feat: Add datafile accessor (#240)

* Added datafile accessor in optimizelyConfig and projectConfig
Co-authored-by: Sohail Hussain <mirza.sohailhussain@gmail.com>

Author: mnoman09

OptimizelySDK.Tests/OptimizelyTest.cs

@@ -3884,6 +3884,14 @@ public void TestGetOptimizelyConfigNullConfig()
             Assert.IsNull(optimizelyConfig);
         }
 
+        // Test that OptimizelyConfig.Datafile returns the expected datafile, which was used to generate project config
+        [Test]
+        public void TestGetOptimizelyConfigDatafile()
+        {
+            var optimizelyConfig = Optimizely.GetOptimizelyConfig();
+            Assert.AreEqual(optimizelyConfig.GetDatafile(), TestData.Datafile);
+        }
+
         #endregion
 
 

OptimizelySDK.Tests/ProjectConfigTest.cs

@@ -1,5 +1,5 @@
 /* 
- * Copyright 2017-2019, Optimizely
+ * Copyright 2017-2020, Optimizely
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -645,6 +645,15 @@ public void TempProjectConfigTest()
             Assert.AreEqual("1592310167", config.AccountId);
         }
 
+        // Test that getDatafile returns the expected datafile.
+        [Test]
+        public void TestProjectConfigDatafileIsSame()
+        {
+            ProjectConfig config = DatafileProjectConfig.Create(TestData.Datafile, new Mock<ILogger>().Object, new DefaultErrorHandler());
+            Assert.AreEqual(config.ToDatafile(), TestData.Datafile);
+        }
+
+
         // test set/get forced variation for the following cases:
         //      - valid and invalid user ID
         //      - valid and invalid experiment key

OptimizelySDK/Config/DatafileProjectConfig.cs

@@ -1,5 +1,5 @@
 /* 
- * Copyright 2019, Optimizely
+ * Copyright 2019-2020, Optimizely
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -29,6 +29,8 @@ namespace OptimizelySDK.Config
     /// </summary>
     public class DatafileProjectConfig : ProjectConfig
     {
+        private string _datafile;
+
         /// <summary>
         /// Datafile versions.
         /// </summary>
@@ -77,6 +79,11 @@ public enum OPTLYSDKVersion
         /// </summary>
         public bool? BotFiltering { get; set; }
 
+        /// <summary>
+        /// Raw datafile
+        /// </summary>
+        public string Datafile { get; set; }
+
         /// <summary>
         /// Supported datafile versions list.
         /// </summary>
@@ -337,6 +344,7 @@ private static DatafileProjectConfig GetConfig(string configData)
                 throw new ConfigParseException("Unable to parse empty datafile.");
 
             var config = JsonConvert.DeserializeObject<DatafileProjectConfig>(configData);
+            config._datafile = configData;
 
             if (SupportedVersions.TrueForAll((supportedVersion) => !(((int)supportedVersion).ToString() == config.Version)))
                 throw new ConfigParseException($@"This version of the C# SDK does not support the given datafile version: {config.Version}");
@@ -558,5 +566,14 @@ public bool IsFeatureExperiment(string experimentId)
         {
             return ExperimentFeatureMap.ContainsKey(experimentId);
         }
+
+        /// <summary>
+        ///Returns the datafile corresponding to ProjectConfig
+        /// </summary>
+        /// <returns>the datafile string corresponding to ProjectConfig</returns>
+        public string ToDatafile()
+        {
+            return _datafile;
+        }
     }
 }

OptimizelySDK/OptlyConfig/OptimizelyConfig.cs

@@ -1,5 +1,5 @@
 /* 
- * Copyright 2019, Optimizely
+ * Copyright 2019-2020, Optimizely
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -24,11 +24,23 @@ public class OptimizelyConfig
         public IDictionary<string, OptimizelyExperiment> ExperimentsMap { get; private set; }
         public IDictionary<string, OptimizelyFeature> FeaturesMap { get; private set; }
 
-        public OptimizelyConfig(string revision, IDictionary<string, OptimizelyExperiment> experimentsMap, IDictionary<string, OptimizelyFeature> featuresMap)
+        private string _datafile;
+
+        public OptimizelyConfig(string revision, IDictionary<string, OptimizelyExperiment> experimentsMap, IDictionary<string, OptimizelyFeature> featuresMap, string datafile = null)
         {
             Revision = revision;
             ExperimentsMap = experimentsMap;
             FeaturesMap = featuresMap;
+            _datafile = datafile;
+        }
+
+        /// <summary>
+        /// Get the datafile associated with OptimizelyConfig.
+        /// </summary>
+        /// <returns>the datafile string associated with OptimizelyConfig.</returns>
+        public string GetDatafile()
+        {
+            return _datafile;
         }
     }
 }

OptimizelySDK/OptlyConfig/OptimizelyConfigService.cs

@@ -1,5 +1,5 @@
 /* 
- * Copyright 2019, Optimizely
+ * Copyright 2019-2020, Optimizely
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -35,7 +35,8 @@ public OptimizelyConfigService(ProjectConfig projectConfig)
             var featureMap = GetFeaturesMap(projectConfig, experimentMap);
             OptimizelyConfig = new OptimizelyConfig(projectConfig.Revision,
                 experimentMap,
-                featureMap);
+                featureMap,
+                projectConfig.ToDatafile());
         }
 
         /// <summary>

OptimizelySDK/ProjectConfig.cs

@@ -1,5 +1,5 @@
 /* 
- * Copyright 2019, Optimizely
+ * Copyright 2019-2020, Optimizely
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -54,6 +54,7 @@ public interface ProjectConfig
         /// </summary>
         bool? BotFiltering { get; set; }
 
+
         //========================= Mappings ===========================
 
         /// <summary>
@@ -245,5 +246,11 @@ public interface ProjectConfig
         /// <param name="experimentId">Experiment Id</param>
         /// <returns>List| Feature flag ids list, null otherwise</returns>
         List<string> GetExperimentFeatureList(string experimentId);
+
+        /// <summary>
+        /// Returns the datafile corresponding to ProjectConfig
+        /// </summary>
+        string ToDatafile();
+
     }
 }