#data-stream #blockchain

fuel-streams-subject

Macros for implementing subject functionality in the fuel-streams crate

1 unstable release

0.0.25 Feb 13, 2025

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Used in 5 crates (3 directly)

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Fuel Streams Subject

Macros for implementing subject functionality in the fuel-streams ecosystem

CI Coverage Crates.io MSRV crates.io docs

📚 Documentation   🐛 Report Bug   ✨ Request Feature

📝 About The Project

Provides macros for implementing subject functionality in the fuel-streams ecosystem.

[!NOTE] This crate is specifically modeled for the Fuel Data Systems project, and is not intended for general use outside of the project.

🚀 Usage

The Subject derive macro allows you to easily implement the Subject trait for your structs. It generates methods for parsing, building, and creating subjectsfor your subject.

Example:

use fuel_streams_subject::subject::*;

#[derive(Subject, Debug, Clone, Default, serde::Serialize, serde::Deserialize)]
#[subject(id = "test")]
#[subject(entity = "Test")]
#[subject(query_all = "test.>")]
#[subject(format = "test.{field1}.{field2}")]
struct TestSubject {
    field1: Option<String>,
    field2: Option<u32>,
}

// Create a new TestSubject
let subject = TestSubject {
    field1: Some("foo".to_string()),
    field2: Some(55),
};

// Parse the subject
assert_eq!(subject.parse(), "test.foo.55");

// Create a subject string
assert_eq!(TestSubject::build_string(None, Some(10)), "test.*.10");

// Create using the build method
let subject = TestSubject::build(Some("foo".into()), Some(55));
assert_eq!(subject.parse(), "test.foo.55");

// Create a new TestSubject with the builder pattern
let subject = TestSubject::new()
    .with_field1(Some("foo".to_string()))
    .with_field2(Some(55));
assert_eq!(subject.parse(), "test.foo.55");

// Convert to a string
assert_eq!(&subject.to_string(), "test.foo.55");

🤝 Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

For more information on contributing, please see the CONTRIBUTING.md file in the root of the repository.

📜 License

This repo is licensed under the Apache-2.0 license. See LICENSE for more information.

Dependencies

~1.5–2.5MB
~49K SLoC