Files
daqbuffer/crates/streams/src/generators.rs
2023-12-18 15:53:33 +01:00

423 lines
14 KiB
Rust

use crate::frames::inmem::BoxedBytesStream;
use crate::transform::build_event_transform;
use err::Error;
use futures_util::Future;
use futures_util::FutureExt;
use futures_util::Stream;
use futures_util::StreamExt;
use items_0::container::ByteEstimate;
use items_0::on_sitemty_data;
use items_0::streamitem::sitem_data;
use items_0::streamitem::RangeCompletableItem;
use items_0::streamitem::Sitemty;
use items_0::streamitem::StreamItem;
use items_0::Appendable;
use items_0::Empty;
use items_0::WithLen;
use items_2::channelevents::ChannelEvents;
use items_2::empty::empty_events_dyn_ev;
use items_2::eventsdim0::EventsDim0;
use items_2::eventsdim1::EventsDim1;
use items_2::framable::Framable;
use netpod::log::*;
use netpod::range::evrange::SeriesRange;
use netpod::timeunits::DAY;
use netpod::timeunits::MS;
use query::api4::events::EventsSubQuery;
use std::f64::consts::PI;
use std::pin::Pin;
use std::task::Context;
use std::task::Poll;
use std::time::Duration;
pub fn make_test_channel_events_bytes_stream(
subq: EventsSubQuery,
node_count: u64,
node_ix: u64,
) -> Result<BoxedBytesStream, Error> {
if subq.is_event_blobs() {
let e = Error::with_msg_no_trace("evq.is_event_blobs() not supported in this generator");
error!("{e}");
Err(e)
} else {
let mut tr = build_event_transform(subq.transform())?;
let stream = make_test_channel_events_stream_data(subq, node_count, node_ix)?;
let stream = stream.map(move |x| {
on_sitemty_data!(x, |x: ChannelEvents| {
match x {
ChannelEvents::Events(evs) => {
let evs = tr.0.transform(evs);
Ok(StreamItem::DataItem(RangeCompletableItem::Data(ChannelEvents::Events(
evs,
))))
}
ChannelEvents::Status(x) => Ok(StreamItem::DataItem(RangeCompletableItem::Data(
ChannelEvents::Status(x),
))),
}
})
});
let stream = stream.map(|x| x.make_frame().map(|x| x.freeze()));
let ret = Box::pin(stream);
Ok(ret)
}
}
// is also used from nodenet::conn
pub fn make_test_channel_events_stream_data(
subq: EventsSubQuery,
node_count: u64,
node_ix: u64,
) -> Result<Pin<Box<dyn Stream<Item = Sitemty<ChannelEvents>> + Send>>, Error> {
let empty = empty_events_dyn_ev(subq.ch_conf().scalar_type(), subq.ch_conf().shape())?;
let empty = sitem_data(ChannelEvents::Events(empty));
let stream = make_test_channel_events_stream_data_inner(subq, node_count, node_ix)?;
let ret = futures_util::stream::iter([empty]).chain(stream);
let ret = Box::pin(ret);
Ok(ret)
}
fn make_test_channel_events_stream_data_inner(
subq: EventsSubQuery,
node_count: u64,
node_ix: u64,
) -> Result<Pin<Box<dyn Stream<Item = Sitemty<ChannelEvents>> + Send>>, Error> {
debug!("use test backend data");
let chn = subq.name();
let range = subq.range().clone();
let one_before = subq.transform().need_one_before_range();
if chn == "test-gen-i32-dim0-v00" {
Ok(Box::pin(GenerateI32V00::new(node_ix, node_count, range, one_before)))
} else if chn == "test-gen-i32-dim0-v01" {
Ok(Box::pin(GenerateI32V01::new(node_ix, node_count, range, one_before)))
} else if chn == "test-gen-f64-dim1-v00" {
Ok(Box::pin(GenerateF64V00::new(node_ix, node_count, range, one_before)))
} else {
let na: Vec<_> = chn.split("-").collect();
if na.len() != 3 {
Err(Error::with_msg_no_trace(format!(
"make_channel_events_stream_data can not understand test channel name: {chn:?}"
)))
} else {
if na[0] != "inmem" {
Err(Error::with_msg_no_trace(format!(
