| /* |
| * Copyright (c) 2017, EPAM SYSTEMS INC |
| * |
| * 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. |
| */ |
| |
| package com.epam.dlab.backendapi.service; |
| |
| import com.epam.dlab.auth.UserInfo; |
| import com.epam.dlab.backendapi.dao.BaseBillingDAO; |
| import com.epam.dlab.backendapi.dao.BillingDAO; |
| import com.epam.dlab.backendapi.resources.dto.BillingFilter; |
| import com.epam.dlab.backendapi.util.CSVFormatter; |
| import com.epam.dlab.exceptions.DlabException; |
| import com.google.inject.Inject; |
| import jersey.repackaged.com.google.common.collect.Lists; |
| import lombok.extern.slf4j.Slf4j; |
| import org.bson.Document; |
| |
| import java.text.ParseException; |
| import java.util.List; |
| |
| @Slf4j |
| public abstract class BillingService<T extends BillingFilter> { |
| |
| @Inject |
| private BillingDAO billingDAO; |
| |
| public Document getReport(UserInfo userInfo, T filter) { |
| log.trace("Get billing report for user {} with filter {}", userInfo.getName(), filter); |
| try { |
| return billingDAO.getReport(userInfo, filter); |
| } catch (RuntimeException t) { |
| log.error("Cannot load billing report for user {} with filter {}", userInfo.getName(), filter, t); |
| throw new DlabException("Cannot load billing report: " + t.getLocalizedMessage(), t); |
| } |
| } |
| |
| protected String getValueOrEmpty(Document document, String key) { |
| String value = document.getString(key); |
| return value == null ? "" : value; |
| } |
| |
| String getHeaders(boolean full) { |
| return CSVFormatter.formatLine(getHeadersList(full), CSVFormatter.SEPARATOR); |
| } |
| |
| public Document getBillingReport(UserInfo userInfo, T filter) { |
| filter.getUser().replaceAll(s -> s.equalsIgnoreCase(BaseBillingDAO.SHARED_RESOURCE_NAME) ? null : s); |
| return getReport(userInfo, filter); |
| } |
| |
| public byte[] downloadReport(UserInfo userInfo, T filter) { |
| return prepareReport(getReport(userInfo, filter)).getBytes(); |
| } |
| |
| String prepareReport(Document document) { |
| try { |
| StringBuilder builder = |
| new StringBuilder(CSVFormatter.formatLine(Lists.newArrayList(getFirstLine(document)), |
| CSVFormatter.SEPARATOR, '\"')); |
| |
| Boolean full = (Boolean) document.get(BaseBillingDAO.FULL_REPORT); |
| builder.append(getHeaders(full)); |
| |
| @SuppressWarnings("unchecked") |
| List<Document> items = (List<Document>) document.get(BaseBillingDAO.ITEMS); |
| |
| items.forEach(d -> builder.append(getLine(full, d))); |
| |
| builder.append(getTotal(full, document)); |
| |
| return builder.toString(); |
| } catch (ParseException e) { |
| throw new DlabException("Cannot prepare CSV file", e); |
| } |
| } |
| |
| public abstract String getFirstLine(Document document) throws ParseException; |
| |
| public abstract List<String> getHeadersList(boolean full); |
| |
| public abstract String getLine(boolean full, Document document); |
| |
| public abstract String getTotal(boolean full, Document document); |
| |
| public abstract String getReportFileName(UserInfo userInfo, T filter); |
| } |