| 1 | package fr.sii.ogham.core.sender; | |
| 2 | ||
| 3 | import static fr.sii.ogham.core.util.LogUtils.logString; | |
| 4 | ||
| 5 | import java.util.ArrayList; | |
| 6 | import java.util.Arrays; | |
| 7 | import java.util.List; | |
| 8 | ||
| 9 | import org.slf4j.Logger; | |
| 10 | import org.slf4j.LoggerFactory; | |
| 11 | ||
| 12 | import fr.sii.ogham.core.exception.MessageException; | |
| 13 | import fr.sii.ogham.core.exception.MessageNotSentException; | |
| 14 | import fr.sii.ogham.core.exception.MultipleCauseExceptionWrapper; | |
| 15 | import fr.sii.ogham.core.message.Message; | |
| 16 | ||
| 17 | /** | |
| 18 | * Decorator implementation that will try to send the message until one | |
| 19 | * decorated sender is able to send it. The aim is that if a sender fails to | |
| 20 | * send the message, then another will send it. It can ensure that message will | |
| 21 | * be sent at any costs. | |
| 22 | * | |
| 23 | * @author Aurélien Baudet | |
| 24 | * | |
| 25 | */ | |
| 26 | public class FallbackSender implements MessageSender { | |
| 27 | private static final Logger LOG = LoggerFactory.getLogger(FallbackSender.class); | |
| 28 | ||
| 29 | /** | |
| 30 | * The list of senders to try one by one until one succeeds | |
| 31 | */ | |
| 32 | private List<MessageSender> senders; | |
| 33 | ||
| 34 | /** | |
| 35 | * Initialize either none, one or several senders to try one by one until | |
| 36 | * one succeeds. | |
| 37 | * | |
| 38 | * @param senders | |
| 39 | * the senders to register | |
| 40 | */ | |
| 41 | public FallbackSender(MessageSender... senders) { | |
| 42 | this(Arrays.asList(senders)); | |
| 43 | } | |
| 44 | ||
| 45 | /** | |
| 46 | * Initialize with the provided list of senders to try one by one until one | |
| 47 | * succeeds. | |
| 48 | * | |
| 49 | * @param senders | |
| 50 | * the senders to register | |
| 51 | */ | |
| 52 | public FallbackSender(List<MessageSender> senders) { | |
| 53 | super(); | |
| 54 | this.senders = senders; | |
| 55 | } | |
| 56 | ||
| 57 | @Override | |
| 58 | @SuppressWarnings("squid:S2221") | |
| 59 | public void send(Message message) throws MessageException { | |
| 60 | List<Exception> causes = new ArrayList<>(); | |
| 61 | for (MessageSender sender : senders) { | |
| 62 | try { | |
| 63 | LOG.debug("Try to send message {} using sender {}", logString(message), sender); | |
| 64 |
2
1. send : removed call to fr/sii/ogham/core/sender/MessageSender::send → NO_COVERAGE 2. send : removed call to fr/sii/ogham/core/sender/MessageSender::send → KILLED |
sender.send(message); |
| 65 | LOG.debug("Message {} sent using sender {}", logString(message), sender); | |
| 66 | return; | |
| 67 | } catch (Exception e) { | |
| 68 | LOG.debug("Message {} couldn't be sent using sender {}. Cause: {}", logString(message), sender, e.getMessage()); | |
| 69 | LOG.trace("", e); | |
| 70 | causes.add(e); | |
| 71 | } | |
| 72 | } | |
| 73 | throw new MessageNotSentException("No sender could handle the message", message, new MultipleCauseExceptionWrapper(causes)); | |
| 74 | } | |
| 75 | ||
| 76 | /** | |
| 77 | * Register a new sender to try. The sender is added at the end. It will be | |
| 78 | * used only after all previously registered senders have failed. | |
| 79 | * | |
| 80 | * @param sender | |
| 81 | * the sender to register | |
| 82 | */ | |
| 83 | public void addSender(MessageSender sender) { | |
| 84 | senders.add(sender); | |
| 85 | } | |
| 86 | } | |
Mutations | ||
| 64 |
1.1 2.2 |