zypp/repo/PackageProvider.h

   1 /*---------------------------------------------------------------------\
   2 |                          ____ _   __ __ ___                          |
   3 |                         |__  / \ / / . \ . \                         |
   4 |                           / / \ V /|  _/  _/                         |
   5 |                          / /__ | | | | | |                           |
   6 |                         /_____||_| |_| |_|                           |
   7 |                                                                      |
   8 \---------------------------------------------------------------------*/
   9 /** \file       zypp/repo/PackageProvider.h
  10  *
  11 */
  12 #ifndef ZYPP_REPO_PACKAGEPROVIDER_H
  13 #define ZYPP_REPO_PACKAGEPROVIDER_H
  14
  15 #include <iosfwd>
  16
  17 #include "zypp/base/NonCopyable.h"
  18
  19 #include "zypp/ZYppCallbacks.h"
  20 #include "zypp/Repository.h"
  21 #include "zypp/Package.h"
  22 #include "zypp/ManagedFile.h"
  23
  24 #include "zypp/repo/DeltaCandidates.h"
  25
  26 ///////////////////////////////////////////////////////////////////
  27 namespace zypp
  28 { /////////////////////////////////////////////////////////////////
  29   ///////////////////////////////////////////////////////////////////
  30   namespace repo
  31   { /////////////////////////////////////////////////////////////////
  32
  33     ///////////////////////////////////////////////////////////////////
  34     //
  35     //  CLASS NAME : PackageProviderPolicy
  36     //
  37     /** */
  38     class PackageProviderPolicy
  39     {
  40     public:
  41       /** Get installed Editions callback signature. */
  42       typedef function<bool ( const std::string &, const Edition &, const Arch & )> QueryInstalledCB;
  43
  44       /** Set callback. */
  45       PackageProviderPolicy & queryInstalledCB( QueryInstalledCB queryInstalledCB_r )
  46       { _queryInstalledCB = queryInstalledCB_r; return *this; }
  47
  48       /** Evaluate callback. */
  49       bool queryInstalled( const std::string & name_r,
  50                            const Edition &     ed_r,
  51                            const Arch &        arch_r ) const;
  52
  53     private:
  54       QueryInstalledCB _queryInstalledCB;
  55     };
  56     ///////////////////////////////////////////////////////////////////
  57
  58     ///////////////////////////////////////////////////////////////////
  59     //
  60     //  CLASS NAME : PackageProvider
  61     //
  62     /** Provide a package from a Source.
  63      * Use available delta/patch-rpm if apropriate.
  64     */
  65     class PackageProvider : private base::NonCopyable
  66     {
  67       typedef shared_ptr<void>                                       ScopedGuard;
  68       typedef callback::SendReport<repo::DownloadResolvableReport> Report;
  69
  70       typedef detail::ResImplTraits<Package::Impl>::constPtr PackageImpl_constPtr;
  71       typedef packagedelta::DeltaRpm                         DeltaRpm;
  72       typedef packagedelta::PatchRpm                         PatchRpm;
  73
  74
  75     public:
  76       /** Ctor taking the Package to provide. */
  77       PackageProvider( const Package::constPtr & package,
  78                        const DeltaCandidates & deltas,
  79                        const PackageProviderPolicy & policy_r = PackageProviderPolicy() );
  80       ~PackageProvider();
  81
  82     public:
  83       /** Provide the package.
  84        * \throws Exception.
  85       */
  86       ManagedFile providePackage() const;
  87
  88     private:
  89       ManagedFile doProvidePackage() const;
  90       ManagedFile tryDelta( const DeltaRpm & delta_r ) const;
  91       ManagedFile tryPatch( const PatchRpm & patch_r ) const;
  92
  93     private:
  94       ScopedGuard newReport() const;
  95       Report & report() const;
  96       bool progressDeltaDownload( int value ) const;
  97       void progressDeltaApply( int value ) const;
  98       bool progressPatchDownload( int value ) const;
  99       bool progressPackageDownload( int value ) const;
 100       bool failOnChecksumError() const;
 101       bool queryInstalled( const Edition & ed_r = Edition() ) const;
 102
 103     private:
 104       PackageProviderPolicy      _policy;
 105       Package::constPtr          _package;
 106       PackageImpl_constPtr       _implPtr;
 107       mutable bool               _retry;
 108       mutable shared_ptr<Report> _report;
 109       DeltaCandidates _deltas;
 110     };
 111     ///////////////////////////////////////////////////////////////////
 112
 113     /////////////////////////////////////////////////////////////////
 114   } // namespace repo
 115   ///////////////////////////////////////////////////////////////////
 116   /////////////////////////////////////////////////////////////////
 117 } // namespace zypp
 118 ///////////////////////////////////////////////////////////////////
 119 #endif // ZYPP_SOURCE_PACKAGEPROVIDER_H