Thomas Vachuska | 02aeb03 | 2015-01-06 22:36:30 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015 Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.onosproject.common.app; |
| 17 | |
| 18 | import com.google.common.collect.ImmutableSet; |
| 19 | import com.google.common.io.ByteStreams; |
| 20 | import com.google.common.io.Files; |
| 21 | import org.apache.commons.configuration.ConfigurationException; |
| 22 | import org.apache.commons.configuration.XMLConfiguration; |
| 23 | import org.onlab.util.Tools; |
| 24 | import org.onosproject.app.ApplicationDescription; |
| 25 | import org.onosproject.app.ApplicationEvent; |
| 26 | import org.onosproject.app.ApplicationException; |
| 27 | import org.onosproject.app.ApplicationStoreDelegate; |
| 28 | import org.onosproject.app.DefaultApplicationDescription; |
| 29 | import org.onosproject.core.Permission; |
| 30 | import org.onosproject.core.Version; |
| 31 | import org.onosproject.store.AbstractStore; |
| 32 | import org.slf4j.Logger; |
| 33 | import org.slf4j.LoggerFactory; |
| 34 | |
| 35 | import java.io.ByteArrayInputStream; |
| 36 | import java.io.File; |
| 37 | import java.io.FileInputStream; |
| 38 | import java.io.FileNotFoundException; |
| 39 | import java.io.IOException; |
| 40 | import java.io.InputStream; |
| 41 | import java.net.URI; |
Thomas Vachuska | 90b453f | 2015-01-30 18:57:14 -0800 | [diff] [blame^] | 42 | import java.nio.file.NoSuchFileException; |
Thomas Vachuska | 02aeb03 | 2015-01-06 22:36:30 -0800 | [diff] [blame] | 43 | import java.util.Set; |
| 44 | import java.util.zip.ZipEntry; |
| 45 | import java.util.zip.ZipInputStream; |
| 46 | |
| 47 | import static com.google.common.io.ByteStreams.toByteArray; |
| 48 | import static com.google.common.io.Files.createParentDirs; |
| 49 | import static com.google.common.io.Files.write; |
| 50 | |
| 51 | /** |
| 52 | * Facility for reading application archive stream and managing application |
| 53 | * directory structure. |
| 54 | */ |
| 55 | public class ApplicationArchive |
| 56 | extends AbstractStore<ApplicationEvent, ApplicationStoreDelegate> { |
| 57 | |
| 58 | private static final String NAME = "[@name]"; |
| 59 | private static final String ORIGIN = "[@origin]"; |
| 60 | private static final String VERSION = "[@version]"; |
| 61 | private static final String FEATURES_REPO = "[@featuresRepo]"; |
| 62 | private static final String FEATURES = "[@features]"; |
| 63 | private static final String DESCRIPTION = "description"; |
| 64 | |
| 65 | private static Logger log = LoggerFactory.getLogger(ApplicationArchive.class); |
| 66 | private static final String APP_XML = "app.xml"; |
Thomas Vachuska | 90b453f | 2015-01-30 18:57:14 -0800 | [diff] [blame^] | 67 | private static final String M2_PREFIX = "m2"; |
| 68 | |
| 69 | private static final String KARAF_ROOT = "."; |
| 70 | private static final String M2_ROOT = "system/"; |
Thomas Vachuska | 02aeb03 | 2015-01-06 22:36:30 -0800 | [diff] [blame] | 71 | private static final String APPS_ROOT = "data/apps/"; |
| 72 | |
Thomas Vachuska | 90b453f | 2015-01-30 18:57:14 -0800 | [diff] [blame^] | 73 | private File karafRoot = new File(KARAF_ROOT); |
| 74 | private File m2Dir = new File(karafRoot, M2_ROOT); |
| 75 | private File appsDir = new File(karafRoot, APPS_ROOT); |
Thomas Vachuska | 02aeb03 | 2015-01-06 22:36:30 -0800 | [diff] [blame] | 76 | |
| 77 | /** |
| 78 | * Sets the root directory where application artifacts are kept. |
| 79 | * |
| 80 | * @param appsRoot top-level applications directory path |
| 81 | */ |
Thomas Vachuska | 90b453f | 2015-01-30 18:57:14 -0800 | [diff] [blame^] | 82 | protected void setRootPath(String appsRoot) { |
| 83 | this.karafRoot = new File(appsRoot); |
| 84 | this.appsDir = new File(karafRoot, APPS_ROOT); |
| 85 | this.m2Dir = new File(karafRoot, M2_ROOT); |
Thomas Vachuska | 02aeb03 | 2015-01-06 22:36:30 -0800 | [diff] [blame] | 86 | } |
| 87 | |
| 88 | /** |
| 89 | * Returns the root directory where application artifacts are kept. |
| 90 | * |
| 91 | * @return top-level applications directory path |
| 92 | */ |
Thomas Vachuska | 90b453f | 2015-01-30 18:57:14 -0800 | [diff] [blame^] | 93 | protected String getRootPath() { |
| 94 | return karafRoot.getPath(); |
Thomas Vachuska | 02aeb03 | 2015-01-06 22:36:30 -0800 | [diff] [blame] | 95 | } |
