szetszwo commented on code in PR #996:
URL: https://github.com/apache/ratis/pull/996#discussion_r1431963346
##########
ratis-common/src/main/java/org/apache/ratis/util/NetUtils.java:
##########
@@ -167,4 +122,33 @@ static String address2String(InetSocketAddress address) {
}
return b.append(':').append(address.getPort()).toString();
}
+
+ /**
+ * Helper class to get free port avoiding randomness.
+ */
+ final class PortAllocator {
+
+ public static final String HOSTNAME = "localhost";
+ public static final int MIN_PORT = 15000;
+ public static final int MAX_PORT = 32000;
+ public static final AtomicInteger NEXT_PORT = new AtomicInteger(MIN_PORT);
+
+ private PortAllocator() {
+ // no instances
+ }
+
+ public static synchronized int getFreePort() {
+ int port = NEXT_PORT.getAndIncrement();
+ if (port > MAX_PORT) {
+ NEXT_PORT.set(MIN_PORT);
+ port = NEXT_PORT.getAndIncrement();
+ }
+ return port;
Review Comment:
@adoroszlai , Should we try binding it before returning? Otherwise, the
port may be already used.
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