XrdAdaptor/src/XrdSource.h

0001 #ifndef Utilities_XrdAdaptor_XrdSource_h
0002 #define Utilities_XrdAdaptor_XrdSource_h
0003
0004 #include "XrdCl/XrdClXRootDResponses.hh"
0005 #include "FWCore/Utilities/interface/get_underlying_safe.h"
0006
0007 #include <memory>
0008 #include <vector>
0009
0010 #include "QualityMetric.h"
0011
0012 namespace XrdCl {
0013   class File;
0014 }
0015
0016 namespace XrdAdaptor {
0017
0018   class RequestList;
0019   class ClientRequest;
0020   class XrdSiteStatistics;
0021   class XrdStatisticsService;
0022
0023   /**
0024    * A Source represents a connection to one storage server
0025    */
0026   class Source : public std::enable_shared_from_this<Source> {
0027   public:
0028     Source(const Source &) = delete;
0029     Source &operator=(const Source &) = delete;
0030
0031     Source(timespec now, std::unique_ptr<XrdCl::File> fileHandle, const std::string &exclude);
0032
0033     ~Source();
0034
0035     void handle(std::shared_ptr<ClientRequest>);
0036
0037     void handle(RequestList &);
0038
0039     std::shared_ptr<XrdCl::File> getFileHandle();
0040
0041     const std::string &ID() const { return m_id; }
0042     const std::string &Site() const { return m_site; }
0043     const std::string &PrettyID() const { return m_prettyid; }
0044     const std::string &ExcludeID() const { return m_exclude; }
0045
0046     unsigned getQuality() { return m_qm->get(); }
0047
0048     struct timespec getLastDowngrade() const { return m_lastDowngrade; }
0049     void setLastDowngrade(struct timespec now) { m_lastDowngrade = now; }
0050
0051     static bool getDomain(const std::string &host, std::string &domain);
0052     static bool getXrootdSite(XrdCl::File &file, std::string &site);
0053     static bool getXrootdSiteFromURL(std::string url, std::string &site);
0054
0055     // Given a file and (possibly) a host list, determine the exclude string.
0056     static void determineHostExcludeString(XrdCl::File &file, const XrdCl::HostList *hostList, std::string &exclude);
0057
0058     // Given a connected File object, determine whether we believe this to be a
0059     // dCache pool (dCache is a separate implementation and sometimes benefits from
0060     // implementation-specific behaviors.
0061     static bool isDCachePool(XrdCl::File &file, const XrdCl::HostList *hostList = nullptr);
0062     static bool isDCachePool(const std::string &url);
0063
0064     // Given an Xrootd server ID, determine the hostname to the best of our ability.
0065     static bool getHostname(const std::string &id, std::string &hostname);
0066
0067   private:
0068     void requestCallback(/* TODO: type? */);
0069
0070     void setXrootdSite();
0071
0072     std::shared_ptr<XrdCl::File const> fh() const { return get_underlying_safe(m_fh); }
0073     std::shared_ptr<XrdCl::File> &fh() { return get_underlying_safe(m_fh); }
0074     std::shared_ptr<XrdSiteStatistics const> stats() const { return get_underlying_safe(m_stats); }
0075     std::shared_ptr<XrdSiteStatistics> &stats() { return get_underlying_safe(m_stats); }
0076
0077     struct timespec m_lastDowngrade;
0078     std::string m_id;
0079     std::string m_prettyid;
0080     std::string m_site;
0081     std::string m_exclude;
0082     edm::propagate_const<std::shared_ptr<XrdCl::File>> m_fh;
0083
0084     edm::propagate_const<std::unique_ptr<QualityMetricSource>> m_qm;
0085     edm::propagate_const<std::shared_ptr<XrdSiteStatistics>> m_stats;
0086
0087 #ifdef XRD_FAKE_SLOW
0088     bool m_slow;
0089 #endif
0090   };
0091
0092 }  // namespace XrdAdaptor
0093
0094 #endif