Files
daqingest/scywr/src/iteminsertqueue.rs
2024-01-11 08:23:24 +01:00

840 lines
24 KiB
Rust

pub use netpod::CONNECTION_STATUS_DIV;
use crate::insertworker::Ttls;
use crate::session::ScySession;
use crate::store::DataStore;
use err::thiserror;
use err::ThisError;
use futures_util::Future;
use futures_util::FutureExt;
use netpod::timeunits::SEC;
use netpod::ScalarType;
use netpod::Shape;
use scylla::frame::value::Value;
use scylla::frame::value::ValueList;
use scylla::prepared_statement::PreparedStatement;
use scylla::serialize::row::SerializeRow;
use scylla::serialize::value::SerializeCql;
use scylla::transport::errors::DbError;
use scylla::transport::errors::QueryError;
use scylla::QueryResult;
use series::ChannelStatusSeriesId;
use series::SeriesId;
use smallvec::smallvec;
use smallvec::SmallVec;
use stats::InsertWorkerStats;
use std::net::SocketAddrV4;
use std::pin::Pin;
use std::ptr::NonNull;
use std::sync::Arc;
use std::task::Context;
use std::task::Poll;
use std::time::Duration;
use std::time::SystemTime;
use std::time::UNIX_EPOCH;
#[derive(Debug, ThisError)]
pub enum Error {
DbTimeout,
DbOverload,
DbUnavailable,
DbError(#[from] DbError),
QueryError(#[from] QueryError),
GetValHelpTodoWaveform,
GetValHelpInnerTypeMismatch,
}
#[derive(Clone, Debug)]
pub enum ScalarValue {
I8(i8),
I16(i16),
I32(i32),
F32(f32),
F64(f64),
Enum(i16),
String(String),
Bool(bool),
}
#[derive(Clone, Debug)]
pub enum ArrayValue {
I8(Vec<i8>),
I16(Vec<i16>),
I32(Vec<i32>),
F32(Vec<f32>),
F64(Vec<f64>),
Bool(Vec<bool>),
}
#[derive(Clone, Debug)]
pub enum DataValue {
Scalar(ScalarValue),
Array(ArrayValue),
}
pub trait GetValHelp<T> {
type ScalTy: Clone;
fn get(&self) -> Result<&Self::ScalTy, Error>;
}
impl GetValHelp<i8> for DataValue {
type ScalTy = i8;
fn get(&self) -> Result<&Self::ScalTy, Error> {
match self {
DataValue::Scalar(v) => match v {
ScalarValue::I8(v) => Ok(v),
_ => {
//let ty = any::type_name::<Self::ScalTy>();
Err(Error::GetValHelpInnerTypeMismatch)
}
},
_ => Err(Error::GetValHelpTodoWaveform),
}
}
}
impl GetValHelp<i16> for DataValue {
type ScalTy = i16;
fn get(&self) -> Result<&Self::ScalTy, Error> {
match self {
DataValue::Scalar(v) => match v {
ScalarValue::I16(v) => Ok(v),
_ => {
//let ty = any::type_name::<Self::ScalTy>();
Err(Error::GetValHelpInnerTypeMismatch)
}
},
_ => Err(Error::GetValHelpTodoWaveform),
}
}
}
impl GetValHelp<i32> for DataValue {
type ScalTy = i32;
fn get(&self) -> Result<&Self::ScalTy, Error> {
match self {
DataValue::Scalar(v) => match v {
ScalarValue::I32(v) => Ok(v),
_ => {
//let ty = any::type_name::<Self::ScalTy>();
Err(Error::GetValHelpInnerTypeMismatch)
}
},
_ => Err(Error::GetValHelpTodoWaveform),
}
}
}
impl GetValHelp<f32> for DataValue {
type ScalTy = f32;
fn get(&self) -> Result<&Self::ScalTy, Error> {
match self {
DataValue::Scalar(v) => match v {
ScalarValue::F32(v) => Ok(v),
_ => {
//let ty = any::type_name::<Self::ScalTy>();
Err(Error::GetValHelpInnerTypeMismatch)
}
},
_ => Err(Error::GetValHelpTodoWaveform),
}
}
}
impl GetValHelp<f64> for DataValue {
type ScalTy = f64;
fn get(&self) -> Result<&Self::ScalTy, Error> {
match self {
DataValue::Scalar(v) => match v {
