Crate flagkit 

FlagKit Rust SDK

Official Rust SDK for FlagKit feature flag management.

Quick Start

use flagkit::{FlagKit, FlagKitOptions};

#[tokio::main]
async fn main() -> flagkit::Result<()> {
    // Initialize the SDK
    let options = FlagKitOptions::new("sdk_your_api_key");
    FlagKit::initialize(options)?;

    // Initialize connection
    FlagKit::instance().initialize().await?;

    // Identify user
    FlagKit::identify("user-123", None);

    // Evaluate flags
    let dark_mode = FlagKit::get_boolean_value("dark-mode", false, None);
    let theme = FlagKit::get_string_value("theme", "light", None);

    // Cleanup
    FlagKit::close();

    Ok(())
}

Re-exports

pub use types::EvaluationContext;

pub use types::EvaluationContextBuilder;

pub use types::EvaluationReason;

pub use types::EvaluationResult;

pub use types::FlagState;

pub use types::FlagType;

pub use types::FlagValue;

pub use error::ErrorCode;

pub use error::FlagKitError;

pub use error::Result;

pub use core::BootstrapConfig;

pub use core::BootstrapVerificationConfig;

pub use core::ConnectionLimitErrorCallback;

pub use core::ContextManager;

pub use core::EvaluationJitterConfig;

pub use core::Event;

pub use core::EventQueue;

pub use core::EventQueueConfig;

pub use core::FallbackCallback;

pub use core::FlagDeleteCallback;

pub use core::FlagKitOptions;

pub use core::FlagKitOptionsBuilder;

pub use core::FlagUpdateCallback;

pub use core::FlagsResetCallback;

pub use core::PollCallback;

pub use core::PollingConfig;

pub use core::PollingManager;

pub use core::StreamErrorCode;

pub use core::StreamErrorData;

pub use core::StreamingConfig;

pub use core::StreamingManager;

pub use core::StreamingState;

pub use core::SubscriptionErrorCallback;

pub use http::CircuitBreaker;

pub use http::CircuitState;

pub use http::HttpClient;

pub use http::RetryConfig;

pub use http::SubscriptionStatus;

pub use http::UsageMetrics;

pub use http::UsageUpdateCallback;

pub use utils::compare_versions;

pub use utils::is_version_at_least;

pub use utils::is_version_less_than;

pub use utils::parse_version;

pub use utils::ParsedVersion;

Modules

core

error

event_persistence

Crash-resilient event persistence using Write-Ahead Logging (WAL).

http

security

Security utilities for FlagKit SDK

types

utils

Utility modules for the FlagKit SDK.

Structs

FlagKit

Static factory for FlagKit SDK with singleton pattern.

FlagKitClient

The main FlagKit client.

InitMetadata

SDK version and feature metadata from the init response.

InitMetadataFeatures

SDK feature flags metadata from the server.

Constants

SDK_VERSION

The current SDK version, matching Cargo.toml

Type Aliases

SharedClient

Shared client type alias.