// Copyright 2018 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include <digest/digest.h>

#include <blobfs/blob-cache.h>
#include <blobfs/cache-node.h>

using digest::Digest;

namespace blobfs {

void CacheNode::fbl_recycle() {
    if (ShouldCache()) {
        // Migrate from the open cache to the closed cache, keeping the Vnode alive.
        //
        // If the node has already been evicted, it is destroyed.
        Cache().Downgrade(this);
    } else {
        // Destroy blobs which don't want to be cached.
        //
        // If we're deleting this node, it must not exist in either hash.
        Cache().EvictUnsafe(this, true);
        ZX_DEBUG_ASSERT(!InContainer());
        delete this;
    }
}

CacheNode::CacheNode() = default;

CacheNode::CacheNode(const Digest& digest) {
    digest.CopyTo(digest_, sizeof(digest_));
}
CacheNode::~CacheNode() = default;

} // namespace blobfs