imported HttpConnector from https://svn.driver.research-infrastructures.eu/driver/dnet45/modules/dnet-modular-collector-service/trunk/src/main/java/eu/dnetlib/data/collector/plugins/HttpConnector.java as HttpConnector2
parent
72c57b28fa
commit
deb85706db
@ -1,16 +0,0 @@
|
||||
|
||||
package eu.dnetlib.dhp.model.mdstore;
|
||||
|
||||
import static org.junit.jupiter.api.Assertions.assertTrue;
|
||||
|
||||
import org.junit.jupiter.api.Test;
|
||||
|
||||
public class MetadataRecordTest {
|
||||
|
||||
@Test
|
||||
public void getTimestamp() {
|
||||
|
||||
MetadataRecord r = new MetadataRecord();
|
||||
assertTrue(r.getDateOfCollection() > 0);
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,298 @@
|
||||
|
||||
package eu.dnetlib.dhp.collection.worker.utils;
|
||||
|
||||
import java.io.ByteArrayInputStream;
|
||||
import java.io.IOException;
|
||||
import java.io.InputStream;
|
||||
import java.net.*;
|
||||
import java.security.GeneralSecurityException;
|
||||
import java.security.cert.X509Certificate;
|
||||
import java.util.List;
|
||||
import java.util.Map;
|
||||
|
||||
import javax.net.ssl.HttpsURLConnection;
|
||||
import javax.net.ssl.SSLContext;
|
||||
import javax.net.ssl.TrustManager;
|
||||
import javax.net.ssl.X509TrustManager;
|
||||
|
||||
import org.apache.commons.io.IOUtils;
|
||||
import org.apache.commons.lang3.math.NumberUtils;
|
||||
import org.apache.commons.logging.Log;
|
||||
import org.apache.commons.logging.LogFactory;
|
||||
|
||||
import eu.dnetlib.dhp.collection.worker.CollectorException;
|
||||
|
||||
/**
|
||||
* Migrated from https://svn.driver.research-infrastructures.eu/driver/dnet45/modules/dnet-modular-collector-service/trunk/src/main/java/eu/dnetlib/data/collector/plugins/HttpConnector.java
|
||||
*
|
||||
* @author jochen, michele, andrea, alessia
|
||||
*/
|
||||
public class HttpConnector2 {
|
||||
|
||||
private static final Log log = LogFactory.getLog(HttpConnector.class);
|
||||
|
||||
private int maxNumberOfRetry = 6;
|
||||
private int defaultDelay = 120; // seconds
|
||||
private int readTimeOut = 120; // seconds
|
||||
|
||||
private String responseType = null;
|
||||
|
||||
private String userAgent = "Mozilla/5.0 (compatible; OAI; +http://www.openaire.eu)";
|
||||
|
||||
public HttpConnector2() {
|
||||
CookieHandler.setDefault(new CookieManager(null, CookiePolicy.ACCEPT_ALL));
|
||||
}
|
||||
|
||||
/**
|
||||
* @see HttpConnector2#getInputSource(java.lang.String, eu.dnetlib.dhp.collection.worker.utils.CollectorPluginErrorLogList)
|
||||
*/
|
||||
public String getInputSource(final String requestUrl) throws CollectorException {
|
||||
return attemptDownlaodAsString(requestUrl, 1, new CollectorPluginErrorLogList());
|
||||
}
|
||||
|
||||
/**
|
||||
* @see HttpConnector2#getInputSource(java.lang.String, eu.dnetlib.dhp.collection.worker.utils.CollectorPluginErrorLogList)
|
||||
*/
|
||||
public InputStream getInputSourceAsStream(final String requestUrl) throws CollectorException {
|
||||
return IOUtils.toInputStream(getInputSource(requestUrl));
|
||||
}
|
||||
|
||||
/**
|
||||
* Given the URL returns the content via HTTP GET
|
||||
*
|
||||
* @param requestUrl the URL
|
||||
* @param errorLogList the list of errors
|
||||
* @return the content of the downloaded resource
|
||||
* @throws CollectorException when retrying more than maxNumberOfRetry times
|
||||
*/
|
||||
public String getInputSource(final String requestUrl, CollectorPluginErrorLogList errorLogList)
|
||||
throws CollectorException {
|
||||
return attemptDownlaodAsString(requestUrl, 1, errorLogList);
|
||||
}
|
||||
|
||||
private String attemptDownlaodAsString(final String requestUrl, final int retryNumber,
|
||||
final CollectorPluginErrorLogList errorList)
|
||||
throws CollectorException {
|
||||
try {
|
||||
InputStream s = attemptDownload(requestUrl, 1, new CollectorPluginErrorLogList());
