List of usage examples for org.apache.http.protocol HttpCoreContext getConnection
public <T extends HttpConnection> T getConnection(Class<T> cls)
From source file:hello.MyPostHTTP.java
@Override public void onTrigger(final ProcessContext context, final ProcessSession session) { final RequestConfig.Builder requestConfigBuilder = RequestConfig.custom(); requestConfigBuilder.setConnectionRequestTimeout( context.getProperty(DATA_TIMEOUT).asTimePeriod(TimeUnit.MILLISECONDS).intValue()); requestConfigBuilder.setConnectTimeout( context.getProperty(CONNECTION_TIMEOUT).asTimePeriod(TimeUnit.MILLISECONDS).intValue()); requestConfigBuilder.setRedirectsEnabled(false); requestConfigBuilder/*from w ww. j a v a 2s . c o m*/ .setSocketTimeout(context.getProperty(DATA_TIMEOUT).asTimePeriod(TimeUnit.MILLISECONDS).intValue()); final RequestConfig requestConfig = requestConfigBuilder.build(); final StreamThrottler throttler = throttlerRef.get(); final ProcessorLog logger = getLogger(); String lastUrl = null; long bytesToSend = 0L; final List<FlowFile> toSend = new ArrayList<>(); CloseableHttpClient client = null; final String transactionId = UUID.randomUUID().toString(); final ObjectHolder<String> dnHolder = new ObjectHolder<>("none"); while (true) { FlowFile flowFile = session.get(); if (flowFile == null) { break; } final String url = context.getProperty(URL).evaluateAttributeExpressions(flowFile).getValue(); try { new java.net.URL(url); } catch (final MalformedURLException e) { logger.error( "After substituting attribute values for {}, URL is {}; this is not a valid URL, so routing to failure", new Object[] { flowFile, url }); flowFile = session.penalize(flowFile); session.transfer(flowFile, REL_FAILURE); continue; } // If this FlowFile doesn't have the same url, throw it back on the queue and stop grabbing FlowFiles if (lastUrl != null && !lastUrl.equals(url)) { session.transfer(flowFile); break; } lastUrl = url; toSend.add(flowFile); if (client == null) { final Config config = getConfig(url, context); final HttpClientConnectionManager conMan = config.getConnectionManager(); final HttpClientBuilder clientBuilder = HttpClientBuilder.create(); clientBuilder.setConnectionManager(conMan); clientBuilder.addInterceptorFirst(new HttpResponseInterceptor() { @Override public void process(final HttpResponse response, final HttpContext httpContext) throws HttpException, IOException { final HttpCoreContext coreContext = HttpCoreContext.adapt(httpContext); final ManagedHttpClientConnection conn = coreContext .getConnection(ManagedHttpClientConnection.class); if (!conn.isOpen()) { return; } final SSLSession sslSession = conn.getSSLSession(); if (sslSession != null) { final X509Certificate[] certChain = sslSession.getPeerCertificateChain(); if (certChain == null || certChain.length == 0) { throw new SSLPeerUnverifiedException("No certificates found"); } final X509Certificate cert = certChain[0]; dnHolder.set(cert.getSubjectDN().getName().trim()); } } }); clientBuilder.disableAutomaticRetries(); clientBuilder.disableContentCompression(); client = clientBuilder.build(); } bytesToSend += flowFile.getSize(); break; } if (toSend.isEmpty()) { return; } final String url = lastUrl; final HttpPost post = new HttpPost(url); final List<FlowFile> flowFileList = toSend; String userName = "Chris"; String password = "password"; final MultipartEntityBuilder builder = MultipartEntityBuilder.create(); builder.addTextBody("userName", userName); builder.addTextBody("password", password); for (final FlowFile flowFile : flowFileList) { session.read(flowFile, new InputStreamCallback() { @Override public void process(final InputStream rawIn) throws IOException { InputStream in = new ByteArrayInputStream(IOUtils.toByteArray(rawIn)); builder.addBinaryBody("file", in, ContentType.DEFAULT_BINARY, "filename"); } }); } final HttpEntity entity2 = builder.build(); post.setEntity(entity2); post.setConfig(requestConfig); final String contentType; contentType = DEFAULT_CONTENT_TYPE; post.setHeader(CONTENT_TYPE_HEADER, contentType); post.setHeader(FLOWFILE_CONFIRMATION_HEADER, "true"); post.setHeader(PROTOCOL_VERSION_HEADER, PROTOCOL_VERSION); post.setHeader(TRANSACTION_ID_HEADER, transactionId); // Do the actual POST final String flowFileDescription = toSend.size() <= 10 ? toSend.toString() : toSend.size() + " FlowFiles"; final String uploadDataRate; final long uploadMillis; CloseableHttpResponse response = null; try { final StopWatch stopWatch = new StopWatch(true); response = client.execute(post); // consume input stream entirely, ignoring its contents. If we // don't do this, the Connection will not be returned to the pool EntityUtils.consume(response.getEntity()); stopWatch.stop(); uploadDataRate = stopWatch.calculateDataRate(bytesToSend); uploadMillis = stopWatch.getDuration(TimeUnit.MILLISECONDS); } catch (final IOException e) { logger.error("Failed to Post {} due to {}; transferring to failure", new Object[] { flowFileDescription, e }); context.yield(); for (FlowFile flowFile : toSend) { flowFile = session.penalize(flowFile); session.transfer(flowFile, REL_FAILURE); } return; } finally { if (response != null) { try { response.close(); } catch (final IOException e) { getLogger().warn("Failed to close HTTP Response due to {}", new Object[] { e }); } } } // If we get a 'SEE OTHER' status code and an HTTP header that indicates that the intent // of the Location URI is a flowfile hold, we will store this holdUri. This prevents us // from posting to some other webservice and then attempting to delete some resource to which // we are redirected final int responseCode = response.getStatusLine().getStatusCode(); final String responseReason = response.getStatusLine().getReasonPhrase(); String holdUri = null; if (responseCode == HttpServletResponse.SC_SEE_OTHER) { final Header locationUriHeader = response.getFirstHeader(LOCATION_URI_INTENT_NAME); if (locationUriHeader != null) { if (LOCATION_URI_INTENT_VALUE.equals(locationUriHeader.getValue())) { final Header holdUriHeader = response.getFirstHeader(LOCATION_HEADER_NAME); if (holdUriHeader != null) { holdUri = holdUriHeader.getValue(); } } } if (holdUri == null) { for (FlowFile flowFile : toSend) { flowFile = session.penalize(flowFile); logger.error( "Failed to Post {} to {}: sent content and received status code {}:{} but no Hold URI", new Object[] { flowFile, url, responseCode, responseReason }); session.transfer(flowFile, REL_FAILURE); } return; } } if (holdUri == null) { if (responseCode == HttpServletResponse.SC_SERVICE_UNAVAILABLE) { for (FlowFile flowFile : toSend) { flowFile = session.penalize(flowFile); logger.error( "Failed to Post {} to {}: response code was {}:{}; will yield processing, " + "since the destination is temporarily unavailable", new Object[] { flowFile, url, responseCode, responseReason }); session.transfer(flowFile, REL_FAILURE); } context.yield(); return; } if (responseCode >= 300) { for (FlowFile flowFile : toSend) { flowFile = session.penalize(flowFile); logger.error("Failed to Post {} to {}: response code was {}:{}", new Object[] { flowFile, url, responseCode, responseReason }); session.transfer(flowFile, REL_FAILURE); } return; } logger.info("Successfully Posted {} to {} in {} at a rate of {}", new Object[] { flowFileDescription, url, FormatUtils.formatMinutesSeconds(uploadMillis, TimeUnit.MILLISECONDS), uploadDataRate }); for (final FlowFile flowFile : toSend) { session.getProvenanceReporter().send(flowFile, url, "Remote DN=" + dnHolder.get(), uploadMillis, true); session.transfer(flowFile, REL_SUCCESS); } return; } // // the response indicated a Hold URI; delete the Hold. // // determine the full URI of the Flow File's Hold; Unfortunately, the responses that are returned have // changed over the past, so we have to take into account a few different possibilities. String fullHoldUri = holdUri; if (holdUri.startsWith("/contentListener")) { // If the Hold URI that we get starts with /contentListener, it may not really be /contentListener, // as this really indicates that it should be whatever we posted to -- if posting directly to the // ListenHTTP component, it will be /contentListener, but if posting to a proxy/load balancer, we may // be posting to some other URL. fullHoldUri = url + holdUri.substring(16); } else if (holdUri.startsWith("/")) { // URL indicates the full path but not hostname or port; use the same hostname & port that we posted // to but use the full path indicated by the response. int firstSlash = url.indexOf("/", 8); if (firstSlash < 0) { firstSlash = url.length(); } final String beforeSlash = url.substring(0, firstSlash); fullHoldUri = beforeSlash + holdUri; } else if (!holdUri.startsWith("http")) { // Absolute URL fullHoldUri = url + (url.endsWith("/") ? "" : "/") + holdUri; } final HttpDelete delete = new HttpDelete(fullHoldUri); delete.setHeader(TRANSACTION_ID_HEADER, transactionId); while (true) { try { final HttpResponse holdResponse = client.execute(delete); EntityUtils.consume(holdResponse.getEntity()); final int holdStatusCode = holdResponse.getStatusLine().getStatusCode(); final String holdReason = holdResponse.getStatusLine().getReasonPhrase(); if (holdStatusCode >= 300) { logger.error( "Failed to delete Hold that destination placed on {}: got response code {}:{}; routing to failure", new Object[] { flowFileDescription, holdStatusCode, holdReason }); for (FlowFile flowFile : toSend) { flowFile = session.penalize(flowFile); session.transfer(flowFile, REL_FAILURE); } return; } logger.info("Successfully Posted {} to {} in {} milliseconds at a rate of {}", new Object[] { flowFileDescription, url, uploadMillis, uploadDataRate }); for (final FlowFile flowFile : toSend) { session.getProvenanceReporter().send(flowFile, url); session.transfer(flowFile, REL_SUCCESS); } return; } catch (final IOException e) { logger.warn("Failed to delete Hold that destination placed on {} due to {}", new Object[] { flowFileDescription, e }); } if (!isScheduled()) { context.yield(); logger.warn( "Failed to delete Hold that destination placed on {}; Processor has been stopped so routing FlowFile(s) to failure", new Object[] { flowFileDescription }); for (FlowFile flowFile : toSend) { flowFile = session.penalize(flowFile); session.transfer(flowFile, REL_FAILURE); } return; } } }
From source file:com.cognitivemedicine.nifi.http.PostHTTP2.java
@Override public void onTrigger(final ProcessContext context, final ProcessSession session) { final boolean sendAsFlowFile = context.getProperty(SEND_AS_FLOWFILE).asBoolean(); final int compressionLevel = context.getProperty(COMPRESSION_LEVEL).asInteger(); final String userAgent = context.getProperty(USER_AGENT).getValue(); final RequestConfig.Builder requestConfigBuilder = RequestConfig.custom(); requestConfigBuilder.setConnectionRequestTimeout( context.getProperty(DATA_TIMEOUT).asTimePeriod(TimeUnit.MILLISECONDS).intValue()); requestConfigBuilder.setConnectTimeout( context.getProperty(CONNECTION_TIMEOUT).asTimePeriod(TimeUnit.MILLISECONDS).intValue()); requestConfigBuilder.setRedirectsEnabled(false); requestConfigBuilder// w w w. ja va 2s . c om .setSocketTimeout(context.getProperty(DATA_TIMEOUT).asTimePeriod(TimeUnit.MILLISECONDS).intValue()); final RequestConfig requestConfig = requestConfigBuilder.build(); final StreamThrottler throttler = throttlerRef.get(); final ProcessorLog logger = getLogger(); final Double maxBatchBytes = context.getProperty(MAX_BATCH_SIZE).asDataSize(DataUnit.B); String lastUrl = null; long bytesToSend = 0L; final List<FlowFile> toSend = new ArrayList<>(); DestinationAccepts destinationAccepts = null; CloseableHttpClient client = null; final String transactionId = UUID.randomUUID().toString(); final ObjectHolder<String> dnHolder = new ObjectHolder<>("none"); while (true) { FlowFile flowFile = session.get(); if (flowFile == null) { break; } final String url = context.getProperty(URL).evaluateAttributeExpressions(flowFile).getValue(); try { new java.net.URL(url); } catch (final MalformedURLException e) { logger.error( "After substituting attribute values for {}, URL is {}; this is not a valid URL, so routing to failure", new Object[] { flowFile, url }); flowFile = session.penalize(flowFile); session.transfer(flowFile, REL_FAILURE); continue; } // If this FlowFile doesn't have the same url, throw it back on the queue and stop grabbing FlowFiles if (lastUrl != null && !lastUrl.equals(url)) { session.transfer(flowFile); break; } lastUrl = url; toSend.add(flowFile); if (client == null || destinationAccepts == null) { final Config config = getConfig(url, context); final HttpClientConnectionManager conMan = config.getConnectionManager(); final HttpClientBuilder clientBuilder = HttpClientBuilder.create(); clientBuilder.setConnectionManager(conMan); clientBuilder.setUserAgent(userAgent); clientBuilder.addInterceptorFirst(new HttpResponseInterceptor() { @Override public void process(final HttpResponse response, final HttpContext httpContext) throws HttpException, IOException { HttpCoreContext coreContext = HttpCoreContext.adapt(httpContext); ManagedHttpClientConnection conn = coreContext .getConnection(ManagedHttpClientConnection.class); if (!conn.isOpen()) { return; } SSLSession sslSession = conn.getSSLSession(); if (sslSession != null) { final X509Certificate[] certChain = sslSession.getPeerCertificateChain(); if (certChain == null || certChain.length == 0) { throw new SSLPeerUnverifiedException("No certificates found"); } final X509Certificate cert = certChain[0]; dnHolder.set(cert.getSubjectDN().getName().trim()); } } }); clientBuilder.disableAutomaticRetries(); clientBuilder.disableContentCompression(); final String username = context.getProperty(USERNAME).getValue(); final String password = context.getProperty(PASSWORD).getValue(); // set the credentials if appropriate if (username != null) { final CredentialsProvider credentialsProvider = new BasicCredentialsProvider(); if (password == null) { credentialsProvider.setCredentials(AuthScope.ANY, new UsernamePasswordCredentials(username)); } else { credentialsProvider.setCredentials(AuthScope.ANY, new