Java tutorial
package ws.antonov.config.consumer; import com.google.protobuf.Message; import junit.framework.TestCase; import org.apache.commons.httpclient.HttpMethod; import org.springframework.context.support.ClassPathXmlApplicationContext; import org.springframework.core.io.Resource; import org.springframework.core.io.support.PathMatchingResourcePatternResolver; import ws.antonov.config.api.consumer.ConfigClient; import ws.antonov.config.api.consumer.ConfigClientFactoryBean; import ws.antonov.config.api.consumer.ConfigParamsBuilder; import ws.antonov.config.api.provider.ConfigProvider; import ws.antonov.config.consumer.mock.MockHttpClient; import ws.antonov.config.consumer.mock.MockHttpMethod; import ws.antonov.config.provider.HttpConfigProvider; import ws.antonov.config.provider.ResourceConfigProvider; import ws.antonov.config.test.proto.model.FlatConfigObject; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.util.HashMap; import java.util.HashSet; import java.util.Map; import java.util.Set; import java.util.concurrent.atomic.AtomicInteger; /** * Copyright 2011 Alex Antonov * 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. * * @author aantonov * @since 0.1 */ public class ConfigClientTest extends TestCase { public void setUp() throws IOException { FlatConfigObject.Builder builder = FlatConfigObject.newBuilder(); builder.setSystemCode("101"); builder.setValidate(false); builder.setTimeout(10); FlatConfigObject msg = builder.build(); FileOutputStream fos = new FileOutputStream("build/classes/test/config.pb"); msg.writeTo(fos); fos.close(); } public void testFileConfigConsumptionWithBinary() throws Exception { ConfigClient client = new ProviderBasedConfigClient( new ResourceConfigProvider("file://" + System.getProperty("user.dir", "."), "/{file}")); FlatConfigObject config = client.getConfig(FlatConfigObject.class, ConfigParamsBuilder.newInstance("file", "build/classes/test/config.pb").build()); assertEquals(config.getTimeout(), 10); assertEquals(config.getValidate(), false); assertEquals(config.getSystemCode(), "101"); } public void testFileConfigConsumptionWithXml() throws Exception { ConfigClient client = new ProviderBasedConfigClient( new ResourceConfigProvider("file://" + System.getProperty("user.dir", "."), "/{file}")); FlatConfigObject config = client.getConfig(FlatConfigObject.class, ConfigParamsBuilder.newInstance("file", "build/classes/test/config.xml").build()); assertEquals(config.getTimeout(), 10); assertEquals(config.getValidate(), false); assertEquals(config.getSystemCode(), "101"); } public void testFileConfigConsumptionWithJson() throws Exception { ConfigClient client = new ProviderBasedConfigClient( new ResourceConfigProvider("file://" + System.getProperty("user.dir", "."), "/{file}")); FlatConfigObject config = client.getConfig(FlatConfigObject.class, ConfigParamsBuilder.newInstance("file", "build/classes/test/config.json").build()); assertEquals(config.getTimeout(), 10); assertEquals(config.getValidate(), false); assertEquals(config.getSystemCode(), "101"); } public void testFileConfigConsumptionWithProps() throws Exception { ConfigClient client = new ProviderBasedConfigClient( new ResourceConfigProvider("file://" + System.getProperty("user.dir", "."), "/{file}")); FlatConfigObject config = client.getConfig(FlatConfigObject.class, ConfigParamsBuilder.newInstance("file", "build/classes/test/config.properties").build()); assertEquals(config.getTimeout(), 10); assertEquals(config.getValidate(), false); assertEquals(config.getSystemCode(), "101"); } public void testHttpCouchDbConsumption() throws Exception { MockHttpClient httpClient = new MockHttpClient(); final MockHttpMethod method = new MockHttpMethod(); PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver(); Resource