| /** |
| * 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.avro.tool; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileOutputStream; |
| import java.io.FileWriter; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.PrintStream; |
| import java.io.StringBufferInputStream; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.apache.avro.AvroTestUtil; |
| import org.apache.avro.Schema; |
| import org.apache.avro.Schema.Type; |
| import org.apache.avro.file.DataFileReader; |
| import org.apache.avro.file.DataFileWriter; |
| import org.apache.avro.generic.GenericDatumReader; |
| import org.apache.avro.generic.GenericDatumWriter; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| |
| @SuppressWarnings("deprecation") |
| public class TestDataFileTools { |
| static final int COUNT = 10; |
| static File sampleFile; |
| static String jsonData; |
| static Schema schema; |
| static File schemaFile; |
| |
| private static final String KEY_NEEDING_ESCAPES = "trn\\\r\t\n"; |
| private static final String ESCAPED_KEY = "trn\\\\\\r\\t\\n"; |
| |
| @BeforeClass |
| public static void writeSampleFile() throws IOException { |
| sampleFile = AvroTestUtil.tempFile(TestDataFileTools.class, |
| TestDataFileTools.class.getName() + ".avro"); |
| schema = Schema.create(Type.INT); |
| schemaFile = AvroTestUtil.tempFile(TestDataFileTools.class, "schema-temp.schema"); |
| FileWriter fw = new FileWriter(schemaFile); |
| fw.append(schema.toString()); |
| fw.close(); |
| |
| DataFileWriter<Object> writer |
| = new DataFileWriter<Object>(new GenericDatumWriter<Object>(schema)) |
| .setMeta(KEY_NEEDING_ESCAPES, "") |
| .create(schema, sampleFile); |
| StringBuilder builder = new StringBuilder(); |
| |
| for (int i = 0; i < COUNT; ++i) { |
| builder.append(Integer.toString(i)); |
| builder.append("\n"); |
| writer.append(i); |
| } |
| |
| writer.flush(); |
| writer.close(); |
| |
| jsonData = builder.toString(); |
| } |
| |
| private String run(Tool tool, String... args) throws Exception { |
| return run(tool, null, args); |
| } |
| |
| private String run(Tool tool, InputStream stdin, String... args) throws Exception { |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| PrintStream p = new PrintStream(baos); |
| tool.run( |
| stdin, |
| p, // stdout |
| null, // stderr |
| Arrays.asList(args)); |
| return baos.toString("UTF-8").replace("\r", ""); |
| } |
| |
| @Test |
| public void testRead() throws Exception { |
| assertEquals(jsonData, |
| run(new DataFileReadTool(), sampleFile.getPath())); |
| } |
| |
| @Test |
| public void testReadStdin() throws Exception { |
| FileInputStream stdin = new FileInputStream(sampleFile); |
| assertEquals(jsonData, run(new DataFileReadTool(), stdin, "-")); |
| } |
| |
| @Test |
| public void testReadToJsonPretty() throws Exception { |
| assertEquals(jsonData, |
| run(new DataFileReadTool(), "--pretty", sampleFile.getPath())); |
| } |
| |
| @Test |
| public void testGetMeta() throws Exception { |
| String output = run(new DataFileGetMetaTool(), sampleFile.getPath()); |
| assertTrue(output, output.contains("avro.schema\t"+schema.toString()+"\n")); |
| assertTrue(output, output.contains(ESCAPED_KEY+"\t\n")); |
| } |
| |
| @Test |
| public void testGetMetaForSingleKey() throws Exception { |
| assertEquals(schema.toString() + "\n", |
| run(new DataFileGetMetaTool(), sampleFile.getPath(), "--key", |
| "avro.schema")); |
| } |
| |
| @Test |
| public void testGetSchema() throws Exception { |
| assertEquals(schema.toString() + "\n", |
| run(new DataFileGetSchemaTool(), sampleFile.getPath())); |
| } |
| |
| @Test |
| public void testWriteWithDeflate() throws Exception { |
