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#include "catalog_downloader.h" |
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int kCatalogDownloadMultiplier = 32; |
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CatalogItem::CatalogItem(const shash::Any &hash) : hash_(hash) {} |
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void TaskCatalogDownload::Process(CatalogItem *input) { |
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std::string const catalog_path; |
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shash::Any const catalog_hash; |
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// will PANIC if download failed |
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//catalog_mgr_->LoadCatalog(PathString("") /* not used */, *input->GetHash(), &catalog_path, &catalog_hash, NULL); |
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catalog::CatalogContext context(*input->GetHash(), PathString(catalog_path)); |
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catalog_mgr_->LoadCatalogByHash(&context); |
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NotifyListeners(CatalogDownloadResult(catalog_path, input->GetHash()->ToString())); |
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tube_counter_->PopFront(); // pop after calling callback as callback could enqueue additional items |
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} |
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CatalogDownloadPipeline::CatalogDownloadPipeline( |
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catalog::SimpleCatalogManager *catalog_mgr) |
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: spawned_(false) |
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, catalog_mgr_(catalog_mgr) |
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{ |
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const unsigned int nfork_base = 1; |
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// spawn a bit more workers as this is just download task |
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for (unsigned i = 0; i < nfork_base * kCatalogDownloadMultiplier; ++i) { |
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TaskCatalogDownload *task = |
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new TaskCatalogDownload(catalog_mgr_, &tube_input_, &tube_counter_); |
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task->RegisterListener(&CatalogDownloadPipeline::OnFileProcessed, this); |
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tasks_download_.TakeConsumer(task); |
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} |
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} |
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CatalogDownloadPipeline::~CatalogDownloadPipeline() { |
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if (spawned_) { |
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tasks_download_.Terminate(); |
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} |
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} |
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void CatalogDownloadPipeline::OnFileProcessed( |
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const CatalogDownloadResult &catalog_download_result) |
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{ |
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NotifyListeners(catalog_download_result); |
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} |
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void CatalogDownloadPipeline::Process( |
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const shash::Any &catalog_hash) |
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{ |
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CatalogItem *catalog_item = new CatalogItem(catalog_hash); |
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tube_counter_.EnqueueBack(catalog_item); |
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tube_input_.EnqueueBack(catalog_item); |
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} |
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void CatalogDownloadPipeline::Spawn() { |
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tasks_download_.Spawn(); |
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spawned_ = true; |
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} |
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void CatalogDownloadPipeline::WaitFor() { |
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tube_counter_.Wait(); |
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} |
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