ScalarValue::F64(v) => Ok(v),
_ => {
//let ty = any::type_name::<Self::ScalTy>();
Err(Error::GetValHelpInnerTypeMismatch)
}
},
_ => Err(Error::GetValHelpTodoWaveform),
}
}
}
#[derive(Debug)]
pub enum ConnectionStatus {
ConnectError,
ConnectTimeout,
Established,
Closing,
ClosedUnexpected,
ConnectionHandlerDone,
}
impl ConnectionStatus {
pub fn to_kind(&self) -> u32 {
use ConnectionStatus::*;
match self {
ConnectError => 1,
ConnectTimeout => 2,
Established => 3,
Closing => 4,
ClosedUnexpected => 5,
ConnectionHandlerDone => 6,
}
}
pub fn from_kind(kind: u32) -> Result<Self, err::Error> {
use ConnectionStatus::*;
let ret = match kind {
1 => ConnectError,
2 => ConnectTimeout,
3 => Established,
4 => Closing,
5 => ClosedUnexpected,
6 => ConnectionHandlerDone,
_ => {
return Err(err::Error::with_msg_no_trace(format!(
"unknown ConnectionStatus kind {kind}"
)));
}
};
Ok(ret)
}
}
#[derive(Debug)]
pub struct ConnectionStatusItem {
pub ts: SystemTime,
pub addr: SocketAddrV4,
pub status: ConnectionStatus,
}
#[derive(Debug, Clone)]
pub enum ChannelStatusClosedReason {
ShutdownCommand,
ChannelRemove,
ProtocolError,
FrequencyQuota,
BandwidthQuota,
InternalError,
IocTimeout,
NoProtocol,
ProtocolDone,
ConnectFail,
}
#[derive(Debug)]
pub enum ChannelStatus {
AssignedToAddress,
Opened,
Closed(ChannelStatusClosedReason),
}
impl ChannelStatus {
pub fn to_kind(&self) -> u32 {
use ChannelStatus::*;
use ChannelStatusClosedReason::*;
match self {
AssignedToAddress => 24,
Opened => 1,
Closed(x) => match x {
ShutdownCommand => 2,
ChannelRemove => 3,
ProtocolError => 4,
FrequencyQuota => 5,
BandwidthQuota => 6,
InternalError => 7,
IocTimeout => 8,
NoProtocol => 9,
ProtocolDone => 10,
ConnectFail => 11,
},
}
}
pub fn from_kind(kind: u32) -> Result<Self, err::Error> {
use ChannelStatus::*;
use ChannelStatusClosedReason::*;
let ret = match kind {
1 => Opened,
2 => Closed(ShutdownCommand),
3 => Closed(ChannelRemove),
4 => Closed(ProtocolError),
5 => Closed(FrequencyQuota),
6 => Closed(BandwidthQuota),
7 => Closed(InternalError),
8 => Closed(IocTimeout),
9 => Closed(NoProtocol),
10 => Closed(ProtocolDone),
11 => Closed(ConnectFail),
24 => AssignedToAddress,
_ => {
return Err(err::Error::with_msg_no_trace(format!(
"unknown ChannelStatus kind {kind}"
)));
}
};
Ok(ret)
}
}
#[derive(Debug)]
pub struct ChannelStatusItem {
pub ts: SystemTime,
pub cssid: ChannelStatusSeriesId,
pub status: ChannelStatus,
}
impl ChannelStatusItem {
pub fn new_closed_conn_timeout(ts: SystemTime, cssid: ChannelStatusSeriesId) -> Self {
Self {
ts,
cssid,
status: ChannelStatus::Closed(ChannelStatusClosedReason::IocTimeout),
}
}
}
#[derive(Debug)]
pub struct InsertItem {
pub series: SeriesId,
pub ts_msp: u64,
pub ts_lsp: u64,
pub msp_bump: bool,
pub ts_msp_grid: Option<u32>,
pub pulse: u64,
pub scalar_type: ScalarType,
pub shape: Shape,
pub val: DataValue,
pub ts_local: u64,
}
#[derive(Debug)]
pub struct MuteItem {
pub series: SeriesId,
pub ts: u64,
pub ema: f32,
pub emd: f32,
}
#[derive(Debug)]
pub struct IvlItem {
pub series: SeriesId,
pub ts: u64,
pub ema: f32,
pub emd: f32,
}
#[derive(Debug)]
pub struct ChannelInfoItem {
pub ts_msp: u32,
pub series: SeriesId,
pub ivl: f32,
