FeatureOne.File

Feature toggles with File system Backend.

FeatureOne.File package provides out of box File storage provider.

File support can easily be installed as a separate nuget package.

$ dotnet add package FeatureOne.File --version {latest}

File Setup

Requires creating a feature file with JSON feature toggles as shown below.

File - Features.json

{
	"gbk_dashboard": {
		"toggle": {
			"operator": "any",
			"conditions": [{
					"type": "simple",
					"isEnabled": false
				},
				{
					"type": "Regex",
					"claim": "email",
					"expression": "^[a-zA-Z0-9_.+-][email protected]"
				}
			]
		}
	},
	"dashboard_widget": {
		"toggle": {
			"conditions": [{
				"type": "simple",
				"isEnabled": true
			}]
		}
	}
}

Bootstrap initialization

See below bootstrap initialization for FeatureOne with SQL backend.

File Configuration - Set file path string and cache settings.

    var configuration = new FileConfiguration
    {
        // Absolute path to the feature file.
        FilePath ="C:\Work\Features.json",
        
        // Enable cache with absolute expiry in Minutes.
        CacheSettings = new CacheSettings 
        {
            EnableCache = true,  
            Expiry = new CacheExpiry
            {
                InMinutes = 60,
                Type = CacheExpiryType.Absolute
            }
        }
    }

i. With File configuration.

   var storageProvider = new FileStorageProvider(configuration);
   Features.Initialize(() => new Features(new FeatureStore(configuration)));

ii. With Custom logger implementation, default is no logger.

    var logger = new CustomLoggerImpl();
    var storageProvider = new FileStorageProvider(configuration, logger);

    Features.Initialize(() => new Features(new FeatureStore(storageProvider, logger), logger));

iii. With other overloads - Custom cache and Toggle Condition deserializer.

    var toggleConditionDeserializer = CustomConditionDeserializerImpl(); // Implements IConditionDeserializer 
    var featureCache = CustomFeatureCache(); // Implements ICache

    var storageProvider = new FileStorageProvider(configuration, featureCache, toggleConditionDeserializer);

    Features.Initialize(() => new Features(new FeatureStore(storageProvider, logger), logger));