com.facebook.buck.log.ThriftRuleKeyLoggerTest.java Source code

Introduction

Here is the source code for com.facebook.buck.log.ThriftRuleKeyLoggerTest.java

Source

/*
 * Copyright 2017-present Facebook, Inc.
 *
 * 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 com.facebook.buck.log;

import com.facebook.buck.log.thrift.ThriftRuleKeyLogger;
import com.facebook.buck.log.thrift.rulekeys.FullRuleKey;
import com.facebook.buck.log.thrift.rulekeys.Value;
import com.facebook.buck.testutil.TemporaryPaths;
import com.google.common.collect.ImmutableMap;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.ByteBuffer;
import java.nio.file.Path;
import org.apache.thrift.TDeserializer;
import org.apache.thrift.protocol.TCompactProtocol;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;

public class ThriftRuleKeyLoggerTest {

    @Rule
    public TemporaryPaths temporaryFolder = new TemporaryPaths();

    private Path logDir;

    @Before
    public void setUp() throws InterruptedException, IOException {
        logDir = temporaryFolder.newFolder("root");
    }

    @Test
    public void testWritesToGivenFileAndCreatesDirectories() throws Exception {
        Path logPath = logDir.resolve("logs").resolve("out.log").toAbsolutePath();
        try (ThriftRuleKeyLogger logger = ThriftRuleKeyLogger.create(logPath)) {
            Assert.assertNotNull(logger);
            logger.write(new FullRuleKey("rule_key", "name", "rule_type",
                    ImmutableMap.of("key", Value.stringValue("value"))));
        }
        Assert.assertTrue(logPath.toFile().exists());

        ByteBuffer lengthBuf = ByteBuffer.allocate(4);
        try (FileInputStream logFileStream = new FileInputStream(logPath.toFile())) {
            Assert.assertTrue(logFileStream.available() > 4);

            logFileStream.read(lengthBuf.array());
            int length = lengthBuf.getInt();

            Assert.assertEquals(length, logFileStream.available()); // Only should have one object

            byte[] serialized = new byte[length];
            logFileStream.read(serialized);
            TDeserializer serializer = new TDeserializer(new TCompactProtocol.Factory());
            FullRuleKey ruleKey = new FullRuleKey();
            serializer.deserialize(ruleKey, serialized);

            Assert.assertEquals("rule_key", ruleKey.key);
            Assert.assertEquals("name", ruleKey.name);
            Assert.assertEquals("rule_type", ruleKey.type);
            Assert.assertEquals(1, ruleKey.values.size());
            Assert.assertEquals("value", ruleKey.values.get("key").getStringValue());
        }
    }

    private class ErrorWriter extends OutputStream {
        public int writeCalls = 0;

        @Override
        public void write(int b) throws IOException {
            writeCalls++;
            throw new IOException("Oh, no! An error!");
        }
    }

    @Test
    public void testSwallowsWriteExceptions() {
        ErrorWriter writer = new ErrorWriter();
        try (ThriftRuleKeyLogger logger = new ThriftRuleKeyLogger(writer)) {
            logger.write(new FullRuleKey("rule_key", "name", "rule_type",
                    ImmutableMap.of("key", Value.stringValue("value"))));
        }
        Assert.assertEquals(1, writer.writeCalls);
    }
}