pub interest: f32,
pub evsize: u32,
}
#[derive(Debug)]
pub struct TimeBinPatchSimpleF32 {
pub series: SeriesId,
pub bin_len_sec: u32,
pub bin_count: u32,
pub off_msp: u32,
pub off_lsp: u32,
pub counts: Vec<i64>,
pub mins: Vec<f32>,
pub maxs: Vec<f32>,
pub avgs: Vec<f32>,
}
#[derive(Debug)]
pub enum QueryItem {
ConnectionStatus(ConnectionStatusItem),
ChannelStatus(ChannelStatusItem),
Insert(InsertItem),
Mute(MuteItem),
Ivl(IvlItem),
ChannelInfo(ChannelInfoItem),
TimeBinPatchSimpleF32(TimeBinPatchSimpleF32),
}
struct InsParCom {
series: u64,
ts_msp: u64,
ts_lsp: u64,
ts_local: u64,
pulse: u64,
ttl: u32,
do_insert: bool,
stats: Arc<InsertWorkerStats>,
}
fn insert_scalar_gen_fut<ST>(par: InsParCom, val: ST, qu: Arc<PreparedStatement>, scy: Arc<ScySession>) -> InsertFut
where
ST: Value + SerializeCql + Send + 'static,
{
let params = (
par.series as i64,
par.ts_msp as i64,
par.ts_lsp as i64,
par.pulse as i64,
val,
par.ttl as i32,
);
InsertFut::new(scy, qu, params, par.ts_local, par.stats)
}
fn insert_array_gen_fut<ST>(par: InsParCom, val: ST, qu: Arc<PreparedStatement>, scy: Arc<ScySession>) -> InsertFut
where
ST: Value + SerializeCql + Send + 'static,
{
let params = (
par.series as i64,
par.ts_msp as i64,
par.ts_lsp as i64,
par.pulse as i64,
val,
par.ttl as i32,
);
InsertFut::new(scy, qu, params, par.ts_local, par.stats)
}
#[pin_project::pin_project]
pub struct InsertFut {
#[allow(unused)]
scy: Arc<ScySession>,
#[allow(unused)]
qu: Arc<PreparedStatement>,
fut: Pin<Box<dyn Future<Output = Result<QueryResult, QueryError>> + Send>>,
// #[pin]
// fut: StackFuture<'static, Result<QueryResult, QueryError>, { 1024 * 3 }>,
}
impl InsertFut {
pub fn new<V: ValueList + SerializeRow + Send + 'static>(
scy: Arc<ScySession>,
qu: Arc<PreparedStatement>,
params: V,
// timestamp when we first encountered the data to-be inserted, for metrics
tsnet: u64,
stats: Arc<InsertWorkerStats>,
) -> Self {
let scy_ref = unsafe { NonNull::from(scy.as_ref()).as_ref() };
let qu_ref = unsafe { NonNull::from(qu.as_ref()).as_ref() };
let fut = scy_ref.execute_paged(qu_ref, params, None);
let fut = fut.map(move |x| {
let item_ts_local = tsnet;
let tsnow_u64 = {
let ts = SystemTime::now();
let epoch = ts.duration_since(std::time::UNIX_EPOCH).unwrap();
epoch.as_secs() * SEC + epoch.subsec_nanos() as u64
};
let dt = ((tsnow_u64 / 1000000) as u32).saturating_sub((item_ts_local / 1000000) as u32);
stats.item_lat_net_store().ingest(dt);
x
});
let fut = taskrun::tokio::task::unconstrained(fut);
let fut = Box::pin(fut);
// let fut = StackFuture::from(fut);
Self { scy, qu, fut }
}
}
impl Future for InsertFut {
type Output = Result<QueryResult, QueryError>;
fn poll(self: Pin<&mut Self>, cx: &mut Context) -> Poll<Self::Output> {
let this = self.project();
this.fut.poll_unpin(cx)
}
}
async fn insert_scalar_gen<ST>(
par: InsParCom,
val: ST,
qu: &PreparedStatement,
data_store: &DataStore,
) -> Result<(), Error>
where
ST: Value + SerializeCql,
{
let params = (
par.series as i64,
par.ts_msp as i64,
par.ts_lsp as i64,
par.pulse as i64,
val,
par.ttl as i32,
);
if par.do_insert {
let y = data_store.scy.execute(qu, params).await;
match y {
Ok(_) => Ok(()),
