void addPreferredEmails()

in src/main/java/com/googlesource/gerrit/plugins/findowners/OwnersDb.java [228:271]
43 lines of code
9 McCabe index (conditional complexity)

  void addPreferredEmails(Set<String> ownerEmails) {
    List<String> owners = new ArrayList<>(ownerEmails);
    owners.removeIf(o -> preferredEmails.get(o) != null);
    if (!owners.isEmpty()) {
      String[] ownerEmailsAsArray = new String[owners.size()];
      owners.toArray(ownerEmailsAsArray);
      Multimap<String, Account.Id> email2ids = null;
      try {
        email2ids = emails.getAccountsFor(ownerEmailsAsArray);
      } catch (Exception e) {
        logger.atSevere().withCause(e).log("accounts.byEmails failed");
        logException(logs, "getAccountsFor:" + ownerEmailsAsArray[0], e);
      }
      for (String owner : ownerEmailsAsArray) {
        String email = owner;
        try {
          if (email2ids == null) {
            errors.add(owner);
          } else {
            Collection<Account.Id> ids = email2ids.get(owner);
            if (ids == null || ids.size() != 1) {
              errors.add(owner);
            } else {
              // Accounts may have no preferred email.
              email =
                  accountCache
                      .get(ids.iterator().next())
                      .map(a -> a.account().preferredEmail())
                      .orElse(null);
            }
          }
        } catch (Exception e) {
          logger.atSevere().withCause(e).log("Fail to find preferred email of %s", owner);
          errors.add(owner);
        }
        if (email == null) {
          logger.atSevere().log("accountCache failed to find preferred email of %s", owner);
          errors.add(owner);
          email = owner;
        }
        preferredEmails.put(owner, email);
      }
    }
  }