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HttpFilePlugIn.hh
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1 
5 #ifndef __HTTP_FILE_PLUG_IN_
6 #define __HTTP_FILE_PLUG_IN_
7 
8 #include "davix.hpp"
9 
10 #include "XrdCl/XrdClFile.hh"
11 #include "XrdCl/XrdClFileSystem.hh"
13 
14 #include <cstdint>
15 #include <limits>
16 #include <mutex>
17 #include <unordered_map>
18 
19 // Indicate desire to avoid http "Range: bytes=234-567" header
20 // Some HTTP(s) data source does not honor Range request, and always start from i
21 // offset 0 when encounter a Range request, for example:
22 // https://portal.nersc.gov/archive/home/projects/incite11/www/20C_Reanalysis_version_3/everymember_anal_netcdf/daily/WSPD10m/WSPD10m_1808_daily.tar
23 //
24 // 1. via Unix env via: this is global, avoid http ranger for all URLs
25 #define HTTP_FILE_PLUG_IN_AVOIDRANGE_ENV "XRDCLHTTP_AVOIDRANAGE"
26 // 2. via CGI in URl, this only affect the associated URL
27 #define HTTP_FILE_PLUG_IN_AVOIDRANGE_CGI "xrddclhttp_avoidrange"
28 
29 namespace XrdCl {
30 
31 class Log;
32 
33 class HttpFilePlugIn : public FilePlugIn {
34  public:
36  virtual ~HttpFilePlugIn() noexcept = default;
37 
38  //------------------------------------------------------------------------
40  //------------------------------------------------------------------------
41  virtual XRootDStatus Open( const std::string &url,
42  OpenFlags::Flags flags,
43  Access::Mode mode,
44  ResponseHandler *handler,
45  uint16_t timeout ) override;
46 
47  //------------------------------------------------------------------------
49  //------------------------------------------------------------------------
50  virtual XRootDStatus Close( ResponseHandler *handler,
51  uint16_t timeout ) override;
52 
53  //------------------------------------------------------------------------
55  //------------------------------------------------------------------------
56  virtual XRootDStatus Stat( bool force,
57  ResponseHandler *handler,
58  uint16_t timeout ) override;
59 
60  //------------------------------------------------------------------------
62  //------------------------------------------------------------------------
63  virtual XRootDStatus Read( uint64_t offset,
64  uint32_t size,
65  void *buffer,
66  ResponseHandler *handler,
67  uint16_t timeout ) override;
68 
69  //------------------------------------------------------------------------
71  //------------------------------------------------------------------------
72  virtual XRootDStatus Write( uint64_t offset,
73  uint32_t size,
74  const void *buffer,
75  ResponseHandler *handler,
76  uint16_t timeout ) override;
77 
78  //------------------------------------------------------------------------
80  //------------------------------------------------------------------------
81  virtual XRootDStatus Sync( ResponseHandler *handler,
82  uint16_t timeout ) override;
83 
84  //------------------------------------------------------------------------
86  //------------------------------------------------------------------------
87  virtual XRootDStatus VectorRead( const ChunkList &chunks,
88  void *buffer,
89  XrdCl::ResponseHandler *handler,
90  uint16_t timeout ) override;
91 
92  //------------------------------------------------------------------------
94  //------------------------------------------------------------------------
95  virtual bool IsOpen() const override;
96 
97  //------------------------------------------------------------------------
99  //------------------------------------------------------------------------
100  virtual bool SetProperty( const std::string &name,
101  const std::string &value ) override;
102 
103  //------------------------------------------------------------------------
105  //------------------------------------------------------------------------
106  virtual bool GetProperty( const std::string &name,
107  std::string &value ) const override;
108 
109  private:
110 
111  Davix::Context davix_context_;
112  Davix::DavPosix davix_client_;
113 
114  DAVIX_FD* davix_fd_;
115 
116  std::mutex offset_locker;
117  uint64_t curr_offset;
118 
120 
121  bool is_open_;
122 
123  std::string url_;
124 
125  std::unordered_map<std::string, std::string> properties_;
126 
128 };
129 
130 }
131 
132 #endif // __HTTP_FILE_PLUG_IN_
Definition: HttpFilePlugIn.hh:33
std::vector< ChunkInfo > ChunkList
List of chunks.
Definition: XrdClXRootDResponses.hh:784
virtual bool IsOpen() const override
virtual XRootDStatus Open(const std::string &url, OpenFlags::Flags flags, Access::Mode mode, ResponseHandler *handler, uint16_t timeout) override
virtual XRootDStatus VectorRead(const ChunkList &chunks, void *buffer, XrdCl::ResponseHandler *handler, uint16_t timeout) override
std::mutex offset_locker
Definition: HttpFilePlugIn.hh:116
virtual XRootDStatus Sync(ResponseHandler *handler, uint16_t timeout) override
virtual XRootDStatus Write(uint64_t offset, uint32_t size, const void *buffer, ResponseHandler *handler, uint16_t timeout) override
std::unordered_map< std::string, std::string > properties_
Definition: HttpFilePlugIn.hh:125
virtual XRootDStatus Read(uint64_t offset, uint32_t size, void *buffer, ResponseHandler *handler, uint16_t timeout) override
virtual bool SetProperty(const std::string &name, const std::string &value) override
An interface for file plug-ins.
Definition: XrdClPlugInInterface.hh:36
uint64_t curr_offset
Definition: HttpFilePlugIn.hh:117
virtual ~HttpFilePlugIn() noexcept=default
Log * logger_
Definition: HttpFilePlugIn.hh:127
Request status.
Definition: XrdClXRootDResponses.hh:212
Davix::DavPosix davix_client_
Definition: HttpFilePlugIn.hh:112
Handle an async response.
Definition: XrdClXRootDResponses.hh:854
Davix::Context davix_context_
Definition: HttpFilePlugIn.hh:111
Mode
Access mode.
Definition: XrdClFileSystem.hh:122
virtual bool GetProperty(const std::string &name, std::string &value) const override
DAVIX_FD * davix_fd_
Definition: HttpFilePlugIn.hh:114
virtual XRootDStatus Stat(bool force, ResponseHandler *handler, uint16_t timeout) override
Flags
Open flags, may be or&#39;d when appropriate.
Definition: XrdClFileSystem.hh:76
std::string url_
Definition: HttpFilePlugIn.hh:123
bool avoid_pread_
Definition: HttpFilePlugIn.hh:119
bool is_open_
Definition: HttpFilePlugIn.hh:121
Handle diagnostics.
Definition: XrdClLog.hh:101
virtual XRootDStatus Close(ResponseHandler *handler, uint16_t timeout) override