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Example 1 with AggregateConsumerClient.deserializeMessage

use of ConsumerDummy.AggregateConsumerClient.deserializeMessage in project amos2022ss02-audit-chain by amosproj.

the class ConsumerClientBlockchain method start.

/**
 * Start receiving Messages from the RabbitMQ Server.
 * @throws IOException if an I/O error occurs
 * @throws TimeoutException if the timeout expires
 */
public void start() throws IOException, TimeoutException {
    System.out.println("Starting to receive Messages.");
    Connection connection = this.factory.newConnection();
    Channel channel = connection.createChannel();
    channel.queueDeclare(QUEUE_NAME, false, false, false, null);
    System.out.println(" [*] Waiting for messages.");
    DeliverCallback deliverCallback = (consumerTag, delivery) -> {
        AggregateMessage message;
        try {
            message = (AggregateMessage) AggregateConsumerClient.deserializeMessage(delivery.getBody());
        } catch (ClassNotFoundException e) {
            throw new RuntimeException(e);
        }
        Vector<Message> messages = message.getMessages();
        Integer[] seq_numbers = new Integer[messages.size()];
        String[] transactions = new String[messages.size()];
        int iterator = 0;
        for (Message m : messages) {
            // if you use instanceOf you could accept both Messages and HmacMessages
            m = (Hmac_Message) m;
            seq_numbers[iterator] = m.getSequence_number();
            transactions[iterator] = m.getMessage();
            iterator++;
        }
        blockchain.addABlock(seq_numbers, transactions);
    // blockchain.printBlockchain();
    };
    channel.basicConsume(QUEUE_NAME, true, deliverCallback, consumerTag -> {
    });
}
Also used : DeliverCallback(com.rabbitmq.client.DeliverCallback) Message(ProducerDummy.Messages.Message) TimeoutException(java.util.concurrent.TimeoutException) IOException(java.io.IOException) AggregateConsumerClient(ConsumerDummy.AggregateConsumerClient) Connection(com.rabbitmq.client.Connection) StandardCharsets(java.nio.charset.StandardCharsets) AggregateConsumerClient.deserializeMessage(ConsumerDummy.AggregateConsumerClient.deserializeMessage) JSONException(org.json.JSONException) JSONObject(org.json.JSONObject) Vector(java.util.Vector) Gson(com.google.gson.Gson) Map(java.util.Map) AggregateMessage(ProducerDummy.Messages.AggregateMessage) AbstractClient(ProducerDummy.Client.AbstractClient) Blockchain(BlockchainImplementation.Blockchain.Blockchain) Hmac_Message(ProducerDummy.Messages.Hmac_Message) Channel(com.rabbitmq.client.Channel) Message(ProducerDummy.Messages.Message) AggregateConsumerClient.deserializeMessage(ConsumerDummy.AggregateConsumerClient.deserializeMessage) AggregateMessage(ProducerDummy.Messages.AggregateMessage) Hmac_Message(ProducerDummy.Messages.Hmac_Message) Channel(com.rabbitmq.client.Channel) Connection(com.rabbitmq.client.Connection) AggregateMessage(ProducerDummy.Messages.AggregateMessage) DeliverCallback(com.rabbitmq.client.DeliverCallback) Hmac_Message(ProducerDummy.Messages.Hmac_Message) Vector(java.util.Vector)

Aggregations

Blockchain (BlockchainImplementation.Blockchain.Blockchain)1 AggregateConsumerClient (ConsumerDummy.AggregateConsumerClient)1 AggregateConsumerClient.deserializeMessage (ConsumerDummy.AggregateConsumerClient.deserializeMessage)1 AbstractClient (ProducerDummy.Client.AbstractClient)1 AggregateMessage (ProducerDummy.Messages.AggregateMessage)1 Hmac_Message (ProducerDummy.Messages.Hmac_Message)1 Message (ProducerDummy.Messages.Message)1 Gson (com.google.gson.Gson)1 Channel (com.rabbitmq.client.Channel)1 Connection (com.rabbitmq.client.Connection)1 DeliverCallback (com.rabbitmq.client.DeliverCallback)1 IOException (java.io.IOException)1 StandardCharsets (java.nio.charset.StandardCharsets)1 Map (java.util.Map)1 Vector (java.util.Vector)1 TimeoutException (java.util.concurrent.TimeoutException)1 JSONException (org.json.JSONException)1 JSONObject (org.json.JSONObject)1