/
ExtensionLoaderTest.java
656 lines (556 loc) · 27.9 KB
/
ExtensionLoaderTest.java
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/*
* 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.dubbo.common.extension;
import org.apache.dubbo.common.URL;
import org.apache.dubbo.common.convert.Converter;
import org.apache.dubbo.common.convert.StringToBooleanConverter;
import org.apache.dubbo.common.convert.StringToDoubleConverter;
import org.apache.dubbo.common.convert.StringToIntegerConverter;
import org.apache.dubbo.common.extension.activate.ActivateExt1;
import org.apache.dubbo.common.extension.activate.ActivateWrapperExt1;
import org.apache.dubbo.common.extension.activate.impl.ActivateExt1Impl1;
import org.apache.dubbo.common.extension.activate.impl.GroupActivateExtImpl;
import org.apache.dubbo.common.extension.activate.impl.OldActivateExt1Impl2;
import org.apache.dubbo.common.extension.activate.impl.OldActivateExt1Impl3;
import org.apache.dubbo.common.extension.activate.impl.ValueActivateExtImpl;
import org.apache.dubbo.common.extension.activate.impl.OrderActivateExtImpl1;
import org.apache.dubbo.common.extension.activate.impl.OrderActivateExtImpl2;
import org.apache.dubbo.common.extension.convert.String2BooleanConverter;
import org.apache.dubbo.common.extension.convert.String2DoubleConverter;
import org.apache.dubbo.common.extension.convert.String2IntegerConverter;
import org.apache.dubbo.common.extension.duplicated.DuplicatedOverriddenExt;
import org.apache.dubbo.common.extension.duplicated.DuplicatedWithoutOverriddenExt;
import org.apache.dubbo.common.extension.ext1.SimpleExt;
import org.apache.dubbo.common.extension.ext1.impl.SimpleExtImpl1;
import org.apache.dubbo.common.extension.ext1.impl.SimpleExtImpl2;
import org.apache.dubbo.common.extension.ext10_multi_names.Ext10MultiNames;
import org.apache.dubbo.common.extension.ext2.Ext2;
import org.apache.dubbo.common.extension.ext6_wrap.WrappedExt;
import org.apache.dubbo.common.extension.ext6_wrap.impl.Ext5Wrapper1;
import org.apache.dubbo.common.extension.ext6_wrap.impl.Ext5Wrapper2;
import org.apache.dubbo.common.extension.ext7.InitErrorExt;
import org.apache.dubbo.common.extension.ext8_add.AddExt1;
import org.apache.dubbo.common.extension.ext8_add.AddExt2;
import org.apache.dubbo.common.extension.ext8_add.AddExt3;
import org.apache.dubbo.common.extension.ext8_add.AddExt4;
import org.apache.dubbo.common.extension.ext8_add.impl.AddExt1_ManualAdd1;
import org.apache.dubbo.common.extension.ext8_add.impl.AddExt1_ManualAdd2;
import org.apache.dubbo.common.extension.ext8_add.impl.AddExt1Impl1;
import org.apache.dubbo.common.extension.ext8_add.impl.AddExt2_ManualAdaptive;
import org.apache.dubbo.common.extension.ext8_add.impl.AddExt1_ManualAdaptive;
import org.apache.dubbo.common.extension.ext8_add.impl.AddExt3_ManualAdaptive;
import org.apache.dubbo.common.extension.ext8_add.impl.AddExt4_ManualAdaptive;
import org.apache.dubbo.common.extension.ext9_empty.Ext9Empty;
import org.apache.dubbo.common.extension.ext9_empty.impl.Ext9EmptyImpl;
import org.apache.dubbo.common.extension.injection.InjectExt;
import org.apache.dubbo.common.extension.injection.impl.InjectExtImpl;
import org.apache.dubbo.common.lang.Prioritized;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import static org.apache.dubbo.common.constants.CommonConstants.GROUP_KEY;
