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   1 /**
   2  *  This document is a part of the source code and related artifacts
   3  *  for CollectionSpace, an open source collections management system
   4  *  for museums and related institutions:
   5
   6  *  http://www.collectionspace.org
   7  *  http://wiki.collectionspace.org
   8
   9  *  Copyright 2009 University of California at Berkeley
  10
  11  *  Licensed under the Educational Community License (ECL), Version 2.0.
  12  *  You may not use this file except in compliance with this License.
  13
  14  *  You may obtain a copy of the ECL 2.0 License at
  15
  16  *  https://source.collectionspace.org/collection-space/LICENSE.txt
  17
  18  *  Unless required by applicable law or agreed to in writing, software
  19  *  distributed under the License is distributed on an "AS IS" BASIS,
  20  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  21  *  See the License for the specific language governing permissions and
  22  *  limitations under the License.
  23  */
  24 package org.collectionspace.services.common.config;
  25
  26 import java.io.File;
  27 import java.io.FileInputStream;
  28 import java.io.IOException;
  29 import java.io.InputStream;
  30 import java.util.ArrayList;
  31 import java.util.Enumeration;
  32 import java.util.Hashtable;
  33 import java.util.List;
  34
  35 import org.apache.commons.io.FileUtils;
  36 import org.collectionspace.services.common.ServiceMain;
  37 import org.collectionspace.services.common.api.JEEServerDeployment;
  38 import org.collectionspace.services.common.api.Tools;
  39 import org.collectionspace.services.config.service.ServiceBindingType;
  40 import org.collectionspace.services.config.service.ServiceObjectType;
  41 import org.collectionspace.services.config.tenant.RepositoryDomainType;
  42 import org.collectionspace.services.config.tenant.TenantBindingConfig;
  43 import org.collectionspace.services.config.tenant.TenantBindingType;
  44 import org.collectionspace.services.config.types.PropertyItemType;
  45
  46 import ch.elca.el4j.services.xmlmerge.Configurer;
  47 import ch.elca.el4j.services.xmlmerge.config.AttributeMergeConfigurer;
  48 import ch.elca.el4j.services.xmlmerge.config.ConfigurableXmlMerge;
  49
  50 import org.slf4j.Logger;
  51 import org.slf4j.LoggerFactory;
  52
  53 /**
  54  * ServicesConfigReader reads service layer specific configuration
  55  *
  56  * $LastChangedRevision: $
  57  * $LastChangedDate: $
  58  */
  59 public class TenantBindingConfigReaderImpl
  60         extends AbstractConfigReaderImpl<List<TenantBindingType>> {
  61     final private static String TENANT_BINDINGS_ERROR = "Tenant bindings error: ";
  62     final private static String TENANT_BINDINGS_DELTA_FILENAME = JEEServerDeployment.TENANT_BINDINGS_FILENAME_PREFIX + ".delta.xml";
  63     final private static String MERGED_SUFFIX = ".merged.xml";
  64
  65     final Logger logger = LoggerFactory.getLogger(TenantBindingConfigReaderImpl.class);
  66     private List<TenantBindingType> tenantBindingTypeList;
  67     //tenant id, tenant binding
  68     private Hashtable<String, TenantBindingType> tenantBindings =
  69             new Hashtable<String, TenantBindingType>();
  70     //repository domains
  71     private Hashtable<String, RepositoryDomainType> domains =
  72             new Hashtable<String, RepositoryDomainType>();
  73     //tenant-qualified servicename, service binding
  74     private Hashtable<String, ServiceBindingType> serviceBindings =
  75             new Hashtable<String, ServiceBindingType>();
  76
  77     //tenant-qualified service object name to service name, service binding
  78     private Hashtable<String, ServiceBindingType> docTypes =
  79             new Hashtable<String, ServiceBindingType>();
  80
  81
  82     public TenantBindingConfigReaderImpl(String serverRootDir) {
  83         super(serverRootDir);
  84     }
  85
  86     @Override
  87     public String getFileName() {
  88         return TENANT_BINDINGS_DELTA_FILENAME;
  89     }
  90
  91         protected File getTenantsRootDir() {
  92                 File result = null;
  93                 String errMessage = null;
  94                 try {
  95                         String tenantsRootPath = getConfigRootDir() + File.separator + JEEServerDeployment.TENANT_BINDINGS_ROOTDIRNAME;
  96                         File tenantsRootDir = new File(tenantsRootPath);
  97                         if (tenantsRootDir.exists() == true) {
  98                                 result = tenantsRootDir;
  99                                 if (logger.isDebugEnabled() == true) {
 100                                         logger.debug("The home directory for all tenants is at: " + result.getCanonicalPath());
 101                                 }
 102                         } else {
 103                                 errMessage = "The home directory for all tenants is missing or inaccesible: ";
 104                                 try {
 105                                         errMessage = errMessage + tenantsRootDir.getCanonicalPath();
 106                                 } catch (IOException ioException) {
 107                                         errMessage = errMessage + tenantsRootDir.getAbsolutePath();
 108                                 }
 109                         }
 110                 } catch (IOException e) {
 111                         // Log this exception, but continue anyway.  Caller should handle the null result gracefully.
