feat: bidirectional streaming source (#138)

numaproj · Sep 22, 2024 · 11e70d4 · 11e70d4
1 parent 8aa30e9
commit 11e70d4
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Showing 38 changed files with 465 additions and 259 deletions.
diff --git a/...ain/java/io/numaproj/numaflow/examples/mapstream/flatmapstream/FlatMapStreamFunction.java b/...ain/java/io/numaproj/numaflow/examples/mapstream/flatmapstream/FlatMapStreamFunction.java
@@ -1,6 +1,10 @@
 package io.numaproj.numaflow.examples.mapstream.flatmapstream;
 
-import io.numaproj.numaflow.mapstreamer.*;
+import io.numaproj.numaflow.mapstreamer.Datum;
+import io.numaproj.numaflow.mapstreamer.MapStreamer;
+import io.numaproj.numaflow.mapstreamer.Message;
+import io.numaproj.numaflow.mapstreamer.OutputObserver;
+import io.numaproj.numaflow.mapstreamer.Server;
 
 
 /**

diff --git a/examples/src/main/java/io/numaproj/numaflow/examples/source/simple/SimpleSource.java b/examples/src/main/java/io/numaproj/numaflow/examples/source/simple/SimpleSource.java
@@ -8,6 +8,7 @@
 import io.numaproj.numaflow.sourcer.ReadRequest;
 import io.numaproj.numaflow.sourcer.Server;
 import io.numaproj.numaflow.sourcer.Sourcer;
+import lombok.extern.slf4j.Slf4j;
 
 import java.time.Instant;
 import java.util.HashMap;
@@ -23,6 +24,7 @@
  * acknowledges them when ack is called.
  */
 
+@Slf4j
 public class SimpleSource extends Sourcer {
     private final Map<Long, Boolean> messages = new ConcurrentHashMap<>();
     private long readIndex = 0;
@@ -70,16 +72,15 @@ public void read(ReadRequest request, OutputObserver observer) {
 
     @Override
     public void ack(AckRequest request) {
+        Long offset = Longs.fromByteArray(request.getOffset().getValue());
         // remove the acknowledged messages from the map
-        for (Offset offset : request.getOffsets()) {
-            messages.remove(Longs.fromByteArray(offset.getValue()));
-        }
+        messages.remove(offset);
     }
 
     @Override
     public long getPending() {
-        // pending messages will be zero for a simple source
-        return 0;
+        // number of messages not acknowledged yet
+        return messages.size();
     }
 
     @Override

diff --git a/examples/src/test/java/io/numaproj/numaflow/examples/server/ServerTest.java b/examples/src/test/java/io/numaproj/numaflow/examples/server/ServerTest.java
@@ -4,7 +4,6 @@
 import io.numaproj.numaflow.examples.map.flatmap.FlatMapFunction;
 import io.numaproj.numaflow.examples.reduce.sum.SumFactory;
 import io.numaproj.numaflow.examples.sink.simple.SimpleSink;
-import io.numaproj.numaflow.examples.source.simple.SimpleSource;
 import io.numaproj.numaflow.examples.sourcetransformer.eventtimefilter.EventTimeFilterFunction;
 import io.numaproj.numaflow.mapper.MapperTestKit;
 import io.numaproj.numaflow.mapper.Message;
@@ -14,7 +13,6 @@
 import io.numaproj.numaflow.sinker.Response;
 import io.numaproj.numaflow.sinker.ResponseList;
 import io.numaproj.numaflow.sinker.SinkerTestKit;
-import io.numaproj.numaflow.sourcer.SourcerTestKit;
 import io.numaproj.numaflow.sourcetransformer.SourceTransformerTestKit;
 import lombok.extern.slf4j.Slf4j;
 import org.junit.jupiter.api.Assertions;
@@ -23,7 +21,6 @@
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.TestMethodOrder;
 
