Replace exclusionary words whitelist and blacklist in the places that…

… won't impact backwards compatibility (opensearch-project#2178)

* Replace the exclusionary word whitelist with allowlist, and blacklist with denylist, in code commet and internal variable/method/class/package name.

Signed-off-by: Andreas <apre@gmx.at>

TESTING.md

@@ -245,7 +245,7 @@ The YAML REST tests support all the options provided by the randomized runner, p
 
 -   `tests.rest.suite`: comma separated paths of the test suites to be run (by default loaded from /rest-api-spec/test). It is possible to run only a subset of the tests providing a sub-folder or even a single yaml file (the default /rest-api-spec/test prefix is optional when files are loaded from classpath) e.g. `-Dtests.rest.suite=index,get,create/10_with_id`
 
--   `tests.rest.blacklist`: comma separated globs that identify tests that are blacklisted and need to be skipped e.g. `-Dtests.rest.blacklist=index/**/Index document,get/10_basic/**`
+-   `tests.rest.blacklist`: comma separated globs that identify tests that are denylisted and need to be skipped e.g. `-Dtests.rest.blacklist=index/**/Index document,get/10_basic/**`
 
 Java REST tests can be run with the "javaRestTest" task.
 

client/rest/src/main/java/org/opensearch/client/NodeSelector.java

@@ -48,7 +48,7 @@ public interface NodeSelector {
      * iterate the nodes as many times as they need.
      * <p>
      * This may be called twice per request: first for "living" nodes that
-     * have not been blacklisted by previous errors. If the selector removes
+     * have not been denylisted by previous errors. If the selector removes
      * all nodes from the list or if there aren't any living nodes then the
      * {@link RestClient} will call this method with a list of "dead" nodes.
      * <p>

client/rest/src/main/java/org/opensearch/client/RestClient.java

@@ -125,7 +125,7 @@ public class RestClient implements Closeable {
     final List<Header> defaultHeaders;
     private final String pathPrefix;
     private final AtomicInteger lastNodeIndex = new AtomicInteger(0);
-    private final ConcurrentMap<HttpHost, DeadHostState> blacklist = new ConcurrentHashMap<>();
+    private final ConcurrentMap<HttpHost, DeadHostState> denylist = new ConcurrentHashMap<>();
     private final FailureListener failureListener;
     private final NodeSelector nodeSelector;
     private volatile NodeTuple<List<Node>> nodeTuple;
@@ -246,7 +246,7 @@ public synchronized void setNodes(Collection<Node> nodes) {
             authCache.put(node.getHost(), new BasicScheme());
         }
         this.nodeTuple = new NodeTuple<>(Collections.unmodifiableList(new ArrayList<>(nodesByHost.values())), authCache);
-        this.blacklist.clear();
+        this.denylist.clear();
     }
 
     /**
@@ -448,7 +448,7 @@ public void cancelled() {
      */
     private NodeTuple<Iterator<Node>> nextNodes() throws IOException {
         NodeTuple<List<Node>> nodeTuple = this.nodeTuple;
-        Iterable<Node> hosts = selectNodes(nodeTuple, blacklist, lastNodeIndex, nodeSelector);
+        Iterable<Node> hosts = selectNodes(nodeTuple, denylist, lastNodeIndex, nodeSelector);
         return new NodeTuple<>(hosts.iterator(), nodeTuple.authCache);
     }
 
