Added rest layer changes for List all PITs and PIT segments (#4388)

* Changes for list all and pit segments Signed-off-by: Bharathwaj G <[email protected]> (cherry picked from commit bb47419)
opensearch-project · Sep 27, 2022 · 2b793dc · 2b793dc
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -6,6 +6,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - Github workflow for changelog verification ([#4085](https://github.com/opensearch-project/OpenSearch/pull/4085))
 - Point in time rest layer changes for create and delete PIT API ([#4064](https://github.com/opensearch-project/OpenSearch/pull/4064))
 - Add failover support with Segment Replication enabled. ([#4325](https://github.com/opensearch-project/OpenSearch/pull/4325)
+- Point in time rest layer changes for list PIT and PIT segments API ([#4388](https://github.com/opensearch-project/OpenSearch/pull/4388))
 - Added @dreamer-89 as an Opensearch maintainer ([#4342](https://github.com/opensearch-project/OpenSearch/pull/4342))
 - Added release notes for 1.3.5 ([#4343](https://github.com/opensearch-project/OpenSearch/pull/4343))
 - Added release notes for 2.2.1 ([#4344](https://github.com/opensearch-project/OpenSearch/pull/4344))

diff --git a/client/rest-high-level/src/main/java/org/opensearch/client/RequestConverters.java b/client/rest-high-level/src/main/java/org/opensearch/client/RequestConverters.java
@@ -498,6 +498,10 @@ static Request deleteAllPits() {
         return new Request(HttpDelete.METHOD_NAME, "/_search/point_in_time/_all");
     }
 
+    static Request getAllPits() {
+        return new Request(HttpGet.METHOD_NAME, "/_search/point_in_time/_all");
+    }
+
     static Request multiSearch(MultiSearchRequest multiSearchRequest) throws IOException {
         Request request = new Request(HttpPost.METHOD_NAME, "/_msearch");
 

diff --git a/client/rest-high-level/src/main/java/org/opensearch/client/RestHighLevelClient.java b/client/rest-high-level/src/main/java/org/opensearch/client/RestHighLevelClient.java
@@ -63,6 +63,7 @@
 import org.opensearch.action.search.CreatePitResponse;
 import org.opensearch.action.search.DeletePitRequest;
 import org.opensearch.action.search.DeletePitResponse;
+import org.opensearch.action.search.GetAllPitNodesResponse;
 import org.opensearch.action.search.MultiSearchRequest;
 import org.opensearch.action.search.MultiSearchResponse;
 import org.opensearch.action.search.SearchRequest;
@@ -1368,6 +1369,40 @@ public final Cancellable deleteAllPitsAsync(RequestOptions options, ActionListen
         );
     }
 
+    /**
+     * Get all point in time searches using list all PITs API
+     *
+     * @param options the request options (e.g. headers), use {@link RequestOptions#DEFAULT} if nothing needs to be customized
+     * @return the response
+     */
+    public final GetAllPitNodesResponse getAllPits(RequestOptions options) throws IOException {
+        return performRequestAndParseEntity(
+            new MainRequest(),
+            (request) -> RequestConverters.getAllPits(),
+            options,
+            GetAllPitNodesResponse::fromXContent,
+            emptySet()
+        );
+    }
+
+    /**
+     * Asynchronously get all point in time searches using list all PITs API
+     *
+     * @param options the request options (e.g. headers), use {@link RequestOptions#DEFAULT} if nothing needs to be customized
+     * @param listener the listener to be notified upon request completion
+     * @return the response
+     */
+    public final Cancellable getAllPitsAsync(RequestOptions options, ActionListener<GetAllPitNodesResponse> listener) {
+        return performRequestAsyncAndParseEntity(
+            new MainRequest(),
+            (request) -> RequestConverters.getAllPits(),
+            options,
+            GetAllPitNodesResponse::fromXContent,
+            listener,
+            emptySet()
+        );
+    }
+
     /**
      * Clears one or more scroll ids using the Clear Scroll API.
      *

diff --git a/client/rest-high-level/src/test/java/org/opensearch/client/PitIT.java b/client/rest-high-level/src/test/java/org/opensearch/client/PitIT.java
@@ -18,12 +18,14 @@
 import org.opensearch.action.search.DeletePitInfo;
 import org.opensearch.action.search.DeletePitRequest;
 import org.opensearch.action.search.DeletePitResponse;
+import org.opensearch.action.search.GetAllPitNodesResponse;
 import org.opensearch.common.unit.TimeValue;
 
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.concurrent.TimeUnit;
+import java.util.stream.Collectors;
 
