nix eval-hydra-jobs: Remove

On second thought, let's move this back to Hydra.

1 files changed, 0 insertions, 412 deletions

diff --git a/src/nix/eval-hydra-jobs.cc b/src/nix/eval-hydra-jobs.cc
deleted file mode 100644
index f66fb3571..000000000
--- a/src/nix/eval-hydra-jobs.cc
+++ /dev/null
@@ -1,412 +0,0 @@
-#include "command.hh"
-#include "eval.hh"
-#include "eval-inline.hh"
-#include "derivations.hh"
-#include "common-args.hh"
-#include "json.hh"
-#include "get-drvs.hh"
-#include "attr-path.hh"
-
-#include <nlohmann/json.hpp>
-#include <sys/resource.h>
-
-using namespace nix;
-
-static std::string queryMetaStrings(EvalState & state, DrvInfo & drv, const string & name, const string & subAttribute)
-{
-    Strings res;
-    std::function<void(Value & v)> rec;
-
-    rec = [&](Value & v) {
-        state.forceValue(v);
-        if (v.type == tString)
-            res.push_back(v.string.s);
-        else if (v.isList())
-            for (unsigned int n = 0; n < v.listSize(); ++n)
-                rec(*v.listElems()[n]);
-        else if (v.type == tAttrs) {
-            auto a = v.attrs->find(state.symbols.create(subAttribute));
-            if (a != v.attrs->end())
-                res.push_back(state.forceString(*a->value));
-        }
-    };
-
-    Value * v = drv.queryMeta(name);
-    if (v) rec(*v);
-
-    return concatStringsSep(", ", res);
-}
-
-struct CmdEvalHydraJobs : MixJSON, MixDryRun, InstallableCommand
-{
-    std::optional<Path> gcRootsDir;
-    size_t nrWorkers = 1;
-    size_t maxMemorySize = 4ULL * 1024;
-
-    CmdEvalHydraJobs()
-    {
-        mkFlag()
-            .longName("gc-roots-dir")
-            .description("garbage collector roots directory")
-            .labels({"path"})
-            .dest(&gcRootsDir);
-
-        mkIntFlag(0, "workers", "number of concurrent worker processes", &nrWorkers);
-
-        mkIntFlag(0, "max-memory-size", "maximum memory usage per worker process (in MiB)", &maxMemorySize);
-    }
-
-    std::string description() override
-    {
-        return "evaluate a Hydra jobset";
-    }
-
-    Examples examples() override
-    {
-        return {
-            Example{
-                "Evaluate Nixpkgs' release-combined jobset:",
-                "nix eval-hydra-jobs -f '<nixpkgs/nixos/release-combined.nix>' '' --json"
-            },
-        };
-    }
-
-    Strings getDefaultFlakeAttrPaths() override
-    {
-        return {"hydraJobs", "checks"};
-    }
-
-    void worker(AutoCloseFD & to, AutoCloseFD & from)
-    {
-        auto state = getEvalState();
-
-        // FIXME: should re-open state->store.
-
-        if (dryRun) settings.readOnlyMode = true;
-
-        /* Prevent access to paths outside of the Nix search path and
-           to the environment. */
-        evalSettings.restrictEval = true;
-
-        auto autoArgs = getAutoArgs(*state);
-
-        auto vTop = installable->toValue(*state).first;
-
-        auto vRoot = state->allocValue();
-        state->autoCallFunction(*autoArgs, *vTop, *vRoot);
-
-        while (true) {
-            /* Wait for the master to send us a job name. */
-            writeLine(to.get(), "next");
-
-            auto s = readLine(from.get());
-            if (s == "exit") break;
-            if (!hasPrefix(s, "do ")) abort();
-            std::string attrPath(s, 3);
-
-            debug("worker process %d at '%s'", getpid(), attrPath);
-
-            /* Evaluate it and send info back to the master. */
-            nlohmann::json reply;
-
-            try {
-                auto v = findAlongAttrPath(*state, attrPath, *autoArgs, *vRoot).first;
-
-                state->forceValue(*v);
-
-                if (auto drv = getDerivation(*state, *v, false)) {
-
-                    DrvInfo::Outputs outputs = drv->queryOutputs();
-
-                    if (drv->querySystem() == "unknown")
-                        throw EvalError("derivation must have a 'system' attribute");
-
-                    auto drvPath = drv->queryDrvPath();
-
-                    nlohmann::json job;
-
-                    job["nixName"] = drv->queryName();
-                    job["system"] =drv->querySystem();
-                    job["drvPath"] = drvPath;
-                    job["description"] = drv->queryMetaString("description");
-                    job["license"] = queryMetaStrings(*state, *drv, "license", "shortName");
-                    job["homepage"] = drv->queryMetaString("homepage");
-                    job["maintainers"] = queryMetaStrings(*state, *drv, "maintainers", "email");
-                    job["schedulingPriority"] = drv->queryMetaInt("schedulingPriority", 100);
-                    job["timeout"] = drv->queryMetaInt("timeout", 36000);
-                    job["maxSilent"] = drv->queryMetaInt("maxSilent", 7200);
-                    job["isChannel"] = drv->queryMetaBool("isHydraChannel", false);
-
-                    /* If this is an aggregate, then get its constituents. */
-                    auto a = v->attrs->get(state->symbols.create("_hydraAggregate"));
-                    if (a && state->forceBool(*a->value, *a->pos)) {
-                        auto a = v->attrs->get(state->symbols.create("constituents"));
-                        if (!a)
-                            throw EvalError("derivation must have a ‘constituents’ attribute");
-
-
-                        PathSet context;
-                        state->coerceToString(*a->pos, *a->value, context, true, false);
-                        for (auto & i : context)
-                            if (i.at(0) == '!') {
