reduced memory usage of generate command

src/generatePrefixesList.js

@@ -8,10 +8,8 @@ import { AS } from "./model";
 
 const apiTimeout = 120000;
 const clientId = "ntt-bgpalerter";
-const rpki = new RpkiValidator({clientId});
 import axiosEnrich from "./utils/axiosEnrich";
 
-
 module.exports = function generatePrefixes(inputParameters) {
     let {
         asnList,
@@ -31,6 +29,8 @@ module.exports = function generatePrefixes(inputParameters) {
         downstreams
     } = inputParameters;
 
+    const rpki = new RpkiValidator({clientId});
+
     exclude = exclude || [];
     logger = logger || console.log;
     group = group || "noc";
@@ -347,7 +347,17 @@ module.exports = function generatePrefixes(inputParameters) {
                     logger(`Cannot download more specific prefixes ${e}`);
                 })
         })
-        .then(() => rpki.preCache())
+        .then(() => {
+            return rpki.getAvailableConnectors()
+                .then((connectors) => {
+                    rpki.setConnector(connectors[0]);
+
+                    if (Object.keys(generateList).length > 2000) {
+                        return rpki.preCache();
+                    }
+                })
+                .catch(() => rpki.preCache());
+        })
         .then(() => { // Check
             return Promise
                 .all(Object.keys(generateList).map(prefix => validatePrefix(generateList[prefix].asn[0], prefix)))
@@ -381,7 +391,7 @@ module.exports = function generatePrefixes(inputParameters) {
             return batchPromises(1, asnList, getNeighbors)
                 .then(asnNeighbors => {
                     generateMonitoredAsObject(createASesRules, asnNeighbors);
-                })
+                });
             // Otherwise nothing
         })
         .then(() => {