@@ -458,17 +458,17 @@ private NodeTuple<Iterator<Node>> nextNodes() throws IOException {
      */
     static Iterable<Node> selectNodes(
         NodeTuple<List<Node>> nodeTuple,
-        Map<HttpHost, DeadHostState> blacklist,
+        Map<HttpHost, DeadHostState> denylist,
         AtomicInteger lastNodeIndex,
         NodeSelector nodeSelector
     ) throws IOException {
         /*
          * Sort the nodes into living and dead lists.
          */
-        List<Node> livingNodes = new ArrayList<>(Math.max(0, nodeTuple.nodes.size() - blacklist.size()));
-        List<DeadNode> deadNodes = new ArrayList<>(blacklist.size());
+        List<Node> livingNodes = new ArrayList<>(Math.max(0, nodeTuple.nodes.size() - denylist.size()));
+        List<DeadNode> deadNodes = new ArrayList<>(denylist.size());
         for (Node node : nodeTuple.nodes) {
-            DeadHostState deadness = blacklist.get(node.getHost());
+            DeadHostState deadness = denylist.get(node.getHost());
             if (deadness == null || deadness.shallBeRetried()) {
                 livingNodes.add(node);
             } else {
@@ -526,9 +526,9 @@ static Iterable<Node> selectNodes(
      * Receives as an argument the host that was used for the successful request.
      */
     private void onResponse(Node node) {
-        DeadHostState removedHost = this.blacklist.remove(node.getHost());
+        DeadHostState removedHost = this.denylist.remove(node.getHost());
         if (logger.isDebugEnabled() && removedHost != null) {
-            logger.debug("removed [" + node + "] from blacklist");
+            logger.debug("removed [" + node + "] from denylist");
         }
     }
 
@@ -538,19 +538,19 @@ private void onResponse(Node node) {
      */
     private void onFailure(Node node) {
         while (true) {
-            DeadHostState previousDeadHostState = blacklist.putIfAbsent(
+            DeadHostState previousDeadHostState = denylist.putIfAbsent(
                 node.getHost(),
                 new DeadHostState(DeadHostState.DEFAULT_TIME_SUPPLIER)
             );
             if (previousDeadHostState == null) {
                 if (logger.isDebugEnabled()) {
-                    logger.debug("added [" + node + "] to blacklist");
+                    logger.debug("added [" + node + "] to denylist");
                 }
                 break;
             }
-            if (blacklist.replace(node.getHost(), previousDeadHostState, new DeadHostState(previousDeadHostState))) {
+            if (denylist.replace(node.getHost(), previousDeadHostState, new DeadHostState(previousDeadHostState))) {
                 if (logger.isDebugEnabled()) {
-                    logger.debug("updated [" + node + "] already in blacklist");
+                    logger.debug("updated [" + node + "] already in denylist");
                 }
                 break;
             }
@@ -718,8 +718,8 @@ static class NodeTuple<T> {
     }
 
     /**
-     * Contains a reference to a blacklisted node and the time until it is
-     * revived. We use this so we can do a single pass over the blacklist.
+     * Contains a reference to a denylisted node and the time until it is
+     * revived. We use this so we can do a single pass over the denylist.
      */
     private static class DeadNode implements Comparable<DeadNode> {
         final Node node;

client/rest/src/test/java/org/opensearch/client/RestClientMultipleHostsTests.java

@@ -62,7 +62,7 @@
 import static org.junit.Assert.fail;
 
 /**
- * Tests for {@link RestClient} behaviour against multiple hosts: fail-over, blacklisting etc.
+ * Tests for {@link RestClient} behaviour against multiple hosts: fail-over, denylisting etc.
  * Relies on a mock http client to intercept requests and return desired responses based on request path.
  */
 public class RestClientMultipleHostsTests extends RestClientTestCase {
@@ -154,7 +154,7 @@ public void testRoundRobinRetryErrors() throws Exception {
             fail("request should have failed");
         } catch (ResponseException e) {
             Set<HttpHost> hostsSet = hostsSet();
-            // first request causes all the hosts to be blacklisted, the returned exception holds one suppressed exception each
+            // first request causes all the hosts to be denylisted, the returned exception holds one suppressed exception each
             failureListener.assertCalled(nodes);
             do {
                 Response response = e.getResponse();
@@ -175,7 +175,7 @@ public void testRoundRobinRetryErrors() throws Exception {
             assertEquals("every host should have been used but some weren't: " + hostsSet, 0, hostsSet.size());
         } catch (IOException e) {
             Set<HttpHost> hostsSet = hostsSet();
-            // first request causes all the hosts to be blacklisted, the returned exception holds one suppressed exception each
+            // first request causes all the hosts to be denylisted, the returned exception holds one suppressed exception each
             failureListener.assertCalled(nodes);
             do {
                 HttpHost httpHost = HttpHost.create(e.getMessage());
@@ -211,13 +211,13 @@ public void testRoundRobinRetryErrors() throws Exception {
                         "host [" + response.getHost() + "] not found, most likely used multiple times",
                         hostsSet.remove(response.getHost())
                     );
-                    // after the first request, all hosts are blacklisted, a single one gets resurrected each time
+                    // after the first request, all hosts are denylisted, a single one gets resurrected each time
                     failureListener.assertCalled(response.getHost());
                     assertEquals(0, e.getSuppressed().length);
                 } catch (IOException e) {
                     HttpHost httpHost = HttpHost.create(e.getMessage());
                     assertTrue("host [" + httpHost + "] not found, most likely used multiple times", hostsSet.remove(httpHost));
-                    // after the first request, all hosts are blacklisted, a single one gets resurrected each time
+                    // after the first request, all hosts are denylisted, a single one gets resurrected each time
                     failureListener.assertCalled(httpHost);
                     assertEquals(0, e.getSuppressed().length);
                 }