 112                         logger.equals(e);
 113                 }
 114
 115                 if (errMessage != null) {
 116                         logger.error(errMessage);
 117                 }
 118
 119                 return result;
 120         }
 121
 122     /*
 123      * Take the directory of the prototype bindings and the directory of the delta bindings.  Merge the two and create (replace) a file
 124      * named "tenant-bindings.xml"
 125      */
 126
 127         private InputStream merge(File srcFile, File deltaFile) throws IOException {
 128                 InputStream result = null;
 129                 try {
 130                         FileInputStream srcStream = new FileInputStream(srcFile);
 131                         FileInputStream deltaStream = new FileInputStream(deltaFile);
 132                         InputStream[] inputStreamArray = {srcStream, deltaStream};
 133
 134                         Configurer configurer = new AttributeMergeConfigurer();
 135                         result = new ConfigurableXmlMerge(configurer).merge(inputStreamArray);
 136                 } catch (Exception e) {
 137                         logger.error("Could not merge tenant configuration delta file: " +
 138                                         deltaFile.getCanonicalPath(), e);
 139                 }
 140                 //
 141                 // Try to save the merge output to a file that is suffixed with ".merged.xml" in the same directory
 142                 // as the delta file.
 143                 //
 144                 if (result != null) {
 145                         File outputDir = deltaFile.getParentFile();
 146                         String mergedFileName = outputDir.getAbsolutePath() + File.separator +
 147                                         JEEServerDeployment.TENANT_BINDINGS_FILENAME_PREFIX + MERGED_SUFFIX;
 148                         File mergedOutFile = new File(mergedFileName);
 149                         try {
 150                                 FileUtils.copyInputStreamToFile(result, mergedOutFile);
 151                         } catch (IOException e) {
 152                                 logger.warn("Could not create a copy of the merged tenant configuration at: " +
 153                                                 mergedFileName, e);
 154                         }
 155                         result.reset(); //reset the stream even if the file create failed.
 156                 }
 157
 158                 return result;
 159         }
 160
 161     @Override
 162     public void read(boolean useAppGeneratedBindings) throws Exception {
 163         String tenantsRootPath = getTenantsRootDir().getAbsolutePath();
 164         read(tenantsRootPath, useAppGeneratedBindings);
 165     }
 166
 167     @Override
 168     public void read(String tenantRootDirPath, boolean useAppGeneratedBindings) throws Exception {
 169         File tenantsRootDir = new File(tenantRootDirPath);
 170         if (tenantsRootDir.exists() == false) {
 171                 throw new Exception("Cound not find tenant bindings root directory: " +
 172                                 tenantRootDirPath);
 173         }
 174         File protoBindingsFile = new File(tenantRootDirPath + File.separator +
 175                         JEEServerDeployment.TENANT_BINDINGS_PROTOTYPE_FILENAME);
 176
 177         List<File> tenantDirs = getDirectories(tenantsRootDir);
 178         tenantBindingTypeList = readTenantConfigs(protoBindingsFile, tenantDirs);
 179
 180         for (TenantBindingType tenantBinding : tenantBindingTypeList) {
 181                 if(tenantBindings.get(tenantBinding.getId()) != null) {
 182                         TenantBindingType tenantBindingOld = tenantBindings.get(tenantBinding.getId());
 183                 logger.error("Ignoring duplicate binding definition for tenant id="
 184                                 + tenantBinding.getId()
 185                         + " existing name=" + tenantBindingOld.getName()
 186                         + " conflicting (ignored) name=" + tenantBinding.getName());
 187                 continue;
 188                 }
 189             tenantBindings.put(tenantBinding.getId(), tenantBinding);
 190             readDomains(tenantBinding);
 191             readServiceBindings(tenantBinding);
 192             if (logger.isInfoEnabled()) {
 193                 logger.info("Finished reading tenant bindings for tenant id=" + tenantBinding.getId()
 194                         + " name=" + tenantBinding.getName());
 195             }
 196         }
 197     }
 198
 199     /*