Err(e) => match e {
QueryError::TimeoutError => Err(Error::DbTimeout),
// TODO use `msg`
QueryError::DbError(e, _msg) => match e {
DbError::Overloaded => Err(Error::DbOverload),
_ => Err(e.into()),
},
_ => Err(e.into()),
},
}
} else {
Ok(())
}
}
async fn insert_array_gen<ST>(
par: InsParCom,
val: Vec<ST>,
qu: &PreparedStatement,
data_store: &DataStore,
) -> Result<(), Error>
where
ST: Value + SerializeCql,
{
if par.do_insert {
let params = (
par.series as i64,
par.ts_msp as i64,
par.ts_lsp as i64,
par.pulse as i64,
val,
par.ttl as i32,
);
let y = data_store.scy.execute(qu, params).await;
match y {
Ok(_) => Ok(()),
Err(e) => match e {
QueryError::TimeoutError => Err(Error::DbTimeout),
// TODO use `msg`
QueryError::DbError(e, _msg) => match e {
DbError::Overloaded => Err(Error::DbOverload),
_ => Err(e.into()),
},
_ => Err(e.into()),
},
}
} else {
Ok(())
}
}
pub async fn insert_item(
item: InsertItem,
ttls: &Ttls,
data_store: &DataStore,
do_insert: bool,
stats: &Arc<InsertWorkerStats>,
) -> Result<(), Error> {
if item.msp_bump {
let params = (item.series.id() as i64, item.ts_msp as i64, ttls.index.as_secs() as i32);
data_store.scy.execute(&data_store.qu_insert_ts_msp, params).await?;
stats.inserts_msp().inc();
}
if let Some(ts_msp_grid) = item.ts_msp_grid {
let params = (
(item.series.id() as i32) & 0xff,
ts_msp_grid as i32,
if item.shape.to_scylla_vec().is_empty() { 0 } else { 1 } as i32,
item.scalar_type.to_scylla_i32(),
item.series.id() as i64,
ttls.index.as_secs() as i32,
);
data_store
.scy
.execute(&data_store.qu_insert_series_by_ts_msp, params)
.await?;
stats.inserts_msp_grid().inc();
}
use DataValue::*;
match item.val {
Scalar(val) => {
let par = InsParCom {
series: item.series.id(),
ts_msp: item.ts_msp,
ts_lsp: item.ts_lsp,
ts_local: item.ts_local,
pulse: item.pulse,
ttl: ttls.d0.as_secs() as _,
do_insert,
stats: stats.clone(),
};
use ScalarValue::*;
match val {
I8(val) => insert_scalar_gen(par, val, &data_store.qu_insert_scalar_i8, &data_store).await?,
I16(val) => insert_scalar_gen(par, val, &data_store.qu_insert_scalar_i16, &data_store).await?,
Enum(val) => insert_scalar_gen(par, val, &data_store.qu_insert_scalar_i16, &data_store).await?,
I32(val) => insert_scalar_gen(par, val, &data_store.qu_insert_scalar_i32, &data_store).await?,
F32(val) => insert_scalar_gen(par, val, &data_store.qu_insert_scalar_f32, &data_store).await?,
F64(val) => insert_scalar_gen(par, val, &data_store.qu_insert_scalar_f64, &data_store).await?,
String(val) => insert_scalar_gen(par, val, &data_store.qu_insert_scalar_string, &data_store).await?,
Bool(val) => insert_scalar_gen(par, val, &data_store.qu_insert_scalar_bool, &data_store).await?,
}
}
Array(val) => {
let par = InsParCom {
series: item.series.id(),
ts_msp: item.ts_msp,
ts_lsp: item.ts_lsp,
ts_local: item.ts_local,
pulse: item.pulse,
ttl: ttls.d1.as_secs() as _,
do_insert,
stats: stats.clone(),
};
use ArrayValue::*;
match val {
I8(val) => insert_array_gen(par, val, &data_store.qu_insert_array_i8, &data_store).await?,
I16(val) => insert_array_gen(par, val, &data_store.qu_insert_array_i16, &data_store).await?,
I32(val) => insert_array_gen(par, val, &data_store.qu_insert_array_i32, &data_store).await?,
