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AHttpTask.java
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520 lines (455 loc) · 12.9 KB
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package cn.zhxu.okhttps;
import cn.zhxu.data.Array;
import cn.zhxu.data.Mapper;
import cn.zhxu.data.TypeRef;
import cn.zhxu.okhttps.HttpResult.State;
import cn.zhxu.okhttps.internal.AbstractHttpClient;
import cn.zhxu.okhttps.internal.CopyInterceptor;
import cn.zhxu.okhttps.internal.RealHttpResult;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.Response;
import java.io.IOException;
import java.lang.reflect.Type;
import java.util.List;
import java.util.concurrent.CountDownLatch;
import java.util.function.Consumer;
/**
* 异步 Http 请求任务
*
* @author Troy.Zhou
*
*/
public class AHttpTask extends HttpTask<AHttpTask> {
private Consumer<HttpResult> onResponse;
private Consumer<IOException> onException;
private Consumer<State> onComplete;
private boolean responseOnIO;
private boolean exceptionOnIO;
private boolean completeOnIO;
private Consumer<HttpResult.Body> onResBody;
private Consumer<Mapper> onResMapper;
private Consumer<Array> onResArray;
private Consumer<String> onResString;
private Consumer<?> onResBean;
private Consumer<?> onResList;
private boolean resBodyOnIO;
private boolean resMapperOnIO;
private boolean resArrayOnIO;
private boolean resStringOnIO;
private boolean resBeanOnIO;
private boolean resListOnIO;
private Type beanType;
private Class<?> listType;
public AHttpTask(AbstractHttpClient client, String url) {
super(client, url);
}
@Override
public boolean isAsyncHttp() {
return true;
}
/**
* 设置请求执行异常后的回调函数，设置后，相关异常将不再向上抛出
* @param onException 请求异常回调
* @return HttpTask 实例
*/
public AHttpTask setOnException(Consumer<IOException> onException) {
this.onException = onException;
exceptionOnIO = nextOnIO;
nextOnIO = false;
return this;
}
/**
* 设置请求执行完成后的回调函数，无论成功|失败|异常 都会被执行
* @param onComplete 请求完成回调
* @return HttpTask 实例
*/
public AHttpTask setOnComplete(Consumer<State> onComplete) {
this.onComplete = onComplete;
completeOnIO = nextOnIO;
nextOnIO = false;
return this;
}
/**
* 设置请求得到响应后的回调函数
* @param onResponse 请求响应回调
* @return HttpTask 实例
*/
public synchronized AHttpTask setOnResponse(Consumer<HttpResult> onResponse) {
this.onResponse = onResponse;
responseOnIO = nextOnIO;
nextOnIO = false;
return this;
}
/**
* 设置请求得到响应后的回调函数
* @param onResBody 响应报文体回调
* @return HttpTask 实例
*/
public synchronized AHttpTask setOnResBody(Consumer<HttpResult.Body> onResBody) {
this.onResBody = onResBody;
resBodyOnIO = nextOnIO;
nextOnIO = false;
return this;
}
/**
* 设置请求得到响应后的回调函数
* @param <T> 泛型
* @param type 期望的转换类型
* @param onResBean 响应 Bean 回调
* @return HttpTask 实例
*/
public synchronized <T> AHttpTask setOnResBean(Class<T> type, Consumer<T> onResBean) {
initBeanType(type);
this.onResBean = onResBean;
resBeanOnIO = nextOnIO;
nextOnIO = false;
return this;
}
/**
* 设置请求得到响应后的回调函数
* @param <T> 泛型
* @param type 期望的转换类型
* @param onResBean 响应 Bean 回调
* @return HttpTask 实例
*/
public synchronized <T> AHttpTask setOnResBean(TypeRef<T> type, Consumer<T> onResBean) {
initBeanType(type.getType());
this.onResBean = onResBean;
resBeanOnIO = nextOnIO;
nextOnIO = false;
return this;
}
/**
* 设置请求得到响应后的回调函数
* @param <T> 泛型
* @param type 期望的转换类型
* @param onResList 请求响应回调
* @return HttpTask 实例
*/
public synchronized <T> AHttpTask setOnResList(Class<T> type, Consumer<List<T>> onResList) {
if (type == null) {
throw new IllegalArgumentException(" list type can not be null!");
}
listType = type;
this.onResList = onResList;
resListOnIO = nextOnIO;
nextOnIO = false;
return this;
