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use std::collections::HashMap;
use std::time::Duration;
use differential_dataflow::collection::AsCollection;
use differential_dataflow::operators::arrange::arrangement::Arrange;
use differential_dataflow::operators::count::CountTotal;
use differential_dataflow::operators::Count;
use timely::communication::Allocate;
use timely::dataflow::operators::capture::EventLink;
use timely::dataflow::operators::generic::builder_rc::OperatorBuilder;
use timely::logging::WorkerIdentifier;
use tracing::error;
use super::{LogVariant, MaterializedLog};
use crate::activator::RcActivator;
use crate::arrangement::manager::RowSpine;
use crate::arrangement::KeysValsHandle;
use crate::replay::MzReplay;
use expr::{permutation_for_arrangement, GlobalId, MirScalarExpr, SourceInstanceId};
use repr::adt::jsonb::Jsonb;
use repr::{Datum, DatumVec, Row, Timestamp};
pub type Logger = timely::logging_core::Logger<MaterializedEvent, WorkerIdentifier>;
#[derive(Debug, Clone, PartialOrd, PartialEq)]
pub enum MaterializedEvent {
Dataflow(GlobalId, bool),
DataflowDependency {
dataflow: GlobalId,
source: GlobalId,
},
KafkaSourceStatistics {
source_id: SourceInstanceId,
old: Option<Jsonb>,
new: Option<Jsonb>,
},
Peek(Peek, bool),
SourceInfo {
source_name: String,
source_id: SourceInstanceId,
partition_id: Option<String>,
offset: i64,
timestamp: i64,
},
Frontier(GlobalId, Timestamp, i64),
}
#[derive(
Debug, Clone, Ord, PartialOrd, Eq, PartialEq, Hash, serde::Serialize, serde::Deserialize,
)]
pub struct Peek {
id: GlobalId,
time: Timestamp,
conn_id: u32,
}
impl Peek {
pub fn new(id: GlobalId, time: Timestamp, conn_id: u32) -> Self {
Self { id, time, conn_id }
}
}
pub fn construct<A: Allocate>(
worker: &mut timely::worker::Worker<A>,
config: &dataflow_types::logging::LoggingConfig,
linked: std::rc::Rc<EventLink<Timestamp, (Duration, WorkerIdentifier, MaterializedEvent)>>,
activator: RcActivator,
) -> std::collections::HashMap<LogVariant, KeysValsHandle> {
let granularity_ms = std::cmp::max(1, config.granularity_ns / 1_000_000) as Timestamp;
let traces = worker.dataflow_named("Dataflow: mz logging", move |scope| {
let logs = Some(linked).mz_replay(
scope,
"materialized logs",
Duration::from_nanos(config.granularity_ns as u64),
activator,
);
let mut demux =
OperatorBuilder::new("Materialize Logging Demux".to_string(), scope.clone());
use timely::dataflow::channels::pact::Pipeline;
let mut input = demux.new_input(&logs, Pipeline);
let (mut dataflow_out, dataflow) = demux.new_output();
let (mut dependency_out, dependency) = demux.new_output();
let (mut frontier_out, frontier) = demux.new_output();
let (mut kafka_source_statistics_out, kafka_source_statistics) = demux.new_output();
let (mut peek_out, peek) = demux.new_output();
let (mut peek_duration_out, peek_duration) = demux.new_output();
let (mut source_info_out, source_info) = demux.new_output();
let mut demux_buffer = Vec::new();
demux.build(move |_capability| {
let mut active_dataflows = std::collections::HashMap::new();
let mut peek_stash = std::collections::HashMap::new();
move |_frontiers| {
let mut dataflow = dataflow_out.activate();
let mut dependency = dependency_out.activate();
let mut frontier = frontier_out.activate();
let mut kafka_source_statistics = kafka_source_statistics_out.activate();
let mut peek = peek_out.activate();
let mut peek_duration = peek_duration_out.activate();
let mut source_info = source_info_out.activate();
input.for_each(|time, data| {
data.swap(&mut demux_buffer);
let mut dataflow_session = dataflow.session(&time);
let mut dependency_session = dependency.session(&time);
let mut frontier_session = frontier.session(&time);
let mut kafka_source_statistics_session =
kafka_source_statistics.session(&time);
let mut peek_session = peek.session(&time);
let mut peek_duration_session = peek_duration.session(&time);
let mut source_info_session = source_info.session(&time);
for (time, worker, datum) in demux_buffer.drain(..) {
let time_ms = (((time.as_millis() as Timestamp / granularity_ms) + 1)
* granularity_ms) as Timestamp;
match datum {
MaterializedEvent::Dataflow(id, is_create) => {
let diff = if is_create { 1 } else { -1 };
dataflow_session.give(((id, worker), time_ms, diff));
if is_create {
active_dataflows.insert((id, worker), vec![]);
} else {
let key = &(id, worker);
match active_dataflows.remove(key) {
Some(sources) => {
for (source, worker) in sources {
let n = key.0;
dependency_session.give((
(n, source, worker),
time_ms,
-1,
));
}
}
None => error!(
"no active dataflow exists at time of drop. \
name={} worker={}",
key.0, worker
),
}
}
}
MaterializedEvent::DataflowDependency { dataflow, source } => {