F32(val) => insert_array_gen(par, val, &data_store.qu_insert_array_f32, &data_store).await?,
F64(val) => insert_array_gen(par, val, &data_store.qu_insert_array_f64, &data_store).await?,
Bool(val) => insert_array_gen(par, val, &data_store.qu_insert_array_bool, &data_store).await?,
}
}
}
stats.inserts_value().inc();
Ok(())
}
pub fn insert_msp_fut(
series: SeriesId,
ts_msp: u64,
// for stats, the timestamp when we received that data
tsnet: u64,
ttls: &Ttls,
scy: Arc<ScySession>,
qu: Arc<PreparedStatement>,
stats: Arc<InsertWorkerStats>,
) -> InsertFut {
let params = (series.id() as i64, ts_msp as i64, ttls.index.as_secs() as i32);
InsertFut::new(scy, qu, params, tsnet, stats)
}
pub fn insert_item_fut(
item: InsertItem,
ttls: &Ttls,
data_store: &DataStore,
do_insert: bool,
stats: &Arc<InsertWorkerStats>,
) -> InsertFut {
let scy = data_store.scy.clone();
use DataValue::*;
match item.val {
Scalar(val) => {
let par = InsParCom {
series: item.series.id(),
ts_msp: item.ts_msp,
ts_lsp: item.ts_lsp,
ts_local: item.ts_local,
pulse: item.pulse,
ttl: ttls.d0.as_secs() as _,
do_insert,
stats: stats.clone(),
};
use ScalarValue::*;
match val {
I8(val) => insert_scalar_gen_fut(par, val, data_store.qu_insert_scalar_i8.clone(), scy),
I16(val) => insert_scalar_gen_fut(par, val, data_store.qu_insert_scalar_i16.clone(), scy),
Enum(val) => insert_scalar_gen_fut(par, val, data_store.qu_insert_scalar_i16.clone(), scy),
I32(val) => insert_scalar_gen_fut(par, val, data_store.qu_insert_scalar_i32.clone(), scy),
F32(val) => insert_scalar_gen_fut(par, val, data_store.qu_insert_scalar_f32.clone(), scy),
F64(val) => insert_scalar_gen_fut(par, val, data_store.qu_insert_scalar_f64.clone(), scy),
String(val) => insert_scalar_gen_fut(par, val, data_store.qu_insert_scalar_string.clone(), scy),
Bool(val) => insert_scalar_gen_fut(par, val, data_store.qu_insert_scalar_bool.clone(), scy),
}
}
Array(val) => {
let par = InsParCom {
series: item.series.id(),
ts_msp: item.ts_msp,
ts_lsp: item.ts_lsp,
ts_local: item.ts_local,
pulse: item.pulse,
ttl: ttls.d1.as_secs() as _,
do_insert,
stats: stats.clone(),
};
use ArrayValue::*;
match val {
I8(val) => insert_array_gen_fut(par, val, data_store.qu_insert_array_i8.clone(), scy),
I16(val) => insert_array_gen_fut(par, val, data_store.qu_insert_array_i16.clone(), scy),
I32(val) => insert_array_gen_fut(par, val, data_store.qu_insert_array_i32.clone(), scy),
F32(val) => insert_array_gen_fut(par, val, data_store.qu_insert_array_f32.clone(), scy),
F64(val) => insert_array_gen_fut(par, val, data_store.qu_insert_array_f64.clone(), scy),
Bool(val) => insert_array_gen_fut(par, val, data_store.qu_insert_array_bool.clone(), scy),
}
}
}
}
pub fn insert_connection_status_fut(
item: ConnectionStatusItem,
ttls: &Ttls,
data_store: &DataStore,
stats: Arc<InsertWorkerStats>,
) -> InsertFut {
let tsunix = item.ts.duration_since(UNIX_EPOCH).unwrap_or(Duration::ZERO);
let secs = tsunix.as_secs() * SEC;
let nanos = tsunix.subsec_nanos() as u64;
let ts = secs + nanos;
let ts_msp = ts / CONNECTION_STATUS_DIV * CONNECTION_STATUS_DIV;
let ts_lsp = ts - ts_msp;
// TODO is that the good tsnet to use?
