Fixed failing members import with label associations

no issue

- When processing entries with new labels in parallel Bookshelf relations is trying to create them which caused unique key constraints to fail. To avoid the failure, all labels should be pre-created before proceeding with creating members

core/server/api/canary/members.js

@@ -126,6 +126,20 @@ const findOrCreateLabels = async (labels, options) => {
     }));
 };
 
+const getUniqueMemberLabels = (members) => {
+    const allLabels = [];
+
+    members.forEach((member) => {
+        const labels = (member.labels && member.labels.split(',')) || [];
+
+        if (labels.length) {
+            allLabels.push(...labels);
+        }
+    });
+
+    return _.uniq(allLabels);
+};
+
 const members = {
     docName: 'members',
 
@@ -438,6 +452,11 @@ const members = {
                 importSetLabels.push(importLabel);
             }
 
+            // NOTE: member-specific labels have to be pre-created as they cause conflicts when processed
+            //       in parallel
+            const memberLabels = serializeMemberLabels(getUniqueMemberLabels(frame.data.members));
+            await findOrCreateLabels(memberLabels, frame.options);
+
             return Promise.resolve().then(() => {
                 const sanitized = sanitizeInput(frame.data.members);
                 duplicateStripeCustomerIdCount = frame.data.members.length - sanitized.length;