Support Java bindings for Avro reader

java/src/main/java/ai/rapids/cudf/AvroOptions.java

@@ -0,0 +1,41 @@
+/*
+ *
+ *  Copyright (c) 2022, NVIDIA CORPORATION.
+ *
+ *  Licensed 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 ai.rapids.cudf;
+
+/**
+ * Options for reading an Avro file
+ */
+public class AvroOptions extends ColumnFilterOptions {
+
+    public static AvroOptions DEFAULT = new AvroOptions(new Builder());
+
+    private AvroOptions(Builder builder) {
+        super(builder);
+    }
+
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    public static class Builder extends ColumnFilterOptions.Builder<Builder> {
+        public AvroOptions build() {
+            return new AvroOptions(this);
+        }
+    }
+}

java/src/main/java/ai/rapids/cudf/Table.java

@@ -251,6 +251,17 @@ private static native long[] readJSON(String[] columnNames,
   private static native long[] readParquet(String[] filterColumnNames, String filePath,
                                            long address, long length, int timeUnit) throws CudfException;
 
+  /**
+   * Read in Avro formatted data.
+   * @param filterColumnNames  name of the columns to read, or an empty array if we want to read
+   *                           all of them
+   * @param filePath           the path of the file to read, or null if no path should be read.
+   * @param address            the address of the buffer to read from or 0 if we should not.
+   * @param length             the length of the buffer to read from.
+   */
+  private static native long[] readAvro(String[] filterColumnNames, String filePath,
+                                           long address, long length) throws CudfException;
+
   /**
    * Setup everything to write parquet formatted data to a file.
    * @param columnNames     names that correspond to the table columns
@@ -1020,6 +1031,85 @@ public static Table readParquet(ParquetOptions opts, HostMemoryBuffer buffer,
         null, buffer.getAddress() + offset, len, opts.timeUnit().typeId.getNativeId()));
   }
 
+
+
+  /**
+   * Read an Avro file using the default AvroOptions.
+   * @param path the local file to read.
+   * @return the file parsed as a table on the GPU.
+   */
+  public static Table readAvro(File path) {
+    return readAvro(AvroOptions.DEFAULT, path);
+  }
+
+  /**
+   * Read an Avro file.
+   * @param opts various Avro parsing options.
+   * @param path the local file to read.
+   * @return the file parsed as a table on the GPU.
+   */
+  public static Table readAvro(AvroOptions opts, File path) {
+    return new Table(readAvro(opts.getIncludeColumnNames(),
+            path.getAbsolutePath(), 0, 0));
+  }
+
+  /**
+   * Read Avro formatted data.
+   * @param buffer raw Avro formatted bytes.
+   * @return the data parsed as a table on the GPU.
+   */
+  public static Table readAvro(byte[] buffer) {
+    return readAvro(AvroOptions.DEFAULT, buffer, 0, buffer.length);
+  }
+
+  /**
+   * Read Avro formatted data.
+   * @param opts various Avro parsing options.
+   * @param buffer raw Avro formatted bytes.
+   * @return the data parsed as a table on the GPU.
+   */
+  public static Table readAvro(AvroOptions opts, byte[] buffer) {
+    return readAvro(opts, buffer, 0, buffer.length);
+  }
+
+  /**
+   * Read Avro formatted data.
+   * @param opts various Avro parsing options.
+   * @param buffer raw Avro formatted bytes.
+   * @param offset the starting offset into buffer.
+   * @param len the number of bytes to parse.
+   * @return the data parsed as a table on the GPU.
+   */
+  public static Table readAvro(AvroOptions opts, byte[] buffer, long offset, long len) {
+    assert offset >= 0 && offset < buffer.length;
+    assert len <= buffer.length - offset;
+    len = len > 0 ? len : buffer.length - offset;
+
+    try (HostMemoryBuffer newBuf = HostMemoryBuffer.allocate(len)) {
+      newBuf.setBytes(0, buffer, offset, len);
+      return readAvro(opts, newBuf, 0, len);
+    }
+  }
+
+  /**
+   * Read Avro formatted data.
+   * @param opts various Avro parsing options.
+   * @param buffer raw Avro formatted bytes.
+   * @param offset the starting offset into buffer.
+   * @param len the number of bytes to parse.
+   * @return the data parsed as a table on the GPU.
+   */
+  public static Table readAvro(AvroOptions opts, HostMemoryBuffer buffer,
+                                  long offset, long len) {
+    assert offset >= 0 && offset < buffer.length;
+    assert len <= buffer.length - offset;
+    len = len > 0 ? len : buffer.length - offset;
+
+    return new Table(readAvro(opts.getIncludeColumnNames(),
+            null, buffer.getAddress() + offset, len));
+  }
+
+
   /**
    * Read a ORC file using the default ORCOptions.
    * @param path the local file to read.