dependency_session.give(((dataflow, source, worker), time_ms, 1));
let key = (dataflow, worker);
match active_dataflows.get_mut(&key) {
Some(existing_sources) => {
existing_sources.push((source, worker))
}
None => error!(
"tried to create source for dataflow that doesn't exist: \
dataflow={} source={} worker={}",
key.0, source, worker,
),
}
}
MaterializedEvent::Frontier(name, logical, delta) => {
frontier_session.give((
Row::pack_slice(&[
Datum::String(&name.to_string()),
Datum::Int64(worker as i64),
Datum::Int64(logical as i64),
]),
time_ms,
delta as isize,
));
}
MaterializedEvent::KafkaSourceStatistics {
source_id,
old,
new,
} => {
if let Some(old) = old {
kafka_source_statistics_session.give((
(source_id, worker, old),
time_ms,
-1,
));
}
if let Some(new) = new {
kafka_source_statistics_session.give((
(source_id, worker, new),
time_ms,
1,
));
}
}
MaterializedEvent::Peek(peek, is_install) => {
let key = (worker, peek.conn_id);
if is_install {
peek_session.give(((peek, worker), time_ms, 1));
if peek_stash.contains_key(&key) {
error!(
"peek already registered: \
worker={}, connection_id: {}",
worker, key.1,
);
}
peek_stash.insert(key, time.as_nanos());
} else {
peek_session.give(((peek, worker), time_ms, -1));
if let Some(start) = peek_stash.remove(&key) {
let elapsed_ns = time.as_nanos() - start;
peek_duration_session.give((
(key.0, elapsed_ns.next_power_of_two()),
time_ms,
1isize,
));
} else {
error!(
"peek not yet registered: \
worker={}, connection_id: {}",
worker, key.1,
);
}
}
}
MaterializedEvent::SourceInfo {
source_name,
source_id,
partition_id,
offset,
timestamp,
} => {
source_info_session.give((
(source_name, source_id, partition_id),
time_ms,
(offset, timestamp),
));
}
}
}
});
}
});
let dataflow_current = dataflow.as_collection().map({
move |(name, worker)| {
Row::pack_slice(&[
Datum::String(&name.to_string()),
Datum::Int64(worker as i64),
])
}
});
let dependency_current = dependency.as_collection().map({
move |(dataflow, source, worker)| {
Row::pack_slice(&[
Datum::String(&dataflow.to_string()),
Datum::String(&source.to_string()),
Datum::Int64(worker as i64),
])
}
});
let frontier_current = frontier.as_collection();
let kafka_source_statistics_current = kafka_source_statistics.as_collection().map({
move |(source_id, worker, stats)| {
let mut row = Row::pack_slice(&[
Datum::String(&source_id.to_string()),
Datum::Int64(worker as i64),
]);
row.extend_by_row(&stats.into_row());
row
}
});
let peek_current = peek.as_collection().map({
move |(peek, worker)| {
Row::pack_slice(&[
Datum::String(&format!("{}", peek.conn_id)),
Datum::Int64(worker as i64),
Datum::String(&peek.id.to_string()),
Datum::Int64(peek.time as i64),
])
}
});
let source_info_current = source_info.as_collection().count().map({
move |((name, id, pid), (offset, timestamp))| {
Row::pack_slice(&[
Datum::String(&name),
Datum::String(&id.source_id.to_string()),
Datum::Int64(id.dataflow_id as i64),
Datum::from(pid.as_deref()),
Datum::Int64(offset),
Datum::Int64(timestamp),
])
}
});
let peek_duration = peek_duration.as_collection().count_total().map({
move |((worker, pow), count)| {
Row::pack_slice(&[
Datum::Int64(worker as i64),
Datum::Int64(pow as i64),
Datum::Int64(count as i64),
])
}
});
let logs = vec![
(
LogVariant::Materialized(MaterializedLog::DataflowCurrent),
dataflow_current,
),
(
LogVariant::Materialized(MaterializedLog::DataflowDependency),
dependency_current,
),
(
LogVariant::Materialized(MaterializedLog::FrontierCurrent),
frontier_current,
),
(
LogVariant::Materialized(MaterializedLog::KafkaSourceStatistics),
kafka_source_statistics_current,
),
(
LogVariant::Materialized(MaterializedLog::PeekCurrent),
peek_current,
),
(
LogVariant::Materialized(MaterializedLog::PeekDuration),
peek_duration,
),
(
LogVariant::Materialized(MaterializedLog::SourceInfo),
source_info_current,
),
];
let mut result = std::collections::HashMap::new();
for (variant, collection) in logs {
if config.active_logs.contains_key(&variant) {
let key = variant.index_by();
let (_, value) = permutation_for_arrangement::<HashMap<_, _>>(
&key.iter()
.cloned()
.map(MirScalarExpr::Column)
.collect::<Vec<_>>(),
variant.desc().arity(),
);
let trace = collection
.map({
let mut row_packer = Row::default();
let mut datums = DatumVec::new();
move |row| {
let datums = datums.borrow_with(&row);
row_packer.extend(key.iter().map(|k| datums[*k]));
let row_key = row_packer.finish_and_reuse();
row_packer.extend(value.iter().map(|k| datums[*k]));
(row_key, row_packer.finish_and_reuse())
}
})
.arrange_named::<RowSpine<_, _, _, _>>(&format!("ArrangeByKey {:?}", variant))
.trace;
result.insert(variant, trace);
}
}
result
});
traces
}