50 lines
1.7 KiB
Java
50 lines
1.7 KiB
Java
import com.rabbitmq.client.BuiltinExchangeType;
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import com.rabbitmq.client.Channel;
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import com.rabbitmq.client.Connection;
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import com.rabbitmq.client.ConnectionFactory;
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public class EmitLogTopic {
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private static final String EXCHANGE_NAME = "topic_logs";
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public static void main(String[] argv) throws Exception {
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ConnectionFactory factory = new ConnectionFactory();
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factory.setHost("localhost");
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try (Connection connection = factory.newConnection();
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Channel channel = connection.createChannel()) {
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channel.exchangeDeclare(EXCHANGE_NAME, BuiltinExchangeType.TOPIC);
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String routingKey = getRouting(argv);
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String message = getMessage(argv);
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channel.basicPublish(EXCHANGE_NAME, routingKey, null, message.getBytes("UTF-8"));
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System.out.println(" [x] Sent '" + routingKey + "':'" + message + "'");
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}
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}
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private static String getRouting(String[] strings) {
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if (strings.length < 1)
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return "anonymous.info";
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return strings[0];
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}
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private static String getMessage(String[] strings) {
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if (strings.length < 2)
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return "Hello World!";
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return joinStrings(strings, " ", 1);
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}
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private static String joinStrings(String[] strings, String delimiter, int startIndex) {
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int length = strings.length;
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if (length == 0) return "";
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if (length < startIndex) return "";
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StringBuilder words = new StringBuilder(strings[startIndex]);
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for (int i = startIndex + 1; i < length; i++) {
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words.append(delimiter).append(strings[i]);
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}
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return words.toString();
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}
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}
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