import static org.apache.dubbo.common.extension.ExtensionLoader.getExtensionLoader;
import static org.apache.dubbo.common.extension.ExtensionLoader.getLoadingStrategies;
import static org.hamcrest.CoreMatchers.anyOf;
import static org.hamcrest.CoreMatchers.allOf;
import static org.hamcrest.CoreMatchers.instanceOf;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.containsString;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.fail;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.junit.jupiter.api.Assertions.assertFalse;
public class ExtensionLoaderTest {
@Test
public void test_getExtensionLoader_Null() throws Exception {
try {
getExtensionLoader(null);
fail();
} catch (IllegalArgumentException expected) {
assertThat(expected.getMessage(),
containsString("Extension type == null"));
}
}
@Test
public void test_getExtensionLoader_NotInterface() throws Exception {
try {
getExtensionLoader(ExtensionLoaderTest.class);
fail();
} catch (IllegalArgumentException expected) {
assertThat(expected.getMessage(),
containsString("Extension type (class org.apache.dubbo.common.extension.ExtensionLoaderTest) is not an interface"));
}
}
@Test
public void test_getExtensionLoader_NotSpiAnnotation() throws Exception {
try {
getExtensionLoader(NoSpiExt.class);
fail();
} catch (IllegalArgumentException expected) {
assertThat(expected.getMessage(),
allOf(containsString("org.apache.dubbo.common.extension.NoSpiExt"),
containsString("is not an extension"),
containsString("NOT annotated with @SPI")));
}
}
@Test
public void test_getDefaultExtension() throws Exception {
SimpleExt ext = getExtensionLoader(SimpleExt.class).getDefaultExtension();
assertThat(ext, instanceOf(SimpleExtImpl1.class));
String name = getExtensionLoader(SimpleExt.class).getDefaultExtensionName();
assertEquals("impl1", name);
}
@Test
public void test_getDefaultExtension_NULL() throws Exception {
Ext2 ext = getExtensionLoader(Ext2.class).getDefaultExtension();
assertNull(ext);
String name = getExtensionLoader(Ext2.class).getDefaultExtensionName();
assertNull(name);
}
@Test
public void test_getExtension() throws Exception {
assertTrue(getExtensionLoader(SimpleExt.class).getExtension("impl1") instanceof SimpleExtImpl1);
assertTrue(getExtensionLoader(SimpleExt.class).getExtension("impl2") instanceof SimpleExtImpl2);
}
@Test
public void test_getExtension_WithWrapper() throws Exception {
WrappedExt impl1 = getExtensionLoader(WrappedExt.class).getExtension("impl1");
assertThat(impl1, anyOf(instanceOf(Ext5Wrapper1.class), instanceOf(Ext5Wrapper2.class)));
WrappedExt impl2 = getExtensionLoader(WrappedExt.class).getExtension("impl2");
assertThat(impl2, anyOf(instanceOf(Ext5Wrapper1.class), instanceOf(Ext5Wrapper2.class)));
URL url = new URL("p1", "1.2.3.4", 1010, "path1");
int echoCount1 = Ext5Wrapper1.echoCount.get();
int echoCount2 = Ext5Wrapper2.echoCount.get();
assertEquals("Ext5Impl1-echo", impl1.echo(url, "ha"));
assertEquals(echoCount1 + 1, Ext5Wrapper1.echoCount.get());
assertEquals(echoCount2 + 1, Ext5Wrapper2.echoCount.get());
}
@Test
public void test_getActivateExtension_WithWrapper() throws Exception {
URL url = URL.valueOf("test://localhost/test");
List<ActivateWrapperExt1> list = getExtensionLoader(ActivateWrapperExt1.class)
.getActivateExtension(url, new String[]{}, "order");
assertEquals(2, list.size());
}
@Test
public void test_getExtension_ExceptionNoExtension() throws Exception {
try {
