nix-gh/src/libstore/worker-protocol.hh
Eelco Dolstra 6185d25e52
Make 'nix copy --to daemon' run in constant memory (daemon side)
Continuation of 97002b684c. This makes
the daemon use constant memory. For example, it reduces the daemon's
maximum RSS on

  $ nix copy --from ~/my-nix --to daemon /nix/store/1n7x0yv8vq6zi90hfmian84vdhd04bgp-blender-2.79a

from 264 MiB to 7 MiB.

We now use a TunnelSource to prevent the connection from ending up in
an undefined state if an exception is thrown while the NAR is being
sent.

Issue https://github.com/NixOS/nix/issues/1681.
2018-05-30 13:26:48 +02:00

70 lines
1.8 KiB
C++

#pragma once
namespace nix {
#define WORKER_MAGIC_1 0x6e697863
#define WORKER_MAGIC_2 0x6478696f
#define PROTOCOL_VERSION 0x115
#define GET_PROTOCOL_MAJOR(x) ((x) & 0xff00)
#define GET_PROTOCOL_MINOR(x) ((x) & 0x00ff)
typedef enum {
wopIsValidPath = 1,
wopHasSubstitutes = 3,
wopQueryPathHash = 4, // obsolete
wopQueryReferences = 5, // obsolete
wopQueryReferrers = 6,
wopAddToStore = 7,
wopAddTextToStore = 8,
wopBuildPaths = 9,
wopEnsurePath = 10,
wopAddTempRoot = 11,
wopAddIndirectRoot = 12,
wopSyncWithGC = 13,
wopFindRoots = 14,
wopExportPath = 16, // obsolete
wopQueryDeriver = 18, // obsolete
wopSetOptions = 19,
wopCollectGarbage = 20,
wopQuerySubstitutablePathInfo = 21,
wopQueryDerivationOutputs = 22,
wopQueryAllValidPaths = 23,
wopQueryFailedPaths = 24,
wopClearFailedPaths = 25,
wopQueryPathInfo = 26,
wopImportPaths = 27, // obsolete
wopQueryDerivationOutputNames = 28,
wopQueryPathFromHashPart = 29,
wopQuerySubstitutablePathInfos = 30,
wopQueryValidPaths = 31,
wopQuerySubstitutablePaths = 32,
wopQueryValidDerivers = 33,
wopOptimiseStore = 34,
wopVerifyStore = 35,
wopBuildDerivation = 36,
wopAddSignatures = 37,
wopNarFromPath = 38,
wopAddToStoreNar = 39,
wopQueryMissing = 40,
} WorkerOp;
#define STDERR_NEXT 0x6f6c6d67
#define STDERR_READ 0x64617461 // data needed from source
#define STDERR_WRITE 0x64617416 // data for sink
#define STDERR_LAST 0x616c7473
#define STDERR_ERROR 0x63787470
#define STDERR_START_ACTIVITY 0x53545254
#define STDERR_STOP_ACTIVITY 0x53544f50
#define STDERR_RESULT 0x52534c54
Path readStorePath(Store & store, Source & from);
template<class T> T readStorePaths(Store & store, Source & from);
}