libzypp  17.14.0
SATResolver.h
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1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 4 -*- */
2 /* SATResolver.h
3  *
4  * Copyright (C) 2000-2002 Ximian, Inc.
5  * Copyright (C) 2005 SUSE Linux Products GmbH
6  *
7  * This program is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU General Public License,
9  * version 2, as published by the Free Software Foundation.
10  *
11  * This program is distributed in the hope that it will be useful, but
12  * WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * General Public License for more details.
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18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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20  */
21 
22 #ifndef ZYPP_SOLVER_DETAIL_SAT_RESOLVER_H
23 #define ZYPP_SOLVER_DETAIL_SAT_RESOLVER_H
24 #ifndef ZYPP_USE_RESOLVER_INTERNALS
25 #error Do not directly include this file!
26 #else
27 extern "C"
28 {
29 #include <solv/solver.h>
30 #include <solv/pool.h>
31 }
32 
33 #include <iosfwd>
34 #include <list>
35 #include <map>
36 #include <string>
37 
38 #include "zypp/base/ReferenceCounted.h"
39 #include "zypp/base/PtrTypes.h"
40 #include "zypp/ResPool.h"
41 #include "zypp/base/SerialNumber.h"
42 #include "zypp/ProblemTypes.h"
43 #include "zypp/ResolverProblem.h"
44 #include "zypp/ProblemSolution.h"
45 #include "zypp/Capability.h"
46 #include "zypp/solver/detail/SolverQueueItem.h"
47 
48 #include "zypp/sat/detail/PoolMember.h"
49 
51 namespace zypp
52 {
53 
54  namespace sat
55  {
56  class Transaction;
57  }
58 
60  namespace solver
61  {
62 
63  namespace detail
64  {
65 
66 
68 //
69 // CLASS NAME : SATResolver
75 class SATResolver : public base::ReferenceCounted, private base::NonCopyable, private sat::detail::PoolMember
76 {
77 
78  private:
79  ResPool _pool;
80  sat::detail::CPool *_satPool;
81  sat::detail::CSolver *_satSolver;
82  sat::detail::CQueue _jobQueue;
83 
84  // list of problematic items (orphaned)
85  PoolItemList _problem_items;
86 
87  // list populated by calls to addPoolItemTo*()
88  PoolItemList _items_to_install;
89  PoolItemList _items_to_remove;
90  PoolItemList _items_to_lock;
91  PoolItemList _items_to_keep;
92 
93  // solve results
94  PoolItemList _result_items_to_install;
95  PoolItemList _result_items_to_remove;
96  public:
97  bool _fixsystem:1; // repair errors in rpm dependency graph
98  bool _allowdowngrade:1; // allow to downgrade installed solvable
99  bool _allownamechange:1; // allow to change name of installed solvable
100  bool _allowarchchange:1; // allow to change architecture of installed solvables
101  bool _allowvendorchange:1; // allow to change vendor of installed solvables
102  bool _allowuninstall:1; // allow removal of installed solvables
103  bool _updatesystem:1; // update
104  bool _noupdateprovide:1; // true: update packages needs not to provide old package
105  bool _dosplitprovides:1; // true: consider legacy split provides
106  bool _onlyRequires:1; // true: consider required packages only (but recommended namespaces)
107  bool _ignorealreadyrecommended:1; // true: ignore recommended packages that were already recommended by the installed packages
108  bool _distupgrade:1;
109  bool _distupgrade_removeunsupported:1;
110  bool _dup_allowdowngrade:1; // dup mode: allow to downgrade installed solvable
111  bool _dup_allownamechange:1; // dup mode: allow to change name of installed solvable
112  bool _dup_allowarchchange:1; // dup mode: allow to change architecture of installed solvables
113  bool _dup_allowvendorchange:1; // dup mode: allow to change vendor of installed solvables
114  bool _solveSrcPackages:1; // false: generate no job rule for source packages selected in the pool
115  bool _cleandepsOnRemove:1; // whether removing a package should also remove no longer needed requirements
116 
117  private:
118  // ---------------------------------- methods
119  std::string SATprobleminfoString (Id problem, std::string &detail, Id &ignoreId);
120  std::string SATproblemRuleInfoString (Id rule, std::string &detail, Id &ignoreId);
121  std::vector<std::string> SATgetCompleteProblemInfoStrings ( Id problem );
122  void resetItemTransaction (PoolItem item);
123 
124  // Create a SAT solver and reset solver selection in the pool (Collecting
125  void solverInit(const PoolItemList & weakItems);
126  // common solver run with the _jobQueue; Save results back to pool
127  bool solving(const CapabilitySet & requires_caps = CapabilitySet(),
128  const CapabilitySet & conflict_caps = CapabilitySet());
129  // cleanup solver
130  void solverEnd();
131  // set locks for the solver
132  void setLocks();
133  // set requirements for a running system
134  void setSystemRequirements();
135 
136  // Checking if this solvable/item has a buddy which reflect the real
137  // user visible description of an item
138  // e.g. The release package has a buddy to the concerning product item.
