/**
* Constructs the URL used to obtain meta data for a given document type identifier of a given
* participant identifier.
*/
URL constructDocumentTypeURL(
ParticipantId participantId, PeppolDocumentTypeId documentTypeIdentifier) {
String scheme = ParticipantId.getScheme();
String value = participantId.stringValue();
String hostname = null;
String urlString = null;
try {
hostname = "B-" + Util.calculateMD5(value.toLowerCase()) + "." + scheme + "." + smlHost;
String encodedParticipant = URLEncoder.encode(scheme + "::" + value, "UTF-8");
String encodedDocumentId =
URLEncoder.encode(
PeppolDocumentTypeIdAcronym.getScheme() + "::" + documentTypeIdentifier.toString(),
"UTF-8");
urlString =
"http://" + hostname + "/" + encodedParticipant + "/services/" + encodedDocumentId;
return new URL(urlString);
} catch (MessageDigestException e) {
throw new IllegalStateException(
"Unable to calculate message digest for: "
+ participantId
+ ", doc.type:"
+ documentTypeIdentifier,
e);
} catch (UnsupportedEncodingException e) {
throw new IllegalStateException("Unable to encode _" + scheme + "::" + value, e);
} catch (MalformedURLException e) {
throw new IllegalArgumentException("Unable to create URL from string:" + urlString, e);
}
}
/**
* Retrieves an instance of the complete EndpointType for a given participant and the given
* document type identifier. Given by the following XPath:
*
* <pre>
* //ServiceMetadata/ServiceInformation/ProcessList/Process[0]/ServiceEndpointList/Endpoint[0]
* </pre>
*
* @param participant the participant identifier
* @param documentTypeIdentifier the document type identifier
* @return the JAXB generated EndpointType object
*/
private EndpointType getEndpointType(
ParticipantId participant, PeppolDocumentTypeId documentTypeIdentifier) {
try {
SignedServiceMetadataType serviceMetadata =
getServiceMetaData(participant, documentTypeIdentifier);
return selectOptimalEndpoint(serviceMetadata);
} catch (Exception e) {
String pid =
(participant == null)
? "participant missing"
: "for participant " + participant.toString();
String did =
(documentTypeIdentifier == null)
? "document type missing"
: "document type " + documentTypeIdentifier.toString();
throw new RuntimeException("Problem with SMP lookup " + pid + " and " + did, e);
}
}
/** Provides the end point data required for transmission of a message. */
@Override
public PeppolEndpointData getEndpointTransmissionData(
ParticipantId participantId, PeppolDocumentTypeId documentTypeIdentifier) {
EndpointType endpointType = getEndpointType(participantId, documentTypeIdentifier);
String transportProfile = endpointType.getTransportProfile();
String address = getEndPointUrl(endpointType);
X509Certificate x509Certificate = getX509CertificateFromEndpointType(endpointType);
try {
return new PeppolEndpointData(
new URL(address),
BusDoxProtocol.instanceFrom(transportProfile),
CommonName.valueOf(x509Certificate.getSubjectX500Principal()));
} catch (Exception e) {
throw new IllegalStateException(
"Unable to provide end point data for "
+ participantId
+ " for "
+ documentTypeIdentifier.toString());
}
}
/**
* Retrieves a group of URLs representing the documents accepted by the given participant id
*
* @param participantId participant id to look up
* @return list of URLs representing each document type accepted
*/
@Override
public List<PeppolDocumentTypeId> getServiceGroups(ParticipantId participantId)
throws SmpLookupException, ParticipantNotRegisteredException {
// Creates the URL for the service meta data for the supplied participant
URL serviceGroupURL = constructServiceGroupURL(participantId);
if (!isParticipantRegistered(serviceGroupURL)) {
throw new ParticipantNotRegisteredException(participantId);
}
NodeList nodes;
List<PeppolDocumentTypeId> result = new ArrayList<PeppolDocumentTypeId>();
InputSource smpContents;
/*
When looking up ParticipantId("9908:976098897") we expected the SML not
to resolve, but it actually did and we got a not found (HTTP 404) response
from SMP instead (smp-basware.publisher.sml.peppolcentral.org).
*/
try {
smpContents = smpContentRetriever.getUrlContent(serviceGroupURL);
} catch (ConnectionException ex) {
if (404 == ex.getCode()) {
// signal that we got a NOT FOUND for that participant in the SMP
throw new ParticipantNotRegisteredException(participantId);
} else {
throw ex; // re-throw exception
}
}
// Parses the XML response from the SMP
try {
DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
documentBuilderFactory.setNamespaceAware(true);
DocumentBuilder documentBuilder;
Document document;
documentBuilder = documentBuilderFactory.newDocumentBuilder();
document = documentBuilder.parse(smpContents);
// Locates the namespace URI of the root element
String nameSpaceURI = document.getDocumentElement().getNamespaceURI();
nodes = document.getElementsByTagNameNS(nameSpaceURI, "ServiceMetadataReference");
} catch (Exception e) {
throw new SmpLookupException(participantId, serviceGroupURL, e);
}
// Loop the SMR elements, if any, and populate the result list
if (nodes != null) {
for (int i = 0; i < nodes.getLength(); i++) {
String docTypeAsString = null;
try {
// Fetch href attribute
Element element = (Element) nodes.item(i);
String hrefAsString = element.getAttribute("href");
// Gets rid of all the funny %3A's...
hrefAsString = URLDecoder.decode(hrefAsString, "UTF-8");
// Grabs the entire text string after "busdox-docid-qns::"
docTypeAsString =
hrefAsString.substring(
hrefAsString.indexOf("busdox-docid-qns::") + "busdox-docid-qns::".length());
// Parses and creates the document type id
PeppolDocumentTypeId peppolDocumentTypeId = PeppolDocumentTypeId.valueOf(docTypeAsString);
result.add(peppolDocumentTypeId);
} catch (Exception e) {
/* ignore unparseable document types at runtime */
Log.warn(
"Unable to create PeppolDocumentTypeId from "
+ docTypeAsString
+ ", got exception "
+ e.getMessage());
}
}
}
return result;
}
