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Extract the geo fields DelAdd and generate a new DelAdd obkv with it

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Clément Renault 2023-10-19 15:55:48 +02:00 committed by Louis Dureuil
parent ba90a5ec0e
commit a3dae4db9b
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1 changed files with 58 additions and 23 deletions
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81
milli/src/update/index_documents/extract/extract_geo_points.rs
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@ -6,6 +6,7 @@ use serde_json::Value;
use super::helpers::{create_writer, writer_into_reader, GrenadParameters};
use crate::error::GeoError;
use crate::update::del_add::{DelAdd, KvReaderDelAdd, KvWriterDelAdd};
use crate::update::index_documents::extract_finite_float_from_value;
use crate::{FieldId, InternalError, Result};
@ -14,6 +15,7 @@ use crate::{FieldId, InternalError, Result};
/// Returns the generated grenad reader containing the docid as key associated to the (latitude, longitude)
#[logging_timer::time]
pub fn extract_geo_points<R: io::Read + io::Seek>(
// TODO grenad::Reader<Obkv<FieldId, Obkv<DelAdd, JsonValue>>>
obkv_documents: grenad::Reader<R>,
indexer: GrenadParameters,
primary_key_id: FieldId,
@ -30,39 +32,72 @@ pub fn extract_geo_points<R: io::Read + io::Seek>(
let mut cursor = obkv_documents.into_cursor()?;
while let Some((docid_bytes, value)) = cursor.move_on_next()? {
let obkv = obkv::KvReader::new(value);
// since we only needs the primary key when we throw an error we create this getter to
// lazily get it when needed
// since we only need the primary key when we throw an error
// we create this getter to lazily get it when needed
let document_id = || -> Value {
let document_id = obkv.get(primary_key_id).unwrap();
serde_json::from_slice(document_id).unwrap()
};
// HELP we will receive two DelAdds here, one for the lat and one for the lng
// what happens if there is a missing Del or Add for one of them?
// first we get the two fields
let lat = obkv.get(lat_fid);
let lng = obkv.get(lng_fid);
match (obkv.get(lat_fid), obkv.get(lng_fid)) {
(Some(lat), Some(lng)) => {
let deladd_lat_obkv = KvReaderDelAdd::new(lat);
let deladd_lng_obkv = KvReaderDelAdd::new(lng);
if let Some((lat, lng)) = lat.zip(lng) {
// then we extract the values
let lat = extract_finite_float_from_value(
serde_json::from_slice(lat).map_err(InternalError::SerdeJson)?,
)
.map_err(|lat| GeoError::BadLatitude { document_id: document_id(), value: lat })?;
// then we extract the values
let del_lat_lng = deladd_lat_obkv
.get(DelAdd::Deletion)
.zip(deladd_lng_obkv.get(DelAdd::Deletion))
.map(|(lat, lng)| extract_lat_lng(lat, lng, document_id))
.transpose()?;
let add_lat_lng = deladd_lat_obkv
.get(DelAdd::Addition)
.zip(deladd_lng_obkv.get(DelAdd::Addition))
.map(|(lat, lng)| extract_lat_lng(lat, lng, document_id))
.transpose()?;
let lng = extract_finite_float_from_value(
serde_json::from_slice(lng).map_err(InternalError::SerdeJson)?,
)
.map_err(|lng| GeoError::BadLongitude { document_id: document_id(), value: lng })?;
#[allow(clippy::drop_non_drop)]
let bytes: [u8; 16] = concat_arrays![lat.to_ne_bytes(), lng.to_ne_bytes()];
writer.insert(docid_bytes, bytes)?;
} else if lat.is_none() && lng.is_some() {
return Err(GeoError::MissingLatitude { document_id: document_id() })?;
} else if lat.is_some() && lng.is_none() {
return Err(GeoError::MissingLongitude { document_id: document_id() })?;
let mut obkv = KvWriterDelAdd::memory();
if let Some([lat, lng]) = del_lat_lng {
#[allow(clippy::drop_non_drop)]
let bytes: [u8; 16] = concat_arrays![lat.to_ne_bytes(), lng.to_ne_bytes()];
obkv.insert(DelAdd::Deletion, bytes)?;
}
if let Some([lat, lng]) = add_lat_lng {
#[allow(clippy::drop_non_drop)]
let bytes: [u8; 16] = concat_arrays![lat.to_ne_bytes(), lng.to_ne_bytes()];
obkv.insert(DelAdd::Addition, bytes)?;
}
let bytes = obkv.into_inner()?;
writer.insert(docid_bytes, bytes)?;
}
(None, Some(_)) => {
return Err(GeoError::MissingLatitude { document_id: document_id() }.into())
}
(Some(_), None) => {
return Err(GeoError::MissingLongitude { document_id: document_id() }.into())
}
(None, None) => (),
}
// else => the _geo object was `null`, there is nothing to do
}
writer_into_reader(writer)
}
/// Extract the finite floats lat and lng from two bytes slices.
fn extract_lat_lng(lat: &[u8], lng: &[u8], document_id: impl Fn() -> Value) -> Result<[f64; 2]> {
let lat = extract_finite_float_from_value(
serde_json::from_slice(lat).map_err(InternalError::SerdeJson)?,
)
.map_err(|lat| GeoError::BadLatitude { document_id: document_id(), value: lat })?;
let lng = extract_finite_float_from_value(
serde_json::from_slice(lng).map_err(InternalError::SerdeJson)?,
)
.map_err(|lng| GeoError::BadLongitude { document_id: document_id(), value: lng })?;
Ok([lat, lng])
}