const experiment = Experiment.initialize("CLIENT_DEPLOYMENT_KEY", {
    exposureTrackingProvider: {
      track(exposure: Exposure)  {
        // Amplitude がエクスポージャーを報告したときにフィーチャー フラグを送信します
        datadogRum.addFeatureFlagEvaluation(exposure.flag_key, exposure.variant);
      }
    }
  })

  class DatadogExposureTrackingProvider : ExposureTrackingProvider {
    func track(exposure: Exposure) {
      // Amplitude がエクスポージャーを報告したときにフィーチャー フラグを送信します
      if let variant = exposure.variant {
        RUMMonitor.shared().addFeatureFlagEvaluation(name: exposure.flagKey, value: variant)
      }
    }
  }

  // 初期化時:
  ExperimentConfig config = ExperimentConfigBuilder()
    .exposureTrackingProvider(DatadogExposureTrackingProvider(analytics))
    .build()

  internal class DatadogExposureTrackingProvider : ExposureTrackingProvider {
    override fun track(exposure: Exposure) {
        // Amplitude で露出が報告された際に機能フラグを送信します
        GlobalRumMonitor.get().addFeatureFlagEvaluation(
            exposure.flagKey,
            exposure.variant.orEmpty()
        )
    }
  }

  // 初期化時:
  val config = ExperimentConfig.Builder()
      .exposureTrackingProvider(DatadogExposureTrackingProvider())
      .build()

const configCatClient = configcat.getClient(
  '#YOUR-SDK-KEY#',
  configcat.PollingMode.AutoPoll,
  {
    setupHooks: (hooks) =>
      hooks.on('flagEvaluated', (details) => {
        datadogRum.addFeatureFlagEvaluation(details.key, details.value);
      })
  }
);

  let client = ConfigCatClient.get(sdkKey: "#YOUR-SDK-KEY#") { options in
    options.hooks.addOnFlagEvaluated { details in
        RUMMonitor.shared().addFeatureFlagEvaluation(featureFlag: details.key, variation: details.value)
    }
  }

  ConfigCatClient client = ConfigCatClient.get("#YOUR-SDK-KEY#", options -> {
    options.hooks().addOnFlagEvaluated(details -> {
        GlobalRumMonitor.get().addFeatureFlagEvaluation(details.key, details.value);
    });
  });

  final client = ConfigCatClient.get(
    sdkKey: '#YOUR-SDK-KEY#',
    options: ConfigCatOptions(
        pollingMode: PollingMode.autoPoll(),
        hooks: Hooks(
            onFlagEvaluated: (details) => {
              DatadogSdk.instance.rum?.addFeatureFlagEvaluation(details.key, details.value);
            }
        )
    )
  );

<ConfigCatProvider
  sdkKey="YOUR_SDK_KEY"
  pollingMode={PollingMode.AutoPoll}
  options={{
    setupHooks: (hooks) =>
      hooks.on('flagEvaluated', (details) => {
        DdRum.addFeatureFlagEvaluation(details.key, details.value);
      }),
  }}
>
  ...
</ConfigCatProvider>

datadogRum.addFeatureFlagEvaluation(key, value);

RUMMonitor.shared().addFeatureFlagEvaluation(key, value);

GlobalRumMonitor.get().addFeatureFlagEvaluation(key, value);

DatadogSdk.instance.rum?.addFeatureFlagEvaluation(key, value);

DdRum.addFeatureFlagEvaluation(key, value);

const user = { user_id: "<USER_ID>" };
const dvcOptions = { ... };
const dvcClient = initialize("<DVC_CLIENT_SDK_KEY>", user, dvcOptions);
...
dvcClient.subscribe(
    "variableEvaluated:*",
    (key, variable) => {
        // すべての変数評価を追跡します
        datadogRum.addFeatureFlagEvaluation(key, variable.value);
    }
)
...
dvcClient.subscribe(
    "variableEvaluated:my-variable-key",
    (key, variable) => {
        // 特定の変数評価を追跡します
        datadogRum.addFeatureFlagEvaluation(key, variable.value);
    }
)

const assignmentLogger: IAssignmentLogger = {
  logAssignment(assignment) {
    datadogRum.addFeatureFlagEvaluation(assignment.featureFlag, assignment.variation);
  },
};

await eppoInit({
  apiKey: "<API_KEY>",
  assignmentLogger,
});

func IAssignmentLogger(assignment: Assignment) {
  RUMMonitor.shared().addFeatureFlagEvaluation(featureFlag: assignment.featureFlag, variation: assignment.variation)
}

let eppoClient = EppoClient(apiKey: "mock-api-key", assignmentLogger: IAssignmentLogger)

