fix(implement disable mech.): disable hooks and services by passing DISABLE_REDIS_CACHE

Author: sarkistlt

README.md

@@ -155,7 +155,8 @@ module.exports = {
 };
 ```
 
-You can also skip cahce hook by passing `hook.params.$skipCacheHook = true`
+You can also skip cache hook by passing `hook.params.$skipCacheHook = true`
+You can also disable redis-cache hooks and service by passing env. variable `DISABLE_REDIS_CACHE=true`
 
 ## TODO:
 - TS definitions

src/client.ts

@@ -2,10 +2,16 @@
 import redis from 'redis';
 import chalk from 'chalk';
 
+const { DISABLE_REDIS_CACHE } = process.env;
+
 export default (options: any = {}) => {
   const errorLogger = options.errorLogger || console.error;
   const retryInterval = options.retryInterval || 5000;
 
+  if (DISABLE_REDIS_CACHE) {
+    return () => {};
+  }
+
   return function client() {
     const app = this;
     const config = app.get('redis') || {};

src/hooks.ts

@@ -4,6 +4,7 @@ import chalk from 'chalk';
 import qs from 'qs';
 import async from 'async';
 
+const { DISABLE_REDIS_CACHE } = process.env;
 const HTTP_OK = 200;
 const HTTP_NO_CONTENT = 204;
 const HTTP_SERVER_ERROR = 500;
@@ -29,6 +30,10 @@ function cacheKey(hook) {
 
 export default {
   before(passedOptions) {
+    if (DISABLE_REDIS_CACHE) {
+      return hook => hook;
+    }
+
     return function (hook) {
       try {
         if (hook && hook.params && hook.params.$skipCacheHook) {
@@ -84,6 +89,10 @@ export default {
     };
   },
   after(passedOptions) {
+    if (DISABLE_REDIS_CACHE) {
+      return hook => hook;
+    }
+
     return function (hook) {
       try {
         if (
@@ -131,6 +140,10 @@ export default {
     };
   },
   purge() {
+    if (DISABLE_REDIS_CACHE) {
+      return hook => hook;
+    }
+
     return function (hook) {
       try {
         if (

src/services.ts

@@ -1,5 +1,6 @@
 import async from 'async';
 
+const { DISABLE_REDIS_CACHE } = process.env;
 const HTTP_OK = 200;
 const HTTP_NO_CONTENT = 204;
 const HTTP_SERVER_ERROR = 500;
@@ -157,9 +158,11 @@ export default (options: any = {}) => {
   return function () {
     const app = this;
 
-    app.use(`${pathPrefix}/clear/single`, serviceClearSingle);
-    app.use(`${pathPrefix}/clear/group`, serviceClearGroup);
-    app.use(`${pathPrefix}/clear/all`, serviceClearAll);
+    if (!DISABLE_REDIS_CACHE) {
+      app.use(`${pathPrefix}/clear/single`, serviceClearSingle);
+      app.use(`${pathPrefix}/clear/group`, serviceClearGroup);
+      app.use(`${pathPrefix}/clear/all`, serviceClearAll);
+    }
   };
 }