 /**
  * Tests point in time API with rest high level client
@@ -52,21 +54,24 @@ public void indexDocuments() throws IOException {
 
     public void testCreateAndDeletePit() throws IOException {
         CreatePitRequest pitRequest = new CreatePitRequest(new TimeValue(1, TimeUnit.DAYS), true, "index");
-        CreatePitResponse pitResponse = execute(pitRequest, highLevelClient()::createPit, highLevelClient()::createPitAsync);
-        assertTrue(pitResponse.getId() != null);
-        assertEquals(1, pitResponse.getTotalShards());
-        assertEquals(1, pitResponse.getSuccessfulShards());
-        assertEquals(0, pitResponse.getFailedShards());
-        assertEquals(0, pitResponse.getSkippedShards());
+        CreatePitResponse createPitResponse = execute(pitRequest, highLevelClient()::createPit, highLevelClient()::createPitAsync);
+        assertTrue(createPitResponse.getId() != null);
+        assertEquals(1, createPitResponse.getTotalShards());
+        assertEquals(1, createPitResponse.getSuccessfulShards());
+        assertEquals(0, createPitResponse.getFailedShards());
+        assertEquals(0, createPitResponse.getSkippedShards());
+        GetAllPitNodesResponse getAllPitResponse = highLevelClient().getAllPits(RequestOptions.DEFAULT);
+        List<String> pits = getAllPitResponse.getPitInfos().stream().map(r -> r.getPitId()).collect(Collectors.toList());
+        assertTrue(pits.contains(createPitResponse.getId()));
         List<String> pitIds = new ArrayList<>();
-        pitIds.add(pitResponse.getId());
+        pitIds.add(createPitResponse.getId());
         DeletePitRequest deletePitRequest = new DeletePitRequest(pitIds);
         DeletePitResponse deletePitResponse = execute(deletePitRequest, highLevelClient()::deletePit, highLevelClient()::deletePitAsync);
         assertTrue(deletePitResponse.getDeletePitResults().get(0).isSuccessful());
-        assertTrue(deletePitResponse.getDeletePitResults().get(0).getPitId().equals(pitResponse.getId()));
+        assertTrue(deletePitResponse.getDeletePitResults().get(0).getPitId().equals(createPitResponse.getId()));
     }
 
-    public void testDeleteAllPits() throws IOException {
+    public void testDeleteAllAndListAllPits() throws IOException {
         CreatePitRequest pitRequest = new CreatePitRequest(new TimeValue(1, TimeUnit.DAYS), true, "index");
         CreatePitResponse pitResponse = execute(pitRequest, highLevelClient()::createPit, highLevelClient()::createPitAsync);
         CreatePitResponse pitResponse1 = execute(pitRequest, highLevelClient()::createPit, highLevelClient()::createPitAsync);
@@ -80,6 +85,11 @@ public void testDeleteAllPits() throws IOException {
         pitResponse1 = execute(pitRequest, highLevelClient()::createPit, highLevelClient()::createPitAsync);
         assertTrue(pitResponse.getId() != null);
         assertTrue(pitResponse1.getId() != null);
+        GetAllPitNodesResponse getAllPitResponse = highLevelClient().getAllPits(RequestOptions.DEFAULT);
+
+        List<String> pits = getAllPitResponse.getPitInfos().stream().map(r -> r.getPitId()).collect(Collectors.toList());
+        assertTrue(pits.contains(pitResponse.getId()));
+        assertTrue(pits.contains(pitResponse1.getId()));
         ActionListener<DeletePitResponse> deletePitListener = new ActionListener<>() {
             @Override
             public void onResponse(DeletePitResponse response) {
@@ -95,8 +105,27 @@ public void onFailure(Exception e) {
                 }
             }
         };
+        final CreatePitResponse pitResponse3 = execute(pitRequest, highLevelClient()::createPit, highLevelClient()::createPitAsync);
+
+        ActionListener<GetAllPitNodesResponse> getPitsListener = new ActionListener<GetAllPitNodesResponse>() {
+            @Override
+            public void onResponse(GetAllPitNodesResponse response) {
+                List<String> pits = response.getPitInfos().stream().map(r -> r.getPitId()).collect(Collectors.toList());
+                assertTrue(pits.contains(pitResponse3.getId()));
+            }
+
+            @Override
+            public void onFailure(Exception e) {
+                if (!(e instanceof OpenSearchStatusException)) {
+                    throw new AssertionError("List all PITs failed", e);
+                }
+            }
+        };
+        highLevelClient().getAllPitsAsync(RequestOptions.DEFAULT, getPitsListener);
         highLevelClient().deleteAllPitsAsync(RequestOptions.DEFAULT, deletePitListener);
         // validate no pits case
+        getAllPitResponse = highLevelClient().getAllPits(RequestOptions.DEFAULT);
+        assertTrue(getAllPitResponse.getPitInfos().size() == 0);
         highLevelClient().deleteAllPitsAsync(RequestOptions.DEFAULT, deletePitListener);
     }
 }
diff --git a/client/rest-high-level/src/test/java/org/opensearch/client/RestHighLevelClientTests.java b/client/rest-high-level/src/test/java/org/opensearch/client/RestHighLevelClientTests.java
@@ -135,6 +135,7 @@ public class RestHighLevelClientTests extends OpenSearchTestCase {
         "ping",
         "info",
         "delete_all_pits",
+        "get_all_pits",
         // security
         "security.get_ssl_certificates",
         "security.authenticate",

