67 lines
2.9 KiB
Java
67 lines
2.9 KiB
Java
package io.moquette.spi.impl;
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import io.moquette.parser.proto.messages.AbstractMessage;
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import io.moquette.parser.proto.messages.PublishMessage;
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import io.moquette.server.ConnectionDescriptor;
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import io.moquette.spi.ClientSession;
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import io.netty.channel.Channel;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.nio.ByteBuffer;
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import java.util.concurrent.ConcurrentMap;
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import static io.moquette.parser.proto.messages.AbstractMessage.QOSType.MOST_ONE;
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class PersistentQueueMessageSender {
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private static final Logger LOG = LoggerFactory.getLogger(PersistentQueueMessageSender.class);
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private final ConcurrentMap<String, ConnectionDescriptor> connectionDescriptors;
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public PersistentQueueMessageSender(ConcurrentMap<String, ConnectionDescriptor> connectionDescriptors) {
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this.connectionDescriptors = connectionDescriptors;
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}
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void sendPublish(ClientSession clientsession, PublishMessage pubMessage) {
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String clientId = clientsession.clientID;
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LOG.info("send publish message to <{}> on topic <{}>", clientId, pubMessage.getTopicName());
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if (LOG.isDebugEnabled()) {
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LOG.debug("directSend invoked clientId <{}> on topic <{}> QoS {} retained {} messageID {}",
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clientId, pubMessage.getTopicName(), pubMessage.getQos(), false, pubMessage.getMessageID());
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LOG.debug("content <{}>", DebugUtils.payload2Str(pubMessage.getPayload()));
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}
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if (connectionDescriptors == null) {
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throw new RuntimeException("Internal bad error, found connectionDescriptors to null while it should be " +
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"initialized, somewhere it's overwritten!!");
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}
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if (connectionDescriptors.get(clientId) == null) {
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//TODO while we were publishing to the target client, that client disconnected,
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// could happen is not an error HANDLE IT
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throw new RuntimeException(String.format("Can't find a ConnectionDescriptor for client <%s> in cache <%s>",
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clientId, connectionDescriptors));
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}
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Channel channel = connectionDescriptors.get(clientId).channel;
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LOG.trace("Session for clientId {}", clientId);
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if (channel.isWritable()) {
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LOG.debug("channel is writable");
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//if channel is writable don't enqueue
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channel.writeAndFlush(pubMessage);
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} else if (pubMessage.getQos() != MOST_ONE) {
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//enqueue to the client session
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LOG.debug("enqueue to client session");
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clientsession.enqueue(pubMessage);
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}
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}
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static PublishMessage createPublishForQos(String topic, AbstractMessage.QOSType qos, ByteBuffer message) {
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PublishMessage pubMessage = new PublishMessage();
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pubMessage.setRetainFlag(false);
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pubMessage.setTopicName(topic);
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pubMessage.setQos(qos);
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pubMessage.setPayload(message);
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return pubMessage;
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}
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}
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