org.entcore.feeder.aaf.AafFeeder.java Source code

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Here is the source code for org.entcore.feeder.aaf.AafFeeder.java

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/* Copyright  "Open Digital Education", 2014
 *
 * This program is published by "Open Digital Education".
 * You must indicate the name of the software and the company in any production /contribution
 * using the software and indicate on the home page of the software industry in question,
 * "powered by Open Digital Education" with a reference to the website: https://opendigitaleducation.com/.
 *
 * This program is free software, licensed under the terms of the GNU Affero General Public License
 * as published by the Free Software Foundation, version 3 of the License.
 *
 * You can redistribute this application and/or modify it since you respect the terms of the GNU Affero General Public License.
 * If you modify the source code and then use this modified source code in your creation, you must make available the source code of your modifications.
 *
 * You should have received a copy of the GNU Affero General Public License along with the software.
 * If not, please see : <http://www.gnu.org/licenses/>. Full compliance requires reading the terms of this license and following its directives.
    
 *
 */

package org.entcore.feeder.aaf;

import org.entcore.feeder.Feed;
import org.entcore.feeder.dictionary.structures.Importer;
import org.entcore.feeder.utils.ResultMessage;
import io.vertx.core.AsyncResult;
import io.vertx.core.Handler;
import io.vertx.core.Vertx;
import io.vertx.core.buffer.Buffer;
import io.vertx.core.eventbus.Message;
import io.vertx.core.json.JsonArray;
import io.vertx.core.json.JsonObject;
import io.vertx.core.logging.Logger;
import io.vertx.core.logging.LoggerFactory;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

public class AafFeeder implements Feed {

    private static final Logger log = LoggerFactory.getLogger(AafFeeder.class);
    public static final String IMPORT_DIRECTORIES_JSON = "importDirectories.json";
    private final Vertx vertx;
    private final String path;

    public AafFeeder(Vertx vertx, String path) {
        this.vertx = vertx;
        if (path.endsWith(File.separator)) {
            this.path = path.substring(0, path.length() - 1);
        } else {
            this.path = path;
        }
    }

    @Override
    public void launch(final Importer importer, final Handler<Message<JsonObject>> handler) throws Exception {
        vertx.fileSystem().readFile(path + File.separator + IMPORT_DIRECTORIES_JSON,
                new Handler<AsyncResult<Buffer>>() {
                    @Override
                    public void handle(AsyncResult<Buffer> f) {
                        if (f.succeeded()) {
                            final JsonArray importSubDirectories;
                            try {
                                importSubDirectories = new fr.wseduc.webutils.collections.JsonArray(
                                        f.result().toString());
                            } catch (RuntimeException e) {
                                handler.handle(new ResultMessage().error("invalid.importDirectories.file"));
                                log.error("Invalid importDirectories file.", e);
                                return;
                            }
                            vertx.fileSystem().readDir(path, new Handler<AsyncResult<List<String>>>() {
                                @Override
                                public void handle(AsyncResult<List<String>> event) {
                                    if (event.succeeded()) {
                                        final List<String> importsDirs = new ArrayList<>();
                                        for (String dir : event.result()) {
                                            final int idx = dir.lastIndexOf(File.separator);
                                            if (idx >= 0 && dir.length() > idx
                                                    && importSubDirectories.contains(dir.substring(idx + 1))) {
                                                importsDirs.add(dir);
                                            }
                                        }
                                        if (importsDirs.size() < 1) {
                                            handler.handle(new ResultMessage().error("missing.subdirectories"));
                                            return;
                                        }
                                        final Handler<Message<JsonObject>>[] handlers = new Handler[importsDirs
                                                .size()];
                                        handlers[handlers.length - 1] = new Handler<Message<JsonObject>>() {
                                            @Override
                                            public void handle(Message<JsonObject> m) {
                                                handler.handle(m);
                                            }
                                        };
                                        for (int i = importsDirs.size() - 2; i >= 0; i--) {
                                            final int j = i + 1;
                                            handlers[i] = new Handler<Message<JsonObject>>() {
                                                @Override
                                                public void handle(Message<JsonObject> m) {
                                                    if (m != null && "ok".equals(m.body().getString("status"))) {
                                                        new StructureImportProcessing(importsDirs.get(j), vertx)
                                                                .start(handlers[j]);
                                                    } else {
                                                        handler.handle(m);
                                                    }
                                                }
                                            };
                                        }
                                        new StructureImportProcessing(importsDirs.get(0), vertx).start(handlers[0]);
                                    } else {
                                        handler.handle(new ResultMessage().error(event.cause().getMessage()));
                                    }
                                }
                            });
                        } else {
                            new StructureImportProcessing(path, vertx).start(handler);
                        }
                    }
                });
    }

    @Override
    public void launch(Importer importer, String path, Handler<Message<JsonObject>> handler) throws Exception {
        launch(importer, handler);
    }

    @Override
    public String getSource() {
        return "AAF";
    }

}