142 lines
4.5 KiB
C++
142 lines
4.5 KiB
C++
#include "command.hh"
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#include "shared.hh"
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#include "store-api.hh"
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#include "json.hh"
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#include <iomanip>
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#include <algorithm>
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using namespace nix;
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struct CmdPathInfo : StorePathsCommand
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{
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bool showSize = false;
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bool showClosureSize = false;
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bool showSigs = false;
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bool json = false;
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CmdPathInfo()
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{
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mkFlag('s', "size", "print size of the NAR dump of each path", &showSize);
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mkFlag('S', "closure-size", "print sum size of the NAR dumps of the closure of each path", &showClosureSize);
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mkFlag(0, "sigs", "show signatures", &showSigs);
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mkFlag(0, "json", "produce JSON output", &json);
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}
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std::string name() override
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{
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return "path-info";
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}
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std::string description() override
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{
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return "query information about store paths";
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}
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Examples examples() override
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{
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return {
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Example{
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"To show the closure sizes of every path in the current NixOS system closure, sorted by size:",
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"nix path-info -rS /run/current-system | sort -nk2"
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},
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Example{
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"To check the existence of a path in a binary cache:",
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"nix path-info -r /nix/store/7qvk5c91...-geeqie-1.1 --store https://cache.nixos.org/"
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},
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Example{
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"To print the 10 most recently added paths (using --json and the jq(1) command):",
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"nix path-info --all --json | jq -r 'sort_by(.registrationTime)[-11:-1][].path'"
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},
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};
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}
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void run(ref<Store> store, Paths storePaths) override
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{
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size_t pathLen = 0;
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for (auto & storePath : storePaths)
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pathLen = std::max(pathLen, storePath.size());
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auto getClosureSize = [&](const Path & storePath) -> unsigned long long {
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unsigned long long totalSize = 0;
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PathSet closure;
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store->computeFSClosure(storePath, closure, false, false);
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for (auto & p : closure)
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totalSize += store->queryPathInfo(p)->narSize;
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return totalSize;
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};
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if (json) {
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JSONList jsonRoot(std::cout, true);
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for (auto storePath : storePaths) {
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auto info = store->queryPathInfo(storePath);
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storePath = info->path;
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auto jsonPath = jsonRoot.object();
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jsonPath
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.attr("path", storePath)
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.attr("narHash", info->narHash.to_string())
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.attr("narSize", info->narSize);
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if (showClosureSize)
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jsonPath.attr("closureSize", getClosureSize(storePath));
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if (info->deriver != "")
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jsonPath.attr("deriver", info->deriver);
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{
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auto jsonRefs = jsonPath.list("references");
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for (auto & ref : info->references)
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jsonRefs.elem(ref);
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}
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if (info->registrationTime)
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jsonPath.attr("registrationTime", info->registrationTime);
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if (info->ultimate)
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jsonPath.attr("ultimate", info->ultimate);
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if (info->ca != "")
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jsonPath.attr("ca", info->ca);
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if (!info->sigs.empty()) {
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auto jsonSigs = jsonPath.list("signatures");
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for (auto & sig : info->sigs)
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jsonSigs.elem(sig);
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}
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}
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}
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else {
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for (auto storePath : storePaths) {
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auto info = store->queryPathInfo(storePath);
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storePath = info->path; // FIXME: screws up padding
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std::cout << storePath << std::string(std::max(0, (int) pathLen - (int) storePath.size()), ' ');
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if (showSize)
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std::cout << '\t' << std::setw(11) << info->narSize;
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if (showClosureSize)
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std::cout << '\t' << std::setw(11) << getClosureSize(storePath);
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if (showSigs) {
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std::cout << '\t';
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Strings ss;
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if (info->ultimate) ss.push_back("ultimate");
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if (info->ca != "") ss.push_back("ca:" + info->ca);
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for (auto & sig : info->sigs) ss.push_back(sig);
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std::cout << concatStringsSep(" ", ss);
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}
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std::cout << std::endl;
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}
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}
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}
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};
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static RegisterCommand r1(make_ref<CmdPathInfo>());
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