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com.github.dadiyang.httpinvoker.HttpApiProxyFactory Maven / Gradle / Ivy
package com.github.dadiyang.httpinvoker;
import com.github.dadiyang.httpinvoker.propertyresolver.EnvironmentBasePropertyResolver;
import com.github.dadiyang.httpinvoker.propertyresolver.MultiSourcePropertyResolver;
import com.github.dadiyang.httpinvoker.propertyresolver.PropertiesBasePropertyResolver;
import com.github.dadiyang.httpinvoker.propertyresolver.PropertyResolver;
import com.github.dadiyang.httpinvoker.requestor.DefaultHttpRequestor;
import com.github.dadiyang.httpinvoker.requestor.RequestPreprocessor;
import com.github.dadiyang.httpinvoker.requestor.Requestor;
import com.github.dadiyang.httpinvoker.requestor.ResponseProcessor;
import com.github.dadiyang.httpinvoker.util.IoUtils;
import com.github.dadiyang.httpinvoker.util.ObjectUtils;
import org.springframework.core.env.Environment;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Proxy;
import java.util.Map;
import java.util.Properties;
import java.util.concurrent.ConcurrentHashMap;
/**
* A factory to create HttpApiInvoker
*
* @author huangxuyang
* date 2018/10/30
*/
public class HttpApiProxyFactory {
private Map, Object> instances = new ConcurrentHashMap, Object>();
private Requestor requestor;
private PropertyResolver propertyResolver;
private RequestPreprocessor requestPreprocessor;
private ResponseProcessor responseProcessor;
/**
* the builder of HttpApiProxyFactory
*
* @author dadiyang
* @since 2019/5/20
*/
public static class Builder {
private Requestor requestor;
private MultiSourcePropertyResolver propertyResolvers = new MultiSourcePropertyResolver();
private RequestPreprocessor requestPreprocessor;
private ResponseProcessor responseProcessor;
public Builder setRequestor(Requestor requestor) {
this.requestor = requestor;
return this;
}
public Builder setRequestPreprocessor(RequestPreprocessor requestPreprocessor) {
this.requestPreprocessor = requestPreprocessor;
return this;
}
public Builder setResponseProcessor(ResponseProcessor responseProcessor) {
this.responseProcessor = responseProcessor;
return this;
}
public Builder addPropertyResolver(PropertyResolver propertyResolver) {
this.propertyResolvers.addPropertyResolver(propertyResolver);
return this;
}
public Builder addProperties(Properties properties) {
propertyResolvers.addPropertyResolver(new PropertiesBasePropertyResolver(properties));
return this;
}
public Builder addProperties(InputStream in) throws IOException {
try {
Properties properties = new Properties();
properties.load(in);
return addProperties(properties);
} finally {
in.close();
}
}
public Builder addProperties(File file) throws IOException {
ObjectUtils.requireNonNull(file, "properties file should not be null");
Properties properties = IoUtils.getPropertiesFromFile(file.getAbsolutePath());
return addProperties(properties);
}
public Builder addEnvironment(Environment environment) {
propertyResolvers.addPropertyResolver(new EnvironmentBasePropertyResolver(environment));
return this;
}
public HttpApiProxyFactory build() {
HttpApiProxyFactory factory = new HttpApiProxyFactory();
factory.requestor = requestor != null ? requestor : factory.requestor;
factory.responseProcessor = responseProcessor != null ? responseProcessor : factory.responseProcessor;
factory.requestPreprocessor = requestPreprocessor != null ? requestPreprocessor : factory.requestPreprocessor;
propertyResolvers.addPropertyResolver(factory.propertyResolver);
factory.propertyResolver = propertyResolvers;
return factory;
}
}
public HttpApiProxyFactory() {
this(new DefaultHttpRequestor(), System.getProperties());
}
public HttpApiProxyFactory(Requestor requestor) {
this(requestor, System.getProperties());
}
