1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173

//! Operator and utilities to source data from the underlying Timely
//! logging streams.

use std::cell::RefCell;
use std::collections::HashMap;
use std::rc::{Rc, Weak};
use std::time::{Duration, Instant};

use timely::dataflow::channels::pact::Pipeline;
use timely::dataflow::operators::capture::event::link::EventLink;
use timely::dataflow::operators::capture::Replay;
use timely::dataflow::operators::generic::builder_rc::OperatorBuilder;
use timely::dataflow::{Scope, Stream};
use timely::logging::{BatchLogger, TimelyEvent};

use crate::server::scheduler::Scheduler;
use crate::sources::Sourceable;
use crate::{Aid, Value};
use Value::{Bool, Eid};

/// One or more taps into Timely logging.
#[derive(Hash, PartialEq, Eq, PartialOrd, Ord, Clone, Debug, Serialize, Deserialize)]
pub struct TimelyLogging {
    /// The log attributes that should be materialized.
    pub attributes: Vec<Aid>,
}

impl Sourceable<Duration> for TimelyLogging {
    fn source<S: Scope<Timestamp = Duration>>(
        &self,
        scope: &mut S,
        _t0: Instant,
        _scheduler: Weak<RefCell<Scheduler>>,
    ) -> Vec<(Aid, Stream<S, ((Value, Value), Duration, isize)>)> {
        let events = Rc::new(EventLink::new());
        let mut logger = BatchLogger::new(events.clone());

        scope
            .log_register()
            .insert::<TimelyEvent, _>("timely", move |time, data| logger.publish_batch(time, data));

        let input = Some(events).replay_into(scope);

        let mut demux = OperatorBuilder::new("Timely Logging Demux".to_string(), scope.clone());

        let mut input = demux.new_input(&input, Pipeline);

        let mut wrappers = HashMap::with_capacity(self.attributes.len());
        let mut streams = HashMap::with_capacity(self.attributes.len());

        for aid in self.attributes.iter() {
            let (wrapper, stream) = demux.new_output();
            wrappers.insert(aid.to_string(), wrapper);
            streams.insert(aid.to_string(), stream);
        }

        let mut demux_buffer = Vec::new();
        let num_interests = self.attributes.len();

        demux.build(move |_capability| {
            move |_frontiers| {
                let mut handles = HashMap::with_capacity(num_interests);
                for (aid, wrapper) in wrappers.iter_mut() {
                    handles.insert(aid.to_string(), wrapper.activate());
                }

                input.for_each(|time, data| {
                    data.swap(&mut demux_buffer);

                    let mut sessions = HashMap::with_capacity(num_interests);
                    for (aid, handle) in handles.iter_mut() {
                        sessions.insert(aid.to_string(), handle.session(&time));
                    }

                    for (time, _worker, datum) in demux_buffer.drain(..) {
                        match datum {
                            TimelyEvent::Operates(mut x) => {
                                let eid = Eid(x.id as u64);
                                let name = Value::String(x.name);

                                // The id of this operator within its scope.
                                let local_id = Eid(x.addr.pop().unwrap() as u64);

                                if x.addr.is_empty() {
                                    // This is a top-level subgraph and thus lives in the root.
                                    sessions
                                        .get_mut("timely/scope")
                                        .map(|s| s.give(((eid.clone(), Eid(0)), time, 1)));
                                } else {
                                    // The leaf scope that this operator resides in.
                                    let scope = Eid(x.addr.pop().unwrap() as u64);

                                    sessions
                                        .get_mut("timely/scope")
                                        .map(|s| s.give(((eid.clone(), scope.clone()), time, 1)));

                                    if !x.addr.is_empty() {
                                        // This means that there are one or more parent scopes.
                                        // We want to make sure our scope is linked to its parent. But
                                        // we can assume all others are doing the same, so we don't need to
                                        // re-introduce edges for higher-level ancestors.
                                        let parent = Eid(x.addr.pop().unwrap() as u64);
                                        sessions
                                            .get_mut("timely/scope")
                                            .map(|s| s.give(((scope, parent), time, 1)));
                                    }
                                }

                                sessions
                                    .get_mut("timely.event.operates/local-id")
                                    .map(|s| s.give(((eid.clone(), local_id), time, 1)));
                                sessions
                                    .get_mut("timely.event.operates/name")
                                    .map(|s| s.give(((eid, name), time, 1)));
                            }
                            TimelyEvent::Shutdown(x) => {
                                let eid = Eid(x.id as u64);
                                sessions
                                    .get_mut("timely.event.operates/shutdown?")
                                    .map(|s| s.give(((eid, Bool(true)), time, 1)));
                            }
                            TimelyEvent::Channels(mut x) => {
                                let eid = Eid(x.id as u64);
                                let src_index = Eid(x.source.0 as u64);
                                let src_port = Eid(x.source.1 as u64);
                                let target_index = Eid(x.target.0 as u64);
                                let target_port = Eid(x.target.1 as u64);

                                // The leaf scope that this channel resides in.
                                let scope = Eid(x.scope_addr.pop().unwrap() as u64);

                                sessions
                                    .get_mut("timely/scope")
                                    .map(|s| s.give(((eid.clone(), scope.clone()), time, 1)));
                                sessions
                                    .get_mut("timely.event.channels/src-index")
                                    .map(|s| s.give(((eid.clone(), src_index), time, 1)));
                                sessions
                                    .get_mut("timely.event.channels/src-port")
                                    .map(|s| s.give(((eid.clone(), src_port), time, 1)));
                                sessions
                                    .get_mut("timely.event.channels/target-index")
                                    .map(|s| s.give(((eid.clone(), target_index), time, 1)));
                                sessions
                                    .get_mut("timely.event.channels/target-port")
                                    .map(|s| s.give(((eid, target_port), time, 1)));
                            }
                            TimelyEvent::Schedule(x) => {
                                let eid = Eid(x.id as u64);
                                let is_started =
                                    Bool(x.start_stop == ::timely::logging::StartStop::Start);

                                sessions
                                    .get_mut("schedule/started?")
                                    .map(|s| s.give(((eid, is_started), time, 1)));
                            }
                            TimelyEvent::Messages(_x) => {
                                // @TODO
                                // (MessagesChannel, (x.seq_noValue::Usize(x.channel), Value::Bool(x.is_send), Value::Usize(x.source), Value::Usize(x.target), Value::Usize(x.seq_no), Value::Usize(x.length)
                            }
                            _ => {}
                        }
                    }
                });
            }
        });

        self.attributes
            .iter()
            .map(|aid| (aid.to_string(), streams.remove(aid).unwrap()))
            .collect()
    }
}