001/* 002 * (C) Copyright 2016 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * Florent Guillaume 018 */ 019package org.nuxeo.connect.update.task.guards; 020 021import org.nuxeo.connect.update.Package; 022import org.nuxeo.connect.update.PackageException; 023import org.nuxeo.connect.update.PackageState; 024import org.nuxeo.connect.update.PackageUpdateService; 025 026/** 027 * Helper to access the package update service from JEXL. 028 * 029 * @since 8.4 030 */ 031public class PackagesHelper { 032 033 private final PackageUpdateService service; 034 035 public PackagesHelper(PackageUpdateService service) { 036 this.service = service; 037 } 038 039 public boolean contains(String name) { 040 try { 041 if (name.contains(":")) { 042 // exact version 043 name = name.replace(':', '-'); 044 Package pkg = service.getPackage(name); 045 return pkg != null && isPackageInstalled(pkg); 046 } else { 047 // any version 048 for (Package pkg : service.getPackages()) { 049 // multiple packages can have the same name (not id), 050 // iterate until an installed one is found. 051 if (pkg.getName().equals(name) && isPackageInstalled(pkg)) { 052 return true; 053 } 054 } 055 return false; 056 } 057 } catch (PackageException e) { 058 return false; 059 } 060 } 061 062 protected boolean isPackageInstalled(Package pkg) { 063 PackageState state = pkg.getPackageState(); 064 switch (state) { 065 case INSTALLING: 066 case INSTALLED: 067 case STARTED: 068 return true; 069 default: 070 return false; 071 } 072 } 073 074}