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State is now maintained (their paths are automatically shared), unless sharedState is set in the nix-expr, when a new version with the same drv-name of the component is installed

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This commit is contained in:
Wouter den Breejen 2007-08-13 15:35:12 +00:00
parent 7424d72098
commit 4089bd5f19
9 changed files with 110 additions and 75 deletions
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129
src/nix-env/nix-env.cc
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@ -15,6 +15,7 @@
#include "store-api.hh"
#include "db.hh"
#include "util.hh"
#include "local-store.hh"
#include <cerrno>
#include <ctime>
@ -189,15 +190,10 @@ static void createUserEnv(EvalState & state, const DrvInfos & elems,
strictEvalExpr(state, i->attrs->get(toATerm("meta"))), makeNoPos()));
manifest = ATinsert(manifest, makeAttrs(as)); //All DrvInfo's are inserted here
/*ATermList ass = ATmakeList1(
makeBind(toATerm("stateIdentifier"), makeStr(i->queryStateIdentifier(state)), makeNoPos())
);*/
//Insert the new stateIdentifier into the stateIdentifiers Atermlist
stateIdentifiers = ATinsert(stateIdentifiers, makeStr(i->queryStateIdentifier(state)));
//printMsg(lvlError, format("TEST2 '%1%'") % makeAttrs(as));
inputs = ATinsert(inputs, makeStr(i->queryOutPath(state)));
/* This is only necessary when installing store paths, e.g.,
@ -210,13 +206,7 @@ static void createUserEnv(EvalState & state, const DrvInfos & elems,
references.insert(drvPath);
}
//printMsg(lvlError, format("TEST '%1%'") % atPrint(canonicaliseExpr(makeList(ATreverse(manifest)))) );
//printMsg(lvlError, format("TEST2 '%1%'") % makeList(ATreverse(manifest)) );
//printMsg(lvlError, format("TEST2 '%1%'") % makeBind(toATerm("stateIdentifiers"), makeList(ATreverse(manifest)), makeNoPos()) );
printMsg(lvlError, format("TEST '%1%'") % atPrint(canonicaliseExpr(makeList(ATreverse(stateIdentifiers)))) );
/* Extract ... */
//printMsg(lvlError, format("TEST '%1%'") % atPrint(canonicaliseExpr(makeList(ATreverse(stateIdentifiers)))) );
/* Also write a copy of the list of inputs to the store; we need
it for future modifications of the environment. */
@ -233,24 +223,15 @@ static void createUserEnv(EvalState & state, const DrvInfos & elems,
makeStr(manifestFile, singleton<PathSet>(manifestFile)), makeNoPos())
)));
//printMsg(lvlError, format("Write manifest '%1%'") % topLevel);
/* Instantiate it. */
debug(format("evaluating builder expression `%1%'") % topLevel);
DrvInfo topLevelDrv;
if (!getDerivation(state, topLevel, topLevelDrv))
abort();
printMsg(lvlError, format("TEST5 '%1%'") % topLevelDrv.queryStateIdentifier(state));
printMsg(lvlError, format("BUILD ENV DRV: '%1%'") % topLevelDrv.queryDrvPath(state) );
/* Realise the resulting store expression. */
debug(format("building user environment"));
store->buildDerivations(singleton<PathSet>(topLevelDrv.queryDrvPath(state))); //HERE IS THE DRV !!!!!!!!!!!
//switch .....
printMsg(lvlError, format("TEST6"));
store->buildDerivations(singleton<PathSet>(topLevelDrv.queryDrvPath(state)));
/* Switch the current user environment to the output path. */
debug(format("switching to new user environment"));
@ -342,10 +323,6 @@ static void queryInstSources(EvalState & state,
{
InstallSourceType type = instSource.type;
for (Strings::const_iterator i = args.begin(); i != args.end(); ++i)
printMsg(lvlError, format("queryInstSources arg '%1%'") % *i);
printMsg(lvlError, format("queryInstSources TYPE '%1%'") % (type == srcUnknown));
if (type == srcUnknown && args.size() > 0 && args.front()[0] == '/')
type = srcStorePaths;
@ -399,12 +376,8 @@ static void queryInstSources(EvalState & state,
for (Strings::const_iterator i = args.begin();
i != args.end(); ++i)
{
printMsg(lvlError, format("AAAAA333 %1%'") % *i);
assertStorePath(*i);
printMsg(lvlError, format("AAAAA444 %1%'") % *i);
DrvInfo elem;
elem.attrs = boost::shared_ptr<ATermMap>(new ATermMap(0)); /* ugh... */
string name = baseNameOf(*i);
@ -421,12 +394,7 @@ static void queryInstSources(EvalState & state,
name = string(name, 0, name.size() - drvExtension.size());
}
else
{
elem.setOutPath(*i);
//if(drv.stateOutputs.size() != 0)
// elem.setStateIdentifier(drv.stateOutputs.find("state")->second.stateIdentifier);
}
elem.name = name;
@ -510,14 +478,14 @@ static void installDerivations(Globals & globals,
path is not the one we want (e.g., `java-front' versus
`java-front-0.9pre15899'). */
