mirror of
https://github.com/nushell/nushell.git
synced 2024-11-22 00:13:21 +01:00
Expose polars avro support (#10019)
# Description Exposes polars avro support via dfr open and dfr to-avro --------- Co-authored-by: Jack Wright <jack.wright@disqo.com>
This commit is contained in:
Jack Wright
GitHub
parent
3ed45c7ba8
commit
7a123d3eb1
63
Cargo.lock
generated
63
Cargo.lock
generated
@ -27,6 +27,12 @@ version = "1.0.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
|
||||
|
||||
[[package]]
|
||||
name = "adler32"
|
||||
version = "1.2.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "aae1277d39aeec15cb388266ecc24b11c80469deae6067e17a1a7aa9e5c1f234"
|
||||
|
||||
[[package]]
|
||||
name = "ahash"
|
||||
version = "0.8.3"
|
||||
@ -166,6 +172,7 @@ checksum = "15ae0428d69ab31d7b2adad22a752d6f11fef2e901d2262d0cad4f5cb08b7093"
|
||||
dependencies = [
|
||||
"ahash",
|
||||
"arrow-format",
|
||||
"avro-schema",
|
||||
"base64",
|
||||
"bytemuck",
|
||||
"chrono",
|
||||
@ -273,6 +280,20 @@ version = "1.1.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
|
||||
|
||||
[[package]]
|
||||
name = "avro-schema"
|
||||
version = "0.3.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "b5281855b39aba9684d2f47bf96983fbfd8f1725f12fabb0513a8ab879647bbd"
|
||||
dependencies = [
|
||||
"crc",
|
||||
"fallible-streaming-iterator",
|
||||
"libflate",
|
||||
"serde",
|
||||
"serde_json",
|
||||
"snap",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "backtrace"
|
||||
version = "0.3.68"
|
||||
@ -740,6 +761,21 @@ dependencies = [
|
||||
"libc",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "crc"
|
||||
version = "2.1.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "49fc9a695bca7f35f5f4c15cddc84415f66a74ea78eef08e90c5024f2b540e23"
|
||||
dependencies = [
|
||||
"crc-catalog",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "crc-catalog"
|
||||
version = "1.1.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ccaeedb56da03b09f598226e25e80088cb4cd25f316e6e4df7d695f0feeb1403"
|
||||
|
||||
[[package]]
|
||||
name = "crc32fast"
|
||||
version = "1.3.2"
|
||||
@ -2022,6 +2058,26 @@ version = "0.2.147"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "b4668fb0ea861c1df094127ac5f1da3409a82116a4ba74fca2e58ef927159bb3"
|
||||
|
||||
[[package]]
|
||||
name = "libflate"
|
||||
version = "1.4.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "5ff4ae71b685bbad2f2f391fe74f6b7659a34871c08b210fdc039e43bee07d18"
|
||||
dependencies = [
|
||||
"adler32",
|
||||
"crc32fast",
|
||||
"libflate_lz77",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "libflate_lz77"
|
||||
version = "1.2.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "a52d3a8bfc85f250440e4424db7d857e241a3aebbbe301f3eb606ab15c39acbf"
|
||||
dependencies = [
|
||||
"rle-decode-fast",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "libgit2-sys"
|
||||
version = "0.15.2+1.6.4"
|
||||
@ -2604,6 +2660,7 @@ dependencies = [
|
||||
"nu-test-support",
|
||||
"num 0.4.0",
|
||||
"polars",
|
||||
"polars-io",
|
||||
"serde",
|
||||
"sqlparser",
|
||||
]
|
||||
@ -4189,6 +4246,12 @@ version = "1.8.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "4bf2521270932c3c7bed1a59151222bd7643c79310f2916f01925e1e16255698"
|
||||
|
||||
[[package]]
|
||||
name = "rle-decode-fast"
|
||||
version = "1.0.3"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "3582f63211428f83597b51b2ddb88e2a91a9d52d12831f9d08f5e624e8977422"
|
||||
|
||||
[[package]]
|
||||
name = "rmp"
|
||||
version = "0.8.11"
|
||||
|
||||
@ -24,6 +24,7 @@ indexmap = { version = "2.0" }