diff --git a/rest-api-spec/src/main/resources/rest-api-spec/api/get_all_pits.json b/rest-api-spec/src/main/resources/rest-api-spec/api/get_all_pits.json
@@ -0,0 +1,19 @@
+{
+  "get_all_pits":{
+    "documentation":{
+      "url":"https://opensearch.org/docs/latest/opensearch/rest-api/point_in_time/",
+      "description":"Lists all active point in time searches."
+    },
+    "stability":"stable",
+    "url":{
+      "paths":[
+        {
+          "path":"/_search/point_in_time/_all",
+          "methods":[
+            "GET"
+          ]
+        }
+      ]
+    }
+  }
+}
diff --git a/rest-api-spec/src/main/resources/rest-api-spec/test/cat.shards/10_basic.yml b/rest-api-spec/src/main/resources/rest-api-spec/test/cat.shards/10_basic.yml
@@ -1,14 +1,14 @@
 ---
 "Help":
   - skip:
-      version: " - 2.2.99"
-      reason:  point in time stats were added in 2.3.0
+      version: " - 2.3.99"
+      reason:  point in time stats were added in 2.4.0
       features: node_selector
   - do:
       cat.shards:
         help: true
       node_selector:
-        version: "2.3.0 - "
+        version: "2.4.0 - "
 
   - match:
       $body: |
@@ -90,14 +90,14 @@
 ---
 "Help before - 2.3.0":
   - skip:
-      version: "2.3.0 - "
-      reason:  point in time stats were added in 2.3.0
+      version: "2.4.0 - "
+      reason:  point in time stats were added in 2.4.0
       features: node_selector
   - do:
       cat.shards:
         help: true
       node_selector:
-        version: " - 2.2.99"
+        version: " - 2.3.99"
 
   - match:
       $body: |

diff --git a/rest-api-spec/src/main/resources/rest-api-spec/test/pit/10_basic.yml b/rest-api-spec/src/main/resources/rest-api-spec/test/pit/10_basic.yml
@@ -1,7 +1,7 @@
 "Create PIT, Search with PIT ID and Delete":
   - skip:
-      version: " - 2.2.99"
-      reason: "mode to be introduced later than 2.3"
+      version: " - 2.3.99"
+      reason: "mode to be introduced later than 2.4"
   - do:
       indices.create:
         index: test_pit
@@ -79,6 +79,12 @@
   - match: {hits.total:      3    }
   - length: {hits.hits:      1    }
 
+  - do:
+      get_all_pits: {}
+
+  - match: {pits.0.pit_id: $pit_id}
+  - match: {pits.0.keep_alive: 82800000 }
+
   - do:
       delete_pit:
         body:
@@ -90,8 +96,8 @@
 ---
 "Delete all":
   - skip:
-      version: " - 2.2.99"
-      reason: "mode to be introduced later than 2.3"
+      version: " - 2.3.99"
+      reason: "mode to be introduced later than 2.4"
   - do:
       indices.create:
         index: test_pit
@@ -119,6 +125,12 @@
   - set: {pit_id: pit_id}
   - match:   { _shards.failed: 0}
 
+  - do:
+      get_all_pits: {}
+
+  - match: {pits.0.pit_id: $pit_id}
+  - match: {pits.0.keep_alive: 82800000 }
+
   - do:
       delete_all_pits: {}
 

