org.seadpdt.impl.PeopleServicesImpl.java Source code

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/*
 *
 * Copyright 2015 The Trustees of Indiana University, 2015 University of Michigan
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 *
 * @author myersjd@umich.edu
 * @author smccaula@indiana.edu
 */

package org.seadpdt.impl;

import com.mongodb.BasicDBObject;
import com.mongodb.client.FindIterable;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoCursor;
import com.mongodb.client.MongoDatabase;
import com.mongodb.client.result.DeleteResult;
import com.sun.jersey.api.client.ClientResponse.Status;
import org.bson.Document;
import org.json.JSONArray;
import org.json.JSONObject;
import org.seadpdt.PeopleServices;
import org.seadpdt.people.Profile;
import org.seadpdt.people.Provider;
import org.seadpdt.util.MongoDB;

import javax.ws.rs.*;
import javax.ws.rs.core.CacheControl;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.ArrayList;

@Path("/people")
public class PeopleServicesImpl extends PeopleServices {

    public static final String identifier = "identifier";
    public static final String provider = "provider";
    private static MongoDatabase db = MongoDB.getServicesDB();
    private static MongoCollection<Document> peopleCollection = db.getCollection(MongoDB.people);
    private CacheControl control = new CacheControl();

    public PeopleServicesImpl() {
        control.setNoCache(true);
    }

    @POST
    @Path("/")
    @Consumes(MediaType.APPLICATION_JSON)
    @Produces(MediaType.APPLICATION_JSON)
    public Response registerPerson(String personString) {

        JSONObject person = new JSONObject(personString);
        Provider p = null;

        if (person.has(provider)) {
            p = Provider.getProvider((String) person.get(provider));

        }

        if (!person.has(identifier)) {
            return Response.status(Status.BAD_REQUEST)
                    .entity(new BasicDBObject("Failure", "Invalid request format: missing identifier")).build();
        }
        String rawID = (String) person.get(identifier);

        String newID;
        if (p != null) {
            //Know which provider the ID is from (as claimed by the client) so go direct to get its canonical form
            newID = p.getCanonicalId(rawID);
        } else {
            //Don't know the provider, so find it and the canonical ID together
            Profile profile = Provider.findCanonicalId(rawID);
            if (profile != null) {

                p = Provider.getProvider(profile.getProvider());
            } //else no provider recognized the id (e.g. it's a string), so we'll just fail with a null Provier
            if (p == null) {
                return Response.status(Status.BAD_REQUEST)
                        .entity(new BasicDBObject("Failure", "Invalid request format:identifier not recognized"))
                        .build();
            }
            newID = profile.getIdentifier();
        }

        person.put(identifier, newID);

        FindIterable<Document> iter = peopleCollection.find(new Document("@id", newID));
        if (iter.iterator().hasNext()) {
            return Response.status(Status.CONFLICT)
                    .entity(new BasicDBObject("Failure", "Person with Identifier " + newID + " already exists"))
                    .build();
        } else {
            URI resource = null;
            try {

                Document profileDocument = p.getExternalProfile(person);
                peopleCollection.insertOne(profileDocument);
                resource = new URI("./" + profileDocument.getString("@id"));
            } catch (Exception r) {
                return Response.serverError()
                        .entity(new BasicDBObject("failure", "Provider call failed with status: " + r.getMessage()))
                        .build();
            }

            try {
                resource = new URI("./" + newID);
            } catch (URISyntaxException e) {
                // Should not happen given simple ids
                e.printStackTrace();
            }
            return Response.created(resource).entity(new Document("identifier", newID)).build();
        }
    }

    @GET
    @Path("/")
    @Produces(MediaType.APPLICATION_JSON)
    public Response getPeopleList() {
        FindIterable<Document> iter = peopleCollection.find();
        iter.projection(getBasicPersonProjection());

        MongoCursor<Document> cursor = iter.iterator();
        ArrayList<Object> array = new ArrayList<Object>();
        while (cursor.hasNext()) {
            Document next = cursor.next();
            array.add(next);
        }
        Document peopleDocument = new Document();
        peopleDocument.put("persons", array);
        peopleDocument.put("@context", getPersonContext());
        return Response.ok(peopleDocument.toJson()).cacheControl(control).build();
    }

    @GET
    @Path("/list/")
    @Produces(MediaType.APPLICATION_JSON)
    public Response getPeopleListAsArray() {
        FindIterable<Document> iter = peopleCollection.find();
        iter.projection(getBasicPersonProjection());

        MongoCursor<Document> cursor = iter.iterator();
        JSONArray array = new JSONArray();
        while (cursor.hasNext()) {
            Document next = cursor.next();
            next.put("@context", getPersonContext());
            array.put(next);
        }
        return Response.ok(array.toString()).cacheControl(control).build();
    }

