Add 'nix eval-hydra-jobs' command
This commit is contained in:
Eelco Dolstra
parent
46a284263f
commit
e375da6899
191
src/nix/eval-hydra-jobs.cc
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191
src/nix/eval-hydra-jobs.cc
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#include "command.hh"
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#include "eval.hh"
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#include "eval-inline.hh"
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#include "derivations.hh"
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#include "common-args.hh"
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#include "json.hh"
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#include "get-drvs.hh"
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using namespace nix;
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static std::string queryMetaStrings(EvalState & state, DrvInfo & drv, const string & name, const string & subAttribute)
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{
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Strings res;
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std::function<void(Value & v)> rec;
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rec = [&](Value & v) {
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state.forceValue(v);
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if (v.type == tString)
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res.push_back(v.string.s);
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else if (v.isList())
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for (unsigned int n = 0; n < v.listSize(); ++n)
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rec(*v.listElems()[n]);
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else if (v.type == tAttrs) {
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auto a = v.attrs->find(state.symbols.create(subAttribute));
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if (a != v.attrs->end())
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res.push_back(state.forceString(*a->value));
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}
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};
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Value * v = drv.queryMeta(name);
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if (v) rec(*v);
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return concatStringsSep(", ", res);
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}
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struct CmdEvalHydraJobs : MixJSON, MixDryRun, InstallableCommand
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{
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std::optional<Path> gcRootsDir;
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CmdEvalHydraJobs()
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{
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mkFlag()
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.longName("gc-roots-dir")
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.description("garbage collector roots directory")
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.labels({"path"})
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.dest(&gcRootsDir);
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}
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std::string description() override
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{
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return "evaluate a Hydra jobset";
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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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"Evaluate Nixpkgs' release-combined jobset:",
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"nix eval-hydra-jobs -f '<nixpkgs/nixos/release-combined.nix>' '' --json"
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},
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};
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}
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void run(ref<Store> store) override
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{
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auto state = getEvalState();
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if (!gcRootsDir) warn("'--gc-roots-dir' not specified");
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if (dryRun) settings.readOnlyMode = true;
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/* Prevent access to paths outside of the Nix search path and
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to the environment. */
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evalSettings.restrictEval = true;
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auto v = installable->toValue(*state).first;
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auto jsonObj = json ? std::make_unique<JSONObject>(std::cout, true) : nullptr;
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std::function<void(Value & vIn, const string & attrPath)> findJobs;
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auto autoArgs = getAutoArgs(*state);
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findJobs = [&](Value & vIn, const string & attrPath)
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{
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try {
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Activity act(*logger, lvlInfo, actUnknown, fmt("evaluating '%s'", attrPath));
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checkInterrupt();
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auto v = state->allocValue();
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state->autoCallFunction(*autoArgs, vIn, *v);
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if (v->type == tAttrs) {
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auto drv = getDerivation(*state, *v, false);
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if (drv) {
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DrvInfo::Outputs outputs = drv->queryOutputs();
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if (drv->querySystem() == "unknown")
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throw EvalError("derivation must have a 'system' attribute");
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auto drvPath = drv->queryDrvPath();
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if (jsonObj) {
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auto res = jsonObj->object(attrPath);
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res.attr("nixName", drv->queryName());
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res.attr("system", drv->querySystem());
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res.attr("drvPath", drvPath);
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res.attr("description", drv->queryMetaString("description"));
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res.attr("license", queryMetaStrings(*state, *drv, "license", "shortName"));
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res.attr("homepage", drv->queryMetaString("homepage"));
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res.attr("maintainers", queryMetaStrings(*state, *drv, "maintainers", "email"));
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res.attr("schedulingPriority", drv->queryMetaInt("schedulingPriority", 100));
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res.attr("timeout", drv->queryMetaInt("timeout", 36000));
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res.attr("maxSilent", drv->queryMetaInt("maxSilent", 7200));
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res.attr("isChannel", drv->queryMetaBool("isHydraChannel", false));
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/* If this is an aggregate, then get its constituents. */
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auto a = v->attrs->get(state->symbols.create("_hydraAggregate"));
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if (a && state->forceBool(*a->value, *a->pos)) {
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auto a = v->attrs->get(state->symbols.create("constituents"));
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if (!a)
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throw EvalError("derivation must have a ‘constituents’ attribute");
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PathSet context;
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state->coerceToString(*a->pos, *a->value, context, true, false);
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PathSet drvs;
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for (auto & i : context)
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if (i.at(0) == '!') {
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size_t index = i.find("!", 1);
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drvs.insert(string(i, index + 1));
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}
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res.attr("constituents", concatStringsSep(" ", drvs));
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}
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/* Register the derivation as a GC root. !!! This
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registers roots for jobs that we may have already
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done. */
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auto localStore = state->store.dynamic_pointer_cast<LocalFSStore>();
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if (gcRootsDir && localStore) {
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Path root = *gcRootsDir + "/" + std::string(baseNameOf(drvPath));
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if (!pathExists(root))
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localStore->addPermRoot(localStore->parseStorePath(drvPath), root, false);
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}
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auto res2 = res.object("outputs");
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for (auto & j : outputs)
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res2.attr(j.first, j.second);
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} else
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std::cout << fmt("%d: %d\n", attrPath, drvPath);
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}
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else {
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if (!state->isDerivation(*v)) {
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for (auto & i : v->attrs->lexicographicOrder()) {
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std::string name(i->name);
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/* Skip jobs with dots in the name. */
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if (name.find('.') != std::string::npos) {
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printError("skipping job with illegal name '%s'", name);
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continue;
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}
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findJobs(*i->value, (attrPath.empty() ? "" : attrPath + ".") + name);
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}
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}
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}
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}
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else if (v->type == tNull) {
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// allow null values, meaning 'do nothing'
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}
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else
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throw TypeError("unsupported value: %s", *v);
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} catch (EvalError & e) {
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if (jsonObj)
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jsonObj->object(attrPath).attr("error", filterANSIEscapes(e.msg(), true));
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else
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printError("in job '%s': %s", attrPath, e.what());
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}
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};
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findJobs(*v, "");
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}
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};
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static auto r1 = registerCommand<CmdEvalHydraJobs>("eval-hydra-jobs");
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