-                                size_t index = i.find("!", 1);
-                                job["constituents"].push_back(string(i, index + 1));
-                            }
-
-                        state->forceList(*a->value, *a->pos);
-                        for (unsigned int n = 0; n < a->value->listSize(); ++n) {
-                            auto v = a->value->listElems()[n];
-                            state->forceValue(*v);
-                            if (v->type == tString)
-                                job["namedConstituents"].push_back(state->forceStringNoCtx(*v));
-                        }
-                    }
-
-                    /* Register the derivation as a GC root.  !!! This
-                       registers roots for jobs that we may have already
-                       done. */
-                    auto localStore = state->store.dynamic_pointer_cast<LocalFSStore>();
-                    if (gcRootsDir && localStore) {
-                        Path root = *gcRootsDir + "/" + std::string(baseNameOf(drvPath));
-                        if (!pathExists(root))
-                            localStore->addPermRoot(localStore->parseStorePath(drvPath), root, false);
-                    }
-
-                    nlohmann::json out;
-                    for (auto & j : outputs)
-                        out[j.first] = j.second;
-                    job["outputs"] = std::move(out);
-
-                    reply["job"] = std::move(job);
-                }
-
-                else if (v->type == tAttrs) {
-                    auto attrs = nlohmann::json::array();
-                    StringSet ss;
-                    for (auto & i : v->attrs->lexicographicOrder()) {
-                        std::string name(i->name);
-                        if (name.find('.') != std::string::npos || name.find(' ') != std::string::npos) {
-                            printError("skipping job with illegal name '%s'", name);
-                            continue;
-                        }
-                        attrs.push_back(name);
-                    }
-                    reply["attrs"] = std::move(attrs);
-                }
-
-            } catch (EvalError & e) {
-                reply["error"] = filterANSIEscapes(e.msg(), true);
-            }
-
-            writeLine(to.get(), reply.dump());
-
-            /* If our RSS exceeds the maximum, exit. The master will
-               start a new process. */
-            struct rusage r;
-            getrusage(RUSAGE_SELF, &r);
-            if ((size_t) r.ru_maxrss > maxMemorySize * 1024) break;
-        }
-
-        writeLine(to.get(), "restart");
-    }
-
-    void run(ref<Store> store) override
-    {
-        settings.requireExperimentalFeature("eval-hydra-jobs");
-
-        if (!gcRootsDir) warn("'--gc-roots-dir' not specified");
-
-        struct State
-        {
-            std::set<std::string> todo{""};
-            std::set<std::string> active;
-            nlohmann::json jobs;
-            std::exception_ptr exc;
-        };
-
-        std::condition_variable wakeup;
-
-        Sync<State> state_;
-
-        /* Start a handler thread per worker process. */
-        auto handler = [this, &state_, &wakeup]()
-        {
-            try {
-                pid_t pid = -1;
-                AutoCloseFD from, to;
-
-                while (true) {
-
-                    /* Start a new worker process if necessary. */
-                    if (pid == -1) {
-                        Pipe toPipe, fromPipe;
-                        toPipe.create();
-                        fromPipe.create();
-                        pid = startProcess(
-                            [this,
-                             to{std::make_shared<AutoCloseFD>(std::move(fromPipe.writeSide))},
-                             from{std::make_shared<AutoCloseFD>(std::move(toPipe.readSide))}
-                            ]()
-                            {
-                                try {
-                                    worker(*to, *from);
-                                } catch (std::exception & e) {
-                                    nlohmann::json err;
-                                    err["error"] = e.what();
-                                    writeLine(to->get(), err.dump());
-                                }
-                            },
-                            ProcessOptions { .allowVfork = false });
-                        from = std::move(fromPipe.readSide);
-                        to = std::move(toPipe.writeSide);
-                        debug("created worker process %d", pid);
-                    }
-
-                    /* Check whether the existing worker process is still there. */
-                    auto s = readLine(from.get());
-                    if (s == "restart") {
-                        pid = -1;
-                        continue;
-                    } else if (s != "next") {
-                        auto json = nlohmann::json::parse(s);
-                        throw Error("worker error: %s", (std::string) json["error"]);
-                    }
-
-                    /* Wait for a job name to become available. */
-                    std::string attrPath;
-
-                    while (true) {
-                        checkInterrupt();
-                        auto state(state_.lock());
-                        if ((state->todo.empty() && state->active.empty()) || state->exc) {
-                            writeLine(to.get(), "exit");
-                            return;
-                        }
-                        if (!state->todo.empty()) {
