1use std::{collections::HashMap, path::PathBuf};
19
20use databento::dbn;
21use nautilus_core::{
22 ffi::cvec::CVec,
23 python::{IntoPyObjectNautilusExt, to_pyvalue_err},
24};
25use nautilus_model::{
26 data::{Bar, Data, InstrumentStatus, OrderBookDelta, OrderBookDepth10, QuoteTick, TradeTick},
27 identifiers::{InstrumentId, Venue},
28 python::instruments::instrument_any_to_pyobject,
29};
30use pyo3::{
31 prelude::*,
32 types::{PyCapsule, PyList},
33};
34use ustr::Ustr;
35
36use crate::{
37 loader::DatabentoDataLoader,
38 types::{DatabentoImbalance, DatabentoPublisher, DatabentoStatistics, PublisherId},
39};
40
41#[pymethods]
42impl DatabentoDataLoader {
43 #[new]
44 #[pyo3(signature = (publishers_filepath=None))]
45 fn py_new(publishers_filepath: Option<PathBuf>) -> PyResult<Self> {
46 Self::new(publishers_filepath).map_err(to_pyvalue_err)
47 }
48
49 #[pyo3(name = "load_publishers")]
50 fn py_load_publishers(&mut self, publishers_filepath: PathBuf) -> PyResult<()> {
51 self.load_publishers(publishers_filepath)
52 .map_err(to_pyvalue_err)
53 }
54
55 #[must_use]
56 #[pyo3(name = "get_publishers")]
57 fn py_get_publishers(&self) -> HashMap<u16, DatabentoPublisher> {
58 self.get_publishers()
59 .iter()
60 .map(|(&key, value)| (key, value.clone()))
61 .collect::<HashMap<u16, DatabentoPublisher>>()
62 }
63
64 #[pyo3(name = "set_dataset_for_venue")]
65 fn py_set_dataset_for_venue(&mut self, dataset: String, venue: Venue) {
66 self.set_dataset_for_venue(Ustr::from(&dataset), venue);
67 }
68
69 #[must_use]
70 #[pyo3(name = "get_dataset_for_venue")]
71 fn py_get_dataset_for_venue(&self, venue: &Venue) -> Option<String> {
72 self.get_dataset_for_venue(venue).map(ToString::to_string)
73 }
74
75 #[must_use]
76 #[pyo3(name = "get_venue_for_publisher")]
77 fn py_get_venue_for_publisher(&self, publisher_id: PublisherId) -> Option<String> {
78 self.get_venue_for_publisher(publisher_id)
79 .map(ToString::to_string)
80 }
81
82 #[pyo3(name = "schema_for_file")]
83 fn py_schema_for_file(&self, filepath: PathBuf) -> PyResult<Option<String>> {
84 self.schema_from_file(&filepath).map_err(to_pyvalue_err)
85 }
86
87 #[pyo3(name = "load_instruments")]
88 fn py_load_instruments(
89 &mut self,
90 py: Python,
91 filepath: PathBuf,
92 use_exchange_as_venue: bool,
93 ) -> PyResult<PyObject> {
94 let iter = self
95 .load_instruments(&filepath, use_exchange_as_venue)
96 .map_err(to_pyvalue_err)?;
97
98 let mut data = Vec::new();
99 for instrument in iter {
100 let py_object = instrument_any_to_pyobject(py, instrument)?;
101 data.push(py_object);
102 }
103
104 let list = PyList::new(py, &data).expect("Invalid `ExactSizeIterator`");
105
106 Ok(list.into_py_any_unwrap(py))
107 }
108
109 #[pyo3(name = "load_order_book_deltas")]
111 #[pyo3(signature = (filepath, instrument_id=None, price_precision=None))]
112 fn py_load_order_book_deltas(
113 &self,
114 filepath: PathBuf,
115 instrument_id: Option<InstrumentId>,
116 price_precision: Option<u8>,
117 ) -> PyResult<Vec<OrderBookDelta>> {
118 self.load_order_book_deltas(&filepath, instrument_id, price_precision)
119 .map_err(to_pyvalue_err)
120 }
121
122 #[pyo3(name = "load_order_book_deltas_as_pycapsule")]
123 #[pyo3(signature = (filepath, instrument_id=None, price_precision=None, include_trades=None))]
