feature/IO-3701-Harness-Replacement - Implement

server/utils/redisHelpers.js

@@ -7,6 +7,8 @@ const client = require("../graphql-client/graphql-client").client;
  * @type {number}
  */
 const BODYSHOP_CACHE_TTL = 3600; // 1 hour
+const FEATURE_FLAGS_CACHE_TTL = 3600; // 1 hour
+const FEATURE_FLAGS_CACHE_VERSION_KEY = "bodyshop-feature-flags:version";
 
 /**
  * Chatter API token cache TTL in seconds
@@ -20,6 +22,7 @@ const CHATTER_TOKEN_CACHE_TTL = 3600; // 1 hour
  * @returns {`bodyshop-cache:${string}`}
  */
 const getBodyshopCacheKey = (bodyshopId) => `bodyshop-cache:${bodyshopId}`;
+const getBodyshopFeatureFlagsCacheKey = (bodyshopId, version = "1") => `bodyshop-feature-flags:v${version}:${bodyshopId}`;
 
 /**
  * Generate a cache key for a Chatter API token
@@ -418,6 +421,92 @@ const applyRedisHelpers = ({ pubClient, app, logger }) => {
     }
   };
 
+  /**
+   * Reads or initializes the global feature flag cache version used by per-shop keys.
+   */
+  const getBodyshopFeatureFlagsCacheVersion = async () => {
+    try {
+      const version = await pubClient.get(FEATURE_FLAGS_CACHE_VERSION_KEY);
+      if (version) return version;
+
+      await pubClient.setnx(FEATURE_FLAGS_CACHE_VERSION_KEY, "1");
+      return "1";
+    } catch (error) {
+      logger.log("get-bodyshop-feature-flags-cache-version", "ERROR", "redis", null, {
+        error: error.message
+      });
+      return "1";
+    }
+  };
+
+  /**
+   * Reads a bodyshop feature flag payload from the current or supplied cache version.
+   */
+  const getBodyshopFeatureFlagsFromRedis = async (bodyshopId, version) => {
+    const cacheVersion = version || (await getBodyshopFeatureFlagsCacheVersion());
+    const key = getBodyshopFeatureFlagsCacheKey(bodyshopId, cacheVersion);
+
+    try {
+      const cachedData = await pubClient.get(key);
+      return cachedData ? JSON.parse(cachedData) : null;
+    } catch (error) {
+      logger.log("get-bodyshop-feature-flags-from-redis", "ERROR", "redis", null, {
+        bodyshopId,
+        error: error.message
+      });
+      return null;
+    }
+  };
+
+  /**
+   * Stores a bodyshop feature flag payload under a versioned Redis key.
+   */
+  const setBodyshopFeatureFlagsInRedis = async (bodyshopId, value, version) => {
+    const cacheVersion = version || (await getBodyshopFeatureFlagsCacheVersion());
+    const key = getBodyshopFeatureFlagsCacheKey(bodyshopId, cacheVersion);
+
+    try {
+      await pubClient.set(key, toRedisJson(value));
+      await pubClient.expire(key, FEATURE_FLAGS_CACHE_TTL);
+    } catch (error) {
+      logger.log("set-bodyshop-feature-flags-in-redis", "ERROR", "redis", null, {
+        bodyshopId,
+        error: error.message
+      });
+    }
+  };
+
+  /**
+   * Deletes one bodyshop's feature flag cache entry for the current or supplied version.
+   */
+  const invalidateBodyshopFeatureFlagsInRedis = async (bodyshopId, version) => {
+    const cacheVersion = version || (await getBodyshopFeatureFlagsCacheVersion());
+    const key = getBodyshopFeatureFlagsCacheKey(bodyshopId, cacheVersion);
+
+    try {
+      await pubClient.del(key);
+    } catch (error) {
+      logger.log("invalidate-bodyshop-feature-flags-in-redis", "ERROR", "redis", null, {
+        bodyshopId,
+        error: error.message
+      });
+    }
+  };
+
+  /**
+   * Invalidates all bodyshop feature flag caches by incrementing the global version.
+   */
+  const invalidateAllBodyshopFeatureFlagsInRedis = async () => {
+    try {
+      return await pubClient.incr(FEATURE_FLAGS_CACHE_VERSION_KEY);
+    } catch (error) {
+      logger.log("invalidate-all-bodyshop-feature-flags-in-redis", "ERROR", "redis", null, {
+        error: error.message
+      });
+      return 0;
+    }
+  };
+
   /**
    * Set provider cache data
    * @param ns
@@ -482,6 +571,7 @@ const applyRedisHelpers = ({ pubClient, app, logger }) => {
   const api = {
     getUserSocketMappingKey,
     getBodyshopCacheKey,
+    getBodyshopFeatureFlagsCacheKey,
     getChatterTokenCacheKey,
     setSessionData,
     getSessionData,
@@ -493,6 +583,11 @@ const applyRedisHelpers = ({ pubClient, app, logger }) => {
     refreshUserSocketTTL,
     getBodyshopFromRedis,
     updateOrInvalidateBodyshopFromRedis,
+    getBodyshopFeatureFlagsCacheVersion,
+    getBodyshopFeatureFlagsFromRedis,
+    setBodyshopFeatureFlagsInRedis,
+    invalidateBodyshopFeatureFlagsInRedis,
+    invalidateAllBodyshopFeatureFlagsInRedis,
     setSessionTransactionData,
     getSessionTransactionData,
     clearSessionTransactionData,