//printMsg(lvlError, format("New component to install DRV: '%1%'") % i->queryDrvPath(globals.state));
//Set the state indentifier
if( store->isStateComponent(i->queryOutPath(globals.state)) )
//Set the state indentifier if it is a state-component
printMsg(lvlError, format("New component to install DRV: '%1%'") % i->queryDrvPath(globals.state));
Derivation drv = derivationFromPath(i->queryDrvPath(globals.state));
if(store->isStateDrv(drv))
{
Derivation drv = derivationFromPath(i->queryDrvPath(globals.state));
DerivationStateOutputs stateOutputs = drv.stateOutputs;
string stateIdentifier = stateOutputs.find("state")->second.stateIdentifier;
printMsg(lvlError, format("Add '%2%' with '%1%'") % stateIdentifier % i->queryOutPath(globals.state) );
if(stateIdentifier == "")
i->setStateIdentifier("__EMTPY__");
else
@ -535,19 +503,67 @@ static void installDerivations(Globals & globals,
lockProfile(lock, profile);
DrvInfos installedElems = queryInstalled(globals.state, profile);
StringPairs toBeShared; //Mapping from old --> new statePath
DrvInfos allElems(newElems);
for (DrvInfos::iterator i = installedElems.begin(); i != installedElems.end(); ++i)
{
DrvName drvName(i->name);
//TODO !!!!!!!!!!!!!!!!!!!!!!!! SHARE (OR COPY) STATE HERE IF NEEDED
//if( newNames.find(drvName.name) != newNames.end() && identifier == identifier )
//{
//}
if (!globals.preserveInstalled && newNames.find(drvName.name) != newNames.end())
printMsg(lvlInfo, format("replacing old `%1%'") % i->name);
if (!globals.preserveInstalled && newNames.find(drvName.name) != newNames.end()){
//******** We're gonna check if the component and state indentifiers are the same,
// since we may need to share state in that case.
string oldStateIdentifier = i->queryStateIdentifier(globals.state); //get the old stateIdentifier
if(oldStateIdentifier != "__NOSTATE__")
{
//get the new stateIdentifier
string newStateIdentifier;
string newStatePath;
string newSharedState;
for (DrvInfos::iterator j = newElems.begin(); j != newElems.end(); ++j) {
DrvName newDrvName(j->name);
if(newDrvName.name == drvName.name){
Derivation newDrv = derivationFromPath(j->queryDrvPath(globals.state));
DerivationStateOutputs newStateOutputs = newDrv.stateOutputs;
newStateIdentifier = newStateOutputs.find("state")->second.stateIdentifier;
newStatePath = newDrv.stateOutputs.find("state")->second.statepath;
newSharedState = newDrv.stateOutputs.find("state")->second.sharedState;
break;
}
}
//printMsg(lvlError, format("old '%1%' new '%2%'") % oldStateIdentifier % newStateIdentifier);
if( newSharedState == ""
&&
(oldStateIdentifier == newStateIdentifier
|| (oldStateIdentifier == "__EMTPY__" && newStateIdentifier == ""))
){
string oldStatePath;
//query old state path
PathSet derivers = queryDerivers(noTxn, i->queryOutPath(globals.state), newStateIdentifier, getCallingUserName());
if(derivers.size() != 1)
throw Error(format("Internal Error: There is not exactly one deriver with state_identifier '%1%' for path '%2%'")
% newStateIdentifier % i->queryOutPath(globals.state));
Path oldDrvPath = *(derivers.begin());
Derivation oldDrv = derivationFromPath(oldDrvPath);
oldStatePath = oldDrv.stateOutputs.find("state")->second.statepath;
//SharePaths
printMsg(lvlError, format("Sharing state from old to new component '%1%' --> '%2%'") % newStatePath % oldStatePath);
toBeShared[oldStatePath] = newStatePath;
}
else{ //If not equal, then we do not replace, so we push back (just like the else branch)
printMsg(lvlError, format("Installing new state-component component '%1%' with identifier '%2%'") % drvName.name % oldStateIdentifier);
allElems.push_back(*i);
}
}
else
printMsg(lvlInfo, format("replacing old `%1%'") % i->name);
}
else
allElems.push_back(*i);
}
@ -562,6 +578,18 @@ static void installDerivations(Globals & globals,
createUserEnv(globals.state, allElems,
profile, globals.keepDerivations);
//After all components have been built succesfully, share their state paths with the old ones
for (StringPairs::iterator i = toBeShared.begin(); i != toBeShared.end(); ++i){
deletePathWrapped(i->second); //Remove contents of current new state path
sharePath(i->first, i->second); //Share new statepath to the old statepath
//Set in database
setSharedStateTxn(noTxn, i->first, i->second);
}
}
@ -578,6 +606,7 @@ static void opInstall(Globals & globals,
typedef enum { utLt, utLeq, utEq, utAlways } UpgradeType;
//TODO !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
static void upgradeDerivations(Globals & globals,
const Strings & args, UpgradeType upgradeType)
{