java/src/main/native/src/TableJni.cpp

@@ -28,6 +28,7 @@
 #include <cudf/io/csv.hpp>
 #include <cudf/io/data_sink.hpp>
 #include <cudf/io/json.hpp>
+#include <cudf/io/avro.hpp>
 #include <cudf/io/orc.hpp>
 #include <cudf/io/parquet.hpp>
 #include <cudf/join.hpp>
@@ -1496,6 +1497,43 @@ JNIEXPORT jlongArray JNICALL Java_ai_rapids_cudf_Table_readParquet(JNIEnv *env,
   CATCH_STD(env, NULL);
 }
 
+JNIEXPORT jlongArray JNICALL Java_ai_rapids_cudf_Table_readAvro(
+  JNIEnv *env, jclass, jobjectArray filter_col_names, jstring inputfilepath, jlong buffer, jlong buffer_length, jint unit) {
+
+  const bool read_buffer = (buffer != 0);
+  if (!read_buffer) {
+    JNI_NULL_CHECK(env, inputfilepath, "input file or buffer must be supplied", NULL);
+  } else if (inputfilepath != NULL) {
+    JNI_THROW_NEW(env, "java/lang/IllegalArgumentException",
+                  "cannot pass in both a buffer and an inputfilepath", NULL);
+  } else if (buffer_length <= 0) {
+    JNI_THROW_NEW(env, "java/lang/IllegalArgumentException", "An empty buffer is not supported",
+                  NULL);
+  }
+
+  try {
+    cudf::jni::auto_set_device(env);
+    cudf::jni::native_jstring filename(env, inputfilepath);
+    if (!read_buffer && filename.is_empty()) {
+      JNI_THROW_NEW(env, "java/lang/IllegalArgumentException", "inputfilepath can't be empty",
+                    NULL);
+    }
+
+    cudf::jni::native_jstringArray n_filter_col_names(env, filter_col_names);
+
+    auto source = read_buffer ? cudf::io::source_info(reinterpret_cast<char *>(buffer),
+                                                      static_cast<std::size_t>(buffer_length)) :
+                                cudf::io::source_info(filename.get());
+
+    cudf::io::avro_reader_options opts =
+        cudf::io::avro_reader_options::builder(source)
+            .columns(n_filter_col_names.as_cpp_vector())
+            .build();
+    return convert_table_for_return(env, cudf::io::read_avro(opts).tbl);
+  }
+  CATCH_STD(env, NULL);
+}
+
 JNIEXPORT long JNICALL Java_ai_rapids_cudf_Table_writeParquetBufferBegin(
     JNIEnv *env, jclass, jobjectArray j_col_names, jint j_num_children, jintArray j_children,
     jbooleanArray j_col_nullability, jobjectArray j_metadata_keys, jobjectArray j_metadata_values,

java/src/test/java/ai/rapids/cudf/TableTest.java

@@ -80,6 +80,7 @@ public class TableTest extends CudfTestBase {
   private static final File TEST_ORC_FILE = TestUtils.getResourceAsFile("TestOrcFile.orc");
   private static final File TEST_ORC_TIMESTAMP_DATE_FILE = TestUtils.getResourceAsFile("timestamp-date-test.orc");
   private static final File TEST_DECIMAL_PARQUET_FILE = TestUtils.getResourceAsFile("decimal.parquet");
+  private static final File TEST_ALL_TYPES_PLAIN_AVRO_FILE = TestUtils.getResourceAsFile("alltypes_plain.avro");
   private static final File TEST_SIMPLE_CSV_FILE = TestUtils.getResourceAsFile("simple.csv");
   private static final File TEST_SIMPLE_JSON_FILE = TestUtils.getResourceAsFile("people.json");
 
