From 8bcf08d415d417d8fa804d67d2a47c62f495730d Mon Sep 17 00:00:00 2001
From: Vladimir Volek <volek.vladimir@gmail.com>
Date: Tue, 5 Dec 2023 15:07:06 +0100
Subject: [PATCH] feat: feature flags

---
 config/development.yaml |  2 ++
 src/app.ts              | 15 ++++++++++-----
 src/config.ts           |  2 ++
 3 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/config/development.yaml b/config/development.yaml
index 23de9ac1..ab441f6c 100644
--- a/config/development.yaml
+++ b/config/development.yaml
@@ -2,6 +2,8 @@ server:
   listenAddress: "localhost"
   port: 3000
   debug: true
+  features:
+    - CIP-1694
 dbSync:
   host: "cdbsync-dev.mydomain.com"
   port: 5432
diff --git a/src/app.ts b/src/app.ts
index 5996aa4f..a591492a 100644
--- a/src/app.ts
+++ b/src/app.ts
@@ -12,6 +12,10 @@ const esmRequire = createRequire(import.meta.url);
 const packageJson = esmRequire('../package.json');
 
 const config = getConfig();
+const isCIP1694Active = config.server.features.some(
+  feature => feature.toLowerCase() === 'CIP-1694'.toLowerCase(),
+);
+
 const start = (options = {}): FastifyInstance => {
   const app = fastify(options);
 
@@ -111,11 +115,12 @@ const start = (options = {}): FastifyInstance => {
   registerRoute(app, import('./routes/epochs/number/stakes/index.js'));
   registerRoute(app, import('./routes/epochs/number/stakes/pool-id.js'));
 
-  // governance
-  registerRoute(app, import('./routes/governance/dreps/index.js'));
-  registerRoute(app, import('./routes/governance/dreps/hash/index.js'));
-  registerRoute(app, import('./routes/governance/dreps/hash/distribution.js'));
-
+  if (isCIP1694Active) {
+    // governance
+    registerRoute(app, import('./routes/governance/dreps/index.js'));
+    registerRoute(app, import('./routes/governance/dreps/hash/index.js'));
+    registerRoute(app, import('./routes/governance/dreps/hash/distribution.js'));
+  }
   // health
   registerRoute(app, import('./routes/health/index.js'));
   registerRoute(app, import('./routes/health/clock.js'));
diff --git a/src/config.ts b/src/config.ts
index e57225b4..f54b9dcf 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -18,6 +18,7 @@ export const loadConfig = () => {
     !config.has('server.prometheusMetrics')
       ? process.env.BLOCKFROST_CONFIG_SERVER_PROMETHEUS_METRICS === 'true'
       : config.get<boolean>('server.prometheusMetrics');
+  const features = config.get<string[]>('server.features');
 
   // dbSync
   const databaseSyncHost =
@@ -53,6 +54,7 @@ export const loadConfig = () => {
       port,
       debug,
       prometheusMetrics,
+      features,
     },
     dbSync: {
       host: databaseSyncHost,