124 fn py_load_order_book_deltas_as_pycapsule(
125 &self,
126 py: Python,
127 filepath: PathBuf,
128 instrument_id: Option<InstrumentId>,
129 price_precision: Option<u8>,
130 include_trades: Option<bool>,
131 ) -> PyResult<PyObject> {
132 let iter = self
133 .read_records::<dbn::MboMsg>(
134 &filepath,
135 instrument_id,
136 price_precision,
137 include_trades.unwrap_or(false),
138 None,
139 )
140 .map_err(to_pyvalue_err)?;
141
142 exhaust_data_iter_to_pycapsule(py, iter).map_err(to_pyvalue_err)
143 }
144
145 #[pyo3(name = "load_order_book_depth10")]
146 #[pyo3(signature = (filepath, instrument_id=None, price_precision=None))]
147 fn py_load_order_book_depth10(
148 &self,
149 filepath: PathBuf,
150 instrument_id: Option<InstrumentId>,
151 price_precision: Option<u8>,
152 ) -> PyResult<Vec<OrderBookDepth10>> {
153 self.load_order_book_depth10(&filepath, instrument_id, price_precision)
154 .map_err(to_pyvalue_err)
155 }
156
157 #[pyo3(name = "load_order_book_depth10_as_pycapsule")]
158 #[pyo3(signature = (filepath, instrument_id=None, price_precision=None))]
159 fn py_load_order_book_depth10_as_pycapsule(
160 &self,
161 py: Python,
162 filepath: PathBuf,
163 instrument_id: Option<InstrumentId>,
164 price_precision: Option<u8>,
165 ) -> PyResult<PyObject> {
166 let iter = self
167 .read_records::<dbn::Mbp10Msg>(&filepath, instrument_id, price_precision, false, None)
168 .map_err(to_pyvalue_err)?;
169
170 exhaust_data_iter_to_pycapsule(py, iter).map_err(to_pyvalue_err)
171 }
172
173 #[pyo3(name = "load_quotes")]
174 #[pyo3(signature = (filepath, instrument_id=None, price_precision=None))]
175 fn py_load_quotes(
176 &self,
177 filepath: PathBuf,
178 instrument_id: Option<InstrumentId>,
179 price_precision: Option<u8>,
180 ) -> PyResult<Vec<QuoteTick>> {
181 self.load_quotes(&filepath, instrument_id, price_precision)
182 .map_err(to_pyvalue_err)
183 }
184
185 #[pyo3(name = "load_quotes_as_pycapsule")]
186 #[pyo3(signature = (filepath, instrument_id=None, price_precision=None, include_trades=None))]
187 fn py_load_quotes_as_pycapsule(
188 &self,
189 py: Python,
190 filepath: PathBuf,
191 instrument_id: Option<InstrumentId>,
192 price_precision: Option<u8>,
193 include_trades: Option<bool>,
194 ) -> PyResult<PyObject> {
195 let iter = self
196 .read_records::<dbn::Mbp1Msg>(
197 &filepath,
198 instrument_id,
199 price_precision,
200 include_trades.unwrap_or(false),
201 None,
202 )
203 .map_err(to_pyvalue_err)?;
204
205 exhaust_data_iter_to_pycapsule(py, iter).map_err(to_pyvalue_err)
206 }
207
208 #[pyo3(name = "load_bbo_quotes")]
209 #[pyo3(signature = (filepath, instrument_id=None, price_precision=None))]
210 fn py_load_bbo_quotes(
211 &self,
212 filepath: PathBuf,
213 instrument_id: Option<InstrumentId>,
214 price_precision: Option<u8>,
215 ) -> PyResult<Vec<QuoteTick>> {
216 self.load_bbo_quotes(&filepath, instrument_id, price_precision)
217 .map_err(to_pyvalue_err)
218 }
219
220 #[pyo3(name = "load_bbo_quotes_as_pycapsule")]
221 #[pyo3(signature = (filepath, instrument_id=None, price_precision=None))]
222 fn py_load_bbo_quotes_as_pycapsule(
223 &self,
224 py: Python,
225 filepath: PathBuf,
226 instrument_id: Option<InstrumentId>,
227 price_precision: Option<u8>,
228 ) -> PyResult<PyObject> {
229 let iter = self
230 .read_records::<dbn::BboMsg>(&filepath, instrument_id, price_precision, false, None)
