[9.0] Update TransportVersion to support a new model (elastic#131488) (elastic#131887)

* Update `TransportVersion` to support a new model (elastic#131488)

This change updates `TransportVersion` to support our new model while still allowing the old model to 
work as well giving us time to migrate.

* fix tests

Author: jdconrad

server/src/main/java/org/elasticsearch/TransportVersion.java

@@ -19,7 +19,6 @@
 import java.util.Map;
 import java.util.Set;
 import java.util.TreeSet;
-import java.util.function.IntFunction;
 
 /**
  * <p>Transport version is used to coordinate compatible wire protocol communication between nodes, at a fine-grained level.  This replaces
@@ -276,16 +275,6 @@ static TransportVersion def(int id) {
      */
     static final List<TransportVersion> DEFINED_VERSIONS = collectAllVersionIdsDefinedInClass(TransportVersions.class);
 
-    // the highest transport version constant defined
-    static final TransportVersion LATEST_DEFINED;
-    static {
-        LATEST_DEFINED = DEFINED_VERSIONS.getLast();
-
-        // see comment on IDS field
-        // now we're registered all the transport versions, we can clear the map
-        IDS = null;
-    }
-
     public static List<TransportVersion> collectAllVersionIdsDefinedInClass(Class<?> cls) {
         Map<Integer, String> versionIdFields = new HashMap<>();
         List<TransportVersion> definedTransportVersions = new ArrayList<>();
@@ -327,8 +316,6 @@ public static List<TransportVersion> collectAllVersionIdsDefinedInClass(Class<?>
         return List.copyOf(definedTransportVersions);
     }
 
-    static final IntFunction<String> VERSION_LOOKUP = ReleaseVersions.generateVersionsLookup(TransportVersions.class, LATEST_DEFINED.id());
-
     // no instance
     private TransportVersions() {}
 }

server/src/main/java/org/elasticsearch/TransportVersions.java

@@ -0,0 +1 @@
+placeholder,8840007

server/src/main/resources/transport/latest/8.18.csv

@@ -0,0 +1 @@
+placeholder,8841064

server/src/main/resources/transport/latest/8.19.csv

@@ -0,0 +1 @@
+placeholder,9000014

server/src/main/resources/transport/latest/9.0.csv

@@ -0,0 +1 @@
+placeholder,9112003

server/src/main/resources/transport/latest/9.1.csv

@@ -0,0 +1 @@
+placeholder,9130000

server/src/main/resources/transport/latest/9.2.csv

@@ -34,7 +34,7 @@ public class TransportVersionTests extends ESTestCase {
      * If the test fails, there is something wrong with your backport PR.
      */
     public void testMaximumAllowedTransportVersion() {
-        assertThat(TransportVersions.LATEST_DEFINED.isPatchFrom(TransportVersions.INITIAL_ELASTICSEARCH_9_0), is(true));
+        assertThat(TransportVersion.current().isPatchFrom(TransportVersions.INITIAL_ELASTICSEARCH_9_0), is(true));
     }
 
