84 lines
2.6 KiB
Rust
84 lines
2.6 KiB
Rust
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use std::io::{Error, ErrorKind};
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use enum_primitive_derive::Primitive;
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use num_traits::{FromPrimitive, ToPrimitive};
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use tokio::io::{AsyncReadExt, AsyncWriteExt};
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use crate::wire::primitive;
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/// Worker Operation
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///
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/// These operations are encoded as unsigned 64 bits before being sent
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/// to the wire. See the [read_op] and
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/// [write_op] operations to serialize/deserialize the
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/// operation on the wire.
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///
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/// Note: for now, we're using the Nix 2.20 operation description. The
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/// operations marked as obsolete are obsolete for Nix 2.20, not
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/// necessarily for Nix 2.3. We'll revisit this later on.
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#[derive(Debug, PartialEq, Primitive)]
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pub enum Operation {
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IsValidPath = 1,
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HasSubstitutes = 3,
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QueryPathHash = 4, // obsolete
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QueryReferences = 5, // obsolete
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QueryReferrers = 6,
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AddToStore = 7,
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AddTextToStore = 8, // obsolete since 1.25, Nix 3.0. Use WorkerProto::Op::AddToStore
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BuildPaths = 9,
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EnsurePath = 10,
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AddTempRoot = 11,
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AddIndirectRoot = 12,
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SyncWithGC = 13,
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FindRoots = 14,
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ExportPath = 16, // obsolete
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QueryDeriver = 18, // obsolete
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SetOptions = 19,
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CollectGarbage = 20,
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QuerySubstitutablePathInfo = 21,
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QueryDerivationOutputs = 22, // obsolete
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QueryAllValidPaths = 23,
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QueryFailedPaths = 24,
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ClearFailedPaths = 25,
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QueryPathInfo = 26,
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ImportPaths = 27, // obsolete
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QueryDerivationOutputNames = 28, // obsolete
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QueryPathFromHashPart = 29,
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QuerySubstitutablePathInfos = 30,
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QueryValidPaths = 31,
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QuerySubstitutablePaths = 32,
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QueryValidDerivers = 33,
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OptimiseStore = 34,
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VerifyStore = 35,
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BuildDerivation = 36,
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AddSignatures = 37,
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NarFromPath = 38,
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AddToStoreNar = 39,
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QueryMissing = 40,
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QueryDerivationOutputMap = 41,
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RegisterDrvOutput = 42,
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QueryRealisation = 43,
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AddMultipleToStore = 44,
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AddBuildLog = 45,
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BuildPathsWithResults = 46,
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AddPermRoot = 47,
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}
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/// Read a worker [Operation] from the wire.
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pub async fn read_op<R: AsyncReadExt + Unpin>(r: &mut R) -> std::io::Result<Operation> {
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let op_number = primitive::read_u64(r).await?;
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Operation::from_u64(op_number).ok_or(Error::new(
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ErrorKind::Other,
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format!("Invalid OP number {}", op_number),
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))
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}
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/// Write a worker [Operation] to the wire.
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pub async fn write_op<W: AsyncWriteExt + Unpin>(w: &mut W, op: &Operation) -> std::io::Result<()> {
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let op = Operation::to_u64(op).ok_or(Error::new(
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ErrorKind::Other,
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format!("Can't convert the OP {:?} to u64", op),
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))?;
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w.write_u64(op).await
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}
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