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#ifndef CVMFS_CATALOG_DOWNLOADER_H_ |
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#define CVMFS_CATALOG_DOWNLOADER_H_ |
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#include "catalog_mgr_ro.h" |
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#include "ingestion/task.h" |
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#include "crypto/hash.h" |
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#include "util/concurrency.h" |
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extern int kCatalogDownloadMultiplier; |
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struct CatalogDownloadResult { |
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CatalogDownloadResult() { } |
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explicit CatalogDownloadResult(const std::string &p, const std::string &h) |
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: db_path(p), hash(h) { } |
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std::string db_path; |
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std::string hash; |
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}; |
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class CatalogItem : SingleCopy { |
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public: |
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explicit CatalogItem(const shash::Any &hash); |
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static CatalogItem *CreateQuitBeacon() { |
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shash::Any const empty; |
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return new CatalogItem(empty); |
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} |
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bool IsQuitBeacon() { |
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return hash_.IsNull(); |
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} |
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shash::Any *GetHash() { |
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return &hash_; |
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} |
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private: |
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shash::Any hash_; |
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}; |
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class TaskCatalogDownload |
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: public TubeConsumer<CatalogItem> |
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, public Observable<CatalogDownloadResult> { |
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public: |
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TaskCatalogDownload(catalog::SimpleCatalogManager *catalog_mgr, Tube<CatalogItem> *tube_in, Tube<CatalogItem> *tube_counter) |
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: TubeConsumer<CatalogItem>(tube_in), tube_counter_(tube_counter), catalog_mgr_(catalog_mgr) { } |
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protected: |
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virtual void Process(CatalogItem *input_hash); |
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private: |
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Tube<CatalogItem> *tube_counter_; |
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catalog::SimpleCatalogManager *catalog_mgr_; |
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}; |
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class CatalogDownloadPipeline : public Observable<CatalogDownloadResult> { |
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public: |
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explicit CatalogDownloadPipeline(catalog::SimpleCatalogManager *catalog_mgr); |
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~CatalogDownloadPipeline(); |
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void Spawn(); |
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void Process(const shash::Any &catalog_hash); |
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void WaitFor(); |
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void OnFileProcessed(const CatalogDownloadResult &catalog_download_result); |
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private: |
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bool spawned_; |
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Tube<CatalogItem> tube_input_; |
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Tube<CatalogItem> tube_counter_; |
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TubeConsumerGroup<CatalogItem> tasks_download_; |
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catalog::SimpleCatalogManager *catalog_mgr_; |
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}; |
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#endif // CVMFS_CATALOG_DOWNLOADER_H_ |
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