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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.config.subscription.impl;
import com.yahoo.config.subscription.DirSource;
import com.yahoo.foo.SimpletypesConfig;
import com.yahoo.foo.TestReferenceConfig;
import com.yahoo.vespa.config.ConfigKey;
import com.yahoo.vespa.config.TimingValues;
import org.junit.Before;
import org.junit.Test;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.nio.file.Files;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotSame;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
/**
* @author Ulf Lilleengen
*/
public class FileConfigSubscriptionTest {
private File TEST_TYPES_FILE;
@Before
public void setUp() throws IOException {
TEST_TYPES_FILE = File.createTempFile("fooconfig", ".cfg");
}
private void writeConfig(String field, String value) throws IOException {
FileWriter writer = new FileWriter(TEST_TYPES_FILE);
writer.write(field + " " + value);
writer.close();
}
@Test
public void require_that_new_config_is_detected_in_time() throws IOException, InterruptedException {
writeConfig("intval", "23");
ConfigSubscription<SimpletypesConfig> sub = new FileConfigSubscription<>(
new ConfigKey<>(SimpletypesConfig.class, ""),
TEST_TYPES_FILE);
assertTrue(sub.nextConfig(1000));
assertThat(sub.getConfigState().getConfig().intval(), is(23));
Thread.sleep(1000);
writeConfig("intval", "33");
assertTrue(sub.nextConfig(1000));
assertThat(sub.getConfigState().getConfig().intval(), is(33));
}
@Test
public void require_that_new_config_is_detected_on_reload() throws IOException {
writeConfig("intval", "23");
ConfigSubscription<SimpletypesConfig> sub = new FileConfigSubscription<>(
new ConfigKey<>(SimpletypesConfig.class, ""),
TEST_TYPES_FILE);
assertTrue(sub.nextConfig(1000));
assertThat(sub.getConfigState().getConfig().intval(), is(23));
writeConfig("intval", "33");
sub.reload(1);
assertTrue(sub.nextConfig(1000));
ConfigSubscription.ConfigState<SimpletypesConfig> configState = sub.getConfigState();
assertThat(configState.getConfig().intval(), is(33));
assertTrue(configState.isConfigChanged());
assertTrue(configState.isGenerationChanged());
assertTrue(sub.isConfigChangedAndReset(7L));
assertSame(configState, sub.getConfigState());
assertTrue(configState.isConfigChanged());
assertTrue(configState.isGenerationChanged());
assertTrue(sub.isConfigChangedAndReset(1L));
assertNotSame(configState, sub.getConfigState());
configState = sub.getConfigState();
assertFalse(configState.isConfigChanged());
assertFalse(configState.isGenerationChanged());
sub.reload(2);
assertTrue(sub.nextConfig(1000));
configState = sub.getConfigState();
assertThat(configState.getConfig().intval(), is(33));
assertFalse(configState.isConfigChanged());
assertTrue(configState.isGenerationChanged());
assertFalse(sub.isConfigChangedAndReset(2L));
assertNotSame(configState, sub.getConfigState());
configState = sub.getConfigState();
assertFalse(configState.isConfigChanged());
assertFalse(configState.isGenerationChanged());
}
@Test
public void require_that_dir_config_id_reference_is_not_changed() {
final String cfgDir = "src/test/resources/configs/foo";
final String cfgId = "dir:" + cfgDir;
final ConfigKey<TestReferenceConfig> key = new ConfigKey<>(TestReferenceConfig.class, cfgId);
ConfigSubscription<TestReferenceConfig> sub = ConfigSubscription.get(key,
new JrtConfigRequesters(),
new DirSource(new File(cfgDir)),
new TimingValues());
assertTrue(sub.nextConfig(1000));
assertThat(sub.getConfigState().getConfig().configId(), is(cfgId));
}
@Test(expected = IllegalArgumentException.class)
public void require_that_bad_file_throws_exception() throws IOException {
// A little trick to ensure that we can create the subscriber, but that we get an error when reading.
writeConfig("intval", "23");
ConfigSubscription<SimpletypesConfig> sub = new FileConfigSubscription<>(
new ConfigKey<>(SimpletypesConfig.class, ""),
TEST_TYPES_FILE);
sub.reload(1);
Files.delete(TEST_TYPES_FILE.toPath()); // delete file so the below statement throws exception
sub.nextConfig(0);
}
}
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