|
||||
num = { version = "0.4", optional = true }
|
||||
serde = { version = "1.0", features = ["derive"] }
|
||||
sqlparser = { version = "0.34", features = ["serde"], optional = true }
|
||||
polars-io = { version = "0.30.0", features = ["avro"] }
|
||||
|
||||
[dependencies.polars]
|
||||
features = [
|
||||
@ -50,7 +51,7 @@ features = [
|
||||
"serde",
|
||||
"serde-lazy",
|
||||
"strings",
|
||||
"to_dummies",
|
||||
"to_dummies"
|
||||
]
|
||||
optional = true
|
||||
version = "0.30.0"
|
||||
|
||||
@ -22,6 +22,7 @@ mod sql_expr;
|
||||
mod summary;
|
||||
mod take;
|
||||
mod to_arrow;
|
||||
mod to_avro;
|
||||
mod to_csv;
|
||||
mod to_df;
|
||||
mod to_json_lines;
|
||||
@ -55,6 +56,7 @@ pub use sql_expr::parse_sql_expr;
|
||||
pub use summary::Summary;
|
||||
pub use take::TakeDF;
|
||||
pub use to_arrow::ToArrow;
|
||||
pub use to_avro::ToAvro;
|
||||
pub use to_csv::ToCSV;
|
||||
pub use to_df::ToDataFrame;
|
||||
pub use to_json_lines::ToJsonLines;
|
||||
@ -96,6 +98,7 @@ pub fn add_eager_decls(working_set: &mut StateWorkingSet) {
|
||||
SliceDF,
|
||||
TakeDF,
|
||||
ToArrow,
|
||||
ToAvro,
|
||||
ToCSV,
|
||||
ToDataFrame,
|
||||
ToNu,
|
||||
|
||||
@ -13,6 +13,8 @@ use polars::prelude::{
|
||||
LazyFrame, ParallelStrategy, ParquetReader, ScanArgsIpc, ScanArgsParquet, SerReader,
|
||||
};
|
||||
|
||||
use polars_io::avro::AvroReader;
|
||||
|
||||
#[derive(Clone)]
|
||||
pub struct OpenDataFrame;
|
||||
|
||||
@ -22,7 +24,7 @@ impl Command for OpenDataFrame {
|
||||
}
|
||||
|
||||
fn usage(&self) -> &str {
|
||||
"Opens CSV, JSON, JSON lines, arrow, or parquet file to create dataframe."
|
||||
"Opens CSV, JSON, JSON lines, arrow, avro, or parquet file to create dataframe."
|
||||
}
|
||||
|
||||
fn signature(&self) -> Signature {
|
||||
@ -36,7 +38,7 @@ impl Command for OpenDataFrame {
|
||||
.named(
|
||||
"type",
|
||||
SyntaxShape::String,
|
||||
"File type: csv, tsv, json, parquet, arrow. If omitted, derive from file extension",
|
||||
"File type: csv, tsv, json, parquet, arrow, avro. If omitted, derive from file extension",
|
||||
Some('t'),
|
||||
)
|
||||
.named(
|
||||
@ -118,6 +120,7 @@ fn command(
|
||||
"ipc" | "arrow" => from_ipc(engine_state, stack, call),
|
||||
"json" => from_json(engine_state, stack, call),
|
||||
"jsonl" => from_jsonl(engine_state, stack, call),
|
||||
"avro" => from_avro(engine_state, stack, call),
|
||||
_ => Err(ShellError::FileNotFoundCustom(
|
||||
format!("{msg}. Supported values: csv, tsv, parquet, ipc, arrow, json"),
|
||||
blamed,
|
||||
@ -199,6 +202,46 @@ fn from_parquet(
|
||||
}
|
||||
}
|
||||
|
||||
fn from_avro(
|
||||
engine_state: &EngineState,
|
||||
stack: &mut Stack,
|
||||
call: &Call,
|
||||
) -> Result<Value, ShellError> {
|
||||
let file: Spanned<PathBuf> = call.req(engine_state, stack, 0)?;
|
||||
let columns: Option<Vec<String>> = call.get_flag(engine_state, stack, "columns")?;
|
||||
|
||||
let r = File::open(&file.item).map_err(|e| {
|
||||
ShellError::GenericError(
|
||||
"Error opening file".into(),
|
||||
e.to_string(),
|
||||
Some(file.span),
|
||||
None,
|
||||
Vec::new(),
|
||||
)
|
||||
})?;
|
||||
let reader = AvroReader::new(r);
|
||||
|
||||
let reader = match columns {
|
||||
None => reader,
|
||||
Some(columns) => reader.with_columns(Some(columns)),
|
||||
};
|
||||
|
||||
let df: NuDataFrame = reader
|
||||
.finish()
|
||||
.map_err(|e| {
|
||||
ShellError::GenericError(
|
||||
"Avro reader error".into(),
|
||||
format!("{e:?}"),
|
||||
Some(call.head),
|
||||
None,
|
||||
Vec::new(),
|
||||
)
|
||||
})?
