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cass.rollup.coprocessor.ims.OpenBadgeCoprocessor Maven / Gradle / Ivy
package cass.rollup.coprocessor.ims;
import cass.rollup.InquiryPacket;
import cass.rollup.coprocessor.AssertionCoprocessor;
import com.eduworks.ec.array.EcAsyncHelper;
import com.eduworks.ec.crypto.EcCrypto;
import com.eduworks.ec.crypto.EcPk;
import org.cass.profile.EcAssertion;
import org.cassproject.ebac.repository.EcRepository;
import org.cassproject.schema.cass.profile.Assertion;
import org.cassproject.schema.general.EcRemoteLinkedData;
import org.stjs.javascript.Array;
import org.stjs.javascript.Date;
import org.stjs.javascript.JSObjectAdapter;
import org.stjs.javascript.functions.Callback0;
import org.stjs.javascript.functions.Callback1;
import org.stjs.javascript.functions.Callback2;
public class OpenBadgeCoprocessor extends AssertionCoprocessor {
public String email = null;
public EcPk badgePluginIdentifier = null;
public Double confidenceOfBadges = 1.0;
@Override
public void collectAssertions(final InquiryPacket ip, final Array listOfCompetencies, final Callback1> success) {
if (listOfCompetencies.$length() == 0) {
super.collectAssertions(ip, listOfCompetencies, success);
return;
}
final Array assertions = new Array<>();
final OpenBadgeCoprocessor me = this;
EcAsyncHelper eah = new EcAsyncHelper();
eah.each(me.assertionProcessor.repositories, new Callback2() {
@Override
public void $invoke(final EcRepository currentRepository, final Callback0 callback0) {
String searchQuery = "@type:\"BadgeClass\"";
for (int i = 0; i < listOfCompetencies.$length(); i++) {
if (i == 0)
searchQuery += " AND (";
if (i > 0)
searchQuery += " OR ";
searchQuery += "alignment.targetUrl:\"" + listOfCompetencies.$get(i) + "\"";
}
if (listOfCompetencies.$length() > 0)
searchQuery += ")";
me.assertionProcessor.log(ip, "Querying repositories for badges regarding " + listOfCompetencies.$length() + " query: " + searchQuery);
Object params = new Object();
JSObjectAdapter.$put(params, "size", 5000);
currentRepository.searchWithParams(searchQuery, params, null, new Callback1>() {
public void $invoke(final Array p1) {
me.assertionProcessor.log(ip, p1.$length() + " badgeClasses found.");
EcAsyncHelper badgeClassHelper = new EcAsyncHelper<>();
badgeClassHelper.each(p1, new Callback2() {
@Override
public void $invoke(final EcRemoteLinkedData badgeClass, final Callback0 badgeClassDone) {
currentRepository.search("@context:\"https://w3id.org/openbadges/v2\" AND @type:Assertion AND badge:\"" + badgeClass.id + "\"", null, new Callback1>() {
@Override
public void $invoke(Array badgeAssertions) {
for (int j = 0; j < badgeAssertions.$length(); j++) {
String hash = EcCrypto.sha256(me.email + JSObjectAdapter.$get(JSObjectAdapter.$get(badgeAssertions.$get(j), "recipient"), "salt"));
if ("sha256$" + hash.toLowerCase() != JSObjectAdapter.$get(JSObjectAdapter.$get(badgeAssertions.$get(j), "recipient"), "identity")) {
me.assertionProcessor.log(ip,me.email + " hashed with salt != " + JSObjectAdapter.$get(JSObjectAdapter.$get(badgeAssertions.$get(j), "recipient"), "identity"));
badgeAssertions.splice(j--, 1);
}
else
me.assertionProcessor.log(ip,me.email + " hashed with salt == " + JSObjectAdapter.$get(JSObjectAdapter.$get(badgeAssertions.$get(j), "recipient"), "identity"));
}
for (int j = 0;j < badgeAssertions.$length();j++)
{
Array alignments = (Array) JSObjectAdapter.$get(badgeClass,"alignment");
if (alignments != null)
for (int k = 0;k < alignments.$length();k++)
{
Object alignment = alignments.$get(k);
EcAssertion a = (EcAssertion)new Assertion();
a.addOwner(ip.subject.$get(0));
a.setSubject(ip.subject.$get(0));
a.setAgent(me.badgePluginIdentifier);
a.competency = (String) JSObjectAdapter.$get(alignment,"targetUrl");
me.assertionProcessor.log(ip,"Generating Assertion for competency: " + (String) JSObjectAdapter.$get(alignment,"targetUrl"));
a.framework = (String) JSObjectAdapter.$get(alignment,"targetFramework");
a.confidence = me.confidenceOfBadges;
Array evidence = new Array<>();
evidence.push(badgeAssertions.$get(j).id);
a.setEvidence(evidence);
a.setAssertionDate((Long) (Object) new Date((String) JSObjectAdapter.$get(badgeAssertions.$get(j),"issuedOn")).getTime());
assertions.push(a);
}
}
badgeClassDone.$invoke();
}
}, ip.failure);
}
}, new Callback1>() {
@Override
public void $invoke(Array strings) {
callback0.$invoke();
}
});
}
}, ip.failure);
}
}, new Callback1>() {
@Override
public void $invoke(Array strings) {
success.$invoke(assertions);
}
});
}
}
