fixed default template for ec2 to use osVersion to match default image. improved error messages in templateBuilder

aws/core/src/main/java/org/jclouds/aws/ec2/compute/config/EC2ComputeServiceContextModule.java

@@ -170,7 +170,7 @@ public class EC2ComputeServiceContextModule extends BaseComputeServiceContextMod
    protected TemplateBuilder provideTemplate(Injector injector, TemplateBuilder template) {
       String region = injector.getInstance(Key.get(String.class, Region.class));
       return "Eucalyptus".equals(region) ? template.osFamily(CENTOS).smallest() : template.os64Bit(false).osFamily(
-               UBUNTU).imageNameMatches(".*10\\.?04.*").osDescriptionMatches("^ubuntu-images.*");
+               UBUNTU).osVersionMatches(".*10\\.?04.*").osDescriptionMatches("^ubuntu-images.*");
    }
 
    @Provides

compute/src/main/java/org/jclouds/compute/domain/internal/TemplateBuilderImpl.java

@@ -139,6 +139,11 @@ public class TemplateBuilderImpl implements TemplateBuilder {
                      && location.getParent().equals(input.getLocation());
          return returnVal;
       }
+
+      @Override
+      public String toString() {
+         return "location(" + location + ")";
+      }
    };
 
    private final Predicate<Image> idPredicate = new Predicate<Image>() {
@@ -154,6 +159,11 @@ public class TemplateBuilderImpl implements TemplateBuilder {
          }
          return returnVal;
       }
+
+      @Override
+      public String toString() {
+         return "imageId(" + imageId + ")";
+      }
    };
 
    private final Predicate<OperatingSystem> osFamilyPredicate = new Predicate<OperatingSystem>() {
@@ -180,6 +190,11 @@ public class TemplateBuilderImpl implements TemplateBuilder {
          }
          return returnVal;
       }
+
+      @Override
+      public String toString() {
+         return "osName(" + osName + ")";
+      }
    };
 
    private final Predicate<OperatingSystem> osDescriptionPredicate = new Predicate<OperatingSystem>() {
@@ -195,6 +210,11 @@ public class TemplateBuilderImpl implements TemplateBuilder {
          }
          return returnVal;
       }
+
+      @Override
+      public String toString() {
+         return "osDescription(" + osDescription + ")";
+      }
    };
 
    private final Predicate<OperatingSystem> osVersionPredicate = new Predicate<OperatingSystem>() {
@@ -209,6 +229,11 @@ public class TemplateBuilderImpl implements TemplateBuilder {
          }
          return returnVal;
       }
+
+      @Override
+      public String toString() {
+         return "osVersion(" + osVersion + ")";
+      }
    };
 
    private final Predicate<OperatingSystem> os64BitPredicate = new Predicate<OperatingSystem>() {
@@ -223,6 +248,11 @@ public class TemplateBuilderImpl implements TemplateBuilder {
          }
          return returnVal;
       }
+
+      @Override
+      public String toString() {
+         return "os64Bit(" + os64Bit + ")";
+      }
    };
 
    private final Predicate<OperatingSystem> osArchPredicate = new Predicate<OperatingSystem>() {
@@ -237,6 +267,11 @@ public class TemplateBuilderImpl implements TemplateBuilder {
          }
          return returnVal;
       }
+
+      @Override
+      public String toString() {
+         return "osArch(" + osArch + ")";
+      }
    };
 
    private final Predicate<Image> imageVersionPredicate = new Predicate<Image>() {
@@ -251,6 +286,11 @@ public class TemplateBuilderImpl implements TemplateBuilder {
          }
          return returnVal;
       }
+
+      @Override
+      public String toString() {
+         return "imageVersion(" + imageVersion + ")";
+      }
    };
 