|
||||
.into();
|
||||
|
||||
Ok(df.into_value(call.head))
|
||||
}
|
||||
|
||||
fn from_ipc(
|
||||
engine_state: &EngineState,
|
||||
stack: &mut Stack,
|
||||
|
||||
122
crates/nu-cmd-dataframe/src/dataframe/eager/to_avro.rs
Normal file
122
crates/nu-cmd-dataframe/src/dataframe/eager/to_avro.rs
Normal file
@ -0,0 +1,122 @@
|
||||
use std::{fs::File, path::PathBuf};
|
||||
|
||||
use nu_engine::CallExt;
|
||||
use nu_protocol::{
|
||||
ast::Call,
|
||||
engine::{Command, EngineState, Stack},
|
||||
Category, Example, PipelineData, ShellError, Signature, Spanned, SyntaxShape, Type, Value,
|
||||
};
|
||||
use polars_io::avro::{AvroCompression, AvroWriter};
|
||||
use polars_io::SerWriter;
|
||||
|
||||
use super::super::values::NuDataFrame;
|
||||
|
||||
#[derive(Clone)]
|
||||
pub struct ToAvro;
|
||||
|
||||
impl Command for ToAvro {
|
||||
fn name(&self) -> &str {
|
||||
"dfr to-avro"
|
||||
}
|
||||
|
||||
fn usage(&self) -> &str {
|
||||
"Saves dataframe to avro file."
|
||||
}
|
||||
|
||||
fn signature(&self) -> Signature {
|
||||
Signature::build(self.name())
|
||||
.named(
|
||||
"compression",
|
||||
SyntaxShape::String,
|
||||
"use compression, supports deflate or snappy",
|
||||
Some('c'),
|
||||
)
|
||||
.required("file", SyntaxShape::Filepath, "file path to save dataframe")
|
||||
.input_output_type(Type::Custom("dataframe".into()), Type::Any)
|
||||
.category(Category::Custom("dataframe".into()))
|
||||
}
|
||||
|
||||
fn examples(&self) -> Vec<Example> {
|
||||
vec![Example {
|
||||
description: "Saves dataframe to avro file",
|
||||
example: "[[a b]; [1 2] [3 4]] | dfr into-df | dfr to-avro test.avro",
|
||||
result: None,
|
||||
}]
|
||||
}
|
||||
|
||||
fn run(
|
||||
&self,
|
||||
engine_state: &EngineState,
|
||||
stack: &mut Stack,
|
||||
call: &Call,
|
||||
input: PipelineData,
|
||||
) -> Result<PipelineData, ShellError> {
|
||||
command(engine_state, stack, call, input)
|
||||
}
|
||||
}
|
||||
|
||||
fn get_compression(call: &Call) -> Result<Option<AvroCompression>, ShellError> {
|
||||
if let Some((compression, span)) = call
|
||||
.get_flag_expr("compression")
|
||||
.and_then(|e| e.as_string().map(|s| (s, e.span)))
|
||||
{
|
||||
match compression.as_ref() {
|
||||
"snappy" => Ok(Some(AvroCompression::Snappy)),
|
||||
"deflate" => Ok(Some(AvroCompression::Deflate)),
|
||||
_ => Err(ShellError::IncorrectValue {
|
||||
msg: "compression must be one of deflate or snappy".to_string(),
|
||||
span,
|
||||
}),
|
||||
}
|
||||
} else {
|
||||
Ok(None)
|
||||
}
|
||||
}
|
||||
|
||||
fn command(
|
||||
engine_state: &EngineState,
|
||||
stack: &mut Stack,
|
||||
call: &Call,
|
||||
input: PipelineData,
|
||||
) -> Result<PipelineData, ShellError> {
|
||||
let file_name: Spanned<PathBuf> = call.req(engine_state, stack, 0)?;
|
||||
let compression = get_compression(call)?;
|
||||
|
||||
let mut df = NuDataFrame::try_from_pipeline(input, call.head)?;
|
||||
|
||||
let file = File::create(&file_name.item).map_err(|e| {
|
||||
ShellError::GenericError(
|
||||
"Error with file name".into(),
|
||||
e.to_string(),
|
||||
Some(file_name.span),
|
||||
None,
|
||||
Vec::new(),
|
||||
)
|
||||
})?;
|
||||
|
||||
AvroWriter::new(file)
|
||||
.with_compression(compression)
|
||||
.finish(df.as_mut())
|
||||
.map_err(|e| {
|
||||
ShellError::GenericError(
|
||||
"Error saving file".into(),
|
||||
e.to_string(),
|
||||
Some(file_name.span),
|
||||
None,
|
||||
Vec::new(),
|
||||
)
|
||||
})?;
|
||||
|
||||
let file_value = Value::String {
|
||||
val: format!("saved {:?}", &file_name.item),
|
||||
span: file_name.span,
|
||||
};
|
||||
|
||||
Ok(PipelineData::Value(
|
||||
Value::List {
|
||||
vals: vec![file_value],
|
||||
span: call.head,
|
||||
},
|
||||
None,
|
||||
))
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user