1 /*---------------------------------------------------------------------\
3 | |__ / \ / / . \ . \ |
8 \---------------------------------------------------------------------*/
9 /** \file zypp/Resolver.h
12 #ifndef ZYPP_RESOLVER_H
13 #define ZYPP_RESOLVER_H
18 #include "zypp/base/ReferenceCounted.h"
19 #include "zypp/base/PtrTypes.h"
21 #include "zypp/ResPool.h"
22 #include "zypp/solver/detail/Resolver.h"
23 #include "zypp/solver/detail/SolverQueueItem.h"
24 #include "zypp/ProblemTypes.h"
26 ///////////////////////////////////////////////////////////////////
28 { /////////////////////////////////////////////////////////////////
31 ///////////////////////////////////////////////////////////////////
33 // CLASS NAME : Resolver
36 * Dependency resolver interface.
38 * To resolve dependencies after making changes to the \ref ResPool (using
39 * \ref addRequire(), \ref addConflict(), \ref applySolutions(), or by making
40 * the changes directly on the \ref PoolItem status objects,
41 * call the \ref resolvePool() method.
43 class Resolver : public base::ReferenceCounted, private base::NonCopyable
48 Resolver( const ResPool & pool );
53 * Resolve package dependencies:
55 * Enter \ref systemVerification mode to monitor and repair dependencies
56 * of already installed packages, and solve immediately.
58 * Call \ref setSystemVerification to turn of this mode.
64 * Resolve package dependencies:
66 * Try to execute all pending transactions (there may be more than
68 * The solver collects all transactions (install/delete resolvables)
69 * from the pool, generates task, solving it and writes the
70 * results back to pool
72 * Returns "true" on success (i.e., if there were no problems that
73 * need user interaction) and "false" if there were problems. In
74 * the latter case, use problems() and later applySolutions()
81 * Resolve package dependencies:
83 * The solver works off the given queue and writes back the solution
86 * Returns "true" on success (i.e., if there were no problems that
87 * need user interaction) and "false" if there were problems. In
88 * the latter case, use problems() and later applySolutions()
90 * The solution could be that the solver remove/add some entries
91 * in the task queue. So make a new call of resolveQueue after you
92 * have applied any solution AND check the parameter "queue" if
93 * there has been any changes by the solver and adapt these changes
94 * to e.g. the selectables.
97 bool resolveQueue( solver::detail::SolverQueueItemList & queue );
100 * Undo solver changes done in resolvePool()
101 * Throwing away all ignored dependencies.
106 * Resets solver information and verify option.
112 * Do an distribution upgrade
114 * Perform a distribution upgrade. This performs an update of
115 * all packages with a special resolver algorithm which takes
116 * care of package splits, pattern and product updates,
119 * \see \ref addUpgradeRepo
124 * Update to newest package
126 * Install the newest version of your installed packages as
127 * far as possible. This means a newer package will NOT be
128 * installed if it generates dependency problems.
129 * So the user will not get an error message.
135 * Unmaintained packages which does not fit to
136 * the updated system (broken dependencies) will be
138 * Return the list of deleted items.
139 * Note : This list is valid after the call doUpgrade() only.
141 std::list<PoolItem> problematicUpdateItems() const;
144 * Return the dependency problems found by the last call to
145 * resolveDependencies(). If there were no problems, the returned
146 * list will be empty.
148 ResolverProblemList problems();
152 * Apply problem solutions. No more than one solution per problem
155 void applySolutions( const ProblemSolutionList & solutions );
159 * Remove resolvables which are conflicts with others or
160 * have unfulfilled requirements.
161 * This behaviour is favourited by ZMD.
163 void setForceResolve( bool force );
167 * Ignore recommended packages that were already recommended by
168 * the installed packages
170 void setIgnoreAlreadyRecommended( bool yesno_r );
171 bool ignoreAlreadyRecommended();
174 * Setting whether required packages are installed ONLY
175 * So recommended packages, language packages and packages which depend
176 * on hardware (modalias) will not be regarded.
178 void setOnlyRequires( bool yesno_r );
179 void resetOnlyRequires(); // set back to default (described in zypp.conf)
183 * Whether the \ref Resolver is in upgrade mode.
185 bool upgradeMode() const;
188 * Setting whether the solver should allow or disallow vendor changes.
190 * If OFF (the default) the solver will replace packages with packages
191 * of the same (or equivalent) vendor ony.
193 * \see \ref VendorAttr for definition of vendor equivalence.
195 void setAllowVendorChange( bool yesno_r );
196 void setDefaultAllowVendorChange(); // set back to default (in zypp.conf)
197 bool allowVendorChange() const;
200 * System verification mode also monitors and repairs dependencies
201 * of already installed packages.
