Revision 53932
Added by Alessia Bardi over 5 years ago
| HttpConnector.java | ||
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import java.io.InputStream; |
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import java.net.*; |
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import java.security.GeneralSecurityException; |
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import java.security.cert.CertificateException; |
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import java.security.cert.X509Certificate; |
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import java.util.List; |
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import java.util.Map; |
| ... | ... | |
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/** |
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* @author jochen, michele, andrea |
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* |
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*/ |
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public class HttpConnector {
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|
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private int defaultDelay = 120; // seconds |
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private int readTimeOut = 120; // seconds |
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private String responseType=null;
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private String responseType = null;
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private String userAgent = "Mozilla/5.0 (compatible; OAI; +http://www.openaire.eu)"; |
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public HttpConnector(){
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CookieHandler.setDefault(new CookieManager(null, CookiePolicy.ACCEPT_ALL));
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}
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public HttpConnector() {
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CookieHandler.setDefault(new CookieManager(null, CookiePolicy.ACCEPT_ALL));
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}
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/** |
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* Given the URL returns the content via HTTP GET |
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* |
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* @throws CollectorServiceException when retrying more than maxNumberOfRetry times |
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*/ |
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public String getInputSource(final String requestUrl) throws CollectorServiceException {
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return attemptDownlaodAsString(requestUrl, 1, new CollectorPluginErrorLogList()); |
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} |
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/** |
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* Given the URL returns the content as a stream via HTTP GET |
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* |
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* @param requestUrl the URL |
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* @return the content of the downloaded resource as InputStream |
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* @throws CollectorServiceException when retrying more than maxNumberOfRetry times |
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*/ |
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public InputStream getInputSourceAsStream(final String requestUrl) throws CollectorServiceException {
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return attemptDownload(requestUrl, 1, new CollectorPluginErrorLogList()); |
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} |
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private String attemptDownlaodAsString(final String requestUrl, final int retryNumber, final CollectorPluginErrorLogList errorList) |
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throws CollectorServiceException {
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try {
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InputStream s = attemptDownload(requestUrl, 1, new CollectorPluginErrorLogList()); |
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try {
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return IOUtils.toString(s); |
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} catch (IOException e) {
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log.error("error while retrieving from http-connection occured: " + requestUrl, e);
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Thread.sleep(defaultDelay * 1000); |
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errorList.add(e.getMessage()); |
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return attemptDownlaodAsString(requestUrl, retryNumber + 1, errorList); |
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} |
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finally{
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IOUtils.closeQuietly(s); |
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} |
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} catch (InterruptedException e) {
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throw new CollectorServiceException(e); |
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} |
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} |
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private String attemptDownload(final String requestUrl, final int retryNumber, final CollectorPluginErrorLogList errorList) |
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private InputStream attemptDownload(final String requestUrl, final int retryNumber, final CollectorPluginErrorLogList errorList) |
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throws CollectorServiceException {
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if (retryNumber > maxNumberOfRetry) { throw new CollectorServiceException("Max number of retries exceeded. Cause: \n " + errorList); }
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errorList.add("503 Service Unavailable");
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urlConn.disconnect(); |
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return attemptDownload(requestUrl, retryNumber + 1, errorList); |
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} else if ((urlConn.getResponseCode() == HttpURLConnection.HTTP_MOVED_PERM) || (urlConn.getResponseCode() == HttpURLConnection.HTTP_MOVED_TEMP)) {
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} else if ((urlConn.getResponseCode() == HttpURLConnection.HTTP_MOVED_PERM) || (urlConn.getResponseCode() |
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== HttpURLConnection.HTTP_MOVED_TEMP)) {
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final String newUrl = obtainNewLocation(urlConn.getHeaderFields()); |
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log.debug("The requested url has been moved to " + newUrl);
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errorList.add(String.format("%s %s. Moved to: %s", urlConn.getResponseCode(), urlConn.getResponseMessage(), newUrl));
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} else {
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input = urlConn.getInputStream(); |
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responseType = urlConn.getContentType(); |
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return IOUtils.toString(input); |
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return input; |
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} |
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} catch (IOException e) {
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log.error("error while retrieving from http-connection occured: " + requestUrl, e);
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Thread.sleep(defaultDelay * 1000); |
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errorList.add(e.getMessage()); |
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return attemptDownload(requestUrl, retryNumber + 1, errorList); |
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} finally {
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IOUtils.closeQuietly(input); |
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} |
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} catch (InterruptedException e) {
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throw new CollectorServiceException(e); |
| ... | ... | |
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private int obtainRetryAfter(final Map<String, List<String>> headerMap) {
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for (String key : headerMap.keySet()) {
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if ((key != null) && key.toLowerCase().equals("retry-after") && (headerMap.get(key).size() > 0) && NumberUtils.isNumber(headerMap.get(key).get(0))) { return Integer
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.parseInt(headerMap.get(key).get(0)) + 10; } |
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if ((key != null) && key.toLowerCase().equals("retry-after") && (headerMap.get(key).size() > 0) && NumberUtils.isCreatable(headerMap.get(key).get(0))) {
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return Integer |
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.parseInt(headerMap.get(key).get(0)) + 10; |
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} |
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} |
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return -1; |
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} |
| ... | ... | |
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final X509TrustManager tm = new X509TrustManager() {
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@Override |
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public void checkClientTrusted(final X509Certificate[] xcs, final String string) throws CertificateException {}
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public void checkClientTrusted(final X509Certificate[] xcs, final String string) {
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} |
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@Override |
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public void checkServerTrusted(final X509Certificate[] xcs, final String string) throws CertificateException {}
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public void checkServerTrusted(final X509Certificate[] xcs, final String string) {
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} |
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@Override |
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public X509Certificate[] getAcceptedIssuers() {
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| ... | ... | |
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} |
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} |
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public int getMaxNumberOfRetry() {
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return maxNumberOfRetry; |
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} |
| ... | ... | |
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this.readTimeOut = readTimeOut; |
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} |
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public String getResponseType() {return responseType;}
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public String getResponseType() {
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return responseType; |
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} |
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} |
Also available in: Unified diff
Upgrade to commons.net:commons.net 3.6 (from 3.3) and commons-httpclient 4.5.6 (from 3.1).
using HttpConnector where needed.
httpConnector can now return an InputStream and not only a string.