forked from lix-project/lix
3c92ea399d
again. (After the previous substituter mechanism refactoring I didn't update the code that obtains the references of substitutable paths.) This required some refactoring: the substituter programs are now kept running and receive/respond to info requests via stdin/stdout.
96 lines
2.8 KiB
C++
96 lines
2.8 KiB
C++
#include "misc.hh"
|
|
#include "store-api.hh"
|
|
#include "local-store.hh"
|
|
|
|
#include <aterm2.h>
|
|
|
|
|
|
namespace nix {
|
|
|
|
|
|
Derivation derivationFromPath(const Path & drvPath)
|
|
{
|
|
assertStorePath(drvPath);
|
|
store->ensurePath(drvPath);
|
|
ATerm t = ATreadFromNamedFile(drvPath.c_str());
|
|
if (!t) throw Error(format("cannot read aterm from `%1%'") % drvPath);
|
|
return parseDerivation(t);
|
|
}
|
|
|
|
|
|
void computeFSClosure(const Path & storePath,
|
|
PathSet & paths, bool flipDirection)
|
|
{
|
|
if (paths.find(storePath) != paths.end()) return;
|
|
paths.insert(storePath);
|
|
|
|
PathSet references;
|
|
if (flipDirection)
|
|
store->queryReferrers(storePath, references);
|
|
else
|
|
store->queryReferences(storePath, references);
|
|
|
|
for (PathSet::iterator i = references.begin();
|
|
i != references.end(); ++i)
|
|
computeFSClosure(*i, paths, flipDirection);
|
|
}
|
|
|
|
|
|
Path findOutput(const Derivation & drv, string id)
|
|
{
|
|
for (DerivationOutputs::const_iterator i = drv.outputs.begin();
|
|
i != drv.outputs.end(); ++i)
|
|
if (i->first == id) return i->second.path;
|
|
throw Error(format("derivation has no output `%1%'") % id);
|
|
}
|
|
|
|
|
|
void queryMissing(const PathSet & targets,
|
|
PathSet & willBuild, PathSet & willSubstitute)
|
|
{
|
|
PathSet todo(targets.begin(), targets.end()), done;
|
|
|
|
while (!todo.empty()) {
|
|
Path p = *(todo.begin());
|
|
todo.erase(p);
|
|
if (done.find(p) != done.end()) continue;
|
|
done.insert(p);
|
|
|
|
if (isDerivation(p)) {
|
|
if (!store->isValidPath(p)) continue;
|
|
Derivation drv = derivationFromPath(p);
|
|
|
|
bool mustBuild = false;
|
|
for (DerivationOutputs::iterator i = drv.outputs.begin();
|
|
i != drv.outputs.end(); ++i)
|
|
if (!store->isValidPath(i->second.path) && !store->hasSubstitutes(i->second.path))
|
|
mustBuild = true;
|
|
|
|
if (mustBuild) {
|
|
willBuild.insert(p);
|
|
todo.insert(drv.inputSrcs.begin(), drv.inputSrcs.end());
|
|
for (DerivationInputs::iterator i = drv.inputDrvs.begin();
|
|
i != drv.inputDrvs.end(); ++i)
|
|
todo.insert(i->first);
|
|
} else
|
|
for (DerivationOutputs::iterator i = drv.outputs.begin();
|
|
i != drv.outputs.end(); ++i)
|
|
todo.insert(i->second.path);
|
|
}
|
|
|
|
else {
|
|
if (store->isValidPath(p)) continue;
|
|
SubstitutablePathInfo info;
|
|
if (dynamic_cast<LocalStore *>(store.get())->querySubstitutablePathInfo(p, info)) {
|
|
willSubstitute.insert(p);
|
|
todo.insert(info.references.begin(), info.references.end());
|
|
}
|
|
/* Not substitutable and not buildable; should we flag
|
|
this? */
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
}
|