-import java.time.Duration;
 import java.time.Instant;
 import java.util.ArrayList;
 import java.util.List;
@@ -202,41 +199,42 @@ public void testSinkServerInvocation() {
         // we can add the logic to verify if the messages were
         // successfully written to the sink(could be a file, database, etc.)
     }
-
-    @Test
-    @Order(5)
-    public void testSourceServerInvocation() {
-        SimpleSource simpleSource = new SimpleSource();
-
-        SourcerTestKit sourcerTestKit = new SourcerTestKit(simpleSource);
-        try {
-            sourcerTestKit.startServer();
-        } catch (Exception e) {
-            Assertions.fail("Failed to start server");
-        }
-
-        // create a client to send requests to the server
-        SourcerTestKit.Client sourcerClient = new SourcerTestKit.Client();
-        // create a test observer to receive messages from the server
-        SourcerTestKit.TestListBasedObserver testObserver = new SourcerTestKit.TestListBasedObserver();
-        // create a read request with count 10 and timeout 1 second
-        SourcerTestKit.TestReadRequest testReadRequest = SourcerTestKit.TestReadRequest.builder()
-                .count(10).timeout(Duration.ofSeconds(1)).build();
-
-        try {
-            sourcerClient.sendReadRequest(testReadRequest, testObserver);
-            Assertions.assertEquals(10, testObserver.getMessages().size());
-        } catch (Exception e) {
-            Assertions.fail("Failed to send request to server");
-        }
-
-        try {
-            sourcerClient.close();
-            sourcerTestKit.stopServer();
-        } catch (InterruptedException e) {
-            Assertions.fail("Failed to stop server");
-        }
-    }
+// FIXME: once tester kit changes are done for bidirectional streaming source
+//    @Ignore
+//    @Test
+//    @Order(5)
+//    public void testSourceServerInvocation() {
+//        SimpleSource simpleSource = new SimpleSource();
+//
+//        SourcerTestKit sourcerTestKit = new SourcerTestKit(simpleSource);
+//        try {
+//            sourcerTestKit.startServer();
+//        } catch (Exception e) {
+//            Assertions.fail("Failed to start server");
+//        }
+//
+//        // create a client to send requests to the server
+//        SourcerTestKit.Client sourcerClient = new SourcerTestKit.Client();
+//        // create a test observer to receive messages from the server
+//        SourcerTestKit.TestListBasedObserver testObserver = new SourcerTestKit.TestListBasedObserver();
+//        // create a read request with count 10 and timeout 1 second
+//        SourcerTestKit.TestReadRequest testReadRequest = SourcerTestKit.TestReadRequest.builder()
+//                .count(10).timeout(Duration.ofSeconds(1)).build();
+//
+//        try {
+//            sourcerClient.sendReadRequest(testReadRequest, testObserver);
+//            Assertions.assertEquals(10, testObserver.getMessages().size());
+//        } catch (Exception e) {
+//            Assertions.fail("Failed to send request to server");
+//        }
+//
+//        try {
+//            sourcerClient.close();
+//            sourcerTestKit.stopServer();
+//        } catch (InterruptedException e) {
+//            Assertions.fail("Failed to stop server");
+//        }
+//    }
 
     @Test
     @Order(6)

diff --git a/examples/src/test/java/io/numaproj/numaflow/examples/source/simple/SimpleSourceTest.java b/examples/src/test/java/io/numaproj/numaflow/examples/source/simple/SimpleSourceTest.java
@@ -38,9 +38,12 @@ public void test_ReadAndAck() {
         for (Message message : testObserver.getMessages()) {
             offsets.add(message.getOffset());
         }
-        SourcerTestKit.TestAckRequest ackRequest = SourcerTestKit.TestAckRequest.builder()
-                .offsets(offsets).build();
-        simpleSource.ack(ackRequest);
+
+        for (Offset offset : offsets) {
+            SourcerTestKit.TestAckRequest ackRequest = SourcerTestKit.TestAckRequest.builder()
+                    .offset(offset).build();
+            simpleSource.ack(ackRequest);
+        }
 