    @GET
    @Path("/{id}")
    @Produces(MediaType.APPLICATION_JSON)
    public Response getPersonProfile(@PathParam("id") String id) {
        Profile profile = null;
        try {
            profile = Provider.findCanonicalId(id);
        } catch (Exception e) {
            return Response.status(Response.Status.CONFLICT)
                    .entity(new BasicDBObject("failure", "Ambiguous identifier")).build();
        }
        if (profile == null) {
            return Response.status(Response.Status.NOT_FOUND)
                    .entity(new BasicDBObject("failure", "Person with identifier " + id + " not found")).build();
        }
        Document document = retrieveProfile(profile.getIdentifier());
        if (document != null) {
            return Response.ok(document.toJson()).build();
        } else {
            return Response.status(Status.NOT_FOUND)
                    .entity(new BasicDBObject("failure", "Person with identifier " + id + " not found")).build();
        }
    }

    @PUT
    @Path("/{id}")
    @Consumes(MediaType.APPLICATION_JSON)
    public Response updatePersonProfile(@PathParam("id") String id) {
        Profile profile = null;
        try {
            profile = Provider.findCanonicalId(id);
        } catch (Exception e) {
            return Response.status(Response.Status.CONFLICT)
                    .entity(new BasicDBObject("failure", "Ambiguous identifier")).build();
        }
        if (profile == null) {
            return Response.status(Response.Status.NOT_FOUND)
                    .entity(new BasicDBObject("failure", "Person with identifier " + id + " not found")).build();
        }
        id = profile.getIdentifier();
        Document profileDoc = retrieveProfile(id);
        if (profileDoc != null) {
            String providerName = profileDoc.getString(provider);
            try {
                profileDoc = Provider.getProvider(providerName).getExternalProfile(profile.asJson());
            } catch (RuntimeException r) {
                return Response.serverError()
                        .entity(new BasicDBObject("failure", "Provider call failed with status: " + r.getMessage()))
                        .build();
            }

            peopleCollection.replaceOne(new Document("@id", id), profileDoc);
            return Response.ok(new BasicDBObject("response", "Successfully updated person with identifier " + id))
                    .build();

        } else {
            return Response.status(Status.NOT_FOUND)
                    .entity(new BasicDBObject("failure", "Person with identifier " + id + " not found")).build();

        }
    }

    @DELETE
    @Path("/{id}")
    public Response unregisterPerson(@PathParam("id") String id) {
        Profile profile = null;
        try {
            profile = Provider.findCanonicalId(id);
        } catch (Exception e) {
            return Response.status(Response.Status.CONFLICT)
                    .entity(new BasicDBObject("failure", "Ambiguous identifier")).build();
        }
        if (profile == null) {
            return Response.status(Response.Status.NOT_FOUND)
                    .entity(new BasicDBObject("failure", "Person with identifier " + id + " not found")).build();
        }
        id = profile.getIdentifier();
        DeleteResult result = peopleCollection.deleteOne(new Document("@id", id));
        if (result.getDeletedCount() == 0) {
            return Response.status(Status.NOT_FOUND)
                    .entity(new BasicDBObject("failure", "Person with identifier " + id + " not found")).build();
        } else {
            return Response.ok(new BasicDBObject("response", "Successfully deleted person with identifier " + id))
                    .build();
        }
    }

    @GET
    @Path("/canonical/{id}")
    @Produces(MediaType.TEXT_PLAIN)
    public Response getCanonicalID(@PathParam("id") String id) {
        Profile profile = null;
        try {
            profile = Provider.findCanonicalId(id);
        } catch (Exception e) {
            return Response.status(Response.Status.CONFLICT)
                    .entity(new BasicDBObject("failure", "Ambiguous identifier")).build();
        }
        if (profile == null) {
            return Response.status(Response.Status.NOT_FOUND)
                    .entity(new BasicDBObject("failure", "Person with identifier " + id + " not found")).build();
        }
        return Response.ok(profile.getIdentifier()).build();
    }

    static private Document getPersonContext() {
        Document contextDocument = new Document();
        contextDocument.put("givenName", "http://schema.org/Person/givenName");
        contextDocument.put("familyName", "http://schema.org/Person/familyName");
        contextDocument.put("email", "http://schema.org/Person/email");
        contextDocument.put("affiliation", "http://schema.org/Person/affiliation");
        contextDocument.put("PersonalProfileDocument", "http://schema.org/Thing/mainEntityOfPage");
        return contextDocument;
    }

    static protected Document getBasicPersonProjection() {
        return new Document("givenName", 1).append("familyName", 1).append("@id", 1).append("email", 1)
                .append("affiliation", 1).append("PersonalProfileDocument", 1).append("_id", 0);
    }

    static Document retrieveProfile(String canonicalID) {

        Document document = null;
        FindIterable<Document> iter = peopleCollection.find(new Document("@id", canonicalID));
        iter.projection(getBasicPersonProjection());
        if (iter.first() != null) {
            document = iter.first();
            document.put("@context", getPersonContext());
        }

        return document;
    }

}