import quincy 17.2.0

[ceph.git] / ceph / src / arrow / java / flight / flight-core / src / main / java / org / apache / arrow / flight / example / ExampleFlightServer.java

diff --git a/ceph/src/arrow/java/flight/flight-core/src/main/java/org/apache/arrow/flight/example/ExampleFlightServer.java b/ceph/src/arrow/java/flight/flight-core/src/main/java/org/apache/arrow/flight/example/ExampleFlightServer.java
new file mode 100644 (file)
index 0000000..528c227
--- /dev/null
+++ b/ceph/src/arrow/java/flight/flight-core/src/main/java/org/apache/arrow/flight/example/ExampleFlightServer.java
@@ -0,0 +1,93 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.arrow.flight.example;
+
+import java.io.IOException;
+
+import org.apache.arrow.flight.FlightServer;
+import org.apache.arrow.flight.Location;
+import org.apache.arrow.memory.BufferAllocator;
+import org.apache.arrow.memory.RootAllocator;
+import org.apache.arrow.util.AutoCloseables;
+
+/**
+ * An Example Flight Server that provides access to the InMemoryStore. Used for integration testing.
+ */
+public class ExampleFlightServer implements AutoCloseable {
+
+  private static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(ExampleFlightServer.class);
+
+  private final FlightServer flightServer;
+  private final Location location;
+  private final BufferAllocator allocator;
+  private final InMemoryStore mem;
+
+  /**
+   * Constructs a new instance using Allocator for allocating buffer storage that binds
+   * to the given location.
+   */
+  public ExampleFlightServer(BufferAllocator allocator, Location location) {
+    this.allocator = allocator.newChildAllocator("flight-server", 0, Long.MAX_VALUE);
+    this.location = location;
+    this.mem = new InMemoryStore(this.allocator, location);
+    this.flightServer = FlightServer.builder(allocator, location, mem).build();
+  }
+
+  public Location getLocation() {
+    return location;
+  }
+
+  public int getPort() {
+    return this.flightServer.getPort();
+  }
+
+  public void start() throws IOException {
+    flightServer.start();
+  }
+
+  public void awaitTermination() throws InterruptedException {
+    flightServer.awaitTermination();
+  }
+
+  public InMemoryStore getStore() {
+    return mem;
+  }
+
+  @Override
+  public void close() throws Exception {
+    AutoCloseables.close(mem, flightServer, allocator);
+  }
+
+  /**
+   *  Main method starts the server listening to localhost:12233.
+   */
+  public static void main(String[] args) throws Exception {
+    final BufferAllocator a = new RootAllocator(Long.MAX_VALUE);
+    final ExampleFlightServer efs = new ExampleFlightServer(a, Location.forGrpcInsecure("localhost", 12233));
+    efs.start();
+    Runtime.getRuntime().addShutdownHook(new Thread(() -> {
+      try {
+        System.out.println("\nExiting...");
+        AutoCloseables.close(efs, a);
+      } catch (Exception e) {
+        e.printStackTrace();
+      }
+    }));
+    efs.awaitTermination();
+  }
+}