| testWrite("deflate", Arrays.asList("--codec", "deflate"), "deflate"); |
| } |
| |
| @Test |
| public void testWrite() throws Exception { |
| testWrite("plain", Collections.<String>emptyList(), "null"); |
| } |
| |
| public void testWrite(String name, List<String> extra, String expectedCodec) |
| throws Exception { |
| testWrite(name, extra, expectedCodec, "-schema", schema.toString()); |
| testWrite(name, extra, expectedCodec, "-schema-file", schemaFile.toString()); |
| } |
| public void testWrite(String name, List<String> extra, String expectedCodec, String... extraArgs) |
| throws Exception { |
| File outFile = AvroTestUtil.tempFile(getClass(), |
| TestDataFileTools.class + ".testWrite." + name + ".avro"); |
| FileOutputStream fout = new FileOutputStream(outFile); |
| PrintStream out = new PrintStream(fout); |
| List<String> args = new ArrayList<String>(); |
| for (String arg : extraArgs) { |
| args.add(arg); |
| } |
| args.add("-"); |
| args.addAll(extra); |
| new DataFileWriteTool().run( |
| new StringBufferInputStream(jsonData), |
| new PrintStream(out), // stdout |
| null, // stderr |
| args); |
| out.close(); |
| fout.close(); |
| |
| // Read it back, and make sure it's valid. |
| GenericDatumReader<Object> reader = new GenericDatumReader<Object>(); |
| DataFileReader<Object> fileReader = new DataFileReader<Object>(outFile,reader); |
| int i = 0; |
| for (Object datum : fileReader) { |
| assertEquals(i, datum); |
| i++; |
| } |
| assertEquals(COUNT, i); |
| assertEquals(schema, fileReader.getSchema()); |
| String codecStr = fileReader.getMetaString("avro.codec"); |
| if (null == codecStr) { |
| codecStr = "null"; |
| } |
| assertEquals(expectedCodec, codecStr); |
| } |
| |
| @Test |
| public void testFailureOnWritingPartialJSONValues() throws Exception { |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| PrintStream out = new PrintStream(baos); |
| try { |
| new DataFileWriteTool().run( |
| new StringBufferInputStream("{"), |
| new PrintStream(out), // stdout |
| null, // stderr |
| Arrays.asList("-schema", "{ \"type\":\"record\", \"fields\":" + |
| "[{\"name\":\"foo\", \"type\":\"string\"}], " + |
| "\"name\":\"boring\" }", "-")); |
| fail("Expected exception."); |
| } catch (IOException expected) { |
| // expected |
| } |
| } |
| |
| @Test |
| public void testWritingZeroJsonValues() throws Exception { |
| File outFile = writeToAvroFile("zerojsonvalues", |
| schema.toString(), |
| ""); |
| assertEquals(0, countRecords(outFile)); |
| } |
| |
| private int countRecords(File outFile) throws IOException { |
| GenericDatumReader<Object> reader = new GenericDatumReader<Object>(); |
| DataFileReader<Object> fileReader = |
| new DataFileReader<Object>(outFile,reader); |
| int i = 0; |
| for (@SuppressWarnings("unused") Object datum : fileReader) { |
| i++; |
| } |
| return i; |
| } |
| |
| @Test |
| public void testDifferentSeparatorsBetweenJsonRecords() throws Exception { |
| File outFile = writeToAvroFile( |
| "seperators", |
| "{ \"type\":\"array\", \"items\":\"int\" }", |
| "[] [] []\n[][3] "); |
| assertEquals(5, countRecords(outFile)); |
| } |
| |
| public File writeToAvroFile(String testName, String schema, String json) throws Exception { |
| File outFile = AvroTestUtil.tempFile(getClass(), |
| TestDataFileTools.class + "." + testName + ".avro"); |
| FileOutputStream fout = new FileOutputStream(outFile); |
| PrintStream out = new PrintStream(fout); |
| new DataFileWriteTool().run( |
| new StringBufferInputStream(json), |
| new PrintStream(out), // stdout |
| null, // stderr |
| Arrays.asList("-schema", schema, "-")); |
| out.close(); |
| fout.close(); |
| return outFile; |
| } |
| |
| } |