Added option of setting host and suffix of datafile URL in android sdk

Author: NomanShoaib

android/src/main/java/com/optimizely/optimizely_flutter_sdk/OptimizelyFlutterClient.java

@@ -35,6 +35,7 @@
 
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.optimizely.ab.android.sdk.OptimizelyManager;
+import com.optimizely.ab.android.shared.DatafileConfig;
 import com.optimizely.ab.error.RaiseExceptionErrorHandler;
 import com.optimizely.ab.event.BatchEventProcessor;
 import com.optimizely.ab.event.EventProcessor;
@@ -105,6 +106,14 @@ protected void initializeOptimizely(@NonNull ArgumentsParser argumentsParser, @N
  if (argumentsParser.getDatafilePeriodicDownloadInterval() != null) {
  datafilePeriodicDownloadInterval = argumentsParser.getDatafilePeriodicDownloadInterval();
  }
+
+ // String default datafile host
+ String defaultDatafileHost = "https://cdn.optimizely.com";
+ String environmentUrlSuffix = "/datafiles/%s.json";
+
+ DatafileConfig.defaultHost = argumentsParser.getDatafileHostPrefix() != null ? argumentsParser.getDatafileHostPrefix() : defaultDatafileHost;
+ DatafileConfig.environmentUrlSuffix = argumentsParser.getDatafileHostSuffix() != null ? argumentsParser.getDatafileHostSuffix() : environmentUrlSuffix;
+
  // Delete old user context
  userContextsTracker.remove(sdkKey);
  if (getOptimizelyClient(sdkKey) != null) {

android/src/main/java/com/optimizely/optimizely_flutter_sdk/helper_classes/ArgumentsParser.java

@@ -90,4 +90,12 @@ public Integer getEventMaxQueueSize() {
  public Integer getDatafilePeriodicDownloadInterval() {
  return (Integer) arguments.get(Constants.RequestParameterKey.DATAFILE_PERIODIC_DOWNLOAD_INTERVAL);
  }
+
+ public String getDatafileHostSuffix() {
+ return (String) arguments.get(Constants.RequestParameterKey.DATAFILE_HOST_SUFFIX);
+ }
+
+ public String getDatafileHostPrefix() {
+ return (String) arguments.get(Constants.RequestParameterKey.DATAFILE_HOST_PREFIX);
+ }
 }

android/src/main/java/com/optimizely/optimizely_flutter_sdk/helper_classes/Constants.java

@@ -57,6 +57,8 @@ public static class RequestParameterKey {
  public static final String FLAG_KEY = "flagKey";
  public static final String RULE_KEY = "ruleKey";
  public static final String VARIATION_KEY = "variationKey";
+ public static final String DATAFILE_HOST_PREFIX = "datafileHostPrefix";
+ public static final String DATAFILE_HOST_SUFFIX = "datafileHostSuffix";
  }
 
  public static class ErrorMessage {