         // Try reading 6 more messages
         // Since the previous batch got acked, the data source should allow us to read more messages
@@ -54,9 +57,8 @@ public void test_ReadAndAck() {
     @Test
     public void testPending() {
         SimpleSource simpleSource = new SimpleSource();
-        // simple source getPending always returns 0.
+        // since we haven't read any messages, the pending should be 0
         Assertions.assertEquals(0, simpleSource.getPending());
     }
-
 }
 
diff --git a/src/main/java/io/numaproj/numaflow/batchmapper/BatchResponse.java b/src/main/java/io/numaproj/numaflow/batchmapper/BatchResponse.java
@@ -27,6 +27,7 @@ public BatchResponse(String id) {
      * Appends a Message to the batch.
      *
      * @param msg the Message to be added to the batch
+     *
      * @return the current BatchResponse instance for method chaining
      */
     public BatchResponse append(Message msg) {

diff --git a/src/main/java/io/numaproj/numaflow/batchmapper/BatchResponses.java b/src/main/java/io/numaproj/numaflow/batchmapper/BatchResponses.java
@@ -21,6 +21,7 @@ public BatchResponses() {
      * Appends a BatchResponse to the list of batchResponses.
      *
      * @param batchResponse the BatchResponse to be added
+     *
      * @return the current BatchResponses object
      */
     public BatchResponses append(BatchResponse batchResponse) {

diff --git a/src/main/java/io/numaproj/numaflow/batchmapper/Service.java b/src/main/java/io/numaproj/numaflow/batchmapper/Service.java
@@ -63,7 +63,9 @@ public void onNext(Batchmap.BatchMapRequest mapRequest) {
             public void onError(Throwable throwable) {
                 // We close the stream and let the sender retry the messages
                 log.error("Error Encountered in batchMap Stream", throwable);
-                var status = Status.UNKNOWN.withDescription(throwable.getMessage()).withCause(throwable);
+                var status = Status.UNKNOWN
+                        .withDescription(throwable.getMessage())
+                        .withCause(throwable);
                 responseObserver.onError(status.asException());
             }
 
@@ -79,7 +81,10 @@ public void onCompleted() {
                             datumStream.getCount());
                     // Crash if the number of responses from the users don't match the input requests ignoring the EOF message
                     if (responses.getItems().size() != datumStream.getCount() - 1) {
-                        throw new RuntimeException("Number of results did not match expected " + (datumStream.getCount()-1) + " but got " + responses.getItems().size());
+                        throw new RuntimeException("Number of results did not match expected " + (
+                                datumStream.getCount() - 1) + " but got " + responses
+                                .getItems()
+                                .size());
                     }
                     buildAndStreamResponse(responses, responseObserver);
                 } catch (Exception e) {
@@ -90,7 +95,9 @@ public void onCompleted() {
         };
     }
 
-    private void buildAndStreamResponse(BatchResponses responses, StreamObserver<Batchmap.BatchMapResponse> responseObserver) {
+    private void buildAndStreamResponse(
+            BatchResponses responses,
+            StreamObserver<Batchmap.BatchMapResponse> responseObserver) {
         responses.getItems().forEach(message -> {
             List<Batchmap.BatchMapResponse.Result> batchMapResponseResult = new ArrayList<>();
             message.getItems().forEach(res -> {

