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Make regular copyPaths only copy again

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The is new function parameter so just the build hook can opt into the
remote-side building.
This commit is contained in:
John Ericson 2021-01-22 17:56:28 +00:00
parent 5738b08233
commit 141cb9a706
3 changed files with 57 additions and 23 deletions
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7
src/build-remote/build-remote.cc
View file

@ -270,9 +270,11 @@ connected:
auto substitute = settings.buildersUseSubstitutes ? Substitute : NoSubstitute;
auto copyStorePathImpl = sshStore2->isTrusting ? copyStorePathAdapter : copyOrBuildStorePath;
{
Activity act(*logger, lvlTalkative, actUnknown, fmt("copying dependencies to '%s'", storeUri));
copyPaths(store, sshStore2, store->parseStorePathSet(inputs), NoRepair, NoCheckSigs, substitute);
copyPaths(store, sshStore2, store->parseStorePathSet(inputs), NoRepair, NoCheckSigs, substitute, copyStorePathImpl);
}
uploadLock = -1;
@ -285,7 +287,7 @@ connected:
if (!result.success())
throw Error("build of '%s' on '%s' failed: %s", store->printStorePath(*drvPath), storeUri, result.errorMsg);
} else {
copyPaths(store, sshStore2, {*drvPath}, NoRepair, NoCheckSigs, substitute);
copyPaths(store, sshStore2, {*drvPath}, NoRepair, NoCheckSigs, substitute, copyStorePathImpl);
sshStore2->buildPaths({{*drvPath}});
}
@ -298,6 +300,7 @@ connected:
Activity act(*logger, lvlTalkative, actUnknown, fmt("copying outputs from '%s'", storeUri));
for (auto & i : missing)
store->locksHeld.insert(store->printStorePath(i)); /* FIXME: ugly */
/* No `copyStorePathImpl` because we always trust ourselves. */
copyPaths(sshStore2, store, missing, NoRepair, NoCheckSigs, NoSubstitute);
}

53
src/libstore/store-api.cc
View file

@ -819,8 +819,40 @@ void copyStorePath(ref<Store> srcStore, ref<Store> dstStore,
}
void copyStorePathAdapter(ref<Store> srcStore, ref<Store> dstStore,
const ValidPathInfo & info, RepairFlag repair, CheckSigsFlag checkSigs)
{
copyStorePath(srcStore, dstStore, info.path, repair, checkSigs);
}
void copyOrBuildStorePath(ref<Store> srcStore, ref<Store> dstStore,
const ValidPathInfo & info, RepairFlag repair, CheckSigsFlag checkSigs)
{
auto storePath = info.path;
if (dstStore->isTrusting || info.ca) {
copyStorePath(srcStore, dstStore, storePath, repair, checkSigs);
} else if (info.deriver && dstStore->storeDir == srcStore->storeDir) {
auto drvPath = *info.deriver;
auto outputMap = srcStore->queryDerivationOutputMap(drvPath);
auto p = std::find_if(outputMap.begin(), outputMap.end(), [&](auto & i) {
return i.second == storePath;
});
// drv file is always CA
srcStore->ensurePath(drvPath);
copyStorePath(srcStore, dstStore, drvPath, repair, checkSigs);
dstStore->buildPaths({{
drvPath,
p != outputMap.end() ? StringSet { p->first } : StringSet {},
}});
} else {
dstStore->ensurePath(storePath);
}
}
std::map<StorePath, StorePath> copyPaths(ref<Store> srcStore, ref<Store> dstStore, const StorePathSet & storePaths,
RepairFlag repair, CheckSigsFlag checkSigs, SubstituteFlag substitute)
RepairFlag repair, CheckSigsFlag checkSigs, SubstituteFlag substitute,
std::function<void(ref<Store>, ref<Store>, const ValidPathInfo &, RepairFlag, CheckSigsFlag)> copyStorePathImpl)
{
auto valid = dstStore->queryValidPaths(storePaths, substitute);
@ -893,24 +925,7 @@ std::map<StorePath, StorePath> copyPaths(ref<Store> srcStore, ref<Store> dstStor
MaintainCount<decltype(nrRunning)> mc(nrRunning);
showProgress();
try {
if (dstStore->isTrusting || info->ca) {
copyStorePath(srcStore, dstStore, storePath, repair, checkSigs);
} else if (info->deriver && dstStore->storeDir == srcStore->storeDir) {
auto drvPath = *info->deriver;
auto outputMap = srcStore->queryDerivationOutputMap(drvPath);
auto p = std::find_if(outputMap.begin(), outputMap.end(), [&](auto & i) {
return i.second == storePath;
});
// drv file is always CA
srcStore->ensurePath(drvPath);
copyStorePath(srcStore, dstStore, drvPath, repair, checkSigs);
dstStore->buildPaths({{
drvPath,
p != outputMap.end() ? StringSet { p->first } : StringSet {},
}});
} else {
dstStore->ensurePath(storePath);
}
copyStorePathImpl(srcStore, dstStore, *info, repair, checkSigs);
} catch (Error &e) {
nrFailed++;
if (!settings.keepGoing)

20
src/libstore/store-api.hh
View file

@ -738,17 +738,33 @@ void copyStorePath(ref<Store> srcStore, ref<Store> dstStore,
const StorePath & storePath, RepairFlag repair = NoRepair, CheckSigsFlag checkSigs = CheckSigs);
/* copyStorePath wrapped to be used with `copyPaths`. */
void copyStorePathAdapter(ref<Store> srcStore, ref<Store> dstStore,
const ValidPathInfo & info, RepairFlag repair = NoRepair, CheckSigsFlag checkSigs = CheckSigs);
/* The more liberal alternative to `copyStorePathAdapter`, useful for remote
stores that do not trust us. */
void copyOrBuildStorePath(ref<Store> srcStore, ref<Store> dstStore,
const ValidPathInfo & info, RepairFlag repair = NoRepair, CheckSigsFlag checkSigs = CheckSigs);
/* Copy store paths from one store to another. The paths may be copied
in parallel. They are copied in a topologically sorted order (i.e.
if A is a reference of B, then A is copied before B), but the set
of store paths is not automatically closed; use copyClosure() for
that. Returns a map of what each path was copied to the dstStore
as. */
as.
The `copyStorePathImpl` parameter allows doing something other than just
copying. For example, this is used with the build hook to allow the other
side to build dependencies we don't have permission to copy. This behavior
isn't just the default that way `nix copy` etc. still can be relied upon to
not build anything. */
std::map<StorePath, StorePath> copyPaths(ref<Store> srcStore, ref<Store> dstStore,
const StorePathSet & storePaths,
RepairFlag repair = NoRepair,
CheckSigsFlag checkSigs = CheckSigs,
SubstituteFlag substitute = NoSubstitute);
SubstituteFlag substitute = NoSubstitute,
std::function<void(ref<Store>, ref<Store>, const ValidPathInfo &, RepairFlag, CheckSigsFlag)> copyStorePathImpl = copyStorePathAdapter);
/* Copy the closure of the specified paths from one store to another. */