 200      * Take the directory of the prototype bindings and the directory of the delta bindings.  Merge the two and create (replace) a file
 201      * named "tenant-bindings.xml"
 202      *
 203         private static String merge(String original, String patch) {
 204                 InputStream result = null;
 205                 try {
 206                         Configurer configurer = new AttributeMergeConfigurer();
 207
 208
 209                         FileInputStream ins1 = new FileInputStream(".\\src\\main\\resources\\File1.xml");
 210                         FileInputStream ins2 = new FileInputStream(".\\src\\main\\resources\\File2.xml");
 211                         InputStream[] inputStreamArray = {ins1, ins2};
 212
 213                         result = new ConfigurableXmlMerge(configurer).merge(inputStreamArray);
 214 //                      result = new ConfigurableXmlMerge(configurer).merge(new String[] {original, patch});
 215                 } catch (Exception e) {
 216                         // TODO Auto-generated catch block
 217                         e.printStackTrace();
 218                 }
 219                 File mergedOutFile = new File(".\\target\\merged.xml");
 220                 try {
 221                         FileUtils.copyInputStreamToFile(result, mergedOutFile);
 222                 } catch (IOException e) {
 223                         // TODO Auto-generated catch block
 224                         e.printStackTrace();
 225                 }
 226
 227                 return null;
 228         }
 229         */
 230
 231         /**
 232      * Merge and read the prototype bindsings with each tenant specific bindings delta to create the final
 233      * tenant bindings.
 234      *
 235      * @param protoBindingsFile - The prototypical bindings file.
 236      * @param tenantDirList - The list of tenant directories containing tenant specific bindings
 237      * @return A list of tenant bindings.
 238      * @throws IOException Signals that an I/O exception has occurred.
 239      */
 240     List<TenantBindingType> readTenantConfigs(File protoBindingsFile, List<File> tenantDirList) throws IOException {
 241                 List<TenantBindingType> result = new ArrayList<TenantBindingType>();
 242                 //
 243                 // Iterate through a list of directories.
 244                 //
 245                 for (File tenantDir : tenantDirList) {
 246                         boolean found = false;
 247                         String errMessage = null;
 248                         File configFile = new File(tenantDir.getAbsoluteFile() + File.separator + getFileName());
 249                         if (configFile.exists() == true) {
 250                         InputStream tenantBindingsStream = this.merge(protoBindingsFile, configFile);
 251                         TenantBindingConfig tenantBindingConfig = null;
 252                         try {
 253                                         tenantBindingConfig = (TenantBindingConfig) parse(tenantBindingsStream,
 254                                                         TenantBindingConfig.class);
 255                         } catch (Exception e) {
 256                                 logger.error("Could not parse the merged tenant bindings.", e);
 257                         }
 258                                 if (tenantBindingConfig != null) {
 259                                         TenantBindingType binding = tenantBindingConfig.getTenantBinding();
 260                                         if (binding != null) {
 261                                                 result.add(binding);
 262                                                 found = true;
 263                                                 if (logger.isInfoEnabled() == true) {
 264                                                         logger.info("Parsed tenant configureation for: " + binding.getDisplayName());
 265                                                 }
 266                                         } else {
 267                                                 errMessage = "Cound not parse the tentant bindings in: ";
 268                                         }
 269                                 } else {
 270                                         errMessage = "Could not parse the tenant bindings file: ";
 271                                 }
 272                         } else {
 273                                 errMessage = "Cound not find a tenant configuration file: ";
 274                         }
 275                         if (found == false) {