UsernamePasswordCredentials(username, password)); } ; clientBuilder.setDefaultCredentialsProvider(credentialsProvider); } client = clientBuilder.build(); // determine whether or not destination accepts flowfile/gzip destinationAccepts = config.getDestinationAccepts(); if (destinationAccepts == null) { try { if (sendAsFlowFile) { destinationAccepts = getDestinationAcceptance(client, url, getLogger(), transactionId); } else { destinationAccepts = new DestinationAccepts(false, false, false, false, null); } config.setDestinationAccepts(destinationAccepts); } catch (IOException e) { flowFile = session.penalize(flowFile); session.transfer(flowFile, REL_FAILURE); logger.error( "Unable to communicate with destination {} to determine whether or not it can accept flowfiles/gzip; routing {} to failure due to {}", new Object[] { url, flowFile, e }); context.yield(); return; } } } // if we are not sending as flowfile, or if the destination doesn't accept V3 or V2 (streaming) format, // then only use a single FlowFile if (!sendAsFlowFile || (!destinationAccepts.isFlowFileV3Accepted() && !destinationAccepts.isFlowFileV2Accepted())) { break; } bytesToSend += flowFile.getSize(); if (bytesToSend > maxBatchBytes.longValue()) { break; } } if (toSend.isEmpty()) { return; } final String url = lastUrl; final HttpPost post = new HttpPost(url); final List<FlowFile> flowFileList = toSend; final DestinationAccepts accepts = destinationAccepts; final boolean isDestinationLegacyNiFi = accepts.getProtocolVersion() == null; final EntityTemplate entity = new EntityTemplate(new ContentProducer() { @Override public void writeTo(final OutputStream rawOut) throws IOException { final OutputStream throttled = (throttler == null) ? rawOut : throttler.newThrottledOutputStream(rawOut); OutputStream wrappedOut = new BufferedOutputStream(throttled); if (compressionLevel > 0 && accepts.isGzipAccepted()) { wrappedOut = new GZIPOutputStream(wrappedOut, compressionLevel); } try (final OutputStream out = wrappedOut) { for (final FlowFile flowFile : flowFileList) { session.read(flowFile, new InputStreamCallback() { @Override public void process(final InputStream rawIn) throws IOException { try (final InputStream in = new BufferedInputStream(rawIn)) { FlowFilePackager packager = null; if (!sendAsFlowFile) { packager = null; } else if (accepts.isFlowFileV3Accepted()) { packager = new FlowFilePackagerV3(); } else if (accepts.isFlowFileV2Accepted()) { packager = new FlowFilePackagerV2(); } else if (accepts.isFlowFileV1Accepted()) { packager = new FlowFilePackagerV1(); } // if none of the above conditions is met, we should never get here, because // we will have already verified that at least 1 of the FlowFile packaging // formats is acceptable if sending as FlowFile. if (packager == null) { StreamUtils.copy(in, out); } else { final Map<String, String> flowFileAttributes; if (isDestinationLegacyNiFi) { // Old versions of NiFi expect nf.file.name and nf.file.path to indicate filename & path; // in order to maintain backward compatibility, we copy the filename & path to those attribute keys. flowFileAttributes = new HashMap<>(flowFile.getAttributes()); flowFileAttributes.put("nf.file.name", flowFile.getAttribute(CoreAttributes.FILENAME.key())); flowFileAttributes.put("nf.file.path", flowFile.getAttribute(CoreAttributes.PATH.key())); } else { flowFileAttributes = flowFile.getAttributes(); } packager.packageFlowFile(in, out, flowFileAttributes, flowFile.getSize()); } } } }); } out.flush(); } } }); entity.setChunked(context.getProperty(CHUNKED_ENCODING).asBoolean()); post.setEntity(entity); post.setConfig(requestConfig); final String contentType; if (sendAsFlowFile) { if (accepts.isFlowFileV3Accepted()) { contentType = APPLICATION_FLOW_FILE_V3; } else if (accepts.isFlowFileV2Accepted()) { contentType = APPLICATION_FLOW_FILE_V2; } else if (accepts.isFlowFileV1Accepted()) { contentType = APPLICATION_FLOW_FILE_V1; } else { logger.error( "Cannot send data to {} because the destination does not accept FlowFiles and this processor is configured to deliver FlowFiles; rolling back session", new Object[] { url }); session.rollback(); context.yield(); return; } } else { final String attributeValue = toSend.get(0).getAttribute(CoreAttributes.MIME_TYPE.key()); contentType = (attributeValue == null) ? DEFAULT_CONTENT_TYPE : attributeValue; } final String attributeHeaderRegex = context.getProperty(ATTRIBUTES_AS_HEADERS_REGEX).getValue(); if (attributeHeaderRegex != null && !sendAsFlowFile && flowFileList.size() == 1) { final Pattern pattern = Pattern.compile(attributeHeaderRegex); final Map<String, String> attributes = flowFileList.get(0).getAttributes(); for (final Map.Entry<String, String> entry : attributes.entrySet()) { final String key = entry.getKey(); if (pattern.matcher(key).matches()) { post.setHeader(entry.getKey(), entry.getValue()); } } } post.setHeader(CONTENT_TYPE, contentType); post.setHeader(FLOWFILE_CONFIRMATION_HEADER, "true"); post.setHeader(PROTOCOL_VERSION_HEADER, PROTOCOL_VERSION); post.setHeader(TRANSACTION_ID_HEADER, transactionId); if (compressionLevel > 0 && accepts.isGzipAccepted()) { post.setHeader(GZIPPED_HEADER, "true"); } // Do the actual POST final String flowFileDescription = toSend.size() <= 10 ? toSend.toString() : toSend.size() + " FlowFiles"; final String uploadDataRate; final long uploadMillis; CloseableHttpResponse response = null; try { final StopWatch stopWatch = new StopWatch(true); response = client.execute(post); // consume input stream entirely, ignoring its contents. If we // don't do this, the Connection will not be returned to the pool EntityUtils.consume(response.getEntity()); stopWatch.stop(); uploadDataRate = stopWatch.calculateDataRate(bytesToSend); uploadMillis = stopWatch.getDuration(TimeUnit.MILLISECONDS); } catch (final IOException e) { logger.error("Failed to Post {} due to {}; transferring to failure", new Object[] { flowFileDescription, e }); context.yield(); for (FlowFile flowFile : toSend) { flowFile = session.penalize(flowFile); session.transfer(flowFile, REL_FAILURE); } return; } finally { if (response != null) { try { response.close(); } catch (IOException e) { getLogger().warn("Failed to close HTTP Response due to {}", new Object[] { e }); } } } // If we get a 'SEE OTHER' status code and an HTTP header that indicates that the intent // of the Location URI is a flowfile hold, we will store this holdUri. This prevents us // from posting to some other webservice and then attempting to delete some resource to which // we are redirected final int responseCode = response.getStatusLine().getStatusCode(); final String responseReason = response.getStatusLine().getReasonPhrase(); String holdUri = null; if (responseCode == HttpServletResponse.SC_SEE_OTHER) { final Header locationUriHeader = response.getFirstHeader(LOCATION_URI_INTENT_NAME); if (locationUriHeader != null) { if (LOCATION_URI_INTENT_VALUE.equals(locationUriHeader.getValue())) { final Header holdUriHeader = response.getFirstHeader(LOCATION_HEADER_NAME); if (holdUriHeader != null) { holdUri = holdUriHeader.getValue(); } } } if (holdUri == null) { for (FlowFile flowFile : toSend) { flowFile = session.penalize(flowFile); logger.error( "Failed to Post {} to {}: sent content and received status code {}:{} but no Hold URI", new Object[] { flowFile, url, responseCode, responseReason }); session.transfer(flowFile, REL_FAILURE); } return; } } if (holdUri == null) { if (responseCode == HttpServletResponse.SC_SERVICE_UNAVAILABLE) { for (FlowFile flowFile : toSend) { flowFile = session.penalize(flowFile); logger.error( "Failed to Post {} to {}: response code was {}:{}; will yield processing, since the destination is temporarily unavailable", new Object[] { flowFile, url, responseCode, responseReason }); session.transfer(flowFile, REL_FAILURE); } context.yield(); return; } if (responseCode >= 300) { for (FlowFile flowFile : toSend) { flowFile = session.penalize(flowFile); logger.error("Failed to Post {} to {}: response code was {}:{}", new Object[] { flowFile, url, responseCode, responseReason }); session.transfer(flowFile, REL_FAILURE); } return; } logger.info("Successfully Posted {} to {} in {} at a rate of {}", new Object[] { flowFileDescription, url, FormatUtils.formatMinutesSeconds(uploadMillis, TimeUnit.MILLISECONDS), uploadDataRate }); for (final FlowFile flowFile : toSend) { session.getProvenanceReporter().send(flowFile, url, "Remote DN=" + dnHolder.get(), uploadMillis, true); session.transfer(flowFile, REL_SUCCESS); } return; } // // the response indicated a Hold URI; delete the Hold. // // determine the full URI of the Flow File's Hold; Unfortunately, the responses that are returned have // changed over the past, so we have to take into account a few different possibilities. String fullHoldUri = holdUri; if (holdUri.startsWith("/contentListener")) { // If the Hold URI that we get starts with /contentListener, it may not really be /contentListener, // as this really indicates that it should be whatever we posted to -- if posting directly to the // ListenHTTP component, it will be /contentListener, but if posting to a proxy/load balancer, we may // be posting to some other URL. fullHoldUri = url + holdUri.substring(16); } else if (holdUri.startsWith("/")) { // URL indicates the full path but not hostname or port; use the same hostname & port that we posted // to but use the full path indicated by the response. int firstSlash = url.indexOf("/", 8); if (firstSlash < 0) { firstSlash = url.length(); } final String beforeSlash = url.substring(0, firstSlash); fullHoldUri = beforeSlash + holdUri; } else if (!holdUri.startsWith("http")) { // Absolute URL fullHoldUri = url + (url.endsWith("/") ? "" : "/") + holdUri; } final HttpDelete delete = new HttpDelete(fullHoldUri); delete.setHeader(TRANSACTION_ID_HEADER, transactionId); while (true) { try { final HttpResponse holdResponse = client.execute(delete); EntityUtils.consume(holdResponse.getEntity()); final int holdStatusCode = holdResponse.getStatusLine().getStatusCode(); final String holdReason = holdResponse.getStatusLine().getReasonPhrase(); if (holdStatusCode >= 300) { logger.error( "Failed to delete Hold that destination placed on {}: got response code {}:{}; routing to failure", new Object[] { flowFileDescription, holdStatusCode, holdReason }); for (FlowFile flowFile : toSend) { flowFile = session.penalize(flowFile); session.transfer(flowFile, REL_FAILURE); } return; } logger.info("Successfully Posted {} to {} in {} milliseconds at a rate of {}", new Object[] { flowFileDescription, url, uploadMillis, uploadDataRate }); for (FlowFile flowFile : toSend) { session.getProvenanceReporter().send(flowFile, url); session.transfer(flowFile, REL_SUCCESS); } return; } catch (final IOException e) { logger.warn("Failed to delete Hold that destination placed on {} due to {}", new Object[] { flowFileDescription, e }); } if (!isScheduled()) { context.yield(); logger.warn( "Failed to delete Hold that destination placed on {}; Processor has been stopped so routing FlowFile(s) to failure", new Object[] { flowFileDescription }); for (FlowFile flowFile : toSend) { flowFile = session.penalize(flowFile); session.transfer(flowFile, REL_FAILURE); } return; } } }
From source file:com.cognitivemedicine.nifi.http.PostAdvancedHTTP.java
@Override public void onTrigger(final ProcessContext context, final ProcessSession session) { final boolean sendAsFlowFile = context.getProperty(SEND_AS_FLOWFILE).asBoolean(); final int compressionLevel = context.getProperty(COMPRESSION_LEVEL).asInteger(); final String userAgent = context.getProperty(USER_AGENT).getValue(); final RequestConfig.Builder requestConfigBuilder = RequestConfig.custom(); requestConfigBuilder.setConnectionRequestTimeout( context.getProperty(DATA_TIMEOUT).asTimePeriod(TimeUnit.MILLISECONDS).intValue()); requestConfigBuilder.setConnectTimeout( context.getProperty(CONNECTION_TIMEOUT).asTimePeriod(TimeUnit.MILLISECONDS).intValue()); requestConfigBuilder.setRedirectsEnabled(false); requestConfigBuilder/* w w w .j a v a2 s . c o m*/ .setSocketTimeout(context.getProperty(DATA_TIMEOUT).asTimePeriod(TimeUnit.MILLISECONDS).intValue()); final RequestConfig requestConfig = requestConfigBuilder.build(); final StreamThrottler throttler = throttlerRef.get(); final ProcessorLog logger = getLogger(); final Double maxBatchBytes = context.getProperty(MAX_BATCH_SIZE).asDataSize(DataUnit.B); String lastUrl = null; long bytesToSend = 0L; final List<FlowFile> toSend = new ArrayList<>(); DestinationAccepts destinationAccepts = null; CloseableHttpClient client = null; final String transactionId = UUID.randomUUID().toString(); final ObjectHolder<String> dnHolder = new ObjectHolder<>("none"); while (true) { FlowFile flowFile = session.get(); if (flowFile == null) { break; } final String url = context.getProperty(URL).evaluateAttributeExpressions(flowFile).getValue(); try { new java.net.URL(url); } catch (final MalformedURLException e) { logger.error( "After substituting attribute values for {}, URL is {}; this is not a valid URL, so routing to failure", new Object[] { flowFile, url }); flowFile = session.penalize(flowFile); session.transfer(flowFile, REL_FAILURE); continue; } // If this FlowFile doesn't have the same url, throw it back on the queue and stop grabbing FlowFiles if (lastUrl != null && !lastUrl.equals(url)) { session.transfer(flowFile); break; } lastUrl = url; toSend.add(flowFile); if (client == null || destinationAccepts == null) { final Config config = getConfig(url, context); final HttpClientConnectionManager conMan = config.getConnectionManager(); final HttpClientBuilder clientBuilder = HttpClientBuilder.create(); clientBuilder.setConnectionManager(conMan); clientBuilder.setUserAgent(userAgent); clientBuilder.addInterceptorFirst(new HttpResponseInterceptor() { @Override public void process(final HttpResponse response, final HttpContext httpContext) throws HttpException, IOException { HttpCoreContext coreContext = HttpCoreContext.adapt(httpContext); ManagedHttpClientConnection conn = coreContext .getConnection(ManagedHttpClientConnection.class); if (!conn.isOpen()) { return; } SSLSession sslSession = conn.getSSLSession(); if (sslSession != null) { final X509Certificate[] certChain = sslSession.getPeerCertificateChain(); if (certChain == null || certChain.length == 0) { throw new SSLPeerUnverifiedException("No certificates found"); } final X509Certificate cert = certChain[0]; dnHolder.set(cert.getSubjectDN().getName().trim()); } } }); clientBuilder.disableAutomaticRetries(); clientBuilder.disableContentCompression(); final String username = context.getProperty(USERNAME).getValue(); final String password = context.getProperty(PASSWORD).getValue(); // set the credentials if appropriate if (username != null) { final CredentialsProvider credentialsProvider = new BasicCredentialsProvider(); if (password == null) { credentialsProvider.setCredentials(AuthScope.ANY, new UsernamePasswordCredentials(username)); } else { credentialsProvider.setCredentials(AuthScope.ANY, new UsernamePasswordCredentials(username, password)); } ; clientBuilder.setDefaultCredentialsProvider(credentialsProvider); } client = clientBuilder.build(); // determine whether or not destination accepts flowfile/gzip destinationAccepts = config.getDestinationAccepts(); if (destinationAccepts == null) { try { if (sendAsFlowFile) { destinationAccepts = getDestinationAcceptance(client, url, getLogger(), transactionId); } else { destinationAccepts = new DestinationAccepts(false, false, false, false, null); } config.setDestinationAccepts(destinationAccepts); } catch (IOException e) { flowFile = session.penalize(flowFile); session.transfer(flowFile, REL_FAILURE); logger.error( "Unable to communicate with destination {} to determine whether or not it can accept flowfiles/gzip; routing {} to failure due to {}", new Object[] { url, flowFile, e }); context.yield(); return; } } } // if we are not sending as flowfile, or if the destination doesn't accept V3 or V2 (streaming) format, // then only use a single FlowFile if (!sendAsFlowFile || (!destinationAccepts.isFlowFileV3Accepted() && !destinationAccepts.isFlowFileV2Accepted())) { break; } bytesToSend += flowFile.getSize(); if (bytesToSend > maxBatchBytes.longValue()) { break; } } if (toSend.isEmpty()) { return; } final String url = lastUrl; final HttpPost post = new HttpPost(url); final List<FlowFile> flowFileList = toSend; final DestinationAccepts accepts = destinationAccepts; final boolean isDestinationLegacyNiFi = accepts.getProtocolVersion() == null; final EntityTemplate entity = new EntityTemplate(new ContentProducer() { @Override public void writeTo(final OutputStream rawOut) throws IOException { final OutputStream throttled = (throttler == null) ? rawOut : throttler.newThrottledOutputStream(rawOut); OutputStream wrappedOut = new BufferedOutputStream(throttled); if (compressionLevel > 0 && accepts.isGzipAccepted()) { wrappedOut = new GZIPOutputStream(wrappedOut, compressionLevel); } try (final OutputStream out = wrappedOut) { for (final FlowFile flowFile : flowFileList) { session.read(flowFile, new InputStreamCallback() { @Override public void process(final InputStream rawIn) throws IOException { try (final InputStream in = new BufferedInputStream(rawIn)) { FlowFilePackager packager = null; if (!sendAsFlowFile) { packager = null; } else if (accepts.isFlowFileV3Accepted()) { packager = new FlowFilePackagerV3(); } else if (accepts.isFlowFileV2Accepted()) { packager = new FlowFilePackagerV2(); } else if (accepts.isFlowFileV1Accepted()) { packager = new FlowFilePackagerV1(); } // if none of the above conditions is met, we should never get here, because // we will have already verified that at least 1 of the FlowFile packaging // formats is acceptable if sending as FlowFile. if (packager == null) { StreamUtils.copy(in, out); } else { final Map<String, String> flowFileAttributes; if (isDestinationLegacyNiFi) { // Old versions of NiFi expect nf.file.name and nf.file.path to indicate filename & path; // in order to maintain backward compatibility, we copy the filename & path to those attribute keys. flowFileAttributes = new HashMap<>(flowFile.getAttributes()); flowFileAttributes.put("nf.file.name", flowFile.getAttribute(CoreAttributes.FILENAME.key())); flowFileAttributes.put("nf.file.path", flowFile.getAttribute(CoreAttributes.PATH.key())); } else { flowFileAttributes = flowFile.getAttributes(); } packager.packageFlowFile(in, out, flowFileAttributes, flowFile.getSize()); } } } }); } out.flush(); } } }); entity.setChunked(context.getProperty(CHUNKED_ENCODING).asBoolean()); post.setEntity(entity); post.setConfig(requestConfig); final String contentType; if (sendAsFlowFile) { if (accepts.isFlowFileV3Accepted()) { contentType = APPLICATION_FLOW_FILE_V3; } else if (accepts.isFlowFileV2Accepted()) { contentType = APPLICATION_FLOW_FILE_V2; } else if (accepts.isFlowFileV1Accepted()) { contentType = APPLICATION_FLOW_FILE_V1; } else { logger.error( "Cannot send data to {} because the destination does not accept FlowFiles and this processor is configured to deliver FlowFiles; rolling back session", new Object[] { url }); session.rollback(); context.yield(); return; } } else { final String attributeValue = toSend.get(0).getAttribute(CoreAttributes.MIME_TYPE.key()); contentType = (attributeValue == null) ? DEFAULT_CONTENT_TYPE : attributeValue; } final String attributeHeaderRegex = context.getProperty(ATTRIBUTES_AS_HEADERS_REGEX).getValue(); if (attributeHeaderRegex != null && !sendAsFlowFile && flowFileList.size() == 1) { final Pattern pattern = Pattern.compile(attributeHeaderRegex); final Map<String, String> attributes = flowFileList.get(0).getAttributes(); for (final Map.Entry<String, String> entry : attributes.entrySet()) { final String key = entry.getKey(); if (pattern.matcher(key).matches()) { post.setHeader(entry.getKey(), entry.getValue()); } } } post.setHeader(CONTENT_TYPE, contentType); post.setHeader(FLOWFILE_CONFIRMATION_HEADER, "true"); post.setHeader(PROTOCOL_VERSION_HEADER, PROTOCOL_VERSION); post.setHeader(TRANSACTION_ID_HEADER, transactionId); if (compressionLevel > 0 && accepts.isGzipAccepted()) { post.setHeader(GZIPPED_HEADER, "true"); } // Do the actual POST final String flowFileDescription = toSend.size() <= 10 ? toSend.toString() : toSend.size() + " FlowFiles"; final String uploadDataRate; final long uploadMillis; String responseContent; CloseableHttpResponse response = null; try { final StopWatch stopWatch = new StopWatch(true); response = client.execute(post); responseContent = EntityUtils.toString(response.getEntity()); stopWatch.stop(); uploadDataRate = stopWatch.calculateDataRate(bytesToSend); uploadMillis = stopWatch.getDuration(TimeUnit.MILLISECONDS); } catch (final IOException e) { logger.error("Failed to Post {} due to {}; transferring to failure", new Object[] { flowFileDescription, e }); context.yield(); for (FlowFile flowFile : toSend) { flowFile = session.penalize(flowFile); session.transfer(flowFile, REL_FAILURE); } return; } finally { if (response != null) { try { response.close(); } catch (IOException e) { getLogger().warn("Failed to close HTTP Response due to {}", new Object[] { e }); } } } // If we get a 'SEE OTHER' status code and an HTTP header that indicates that the intent // of the Location URI is a flowfile hold, we will store this holdUri. This prevents us // from posting to some other webservice and then attempting to delete some resource to which // we are redirected final int responseCode = response.getStatusLine().getStatusCode(); final String responseReason = response.getStatusLine().getReasonPhrase(); String holdUri = null; if (responseCode == HttpServletResponse.SC_SEE_OTHER) { final Header locationUriHeader = response.getFirstHeader(LOCATION_URI_INTENT_NAME); if (locationUriHeader != null) { if (LOCATION_URI_INTENT_VALUE.equals(locationUriHeader.getValue())) { final Header holdUriHeader = response.getFirstHeader(LOCATION_HEADER_NAME); if (holdUriHeader != null) { holdUri = holdUriHeader.getValue(); } } } if (holdUri == null) { for (FlowFile flowFile : toSend) { flowFile = session.penalize(flowFile); logger.error( "Failed to Post {} to {}: sent content and received status code {}:{} but no Hold URI", new Object[] { flowFile, url, responseCode, responseReason }); session.transfer(flowFile, REL_FAILURE); } return; } } if (holdUri == null) { if (responseCode == HttpServletResponse.SC_SERVICE_UNAVAILABLE) { for (FlowFile flowFile : toSend) { flowFile = session.penalize(flowFile); logger.error( "Failed to Post {} to {}: response code was {}:{}; will yield processing, since the destination is temporarily unavailable", new Object[] { flowFile, url, responseCode, responseReason }); session.transfer(flowFile, REL_FAILURE); } context.yield(); return; } if (responseCode >= 300) { for (FlowFile flowFile : toSend) { flowFile = session.penalize(flowFile); logger.error("Failed to Post {} to {}: response code was {}:{}", new Object[] { flowFile, url, responseCode, responseReason }); session.transfer(flowFile, REL_FAILURE); } return; } logger.info("Successfully Posted {} to {} in {} at a rate of {}", new Object[] { flowFileDescription, url, FormatUtils.formatMinutesSeconds(uploadMillis, TimeUnit.MILLISECONDS), uploadDataRate }); for (FlowFile flowFile : toSend) { flowFile = this.setHttpPostResponse(context, session, responseContent, flowFile); session.getProvenanceReporter().send(flowFile, url, "Remote DN=" + dnHolder.get(), uploadMillis, true); session.transfer(flowFile, REL_SUCCESS); } return; } // // the response indicated a Hold URI; delete the Hold. // // determine the full URI of the Flow File's Hold; Unfortunately, the responses that are returned have // changed over the past, so we have to take into account a few different possibilities. String fullHoldUri = holdUri; if (holdUri.startsWith("/contentListener")) { // If the Hold URI that we get starts with /contentListener, it may not really be /contentListener, // as this really indicates that it should be whatever we posted to -- if posting directly to the // ListenHTTP component, it will be /contentListener, but if posting to a proxy/load balancer, we may // be posting to some other URL. fullHoldUri = url + holdUri.substring(16); } else if (holdUri.startsWith("/")) { // URL indicates the full path but not hostname or port; use the same hostname & port that we posted // to but use the full path indicated by the response. int firstSlash = url.indexOf("/", 8); if (firstSlash < 0) { firstSlash = url.length(); } final String beforeSlash = url.substring(0, firstSlash); fullHoldUri = beforeSlash + holdUri; } else if (!holdUri.startsWith("http")) { // Absolute URL fullHoldUri = url + (url.endsWith("/") ? "" : "/") + holdUri; } final HttpDelete delete = new HttpDelete(fullHoldUri); delete.setHeader(TRANSACTION_ID_HEADER, transactionId); while (true) { try { final HttpResponse holdResponse = client.execute(delete); responseContent = EntityUtils.toString(holdResponse.getEntity()); final int holdStatusCode = holdResponse.getStatusLine().getStatusCode(); final String holdReason = holdResponse.getStatusLine().getReasonPhrase(); if (holdStatusCode >= 300) { logger.error( "Failed to delete Hold that destination placed on {}: got response code {}:{}; routing to failure", new Object[] { flowFileDescription, holdStatusCode, holdReason }); for (FlowFile flowFile : toSend) { flowFile = session.penalize(flowFile); session.transfer(flowFile, REL_FAILURE); } return; } logger.info("Successfully Posted {} to {} in {} milliseconds at a rate of {}", new Object[] { flowFileDescription, url, uploadMillis, uploadDataRate }); for (FlowFile flowFile : toSend) { flowFile = this.setHttpPostResponse(context, session, responseContent, flowFile); session.getProvenanceReporter().send(flowFile, url); session.transfer(flowFile, REL_SUCCESS); } return; } catch (final IOException e) { logger.warn("Failed to delete Hold that destination placed on {} due to {}", new Object[] { flowFileDescription, e }); } if (!isScheduled()) { context.yield(); logger.warn( "Failed to delete Hold that destination placed on {}; Processor has been stopped so routing FlowFile(s) to failure", new Object[] { flowFileDescription }); for (FlowFile flowFile : toSend) { flowFile = session.penalize(flowFile); session.transfer(flowFile, REL_FAILURE); } return; } } }
From source file:org.apache.nifi.processors.standard.PostHTTP.java
@Override public void onTrigger(final ProcessContext context, final ProcessSession session) { final boolean sendAsFlowFile = context.getProperty(SEND_AS_FLOWFILE).asBoolean(); final int compressionLevel = context.getProperty(COMPRESSION_LEVEL).asInteger(); final String userAgent = context.getProperty(USER_AGENT).getValue(); final RequestConfig.Builder requestConfigBuilder = RequestConfig.custom(); requestConfigBuilder.setConnectionRequestTimeout( context.getProperty(DATA_TIMEOUT).asTimePeriod(TimeUnit.MILLISECONDS).intValue()); requestConfigBuilder.setConnectTimeout( context.getProperty(CONNECTION_TIMEOUT).asTimePeriod(TimeUnit.MILLISECONDS).intValue()); requestConfigBuilder.setRedirectsEnabled(false); requestConfigBuilder/* w ww . j a v a2s . c o m*/ .setSocketTimeout(context.getProperty(DATA_TIMEOUT).asTimePeriod(TimeUnit.MILLISECONDS).intValue()); final RequestConfig requestConfig = requestConfigBuilder.build(); final StreamThrottler throttler = throttlerRef.get(); final ComponentLog logger = getLogger(); final Double maxBatchBytes = context.getProperty(MAX_BATCH_SIZE).asDataSize(DataUnit.B); String lastUrl = null; long bytesToSend = 0L; final List<FlowFile> toSend = new ArrayList<>(); DestinationAccepts destinationAccepts = null; CloseableHttpClient client = null; final String transactionId = UUID.randomUUID().toString(); final AtomicReference<String> dnHolder = new AtomicReference<>("none"); while (true) { FlowFile flowFile = session.get(); if (flowFile == null) { break; } final String url = context.getProperty(URL).evaluateAttributeExpressions(flowFile).getValue(); try { new java.net.URL(url); } catch (final MalformedURLException e) { logger.error( "After substituting attribute values for {}, URL is {}; this is not a valid URL, so routing to failure", new