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* For debugging: `nix --verify' to check the consistency of the

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database and store.
This commit is contained in:
Eelco Dolstra 2003-07-17 12:27:55 +00:00
parent 71cc3ceae5
commit b3fc38bf6a
7 changed files with 139 additions and 14 deletions
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121
src/store.cc
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@ -260,3 +260,124 @@ void deleteFromStore(const string & path)
deletePath(path);
}
void verifyStore()
{
Strings paths;
enumDB(nixDB, dbPath2Id, paths);
for (Strings::iterator i = paths.begin();
i != paths.end(); i++)
{
bool erase = true;
string path = *i;
if (!pathExists(path)) {
debug(format("path `%1%' disappeared") % path);
}
else {
string id;
if (!queryDB(nixDB, dbPath2Id, path, id)) abort();
Strings idPaths;
queryListDB(nixDB, dbId2Paths, id, idPaths);
bool found = false;
for (Strings::iterator j = idPaths.begin();
j != idPaths.end(); j++)
if (path == *j) {
found = true;
break;
}
if (found)
erase = false;
else
/* !!! perhaps we should add path to idPaths? */
debug(format("reverse mapping for path `%1%' missing") % path);
}
if (erase) delDB(nixDB, dbPath2Id, path);
}
Strings ids;
enumDB(nixDB, dbId2Paths, ids);
for (Strings::iterator i = ids.begin();
i != ids.end(); i++)
{
FSId id = parseHash(*i);
Strings idPaths;
queryListDB(nixDB, dbId2Paths, id, idPaths);
for (Strings::iterator j = idPaths.begin();
j != idPaths.end(); )
{
string id2;
if (!queryDB(nixDB, dbPath2Id, *j, id2) ||
id != parseHash(id2)) {
debug(format("erasing path `%1%' from mapping for id %2%")
% *j % (string) id);
j = idPaths.erase(j);
} else j++;
}
setListDB(nixDB, dbId2Paths, id, idPaths);
}
Strings subs;
enumDB(nixDB, dbSubstitutes, subs);
for (Strings::iterator i = subs.begin();
i != subs.end(); i++)
{
FSId srcId = parseHash(*i);
Strings subIds;
queryListDB(nixDB, dbSubstitutes, srcId, subIds);
for (Strings::iterator j = subIds.begin();
j != subIds.end(); )
{
FSId subId = parseHash(*j);
Strings subPaths;
queryListDB(nixDB, dbId2Paths, subId, subPaths);
if (subPaths.size() == 0) {
debug(format("erasing substitute %1% for %2%")
% (string) subId % (string) srcId);
j = subIds.erase(j);
} else j++;
}
setListDB(nixDB, dbSubstitutes, srcId, subIds);
}
Strings sucs;
enumDB(nixDB, dbSuccessors, sucs);
for (Strings::iterator i = sucs.begin();
i != sucs.end(); i++)
{
FSId id1 = parseHash(*i);
string id2;
if (!queryDB(nixDB, dbSuccessors, id1, id2)) abort();
Strings id2Paths;
queryListDB(nixDB, dbId2Paths, id2, id2Paths);
if (id2Paths.size() == 0) {
Strings id2Subs;
queryListDB(nixDB, dbSubstitutes, id2, id2Subs);
if (id2Subs.size() == 0) {
debug(format("successor %1% for %2% missing")
% id2 % (string) id1);
delDB(nixDB, dbSuccessors, (string) id1);
}
}
}
}