"make_channel_events_stream_data can not understand test channel name: {chn:?}"
)))
} else {
let _range = subq.range().clone();
if na[1] == "d0" {
if na[2] == "i32" {
//generator::generate_i32(node_ix, node_count, range)
panic!()
} else if na[2] == "f32" {
//generator::generate_f32(node_ix, node_count, range)
panic!()
} else {
Err(Error::with_msg_no_trace(format!(
"make_channel_events_stream_data can not understand test channel name: {chn:?}"
)))
}
} else {
Err(Error::with_msg_no_trace(format!(
"make_channel_events_stream_data can not understand test channel name: {chn:?}"
)))
}
}
}
}
}
pub struct GenerateI32V00 {
ts: u64,
dts: u64,
tsend: u64,
#[allow(unused)]
c1: u64,
timeout: Option<Pin<Box<dyn Future<Output = ()> + Send>>>,
do_throttle: bool,
done: bool,
done_range_final: bool,
}
impl GenerateI32V00 {
pub fn new(node_ix: u64, node_count: u64, range: SeriesRange, one_before_range: bool) -> Self {
let range = match range {
SeriesRange::TimeRange(k) => k,
SeriesRange::PulseRange(_) => todo!(),
};
let ivl = MS * 1000;
let dts = ivl * node_count as u64;
let ts = (range.beg / ivl + node_ix - if one_before_range { 1 } else { 0 }) * ivl;
let tsend = range.end;
Self {
ts,
dts,
tsend,
c1: 0,
timeout: None,
do_throttle: false,
done: false,
done_range_final: false,
}
}
fn make_batch(&mut self) -> Sitemty<ChannelEvents> {
type T = i32;
let mut item = EventsDim0::empty();
let mut ts = self.ts;
loop {
if self.ts >= self.tsend || item.byte_estimate() > 100 {
break;
}
let pulse = ts;
let value = (ts / (MS * 100) % 1000) as T;
item.push(ts, pulse, value);
ts += self.dts;
}
self.ts = ts;
let w = ChannelEvents::Events(Box::new(item) as _);
let w = sitem_data(w);
w
}
}
impl Stream for GenerateI32V00 {
type Item = Sitemty<ChannelEvents>;
fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context) -> Poll<Option<Self::Item>> {
use Poll::*;
loop {
break if self.done {
Ready(None)
} else if self.ts >= self.tsend {
self.done = true;
self.done_range_final = true;
Ready(Some(Ok(StreamItem::DataItem(RangeCompletableItem::RangeComplete))))
} else if !self.do_throttle {
// To use the generator without throttling, use this scope
Ready(Some(self.make_batch()))
} else if let Some(fut) = self.timeout.as_mut() {
match fut.poll_unpin(cx) {
Ready(()) => {
self.timeout = None;
Ready(Some(self.make_batch()))
}
Pending => Pending,
}
} else {
self.timeout = Some(Box::pin(tokio::time::sleep(Duration::from_millis(2))));
continue;
};
}
}
}
pub struct GenerateI32V01 {
ivl: u64,
ts: u64,
dts: u64,
tsend: u64,
#[allow(unused)]
c1: u64,
node_ix: u64,
timeout: Option<Pin<Box<dyn Future<Output = ()> + Send>>>,
do_throttle: bool,
have_range_final: bool,
done: bool,
done_range_final: bool,
}
impl GenerateI32V01 {
pub fn new(node_ix: u64, node_count: u64, range: SeriesRange, one_before_range: bool) -> Self {
let range = match range {
SeriesRange::TimeRange(k) => k,
SeriesRange::PulseRange(_) => todo!(),
};
let ivl = MS * 500;
let dts = ivl * node_count as u64;
let ts = (range.beg / ivl + node_ix - if one_before_range { 1 } else { 0 }) * ivl;
let tsend = range.end.min(DAY);
let have_range_final = range.end < (DAY - ivl);
debug!(
"GenerateI32V01::new ivl {} dts {} ts {} one_before_range {}",
ivl, dts, ts, one_before_range
);
Self {
ivl,
ts,
dts,
tsend,
c1: 0,
node_ix,
timeout: None,
do_throttle: false,
have_range_final,
done: false,
done_range_final: false,
}
}
fn make_batch(&mut self) -> Sitemty<ChannelEvents> {
type T = i32;
let mut item = EventsDim0::empty();