diff --git a/src/main/java/io/numaproj/numaflow/mapper/GRPCConfig.java b/src/main/java/io/numaproj/numaflow/mapper/GRPCConfig.java
@@ -30,7 +30,8 @@ static GRPCConfig defaultGrpcConfig() {
         return GRPCConfig.newBuilder()
                 .infoFilePath(Constants.DEFAULT_SERVER_INFO_FILE_PATH)
                 .maxMessageSize(Constants.DEFAULT_MESSAGE_SIZE)
-                .isLocal(System.getenv("NUMAFLOW_POD") == null) // if NUMAFLOW_POD is not set, then we are not running using numaflow
+                .isLocal(System.getenv("NUMAFLOW_POD")
+                        == null) // if NUMAFLOW_POD is not set, then we are not running using numaflow
                 .socketPath(Constants.DEFAULT_SOCKET_PATH).build();
     }
 }
diff --git a/src/main/java/io/numaproj/numaflow/mapper/Server.java b/src/main/java/io/numaproj/numaflow/mapper/Server.java
@@ -78,7 +78,8 @@ public void start() throws Exception {
 
         log.info(
                 "Server started, listening on {}",
-                grpcConfig.isLocal() ? "localhost:" + grpcConfig.getPort() : grpcConfig.getSocketPath());
+                grpcConfig.isLocal() ?
+                        "localhost:" + grpcConfig.getPort() : grpcConfig.getSocketPath());
 
         // register shutdown hook
         Runtime.getRuntime().addShutdownHook(new Thread(() -> {

diff --git a/src/main/java/io/numaproj/numaflow/mapstreamer/GRPCConfig.java b/src/main/java/io/numaproj/numaflow/mapstreamer/GRPCConfig.java
@@ -30,7 +30,8 @@ static GRPCConfig defaultGrpcConfig() {
         return GRPCConfig.newBuilder()
                 .infoFilePath(Constants.DEFAULT_SERVER_INFO_FILE_PATH)
                 .maxMessageSize(Constants.DEFAULT_MESSAGE_SIZE)
-                .isLocal(System.getenv("NUMAFLOW_POD") == null) // if NUMAFLOW_POD is not set, then we are not running using numaflow
+                .isLocal(System.getenv("NUMAFLOW_POD")
+                        == null) // if NUMAFLOW_POD is not set, then we are not running using numaflow
                 .socketPath(Constants.DEFAULT_SOCKET_PATH).build();
     }
 }
diff --git a/src/main/java/io/numaproj/numaflow/reducer/GRPCConfig.java b/src/main/java/io/numaproj/numaflow/reducer/GRPCConfig.java
@@ -30,7 +30,8 @@ static GRPCConfig defaultGrpcConfig() {
         return GRPCConfig.newBuilder()
                 .infoFilePath(Constants.DEFAULT_SERVER_INFO_FILE_PATH)
                 .maxMessageSize(Constants.DEFAULT_MESSAGE_SIZE)
-                .isLocal(System.getenv("NUMAFLOW_POD") == null) // if NUMAFLOW_POD is not set, then we are not running using numaflow
+                .isLocal(System.getenv("NUMAFLOW_POD")
+                        == null) // if NUMAFLOW_POD is not set, then we are not running using numaflow
                 .socketPath(Constants.DEFAULT_SOCKET_PATH).build();
     }
 }
diff --git a/src/main/java/io/numaproj/numaflow/reducer/Server.java b/src/main/java/io/numaproj/numaflow/reducer/Server.java
@@ -73,7 +73,8 @@ public void start() throws Exception {
 
         log.info(
                 "Server started, listening on {}",
-                grpcConfig.isLocal() ? "localhost:" + grpcConfig.getPort() : grpcConfig.getSocketPath());
+                grpcConfig.isLocal() ?
+                        "localhost:" + grpcConfig.getPort() : grpcConfig.getSocketPath());
 
