Пример #1
0
 @Nullable
 public static ExternalPackage getExternalPackage(Environment env)
     throws RepositoryFunctionException {
   SkyKey packageKey = PackageValue.key(ExternalPackage.PACKAGE_IDENTIFIER);
   PackageValue packageValue;
   try {
     packageValue = (PackageValue) env.getValueOrThrow(packageKey, NoSuchPackageException.class);
   } catch (NoSuchPackageException e) {
     throw new RepositoryFunctionException(
         new BuildFileNotFoundException(
             ExternalPackage.PACKAGE_IDENTIFIER, "Could not load //external package"),
         Transience.PERSISTENT);
   }
   if (packageValue == null) {
     return null;
   }
   ExternalPackage externalPackage = (ExternalPackage) packageValue.getPackage();
   if (externalPackage.containsErrors()) {
     throw new RepositoryFunctionException(
         new BuildFileContainsErrorsException(
             ExternalPackage.PACKAGE_IDENTIFIER, "Could not load //external package"),
         Transience.PERSISTENT);
   }
   return externalPackage;
 }
Пример #2
0
 /**
  * Uses a remote repository name to fetch the corresponding Rule describing how to get it. This
  * should be called from {@link SkyFunction#compute} functions, which should return null if this
  * returns null. If {@code ruleClassName} is set, the rule found must have a matching rule class
  * name.
  */
 @Nullable
 public static Rule getRule(
     RepositoryName repositoryName, @Nullable String ruleClassName, Environment env)
     throws RepositoryFunctionException {
   ExternalPackage externalPackage = getExternalPackage(env);
   if (externalPackage == null) {
     return null;
   }
   Rule rule = externalPackage.getRepositoryInfo(repositoryName);
   if (rule == null) {
     throw new RepositoryFunctionException(
         new BuildFileContainsErrorsException(
             ExternalPackage.PACKAGE_IDENTIFIER,
             "The repository named '" + repositoryName + "' could not be resolved"),
         Transience.PERSISTENT);
   }
   Preconditions.checkState(
       ruleClassName == null || rule.getRuleClass().equals(ruleClassName),
       "Got %s, was expecting a %s",
       rule,
       ruleClassName);
   return rule;
 }