}
/**
* 设置请求得到响应后的回调函数
* @param onResMapper 请求响应回调
* @return HttpTask 实例
*/
public synchronized AHttpTask setOnResMapper(Consumer<Mapper> onResMapper) {
this.onResMapper = onResMapper;
resMapperOnIO = nextOnIO;
nextOnIO = false;
return this;
}
/**
* 设置请求得到响应后的回调函数
* @param onResArray 请求响应回调
* @return HttpTask 实例
*/
public synchronized AHttpTask setOnResArray(Consumer<Array> onResArray) {
this.onResArray = onResArray;
resArrayOnIO = nextOnIO;
nextOnIO = false;
return this;
}
/**
* 设置请求得到响应后的回调函数
* @param onResString 请求响应回调
* @return HttpTask 实例
*/
public synchronized AHttpTask setOnResString(Consumer<String> onResString) {
this.onResString = onResString;
resStringOnIO = nextOnIO;
nextOnIO = false;
return this;
}
/**
* 发起 GET 请求（Rest：读取资源，幂等）
* @return HttpCall
*/
public HttpCall get() {
return request(HTTP.GET);
}
/**
* 发起 HEAD 请求（Rest：读取资源头信息，幂等）
* @return HttpCall
*/
public HttpCall head() {
return request(HTTP.HEAD);
}
/**
* 发起 POST 请求（Rest：创建资源，非幂等）
* @return HttpCall
*/
public HttpCall post() {
return request(HTTP.POST);
}
/**
* 发起 PUT 请求（Rest：更新资源，幂等）
* @return HttpCall
*/
public HttpCall put() {
return request(HTTP.PUT);
}
/**
* 发起 PATCH 请求（Rest：更新资源，部分更新，幂等）
* @return HttpCall
*/
public HttpCall patch() {
return request(HTTP.PATCH);
}
/**
* 发起 DELETE 请求（Rest：删除资源，幂等）
* @return HttpCall
*/
public HttpCall delete() {
return request(HTTP.DELETE);
}
/**
* 发起 HTTP 请求
* @param method 请求方法
* @return HttpCall
*/
public HttpCall request(String method) {
if (method == null || method.isEmpty()) {
throw new IllegalArgumentException("HTTP 请求方法 method 不可为空！");
}
PreHttpCall call = new PreHttpCall();
registeTagTask(call);
httpClient.preprocess(this, () -> {
synchronized (call) {
if (call.canceled) {
removeTagTask();
} else {
if (onResponse != null || onResBody != null) {
tag(CopyInterceptor.TAG);
}
call.setCall(executeCall(prepareCall(method)));
}
}
}, skipPreproc, skipSerialPreproc);
return call;
}
class PreHttpCall implements HttpCall {
HttpCall call;
boolean canceled = false;
CountDownLatch latch = new CountDownLatch(1);
@Override
public synchronized boolean cancel() {
canceled = call == null || call.cancel();
latch.countDown();
return canceled;
}
@Override
public boolean isDone() {
if (call != null) {
return call.isDone();
}
return canceled;
}
@Override
public boolean isCanceled() {
return canceled;
}
void setCall(HttpCall call) {
this.call = call;
latch.countDown();
}
@Override
public HttpResult getResult() {
if (timeoutAwait(latch)) {
cancel();
return timeoutResult();
}
if (canceled || call == null) {
return new RealHttpResult(AHttpTask.this, State.CANCELED);
}
return call.getResult();
}
@Override
public AHttpTask getTask() {
return AHttpTask.this;
}
}
public class OkHttpCall implements HttpCall {
final Call call;
HttpResult result;
CountDownLatch latch = new CountDownLatch(1);
boolean finished = false;
OkHttpCall(Call call) {
this.call = call;
}
@Override
public synchronized boolean cancel() {
if (result == null || !finished) {
call.cancel();
return true;
}
return false;
}
@Override
public boolean isDone() {
return result != null && finished || call.isCanceled();
}
@Override
public boolean isCanceled() {
return call.isCanceled() || (result != null && result.getState() == State.CANCELED);
}
@Override
public HttpResult getResult() {
if (result == null) {
if (timeoutAwait(latch)) {
cancel();
return timeoutResult();
}
}
return result;
}
@Override
public AHttpTask getTask() {
return AHttpTask.this;
}
void setResult(HttpResult result) {
this.result = result;
latch.countDown();
}
public void finish() {
this.finished = true;
}
}
