Examples of org.apache.http.impl.execchain.ClientExecChain

org.apache.http.impl.execchain.ClientExecChain
This interface represents an element in the HTTP request execution chain. Each element can either be a decorator around another element that implements a cross cutting aspect or a self-contained executor capable of producing a response for the given request.
Important: please note it is required for decorators that implement post execution aspects or response post-processing of any sort to release resources associated with the response by calling {@link CloseableHttpResponse#close()} methods in case of an I/O, protocol orruntime exception, or in case the response is not propagated to the caller.
@since 4.3

            .build();


        final ResourceFactory resourceFactory = new FileResourceFactory(cacheDir);
        final HttpCacheStorage httpCacheStorage = new ManagedHttpCacheStorage(cacheConfig);


        final ClientExecChain backend = EasyMock.createNiceMock(ClientExecChain.class);
        final HttpRequestWrapper get = HttpRequestWrapper.wrap(new HttpGet("http://somehost/"));
        final HttpClientContext context = HttpClientContext.create();
        final HttpHost target = new HttpHost("somehost");
        final HttpRoute route = new HttpRoute(target);


        context.setTargetHost(target);


        final Date now = new Date();
        final Date tenSecondsAgo = new Date(now.getTime() - 10 * 1000L);


        final HttpResponse response = new BasicHttpResponse(HttpVersion.HTTP_1_1, 200, "OK");
        response.setEntity(HttpTestUtils.makeBody(128));
        response.setHeader("Content-Length", "128");
        response.setHeader("ETag", "\"etag\"");
        response.setHeader("Cache-Control", "public, max-age=3600");
        response.setHeader("Last-Modified", DateUtils.formatDate(tenSecondsAgo));


        EasyMock.expect(backend.execute(
                EasyMock.eq(route),
                EasyMock.isA(HttpRequestWrapper.class),
                EasyMock.isA(HttpClientContext.class),
                EasyMock.<HttpExecutionAware>isNull())).andReturn(Proxies.enhanceResponse(response));
        EasyMock.replay(backend);


        final BasicHttpCache cache = new BasicHttpCache(resourceFactory, httpCacheStorage, cacheConfig);
        final ClientExecChain t = createCachingExecChain(backend, cache, cacheConfig);


        final HttpResponse response1 = t.execute(route, get, context, null);
        Assert.assertEquals(200, response1.getStatusLine().getStatusCode());
        IOUtils.consume(response1.getEntity());


        EasyMock.verify(backend);


        removeCache();


        EasyMock.reset(backend);
        EasyMock.expect(backend.execute(
                EasyMock.eq(route),
                EasyMock.isA(HttpRequestWrapper.class),
                EasyMock.isA(HttpClientContext.class),
                EasyMock.<HttpExecutionAware>isNull())).andReturn(Proxies.enhanceResponse(response));
        EasyMock.replay(backend);


        final HttpResponse response2 = t.execute(route, get, context, null);
        Assert.assertEquals(200, response2.getStatusLine().getStatusCode());
        IOUtils.consume(response2.getEntity());


        EasyMock.verify(backend);
    }

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                userAgentCopy = VersionInfo.getUserAgent("Apache-HttpClient",
                        "org.apache.http.client", getClass());
            }
        }


        ClientExecChain execChain = createMainExec(
                requestExecCopy,
                connManagerCopy,
                reuseStrategyCopy,
                keepAliveStrategyCopy,
                new ImmutableHttpProcessor(new RequestTargetHost(), new RequestUserAgent(userAgentCopy)),

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                userTokenHandler = DefaultUserTokenHandler.INSTANCE;
            } else {
                userTokenHandler = NoopUserTokenHandler.INSTANCE;
            }
        }
        ClientExecChain execChain = new MainClientExec(
                requestExec,
                connManager,
                reuseStrategy,
                keepAliveStrategy,
                targetAuthStrategy,

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                userAgentCopy = VersionInfo.getUserAgent("Apache-HttpClient",
                        "org.apache.http.client", getClass());
            }
        }


        ClientExecChain execChain = createMainExec(
                requestExecCopy,
                connManagerCopy,
                reuseStrategyCopy,
                keepAliveStrategyCopy,
                new ImmutableHttpProcessor(new RequestTargetHost(), new RequestUserAgent(userAgentCopy)),

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                userAgentCopy = VersionInfo.getUserAgent("Apache-HttpClient",
                        "org.apache.http.client", getClass());
            }
        }


        ClientExecChain execChain = createMainExec(
                requestExecCopy,
                connManagerCopy,
                reuseStrategyCopy,
                keepAliveStrategyCopy,
                new ImmutableHttpProcessor(new RequestTargetHost(), new RequestUserAgent(userAgentCopy)),

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            .build();


        final ResourceFactory resourceFactory = new FileResourceFactory(cacheDir);
        final HttpCacheStorage httpCacheStorage = new ManagedHttpCacheStorage(cacheConfig);


        final ClientExecChain backend = EasyMock.createNiceMock(ClientExecChain.class);
        final HttpRequestWrapper get = HttpRequestWrapper.wrap(new HttpGet("http://somehost/"));
        final HttpClientContext context = HttpClientContext.create();
        final HttpHost target = new HttpHost("somehost");
        final HttpRoute route = new HttpRoute(target);


        final Date now = new Date();
        final Date tenSecondsAgo = new Date(now.getTime() - 10 * 1000L);


        final HttpResponse response = new BasicHttpResponse(HttpVersion.HTTP_1_1, 200, "OK");
        response.setEntity(HttpTestUtils.makeBody(128));
        response.setHeader("Content-Length", "128");
        response.setHeader("ETag", "\"etag\"");
        response.setHeader("Cache-Control", "public, max-age=3600");
        response.setHeader("Last-Modified", DateUtils.formatDate(tenSecondsAgo));