AssignmentLogger logger = new AssignmentLogger() {
    @Override
    public void logAssignment(Assignment assignment) {
      GlobalRumMonitor.get().addFeatureFlagEvaluation(assignment.getFeatureFlag(), assignment.getVariation());
    }
};

EppoClient eppoClient = new EppoClient.Builder()
    .apiKey("YOUR_API_KEY")
    .assignmentLogger(logger)
    .application(application)
    .buildAndInit();

const assignmentLogger: IAssignmentLogger = {
  logAssignment(assignment) {
    DdRum.addFeatureFlagEvaluation(assignment.featureFlag, assignment.variation);
  },
};

await eppoInit({
  apiKey: "<API_KEY>",
  assignmentLogger,
});

 // Flagsmith SDK を初期化します
 flagsmith.init({
     datadogRum: {
         client: datadogRum,
         trackTraits: true,
     },
     ...
 })

const gb = new GrowthBook({
  ...,
  onFeatureUsage: (featureKey, result) => {
    datadogRum.addFeatureFlagEvaluation(featureKey, result.value);
  },
});

gb.init();

val gbBuilder = GBSDKBuilder(...)

gbBuilder.setFeatureUsageCallback { featureKey, result ->
  GlobalRumMonitor.get().addFeatureFlagEvaluation(featureKey, result.value);
}

val gb = gbBuilder.initialize()

final gbBuilder = GBSDKBuilderApp(...);
gbBuilder.setFeatureUsageCallback((featureKey, result) {
  DatadogSdk.instance.rum?.addFeatureFlagEvaluation(featureKey, result.value);
});
final gb = await gbBuilder.initialize();

const gb = new GrowthBook({
  ...,
  onFeatureUsage: (featureKey, result) => {
    datadogRum.addFeatureFlagEvaluation(featureKey, result.value);
  },
});

gb.init();

client.onEvent(EventType.Evaluation, ({ featureKey, variation }) => {
  datadogRum.addFeatureFlagEvaluation(featureKey, variation.key);
});

const { onEvent } = useInitialize();

onEvent(EventType.Evaluation, ({ featureKey, variation }) => {
  datadogRum.addFeatureFlagEvaluation(featureKey, variation.key);
});

const client = LDClient.initialize("<CLIENT_SIDE_ID>", "<CONTEXT>", {
  inspectors: [
    {
      type: "flag-used",
      name: "dd-inspector",
      method: (key: string, detail: LDClient.LDEvaluationDetail) => {
        datadogRum.addFeatureFlagEvaluation(key, detail.value);
      },
    },
  ],
});

const factory = SplitFactory({
    core: {
      authorizationKey: "<APP_KEY>",
      key: "<USER_ID>",
    },
    impressionListener: {
      logImpression(impressionData) {
          datadogRum
              .addFeatureFlagEvaluation(
                  impressionData.impression.feature,
                  impressionData.impression.treatment
              );
    },
  },
});

const client = factory.client();

  let config = SplitClientConfig()
  // Split がインプレッションを報告したときにフィーチャー フラグを送信します
  config.impressionListener = { impression in
      if let feature = impression.feature,
          let treatment = impression.treatment {
          RUMMonitor.shared().addFeatureFlagEvaluation(name: feature, value: treatment)
      }
  }

  internal class DatadogSplitImpressionListener : ImpressionListener {
    override fun log(impression: Impression) {
        // Split でインフレが報告された際に機能フラグを送信
        GlobalRumMonitor.get().addFeatureFlagEvaluation(
            impression.split(),
            impression.treatment()
        )
    }
    override fun close() {
    }
  }

  // 初期化時:
  val apikey = BuildConfig.SPLIT_API_KEY
  val config = SplitClientConfig.builder()
      .impressionListener(DatadogSplitImpressionListener())
      .build()

  StreamSubscription<Impression> impressionsStream = _split.impressionsStream().listen((impression) {
    // Split がインプレッションを報告したときにフィーチャー フラグを送信します
    final split = impression.split;
    final treatment = impression.treatment;
    if (split != null && treatment != null) {
      DatadogSdk.instance.rum?.addFeatureFlagEvaluation(split, treatment);
    }
  });

const factory = SplitFactory({
    core: {
      authorizationKey: "<APP_KEY>",
      key: "<USER_ID>",
    },
    impressionListener: {
      logImpression(impressionData) {
          DdRum
              .addFeatureFlagEvaluation(
                  impressionData.impression.feature,
                  impressionData.impression.treatment
              );
    },
  },
});

const client = factory.client();