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subscription email: do not send email if nothing has changed (#8981)

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* improved subscriptions email template

* do not send emails without content

* fixed coding style violations

* removed unnecessary isEmpty check as suggested by reviewer

* moved null check on indexableObjects in generateBodyMail

* fixed unhandled IOException

* fixed typo in bodyCommunities

* do not use != to compare strings

* fixed improper handling of empty list
This commit is contained in:
Sascha Szott
2023-11-14 20:36:52 +01:00
committed by GitHub
parent 500fbe70a3
commit 50b47b707c
2 changed files with 29 additions and 21 deletions
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34
dspace-api/src/main/java/org/dspace/subscriptions/ContentGenerator.java
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@@ -56,8 +56,16 @@ public class ContentGenerator implements SubscriptionGenerator<IndexableObject>
Locale supportedLocale = I18nUtil.getEPersonLocale(ePerson);
Email email = Email.getEmail(I18nUtil.getEmailFilename(supportedLocale, "subscriptions_content"));
email.addRecipient(ePerson.getEmail());
email.addArgument(generateBodyMail(context, indexableComm));
email.addArgument(generateBodyMail(context, indexableColl));
String bodyCommunities = generateBodyMail(context, indexableComm);
String bodyCollections = generateBodyMail(context, indexableColl);
if (bodyCommunities.equals(EMPTY) && bodyCollections.equals(EMPTY)) {
log.debug("subscription(s) of eperson {} do(es) not match any new items: nothing to send" +
" - exit silently", ePerson::getID);
return;
}
email.addArgument(bodyCommunities);
email.addArgument(bodyCollections);
email.send();
}
} catch (Exception e) {
@@ -67,21 +75,19 @@ public class ContentGenerator implements SubscriptionGenerator<IndexableObject>
}
private String generateBodyMail(Context context, List<IndexableObject> indexableObjects) {
if (indexableObjects == null || indexableObjects.isEmpty()) {
return EMPTY;
}
try {
ByteArrayOutputStream out = new ByteArrayOutputStream();
out.write("\n".getBytes(UTF_8));
if (indexableObjects.size() > 0) {
for (IndexableObject indexableObject : indexableObjects) {
out.write("\n".getBytes(UTF_8));
Item item = (Item) indexableObject.getIndexedObject();
String entityType = itemService.getEntityTypeLabel(item);
Optional.ofNullable(entityType2Disseminator.get(entityType))
.orElseGet(() -> entityType2Disseminator.get("Item"))
.disseminate(context, item, out);
}
return out.toString();
} else {
out.write("No items".getBytes(UTF_8));
for (IndexableObject indexableObject : indexableObjects) {
out.write("\n".getBytes(UTF_8));
Item item = (Item) indexableObject.getIndexedObject();
String entityType = itemService.getEntityTypeLabel(item);
Optional.ofNullable(entityType2Disseminator.get(entityType))
.orElseGet(() -> entityType2Disseminator.get("Item"))
.disseminate(context, item, out);
}
return out.toString();
} catch (Exception e) {