231 .map_err(to_pyvalue_err)?;
232
233 exhaust_data_iter_to_pycapsule(py, iter).map_err(to_pyvalue_err)
234 }
235
236 #[pyo3(name = "load_tbbo_trades")]
237 #[pyo3(signature = (filepath, instrument_id=None, price_precision=None))]
238 fn py_load_tbbo_trades(
239 &self,
240 filepath: PathBuf,
241 instrument_id: Option<InstrumentId>,
242 price_precision: Option<u8>,
243 ) -> PyResult<Vec<TradeTick>> {
244 self.load_tbbo_trades(&filepath, instrument_id, price_precision)
245 .map_err(to_pyvalue_err)
246 }
247
248 #[pyo3(name = "load_tbbo_trades_as_pycapsule")]
249 #[pyo3(signature = (filepath, instrument_id=None, price_precision=None))]
250 fn py_load_tbbo_trades_as_pycapsule(
251 &self,
252 py: Python,
253 filepath: PathBuf,
254 instrument_id: Option<InstrumentId>,
255 price_precision: Option<u8>,
256 ) -> PyResult<PyObject> {
257 let iter = self
258 .read_records::<dbn::TbboMsg>(&filepath, instrument_id, price_precision, false, None)
259 .map_err(to_pyvalue_err)?;
260
261 exhaust_data_iter_to_pycapsule(py, iter).map_err(to_pyvalue_err)
262 }
263
264 #[pyo3(name = "load_tcbbo_trades")]
265 #[pyo3(signature = (filepath, instrument_id=None, price_precision=None))]
266 fn py_load_tcbbo_trades(
267 &self,
268 filepath: PathBuf,
269 instrument_id: Option<InstrumentId>,
270 price_precision: Option<u8>,
271 ) -> PyResult<Vec<TradeTick>> {
272 self.load_tcbbo_trades(&filepath, instrument_id, price_precision)
273 .map_err(to_pyvalue_err)
274 }
275
276 #[pyo3(name = "load_tcbbo_trades_as_pycapsule")]
277 #[pyo3(signature = (filepath, instrument_id=None, price_precision=None))]
278 fn py_load_tcbbo_trades_as_pycapsule(
279 &self,
280 py: Python,
281 filepath: PathBuf,
282 instrument_id: Option<InstrumentId>,
283 price_precision: Option<u8>,
284 ) -> PyResult<PyObject> {
285 let iter = self
286 .read_records::<dbn::CbboMsg>(&filepath, instrument_id, price_precision, false, None)
287 .map_err(to_pyvalue_err)?;
288
289 exhaust_data_iter_to_pycapsule(py, iter).map_err(to_pyvalue_err)
290 }
291
292 #[pyo3(name = "load_trades")]
293 #[pyo3(signature = (filepath, instrument_id=None, price_precision=None))]
294 fn py_load_trades(
295 &self,
296 filepath: PathBuf,
297 instrument_id: Option<InstrumentId>,
298 price_precision: Option<u8>,
299 ) -> PyResult<Vec<TradeTick>> {
300 self.load_trades(&filepath, instrument_id, price_precision)
301 .map_err(to_pyvalue_err)
302 }
303
304 #[pyo3(name = "load_trades_as_pycapsule")]
305 #[pyo3(signature = (filepath, instrument_id=None, price_precision=None))]
306 fn py_load_trades_as_pycapsule(
307 &self,
308 py: Python,
309 filepath: PathBuf,
310 instrument_id: Option<InstrumentId>,
311 price_precision: Option<u8>,
312 ) -> PyResult<PyObject> {
313 let iter = self
314 .read_records::<dbn::TradeMsg>(&filepath, instrument_id, price_precision, false, None)
315 .map_err(to_pyvalue_err)?;
316
317 exhaust_data_iter_to_pycapsule(py, iter).map_err(to_pyvalue_err)
318 }
319
320 #[pyo3(name = "load_bars")]
321 #[pyo3(signature = (filepath, instrument_id=None, price_precision=None, timestamp_on_close=true))]
322 fn py_load_bars(
323 &self,
324 filepath: PathBuf,
325 instrument_id: Option<InstrumentId>,
326 price_precision: Option<u8>,
327 timestamp_on_close: bool,
328 ) -> PyResult<Vec<Bar>> {