private HttpCall executeCall(Call call) {
OkHttpCall httpCall = new OkHttpCall(call);
call.enqueue(new Callback() {
@Override
@SuppressWarnings("NullableProblems")
public void onFailure(Call call, IOException error) {
State state = toState(error);
HttpResult result = new RealHttpResult(AHttpTask.this, state, error);
onCallback(httpCall, result, () -> {
TaskExecutor executor = httpClient.executor();
executor.executeOnComplete(AHttpTask.this, onComplete, state, completeOnIO);
if (!httpCall.isCanceled() && !executor.executeOnException(AHttpTask.this, httpCall, onException, error, exceptionOnIO)
&& !nothrow) {
throw new OkHttpsException(state, "异步请求异常：" + getUrl(), error);
}
});
}
@Override
@SuppressWarnings("NullableProblems")
public void onResponse(Call call, Response response) {
TaskExecutor executor = httpClient.executor();
HttpResult result = new RealHttpResult(AHttpTask.this, response, executor);
onCallback(httpCall, result, () -> {
executor.executeOnComplete(AHttpTask.this, onComplete, State.RESPONSED, completeOnIO);
if (!httpCall.isCanceled()) {
executor.executeOnResponse(AHttpTask.this, httpCall, complexOnResponse(httpCall), result, true);
}
});
}
});
return httpCall;
}
@SuppressWarnings("all")
private void onCallback(OkHttpCall httpCall, HttpResult result, Runnable runnable) {
synchronized (httpCall) {
removeTagTask();
if (httpCall.isCanceled() || result.getState() == State.CANCELED) {
httpCall.setResult(new RealHttpResult(AHttpTask.this, State.CANCELED));
} else {
httpCall.setResult(result);
}
runnable.run();
}
}
interface ResponseCallback {
void on(Runnable runnable, boolean onIo);
}
@SuppressWarnings("unchecked")
private synchronized Consumer<HttpResult> complexOnResponse(OkHttpCall call) {
return res -> {
Consumer<HttpResult> onResp = onResponse;
Consumer<HttpResult.Body> onBody = onResBody;
Consumer<Mapper> onMapper = onResMapper;
Consumer<Array> onArray = onResArray;
Consumer<Object> onBean = (Consumer<Object>) onResBean;
Consumer<Object> onList = (Consumer<Object>) onResList;
Consumer<String> onString = onResString;
int count = 0;
if (onResp != null)
count++;
if (onBody != null)
count++;
if (onMapper != null)
count++;
if (onArray != null)
count++;
if (onBean != null)
count++;
if (onList != null)
count++;
if (onString != null)
count++;
int callbackCount = count;
HttpResult.Body body = res.getBody();
if (callbackCount > 1) {
// 如果回调数量多于 1 个，则为报文体自动开启缓存
body.cache();
}
ResponseCallback callback = (runnable, onIo) -> execute(new Runnable() {
// 记录已经回调的次数
int count = 0;
@Override
public void run() {
if (!call.isCanceled()) {
runnable.run();
}
if (++count >= callbackCount) {
call.finish();
}
}
}, onIo);
if (onResp != null) {
callback.on(() -> onResp.accept(res), responseOnIO);
}
if (onBody != null) {
callback.on(() -> onBody.accept(body), resBodyOnIO);
}
if (onMapper != null) {
Mapper mapper = body.toMapper();
callback.on(() -> onMapper.accept(mapper), resMapperOnIO);
}
if (onArray != null) {
Array array = body.toArray();
callback.on(() -> onArray.accept(array), resArrayOnIO);
}
if (onBean != null) {
Object bean = body.toBean(beanType);
callback.on(() -> onBean.accept(bean), resBeanOnIO);
}
if (onList != null) {
List<?> list = body.toList(listType);
callback.on(() -> onList.accept(list), resListOnIO);
}
if (onString != null) {
String string = body.toString();
callback.on(() -> onString.accept(string), resStringOnIO);
}
};
}
private void initBeanType(Type type) {
if (type == null) {
throw new IllegalArgumentException(" bean type can not be null!");
}
if (beanType != null) {
throw new IllegalStateException("已经添加了 OnResBean 回调！");
}
beanType = type;
}
}