    private final Predicate<Image> imageNamePredicate = new Predicate<Image>() {
@@ -265,6 +305,11 @@ public class TemplateBuilderImpl implements TemplateBuilder {
          }
          return returnVal;
       }
+
+      @Override
+      public String toString() {
+         return "imageName(" + imageName + ")";
+      }
    };
    private final Predicate<Image> imageDescriptionPredicate = new Predicate<Image>() {
       @Override
@@ -280,6 +325,11 @@ public class TemplateBuilderImpl implements TemplateBuilder {
          }
          return returnVal;
       }
+
+      @Override
+      public String toString() {
+         return "imageDescription(" + imageDescription + ")";
+      }
    };
    private final Predicate<Size> sizeIdPredicate = new Predicate<Size>() {
       @Override
@@ -294,6 +344,11 @@ public class TemplateBuilderImpl implements TemplateBuilder {
          }
          return returnVal;
       }
+
+      @Override
+      public String toString() {
+         return "sizeId(" + sizeId + ")";
+      }
    };
 
    private final Predicate<Size> sizeCoresPredicate = new Predicate<Size>() {
@@ -301,6 +356,11 @@ public class TemplateBuilderImpl implements TemplateBuilder {
       public boolean apply(Size input) {
          return input.getCores() >= TemplateBuilderImpl.this.minCores;
       }
+
+      @Override
+      public String toString() {
+         return "minCores(" + minCores + ")";
+      }
    };
 
    private final Predicate<Size> sizeRamPredicate = new Predicate<Size>() {
@@ -308,6 +368,11 @@ public class TemplateBuilderImpl implements TemplateBuilder {
       public boolean apply(Size input) {
          return input.getRam() >= TemplateBuilderImpl.this.minRam;
       }
+
+      @Override
+      public String toString() {
+         return "minRam(" + minRam + ")";
+      }
    };
    private final Predicate<Size> sizePredicate = and(sizeIdPredicate, locationPredicate, sizeCoresPredicate,
             sizeRamPredicate);
@@ -426,6 +491,11 @@ public class TemplateBuilderImpl implements TemplateBuilder {
             return input.getId().equals(locationId);
          }
 
+         @Override
+         public String toString() {
+            return "locationId(" + locationId + ")";
+         }
+
       });
       return this;
    }
@@ -456,7 +526,11 @@ public class TemplateBuilderImpl implements TemplateBuilder {
          options = optionsProvider.get();
       logger.debug(">> searching params(%s)", this);
       Set<? extends Image> images = getImages();
+      Predicate<Image> imagePredicate = buildImagePredicate();
       Iterable<? extends Image> supportedImages = filter(images, buildImagePredicate());
+      if (Iterables.size(supportedImages) == 0)
+         throw new NoSuchElementException(String.format(
+                  "no image matched predicate %s images that didn't match below:\n%s", imagePredicate, images));
       Size size = resolveSize(sizeSorter(), supportedImages);
       Image image = resolveImage(size, supportedImages);
       logger.debug("<<   matched image(%s)", image);
@@ -478,6 +552,11 @@ public class TemplateBuilderImpl implements TemplateBuilder {
                      return size.supportsImage(input);
                   }
 
+                  @Override
+                  public String toString() {
+                     return "size(" + size + ").supportsImage()";
+                  }
+
                });
 
             }
@@ -515,6 +594,10 @@ public class TemplateBuilderImpl implements TemplateBuilder {
             return size.supportsImage(arg0);
          }
 
+         @Override
+         public String toString() {
+            return "size(" + size + ").supportsImage()";
+         }
       };
       try {
          Iterable<? extends Image> matchingImages = filter(supportedImages, imagePredicate);
@@ -546,6 +629,10 @@ public class TemplateBuilderImpl implements TemplateBuilder {
                   return locationPredicate.apply(input);
                }
 
+               @Override
+               public String toString() {
+                  return locationPredicate.toString();
+               }
             });
 
          final List<Predicate<OperatingSystem>> osPredicates = newArrayList();
@@ -568,6 +655,11 @@ public class TemplateBuilderImpl implements TemplateBuilder {
                return Predicates.and(osPredicates).apply(input.getOperatingSystem());
             }
 
+            @Override
+            public String toString() {
+               return Predicates.and(osPredicates).toString();
+            }
+
          });
          if (imageVersion != null)
             predicates.add(imageVersionPredicate);