Code example for LoadingCache

Methods: get

   public NodeMetadata apply(NodeMetadata arg0) {
      String[] parts = AWSUtils.parseHandle(arg0.getId());
      String region = parts[0];
      String instanceId = parts[1];
      try { 
         String publicIp = cache.get(new RegionAndName(region, instanceId));
         // Replace existing public addresses with elastic IP (see note above) 
         return NodeMetadataBuilder.fromNodeMetadata(arg0)
                 .publicAddresses(ImmutableSet.<String> builder().add(publicIp).build()).build();
      } catch (CacheLoader.InvalidCacheLoadException e) {
         // no ip was found 
         return arg0;
      } catch (ExecutionException e) {
         throw Throwables.propagate(e);
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