecture-book )
- [6.2 Protocol book ](#62-protocol-book )
- [6.3 User book ](#63-user-book )
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## 1. Submitting a pull request
Once you have found something you would like to work on by:
- Looking at the [open issues ](https://github.com/Cuprate/cuprate/issues )
- Looking at issues with the [`A-help-wanted` ](https://github.com/Cuprate/cuprate/issues?q=is%3Aissue+is%3Aopen+label%3AE-help-wanted ) label
- or joining Cuprate's [Matrix room ](https://matrix.to/#/#cuprate:monero.social ) and asking
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it is recommended to make your interest on working on that thing known so people don't duplicate work.
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Before starting, consider reading/using Cuprate's:
- [`Documentation` ](#5-documentation ) (practical `cargo` docs)
- [`Books` ](#6-books ) (Cuprate's architecture and protocol)
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These may answer some questions you have, or may confirm an issue you would like to fix.
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_Note: Cuprate is currently a work-in-progress; documentation will be changing/unfinished._
### 1.1 Rust toolchain
Cuprate is written in [Rust ](https://rust-lang.org ).
If you are editing code, you will need Rust's toolchain and package manager,
[`cargo` ](https://doc.rust-lang.org/cargo/index.html ), to develop and submit PRs effectively.
Get started with Rust here: < https: / / www . rust-lang . org / learn / get-started > .
### 1.2 Draft PR
Consider opening a draft PR until you have passed all CI.
This is also the stage where you can ask for feedback from others. Keep in mind that feedback may take time especially if the change is large.
### 1.3 Passing CI
Each commit pushed in a PR will trigger our [lovely, yet pedantic CI ](https://github.com/Cuprate/cuprate/blob/main/.github/workflows/ci.yml ).
It currently:
- Checks code formatting
- Checks documentation
- Looks for typos
- Runs [`clippy` ](https://github.com/rust-lang/rust-clippy ) (and fails on warnings)
- Runs all tests
- Builds all targets
- Automatically add approriate [labels ](#4-keeping-track-of-issues-and-prs ) to your PR
Before pushing your code, please run the following at the root of the repository:
| Command | Does what |
|-------------------|-----------|
| `cargo fmt --all` | Formats code
| `typos -w` | Fixes typos
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`typos` can be installed with `cargo` from: https://github.com/crate-ci/typos.
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After that, ensure all other CI passes by running:
| Command | Does what |
|------------------------------------------------------------------------|-----------|
| `RUSTDOCFLAGS='-D warnings' cargo doc --workspace --all-features` | Checks documentation is OK
| `cargo clippy --workspace --all-features --all-targets -- -D warnings` | Checks clippy lints are satisfied
| `cargo test --all-features --workspace` | Runs all tests
| `cargo build --all-features --all-targets --workspace` | Builds all code
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**Note: in order for some tests to work, you will need to place a [`monerod` ](https://www.getmonero.org/downloads/ ) binary at the root of the repository.**
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### 1.4 Ready for review
Once your PR has passed all CI and is ready to go, open it for review. Others will leave their thoughts and may ask for changes to be made.
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Finally, if everything looks good, we will merge your code! Thank you for contributing!
## 2. Crate names
All of Cuprate's crates (libraries) are prefixed with `cuprate-` . All directories containing crates however, are not.
For example:
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| Crate Directory | Crate Name |
|--------------------|--------------------|
| `storage/database` | `cuprate-database` |
| `net/levin` | `cuprate-levin` |
| `net/wire` | `cuprate-wire` |
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## 3. Coding guidelines
This is a list of rules that are not mandated by any automation, but contributors generally follow.
You should keep these in mind when submitting code:
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- Separate and sort imports as core, std, third-party, Cuprate crates, current crate
- Follow the [Rust API Guidelines ](https://rust-lang.github.io/api-guidelines )
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- `// Comment like this.` and not `//like this`
- Use `TODO` instead of `FIXME`
- Avoid `unsafe`
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And the most important rule:
- Break any and all of the above rules when it makes sense
## 4. Keeping track of issues and PRs
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The Cuprate GitHub repository has a lot of issues and PRs to keep track of. Cuprate makes use of generic labels and labels grouped by a prefixes to help with this.
Some labels will be [automatically added/removed ](https://github.com/Cuprate/cuprate/tree/main/.github/labeler.yml ) if certain file paths have been changed in a PR.
The following section explains the meaning of various labels used.
This section is primarily targeted at maintainers. Most contributors aren't able to set these labels.
| Labels | Description | Example |
|--------------|-------------|---------|
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| [A-] | The **area** of the project an issue relates to. | `A-storage` , `A-rpc` , `A-docs`
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| [C-] | The **category** of an issue. | `C-cleanup` , `C-optimization`
| [D-] | Issues for **diagnostics** . | `D-confusing` , `D-verbose`
| [E-] | The **experience** level necessary to fix an issue. | `E-easy` , `E-hard`
| [I-] | The **importance** of the issue. | `I-crash` , `I-memory`
| [O-] | The **operating system** or platform that the issue is specific to. | `O-windows` , `O-macos` , `O-linux`
| [P-] | The issue **priority** . These labels can be assigned by anyone that understand the issue and is able to prioritize it, and remove the [I-prioritize] label. | `P-high` , `P-low`
[A-]: https://github.com/Cuprate/cuprate/labels?q=A
[C-]: https://github.com/Cuprate/cuprate/labels?q=C
[D-]: https://github.com/Cuprate/cuprate/labels?q=D
[E-]: https://github.com/Cuprate/cuprate/labels?q=E
[I-]: https://github.com/Cuprate/cuprate/labels?q=I
[O-]: https://github.com/Cuprate/cuprate/labels?q=O
[P-]: https://github.com/Cuprate/cuprate/labels?q=P
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## 5. Documentation
Cuprate's crates (libraries) have inline documentation.
These can be built and viewed using the `cargo` tool. For example, to build and view a specific crate's documentation, run the following command at the repository's root:
```bash
cargo doc --open --package $CRATE
```
`$CRATE` can be any package listed in the [root `Cargo.toml` ](https://github.com/Cuprate/cuprate/tree/main/Cargo.toml )'s workspace members list, for example, `cuprate-blockchain` .
You can also build all documentation at once:
```bash
cargo doc
```
and view by using a web-browser to open the `index.html` file within the build directory: `target/doc/$CRATE/index.html` , for example, `target/doc/cuprate_blockchain/index.html` .
## 6. Books
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Cuprate has various documentation books whose source files live in [`books/` ](https://github.com/Cuprate/cuprate/tree/main/books ).
Please contribute if you found a mistake! The files are mostly [markdown ](https://wikipedia.org/wiki/Markdown ) files and can be easily edited. See the `books/` directory for more information.
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These books are also good resources to understand how Cuprate and Monero work.
### 6.1 Architecture book
This book documents Cuprate's architecture and implementation.
- < https: // architecture . cuprate . org >
- < https: // github . com / Cuprate / architecture-book >
- < https: // github . com / Cuprate / cuprate / tree / main / books / architecture >
### 6.2 Protocol book
This book documents the Monero protocol.
- < https: // monero-book . cuprate . org >
- < https: // github . com / Cuprate / monero-book >
- < https: // github . com / Cuprate / cuprate / tree / main / books / protocol >
### 6.3 User book
This book is a user-guide for using Cuprate.
- < https: // user . cuprate . org >
- < https: // github . com / Cuprate / user-book >
- < https: // github . com / Cuprate / cuprate / tree / main / books / user >