         // register shutdown hook
         Runtime.getRuntime().addShutdownHook(new Thread(() -> {

diff --git a/src/main/java/io/numaproj/numaflow/reducestreamer/GRPCConfig.java b/src/main/java/io/numaproj/numaflow/reducestreamer/GRPCConfig.java
@@ -29,7 +29,8 @@ static GRPCConfig defaultGrpcConfig() {
         return GRPCConfig.newBuilder()
                 .infoFilePath(Constants.DEFAULT_SERVER_INFO_FILE_PATH)
                 .maxMessageSize(Constants.DEFAULT_MESSAGE_SIZE)
-                .isLocal(System.getenv("NUMAFLOW_POD") == null) // if NUMAFLOW_POD is not set, then we are not running using numaflow
+                .isLocal(System.getenv("NUMAFLOW_POD")
+                        == null) // if NUMAFLOW_POD is not set, then we are not running using numaflow
                 .socketPath(Constants.DEFAULT_SOCKET_PATH).build();
     }
 }
diff --git a/src/main/java/io/numaproj/numaflow/reducestreamer/Server.java b/src/main/java/io/numaproj/numaflow/reducestreamer/Server.java
@@ -76,7 +76,8 @@ public void start() throws Exception {
 
         log.info(
                 "Server started, listening on {}",
-                grpcConfig.isLocal() ? "localhost:" + grpcConfig.getPort() : grpcConfig.getSocketPath());
+                grpcConfig.isLocal() ?
+                        "localhost:" + grpcConfig.getPort() : grpcConfig.getSocketPath());
 
         // register shutdown hook
         Runtime.getRuntime().addShutdownHook(new Thread(() -> {

diff --git a/src/main/java/io/numaproj/numaflow/sessionreducer/GRPCConfig.java b/src/main/java/io/numaproj/numaflow/sessionreducer/GRPCConfig.java
@@ -30,7 +30,8 @@ static GRPCConfig defaultGrpcConfig() {
         return GRPCConfig.newBuilder()
                 .infoFilePath(Constants.DEFAULT_SERVER_INFO_FILE_PATH)
                 .maxMessageSize(Constants.DEFAULT_MESSAGE_SIZE)
-                .isLocal(System.getenv("NUMAFLOW_POD") == null) // if NUMAFLOW_POD is not set, then we are not running using numaflow
+                .isLocal(System.getenv("NUMAFLOW_POD")
+                        == null) // if NUMAFLOW_POD is not set, then we are not running using numaflow
                 .socketPath(Constants.DEFAULT_SOCKET_PATH).build();
     }
 }
diff --git a/src/main/java/io/numaproj/numaflow/sessionreducer/Server.java b/src/main/java/io/numaproj/numaflow/sessionreducer/Server.java
@@ -76,7 +76,8 @@ public void start() throws Exception {
 
         log.info(
                 "Server started, listening on {}",
-                grpcConfig.isLocal() ? "localhost:" + grpcConfig.getPort() : grpcConfig.getSocketPath());
+                grpcConfig.isLocal() ?
+                        "localhost:" + grpcConfig.getPort() : grpcConfig.getSocketPath());
 
         // register shutdown hook
         Runtime.getRuntime().addShutdownHook(new Thread(() -> {

diff --git a/src/main/java/io/numaproj/numaflow/sessionreducer/SessionReducerActor.java b/src/main/java/io/numaproj/numaflow/sessionreducer/SessionReducerActor.java
@@ -15,9 +15,9 @@
  */
 class SessionReducerActor extends AbstractActor {
     private final SessionReducer sessionReducer;
+    private final OutputStreamObserver outputStream;
     // the session window the actor is working on
     private Sessionreduce.KeyedWindow keyedWindow;
-    private final OutputStreamObserver outputStream;
     // when set to true, it means this session is already closed.
     private boolean isClosed = false;
 

diff --git a/src/main/java/io/numaproj/numaflow/sideinput/Constants.java b/src/main/java/io/numaproj/numaflow/sideinput/Constants.java
@@ -5,9 +5,7 @@ public class Constants {
     static final String DEFAULT_SOCKET_PATH = "/var/run/numaflow/sideinput.sock";
 
