Fetch all usage plan pages in catalog updater

lambdas/catalog-updater/index.js

@@ -176,6 +176,26 @@ function copyAnyMethod(api) {
   return api
 }
 
+/** Fetches all usage plans, combining all pages into a single array. */
+async function getAllUsagePlans() {
+  // The maximum allowed value of `limit` is 500 according to
+  // https://docs.aws.amazon.com/AWSJavaScriptSDK/latest/AWS/APIGateway.html#getUsagePlans-property
+  const defaultParams = {limit: 500}
+
+  console.log('Fetching first page of usage plans')
+  let response = await exports.gateway.getUsagePlans(defaultParams).promise()
+  const usagePlans = response.items
+
+  while (response.position) {
+    console.log(`Fetching next page of usage plans, at position=[${response.position}]`)
+    const nextParams = {...defaultParams, position: response.position}
+    response = await exports.gateway.getUsagePlans(nextParams).promise()
+    usagePlans.push(...response.items)
+  }
+
+  return usagePlans
+}
+
 function buildCatalog(swaggerFiles, sdkGeneration) {
   console.log(`results: ${JSON.stringify(swaggerFiles, null, 4)}`)
   console.log(sdkGeneration)
@@ -185,10 +205,9 @@ function buildCatalog(swaggerFiles, sdkGeneration) {
     generic: []
   }
 
-  return exports.gateway.getUsagePlans({}).promise()
-    .then((result) => {
-      console.log(`usagePlans: ${JSON.stringify(result.items, null, 4)}`)
-      let usagePlans = result.items
+  return getAllUsagePlans()
+    .then(usagePlans => {
+      console.log(`usagePlans: ${JSON.stringify(usagePlans, null, 4)}`)
       for (let i = 0; i < usagePlans.length; i++) {
           catalog.apiGateway[i] = usagePlanToCatalogObject(usagePlans[i], swaggerFiles, sdkGeneration)
       }
@@ -252,4 +271,4 @@ exports = module.exports = {
   gateway: new AWS.APIGateway(),
   handler,
   hash
-}
+}