public HttpApiProxyFactory(Properties properties) {
this(new DefaultHttpRequestor(), properties);
}
public HttpApiProxyFactory(Requestor requestor, Properties properties) {
this(requestor, properties, null);
}
public HttpApiProxyFactory(Properties properties, RequestPreprocessor requestPreprocessor) {
this(null, properties, requestPreprocessor);
}
public HttpApiProxyFactory(Properties properties, ResponseProcessor responseProcessor) {
this(properties, null, responseProcessor);
}
public HttpApiProxyFactory(Properties properties, RequestPreprocessor requestPreprocessor, ResponseProcessor responseProcessor) {
this(null, properties, requestPreprocessor, responseProcessor);
}
public HttpApiProxyFactory(RequestPreprocessor requestPreprocessor) {
this(requestPreprocessor, null);
}
public HttpApiProxyFactory(ResponseProcessor responseProcessor) {
this(System.getProperties(), responseProcessor);
}
public HttpApiProxyFactory(RequestPreprocessor requestPreprocessor, ResponseProcessor responseProcessor) {
this(System.getProperties(), requestPreprocessor, responseProcessor);
}
public HttpApiProxyFactory(PropertyResolver propertyResolver) {
this(new DefaultHttpRequestor(), propertyResolver);
}
public HttpApiProxyFactory(Requestor requestor, PropertyResolver propertyResolver) {
this(requestor, propertyResolver, null);
}
public HttpApiProxyFactory(PropertyResolver propertyResolver, RequestPreprocessor requestPreprocessor) {
this(null, propertyResolver, requestPreprocessor);
}
public HttpApiProxyFactory(PropertyResolver propertyResolver, ResponseProcessor responseProcessor) {
this(null, propertyResolver, null, responseProcessor);
}
public HttpApiProxyFactory(PropertyResolver propertyResolver, RequestPreprocessor requestPreprocessor, ResponseProcessor responseProcessor) {
this(null, propertyResolver, requestPreprocessor, responseProcessor);
}
public HttpApiProxyFactory(Requestor requestor,
Properties properties,
RequestPreprocessor requestPreprocessor) {
this(requestor, properties, requestPreprocessor, null);
}
public HttpApiProxyFactory(Requestor requestor,
Properties properties,
RequestPreprocessor requestPreprocessor,
ResponseProcessor responseProcessor) {
this(requestor, properties == null ? null : new PropertiesBasePropertyResolver(properties), requestPreprocessor, responseProcessor);
}
public HttpApiProxyFactory(Requestor requestor,
PropertyResolver propertyResolver,
RequestPreprocessor requestPreprocessor) {
this(requestor, propertyResolver, requestPreprocessor, null);
}
public HttpApiProxyFactory(Requestor requestor,
PropertyResolver propertyResolver,
RequestPreprocessor requestPreprocessor,
ResponseProcessor responseProcessor) {
this.requestor = requestor;
this.propertyResolver = propertyResolver == null ? new PropertiesBasePropertyResolver(System.getProperties()) : propertyResolver;
this.requestPreprocessor = requestPreprocessor;
this.responseProcessor = responseProcessor;
}
public static T newProxy(Class clazz) {
return newProxy(clazz, System.getProperties());
}
public static T newProxy(Class clazz, Properties properties) {
return newProxy(clazz, null, properties);
}
public static T newProxy(Class clazz, RequestPreprocessor requestPreprocessor) {
return newProxy(clazz, System.getProperties(), requestPreprocessor);
}
public static T newProxy(Class clazz, Requestor requestor) {
return newProxy(clazz, requestor, System.getProperties());
}
public static T newProxy(Class clazz, Requestor requestor, Properties properties) {
return newProxy(clazz, requestor, properties, null);
}
public static T newProxy(Class clazz, Properties properties, RequestPreprocessor requestPreprocessor) {
return newProxy(clazz, null, properties, requestPreprocessor);
}
public static T newProxy(Class clazz, Requestor requestor,
Properties properties,
