Add support for EDSC ordering of file links

For proper behavior in EDSC, links should be ordered as follows.

HTTP science file link
Other HTTP file links
S3 science file link
Other S3 file links

This commit updates the `cmrjs` package to handle the HTTP/S3 grouping
and the `update-granules-cmr-metadata-file-links` task to handle
proper placement of the science file.

packages/cmrjs/src/cmr-utils.js

@@ -513,7 +513,8 @@ function constructOnlineAccessUrls({
   }
 
   const urlListCalls = files.map((file) => {
-    const urls = [];
+    const distribution_urls = [];
+    const s3_urls = [];
     if (['both', 'distribution'].includes(cmrGranuleUrlType)) {
       const url = constructOnlineAccessUrl({
         file,
@@ -523,7 +524,7 @@ function constructOnlineAccessUrls({
         distributionBucketMap,
         useDirectS3Type,
       });
-      urls.push(url);
+      distribution_urls.push(url);
     }
     if (['both', 's3'].includes(cmrGranuleUrlType)) {
       const url = constructOnlineAccessUrl({
@@ -534,9 +535,9 @@ function constructOnlineAccessUrls({
         distributionBucketMap,
         useDirectS3Type,
       });
-      urls.push(url);
+      s3_urls.push(url);
     }
-    return urls;
+    return distribution_urls.concat(s3_urls);
   });
   const urlList = flatten(urlListCalls);
   return urlList.filter((urlObj) => urlObj);

tasks/update-granules-cmr-metadata-file-links/index.js

@@ -56,6 +56,26 @@ async function updateEachCmrFileAccessURLs(
   }));
 }
 
+/**
+ * Reorder each granule's files to support EDSC's expectation of the science file occurring
+ * first in the file list.
+ *
+ * @param {Array<Object>} granules - array of objects that include granule information
+ *                                   (e.g. { bucket: distribution path })
+ * @returns {Array<Object>} Array of granules with updated ordering
+ */
+function updateFileOrderForEdsc(granules) {
+  return granules.map((granule) => {
+    const scienceFileIndex = granule.files.findIndex((file) => file.type === 'data');
+
+    if (scienceFileIndex !== -1) {
+      granule.files.unshift(granule.files.splice(scienceFileIndex, 1)[0]);
+    }
+
+    return granule;
+  });
+}
+
 async function updateGranulesCmrMetadataFileLinks(event) {
   const config = event.config;
   const bucketsConfig = new BucketsConfig(config.buckets);
@@ -65,7 +85,9 @@ async function updateGranulesCmrMetadataFileLinks(event) {
   const cmrGranuleUrlType = get(config, 'cmrGranuleUrlType', 'both');
 
   const incomingETags = event.config.etags || {};
-  const granules = event.input.granules.map((g) => addEtagsToFileObjects(g, incomingETags));
+  let granules = event.input.granules.map((g) => addEtagsToFileObjects(g, incomingETags));
+  granules = updateFileOrderForEdsc(granules);
+
   const cmrFiles = granulesToCmrFileObjects(granules);
   const granulesByGranuleId = keyBy(granules, 'granuleId');