@@ -642,6 +643,67 @@ void testReadParquetContainsDecimalData() {
     }
   }
 
+  @Test
+  void testReadAvro() {
+    AvroOptions opts = AvroOptions.builder()
+            .includeColumn("bool_col")
+            .includeColumn("int_col")
+            .includeColumn("timestamp_col")
+            .build();
+
+    try (Table expected = new Table.TestBuilder()
+            .column(true, false, true, false, true, false, true, false)
+            .column(0, 1, 0, 1, 0, 1, 0, 1)
+            .column(1235865600000000L, 1235865660000000L, 1238544000000000L, 1238544060000000L,
+                    1233446400000000L, 1233446460000000L, 1230768000000000L, 1230768060000000L)
+            .build();
+             Table table = Table.readAvro(opts, TEST_ALL_TYPES_PLAIN_AVRO_FILE)) {
+      assertTablesAreEqual(expected, table);
+    }
+  }
+
+  @Test
+  void testReadAvroBuffer() throws IOException{
+    AvroOptions opts = AvroOptions.builder()
+            .includeColumn("bool_col")
+            .includeColumn("int_col")
+            .includeColumn("timestamp_col")
+            .build();
+
+    byte[] buffer = Files.readAllBytes(TEST_ALL_TYPES_PLAIN_AVRO_FILE.toPath());
+    int bufferLen = buffer.length;
+    try (Table expected = new Table.TestBuilder()
+            .column(true, false, true, false, true, false, true, false)
+            .column(0, 1, 0, 1, 0, 1, 0, 1)
+            .column(1235865600000000L, 1235865660000000L, 1238544000000000L, 1238544060000000L,
+                    1233446400000000L, 1233446460000000L, 1230768000000000L, 1230768060000000L)
+            .build();
+         Table table = Table.readAvro(opts, buffer, 0, bufferLen)) {
+      assertTablesAreEqual(expected, table);
+    }
+  }
+
+  @Test
+  void testReadAvroFull() {
+    try (Table expected = new Table.TestBuilder()
+            .column(4, 5, 6, 7, 2, 3, 0, 1)
+            .column(true, false, true, false, true, false, true, false)
+            .column(0, 1, 0, 1, 0, 1, 0, 1)
+            .column(0, 1, 0, 1, 0, 1, 0, 1)
+            .column(0, 1, 0, 1, 0, 1, 0, 1)
+            .column(0L, 10L, 0L, 10L, 0L, 10L, 0L, 10L)
+            .column(0.0f, 1.100000023841858f, 0.0f, 1.100000023841858f, 0.0f, 1.100000023841858f, 0.0f, 1.100000023841858f)
+            .column(0.0d, 10.1d, 0.0d, 10.1d, 0.0d, 10.1d, 0.0d, 10.1d)
+            .column("03/01/09", "03/01/09", "04/01/09", "04/01/09", "02/01/09", "02/01/09", "01/01/09", "01/01/09")
+            .column("0", "1", "0", "1", "0", "1", "0", "1")
+            .column(1235865600000000L, 1235865660000000L, 1238544000000000L, 1238544060000000L,
+                    1233446400000000L, 1233446460000000L, 1230768000000000L, 1230768060000000L)
+            .build();
+         Table table = Table.readAvro(TEST_ALL_TYPES_PLAIN_AVRO_FILE)) {
+      assertTablesAreEqual(expected, table);
+    }
+  }
+
   @Test
   void testReadORC() {
     ORCOptions opts = ORCOptions.builder()