public static void MergeImageArtifactDetails(ImageArtifactDetails src, ImageArtifactDetails target, ImageInfoMergeOptions options = null)
{
if (options == null)
{
options = new ImageInfoMergeOptions();
}
MergeData(src, target, options);
}
private static void MergeData(object srcObj, object targetObj, ImageInfoMergeOptions options)
{
if (srcObj.GetType() != targetObj.GetType())
{
throw new ArgumentException("Object types don't match.", nameof(targetObj));
}
foreach (PropertyInfo property in srcObj.GetType().GetProperties())
{
if (property.PropertyType == typeof(string))
{
property.SetValue(targetObj, property.GetValue(srcObj));
}
else if (typeof(IDictionary).IsAssignableFrom(property.PropertyType))
{
MergeDictionaries(property, srcObj, targetObj, options);
}
else if (typeof(IList <string>).IsAssignableFrom(property.PropertyType))
{
if (srcObj is ImageData &&
property.Name == nameof(ImageData.SimpleTags) &&
options.ReplaceTags)
{
// SimpleTags can be merged or replaced depending on the scenario.
// When merging multiple image info files together into a single file, the tags should be
// merged to account for cases where tags for a given image are spread across multiple
// image info files. But when publishing an image info file it the source tags should replace
// the destination tags. Any of the image's tags contained in the target should be considered
// obsolete and should be replaced by the source. This accounts for the scenario where shared
// tags are moved from one image to another. If we had merged instead of replaced, then the
// shared tag would not have been removed from the original image in the image info in such
// a scenario.
// See:
// - https://github.com/dotnet/docker-tools/pull/269
// - https://github.com/dotnet/docker-tools/issues/289
ReplaceValue(property, srcObj, targetObj);
}
else
{
MergeLists(property, srcObj, targetObj);
}
}
else
{
throw new NotSupportedException($"Unsupported model property type: '{property.PropertyType.FullName}'");
}
}
}
private static void MergeDictionaries(PropertyInfo property, object srcObj, object targetObj,
ImageInfoMergeOptions options)
{
IDictionary srcDict = (IDictionary)property.GetValue(srcObj);
if (srcDict == null)
{
return;
}
IDictionary targetDict = (IDictionary)property.GetValue(targetObj);
if (srcDict.Cast <object>().Any())
{
if (targetDict != null)
{
foreach (dynamic kvp in srcDict)
{
if (targetDict.Contains(kvp.Key))
{
object newValue = kvp.Value;
if (newValue is string)
{
targetDict[kvp.Key] = newValue;
}
else
{
MergeData(kvp.Value, targetDict[kvp.Key], options);
}
}
else
{
targetDict[kvp.Key] = kvp.Value;
}
}
}
else
{
property.SetValue(targetObj, srcDict);
}
}
}
public static void MergeRepos(RepoData[] srcRepos, List <RepoData> targetRepos, ImageInfoMergeOptions options = null)
{
if (options == null)
{
options = new ImageInfoMergeOptions();
}
foreach (RepoData srcRepo in srcRepos)
{
RepoData targetRepo = targetRepos.FirstOrDefault(r => r.Repo == srcRepo.Repo);
if (targetRepo == null)
{
targetRepos.Add(srcRepo);
}
else
{
MergeData(srcRepo, targetRepo, options);
}
}
}
private static void MergeData(object srcObj, object targetObj, ImageInfoMergeOptions options)
{
if (!((srcObj is null && targetObj is null) || (!(srcObj is null) && !(targetObj is null))))
{
throw new InvalidOperationException("The src and target objects must either be both null or both non-null.");
}
if (srcObj is null)
{
return;
}
if (srcObj.GetType() != targetObj.GetType())
{
throw new ArgumentException("Object types don't match.", nameof(targetObj));
}
IEnumerable <PropertyInfo> properties = srcObj.GetType().GetProperties()
.Where(property => property.GetCustomAttribute <JsonIgnoreAttribute>() == null);
foreach (PropertyInfo property in properties)
{
if (property.PropertyType == typeof(string) || property.PropertyType == typeof(DateTime))
{
property.SetValue(targetObj, property.GetValue(srcObj));
}
else if (typeof(IDictionary).IsAssignableFrom(property.PropertyType))
{
MergeDictionaries(property, srcObj, targetObj, options);
}
else if (typeof(IList <string>).IsAssignableFrom(property.PropertyType))
{
if (options.ReplaceTags &&
((srcObj is PlatformData && property.Name == nameof(PlatformData.SimpleTags)) ||
(srcObj is ManifestData && property.Name == nameof(ManifestData.SharedTags))))
{
// Tags can be merged or replaced depending on the scenario.
// When merging multiple image info files together into a single file, the tags should be
// merged to account for cases where tags for a given image are spread across multiple
// image info files. But when publishing an image info file the source tags should replace
// the destination tags. Any of the image's tags contained in the target should be considered
// obsolete and should be replaced by the source. This accounts for the scenario where shared
// tags are moved from one image to another. If we had merged instead of replaced, then the
// shared tag would not have been removed from the original image in the image info in such
// a scenario.
// See:
// - https://github.com/dotnet/docker-tools/pull/269
// - https://github.com/dotnet/docker-tools/issues/289
ReplaceValue(property, srcObj, targetObj);
}
else
{
MergeStringLists(property, srcObj, targetObj);
}
}
else if (typeof(IList <ImageData>).IsAssignableFrom(property.PropertyType))
{
MergeLists <ImageData>(property, srcObj, targetObj, options);
}
else if (typeof(IList <PlatformData>).IsAssignableFrom(property.PropertyType))
{
MergeLists <PlatformData>(property, srcObj, targetObj, options);
}
else if (typeof(IList <RepoData>).IsAssignableFrom(property.PropertyType))
{
MergeLists <RepoData>(property, srcObj, targetObj, options);
}
else if (typeof(ManifestData).IsAssignableFrom(property.PropertyType))
{
MergeData(property.GetValue(srcObj), property.GetValue(targetObj), options);
}
else
{
throw new NotSupportedException($"Unsupported model property type: '{property.PropertyType.FullName}'");
}
}
}
private static void MergeLists <T>(PropertyInfo property, object srcObj, object targetObj, ImageInfoMergeOptions options)
where T : IComparable <T>
{
IList <T> srcList = (IList <T>)property.GetValue(srcObj);
if (srcList == null)
{
return;
}
IList <T> targetList = (IList <T>)property.GetValue(targetObj);
if (srcList.Any())
{
if (targetList?.Any() == true)
{
foreach (T srcItem in srcList)
{
T matchingTargetItem = targetList
.FirstOrDefault(targetItem => srcItem.CompareTo(targetItem) == 0);
if (matchingTargetItem != null)
{
MergeData(srcItem, matchingTargetItem, options);
}
else
{
targetList.Add(srcItem);
}
}
}
else
{
targetList = srcList;
}
List <T> sortedList = targetList.ToList();
sortedList.Sort();
property.SetValue(targetObj, sortedList);
}
}
private static void MergePropertyData(object srcObj, object targetObj, PropertyInfo property, ImageInfoMergeOptions options)
{
object srcResult = property.GetValue(srcObj);
object targetResult = property.GetValue(targetObj);
if (srcResult is null && targetResult != null)
{
property.SetValue(targetObj, null);
}