     static final String DEFAULT_SERVER_INFO_FILE_PATH = "/var/run/numaflow/sideinput-server-info";
+    static final String DEFAULT_HOST = "localhost";
     static int DEFAULT_MESSAGE_SIZE = 1024 * 1024 * 64;
-
     static int DEFAULT_PORT = 50051;
-
-    static final String DEFAULT_HOST = "localhost";
 }
diff --git a/src/main/java/io/numaproj/numaflow/sideinput/GRPCConfig.java b/src/main/java/io/numaproj/numaflow/sideinput/GRPCConfig.java
@@ -30,7 +30,8 @@ static GRPCConfig defaultGrpcConfig() {
         return GRPCConfig.newBuilder()
                 .infoFilePath(Constants.DEFAULT_SERVER_INFO_FILE_PATH)
                 .maxMessageSize(Constants.DEFAULT_MESSAGE_SIZE)
-                .isLocal(System.getenv("NUMAFLOW_POD") == null) // if NUMAFLOW_POD is not set, then we are not running using numaflow
+                .isLocal(System.getenv("NUMAFLOW_POD")
+                        == null) // if NUMAFLOW_POD is not set, then we are not running using numaflow
                 .socketPath(Constants.DEFAULT_SOCKET_PATH).build();
     }
 }
diff --git a/src/main/java/io/numaproj/numaflow/sideinput/Server.java b/src/main/java/io/numaproj/numaflow/sideinput/Server.java
@@ -73,7 +73,8 @@ public void start() throws Exception {
 
         log.info(
                 "Server started, listening on {}",
-                grpcConfig.isLocal() ? "localhost:" + grpcConfig.getPort() : grpcConfig.getSocketPath());
+                grpcConfig.isLocal() ?
+                        "localhost:" + grpcConfig.getPort() : grpcConfig.getSocketPath());
 
         // register shutdown hook
         Runtime.getRuntime().addShutdownHook(new Thread(() -> {

diff --git a/src/main/java/io/numaproj/numaflow/sinker/GRPCConfig.java b/src/main/java/io/numaproj/numaflow/sinker/GRPCConfig.java
@@ -39,7 +39,8 @@ static GRPCConfig defaultGrpcConfig() {
         return GRPCConfig.newBuilder()
                 .infoFilePath(infoFilePath)
                 .maxMessageSize(Constants.DEFAULT_MESSAGE_SIZE)
-                .isLocal(containerType == null) // if ENV_UD_CONTAINER_TYPE is not set, then we are not running using numaflow
+                .isLocal(containerType
+                        == null) // if ENV_UD_CONTAINER_TYPE is not set, then we are not running using numaflow
                 .socketPath(socketPath)
                 .build();
     }

diff --git a/src/main/java/io/numaproj/numaflow/sinker/Server.java b/src/main/java/io/numaproj/numaflow/sinker/Server.java
@@ -72,7 +72,8 @@ public void start() throws Exception {
 
         log.info(
                 "Server started, listening on {}",
-                grpcConfig.isLocal() ? "localhost:" + grpcConfig.getPort() : grpcConfig.getSocketPath());
+                grpcConfig.isLocal() ?
+                        "localhost:" + grpcConfig.getPort() : grpcConfig.getSocketPath());
 
         // register shutdown hook
         Runtime.getRuntime().addShutdownHook(new Thread(() -> {

diff --git a/src/main/java/io/numaproj/numaflow/sinker/SinkerTestKit.java b/src/main/java/io/numaproj/numaflow/sinker/SinkerTestKit.java
@@ -165,7 +165,8 @@ public void onCompleted() {
                                 .build() : Timestamp.newBuilder()
                                 .setSeconds(datum.getWatermark().getEpochSecond())
                                 .setNanos(datum.getWatermark().getNano()).build())
-                        .putAllHeaders(datum.getHeaders() == null ? new HashMap<>() : datum.getHeaders())
+                        .putAllHeaders(
+                                datum.getHeaders() == null ? new HashMap<>() : datum.getHeaders())
                         .build();
                 requestObserver.onNext(request);
             }