| 96 | |
| 97 | /** |
| 98 | * Returns the set of installed application names. |
| 99 | * |
| 100 | * @return installed application names |
| 101 | */ |
| 102 | public Set<String> getApplicationNames() { |
| 103 | ImmutableSet.Builder<String> names = ImmutableSet.builder(); |
| 104 | File[] files = appsDir.listFiles(File::isDirectory); |
| 105 | if (files != null) { |
| 106 | for (File file : files) { |
| 107 | names.add(file.getName()); |
| 108 | } |
| 109 | } |
| 110 | return names.build(); |
| 111 | } |
| 112 | |
| 113 | /** |
| 114 | * Loads the application descriptor from the specified application archive |
| 115 | * stream and saves the stream in the appropriate application archive |
| 116 | * directory. |
| 117 | * |
| 118 | * @param appName application name |
| 119 | * @return application descriptor |
| 120 | * @throws org.onosproject.app.ApplicationException if unable to read application description |
| 121 | */ |
| 122 | public ApplicationDescription getApplicationDescription(String appName) { |
| 123 | try { |
| 124 | return loadAppDescription(new XMLConfiguration(appFile(appName, APP_XML))); |
| 125 | } catch (Exception e) { |
| 126 | throw new ApplicationException("Unable to get app description", e); |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | /** |
| 131 | * Loads the application descriptor from the specified application archive |
| 132 | * stream and saves the stream in the appropriate application archive |
| 133 | * directory. |
| 134 | * |
| 135 | * @param stream application archive stream |
| 136 | * @return application descriptor |
| 137 | * @throws org.onosproject.app.ApplicationException if unable to read the |
| 138 | * archive stream or store |
| 139 | * the application archive |
| 140 | */ |
| 141 | public ApplicationDescription saveApplication(InputStream stream) { |
| 142 | try (InputStream ais = stream) { |
| 143 | byte[] cache = toByteArray(ais); |
| 144 | InputStream bis = new ByteArrayInputStream(cache); |
| 145 | ApplicationDescription desc = parseAppDescription(bis); |
| 146 | bis.reset(); |
| 147 | |
| 148 | expandApplication(bis, desc); |
| 149 | bis.reset(); |
| 150 | |
| 151 | saveApplication(bis, desc); |
| 152 | installArtifacts(desc); |
| 153 | return desc; |
| 154 | } catch (IOException e) { |
| 155 | throw new ApplicationException("Unable to save application", e); |
| 156 | } |
| 157 | } |
| 158 | |
| 159 | /** |
| 160 | * Purges the application archive directory. |
| 161 | * |
| 162 | * @param appName application name |
| 163 | */ |
| 164 | public void purgeApplication(String appName) { |
| 165 | try { |
| 166 | Tools.removeDirectory(new File(appsDir, appName)); |
| 167 | } catch (IOException e) { |
| 168 | throw new ApplicationException("Unable to purge application " + appName, e); |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | /** |
| 173 | * Returns application archive stream for the specified application. |
| 174 | * |
| 175 | * @param appName application name |
| 176 | * @return application archive stream |
| 177 | */ |
| 178 | public InputStream getApplicationInputStream(String appName) { |
| 179 | try { |
| 180 | return new FileInputStream(appFile(appName, appName + ".zip")); |
| 181 | } catch (FileNotFoundException e) { |
| 182 | throw new ApplicationException("Application " + appName + " not found"); |
| 183 | } |
| 184 | } |
| 185 | |
| 186 | // Scans the specified ZIP stream for app.xml entry and parses it producing |
| 187 | // an application descriptor. |
| 188 | private ApplicationDescription parseAppDescription(InputStream stream) |
| 189 | throws IOException { |
| 190 | try (ZipInputStream zis = new ZipInputStream(stream)) { |
| 191 | ZipEntry entry; |
| 192 | while ((entry = zis.getNextEntry()) != null) { |
| 193 | if (entry.getName().equals(APP_XML)) { |
| 194 | byte[] data = new byte[(int) entry.getSize()]; |
| 195 | ByteStreams.readFully(zis, data); |
| 196 | XMLConfiguration cfg = new XMLConfiguration(); |
| 197 | try { |
| 198 | cfg.load(new ByteArrayInputStream(data)); |
| 199 | return loadAppDescription(cfg); |
| 200 | } catch (ConfigurationException e) { |
| 201 | throw new IOException("Unable to parse " + APP_XML, e); |
| 202 | } |
| 203 | } |
| 204 | zis.closeEntry(); |
| 205 | } |
| 206 | } |
