80 lines
2 KiB
C++
80 lines
2 KiB
C++
#include "command.hh"
|
||
#include "shared.hh"
|
||
#include "store-api.hh"
|
||
#include "sync.hh"
|
||
#include "thread-pool.hh"
|
||
|
||
#include <atomic>
|
||
|
||
using namespace nix;
|
||
|
||
struct CmdCopy : StorePathsCommand
|
||
{
|
||
std::string srcUri, dstUri;
|
||
|
||
CmdCopy()
|
||
{
|
||
mkFlag(0, "from", "store-uri", "URI of the source Nix store", &srcUri);
|
||
mkFlag(0, "to", "store-uri", "URI of the destination Nix store", &dstUri);
|
||
}
|
||
|
||
std::string name() override
|
||
{
|
||
return "copy";
|
||
}
|
||
|
||
std::string description() override
|
||
{
|
||
return "copy paths between Nix stores";
|
||
}
|
||
|
||
Examples examples() override
|
||
{
|
||
return {
|
||
Example{
|
||
"To copy Firefox to the local store to a binary cache in file:///tmp/cache:",
|
||
"nix copy --to file:///tmp/cache -r $(type -p firefox)"
|
||
},
|
||
};
|
||
}
|
||
|
||
void run(ref<Store> store, Paths storePaths) override
|
||
{
|
||
if (srcUri.empty() && dstUri.empty())
|
||
throw UsageError("you must pass ‘--from’ and/or ‘--to’");
|
||
|
||
ref<Store> srcStore = srcUri.empty() ? store : openStoreAt(srcUri);
|
||
ref<Store> dstStore = dstUri.empty() ? store : openStoreAt(dstUri);
|
||
|
||
std::string copiedLabel = "copied";
|
||
|
||
logger->setExpected(copiedLabel, storePaths.size());
|
||
|
||
ThreadPool pool;
|
||
|
||
processGraph<Path>(pool,
|
||
PathSet(storePaths.begin(), storePaths.end()),
|
||
|
||
[&](const Path & storePath) {
|
||
return srcStore->queryPathInfo(storePath)->references;
|
||
},
|
||
|
||
[&](const Path & storePath) {
|
||
checkInterrupt();
|
||
|
||
if (!dstStore->isValidPath(storePath)) {
|
||
Activity act(*logger, lvlInfo, format("copying ‘%s’...") % storePath);
|
||
|
||
copyStorePath(srcStore, dstStore, storePath);
|
||
|
||
logger->incProgress(copiedLabel);
|
||
} else
|
||
logger->incExpected(copiedLabel, -1);
|
||
});
|
||
|
||
pool.process();
|
||
}
|
||
};
|
||
|
||
static RegisterCommand r1(make_ref<CmdCopy>());
|