|
||||
try {
|
||||
return IOUtils.toString(s);
|
||||
} catch (IOException e) {
|
||||
log.error("error while retrieving from http-connection occured: " + requestUrl, e);
|
||||
Thread.sleep(defaultDelay * 1000);
|
||||
errorList.add(e.getMessage());
|
||||
return attemptDownlaodAsString(requestUrl, retryNumber + 1, errorList);
|
||||
} finally {
|
||||
IOUtils.closeQuietly(s);
|
||||
}
|
||||
} catch (InterruptedException e) {
|
||||
throw new CollectorException(e);
|
||||
}
|
||||
}
|
||||
|
||||
private InputStream attemptDownload(final String requestUrl, final int retryNumber,
|
||||
final CollectorPluginErrorLogList errorList)
|
||||
throws CollectorException {
|
||||
|
||||
if (retryNumber > maxNumberOfRetry) {
|
||||
throw new CollectorException("Max number of retries exceeded. Cause: \n " + errorList);
|
||||
}
|
||||
|
||||
log.debug("Downloading " + requestUrl + " - try: " + retryNumber);
|
||||
try {
|
||||
InputStream input = null;
|
||||
|
||||
try {
|
||||
final HttpURLConnection urlConn = (HttpURLConnection) new URL(requestUrl).openConnection();
|
||||
urlConn.setInstanceFollowRedirects(false);
|
||||
urlConn.setReadTimeout(readTimeOut * 1000);
|
||||
urlConn.addRequestProperty("User-Agent", userAgent);
|
||||
|
||||
if (log.isDebugEnabled()) {
|
||||
logHeaderFields(urlConn);
|
||||
}
|
||||
|
||||
int retryAfter = obtainRetryAfter(urlConn.getHeaderFields());
|
||||
if (is2xx(urlConn.getResponseCode())) {
|
||||
input = urlConn.getInputStream();
|
||||
responseType = urlConn.getContentType();
|
||||
return input;
|
||||
}
|
||||
if (is3xx(urlConn.getResponseCode())) {
|
||||
// REDIRECTS
|
||||
final String newUrl = obtainNewLocation(urlConn.getHeaderFields());
|
||||
log.debug(String.format("The requested url %s has been moved to %s", requestUrl, newUrl));
|
||||
errorList
|
||||
.add(
|
||||
String
|
||||
.format(
|
||||
"%s %s %s. Moved to: %s", requestUrl, urlConn.getResponseCode(),
|
||||
urlConn.getResponseMessage(), newUrl));
|
||||
urlConn.disconnect();
|
||||
if (retryAfter > 0)
|
||||
Thread.sleep(retryAfter * 1000);
|
||||
return attemptDownload(newUrl, retryNumber + 1, errorList);
|
||||
}
|
||||
if (is4xx(urlConn.getResponseCode())) {
|
||||
// CLIENT ERROR, DO NOT RETRY
|
||||
errorList
|
||||
.add(
|
||||
String
|
||||
.format(
|
||||
"%s error %s: %s", requestUrl, urlConn.getResponseCode(),
|
||||
urlConn.getResponseMessage()));
|
||||
throw new CollectorException("4xx error: request will not be repeated. " + errorList);
|
||||
}
|
||||
if (is5xx(urlConn.getResponseCode())) {
|
||||
// SERVER SIDE ERRORS RETRY ONLY on 503
|
||||
switch (urlConn.getResponseCode()) {
|
||||
case HttpURLConnection.HTTP_UNAVAILABLE:
|
||||
if (retryAfter > 0) {
|
||||
log
|
||||
.warn(
|
||||
requestUrl + " - waiting and repeating request after suggested retry-after "
|
||||
+ retryAfter + " sec.");
|
||||
Thread.sleep(retryAfter * 1000);
|
||||
} else {
|
||||
log
|
||||
.warn(
|
||||
requestUrl + " - waiting and repeating request after default delay of "
|
||||
+ defaultDelay + " sec.");
|
||||
Thread.sleep(defaultDelay * 1000);
|
||||
}
|
||||
errorList.add(requestUrl + " 503 Service Unavailable");
|
||||
urlConn.disconnect();
|
||||
return attemptDownload(requestUrl, retryNumber + 1, errorList);
|
||||
default:
|
||||
errorList
|
||||
.add(
|
||||
String
|
||||
.format(
|
||||
"%s Error %s: %s", requestUrl, urlConn.getResponseCode(),
|
||||
urlConn.getResponseMessage()));
|
||||
throw new CollectorException(urlConn.getResponseCode() + " error " + errorList);
|
||||
}
|
||||
}
|
||||
throw new CollectorException(
|
||||
String.format("Unexpected status code: %s error %s", urlConn.getResponseCode(), errorList));
|
||||
} catch (MalformedURLException | NoRouteToHostException e) {
|
||||
errorList.add(String.format("Error: %s for request url: %s", e.getCause(), requestUrl));
|