getExtensionLoader(SimpleExt.class).getExtension("XXX");
fail();
} catch (IllegalStateException expected) {
assertThat(expected.getMessage(),
containsString("No such extension org.apache.dubbo.common.extension.ext1.SimpleExt by name XXX"));
}
}
@Test
public void test_getExtension_ExceptionNoExtension_WrapperNotAffactName() throws Exception {
try {
getExtensionLoader(WrappedExt.class).getExtension("XXX");
fail();
} catch (IllegalStateException expected) {
assertThat(expected.getMessage(),
containsString("No such extension org.apache.dubbo.common.extension.ext6_wrap.WrappedExt by name XXX"));
}
}
@Test
public void test_getExtension_ExceptionNullArg() throws Exception {
try {
getExtensionLoader(SimpleExt.class).getExtension(null);
fail();
} catch (IllegalArgumentException expected) {
assertThat(expected.getMessage(), containsString("Extension name == null"));
}
}
@Test
public void test_hasExtension() throws Exception {
assertTrue(getExtensionLoader(SimpleExt.class).hasExtension("impl1"));
assertFalse(getExtensionLoader(SimpleExt.class).hasExtension("impl1,impl2"));
assertFalse(getExtensionLoader(SimpleExt.class).hasExtension("xxx"));
try {
getExtensionLoader(SimpleExt.class).hasExtension(null);
fail();
} catch (IllegalArgumentException expected) {
assertThat(expected.getMessage(), containsString("Extension name == null"));
}
}
@Test
public void test_hasExtension_wrapperIsNotExt() throws Exception {
assertTrue(getExtensionLoader(WrappedExt.class).hasExtension("impl1"));
assertFalse(getExtensionLoader(WrappedExt.class).hasExtension("impl1,impl2"));
assertFalse(getExtensionLoader(WrappedExt.class).hasExtension("xxx"));
assertFalse(getExtensionLoader(WrappedExt.class).hasExtension("wrapper1"));
try {
getExtensionLoader(WrappedExt.class).hasExtension(null);
fail();
} catch (IllegalArgumentException expected) {
assertThat(expected.getMessage(), containsString("Extension name == null"));
}
}
@Test
public void test_getSupportedExtensions() throws Exception {
Set<String> exts = getExtensionLoader(SimpleExt.class).getSupportedExtensions();
Set<String> expected = new HashSet<String>();
expected.add("impl1");
expected.add("impl2");
expected.add("impl3");
assertEquals(expected, exts);
}
@Test
public void test_getSupportedExtensions_wrapperIsNotExt() throws Exception {
Set<String> exts = getExtensionLoader(WrappedExt.class).getSupportedExtensions();
Set<String> expected = new HashSet<String>();
expected.add("impl1");
expected.add("impl2");
assertEquals(expected, exts);
}
@Test
public void test_AddExtension() throws Exception {
try {
getExtensionLoader(AddExt1.class).getExtension("Manual1");
fail();
} catch (IllegalStateException expected) {
assertThat(expected.getMessage(),
containsString("No such extension org.apache.dubbo.common.extension.ext8_add.AddExt1 by name Manual"));
}
getExtensionLoader(AddExt1.class).addExtension("Manual1", AddExt1_ManualAdd1.class);
AddExt1 ext = getExtensionLoader(AddExt1.class).getExtension("Manual1");
assertThat(ext, instanceOf(AddExt1_ManualAdd1.class));
assertEquals("Manual1", getExtensionLoader(AddExt1.class).getExtensionName(AddExt1_ManualAdd1.class));
ExtensionLoader.resetExtensionLoader(AddExt1.class);
}
@Test
public void test_AddExtension_NoExtend() throws Exception {
// ExtensionLoader.getExtensionLoader(Ext9Empty.class).getSupportedExtensions();
getExtensionLoader(Ext9Empty.class).addExtension("ext9", Ext9EmptyImpl.class);