json = resolver.getResource("classpath:config.couch"); method.data = json.getInputStream(); ConfigClient client = new ProviderBasedConfigClient( new HttpConfigProvider("http://domain:port/config/", "{path}", httpClient) { @Override protected HttpMethod createHttpMethod(String url) { assertEquals(url, "http://domain:port/config/bf4919676664810d86479e997c4b86a5"); return method; } }); FlatConfigObject config = client.getConfig(FlatConfigObject.class, ConfigParamsBuilder.newInstance("path", "bf4919676664810d86479e997c4b86a5").build()); assertEquals(config.getTimeout(), 10); assertEquals(config.getValidate(), false); assertEquals(config.getSystemCode(), "101"); } public void testInvocationHandlerConsumption() throws Exception { ConfigClient client = new ProviderBasedConfigClient( new ResourceConfigProvider("file://" + System.getProperty("user.dir", "."), "/{domain}/{path}")); ConfigClientFactoryBean<FlatConfigService> bean = new ConfigClientFactoryBean<FlatConfigService>( FlatConfigService.class, client); bean.afterPropertiesSet(); FlatConfigService service = bean.getObject(); FlatConfigObject config = service.getConfig("build/classes", "test/config.properties"); assertEquals(config.getTimeout(), 10); assertEquals(config.getValidate(), false); assertEquals(config.getSystemCode(), "101"); } @SuppressWarnings({ "unchecked" }) public void testCachingConfigClientWrapper() throws Exception { FileInputStream fis = new FileInputStream("build/classes/test/config.pb"); final FlatConfigObject msg = FlatConfigObject.parseFrom(fis); final AtomicInteger accessCount = new AtomicInteger(0); ConfigClient client = new ConfigClient() { @Override public Message getConfig(Class configClass, ConfigParamsBuilder.ConfigParamsMap configParams) { accessCount.incrementAndGet(); if (configParams.size() == 0) return msg; else return null; } @Override public ConfigProvider getConfigProvider() { return null; } @Override public boolean reloadConfig() { return true; } }; Map objects = new HashMap(); Set keys = new HashSet(); CachingConfigClientWrapper cachingConfig = new CachingConfigClientWrapper(client, objects, keys); assertEquals(0, accessCount.get()); assertEquals(0, cachingConfig.getObjectCache().size()); assertEquals(0, cachingConfig.getNegativeCache().size()); assertEquals(cachingConfig.getConfig(FlatConfigObject.class, ConfigParamsBuilder.newInstance().build()), msg); assertEquals(1, accessCount.get()); assertEquals(1, cachingConfig.getObjectCache().size()); assertEquals(0, cachingConfig.getNegativeCache().size()); assertEquals(cachingConfig.getConfig(FlatConfigObject.class, ConfigParamsBuilder.newInstance().build()), msg); assertEquals(1, accessCount.get()); assertEquals(1, cachingConfig.getObjectCache().size()); assertEquals(0, cachingConfig.getNegativeCache().size()); assertNull(cachingConfig.getConfig(FlatConfigObject.class, ConfigParamsBuilder.newInstance("foo", "bar").build())); assertEquals(2, accessCount.get()); assertEquals(1, cachingConfig.getObjectCache().size()); assertEquals(1, cachingConfig.getNegativeCache().size()); assertNull(cachingConfig.getConfig(FlatConfigObject.class, ConfigParamsBuilder.newInstance("foo", "bar").build())); assertEquals(2, accessCount.get()); assertEquals(1, cachingConfig.getObjectCache().size()); assertEquals(1, cachingConfig.getNegativeCache().size()); } public void testSpring() throws Exception { ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("ApplicationContext.xml"); context.refresh(); FlatConfigService service = context.getBean(FlatConfigService.class); FlatConfigObject config = service.getConfig("build/classes", "test/config.properties"); assertEquals(config.getTimeout(), 10); assertEquals(config.getValidate(), false); assertEquals(config.getSystemCode(), "101"); } }