     public void testVersionComparison() {
@@ -229,4 +229,112 @@ public void testDuplicateConstants() {
             previous = next;
         }
     }
+
+    public void testFromName() {
+        assertThat(TransportVersion.fromName("test_0"), is(new TransportVersion("test_0", 3001000, null)));
+        assertThat(TransportVersion.fromName("test_1"), is(new TransportVersion("test_1", 3002000, null)));
+        assertThat(
+            TransportVersion.fromName("test_2"),
+            is(
+                new TransportVersion(
+                    "test_2",
+                    3003000,
+                    new TransportVersion("test_2", 2001001, new TransportVersion("test_2", 1001001, null))
+                )
+            )
+        );
+        assertThat(
+            TransportVersion.fromName("test_3"),
+            is(new TransportVersion("test_3", 3003001, new TransportVersion("test_3", 2001002, null)))
+        );
+        assertThat(
+            TransportVersion.fromName("test_4"),
+            is(
+                new TransportVersion(
+                    "test_4",
+                    3003002,
+                    new TransportVersion("test_4", 2001003, new TransportVersion("test_4", 1001002, null))
+                )
+            )
+        );
+    }
+
+    public void testSupports() {
+        TransportVersion test0 = TransportVersion.fromName("test_0");
+        assertThat(new TransportVersion(null, 2003000, null).supports(test0), is(false));
+        assertThat(new TransportVersion(null, 3001000, null).supports(test0), is(true));
+        assertThat(new TransportVersion(null, 100001001, null).supports(test0), is(true));
+
+        TransportVersion test1 = TransportVersion.fromName("test_1");
+        assertThat(new TransportVersion(null, 2003000, null).supports(test1), is(false));
+        assertThat(new TransportVersion(null, 3001000, null).supports(test1), is(false));
+        assertThat(new TransportVersion(null, 3001001, null).supports(test1), is(false));
+        assertThat(new TransportVersion(null, 3002000, null).supports(test1), is(true));
+        assertThat(new TransportVersion(null, 100001000, null).supports(test1), is(true));
+        assertThat(new TransportVersion(null, 100001001, null).supports(test1), is(true));
+
+        TransportVersion test2 = TransportVersion.fromName("test_2");
+        assertThat(new TransportVersion(null, 1001000, null).supports(test2), is(false));
+        assertThat(new TransportVersion(null, 1001001, null).supports(test2), is(true));
+        assertThat(new TransportVersion(null, 1001002, null).supports(test2), is(true));
+        assertThat(new TransportVersion(null, 1002000, null).supports(test2), is(false));
+        assertThat(new TransportVersion(null, 1002001, null).supports(test2), is(false));
+        assertThat(new TransportVersion(null, 2001000, null).supports(test2), is(false));
+        assertThat(new TransportVersion(null, 2001001, null).supports(test2), is(true));
+        assertThat(new TransportVersion(null, 2001002, null).supports(test2), is(true));
+        assertThat(new TransportVersion(null, 2003000, null).supports(test2), is(false));
+        assertThat(new TransportVersion(null, 2003001, null).supports(test2), is(false));
+        assertThat(new TransportVersion(null, 3001000, null).supports(test2), is(false));
+        assertThat(new TransportVersion(null, 3001001, null).supports(test2), is(false));
+        assertThat(new TransportVersion(null, 3003000, null).supports(test2), is(true));
+        assertThat(new TransportVersion(null, 3003001, null).supports(test2), is(true));
+        assertThat(new TransportVersion(null, 3003002, null).supports(test2), is(true));
+        assertThat(new TransportVersion(null, 3003003, null).supports(test2), is(true));
+        assertThat(new TransportVersion(null, 100001000, null).supports(test2), is(true));
+        assertThat(new TransportVersion(null, 100001001, null).supports(test2), is(true));
+
+        TransportVersion test3 = TransportVersion.fromName("test_3");
+        assertThat(new TransportVersion(null, 1001001, null).supports(test3), is(false));
+        assertThat(new TransportVersion(null, 1001002, null).supports(test3), is(false));
+        assertThat(new TransportVersion(null, 1001003, null).supports(test3), is(false));
+        assertThat(new TransportVersion(null, 1002001, null).supports(test3), is(false));
+        assertThat(new TransportVersion(null, 1002002, null).supports(test3), is(false));
+        assertThat(new TransportVersion(null, 2001001, null).supports(test3), is(false));
+        assertThat(new TransportVersion(null, 2001002, null).supports(test3), is(true));
+        assertThat(new TransportVersion(null, 2001003, null).supports(test3), is(true));
+        assertThat(new TransportVersion(null, 2003000, null).supports(test3), is(false));
+        assertThat(new TransportVersion(null, 2003001, null).supports(test3), is(false));
+        assertThat(new TransportVersion(null, 3001000, null).supports(test3), is(false));
+        assertThat(new TransportVersion(null, 3001001, null).supports(test3), is(false));
+        assertThat(new TransportVersion(null, 3003000, null).supports(test3), is(false));
+        assertThat(new TransportVersion(null, 3003001, null).supports(test3), is(true));
+        assertThat(new TransportVersion(null, 3003002, null).supports(test3), is(true));
+        assertThat(new TransportVersion(null, 3003003, null).supports(test3), is(true));
+        assertThat(new TransportVersion(null, 3004000, null).supports(test3), is(true));
+        assertThat(new TransportVersion(null, 100001000, null).supports(test3), is(true));
+        assertThat(new TransportVersion(null, 100001001, null).supports(test3), is(true));
+
+        TransportVersion test4 = TransportVersion.fromName("test_4");
+        assertThat(new TransportVersion(null, 1001001, null).supports(test4), is(false));
+        assertThat(new TransportVersion(null, 1001002, null).supports(test4), is(true));
+        assertThat(new TransportVersion(null, 1001003, null).supports(test4), is(true));
+        assertThat(new TransportVersion(null, 1002001, null).supports(test4), is(false));
+        assertThat(new TransportVersion(null, 1002002, null).supports(test4), is(false));
+        assertThat(new TransportVersion(null, 1002003, null).supports(test3), is(false));
+        assertThat(new TransportVersion(null, 2001002, null).supports(test4), is(false));
+        assertThat(new TransportVersion(null, 2001003, null).supports(test4), is(true));
+        assertThat(new TransportVersion(null, 2001004, null).supports(test4), is(true));
+        assertThat(new TransportVersion(null, 2003000, null).supports(test4), is(false));
+        assertThat(new TransportVersion(null, 2003001, null).supports(test4), is(false));
+        assertThat(new TransportVersion(null, 3001000, null).supports(test4), is(false));
+        assertThat(new TransportVersion(null, 3001001, null).supports(test4), is(false));
+        assertThat(new TransportVersion(null, 3003000, null).supports(test4), is(false));
+        assertThat(new TransportVersion(null, 3003001, null).supports(test4), is(false));
+        assertThat(new TransportVersion(null, 3003002, null).supports(test4), is(true));
+        assertThat(new TransportVersion(null, 3003003, null).supports(test4), is(true));
+        assertThat(new TransportVersion(null, 3003004, null).supports(test4), is(true));
+        assertThat(new TransportVersion(null, 3004000, null).supports(test4), is(true));
+        assertThat(new TransportVersion(null, 100001000, null).supports(test4), is(true));
+        assertThat(new TransportVersion(null, 100001001, null).supports(test4), is(true));
+    }
 }

server/src/test/java/org/elasticsearch/TransportVersionTests.java

@@ -0,0 +1,5 @@
+test_0.csv
+test_1.csv
+test_2.csv
+test_3.csv
+test_4.csv

server/src/test/resources/transport/constant/manifest.txt

@@ -0,0 +1 @@
+100001000,3001000