Ext9Empty ext = getExtensionLoader(Ext9Empty.class).getExtension("ext9");
assertThat(ext, instanceOf(Ext9Empty.class));
assertEquals("ext9", getExtensionLoader(Ext9Empty.class).getExtensionName(Ext9EmptyImpl.class));
}
@Test
public void test_AddExtension_ExceptionWhenExistedExtension() throws Exception {
SimpleExt ext = getExtensionLoader(SimpleExt.class).getExtension("impl1");
try {
getExtensionLoader(AddExt1.class).addExtension("impl1", AddExt1_ManualAdd1.class);
fail();
} catch (IllegalStateException expected) {
assertThat(expected.getMessage(), containsString(
"Extension name impl1 already exists (Extension interface org.apache.dubbo.common.extension.ext8_add.AddExt1)!"));
}
}
@Test
public void test_AddExtension_Adaptive() throws Exception {
ExtensionLoader<AddExt2> loader = getExtensionLoader(AddExt2.class);
loader.addExtension(null, AddExt2_ManualAdaptive.class);
AddExt2 adaptive = loader.getAdaptiveExtension();
assertTrue(adaptive instanceof AddExt2_ManualAdaptive);
}
@Test
public void test_AddExtension_Adaptive_ExceptionWhenExistedAdaptive() throws Exception {
ExtensionLoader<AddExt1> loader = getExtensionLoader(AddExt1.class);
loader.getAdaptiveExtension();
try {
loader.addExtension(null, AddExt1_ManualAdaptive.class);
fail();
} catch (IllegalStateException expected) {
assertThat(expected.getMessage(), containsString(
"Adaptive Extension already exists (Extension interface org.apache.dubbo.common.extension.ext8_add.AddExt1)!"));
}
}
@Test
public void test_replaceExtension() throws Exception {
try {
getExtensionLoader(AddExt1.class).getExtension("Manual2");
fail();
} catch (IllegalStateException expected) {
assertThat(expected.getMessage(),
containsString("No such extension org.apache.dubbo.common.extension.ext8_add.AddExt1 by name Manual"));
}
{
AddExt1 ext = getExtensionLoader(AddExt1.class).getExtension("impl1");
assertThat(ext, instanceOf(AddExt1Impl1.class));
assertEquals("impl1", getExtensionLoader(AddExt1.class).getExtensionName(AddExt1Impl1.class));
}
{
getExtensionLoader(AddExt1.class).replaceExtension("impl1", AddExt1_ManualAdd2.class);
AddExt1 ext = getExtensionLoader(AddExt1.class).getExtension("impl1");
assertThat(ext, instanceOf(AddExt1_ManualAdd2.class));
assertEquals("impl1", getExtensionLoader(AddExt1.class).getExtensionName(AddExt1_ManualAdd2.class));
}
ExtensionLoader.resetExtensionLoader(AddExt1.class);
}
@Test
public void test_replaceExtension_Adaptive() throws Exception {
ExtensionLoader<AddExt3> loader = getExtensionLoader(AddExt3.class);
AddExt3 adaptive = loader.getAdaptiveExtension();
assertFalse(adaptive instanceof AddExt3_ManualAdaptive);
loader.replaceExtension(null, AddExt3_ManualAdaptive.class);
adaptive = loader.getAdaptiveExtension();
assertTrue(adaptive instanceof AddExt3_ManualAdaptive);
ExtensionLoader.resetExtensionLoader(AddExt3.class);
}
@Test
public void test_replaceExtension_ExceptionWhenNotExistedExtension() throws Exception {
AddExt1 ext = getExtensionLoader(AddExt1.class).getExtension("impl1");
try {
getExtensionLoader(AddExt1.class).replaceExtension("NotExistedExtension", AddExt1_ManualAdd1.class);
fail();
} catch (IllegalStateException expected) {
assertThat(expected.getMessage(), containsString(
"Extension name NotExistedExtension doesn't exist (Extension interface org.apache.dubbo.common.extension.ext8_add.AddExt1)"));
}
}
@Test