client/rest/src/test/java/org/opensearch/client/RestClientTests.java

@@ -260,11 +260,11 @@ public String toString() {
 
         NodeTuple<List<Node>> nodeTuple = new NodeTuple<>(Arrays.asList(n1, n2, n3), null);
 
-        Map<HttpHost, DeadHostState> emptyBlacklist = Collections.emptyMap();
+        Map<HttpHost, DeadHostState> emptyDenylist = Collections.emptyMap();
 
         // Normal cases where the node selector doesn't reject all living nodes
-        assertSelectLivingHosts(Arrays.asList(n1, n2, n3), nodeTuple, emptyBlacklist, NodeSelector.ANY);
-        assertSelectLivingHosts(Arrays.asList(n2, n3), nodeTuple, emptyBlacklist, not1);
+        assertSelectLivingHosts(Arrays.asList(n1, n2, n3), nodeTuple, emptyDenylist, NodeSelector.ANY);
+        assertSelectLivingHosts(Arrays.asList(n2, n3), nodeTuple, emptyDenylist, not1);
 
         /*
          * Try a NodeSelector that excludes all nodes. This should
@@ -274,83 +274,83 @@ public String toString() {
             String message = "NodeSelector [NONE] rejected all nodes, living ["
                 + "[host=http://1, version=1], [host=http://2, version=2], "
                 + "[host=http://3, version=3]] and dead []";
-            assertEquals(message, assertSelectAllRejected(nodeTuple, emptyBlacklist, noNodes));
+            assertEquals(message, assertSelectAllRejected(nodeTuple, emptyDenylist, noNodes));
         }
 
         // Mark all the nodes dead for a few test cases
         {
             final AtomicLong time = new AtomicLong(0L);
             Supplier<Long> timeSupplier = time::get;
-            Map<HttpHost, DeadHostState> blacklist = new HashMap<>();
-            blacklist.put(n1.getHost(), new DeadHostState(timeSupplier));
-            blacklist.put(n2.getHost(), new DeadHostState(new DeadHostState(timeSupplier)));
-            blacklist.put(n3.getHost(), new DeadHostState(new DeadHostState(new DeadHostState(timeSupplier))));
+            Map<HttpHost, DeadHostState> denylist = new HashMap<>();
+            denylist.put(n1.getHost(), new DeadHostState(timeSupplier));
+            denylist.put(n2.getHost(), new DeadHostState(new DeadHostState(timeSupplier)));
+            denylist.put(n3.getHost(), new DeadHostState(new DeadHostState(new DeadHostState(timeSupplier))));
 