let mut ts = self.ts;
loop {
if self.ts >= self.tsend || item.byte_estimate() > 100 {
break;
}
let pulse = ts;
let value = (ts / self.ivl) as T;
if false {
info!(
"v01 node {} made event ts {} pulse {} value {}",
self.node_ix, ts, pulse, value
);
}
item.push(ts, pulse, value);
ts += self.dts;
}
self.ts = ts;
let w = ChannelEvents::Events(Box::new(item) as _);
let w = sitem_data(w);
w
}
}
impl Stream for GenerateI32V01 {
type Item = Sitemty<ChannelEvents>;
fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context) -> Poll<Option<Self::Item>> {
use Poll::*;
loop {
break if self.done {
Ready(None)
} else if self.ts >= self.tsend {
self.done = true;
self.done_range_final = true;
if self.have_range_final {
Ready(Some(Ok(StreamItem::DataItem(RangeCompletableItem::RangeComplete))))
} else {
continue;
}
} else if !self.do_throttle {
// To use the generator without throttling, use this scope
Ready(Some(self.make_batch()))
} else if let Some(fut) = self.timeout.as_mut() {
match fut.poll_unpin(cx) {
Ready(()) => {
self.timeout = None;
Ready(Some(self.make_batch()))
}
Pending => Pending,
}
} else {
self.timeout = Some(Box::pin(tokio::time::sleep(Duration::from_millis(2))));
continue;
};
}
}
}
pub struct GenerateF64V00 {
ivl: u64,
ts: u64,
dts: u64,
tsend: u64,
node_ix: u64,
timeout: Option<Pin<Box<dyn Future<Output = ()> + Send>>>,
do_throttle: bool,
done: bool,
done_range_final: bool,
}
impl GenerateF64V00 {
pub fn new(node_ix: u64, node_count: u64, range: SeriesRange, one_before_range: bool) -> Self {
let range = match range {
SeriesRange::TimeRange(k) => k,
SeriesRange::PulseRange(_) => todo!(),
};
let ivl = MS * 100;
let dts = ivl * node_count as u64;
let ts = (range.beg / ivl + node_ix - if one_before_range { 1 } else { 0 }) * ivl;
let tsend = range.end;
debug!(
"GenerateF64V00::new ivl {} dts {} ts {} one_before_range {}",
ivl, dts, ts, one_before_range
);
Self {
ivl,
ts,
dts,
tsend,
node_ix,
timeout: None,
do_throttle: false,
done: false,
done_range_final: false,
}
}
fn make_batch(&mut self) -> Sitemty<ChannelEvents> {
type T = f64;
let mut item = EventsDim1::empty();
let mut ts = self.ts;
loop {
if self.ts >= self.tsend || item.byte_estimate() > 400 {
break;
}
let pulse = ts;
let ampl = ((ts / self.ivl) as T).sin() + 2.;
let mut value = Vec::new();
let pi = PI;
for i in 0..21 {
let x = ((-pi + (2. * pi / 20.) * i as f64).cos() + 1.1) * ampl;
value.push(x);
}
if false {
info!(
"v01 node {} made event ts {} pulse {} value {:?}",
self.node_ix, ts, pulse, value
);
}
item.push(ts, pulse, value);
ts += self.dts;
}
self.ts = ts;
trace!("generated len {}", item.len());
let w = ChannelEvents::Events(Box::new(item) as _);
let w = sitem_data(w);
w
}
}
impl Stream for GenerateF64V00 {
type Item = Sitemty<ChannelEvents>;
fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context) -> Poll<Option<Self::Item>> {
use Poll::*;
loop {
break if self.done {
Ready(None)
} else if self.ts >= self.tsend {
self.done = true;
self.done_range_final = true;
Ready(Some(Ok(StreamItem::DataItem(RangeCompletableItem::RangeComplete))))
} else if !self.do_throttle {
// To use the generator without throttling, use this scope
Ready(Some(self.make_batch()))
} else if let Some(fut) = self.timeout.as_mut() {
match fut.poll_unpin(cx) {
Ready(()) => {
self.timeout = None;
Ready(Some(self.make_batch()))
}
Pending => Pending,
}
} else {
self.timeout = Some(Box::pin(tokio::time::sleep(Duration::from_millis(2))));
continue;
};
}
}
}