let tsnet = ts;
let kind = item.status.to_kind();
let addr = format!("{}", item.addr);
let params = (
ts_msp as i64,
ts_lsp as i64,
kind as i32,
addr,
ttls.index.as_secs() as i32,
);
InsertFut::new(
data_store.scy.clone(),
data_store.qu_insert_connection_status.clone(),
params,
tsnet,
stats,
)
}
pub fn insert_channel_status_fut(
item: ChannelStatusItem,
ttls: &Ttls,
data_store: &DataStore,
stats: Arc<InsertWorkerStats>,
) -> SmallVec<[InsertFut; 4]> {
let tsunix = item.ts.duration_since(UNIX_EPOCH).unwrap_or(Duration::ZERO);
let secs = tsunix.as_secs() * SEC;
let nanos = tsunix.subsec_nanos() as u64;
let ts = secs + nanos;
let ts_msp = ts / CONNECTION_STATUS_DIV * CONNECTION_STATUS_DIV;
let ts_lsp = ts - ts_msp;
let tsnet = ts;
let kind = item.status.to_kind();
let cssid = item.cssid.id();
let params = (
cssid as i64,
ts_msp as i64,
ts_lsp as i64,
kind as i32,
ttls.index.as_secs() as i32,
);
let fut1 = InsertFut::new(
data_store.scy.clone(),
data_store.qu_insert_channel_status.clone(),
params,
tsnet,
stats.clone(),
);
let params = (
ts_msp as i64,
ts_lsp as i64,
cssid as i64,
kind as i32,
ttls.index.as_secs() as i32,
);
let fut2 = InsertFut::new(
data_store.scy.clone(),
data_store.qu_insert_channel_status_by_ts_msp.clone(),
params,
tsnet,
stats,
);
smallvec![fut1, fut2]
}
pub async fn insert_connection_status(
item: ConnectionStatusItem,
ttl: Duration,
data_store: &DataStore,
) -> Result<(), Error> {
let tsunix = item.ts.duration_since(UNIX_EPOCH).unwrap_or(Duration::ZERO);
let secs = tsunix.as_secs() * SEC;
let nanos = tsunix.subsec_nanos() as u64;
let ts = secs + nanos;
let ts_msp = ts / CONNECTION_STATUS_DIV * CONNECTION_STATUS_DIV;
let ts_lsp = ts - ts_msp;
let kind = item.status.to_kind();
let addr = format!("{}", item.addr);
let params = (ts_msp as i64, ts_lsp as i64, kind as i32, addr, ttl.as_secs() as i32);
data_store
.scy
.execute(&data_store.qu_insert_connection_status, params)
.await?;
Ok(())
}
pub async fn insert_channel_status(
item: ChannelStatusItem,
ttl: Duration,
data_store: &DataStore,
) -> Result<(), Error> {
let tsunix = item.ts.duration_since(UNIX_EPOCH).unwrap_or(Duration::ZERO);
let secs = tsunix.as_secs() * SEC;
let nanos = tsunix.subsec_nanos() as u64;
let ts = secs + nanos;
let ts_msp = ts / CONNECTION_STATUS_DIV * CONNECTION_STATUS_DIV;
let ts_lsp = ts - ts_msp;
let kind = item.status.to_kind();
let cssid = item.cssid.id();
let params = (
cssid as i64,
ts_msp as i64,
ts_lsp as i64,
kind as i32,
ttl.as_secs() as i32,
);
data_store
.scy
.execute(&data_store.qu_insert_channel_status, params)
.await?;
let params = (
ts_msp as i64,
ts_lsp as i64,
cssid as i64,
kind as i32,
ttl.as_secs() as i32,
);
data_store
.scy
.execute(&data_store.qu_insert_channel_status_by_ts_msp, params)
.await?;
Ok(())
}
pub struct InsertFut2 {
data_store: Arc<DataStore>,
stats: Arc<InsertWorkerStats>,
kind: InsertFutKind,
}
impl Future for InsertFut2 {
type Output = Result<(), Error>;
fn poll(mut self: Pin<&mut Self>, cx: &mut Context) -> Poll<Self::Output> {
use Poll::*;
todo!()
}
}
pub enum InsertFutKind {
Value,
}
pub struct InsertItemFut {
data_store: Arc<DataStore>,
stats: Arc<InsertWorkerStats>,
item: InsertItem,
}
impl Future for InsertItemFut {
type Output = Result<(), Error>;
fn poll(mut self: Pin<&mut Self>, cx: &mut Context) -> Poll<Self::Output> {
use Poll::*;
todo!()
}
}