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/** |
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* This file is part of the CernVM File System. |
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*/ |
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#ifndef CVMFS_SESSION_CONTEXT_H_ |
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#define CVMFS_SESSION_CONTEXT_H_ |
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#include <pthread.h> |
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#include <string> |
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#include <vector> |
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#include "pack.h" |
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#include "repository_tag.h" |
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#include "util/concurrency.h" |
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#include "util/future.h" |
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#include "util/pointer.h" |
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#include "util/tube.h" |
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namespace upload { |
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struct CurlSendPayload { |
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const std::string* json_message; |
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ObjectPackProducer* pack_serializer; |
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size_t index; |
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}; |
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size_t SendCB(void* ptr, size_t size, size_t nmemb, void* userp); |
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size_t RecvCB(void* buffer, size_t size, size_t nmemb, void* userp); |
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/** |
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* This class implements a context for a single publish operation |
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* |
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* The context is created at the start of a publish operation and |
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* is supposed to live at least until the payload has been submitted |
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* to the repo services. |
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* |
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* It is the GatewayUploader concrete class which handles the creation and |
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* destruction of the SessionContext. A session should begin when the spooler |
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* and uploaders are initialized and should last until the call to |
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* Spooler::WaitForUpload(). |
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*/ |
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class SessionContextBase { |
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public: |
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SessionContextBase(); |
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virtual ~SessionContextBase(); |
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// By default, the maximum number of queued jobs is limited to 10, |
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// representing 10 * 200 MB = 2GB max memory used by the queue |
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bool Initialize(const std::string& api_url, const std::string& session_token, |
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const std::string& key_id, const std::string& secret, |
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uint64_t max_pack_size = ObjectPack::kDefaultLimit, |
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uint64_t max_queue_size = 10); |
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bool Finalize(bool commit, const std::string& old_root_hash, |
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const std::string& new_root_hash, |
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const RepositoryTag& tag); |
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void WaitForUpload() {} |
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ObjectPack::BucketHandle NewBucket(); |
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bool CommitBucket(const ObjectPack::BucketContentType type, |
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const shash::Any& id, const ObjectPack::BucketHandle handle, |
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const std::string& name = "", |
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const bool force_dispatch = false); |
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protected: |
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virtual bool InitializeDerived(uint64_t max_queue_size) = 0; |
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virtual bool FinalizeDerived() = 0; |
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virtual bool Commit(const std::string& old_root_hash, |
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const std::string& new_root_hash, |
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const RepositoryTag& tag) = 0; |
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virtual Future<bool>* DispatchObjectPack(ObjectPack* pack) = 0; |
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Tube<Future<bool> > upload_results_; |
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std::string api_url_; |
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std::string session_token_; |
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std::string key_id_; |
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std::string secret_; |
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private: |
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void Dispatch(); |
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uint64_t max_pack_size_; |
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std::vector<ObjectPack::BucketHandle> active_handles_; |
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ObjectPack* current_pack_; |
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pthread_mutex_t current_pack_mtx_; |
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uint64_t bytes_committed_; |
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uint64_t bytes_dispatched_; |
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bool initialized_; |
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}; |
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class SessionContext : public SessionContextBase { |
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public: |
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SessionContext(); |
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protected: |
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struct UploadJob { |
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ObjectPack* pack; |
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Future<bool>* result; |
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}; |
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virtual bool InitializeDerived(uint64_t max_queue_size); |
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virtual bool FinalizeDerived(); |
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virtual bool Commit(const std::string& old_root_hash, |
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const std::string& new_root_hash, |
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const RepositoryTag& tag); |
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virtual Future<bool>* DispatchObjectPack(ObjectPack* pack); |
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virtual bool DoUpload(const UploadJob* job); |
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private: |
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static void* UploadLoop(void* data); |
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UniquePtr<Tube<UploadJob> > upload_jobs_; |
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pthread_t worker_; |
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static UploadJob terminator_; |
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}; |
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} // namespace upload |
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#endif // CVMFS_SESSION_CONTEXT_H_ |
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