RequestPreprocessor requestPreprocessor) {
return newProxyInstance(requestor, properties, clazz, requestPreprocessor, null);
}
public static T newProxy(Class clazz, Requestor requestor,
Properties properties,
RequestPreprocessor requestPreprocessor, ResponseProcessor responseProcessor) {
return newProxyInstance(requestor, properties, clazz, requestPreprocessor, responseProcessor);
}
public static T newProxy(Class clazz, PropertyResolver propertyResolver) {
return newProxy(clazz, null, propertyResolver);
}
public static T newProxy(Class clazz, Requestor requestor, PropertyResolver propertyResolver) {
return newProxy(clazz, requestor, propertyResolver, null);
}
public static T newProxy(Class clazz, PropertyResolver propertyResolver, RequestPreprocessor requestPreprocessor) {
return newProxy(clazz, null, propertyResolver, requestPreprocessor);
}
public static T newProxy(Class clazz, PropertyResolver propertyResolver, RequestPreprocessor requestPreprocessor, ResponseProcessor responseProcessor) {
return newProxy(clazz, null, propertyResolver, requestPreprocessor, responseProcessor);
}
public static T newProxy(Class clazz, PropertyResolver propertyResolver, ResponseProcessor responseProcessor) {
return newProxy(clazz, null, propertyResolver, null, responseProcessor);
}
public static T newProxy(Class clazz, ResponseProcessor responseProcessor) {
return newProxy(clazz, null, new PropertiesBasePropertyResolver(System.getProperties()), null, responseProcessor);
}
public static T newProxy(Class clazz, Requestor requestor,
PropertyResolver propertyResolver,
RequestPreprocessor requestPreprocessor) {
return newProxyInstance(requestor, propertyResolver, clazz, requestPreprocessor, null);
}
public static T newProxy(Class clazz, Requestor requestor,
PropertyResolver propertyResolver,
RequestPreprocessor requestPreprocessor, ResponseProcessor responseProcessor) {
return newProxyInstance(requestor, propertyResolver, clazz, requestPreprocessor, responseProcessor);
}
private static T newProxyInstance(Requestor requestor, PropertyResolver propertyResolver,
Class clazz, RequestPreprocessor requestPreprocessor, ResponseProcessor responseProcessor) {
InvocationHandler handler = new HttpApiInvoker(requestor, propertyResolver, clazz, requestPreprocessor, responseProcessor);
//noinspection unchecked
return (T) Proxy.newProxyInstance(clazz.getClassLoader(), new Class[]{clazz}, handler);
}
private static T newProxyInstance(Requestor requestor, Properties properties,
Class clazz, RequestPreprocessor requestPreprocessor, ResponseProcessor responseProcessor) {
InvocationHandler handler = new HttpApiInvoker(requestor, properties, clazz, requestPreprocessor, responseProcessor);
//noinspection unchecked
return (T) Proxy.newProxyInstance(clazz.getClassLoader(), new Class[]{clazz}, handler);
}
/**
* dynamic proxy the given interface whose methods annotated with @HttpReq
*
* @param clazz an interface whose methods annotated with @HttpReq
* @param this interface's type
* @return the generated dynamic proxy
* @throws IllegalStateException thrown when the method without annotated with @HttpReq was invoke
*/
public T getProxy(Class clazz) {
if (!instances.containsKey(clazz)) {
synchronized (HttpApiProxyFactory.class) {
if (!instances.containsKey(clazz)) {
instances.put(clazz, newProxyInstance(requestor, propertyResolver,
clazz, requestPreprocessor, responseProcessor));
}
}
}
//noinspection unchecked
return (T) instances.get(clazz);
}
public Requestor getRequestor() {
return requestor;
}
public PropertyResolver getPropertyResolver() {
return propertyResolver;
}
public RequestPreprocessor getRequestPreprocessor() {
return requestPreprocessor;
}
public ResponseProcessor getResponseProcessor() {
return responseProcessor;
}
}
