CLDSRV-740: Add healthcheck internal route s3 port

Author: BourgoisMickael

lib/Config.js

@@ -1548,6 +1548,11 @@ class Config extends EventEmitter {
             this.healthChecks.allowFrom = defaultHealthChecks.allowFrom
                 .concat(config.healthChecks.allowFrom);
         }
+        /**
+         * CLDSRV-740: S3C with nginx s3-frontend needs the healthcheck on the
+         * same port as s3 to allow nginx upstream failover based on healthcheck
+         */
+        this.healthChecks.enableInternalRoute = config.healthChecks?.enableInternalRoute || false;
 
         if (config.certFilePaths) {
             assert(typeof config.certFilePaths === 'object' &&

lib/utilities/internalHandlers.js

@@ -4,6 +4,8 @@ const routeWorkflowEngineOperator =
       require('../routes/routeWorkflowEngineOperator');
 const { reportHandler } = require('./reportHandler');
 const routeVeeam = require('../routes/routeVeeam').routeVeeam;
+const { healthcheckHandler } = require('./healthcheckHandler');
+const { config } = require('../Config');
 
 const internalHandlers = {
     backbeat: routeBackbeat,
@@ -13,6 +15,14 @@ const internalHandlers = {
     veeam: routeVeeam,
 };
 
+if (config.healthChecks.enableInternalRoute) {
+    // CLDSRV-740: S3C with the healthcheck on s3 port needs the internal route
+    internalHandlers.healthcheck = function s3InternalHealthcheckHandler(clientIP, req, res, log, statsClient) {
+        const deep = req.url === '/_/healthcheck/deep';
+        return healthcheckHandler(clientIP, req, res, log, statsClient, deep);
+    };
+}
+
 module.exports = {
     internalHandlers,
 };