 276                                 if (logger.isErrorEnabled() == true) {
 277                                         errMessage = errMessage != null ? errMessage : TENANT_BINDINGS_ERROR;
 278                                         logger.error(errMessage + configFile.getAbsolutePath());
 279                                 }
 280                         }
 281                 } // else-for
 282
 283                 return result;
 284         }
 285
 286     private void readDomains(TenantBindingType tenantBinding) throws Exception {
 287         for (RepositoryDomainType domain : tenantBinding.getRepositoryDomain()) {
 288                 String key = getTenantQualifiedIdentifier(tenantBinding.getId(),
 289                                 domain.getName());
 290             domains.put(key, domain);
 291         }
 292     }
 293
 294     private void readServiceBindings(TenantBindingType tenantBinding) throws Exception {
 295         for (ServiceBindingType serviceBinding : tenantBinding.getServiceBindings()) {
 296             String key = getTenantQualifiedServiceName(tenantBinding.getId(),
 297                     serviceBinding.getName());
 298             serviceBindings.put(key, serviceBinding);
 299
 300             if (serviceBinding!=null){
 301                 ServiceObjectType objectType = serviceBinding.getObject();
 302                 if (objectType!=null){
 303                     String docType = objectType.getName();
 304                     String docTypeKey = getTenantQualifiedIdentifier(tenantBinding.getId(), docType);
 305                     docTypes.put(docTypeKey, serviceBinding);
 306                 }
 307             }
 308             if (logger.isTraceEnabled()) {
 309                 logger.trace("readServiceBindings() added service "
 310                         + " name=" + key
 311                         + " workspace=" + serviceBinding.getName());
 312             }
 313         }
 314     }
 315
 316     @Override
 317     public List<TenantBindingType> getConfiguration() {
 318         return tenantBindingTypeList;
 319     }
 320
 321     /**
 322      * getTenantBindings returns all the tenant bindings read from configuration
 323      * @return
 324      */
 325     public Hashtable<String, TenantBindingType> getTenantBindings() {
 326         return tenantBindings;
 327     }
 328
 329     /**
 330      * getTenantBinding gets tenant binding for given tenant
 331      * @param tenantId
 332      * @return
 333      */
 334     public TenantBindingType getTenantBinding(
 335             String tenantId) {
 336         return tenantBindings.get(tenantId);
 337     }
 338
 339     /**
 340      * getRepositoryDomain gets repository domain configuration for the given name
 341      * @param domainName
 342      * @return
 343      */
 344     public RepositoryDomainType getRepositoryDomain(String domainName) {
 345         return domains.get(domainName.trim());
 346     }
 347
 348     /**
 349      * getRepositoryDomain gets repository domain configuration for the given service
 350      * and given tenant id
 351      * @param tenantId
 352      * @param serviceName
 353      * @return
 354      */
 355     public RepositoryDomainType getRepositoryDomain(String tenantId, String serviceName) {
 356         ServiceBindingType serviceBinding = getServiceBinding(tenantId, serviceName);
 357         if (serviceBinding == null) {
 358             throw new IllegalArgumentException("no service binding found for " + serviceName
 359                     + " of tenant with id=" + tenantId);
 360         }
 361         String repoDomain = serviceBinding.getRepositoryDomain();
 362         if (repoDomain == null) {
 363             if (logger.isTraceEnabled()) {
 364                 logger.trace("No repository domain configured for " + serviceName
 365                         + " of tenant with id=" + tenantId);
 366             }
 367             return null;
 368         }
 369         String key = this.getTenantQualifiedIdentifier(tenantId, repoDomain.trim());
 370         return domains.get(key);
 371     }
 372
 373     /**
 374      * getServiceBinding gets service binding for given tenant for a given service
 375      * @param tenantId
 376      * @param serviceName
 377      * @return
 378      */
 379     public ServiceBindingType getServiceBinding(
 380             String tenantId, String serviceName) {
 381         String key = getTenantQualifiedServiceName(tenantId, serviceName);
 382         return serviceBindings.get(key);
 383     }
 384
 385     /**