139  // This user want's the message "Product foo conflicts with product bar" and
140  // NOT "package release-foo conflicts with package release-bar"
141  // So these functions return the concerning buddy (e.g. product item)
142  sat::Solvable mapSolvable (const Id &id);
143  PoolItem mapItem (const PoolItem &item);
144 
145  public:
146 
147  SATResolver (const ResPool & pool, sat::detail::CPool *satPool);
148  virtual ~SATResolver();
149 
150  // ---------------------------------- I/O
151 
152  virtual std::ostream & dumpOn( std::ostream & str ) const;
153  friend std::ostream& operator<<(std::ostream& str, const SATResolver & obj)
154  { return obj.dumpOn (str); }
155 
156  ResPool pool (void) const;
157  void setPool (const ResPool & pool) { _pool = pool; }
158 
159  // solver run with pool selected items
160  bool resolvePool(const CapabilitySet & requires_caps,
161  const CapabilitySet & conflict_caps,
162  const PoolItemList & weakItems,
163  const std::set<Repository> & upgradeRepos
164  );
165  // solver run with the given request queue
166  bool resolveQueue(const SolverQueueItemList &requestQueue,
167  const PoolItemList & weakItems
168  );
169  // searching for new packages
170  void doUpdate();
171 
172  ResolverProblemList problems ();
173  void applySolutions (const ProblemSolutionList &solutions);
174 
175  bool fixsystem () const {return _fixsystem;}
176  void setFixsystem ( const bool fixsystem) { _fixsystem = fixsystem;}
177 
178  bool ignorealreadyrecommended () const {return _ignorealreadyrecommended;}
179  void setIgnorealreadyrecommended ( const bool ignorealreadyrecommended) { _ignorealreadyrecommended = ignorealreadyrecommended;}
180 
181  bool distupgrade () const {return _distupgrade;}
182  void setDistupgrade ( const bool distupgrade) { _distupgrade = distupgrade;}
183 
184  bool distupgrade_removeunsupported () const {return _distupgrade_removeunsupported;}
185  void setDistupgrade_removeunsupported ( const bool distupgrade_removeunsupported) { _distupgrade_removeunsupported = distupgrade_removeunsupported;}
186 
187  bool allowdowngrade () const {return _allowdowngrade;}
188  void setAllowdowngrade ( const bool allowdowngrade) { _allowdowngrade = allowdowngrade;}
189 
190  bool allowarchchange () const {return _allowarchchange;}
191  void setAllowarchchange ( const bool allowarchchange) { _allowarchchange = allowarchchange;}
192 
193  bool allowvendorchange () const {return _allowvendorchange;}
194  void setAllowvendorchange ( const bool allowvendorchange) { _allowvendorchange = allowvendorchange;}
195 
196  bool allowuninstall () const {return _allowuninstall;}
197  void setAllowuninstall ( const bool allowuninstall) { _allowuninstall = allowuninstall;}
198 
199  bool updatesystem () const {return _updatesystem;}
200  void setUpdatesystem ( const bool updatesystem) { _updatesystem = updatesystem;}
201 
202  bool noupdateprovide () const {return _noupdateprovide;}
203  void setNoupdateprovide ( const bool noupdateprovide) { _noupdateprovide = noupdateprovide;}
204 
205  bool dosplitprovides () const {return _dosplitprovides;}
206  void setDosplitprovides ( const bool dosplitprovides) { _dosplitprovides = dosplitprovides;}
207 
208  bool onlyRequires () const {return _onlyRequires;}
209  void setOnlyRequires ( const bool onlyRequires) { _onlyRequires = onlyRequires;}
210 
211  bool solveSrcPackages() const { return _solveSrcPackages; }
212  void setSolveSrcPackages( bool state_r ) { _solveSrcPackages = state_r; }
213 
214  bool cleandepsOnRemove() const { return _cleandepsOnRemove; }
215  void setCleandepsOnRemove( bool state_r ) { _cleandepsOnRemove = state_r; }
216 
217  PoolItemList problematicUpdateItems( void ) const { return _problem_items; }
218  PoolItemList problematicUpdateItems() { return _problem_items; }
219 
220  PoolItemList resultItemsToInstall () { return _result_items_to_install; }
221  PoolItemList resultItemsToRemove () { return _result_items_to_remove; }
222 
223  sat::StringQueue autoInstalled() const;
224  sat::StringQueue userInstalled() const;
225 };
226 
228  };// namespace detail
231  };// namespace solver
234 };// namespace zypp
236 #endif // ZYPP_USE_RESOLVER_INTERNALS
237 #endif // ZYPP_SOLVER_DETAIL_SAT_RESOLVER_H