From d5f5873e74455fcca9c4392cf4493c3c6d6d149f Mon Sep 17 00:00:00 2001
From: Daniele Manni <BurnedMarshal@users.noreply.github.com>
Date: Thu, 19 Mar 2020 11:37:02 +0100
Subject: [PATCH] [#171839291] Refresh of IDP Metadata on interval (#609)

---
 README.md     |  1 +
 src/app.ts    | 17 +++++++++++++++++
 src/config.ts | 11 +++++++++++
 3 files changed, 29 insertions(+)

diff --git a/README.md b/README.md
index 41e8231af..3aa06c59c 100644
--- a/README.md
+++ b/README.md
@@ -164,6 +164,7 @@ Those are all Environment variables needed by the application:
 | IDP_METADATA_URL                       | Url to download SPID IDPs metadata from                                           | string |
 | SPID_TESTENV_URL                       | Url to SPID Testenv 2                                                             | string |
 | SPID_VALIDATOR_URL                     | Url to SPID Validator                                                             | string |
+| IDP_METADATA_REFRESH_INTERVAL_SECONDS  | The number of seconds when the IDPs Metadata are refreshed                        | int    |
 | CACHE_MAX_AGE_SECONDS                  | The value in seconds for duration of in-memory api cache                          | int    |
 | APICACHE_DEBUG                         | When is `true` enable the apicache debug mode                                     | boolean |
 | ALLOW_MULTIPLE_SESSIONS                | When is `true` allow multiple sessions for an user (default `false`)              | boolean |
diff --git a/src/app.ts b/src/app.ts
index 396e54ead..75d910700 100644
--- a/src/app.ts
+++ b/src/app.ts
@@ -10,6 +10,7 @@ import {
   endpointOrConnectionString,
   getClientProfileRedirectionUrl,
   hubName,
+  IDP_METADATA_REFRESH_INTERVAL_SECONDS,
   PAGOPA_CLIENT,
   REDIS_CLIENT,
   samlConfig,
@@ -254,6 +255,22 @@ export function newApp(
           IDP_METADATA_CONTROLLER
         )
       );
+      return _;
+    })
+    .map(_ => {
+      // Schedule automatic idpMetadataRefresher
+      const startIdpMetadataRefreshTimer = setInterval(
+        () =>
+          _.idpMetadataRefresher()
+            .run()
+            .catch(e => {
+              log.error("loadSpidStrategyOptions|error:%s", e);
+            }),
+        IDP_METADATA_REFRESH_INTERVAL_SECONDS * 1000
+      );
+      _.app.on("server:stop", () =>
+        clearInterval(startIdpMetadataRefreshTimer)
+      );
       return _.app;
     })
     .map(_ => {
diff --git a/src/config.ts b/src/config.ts
index 6af263d09..a183edc95 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -142,6 +142,17 @@ const maybeSpidTestenvOption = fromNullable(SPID_TESTENV_URL).map(_ => ({
   [_]: true
 }));
 
+// Set default idp metadata refresh time to 7 days
+export const DEFAULT_IDP_METADATA_REFRESH_INTERVAL_SECONDS = 3600 * 24 * 7;
+export const IDP_METADATA_REFRESH_INTERVAL_SECONDS: number = process.env
+  .IDP_METADATA_REFRESH_INTERVAL_SECONDS
+  ? parseInt(process.env.IDP_METADATA_REFRESH_INTERVAL_SECONDS, 10)
+  : DEFAULT_IDP_METADATA_REFRESH_INTERVAL_SECONDS;
+log.info(
+  "IDP metadata refresh interval set to %s seconds",
+  IDP_METADATA_REFRESH_INTERVAL_SECONDS
+);
+
 export const serviceProviderConfig: IServiceProviderConfig = {
   IDPMetadataUrl: IDP_METADATA_URL,
   organization: {