/// <summary>
/// Store build outputs in the cache by reading them from the file system
/// </summary>
/// <param name="builder">Builder key (first part of the key)</param>
/// <param name="fingerprint">Dependency fingerprint created when the builder was executed (second part of the key)</param>
/// <param name="outputs">Target-relative path of the build outputs to be cached</param>
/// <param name="targetRoot">File system abstraction of the root target directory</param>
public void Store(BuildKey builder, IDependencyFingerprint fingerprint, IEnumerable <TargetRelativePath> outputs, IFileSystemDirectory targetRoot)
{
MemoryCacheItem item = GetOrCreate(builder);
var map = new ConcurrentDictionary <TargetRelativePath, byte[]>();
Parallel.ForEach(outputs, outputPath =>
{
if (targetRoot.Exists(outputPath))
{
using (var stream = targetRoot.ReadBinaryFile(outputPath))
{
var buf = new byte[stream.Length];
stream.Read(buf, 0, buf.Length);
map.TryAdd(outputPath, buf);
}
}
else
{
map.TryAdd(outputPath, null);
}
});
item.Update(fingerprint, map);
}
private MemoryCacheItem GetOrCreate(BuildKey builder)
{
Contract.Ensures(Contract.Result <MemoryCacheItem>() != null);
lock (cache)
{
MemoryCacheItem item;
if (!cache.TryGetValue(builder, out item))
{
item = new MemoryCacheItem();
cache.Add(builder, item);
}
Contract.Assume(item != null);
return(item);
}
}
private MemoryCacheItem GetOrCreate(BuildKey builder)
{
Contract.Ensures(Contract.Result<MemoryCacheItem>() != null);
lock (cache)
{
MemoryCacheItem item;
if (!cache.TryGetValue(builder, out item))
{
item = new MemoryCacheItem();
cache.Add(builder, item);
}
Contract.Assume(item != null);
return item;
}
}