public void test_replaceExtension_Adaptive_ExceptionWhenNotExistedExtension() throws Exception {
ExtensionLoader<AddExt4> loader = getExtensionLoader(AddExt4.class);
try {
loader.replaceExtension(null, AddExt4_ManualAdaptive.class);
fail();
} catch (IllegalStateException expected) {
assertThat(expected.getMessage(), containsString(
"Adaptive Extension doesn't exist (Extension interface org.apache.dubbo.common.extension.ext8_add.AddExt4)"));
}
}
@Test
public void test_InitError() throws Exception {
ExtensionLoader<InitErrorExt> loader = getExtensionLoader(InitErrorExt.class);
loader.getExtension("ok");
try {
loader.getExtension("error");
fail();
} catch (IllegalStateException expected) {
assertThat(expected.getMessage(), containsString(
"Failed to load extension class (interface: interface org.apache.dubbo.common.extension.ext7.InitErrorExt"));
assertThat(expected.getMessage(), containsString("java.lang.ExceptionInInitializerError"));
}
}
@Test
public void testLoadActivateExtensionWithNoRepeat() {
URL url = URL.valueOf("test://localhost/test");
List<ActivateExt1> list = getExtensionLoader(ActivateExt1.class)
.getActivateExtension(url, new String[] {"old1", "old2"}, "default_group");
Assertions.assertEquals(3, list.size());
list = getExtensionLoader(ActivateExt1.class)
.getActivateExtension(url, new String[] {"old1", "old2", "old1"}, "default_group");
Assertions.assertEquals(3, list.size());
}
@Test
public void testLoadActivateExtension() throws Exception {
// test default
URL url = URL.valueOf("test://localhost/test");
List<ActivateExt1> list = getExtensionLoader(ActivateExt1.class)
.getActivateExtension(url, new String[]{}, "default_group");
assertEquals(1, list.size());
Assertions.assertSame(list.get(0).getClass(), ActivateExt1Impl1.class);
// test group
url = url.addParameter(GROUP_KEY, "group1");
list = getExtensionLoader(ActivateExt1.class)
.getActivateExtension(url, new String[]{}, "group1");
assertEquals(1, list.size());
Assertions.assertSame(list.get(0).getClass(), GroupActivateExtImpl.class);
// test old @Activate group
url = url.addParameter(GROUP_KEY, "old_group");
list = getExtensionLoader(ActivateExt1.class)
.getActivateExtension(url, new String[]{}, "old_group");
assertEquals(2, list.size());
Assertions.assertTrue(list.get(0).getClass() == OldActivateExt1Impl2.class
|| list.get(0).getClass() == OldActivateExt1Impl3.class);
// test value
url = url.removeParameter(GROUP_KEY);
url = url.addParameter(GROUP_KEY, "value");
url = url.addParameter("value", "value");
list = getExtensionLoader(ActivateExt1.class)
.getActivateExtension(url, new String[]{}, "value");
assertEquals(1, list.size());
Assertions.assertSame(list.get(0).getClass(), ValueActivateExtImpl.class);
// test order
url = URL.valueOf("test://localhost/test");
url = url.addParameter(GROUP_KEY, "order");
list = getExtensionLoader(ActivateExt1.class)
.getActivateExtension(url, new String[]{}, "order");
assertEquals(2, list.size());
Assertions.assertSame(list.get(0).getClass(), OrderActivateExtImpl1.class);
Assertions.assertSame(list.get(1).getClass(), OrderActivateExtImpl2.class);
}
@Test
public void testLoadDefaultActivateExtension() throws Exception {
// test default
URL url = URL.valueOf("test://localhost/test?ext=order1,default");
List<ActivateExt1> list = getExtensionLoader(ActivateExt1.class)
.getActivateExtension(url, "ext", "default_group");
assertEquals(2, list.size());