        EasyMock.expect(backend.execute(
                EasyMock.eq(route),
                EasyMock.isA(HttpRequestWrapper.class),
                EasyMock.same(context),
                EasyMock.<HttpExecutionAware>isNull())).andReturn(Proxies.enhanceResponse(response));
        EasyMock.replay(backend);


        final BasicHttpCache cache = new BasicHttpCache(resourceFactory, httpCacheStorage, cacheConfig);
        final CachingExec t = new CachingExec(backend, cache, cacheConfig);


        final HttpResponse response1 = t.execute(route, get, context, null);
        Assert.assertEquals(200, response1.getStatusLine().getStatusCode());
        EntityUtils.consume(response1.getEntity());


        EasyMock.verify(backend);


        removeCache();


        EasyMock.reset(backend);
        EasyMock.expect(backend.execute(
                EasyMock.eq(route),
                EasyMock.isA(HttpRequestWrapper.class),
                EasyMock.same(context),
                EasyMock.<HttpExecutionAware>isNull())).andReturn(Proxies.enhanceResponse(response));
        EasyMock.replay(backend);

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    private void verifyMocks() {
        EasyMock.verify(mockExecutor);
    }


    private AsynchronousValidationRequest createAsynchronousValidationRequest(final int errorCount) {
        final ClientExecChain clientExecChain = EasyMock.createNiceMock(ClientExecChain.class);
        final CachingExec cachingHttpClient = new CachingExec(clientExecChain);
        final AsynchronousValidator mockValidator = new AsynchronousValidator(impl);
        final HttpRoute httpRoute = new HttpRoute(new HttpHost("foo.example.com"));
        final HttpRequestWrapper httpRequestWrapper = HttpRequestWrapper.wrap(new BasicHttpRequest("GET", "/"));
        final HttpClientContext httpClientContext = new HttpClientContext();

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                userTokenHandler = DefaultUserTokenHandler.INSTANCE;
            } else {
                userTokenHandler = NoopUserTokenHandler.INSTANCE;
            }
        }
        ClientExecChain execChain = new MainClientExec(
                requestExec,
                connManager,
                reuseStrategy,
                keepAliveStrategy,
                targetAuthStrategy,

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        SchemePortResolver schemePortResolver = this.schemePortResolver;
        if (schemePortResolver == null) {
            schemePortResolver = DefaultSchemePortResolver.INSTANCE;
        }


        ClientExecChain execChain = new MainClientExec(
                requestExec,
                connManager,
                reuseStrategy,
                keepAliveStrategy,
                targetAuthStrategy,

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            .build();


        final ResourceFactory resourceFactory = new FileResourceFactory(cacheDir);
        final HttpCacheStorage httpCacheStorage = new ManagedHttpCacheStorage(cacheConfig);


        final ClientExecChain backend = EasyMock.createNiceMock(ClientExecChain.class);
        final HttpRequestWrapper get = HttpRequestWrapper.wrap(new HttpGet("http://somehost/"));
        final HttpClientContext context = HttpClientContext.create();
        final HttpHost target = new HttpHost("somehost");
        final HttpRoute route = new HttpRoute(target);


        final Date now = new Date();
        final Date tenSecondsAgo = new Date(now.getTime() - 10 * 1000L);


        final HttpResponse response = new BasicHttpResponse(HttpVersion.HTTP_1_1, 200, "OK");
        response.setEntity(HttpTestUtils.makeBody(128));
        response.setHeader("Content-Length", "128");
        response.setHeader("ETag", "\"etag\"");
        response.setHeader("Cache-Control", "public, max-age=3600");
        response.setHeader("Last-Modified", DateUtils.formatDate(tenSecondsAgo));


        EasyMock.expect(backend.execute(
                EasyMock.eq(route),
                EasyMock.isA(HttpRequestWrapper.class),
                EasyMock.same(context),
                EasyMock.<HttpExecutionAware>isNull())).andReturn(Proxies.enhanceResponse(response));
        EasyMock.replay(backend);


        final BasicHttpCache cache = new BasicHttpCache(resourceFactory, httpCacheStorage, cacheConfig);
        final ClientExecChain t = createCachingExecChain(backend, cache, cacheConfig);


        final HttpResponse response1 = t.execute(route, get, context, null);
        Assert.assertEquals(200, response1.getStatusLine().getStatusCode());
        EntityUtils.consume(response1.getEntity());


        EasyMock.verify(backend);


        removeCache();


        EasyMock.reset(backend);
        EasyMock.expect(backend.execute(
                EasyMock.eq(route),
                EasyMock.isA(HttpRequestWrapper.class),
                EasyMock.same(context),
                EasyMock.<HttpExecutionAware>isNull())).andReturn(Proxies.enhanceResponse(response));
        EasyMock.replay(backend);


        final HttpResponse response2 = t.execute(route, get, context, null);
        Assert.assertEquals(200, response2.getStatusLine().getStatusCode());
        EntityUtils.consume(response2.getEntity());


        EasyMock.verify(backend);
    }

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