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// Copyright 2014 The Chromium 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 "sync/engine/commit_processor.h"
#include <utility>
#include "sync/engine/commit_contribution.h"
#include "sync/engine/commit_contributor.h"
#include "sync/protocol/sync.pb.h"
namespace syncer {
typedef std::map<ModelType, size_t> TypeToIndexMap;
CommitProcessor::CommitProcessor(CommitContributorMap* commit_contributor_map)
: commit_contributor_map_(commit_contributor_map) {}
CommitProcessor::~CommitProcessor() {}
void CommitProcessor::GatherCommitContributions(
ModelTypeSet commit_types,
size_t max_entries,
Commit::ContributionMap* contributions) {
size_t num_entries = 0;
for (ModelTypeSet::Iterator it = commit_types.First();
it.Good(); it.Inc()) {
CommitContributorMap::iterator cm_it =
commit_contributor_map_->find(it.Get());
if (cm_it == commit_contributor_map_->end()) {
NOTREACHED()
<< "Could not find requested type " << ModelTypeToString(it.Get())
<< " in contributor map.";
continue;
}
size_t spaces_remaining = max_entries - num_entries;
scoped_ptr<CommitContribution> contribution =
cm_it->second->GetContribution(spaces_remaining);
if (contribution) {
num_entries += contribution->GetNumEntries();
contributions->insert(std::make_pair(it.Get(), std::move(contribution)));
}
if (num_entries >= max_entries) {
DCHECK_EQ(num_entries, max_entries)
<< "Number of commit entries exceeeds maximum";
break;
}
}
}
} // namespace syncer
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