 386      * getServiceBinding gets service binding for given tenant for a given service
 387      * @param tenantId
 388      * @param docType
 389      * @return
 390      */
 391     public ServiceBindingType getServiceBindingForDocType (String tenantId, String docType) {
 392         String key = getTenantQualifiedIdentifier(tenantId, docType);
 393         return docTypes.get(key);
 394     }
 395
 396     /**
 397      * getServiceBinding gets service binding for given tenant for a given service
 398      * @param tenantId
 399      * @param serviceName
 400      * @return
 401      */
 402     public List<ServiceBindingType> getServiceBindingsByType(
 403             String tenantId, String serviceType) {
 404         List<String> serviceTypes = new ArrayList<String>(1);
 405         serviceTypes.add(serviceType);
 406         return getServiceBindingsByType(tenantId, serviceTypes);
 407     }
 408     /**
 409      * getServiceBindingsByType gets service bindings for a given tenant
 410      * for the services that fall within a supplied set of service type(s)
 411      * @param tenantId
 412      * @param serviceTypes
 413      * @return
 414      */
 415     public List<ServiceBindingType> getServiceBindingsByType(
 416             String tenantId, List<String> serviceTypes) {
 417         ArrayList<ServiceBindingType> list = null;
 418         TenantBindingType tenant = tenantBindings.get(tenantId);
 419         if (tenant != null) {
 420             for (ServiceBindingType sb : tenant.getServiceBindings()) {
 421                 if (serviceTypes.contains(sb.getType())) {
 422                     if (list == null) {
 423                         list = new ArrayList<ServiceBindingType>();
 424                     }
 425                     list.add(sb);
 426                 }
 427             }
 428         }
 429         return list;
 430     }
 431
 432     /**
 433      * @param tenantId
 434      * @param serviceName
 435      * @return the properly qualified service name
 436      */
 437     public static String getTenantQualifiedServiceName(
 438             String tenantId, String serviceName) {
 439 //        return tenantId + "." + serviceName.toLowerCase();
 440         return getTenantQualifiedIdentifier(tenantId, serviceName.toLowerCase());
 441     }
 442
 443     public static String getTenantQualifiedIdentifier(String tenantId, String identifier) {
 444         return tenantId + "." + identifier;
 445     }
 446     /**
 447      * Sets properties in the passed list on the local properties for this TenantBinding.
 448      * Note: will only set properties not already set on the TenantBinding.
 449      *
 450      * @param propList
 451      * @param propagateToServices If true, recurses to set set properties
 452      *                  on the associated services.
 453      */
 454     public void setDefaultPropertiesOnTenants(List<PropertyItemType> propList,
 455             boolean propagateToServices) {
 456         // For each tenant, set properties in list that are not already set
 457         if (propList == null || propList.isEmpty()) {
 458             return;
 459         }
 460         for (TenantBindingType tenant : tenantBindings.values()) {
 461             for (PropertyItemType prop : propList) {
 462                 TenantBindingUtils.setPropertyValue(tenant,
 463                         prop, TenantBindingUtils.SET_PROP_IF_MISSING);
 464             }
 465             if (propagateToServices) {
 466                 TenantBindingUtils.propagatePropertiesToServices(tenant,
 467                         TenantBindingUtils.SET_PROP_IF_MISSING);
 468             }
 469         }
 470     }
 471
 472     public String getResourcesDir(){
 473         return getConfigRootDir() + File.separator + RESOURCES_DIR_NAME;
 474     }
 475
 476
 477     /**
 478      * Returns a list of tenant identifiers (tenant IDs).
 479      *
 480      * @return a list of tenant IDs
 481      */
 482     public List<String> getTenantIds() {
 483         List<String> tenantIds = new ArrayList<String>();
 484         String tenantId;
 485         Hashtable<String, TenantBindingType> tenantBindings = getTenantBindings();
 486         if (tenantBindings != null && !tenantBindings.isEmpty()) {
 487             Enumeration keys = tenantBindings.keys();
 488             while (keys.hasMoreElements()) {
 489                 tenantId = (String) keys.nextElement();
 490                 if (Tools.notBlank(tenantId)) {
 491                     tenantIds.add(tenantId);
 492                 }
 493             }
 494         }
 495         return tenantIds;
 496     }
 497 }