-                            attrPath = *state->todo.begin();
-                            state->todo.erase(state->todo.begin());
-                            state->active.insert(attrPath);
-                            break;
-                        } else
-                            state.wait(wakeup);
-                    }
-
-                    Activity act(*logger, lvlInfo, actUnknown, fmt("evaluating '%s'", attrPath));
-
-                    /* Tell the worker to evaluate it. */
-                    writeLine(to.get(), "do " + attrPath);
-
-                    /* Wait for the response. */
-                    auto response = nlohmann::json::parse(readLine(from.get()));
-
-                    /* Handle the response. */
-                    StringSet newAttrs;
-
-                    if (response.find("job") != response.end()) {
-                        auto state(state_.lock());
-                        if (json)
-                            state->jobs[attrPath] = response["job"];
-                        else
-                            std::cout << fmt("%d: %d\n", attrPath, (std::string) response["job"]["drvPath"]);
-                    }
-
-                    if (response.find("attrs") != response.end()) {
-                        for (auto & i : response["attrs"]) {
-                            auto s = (attrPath.empty() ? "" : attrPath + ".") + (std::string) i;
-                            newAttrs.insert(s);
-                        }
-                    }
-
-                    if (response.find("error") != response.end()) {
-                        auto state(state_.lock());
-                        if (json)
-                            state->jobs[attrPath]["error"] = response["error"];
-                        else
-                            printError("error in job '%s': %s",
-                                attrPath, (std::string) response["error"]);
-                    }
-
-                    /* Add newly discovered job names to the queue. */
-                    {
-                        auto state(state_.lock());
-                        state->active.erase(attrPath);
-                        for (auto & s : newAttrs)
-                            state->todo.insert(s);
-                        wakeup.notify_all();
-                    }
-                }
-            } catch (...) {
-                auto state(state_.lock());
-                state->exc = std::current_exception();
-                wakeup.notify_all();
-            }
-        };
-
-        std::vector<std::thread> threads;
-        for (size_t i = 0; i < nrWorkers; i++)
-            threads.emplace_back(std::thread(handler));
-
-        for (auto & thread : threads)
-            thread.join();
-
-        auto state(state_.lock());
-
-        if (state->exc)
-            std::rethrow_exception(state->exc);
-
-        /* For aggregate jobs that have named consistuents
-           (i.e. constituents that are a job name rather than a
-           derivation), look up the referenced job and add it to the
-           dependencies of the aggregate derivation. */
-        for (auto i = state->jobs.begin(); i != state->jobs.end(); ++i) {
-            auto jobName = i.key();
-            auto & job = i.value();
-
-            auto named = job.find("namedConstituents");
-            if (named == job.end()) continue;
-
-            if (dryRun) {
-                for (std::string jobName2 : *named) {
-                    auto job2 = state->jobs.find(jobName2);
-                    if (job2 == state->jobs.end())
-                        throw Error("aggregate job '%s' references non-existent job '%s'", jobName, jobName2);
-                    std::string drvPath2 = (*job2)["drvPath"];
-                    job["constituents"].push_back(drvPath2);
-                }
-            } else {
-                std::string drvPath = job["drvPath"];
-                auto drv = readDerivation(*store, drvPath);
-
-                for (std::string jobName2 : *named) {
-                    auto job2 = state->jobs.find(jobName2);
-                    if (job2 == state->jobs.end())
-                        throw Error("aggregate job '%s' references non-existent job '%s'", jobName, jobName2);
-                    std::string drvPath2 = (*job2)["drvPath"];
-                    auto drv2 = readDerivation(*store, drvPath2);
-                    job["constituents"].push_back(drvPath2);
-                    drv.inputDrvs[store->parseStorePath(drvPath2)] = {drv2.outputs.begin()->first};
-                }
-
-                std::string drvName(store->parseStorePath(drvPath).name());
-                assert(hasSuffix(drvName, drvExtension));
-                drvName.resize(drvName.size() - drvExtension.size());
-                auto h = hashDerivationModulo(*store, drv, true);
-                auto outPath = store->makeOutputPath("out", h, drvName);
-                drv.env["out"] = store->printStorePath(outPath);
-                drv.outputs.insert_or_assign("out", DerivationOutput(outPath.clone(), "", ""));
-                auto newDrvPath = store->printStorePath(writeDerivation(store, drv, drvName));
-
-                debug("rewrote aggregate derivation %s -> %s", drvPath, newDrvPath);
-
-                job["drvPath"] = newDrvPath;
-                job["outputs"]["out"] = store->printStorePath(outPath);
-            }
-
-            job.erase("namedConstituents");
-        }
-
-        if (json) std::cout << state->jobs.dump(2) << "\n";
-    }
-};
-
-static auto r1 = registerCommand<CmdEvalHydraJobs>("eval-hydra-jobs");