329 self.load_bars(
330 &filepath,
331 instrument_id,
332 price_precision,
333 Some(timestamp_on_close),
334 )
335 .map_err(to_pyvalue_err)
336 }
337
338 #[pyo3(name = "load_bars_as_pycapsule")]
339 #[pyo3(signature = (filepath, instrument_id=None, price_precision=None, timestamp_on_close=true))]
340 fn py_load_bars_as_pycapsule(
341 &self,
342 py: Python,
343 filepath: PathBuf,
344 instrument_id: Option<InstrumentId>,
345 price_precision: Option<u8>,
346 timestamp_on_close: bool,
347 ) -> PyResult<PyObject> {
348 let iter = self
349 .read_records::<dbn::OhlcvMsg>(
350 &filepath,
351 instrument_id,
352 price_precision,
353 false,
354 Some(timestamp_on_close),
355 )
356 .map_err(to_pyvalue_err)?;
357
358 exhaust_data_iter_to_pycapsule(py, iter).map_err(to_pyvalue_err)
359 }
360
361 #[pyo3(name = "load_status")]
362 #[pyo3(signature = (filepath, instrument_id=None))]
363 fn py_load_status(
364 &self,
365 filepath: PathBuf,
366 instrument_id: Option<InstrumentId>,
367 ) -> PyResult<Vec<InstrumentStatus>> {
368 let iter = self
369 .load_status_records::<dbn::StatusMsg>(&filepath, instrument_id)
370 .map_err(to_pyvalue_err)?;
371
372 let mut data = Vec::new();
373 for result in iter {
374 match result {
375 Ok(item) => data.push(item),
376 Err(e) => return Err(to_pyvalue_err(e)),
377 }
378 }
379
380 Ok(data)
381 }
382
383 #[pyo3(name = "load_imbalance")]
384 #[pyo3(signature = (filepath, instrument_id=None, price_precision=None))]
385 fn py_load_imbalance(
386 &self,
387 filepath: PathBuf,
388 instrument_id: Option<InstrumentId>,
389 price_precision: Option<u8>,
390 ) -> PyResult<Vec<DatabentoImbalance>> {
391 let iter = self
392 .read_imbalance_records::<dbn::ImbalanceMsg>(&filepath, instrument_id, price_precision)
393 .map_err(to_pyvalue_err)?;
394
395 let mut data = Vec::new();
396 for result in iter {
397 match result {
398 Ok(item) => data.push(item),
399 Err(e) => return Err(to_pyvalue_err(e)),
400 }
401 }
402
403 Ok(data)
404 }
405
406 #[pyo3(name = "load_statistics")]
407 #[pyo3(signature = (filepath, instrument_id=None, price_precision=None))]
408 fn py_load_statistics(
409 &self,
410 filepath: PathBuf,
411 instrument_id: Option<InstrumentId>,
412 price_precision: Option<u8>,
413 ) -> PyResult<Vec<DatabentoStatistics>> {
414 let iter = self
415 .read_statistics_records::<dbn::StatMsg>(&filepath, instrument_id, price_precision)
416 .map_err(to_pyvalue_err)?;
417
418 let mut data = Vec::new();
419 for result in iter {
420 match result {
421 Ok(item) => data.push(item),
422 Err(e) => return Err(to_pyvalue_err(e)),
423 }
424 }
425
426 Ok(data)
427 }
428}
429
430fn exhaust_data_iter_to_pycapsule(
431 py: Python,
432 iter: impl Iterator<Item = anyhow::Result<(Option<Data>, Option<Data>)>>,
433) -> anyhow::Result<PyObject> {
434 let mut data = Vec::new();
435 for result in iter {
436 match result {
437 Ok((Some(item1), None)) => data.push(item1),
438 Ok((None, Some(item2))) => data.push(item2),
439 Ok((Some(item1), Some(item2))) => {
440 data.push(item1);
441 data.push(item2);
442 }
443 Ok((None, None)) => {
444 continue;
445 }
446 Err(e) => return Err(e),
447 }
448 }
449
450 let cvec: CVec = data.into();
451 let capsule = PyCapsule::new_with_destructor::<CVec, _>(py, cvec, None, |_, _| {})?;
452
453 Ok(capsule.into_py_any_unwrap(py))
456}