| 207 | throw new IOException("Unable to locate " + APP_XML); |
| 208 | } |
| 209 | |
| 210 | private ApplicationDescription loadAppDescription(XMLConfiguration cfg) { |
| 211 | cfg.setAttributeSplittingDisabled(true); |
| 212 | String name = cfg.getString(NAME); |
| 213 | Version version = Version.version(cfg.getString(VERSION)); |
| 214 | String desc = cfg.getString(DESCRIPTION); |
| 215 | String origin = cfg.getString(ORIGIN); |
| 216 | Set<Permission> perms = ImmutableSet.of(); |
| 217 | String featRepo = cfg.getString(FEATURES_REPO); |
| 218 | URI featuresRepo = featRepo != null ? URI.create(featRepo) : null; |
| 219 | Set<String> features = ImmutableSet.copyOf(cfg.getString(FEATURES).split(",")); |
| 220 | |
| 221 | return new DefaultApplicationDescription(name, version, desc, origin, |
| 222 | perms, featuresRepo, features); |
| 223 | } |
| 224 | |
| 225 | // Expands the specified ZIP stream into app-specific directory. |
| 226 | private void expandApplication(InputStream stream, ApplicationDescription desc) |
| 227 | throws IOException { |
| 228 | ZipInputStream zis = new ZipInputStream(stream); |
| 229 | ZipEntry entry; |
| 230 | File appDir = new File(appsDir, desc.name()); |
| 231 | while ((entry = zis.getNextEntry()) != null) { |
| 232 | byte[] data = new byte[(int) entry.getSize()]; |
| 233 | ByteStreams.readFully(zis, data); |
| 234 | zis.closeEntry(); |
| 235 | |
| 236 | File file = new File(appDir, entry.getName()); |
| 237 | createParentDirs(file); |
| 238 | write(data, file); |
| 239 | } |
| 240 | zis.close(); |
| 241 | } |
| 242 | |
| 243 | // Saves the specified ZIP stream into a file under app-specific directory. |
| 244 | private void saveApplication(InputStream stream, ApplicationDescription desc) |
| 245 | throws IOException { |
| 246 | Files.write(toByteArray(stream), appFile(desc.name(), desc.name() + ".zip")); |
| 247 | } |
| 248 | |
| 249 | // Installs application artifacts into M2 repository. |
Thomas Vachuska | 90b453f | 2015-01-30 18:57:14 -0800 | [diff] [blame^] | 250 | private void installArtifacts(ApplicationDescription desc) throws IOException { |
| 251 | try { |
| 252 | Tools.copyDirectory(appFile(desc.name(), M2_PREFIX), m2Dir); |
| 253 | } catch (NoSuchFileException e) { |
| 254 | log.debug("Application {} has no M2 artifacts", desc.name()); |
| 255 | } |
Thomas Vachuska | 02aeb03 | 2015-01-06 22:36:30 -0800 | [diff] [blame] | 256 | } |
| 257 | |
Thomas Vachuska | 90b453f | 2015-01-30 18:57:14 -0800 | [diff] [blame^] | 258 | /** |
| 259 | * Marks the app as active by creating token file in the app directory. |
| 260 | * |
| 261 | * @param appName application name |
| 262 | * @return true if file was created |
| 263 | */ |
Thomas Vachuska | 02aeb03 | 2015-01-06 22:36:30 -0800 | [diff] [blame] | 264 | protected boolean setActive(String appName) { |
| 265 | try { |
| 266 | return appFile(appName, "active").createNewFile(); |
| 267 | } catch (IOException e) { |
| 268 | throw new ApplicationException("Unable to mark app as active", e); |
| 269 | } |
| 270 | } |
| 271 | |
Thomas Vachuska | 90b453f | 2015-01-30 18:57:14 -0800 | [diff] [blame^] | 272 | /** |
| 273 | * Clears the app as active by deleting token file in the app directory. |
| 274 | * |
| 275 | * @param appName application name |
| 276 | * @return true if file was deleted |
| 277 | */ |
Thomas Vachuska | 02aeb03 | 2015-01-06 22:36:30 -0800 | [diff] [blame] | 278 | protected boolean clearActive(String appName) { |
| 279 | return appFile(appName, "active").delete(); |
| 280 | } |
| 281 | |
Thomas Vachuska | 90b453f | 2015-01-30 18:57:14 -0800 | [diff] [blame^] | 282 | /** |
| 283 | * Indicates whether the app was marked as active by checking for token file. |
| 284 | * |
| 285 | * @param appName application name |
| 286 | * @return true if the app is marked as active |
| 287 | */ |
Thomas Vachuska | 02aeb03 | 2015-01-06 22:36:30 -0800 | [diff] [blame] | 288 | protected boolean isActive(String appName) { |
| 289 | return appFile(appName, "active").exists(); |
| 290 | } |
| 291 | |
| 292 | |
| 293 | // Returns the name of the file located under the specified app directory. |
| 294 | private File appFile(String appName, String fileName) { |
| 295 | return new File(new File(appsDir, appName), fileName); |
| 296 | } |
| 297 | |
| 298 | } |