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27 package org.apache.hc.client5.http.async.methods;
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29 import java.io.IOException;
30 import java.io.UnsupportedEncodingException;
31 import java.nio.charset.UnsupportedCharsetException;
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33 import org.apache.hc.core5.concurrent.FutureCallback;
34 import org.apache.hc.core5.http.ContentType;
35 import org.apache.hc.core5.http.EntityDetails;
36 import org.apache.hc.core5.http.HttpException;
37 import org.apache.hc.core5.http.HttpResponse;
38 import org.apache.hc.core5.http.nio.AsyncResponseConsumer;
39 import org.apache.hc.core5.http.nio.entity.AbstractBinDataConsumer;
40 import org.apache.hc.core5.http.protocol.HttpContext;
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49 public abstract class AbstractBinResponseConsumer<T> extends AbstractBinDataConsumer implements AsyncResponseConsumer<T> {
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51 private volatile FutureCallback<T> resultCallback;
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60 protected abstract void start(HttpResponse response, ContentType contentType) throws HttpException, IOException;
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67 protected abstract T buildResult();
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69 @Override
70 public void informationResponse(
71 final HttpResponse response,
72 final HttpContext context) throws HttpException, IOException {
73 }
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75 @Override
76 public final void consumeResponse(
77 final HttpResponse response,
78 final EntityDetails entityDetails,
79 final HttpContext context,
80 final FutureCallback<T> resultCallback) throws HttpException, IOException {
81 this.resultCallback = resultCallback;
82 if (entityDetails != null) {
83 try {
84 final ContentType contentType = ContentType.parse(entityDetails.getContentType());
85 start(response, contentType != null ? contentType : ContentType.DEFAULT_BINARY);
86 } catch (final UnsupportedCharsetException ex) {
87 throw new UnsupportedEncodingException(ex.getMessage());
88 }
89 } else {
90 start(response, null);
91 completed();
92 }
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94 }
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96 @Override
97 protected final void completed() {
98 resultCallback.completed(buildResult());
99 }
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101 @Override
102 public void failed(final Exception cause) {
103 }
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105 }