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/UpgradeStatistics.h"
23 #include "zypp/solver/detail/Resolver.h"
24 #include "zypp/solver/detail/ResolverContext.h"
25 #include "zypp/ProblemTypes.h"
27 ///////////////////////////////////////////////////////////////////
29 { /////////////////////////////////////////////////////////////////
33 ///////////////////////////////////////////////////////////////////
35 // CLASS NAME : Resolver
37 /** Resolver interface.
39 class Resolver : public base::ReferenceCounted, private base::NonCopyable
44 Resolver( const ResPool & pool );
49 * Resolve package dependencies:
51 * Verify consistency of system
57 * Resolve package dependencies:
59 * Verify consistency of system
60 * considerNewHardware = install packages which depends on
64 bool verifySystem (bool considerNewHardware);
67 * Establish state of 'higher level' Resolvables in Pool
69 * Must be called when dealing with non-package resolvables,
70 * like Patches, Patterns, and Products
72 * Must be called with a 'plain' pool, e.g. no additonal
75 * return true if it was successful
76 * return false if not (this will only happen if other
77 * transactions are in the pool which will lead to
80 bool establishPool (void);
83 * go through all package 'freshen' dependencies and
84 * schedule matches for installation.
86 * To be called at begin of installation and upgrade.
87 * Probably also useful after adding a new package
90 * return true if it was successful
91 * return false if not (this will only happen if other
92 * transactions are in the pool which will lead to
95 bool freshenPool (void);
98 * Resolve package dependencies:
100 * Try to execute all pending transactions (there may be more than
103 * Returns "true" on success (i.e., if there were no problems that
104 * need user interaction) and "false" if there were problems. In
105 * the latter case, use problems() and later applySolutions()
108 bool resolvePool (void);
111 * Undo solver changes done in resolvePool()
112 * Throwing away all ignored dependencies.
117 * Get the most recent resolver context
119 * It will be NULL if resolvePool() or establishPool() was never called.
120 * Depending on the return code of the last resolvePool() call,
121 * it _either_ points to a valid or an invalid solution.
123 solver::detail::ResolverContext_Ptr context (void) const;
126 * Do an distribution upgrade
128 * This will run a full upgrade on the pool, taking all upgrade
129 * dependencies (provide/obsolete for package renames, split-
130 * provides, etc.) into account and actually removing installed
131 * packages if no upgrade exists.
133 * To be run with great caution. It basically brings your
134 * system 'back to start'.
135 * Quite helpful to get back to a 'sane state'. Quite disastrous
136 * since you'll loose all non-distribution packages
138 void doUpgrade( UpgradeStatistics & opt_stats_r );
141 * Return the list of problematic update items
142 * i.e. locked ones (due to foreign vendor)
144 std::list<PoolItem_Ref> problematicUpdateItems( void ) const;
147 * Return the dependency problems found by the last call to
148 * resolveDependencies(). If there were no problems, the returned
149 * list will be empty.
151 ResolverProblemList problems();
154 * Return more solver information if an error has happened.
157 std::list<std::string> problemDescription( void ) const;
160 * Apply problem solutions. No more than one solution per problem
163 void applySolutions( const ProblemSolutionList & solutions );
165 Arch architecture() const;
166 void setArchitecture( const Arch & arch);
169 * Remove resolvables which are conflicts with others or
170 * have unfulfilled requirements.
171 * This behaviour is favourited by ZMD.
173 void setForceResolve (const bool force);
174 const bool forceResolve();
177 * transact a single ResObject
179 * Installs (install == true) or removes (install == false) all required
180 * and recommended packages(!) of \c robj
181 * (More or less a 'single step' resolver call)
183 * returns false if requirements are not all fulfillable
186 bool transactResObject( ResObject::constPtr robj, bool install = true);
189 * transact all objects of this kind
191 * Look through the pool and runs transactResObject, first for removes
193 * (More or less a 'single step' resolver call)
195 * returns false if any transactResObject() call returned false.
198 bool transactResKind( Resolvable::Kind kind );
201 * reset any transact states
203 * Look through the pool and clear transact state.
204 * It will only reset states which have an equal or
208 void transactReset( ResStatus::TransactByValue causer );
211 * Setting solver timeout
213 * Stop solving after a given timeframe (seconds)
214 * seconds = 0 : No timeout
217 void setTimeout( int seconds );
220 * Getting solver timeout in seconds
226 * Restricting solver passes
228 * Stop solving after a given amount of passes
229 * count = 0 : No restriction
232 void setMaxSolverPasses (int count);
235 * Count of max solver passes
238 int maxSolverPasses ();
241 * Generates a solver Testcase of the current state
243 * return true if it was successful
245 bool createSolverTestcase (const std::string & dumpPath = "/var/log/YaST2/solverTestcase");
250 solver::detail::Resolver_Ptr _pimpl;
252 ///////////////////////////////////////////////////////////////////
254 /////////////////////////////////////////////////////////////////
256 ///////////////////////////////////////////////////////////////////
257 #endif // ZYPP_RESOLVER_H