||||
throw new CollectorException(e + "error " + errorList);
|
||||
} catch (IOException e) {
|
||||
Thread.sleep(defaultDelay * 1000);
|
||||
errorList.add(requestUrl + " " + e.getMessage());
|
||||
return attemptDownload(requestUrl, retryNumber + 1, errorList);
|
||||
}
|
||||
} catch (InterruptedException e) {
|
||||
throw new CollectorException(e);
|
||||
}
|
||||
}
|
||||
|
||||
private void logHeaderFields(final HttpURLConnection urlConn) throws IOException {
|
||||
log.debug("StatusCode: " + urlConn.getResponseMessage());
|
||||
|
||||
for (Map.Entry<String, List<String>> e : urlConn.getHeaderFields().entrySet()) {
|
||||
if (e.getKey() != null) {
|
||||
for (String v : e.getValue()) {
|
||||
log.debug(" key: " + e.getKey() + " - value: " + v);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private int obtainRetryAfter(final Map<String, List<String>> headerMap) {
|
||||
for (String key : headerMap.keySet()) {
|
||||
if ((key != null) && key.toLowerCase().equals("retry-after") && (headerMap.get(key).size() > 0)
|
||||
&& NumberUtils.isCreatable(headerMap.get(key).get(0))) {
|
||||
return Integer
|
||||
.parseInt(headerMap.get(key).get(0)) + 10;
|
||||
}
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
|
||||
private String obtainNewLocation(final Map<String, List<String>> headerMap) throws CollectorException {
|
||||
for (String key : headerMap.keySet()) {
|
||||
if ((key != null) && key.toLowerCase().equals("location") && (headerMap.get(key).size() > 0)) {
|
||||
return headerMap.get(key).get(0);
|
||||
}
|
||||
}
|
||||
throw new CollectorException("The requested url has been MOVED, but 'location' param is MISSING");
|
||||
}
|
||||
|
||||
/**
|
||||
* register for https scheme; this is a workaround and not intended for the use in trusted environments
|
||||
*/
|
||||
public void initTrustManager() {
|
||||
final X509TrustManager tm = new X509TrustManager() {
|
||||
|
||||
@Override
|
||||
public void checkClientTrusted(final X509Certificate[] xcs, final String string) {
|
||||
}
|
||||
|
||||
@Override
|
||||
public void checkServerTrusted(final X509Certificate[] xcs, final String string) {
|
||||
}
|
||||
|
||||
@Override
|
||||
public X509Certificate[] getAcceptedIssuers() {
|
||||
return null;
|
||||
}
|
||||
};
|
||||
try {
|
||||
final SSLContext ctx = SSLContext.getInstance("TLS");
|
||||
ctx.init(null, new TrustManager[] {
|
||||
tm
|
||||
}, null);
|
||||
HttpsURLConnection.setDefaultSSLSocketFactory(ctx.getSocketFactory());
|
||||
} catch (GeneralSecurityException e) {
|
||||
log.fatal(e);
|
||||
throw new IllegalStateException(e);
|
||||
}
|
||||
}
|
||||
|
||||
private boolean is2xx(final int statusCode) {
|
||||
return statusCode >= 200 && statusCode <= 299;
|
||||
}
|
||||
|
||||
private boolean is4xx(final int statusCode) {
|
||||
return statusCode >= 400 && statusCode <= 499;
|
||||
}
|
||||
|
||||
private boolean is3xx(final int statusCode) {
|
||||
return statusCode >= 300 && statusCode <= 399;
|
||||
}
|
||||
|
||||
private boolean is5xx(final int statusCode) {
|
||||
return statusCode >= 500 && statusCode <= 599;
|
||||
}
|
||||
|
||||
public int getMaxNumberOfRetry() {
|
||||
return maxNumberOfRetry;
|
||||
}
|
||||
|
||||
public void setMaxNumberOfRetry(final int maxNumberOfRetry) {
|
||||
this.maxNumberOfRetry = maxNumberOfRetry;
|
||||
}
|
||||
|
||||
public int getDefaultDelay() {
|
||||
return defaultDelay;
|
||||
}
|
||||
|
||||
public void setDefaultDelay(final int defaultDelay) {
|
||||
this.defaultDelay = defaultDelay;
|
||||
}
|
||||
|
||||
public int getReadTimeOut() {
|
||||
return readTimeOut;
|
||||
}
|
||||
|
||||
public void setReadTimeOut(final int readTimeOut) {
|
||||
this.readTimeOut = readTimeOut;
|
||||
}
|
||||
|
||||
public String getResponseType() {
|
||||
return responseType;
|
||||
}
|
||||
|
||||
}
|
||||
Loading…
Reference in New Issue