             /*
-             * case when fewer nodeTuple than blacklist, won't result in any IllegalCapacityException
+             * case when fewer nodeTuple than denylist, won't result in any IllegalCapacityException
              */
             {
                 NodeTuple<List<Node>> fewerNodeTuple = new NodeTuple<>(Arrays.asList(n1, n2), null);
-                assertSelectLivingHosts(Arrays.asList(n1), fewerNodeTuple, blacklist, NodeSelector.ANY);
-                assertSelectLivingHosts(Arrays.asList(n2), fewerNodeTuple, blacklist, not1);
+                assertSelectLivingHosts(Arrays.asList(n1), fewerNodeTuple, denylist, NodeSelector.ANY);
+                assertSelectLivingHosts(Arrays.asList(n2), fewerNodeTuple, denylist, not1);
             }
 
             /*
              * selectHosts will revive a single host regardless of
-             * blacklist time. It'll revive the node that is closest
+             * denylist time. It'll revive the node that is closest
              * to being revived that the NodeSelector is ok with.
              */
-            assertEquals(singletonList(n1), RestClient.selectNodes(nodeTuple, blacklist, new AtomicInteger(), NodeSelector.ANY));
-            assertEquals(singletonList(n2), RestClient.selectNodes(nodeTuple, blacklist, new AtomicInteger(), not1));
+            assertEquals(singletonList(n1), RestClient.selectNodes(nodeTuple, denylist, new AtomicInteger(), NodeSelector.ANY));
+            assertEquals(singletonList(n2), RestClient.selectNodes(nodeTuple, denylist, new AtomicInteger(), not1));
 
             /*
              * Try a NodeSelector that excludes all nodes. This should
              * return a failure, but a different failure than when the
-             * blacklist is empty so that the caller knows that all of
-             * their nodes are blacklisted AND blocked.
+             * denylist is empty so that the caller knows that all of
+             * their nodes are denylisted AND blocked.
              */
             String message = "NodeSelector [NONE] rejected all nodes, living [] and dead ["
                 + "[host=http://1, version=1], [host=http://2, version=2], "
                 + "[host=http://3, version=3]]";
-            assertEquals(message, assertSelectAllRejected(nodeTuple, blacklist, noNodes));
+            assertEquals(message, assertSelectAllRejected(nodeTuple, denylist, noNodes));
 
             /*
              * Now lets wind the clock forward, past the timeout for one of
              * the dead nodes. We should return it.
              */
             time.set(new DeadHostState(timeSupplier).getDeadUntilNanos());
-            assertSelectLivingHosts(Arrays.asList(n1), nodeTuple, blacklist, NodeSelector.ANY);
+            assertSelectLivingHosts(Arrays.asList(n1), nodeTuple, denylist, NodeSelector.ANY);
 
             /*
              * But if the NodeSelector rejects that node then we'll pick the
              * first on that the NodeSelector doesn't reject.
              */
-            assertSelectLivingHosts(Arrays.asList(n2), nodeTuple, blacklist, not1);
+            assertSelectLivingHosts(Arrays.asList(n2), nodeTuple, denylist, not1);
 
             /*
              * If we wind the clock way into the future, past any of the
-             * blacklist timeouts then we function as though the nodes aren't
-             * in the blacklist at all.
+             * denylist timeouts then we function as though the nodes aren't
+             * in the denylist at all.
              */
             time.addAndGet(DeadHostState.MAX_CONNECTION_TIMEOUT_NANOS);
-            assertSelectLivingHosts(Arrays.asList(n1, n2, n3), nodeTuple, blacklist, NodeSelector.ANY);
-            assertSelectLivingHosts(Arrays.asList(n2, n3), nodeTuple, blacklist, not1);
+            assertSelectLivingHosts(Arrays.asList(n1, n2, n3), nodeTuple, denylist, NodeSelector.ANY);
+            assertSelectLivingHosts(Arrays.asList(n2, n3), nodeTuple, denylist, not1);
         }
     }
 
