1 files changed, 192 insertions, 0 deletions
diff --git a/src/libstore/worker-protocol.cc b/src/libstore/worker-protocol.cc
new file mode 100644
index 000000000..51bb12026
--- /dev/null
+++ b/src/libstore/worker-protocol.cc
@@ -0,0 +1,192 @@
+#include "serialise.hh"
+#include "util.hh"
+#include "path-with-outputs.hh"
+#include "store-api.hh"
+#include "build-result.hh"
+#include "worker-protocol.hh"
+#include "archive.hh"
+#include "derivations.hh"
+
+#include <nlohmann/json.hpp>
+
+namespace nix {
+
+std::string WorkerProto<std::string>::read(const Store & store, Source & from)
+{
+    return readString(from);
+}
+
+void WorkerProto<std::string>::write(const Store & store, Sink & out, const std::string & str)
+{
+    out << str;
+}
+
+
+StorePath WorkerProto<StorePath>::read(const Store & store, Source & from)
+{
+    return store.parseStorePath(readString(from));
+}
+
+void WorkerProto<StorePath>::write(const Store & store, Sink & out, const StorePath & storePath)
+{
+    out << store.printStorePath(storePath);
+}
+
+
+std::optional<TrustedFlag> WorkerProto<std::optional<TrustedFlag>>::read(const Store & store, Source & from)
+{
+    auto temp = readNum<uint8_t>(from);
+    switch (temp) {
+        case 0:
+            return std::nullopt;
+        case 1:
+            return { Trusted };
+        case 2:
+            return { NotTrusted };
+        default:
+            throw Error("Invalid trusted status from remote");
+    }
+}
+
+void WorkerProto<std::optional<TrustedFlag>>::write(const Store & store, Sink & out, const std::optional<TrustedFlag> & optTrusted)
+{
+    if (!optTrusted)
+        out << (uint8_t)0;
+    else {
+        switch (*optTrusted) {
+        case Trusted:
+            out << (uint8_t)1;
+            break;
+        case NotTrusted:
+            out << (uint8_t)2;
+            break;
+        default:
+            assert(false);
+        };
+    }
+}
+
+
+ContentAddress WorkerProto<ContentAddress>::read(const Store & store, Source & from)
+{
+    return ContentAddress::parse(readString(from));
+}
+
+void WorkerProto<ContentAddress>::write(const Store & store, Sink & out, const ContentAddress & ca)
+{
+    out << renderContentAddress(ca);
+}
+
+
+DerivedPath WorkerProto<DerivedPath>::read(const Store & store, Source & from)
+{
+    auto s = readString(from);
+    return DerivedPath::parseLegacy(store, s);
+}
+
+void WorkerProto<DerivedPath>::write(const Store & store, Sink & out, const DerivedPath & req)
+{
+    out << req.to_string_legacy(store);
+}
+
+
+Realisation WorkerProto<Realisation>::read(const Store & store, Source & from)
+{
+    std::string rawInput = readString(from);
+    return Realisation::fromJSON(
+        nlohmann::json::parse(rawInput),
+        "remote-protocol"
+    );
+}
+
+void WorkerProto<Realisation>::write(const Store & store, Sink & out, const Realisation & realisation)
+{
+    out << realisation.toJSON().dump();
+}
+
+
+DrvOutput WorkerProto<DrvOutput>::read(const Store & store, Source & from)
+{
+    return DrvOutput::parse(readString(from));
+}
+
+void WorkerProto<DrvOutput>::write(const Store & store, Sink & out, const DrvOutput & drvOutput)
+{
+    out << drvOutput.to_string();
+}
+
+
+KeyedBuildResult WorkerProto<KeyedBuildResult>::read(const Store & store, Source & from)
+{
+    auto path = WorkerProto<DerivedPath>::read(store, from);
+    auto br = WorkerProto<BuildResult>::read(store, from);
+    return KeyedBuildResult {
+        std::move(br),
+        /* .path = */ std::move(path),
+    };
+}
+
+void WorkerProto<KeyedBuildResult>::write(const Store & store, Sink & to, const KeyedBuildResult & res)
+{
+    workerProtoWrite(store, to, res.path);
+    workerProtoWrite(store, to, static_cast<const BuildResult &>(res));
+}
+
+
+BuildResult WorkerProto<BuildResult>::read(const Store & store, Source & from)
+{
+    BuildResult res;
+    res.status = (BuildResult::Status) readInt(from);
+    from
+        >> res.errorMsg
+        >> res.timesBuilt
+        >> res.isNonDeterministic
+        >> res.startTime
+        >> res.stopTime;
+    auto builtOutputs = WorkerProto<DrvOutputs>::read(store, from);
+    for (auto && [output, realisation] : builtOutputs)
+        res.builtOutputs.insert_or_assign(
+            std::move(output.outputName),
+            std::move(realisation));
+    return res;
+}
+
+void WorkerProto<BuildResult>::write(const Store & store, Sink & to, const BuildResult & res)
+{
+    to
+        << res.status
+        << res.errorMsg
+        << res.timesBuilt
+        << res.isNonDeterministic
+        << res.startTime
+        << res.stopTime;
+    DrvOutputs builtOutputs;
+    for (auto & [output, realisation] : res.builtOutputs)
+        builtOutputs.insert_or_assign(realisation.id, realisation);
+    workerProtoWrite(store, to, builtOutputs);
+}
+
+
+std::optional<StorePath> WorkerProto<std::optional<StorePath>>::read(const Store & store, Source & from)
+{
+    auto s = readString(from);
+    return s == "" ? std::optional<StorePath> {} : store.parseStorePath(s);
+}
+
+void WorkerProto<std::optional<StorePath>>::write(const Store & store, Sink & out, const std::optional<StorePath> & storePathOpt)
+{
+    out << (storePathOpt ? store.printStorePath(*storePathOpt) : "");
+}
+
+
+std::optional<ContentAddress> WorkerProto<std::optional<ContentAddress>>::read(const Store & store, Source & from)
+{
+    return ContentAddress::parseOpt(readString(from));
+}
+
+void WorkerProto<std::optional<ContentAddress>>::write(const Store & store, Sink & out, const std::optional<ContentAddress> & caOpt)
+{
+    out << (caOpt ? renderContentAddress(*caOpt) : "");
+}
+
+}