Example usage for io.vertx.core.file FileSystem readDir

Introduction

In this page you can find the example usage for io.vertx.core.file FileSystem readDir.

Prototype

@Fluent
FileSystem readDir(String path, String filter, Handler<AsyncResult<List<String>>> handler);

Source Link

Document

Read the contents of the directory specified by path , asynchronously.

Usage

From source file:org.entcore.feeder.csv.CsvImportsLauncher.java

License:Open Source License

@Override
public void handle(Long event) {
    final FileSystem fs = vertx.fileSystem();
    fs.readDir(path, ".*.zip", new Handler<AsyncResult<List<String>>>() {
        @Override//from  w  ww .j av  a 2  s .  c o  m
        public void handle(final AsyncResult<List<String>> event) {
            if (event.succeeded()) {
                Collections.sort(event.result());
                final Handler[] handlers = new Handler[event.result().size() + 1];
                handlers[handlers.length - 1] = new Handler<Void>() {
                    @Override
                    public void handle(Void v) {
                        postImport.execute();
                    }
                };
                for (int i = event.result().size() - 1; i >= 0; i--) {
                    final int j = i;
                    handlers[i] = new Handler<Void>() {
                        @Override
                        public void handle(Void v) {
                            final String file = event.result().get(j);
                            log.info("Importing file : " + file);
                            Matcher matcher;
                            Matcher nameMatcher;
                            if (file != null && (matcher = UAI_PATTERN.matcher(file)).find()
                                    && (nameMatcher = namePattern.matcher(file)).find()) {
                                final String uai = matcher.group(1);
                                final String structureName = nameMatcher.group(1);
                                TransactionManager.getNeo4jHelper().execute(
                                        "MATCH (s:Structure {UAI:{uai}}) return s.externalId as externalId",
                                        new JsonObject().put("uai", uai), new Handler<Message<JsonObject>>() {
                                            @Override
                                            public void handle(Message<JsonObject> event) {
                                                final String structureExternalId;
                                                JsonArray res = event.body().getJsonArray("result");
                                                if ("ok".equals(event.body().getString("status"))
                                                        && res.size() > 0) {
                                                    structureExternalId = res.getJsonObject(0)
                                                            .getString("externalId");
                                                } else {
                                                    structureExternalId = null;
                                                }
                                                final String parentDir = path + File.separator
                                                        + UUID.randomUUID().toString();
                                                final String dirName = parentDir + File.separator
                                                        + structureName
                                                        + (structureExternalId != null
                                                                ? "@" + structureExternalId
                                                                : "")
                                                        + "_" + uai;
                                                fs.mkdirs(dirName, new Handler<AsyncResult<Void>>() {
                                                    @Override
                                                    public void handle(AsyncResult<Void> event) {
                                                        try {
                                                            FileUtils.unzip(file.replaceAll("\\s", "%20"),
                                                                    dirName);
                                                            moveCsvFiles(structureExternalId, fs, dirName,
                                                                    parentDir, handlers, j);
                                                        } catch (IOException e) {
                                                            fs.deleteRecursive(parentDir, true, null);
                                                            log.error("Error unzip : " + file, e);
                                                            handlers[j + 1].handle(null);
                                                        }
                                                    }
                                                });
                                            }
                                        });
                            } else {
                                log.error("UAI not found in filename : " + file);
                                handlers[j + 1].handle(null);
                            }
                        }
                    };
                }
                handlers[0].handle(null);
            } else {
                log.error("Error reading directory.");
            }
        }
    });
}

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From source file:org.entcore.feeder.csv.CsvImportsLauncher.java

License:Open Source License

private void moveCsvFiles(final String structureExternalId, final FileSystem fs, final String dirName,
        final String parentDir, final Handler<Void>[] handlers, final int j) {
    fs.readDir(dirName, ".*.csv", new Handler<AsyncResult<List<String>>>() {
        @Override/*  w w  w .ja v  a2s  .  c o  m*/
        public void handle(final AsyncResult<List<String>> l) {
            if (l.succeeded()) {
                final int size = l.result().size();
                if (!(size > 0)) {
                    emptyDirectory(fs, parentDir, handlers, j);
                    return;
                }

                final AtomicInteger validFilesCount = new AtomicInteger(size);
                final AtomicInteger count = new AtomicInteger(size);
                for (final String f : l.result()) {
                    String profile = null;
                    for (String profilePattern : profiles.fieldNames()) {
                        if (f.contains(profilePattern)) {
                            profile = profiles.getString(profilePattern);
                            break;
                        }
                    }
                    if (profile == null) {
                        validFilesCount.decrementAndGet();
                        fs.delete(f, new Handler<AsyncResult<Void>>() {
                            @Override
                            public void handle(AsyncResult<Void> event) {
                                if (count.decrementAndGet() == 0) {
                                    importFiles(validFilesCount, parentDir, structureExternalId, handlers, j,
                                            fs);
                                }
                            }
                        });
                        continue;
                    }

                    fs.move(f, dirName + File.separator + profile + ".csv", new Handler<AsyncResult<Void>>() {
                        @Override
                        public void handle(AsyncResult<Void> event2) {
                            if (event2.succeeded()) {
                                if (count.decrementAndGet() == 0) {
                                    importFiles(validFilesCount, parentDir, structureExternalId, handlers, j,
                                            fs);
                                }
                            } else {
                                fs.deleteRecursive(parentDir, true, null);
                                log.error("Error mv csv file : " + f, l.cause());
                                handlers[j + 1].handle(null);
                            }
                        }
                    });
                }
            } else {
                fs.deleteRecursive(parentDir, true, null);
                log.error("Error listing csv in directory : " + dirName, l.cause());
                handlers[j + 1].handle(null);
            }
        }
    });
}

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