Assertions.assertSame(list.get(0).getClass(), OrderActivateExtImpl1.class);
Assertions.assertSame(list.get(1).getClass(), ActivateExt1Impl1.class);
url = URL.valueOf("test://localhost/test?ext=default,order1");
list = getExtensionLoader(ActivateExt1.class)
.getActivateExtension(url, "ext", "default_group");
assertEquals(2, list.size());
Assertions.assertSame(list.get(0).getClass(), ActivateExt1Impl1.class);
Assertions.assertSame(list.get(1).getClass(), OrderActivateExtImpl1.class);
}
@Test
public void testInjectExtension() {
// test default
InjectExt injectExt = getExtensionLoader(InjectExt.class).getExtension("injection");
InjectExtImpl injectExtImpl = (InjectExtImpl) injectExt;
Assertions.assertNotNull(injectExtImpl.getSimpleExt());
Assertions.assertNull(injectExtImpl.getSimpleExt1());
Assertions.assertNull(injectExtImpl.getGenericType());
}
@Test
void testMultiNames() {
Ext10MultiNames ext10MultiNames = getExtensionLoader(Ext10MultiNames.class).getExtension("impl");
Assertions.assertNotNull(ext10MultiNames);
ext10MultiNames = getExtensionLoader(Ext10MultiNames.class).getExtension("implMultiName");
Assertions.assertNotNull(ext10MultiNames);
Assertions.assertThrows(
IllegalStateException.class,
() -> getExtensionLoader(Ext10MultiNames.class).getExtension("impl,implMultiName")
);
}
@Test
public void testGetOrDefaultExtension() {
ExtensionLoader<InjectExt> loader = getExtensionLoader(InjectExt.class);
InjectExt injectExt = loader.getOrDefaultExtension("non-exists");
assertEquals(InjectExtImpl.class, injectExt.getClass());
assertEquals(InjectExtImpl.class, loader.getOrDefaultExtension("injection").getClass());
}
@Test
public void testGetSupported() {
ExtensionLoader<InjectExt> loader = getExtensionLoader(InjectExt.class);
assertEquals(1, loader.getSupportedExtensions().size());
assertEquals(Collections.singleton("injection"), loader.getSupportedExtensions());
}
/**
* @since 2.7.7
*/
@Test
public void testOverridden() {
ExtensionLoader<Converter> loader = getExtensionLoader(Converter.class);
Converter converter = loader.getExtension("string-to-boolean");
assertEquals(String2BooleanConverter.class, converter.getClass());
converter = loader.getExtension("string-to-double");
assertEquals(String2DoubleConverter.class, converter.getClass());
converter = loader.getExtension("string-to-integer");
assertEquals(String2IntegerConverter.class, converter.getClass());
assertEquals("string-to-boolean", loader.getExtensionName(String2BooleanConverter.class));
assertEquals("string-to-boolean", loader.getExtensionName(StringToBooleanConverter.class));
assertEquals("string-to-double", loader.getExtensionName(String2DoubleConverter.class));
assertEquals("string-to-double", loader.getExtensionName(StringToDoubleConverter.class));
assertEquals("string-to-integer", loader.getExtensionName(String2IntegerConverter.class));
assertEquals("string-to-integer", loader.getExtensionName(StringToIntegerConverter.class));
}
/**
* @since 2.7.7
*/
@Test
public void testGetLoadingStrategies() {
List<LoadingStrategy> strategies = getLoadingStrategies();
assertEquals(4, strategies.size());
int i = 0;
LoadingStrategy loadingStrategy = strategies.get(i++);
assertEquals(DubboInternalLoadingStrategy.class, loadingStrategy.getClass());
assertEquals(Prioritized.MAX_PRIORITY, loadingStrategy.getPriority());
loadingStrategy = strategies.get(i++);
assertEquals(DubboExternalLoadingStrategy.class, loadingStrategy.getClass());
