XRootD
XrdClHttpFilePlugIn.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
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_AVOIDRANGE"
26 // 2. via CGI in URl, this only affect the associated URL
27 #define HTTP_FILE_PLUG_IN_AVOIDRANGE_CGI "xrdclhttp_avoidrange"
28 
29 namespace XrdCl {
30 
31 class Log;
32 
33 class HttpFilePlugIn : public FilePlugIn {
34  public:
36  virtual ~HttpFilePlugIn() noexcept;
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 PgRead( uint64_t offset,
73  uint32_t size,
74  void *buffer,
75  ResponseHandler *handler,
76  uint16_t timeout ) override;
77 
78  //------------------------------------------------------------------------
80  //------------------------------------------------------------------------
81  virtual XRootDStatus Write( uint64_t offset,
82  uint32_t size,
83  const void *buffer,
84  ResponseHandler *handler,
85  uint16_t timeout ) override;
86 
87  //------------------------------------------------------------------------
89  //------------------------------------------------------------------------
90  virtual XRootDStatus PgWrite( uint64_t offset,
91  uint32_t size,
92  const void *buffer,
93  std::vector<uint32_t> &cksums,
94  ResponseHandler *handler,
95  uint16_t timeout ) override;
96 
97  //------------------------------------------------------------------------
99  //------------------------------------------------------------------------
100  virtual XRootDStatus Sync( ResponseHandler *handler,
101  uint16_t timeout ) override;
102 
103  //------------------------------------------------------------------------
105  //------------------------------------------------------------------------
106  virtual XRootDStatus VectorRead( const ChunkList &chunks,
107  void *buffer,
108  XrdCl::ResponseHandler *handler,
109  uint16_t timeout ) override;
110 
111  //------------------------------------------------------------------------
113  //------------------------------------------------------------------------
114  virtual bool IsOpen() const override;
115 
116  //------------------------------------------------------------------------
118  //------------------------------------------------------------------------
119  virtual bool SetProperty( const std::string &name,
120  const std::string &value ) override;
121 
122  //------------------------------------------------------------------------
124  //------------------------------------------------------------------------
125  virtual bool GetProperty( const std::string &name,
126  std::string &value ) const override;
127 
128  private:
129 
130  Davix::Context *davix_context_;
131  Davix::DavPosix *davix_client_;
132 
133  DAVIX_FD* davix_fd_;
134 
135  std::mutex offset_locker;
136  uint64_t curr_offset;
137 
138  bool avoid_pread_;
139  bool isChannelEncrypted;
140 
141  bool is_open_;
142  uint64_t filesize;
143 
144  std::string url_;
145 
146  std::unordered_map<std::string, std::string> properties_;
147 
148  Log* logger_;
149 };
150 
151 }
152 
153 #endif // __HTTP_FILE_PLUG_IN_
An interface for file plug-ins.
virtual XRootDStatus PgRead(uint64_t offset, uint32_t size, void *buffer, ResponseHandler *handler, uint16_t timeout) override
virtual XRootDStatus PgWrite(uint64_t offset, uint32_t size, const void *buffer, std::vector< uint32_t > &cksums, ResponseHandler *handler, uint16_t timeout) override
virtual XRootDStatus Sync(ResponseHandler *handler, uint16_t timeout) override
virtual XRootDStatus Stat(bool force, ResponseHandler *handler, uint16_t timeout) override
virtual XRootDStatus Write(uint64_t offset, uint32_t size, const void *buffer, ResponseHandler *handler, uint16_t timeout) override
virtual XRootDStatus Read(uint64_t offset, uint32_t size, void *buffer, ResponseHandler *handler, uint16_t timeout) override
virtual XRootDStatus VectorRead(const ChunkList &chunks, void *buffer, XrdCl::ResponseHandler *handler, uint16_t timeout) override
virtual ~HttpFilePlugIn() noexcept
virtual XRootDStatus Open(const std::string &url, OpenFlags::Flags flags, Access::Mode mode, ResponseHandler *handler, uint16_t timeout) override
virtual bool GetProperty(const std::string &name, std::string &value) const override
virtual XRootDStatus Close(ResponseHandler *handler, uint16_t timeout) override
virtual bool SetProperty(const std::string &name, const std::string &value) override
virtual bool IsOpen() const override
Handle diagnostics.
Definition: XrdClLog.hh:101
Handle an async response.
std::vector< ChunkInfo > ChunkList
List of chunks.
XrdSysError Log
Definition: XrdConfig.cc:112
Mode
Access mode.
Flags
Open flags, may be or'd when appropriate.