xiangfu0 commented on a change in pull request #6872:
URL: https://github.com/apache/incubator-pinot/pull/6872#discussion_r626298375
##########
File path: pinot-spi/src/main/java/org/apache/pinot/spi/utils/NetUtils.java
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@@ -57,4 +59,62 @@ public static String getHostnameOrAddress() {
}
}
}
+
+ /**
+ * Find an open port.
+ * @return an open port
+ * @throws IOException
+ */
+ public static int findOpenPort()
+ throws IOException {
+ try (ServerSocket socket = new ServerSocket(0)) {
+ return socket.getLocalPort();
+ }
+ }
+
+ /**
+ * Find an open port，otherwise use given default port.
+ * @param defaultPort
+ * @return an open port otherwise default port
+ */
+ public static int findOpenPort(int defaultPort) {
+ if (available(defaultPort)) {
+ return defaultPort;
+ }
+ int port = defaultPort;
+ while (available(++port)) {
+ return port;
+ }
+ throw new RuntimeException("Unable to find an open port from range: [ " +
defaultPort + ", " + port + " ]");
+ }
+
+ /**
+ * Checks to see if a specific port is available.
+ *
+ * @param port the port to check for availability
+ */
+ public static boolean available(int port) {
+ ServerSocket ss = null;
+ DatagramSocket ds = null;
+ try {
+ ss = new ServerSocket(port);
+ ss.setReuseAddress(true);
+ ds = new DatagramSocket(port);
+ ds.setReuseAddress(true);
+ return true;
+ } catch (IOException e) {
Review comment:
done.
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