assertEquals(Prioritized.MAX_PRIORITY + 1, loadingStrategy.getPriority());
loadingStrategy = strategies.get(i++);
assertEquals(DubboLoadingStrategy.class, loadingStrategy.getClass());
assertEquals(Prioritized.NORMAL_PRIORITY, loadingStrategy.getPriority());
loadingStrategy = strategies.get(i++);
assertEquals(ServicesLoadingStrategy.class, loadingStrategy.getClass());
assertEquals(Prioritized.MIN_PRIORITY, loadingStrategy.getPriority());
}
/**
* see issue: https://github.com/apache/dubbo/issues/3575
*/
@Test
public void testDuplicatedImplWithoutOverriddenStrategy() {
List<LoadingStrategy> loadingStrategies = ExtensionLoader.getLoadingStrategies();
ExtensionLoader.setLoadingStrategies(new DubboExternalLoadingStrategyTest(false),
new DubboInternalLoadingStrategyTest(false));
ExtensionLoader<DuplicatedWithoutOverriddenExt> extensionLoader = ExtensionLoader.getExtensionLoader(DuplicatedWithoutOverriddenExt.class);
try {
extensionLoader.getExtension("duplicated");
fail();
} catch (IllegalStateException expected) {
assertThat(expected.getMessage(), containsString("Failed to load extension class (interface: interface org.apache.dubbo.common.extension.duplicated.DuplicatedWithoutOverriddenExt"));
assertThat(expected.getMessage(), containsString("cause: Duplicate extension org.apache.dubbo.common.extension.duplicated.DuplicatedWithoutOverriddenExt name duplicated"));
}finally {
//recover the loading strategies
ExtensionLoader.setLoadingStrategies(loadingStrategies.toArray(new LoadingStrategy[loadingStrategies.size()]));
}
}
@Test
public void testDuplicatedImplWithOverriddenStrategy() {
List<LoadingStrategy> loadingStrategies = ExtensionLoader.getLoadingStrategies();
ExtensionLoader.setLoadingStrategies(new DubboExternalLoadingStrategyTest(true),
new DubboInternalLoadingStrategyTest(true));
ExtensionLoader<DuplicatedOverriddenExt> extensionLoader = ExtensionLoader.getExtensionLoader(DuplicatedOverriddenExt.class);
DuplicatedOverriddenExt duplicatedOverriddenExt = extensionLoader.getExtension("duplicated");
assertEquals("DuplicatedOverriddenExt1", duplicatedOverriddenExt.echo());
//recover the loading strategies
ExtensionLoader.setLoadingStrategies(loadingStrategies.toArray(new LoadingStrategy[loadingStrategies.size()]));
}
/**
* The external {@link LoadingStrategy}, which can set if it support overridden
* see issue: https://github.com/apache/dubbo/issues/3575
*/
private static class DubboExternalLoadingStrategyTest implements LoadingStrategy {
public DubboExternalLoadingStrategyTest(boolean overridden) {
this.overridden = overridden;
}
private boolean overridden;
@Override
public String directory() {
return "META-INF/dubbo/external/";
}
@Override
public boolean overridden() {
return this.overridden;
}
@Override
public int getPriority() {
return MAX_PRIORITY + 1;
}
}
/**
* The internal {@link LoadingStrategy}, which can set if it support overridden
* see issue: https://github.com/apache/dubbo/issues/3575
*/
private static class DubboInternalLoadingStrategyTest implements LoadingStrategy {
public DubboInternalLoadingStrategyTest(boolean overridden) {
this.overridden = overridden;
}
private boolean overridden;
@Override
public String directory() {
return "META-INF/dubbo/internal/";
}
@Override
public boolean overridden() {
return this.overridden;
}
@Override
public int getPriority() {
return MAX_PRIORITY;
}
}
}