diff --git a/server/src/main/java/org/opensearch/action/ActionModule.java b/server/src/main/java/org/opensearch/action/ActionModule.java
@@ -238,16 +238,14 @@
 import org.opensearch.action.search.ClearScrollAction;
 import org.opensearch.action.search.CreatePitAction;
 import org.opensearch.action.search.DeletePitAction;
-import org.opensearch.action.search.GetAllPitsAction;
 import org.opensearch.action.search.MultiSearchAction;
-import org.opensearch.action.search.NodesGetAllPitsAction;
+import org.opensearch.action.search.GetAllPitsAction;
 import org.opensearch.action.search.SearchAction;
 import org.opensearch.action.search.SearchScrollAction;
 import org.opensearch.action.search.TransportClearScrollAction;
 import org.opensearch.action.search.TransportCreatePitAction;
 import org.opensearch.action.search.TransportDeletePitAction;
 import org.opensearch.action.search.TransportGetAllPitsAction;
-import org.opensearch.action.search.TransportNodesGetAllPitsAction;
 import org.opensearch.action.search.TransportMultiSearchAction;
 import org.opensearch.action.search.TransportSearchAction;
 import org.opensearch.action.search.TransportSearchScrollAction;
@@ -385,6 +383,7 @@
 import org.opensearch.rest.action.cat.RestClusterManagerAction;
 import org.opensearch.rest.action.cat.RestNodeAttrsAction;
 import org.opensearch.rest.action.cat.RestNodesAction;
+import org.opensearch.rest.action.cat.RestPitSegmentsAction;
 import org.opensearch.rest.action.cat.RestPluginsAction;
 import org.opensearch.rest.action.cat.RestRepositoriesAction;
 import org.opensearch.rest.action.cat.RestSegmentsAction;
@@ -413,6 +412,7 @@
 import org.opensearch.rest.action.search.RestCreatePitAction;
 import org.opensearch.rest.action.search.RestDeletePitAction;
 import org.opensearch.rest.action.search.RestExplainAction;
+import org.opensearch.rest.action.search.RestGetAllPitsAction;
 import org.opensearch.rest.action.search.RestMultiSearchAction;
 import org.opensearch.rest.action.search.RestSearchAction;
 import org.opensearch.rest.action.search.RestSearchScrollAction;
@@ -678,10 +678,9 @@ public <Request extends ActionRequest, Response extends ActionResponse> void reg
 
         // point in time actions
         actions.register(CreatePitAction.INSTANCE, TransportCreatePitAction.class);
-        actions.register(GetAllPitsAction.INSTANCE, TransportGetAllPitsAction.class);
         actions.register(DeletePitAction.INSTANCE, TransportDeletePitAction.class);
         actions.register(PitSegmentsAction.INSTANCE, TransportPitSegmentsAction.class);
-        actions.register(NodesGetAllPitsAction.INSTANCE, TransportNodesGetAllPitsAction.class);
+        actions.register(GetAllPitsAction.INSTANCE, TransportGetAllPitsAction.class);
 
         return unmodifiableMap(actions.getRegistry());
     }
@@ -858,6 +857,8 @@ public void initRestHandlers(Supplier<DiscoveryNodes> nodesInCluster) {
         // Point in time API
         registerHandler.accept(new RestCreatePitAction());
         registerHandler.accept(new RestDeletePitAction());
+        registerHandler.accept(new RestGetAllPitsAction(nodesInCluster));
+        registerHandler.accept(new RestPitSegmentsAction(nodesInCluster));
 
         for (ActionPlugin plugin : actionPlugins) {
             for (RestHandler handler : plugin.getRestHandlers(

diff --git a/server/src/main/java/org/opensearch/action/admin/indices/segments/PitSegmentsRequest.java b/server/src/main/java/org/opensearch/action/admin/indices/segments/PitSegmentsRequest.java
@@ -13,6 +13,7 @@
 import org.opensearch.common.Strings;
 import org.opensearch.common.io.stream.StreamInput;
 import org.opensearch.common.io.stream.StreamOutput;
+import org.opensearch.common.xcontent.XContentParser;
 
 import java.io.IOException;
 import java.util.ArrayList;
@@ -84,4 +85,37 @@ public ActionRequestValidationException validate() {
         }
         return validationException;
     }
+
+    public void fromXContent(XContentParser parser) throws IOException {
+        pitIds.clear();
+        if (parser.nextToken() != XContentParser.Token.START_OBJECT) {
+            throw new IllegalArgumentException("Malformed content, must start with an object");
+        } else {
+            XContentParser.Token token;
+            String currentFieldName = null;
+            while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
+                if (token == XContentParser.Token.FIELD_NAME) {
+                    currentFieldName = parser.currentName();
+                } else if ("pit_id".equals(currentFieldName)) {
+                    if (token == XContentParser.Token.START_ARRAY) {
+                        while ((token = parser.nextToken()) != XContentParser.Token.END_ARRAY) {
+                            if (token.isValue() == false) {
+                                throw new IllegalArgumentException("pit_id array element should only contain PIT identifier");
+                            }
+                            pitIds.add(parser.text());
+                        }
+                    } else {
+                        if (token.isValue() == false) {
+                            throw new IllegalArgumentException("pit_id element should only contain PIT identifier");
+                        }
+                        pitIds.add(parser.text());
+                    }
+                } else {
+                    throw new IllegalArgumentException(
+                        "Unknown parameter [" + currentFieldName + "] in request body or parameter is of the wrong type[" + token + "] "
+                    );
+                }
+            }
+        }
+    }
 }