     private void assertSelectLivingHosts(
         List<Node> expectedNodes,
         NodeTuple<List<Node>> nodeTuple,
-        Map<HttpHost, DeadHostState> blacklist,
+        Map<HttpHost, DeadHostState> denylist,
         NodeSelector nodeSelector
     ) throws IOException {
         int iterations = 1000;
         AtomicInteger lastNodeIndex = new AtomicInteger(0);
-        assertEquals(expectedNodes, RestClient.selectNodes(nodeTuple, blacklist, lastNodeIndex, nodeSelector));
+        assertEquals(expectedNodes, RestClient.selectNodes(nodeTuple, denylist, lastNodeIndex, nodeSelector));
         // Calling it again rotates the set of results
         for (int i = 1; i < iterations; i++) {
             Collections.rotate(expectedNodes, 1);
-            assertEquals("iteration " + i, expectedNodes, RestClient.selectNodes(nodeTuple, blacklist, lastNodeIndex, nodeSelector));
+            assertEquals("iteration " + i, expectedNodes, RestClient.selectNodes(nodeTuple, denylist, lastNodeIndex, nodeSelector));
         }
     }
 
@@ -360,11 +360,11 @@ private void assertSelectLivingHosts(
      */
     private static String assertSelectAllRejected(
         NodeTuple<List<Node>> nodeTuple,
-        Map<HttpHost, DeadHostState> blacklist,
+        Map<HttpHost, DeadHostState> denylist,
         NodeSelector nodeSelector
     ) {
         try {
-            RestClient.selectNodes(nodeTuple, blacklist, new AtomicInteger(0), nodeSelector);
+            RestClient.selectNodes(nodeTuple, denylist, new AtomicInteger(0), nodeSelector);
             throw new AssertionError("expected selectHosts to fail");
         } catch (IOException e) {
             return e.getMessage();

libs/secure-sm/src/main/java/org/opensearch/secure_sm/SecureSM.java

@@ -54,7 +54,7 @@
  *       a thread must have {@code modifyThread} to even terminate its own pool, leaving
  *       system threads unprotected.
  * </ul>
- * This class throws exception on {@code exitVM} calls, and provides a whitelist where calls
+ * This class throws exception on {@code exitVM} calls, and provides an allowlist where calls
  * from exit are allowed.
  * <p>
  * Additionally it enforces threadgroup security with the following rules:

modules/analysis-common/src/main/java/org/opensearch/analysis/common/AnalysisPainlessExtension.java

@@ -43,13 +43,13 @@
 
 public class AnalysisPainlessExtension implements PainlessExtension {
 
-    private static final Whitelist WHITELIST = WhitelistLoader.loadFromResourceFiles(
+    private static final Whitelist ALLOWLIST = WhitelistLoader.loadFromResourceFiles(
         AnalysisPainlessExtension.class,
         "painless_whitelist.txt"
     );
 
     @Override
     public Map<ScriptContext<?>, List<Whitelist>> getContextWhitelists() {
-        return Collections.singletonMap(AnalysisPredicateScript.CONTEXT, Collections.singletonList(WHITELIST));
+        return Collections.singletonMap(AnalysisPredicateScript.CONTEXT, Collections.singletonList(ALLOWLIST));
     }
 }

modules/ingest-common/src/main/java/org/opensearch/ingest/common/ProcessorsWhitelistExtension.java

@@ -44,13 +44,13 @@
 
 public class ProcessorsWhitelistExtension implements PainlessExtension {
 
-    private static final Whitelist WHITELIST = WhitelistLoader.loadFromResourceFiles(
+    private static final Whitelist ALLOWLIST = WhitelistLoader.loadFromResourceFiles(
         ProcessorsWhitelistExtension.class,
         "processors_whitelist.txt"
     );
 
     @Override
     public Map<ScriptContext<?>, List<Whitelist>> getContextWhitelists() {
-        return Collections.singletonMap(IngestScript.CONTEXT, Collections.singletonList(WHITELIST));
+        return Collections.singletonMap(IngestScript.CONTEXT, Collections.singletonList(ALLOWLIST));
     }
 }

modules/ingest-common/src/main/resources/org/opensearch/ingest/common/processors_whitelist.txt

@@ -17,7 +17,7 @@
 # under the License.
 #
 
-# This file contains a whitelist of static processor methods that can be accessed from painless
+# This file contains a allowlist of static processor methods that can be accessed from painless
 
 class org.opensearch.ingest.common.Processors {
   long bytes(String)