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https://github.com/NixOS/nix.git
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0deb492b3d
This partially reverts commit5e46df973f, partially reversing changes made to8c789db05b. We do this because Hydra, while using the newer version of the protocol, still uses this command, even though Nix (as a client) doesn't use it. On that basis, we don't want to remove it (or consider it only part of the older versions of the protocol) until Hydra no longer uses the Legacy SSH Protocol.
106 lines
3.4 KiB
C++
106 lines
3.4 KiB
C++
#include "nix/store/serve-protocol-connection.hh"
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#include "nix/store/serve-protocol-impl.hh"
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#include "nix/store/build-result.hh"
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#include "nix/store/derivations.hh"
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namespace nix {
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ServeProto::Version ServeProto::BasicClientConnection::handshake(
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BufferedSink & to, Source & from, ServeProto::Version localVersion, std::string_view host)
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{
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to << SERVE_MAGIC_1 << localVersion;
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to.flush();
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unsigned int magic = readInt(from);
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if (magic != SERVE_MAGIC_2)
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throw Error("'nix-store --serve' protocol mismatch from '%s'", host);
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auto remoteVersion = readInt(from);
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if (GET_PROTOCOL_MAJOR(remoteVersion) != 0x200 || GET_PROTOCOL_MINOR(remoteVersion) < 5)
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throw Error("unsupported 'nix-store --serve' protocol version on '%s'", host);
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return std::min(remoteVersion, localVersion);
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}
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ServeProto::Version
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ServeProto::BasicServerConnection::handshake(BufferedSink & to, Source & from, ServeProto::Version localVersion)
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{
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unsigned int magic = readInt(from);
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if (magic != SERVE_MAGIC_1)
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throw Error("protocol mismatch");
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to << SERVE_MAGIC_2 << localVersion;
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to.flush();
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auto remoteVersion = readInt(from);
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return std::min(remoteVersion, localVersion);
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}
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StorePathSet ServeProto::BasicClientConnection::queryValidPaths(
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const StoreDirConfig & store, bool lock, const StorePathSet & paths, SubstituteFlag maybeSubstitute)
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{
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to << ServeProto::Command::QueryValidPaths << lock << maybeSubstitute;
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write(store, *this, paths);
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to.flush();
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return Serialise<StorePathSet>::read(store, *this);
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}
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std::map<StorePath, UnkeyedValidPathInfo>
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ServeProto::BasicClientConnection::queryPathInfos(const StoreDirConfig & store, const StorePathSet & paths)
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{
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std::map<StorePath, UnkeyedValidPathInfo> infos;
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to << ServeProto::Command::QueryPathInfos;
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ServeProto::write(store, *this, paths);
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to.flush();
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while (true) {
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auto storePathS = readString(from);
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if (storePathS == "")
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break;
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auto storePath = store.parseStorePath(storePathS);
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assert(paths.count(storePath) == 1);
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auto info = ServeProto::Serialise<UnkeyedValidPathInfo>::read(store, *this);
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infos.insert_or_assign(std::move(storePath), std::move(info));
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}
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return infos;
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}
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void ServeProto::BasicClientConnection::putBuildDerivationRequest(
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const StoreDirConfig & store,
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const StorePath & drvPath,
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const BasicDerivation & drv,
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const ServeProto::BuildOptions & options)
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{
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to << ServeProto::Command::BuildDerivation << store.printStorePath(drvPath);
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writeDerivation(to, store, drv);
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ServeProto::write(store, *this, options);
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to.flush();
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}
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BuildResult ServeProto::BasicClientConnection::getBuildDerivationResponse(const StoreDirConfig & store)
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{
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return ServeProto::Serialise<BuildResult>::read(store, *this);
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}
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void ServeProto::BasicClientConnection::narFromPath(
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const StoreDirConfig & store, const StorePath & path, std::function<void(Source &)> fun)
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{
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to << ServeProto::Command::DumpStorePath << store.printStorePath(path);
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to.flush();
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fun(from);
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}
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void ServeProto::BasicClientConnection::importPaths(const StoreDirConfig & store, std::function<void(Sink &)> fun)
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{
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to << ServeProto::Command::ImportPaths;
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fun(to);
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to.flush();
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if (readInt(from) != 1)
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throw Error("remote machine failed to import closure");
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}
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} // namespace nix
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