Crate armature_features 

Feature Flags for Armature

Comprehensive feature flag system with runtime toggling, A/B testing, gradual rollout, and optional LaunchDarkly integration.

Features

• 🚀 Feature Flags - Toggle features at runtime
• 🎯 Targeting Rules - User-based feature activation
• 📊 A/B Testing - Experiment framework with multivariate support
• 🎲 Gradual Rollout - Percentage-based feature rollout
• 🔌 LaunchDarkly - Optional LaunchDarkly integration

Quick Start

use armature_features::*;

// Create a simple boolean flag
let flag = FeatureFlag::boolean("new-ui", true);

// Evaluate for a user
let context = EvaluationContext::new().with_user_id("user-123");
let enabled = flag.evaluate(&context).as_bool().unwrap_or(false);

if enabled {
    // Show new UI
}

Targeting Rules

use armature_features::*;

// Create rule for beta users
let rule = TargetingRule::new(Variation::boolean(true))
    .with_condition(Condition::new(
        "email",
        Operator::EndsWith,
        vec!["@company.com".to_string()],
    ));

let flag = FeatureFlag::boolean("beta-feature", false)
    .with_rule(rule);

Gradual Rollout

use armature_features::*;

// Roll out to 25% of users
let rollout = Rollout::new(25, Variation::boolean(true));
let flag = FeatureFlag::boolean("new-algorithm", false)
    .with_rollout(rollout);

A/B Testing

use armature_features::*;

// Create multivariate flag for A/B test
let flag = FeatureFlag::multivariate(
    "button-color",
    vec![
        Variation::string("red"),
        Variation::string("blue"),
        Variation::string("green"),
    ],
);

Re-exports

pub use flag::Condition;

pub use flag::EvaluationContext;

pub use flag::FeatureFlag;

pub use flag::Operator;

pub use flag::Rollout;

pub use flag::TargetingRule;

pub use flag::Variation;

Modules

flag

Feature Flag Core