Object[] { flowFile, url }); flowFile = session.penalize(flowFile); session.transfer(flowFile, REL_FAILURE); continue; } // If this FlowFile doesn't have the same url, throw it back on the queue and stop grabbing FlowFiles if (lastUrl != null && !lastUrl.equals(url)) { session.transfer(flowFile); break; } lastUrl = url; toSend.add(flowFile); if (client == null || destinationAccepts == null) { final Config config = getConfig(url, context); final HttpClientConnectionManager conMan = config.getConnectionManager(); final HttpClientBuilder clientBuilder = HttpClientBuilder.create(); clientBuilder.setConnectionManager(conMan); clientBuilder.setUserAgent(userAgent); clientBuilder.addInterceptorFirst(new HttpResponseInterceptor() { @Override public void process(final HttpResponse response, final HttpContext httpContext) throws HttpException, IOException { final HttpCoreContext coreContext = HttpCoreContext.adapt(httpContext); final ManagedHttpClientConnection conn = coreContext .getConnection(ManagedHttpClientConnection.class); if (!conn.isOpen()) { return; } final SSLSession sslSession = conn.getSSLSession(); if (sslSession != null) { final Certificate[] certChain = sslSession.getPeerCertificates(); if (certChain == null || certChain.length == 0) { throw new SSLPeerUnverifiedException("No certificates found"); } try { final X509Certificate cert = CertificateUtils .convertAbstractX509Certificate(certChain[0]); dnHolder.set(cert.getSubjectDN().getName().trim()); } catch (CertificateException e) { final String msg = "Could not extract subject DN from SSL session peer certificate"; logger.warn(msg); throw new SSLPeerUnverifiedException(msg); } } } }); clientBuilder.disableAutomaticRetries(); clientBuilder.disableContentCompression(); final String username = context.getProperty(USERNAME).getValue(); final String password = context.getProperty(PASSWORD).getValue(); // set the credentials if appropriate if (username != null) { final CredentialsProvider credentialsProvider = new BasicCredentialsProvider(); if (password == null) { credentialsProvider.setCredentials(AuthScope.ANY, new UsernamePasswordCredentials(username)); } else { credentialsProvider.setCredentials(AuthScope.ANY, new UsernamePasswordCredentials(username, password)); } clientBuilder.setDefaultCredentialsProvider(credentialsProvider); } // Set the proxy if specified if (context.getProperty(PROXY_HOST).isSet() && context.getProperty(PROXY_PORT).isSet()) { final String host = context.getProperty(PROXY_HOST).getValue(); final int port = context.getProperty(PROXY_PORT).asInteger(); clientBuilder.setProxy(new HttpHost(host, port)); } client = clientBuilder.build(); // determine whether or not destination accepts flowfile/gzip destinationAccepts = config.getDestinationAccepts(); if (destinationAccepts == null) { try { destinationAccepts = getDestinationAcceptance(sendAsFlowFile, client, url, getLogger(), transactionId); config.setDestinationAccepts(destinationAccepts); } catch (final IOException e) { flowFile = session.penalize(flowFile); session.transfer(flowFile, REL_FAILURE); logger.error( "Unable to communicate with destination {} to determine whether or not it can accept " + "flowfiles/gzip; routing {} to failure due to {}", new Object[] { url, flowFile, e }); context.yield(); return; } } } bytesToSend += flowFile.getSize(); if (bytesToSend > maxBatchBytes.longValue()) { break; } // if we are not sending as flowfile, or if the destination doesn't accept V3 or V2 (streaming) format, // then only use a single FlowFile if (!sendAsFlowFile || !destinationAccepts.isFlowFileV3Accepted() && !destinationAccepts.isFlowFileV2Accepted()) { break; } } if (toSend.isEmpty()) { return; } final String url = lastUrl; final HttpPost post = new HttpPost(url); final List<FlowFile> flowFileList = toSend; final DestinationAccepts accepts = destinationAccepts; final boolean isDestinationLegacyNiFi = accepts.getProtocolVersion() == null; final EntityTemplate entity = new EntityTemplate(new ContentProducer() { @Override public void writeTo(final OutputStream rawOut) throws IOException { final OutputStream throttled = throttler == null ? rawOut : throttler.newThrottledOutputStream(rawOut); OutputStream wrappedOut = new BufferedOutputStream(throttled); if (compressionLevel > 0 && accepts.isGzipAccepted()) { wrappedOut = new GZIPOutputStream(wrappedOut, compressionLevel); } try (final OutputStream out = wrappedOut) { for (final FlowFile flowFile : flowFileList) { session.read(flowFile, new InputStreamCallback() { @Override public void process(final InputStream rawIn) throws IOException { try (final InputStream in = new BufferedInputStream(rawIn)) { FlowFilePackager packager = null; if (!sendAsFlowFile) { packager = null; } else if (accepts.isFlowFileV3Accepted()) { packager = new FlowFilePackagerV3(); } else if (accepts.isFlowFileV2Accepted()) { packager = new FlowFilePackagerV2(); } else if (accepts.isFlowFileV1Accepted()) { packager = new FlowFilePackagerV1(); } // if none of the above conditions is met, we should never get here, because // we will have already verified that at least 1 of the FlowFile packaging // formats is acceptable if sending as FlowFile. if (packager == null) { StreamUtils.copy(in, out); } else { final Map<String, String> flowFileAttributes; if (isDestinationLegacyNiFi) { // Old versions of NiFi expect nf.file.name and nf.file.path to indicate filename & path; // in order to maintain backward compatibility, we copy the filename & path to those attribute keys. flowFileAttributes = new HashMap<>(flowFile.getAttributes()); flowFileAttributes.put("nf.file.name", flowFile.getAttribute(CoreAttributes.FILENAME.key())); flowFileAttributes.put("nf.file.path", flowFile.getAttribute(CoreAttributes.PATH.key())); } else { flowFileAttributes = flowFile.getAttributes(); } packager.packageFlowFile(in, out, flowFileAttributes, flowFile.getSize()); } } } }); } out.flush(); } } }) { @Override public long getContentLength() { if (compressionLevel == 0 && !sendAsFlowFile && !context.getProperty(CHUNKED_ENCODING).asBoolean()) { return toSend.get(0).getSize(); } else { return -1; } } }; if (context.getProperty(CHUNKED_ENCODING).isSet()) { entity.setChunked(context.getProperty(CHUNKED_ENCODING).asBoolean()); } post.setEntity(entity); post.setConfig(requestConfig); final String contentType; if (sendAsFlowFile) { if (accepts.isFlowFileV3Accepted()) { contentType = APPLICATION_FLOW_FILE_V3; } else if (accepts.isFlowFileV2Accepted()) { contentType = APPLICATION_FLOW_FILE_V2; } else if (accepts.isFlowFileV1Accepted()) { contentType = APPLICATION_FLOW_FILE_V1; } else { logger.error( "Cannot send data to {} because the destination does not accept FlowFiles and this processor is " + "configured to deliver FlowFiles; rolling back session", new Object[] { url }); session.rollback(); context.yield(); IOUtils.closeQuietly(client); return; } } else { final String contentTypeValue = context.getProperty(CONTENT_TYPE) .evaluateAttributeExpressions(toSend.get(0)).getValue(); contentType = StringUtils.isBlank(contentTypeValue) ? DEFAULT_CONTENT_TYPE : contentTypeValue; } final String attributeHeaderRegex = context.getProperty(ATTRIBUTES_AS_HEADERS_REGEX).getValue(); if (attributeHeaderRegex != null && !sendAsFlowFile && flowFileList.size() == 1) { final Pattern pattern = Pattern.compile(attributeHeaderRegex); final Map<String, String> attributes = flowFileList.get(0).getAttributes(); for (final Map.Entry<String, String> entry : attributes.entrySet()) { final String key = entry.getKey(); if (pattern.matcher(key).matches()) { post.setHeader(entry.getKey(), entry.getValue()); } } } post.setHeader(CONTENT_TYPE_HEADER, contentType); post.setHeader(FLOWFILE_CONFIRMATION_HEADER, "true"); post.setHeader(PROTOCOL_VERSION_HEADER, PROTOCOL_VERSION); post.setHeader(TRANSACTION_ID_HEADER, transactionId); if (compressionLevel > 0 && accepts.isGzipAccepted()) { if (sendAsFlowFile) { post.setHeader(GZIPPED_HEADER, "true"); } else { post.setHeader(CONTENT_ENCODING_HEADER, CONTENT_ENCODING_GZIP_VALUE); } } // Do the actual POST final String flowFileDescription = toSend.size() <= 10 ? toSend.toString() : toSend.size() + " FlowFiles"; final String uploadDataRate; final long uploadMillis; CloseableHttpResponse response = null; try { final StopWatch stopWatch = new StopWatch(true); response = client.execute(post); // consume input stream entirely, ignoring its contents. If we // don't do this, the Connection will not be returned to the pool EntityUtils.consume(response.getEntity()); stopWatch.stop(); uploadDataRate = stopWatch.calculateDataRate(bytesToSend); uploadMillis = stopWatch.getDuration(TimeUnit.MILLISECONDS); } catch (final IOException e) { logger.error("Failed to Post {} due to {}; transferring to failure", new Object[] { flowFileDescription, e }); context.yield(); for (FlowFile flowFile : toSend) { flowFile = session.penalize(flowFile); session.transfer(flowFile, REL_FAILURE); } return; } finally { if (response != null) { try { response.close(); } catch (final IOException e) { getLogger().warn("Failed to close HTTP Response due to {}", new Object[] { e }); } } } // If we get a 'SEE OTHER' status code and an HTTP header that indicates that the intent // of the Location URI is a flowfile hold, we will store this holdUri. This prevents us // from posting to some other webservice and then attempting to delete some resource to which // we are redirected final int responseCode = response.getStatusLine().getStatusCode(); final String responseReason = response.getStatusLine().getReasonPhrase(); String holdUri = null; if (responseCode == HttpServletResponse.SC_SEE_OTHER) { final Header locationUriHeader = response.getFirstHeader(LOCATION_URI_INTENT_NAME); if (locationUriHeader != null) { if (LOCATION_URI_INTENT_VALUE.equals(locationUriHeader.getValue())) { final Header holdUriHeader = response.getFirstHeader(LOCATION_HEADER_NAME); if (holdUriHeader != null) { holdUri = holdUriHeader.getValue(); } } } if (holdUri == null) { for (FlowFile flowFile : toSend) { flowFile = session.penalize(flowFile); logger.error( "Failed to Post {} to {}: sent content and received status code {}:{} but no Hold URI", new Object[] { flowFile, url, responseCode, responseReason }); session.transfer(flowFile, REL_FAILURE); } return; } } if (holdUri == null) { if (responseCode == HttpServletResponse.SC_SERVICE_UNAVAILABLE) { for (FlowFile flowFile : toSend) { flowFile = session.penalize(flowFile); logger.error( "Failed to Post {} to {}: response code was {}:{}; will yield processing, " + "since the destination is temporarily unavailable", new Object[] { flowFile, url, responseCode, responseReason }); session.transfer(flowFile, REL_FAILURE); } context.yield(); return; } if (responseCode >= 300) { for (FlowFile flowFile : toSend) { flowFile = session.penalize(flowFile); logger.error("Failed to Post {} to {}: response code was {}:{}", new Object[] { flowFile, url, responseCode, responseReason }); session.transfer(flowFile, REL_FAILURE); } return; } logger.info("Successfully Posted {} to {} in {} at a rate of {}", new Object[] { flowFileDescription, url, FormatUtils.formatMinutesSeconds(uploadMillis, TimeUnit.MILLISECONDS), uploadDataRate }); for (final FlowFile flowFile : toSend) { session.getProvenanceReporter().send(flowFile, url, "Remote DN=" + dnHolder.get(), uploadMillis, true); session.transfer(flowFile, REL_SUCCESS); } return; } // // the response indicated a Hold URI; delete the Hold. // // determine the full URI of the Flow File's Hold; Unfortunately, the responses that are returned have // changed over the past, so we have to take into account a few different possibilities. String fullHoldUri = holdUri; if (holdUri.startsWith("/contentListener")) { // If the Hold URI that we get starts with /contentListener, it may not really be /contentListener, // as this really indicates that it should be whatever we posted to -- if posting directly to the // ListenHTTP component, it will be /contentListener, but if posting to a proxy/load balancer, we may // be posting to some other URL. fullHoldUri = url + holdUri.substring(16); } else if (holdUri.startsWith("/")) { // URL indicates the full path but not hostname or port; use the same hostname & port that we posted // to but use the full path indicated by the response. int firstSlash = url.indexOf("/", 8); if (firstSlash < 0) { firstSlash = url.length(); } final String beforeSlash = url.substring(0, firstSlash); fullHoldUri = beforeSlash + holdUri; } else if (!holdUri.startsWith("http")) { // Absolute URL fullHoldUri = url + (url.endsWith("/") ? "" : "/") + holdUri; } final HttpDelete delete = new HttpDelete(fullHoldUri); delete.setHeader(TRANSACTION_ID_HEADER, transactionId); while (true) { try { final HttpResponse holdResponse = client.execute(delete); EntityUtils.consume(holdResponse.getEntity()); final int holdStatusCode = holdResponse.getStatusLine().getStatusCode(); final String holdReason = holdResponse.getStatusLine().getReasonPhrase(); if (holdStatusCode >= 300) { logger.error( "Failed to delete Hold that destination placed on {}: got response code {}:{}; routing to failure", new Object[] { flowFileDescription, holdStatusCode, holdReason }); for (FlowFile flowFile : toSend) { flowFile = session.penalize(flowFile); session.transfer(flowFile, REL_FAILURE); } return; } logger.info("Successfully Posted {} to {} in {} milliseconds at a rate of {}", new Object[] { flowFileDescription, url, uploadMillis, uploadDataRate }); for (final FlowFile flowFile : toSend) { session.getProvenanceReporter().send(flowFile, url); session.transfer(flowFile, REL_SUCCESS); } return; } catch (final IOException e) { logger.warn("Failed to delete Hold that destination placed on {} due to {}", new Object[] { flowFileDescription, e }); } if (!isScheduled()) { context.yield(); logger.warn( "Failed to delete Hold that destination placed on {}; Processor has been stopped so routing FlowFile(s) to failure", new Object[] { flowFileDescription }); for (FlowFile flowFile : toSend) { flowFile = session.penalize(flowFile); session.transfer(flowFile, REL_FAILURE); } return; } } }