202 * \see \ref verifySystem
204 void setSystemVerification( bool yesno_r );
205 void setDefaultSystemVerification();
206 bool systemVerification() const;
209 * Set whether to solve source packages build dependencies per default.
210 * Usually turned off and if, enabled per source package.
211 * \NOTE This affects only source packges selected in the \ref ResPool. No solver rule
212 * will be generated for them. Source packages requested via e.g. \ref addRequire will
214 * \NOTE Be carefull. The older the source package is, the stranger may be the
215 * result of solving it's build dependencies.
217 void setSolveSrcPackages( bool yesno_r );
218 void setDefaultSolveSrcPackages();
219 bool solveSrcPackages() const;
222 * Adding request to perform a dist upgrade restricted to this repository.
223 * This is what e.g. <tt>zypper dup --repo myrepo</tt> should perform.
224 * \see \ref doUpgrade
226 void addUpgradeRepo( Repository repo_r );
229 * Remove the upgrade request for this repo.
231 void removeUpgradeRepo( Repository repo_r );
234 * Remove all upgrade repo requests.
236 void removeUpgradeRepos();
239 * Adding additional requirement
242 void addRequire( const Capability & capability );
245 * Adding additional conflict
248 void addConflict( const Capability & capability );
251 * Remove the additional requirement set by \ref addRequire(Capability).
254 void removeRequire( const Capability & capability );
257 * Remove the additional conflict set by \ref addConflict(Capability).
260 void removeConflict( const Capability & capability );
263 * Get all the additional requirements set by \ref addRequire(Capability).
266 CapabilitySet getRequire();
269 * Get all the additional conflicts set by \ref addConflict(Capability).
272 CapabilitySet getConflict();
275 * Generates a solver Testcase of the current state
277 * \parame dumpPath destination directory of the created directory
278 * \return true if it was successful
280 bool createSolverTestcase( const std::string & dumpPath = "/var/log/YaST2/solverTestcase", bool runSolver = true );
283 * Gives information about WHO has pused an installation of an given item.
285 * \param item Evaluate additional information for this resolvable.
286 * \return A list of structures which contains:
287 * item Item which has triggered the installation of the given param item.
288 * initialInstallation This item has triggered the installation
289 * Not already fullfilled requierement only.
290 * cap Capability which has triggerd this installation
291 * capKind Kind of that capability (e.g. Dep::REQUIRES,Dep::RECOMMENDS,... )
293 * Note: In order to have a result start a solver run before. Not matter if it is valid or invalid.
296 solver::detail::ItemCapKindList isInstalledBy( const PoolItem & item );
299 * Gives information about WHICH additional items will be installed due the installation of an item.
301 * \param item Evaluate additional information for this resolvable.
302 * \return A list of structures which contains:
303 * item Item which has triggered the installation of the given param item.
304 * initialInstallation This item has triggered the installation
305 * Not already fullfilled requierement only.
306 * cap Capability which has triggerd this installation
307 * capKind Kind of that capability (e.g. Dep::REQUIRES,Dep::RECOMMENDS,... )
309 * Note: In order to have a result start a solver run before. Not matter if it is valid or invalid.
312 solver::detail::ItemCapKindList installs( const PoolItem & item );
315 * Gives information about WHICH installed items are requested by the installation of an item.
317 * \param item Evaluate additional information for this resolvable.
318 * \return A list of structures which contains:
319 * item Item which has triggered the installation of the given param item.
320 * initialInstallation This item has triggered the installation
321 * Not already fullfilled requierement only.
322 * cap Capability which has triggerd this installation
323 * capKind Kind of that capability (e.g. Dep::REQUIRES,Dep::RECOMMENDS,... )
325 * Note: In order to have a result start a solver run before. Not matter if it is valid or invalid.
328 solver::detail::ItemCapKindList satifiedByInstalled( const PoolItem & item );
332 * Gives information about WHICH items require an already installed item.
334 * \param item Evaluate additional information for this resolvable.
335 * \return A list of structures which contains:
336 * item Item which has triggered the installation of the given param item.
337 * initialInstallation This item has triggered the installation
338 * Not already fullfilled requierement only.
339 * cap Capability which has triggerd this installation
340 * capKind Kind of that capability (e.g. Dep::REQUIRES,Dep::RECOMMENDS,... )
342 * Note: In order to have a result start a solver run before. Not matter if it is valid or invalid.
345 solver::detail::ItemCapKindList installedSatisfied( const PoolItem & item );
350 solver::detail::Resolver_Ptr _pimpl;
352 ///////////////////////////////////////////////////////////////////
354 /////////////////////////////////////////////////////////////////
356 ///////////////////////////////////////////////////////////////////
357 #endif // ZYPP_RESOLVER_H