114 lines
3.1 KiB
Rust
114 lines
3.1 KiB
Rust
use super::skeleton;
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use super::actor::*;
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use super::schemas::dataspace::*;
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use super::schemas::dataspace::_Any;
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use preserves::value::Map;
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use std::convert::TryFrom;
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#[derive(Debug)]
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pub struct Churn {
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pub assertions_added: usize,
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pub assertions_removed: usize,
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pub endpoints_added: usize,
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pub endpoints_removed: usize,
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pub observers_added: usize,
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pub observers_removed: usize,
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pub messages_injected: usize,
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pub messages_delivered: usize,
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}
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impl Churn {
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pub fn new() -> Self {
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Self {
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assertions_added: 0,
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assertions_removed: 0,
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endpoints_added: 0,
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endpoints_removed: 0,
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observers_added: 0,
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observers_removed: 0,
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messages_injected: 0,
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messages_delivered: 0,
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}
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}
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pub fn reset(&mut self) {
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*self = Churn::new()
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}
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}
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#[derive(Debug)]
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pub struct Dataspace {
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pub index: skeleton::Index,
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pub handle_map: Map<Handle, (_Any, Option<Observe>)>,
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pub churn: Churn,
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}
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impl Dataspace {
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pub fn new() -> Self {
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Self {
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index: skeleton::Index::new(),
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handle_map: Map::new(),
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churn: Churn::new(),
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}
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}
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pub fn assertion_count(&self) -> usize {
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self.index.assertion_count()
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}
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pub fn endpoint_count(&self) -> isize {
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self.index.endpoint_count()
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}
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pub fn observer_count(&self) -> usize {
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self.index.observer_count()
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}
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}
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impl Entity<_Any> for Dataspace {
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fn assert(&mut self, t: &mut Activation, a: _Any, h: Handle) -> ActorResult {
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// tracing::trace!(assertion = debug(&a), handle = debug(&h), "assert");
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let old_assertions = self.index.assertion_count();
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self.index.insert(t, &a);
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self.churn.assertions_added += self.index.assertion_count() - old_assertions;
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self.churn.endpoints_added += 1;
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if let Ok(o) = Observe::try_from(&a) {
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self.index.add_observer(t, &o.pattern, &o.observer);
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self.churn.observers_added += 1;
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self.handle_map.insert(h, (a, Some(o)));
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} else {
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self.handle_map.insert(h, (a, None));
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}
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Ok(())
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}
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fn retract(&mut self, t: &mut Activation, h: Handle) -> ActorResult {
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// tracing::trace!(handle = debug(&h), "retract");
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if let Some((a, maybe_o)) = self.handle_map.remove(&h) {
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if let Some(o) = maybe_o {
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self.index.remove_observer(t, o.pattern, &o.observer);
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self.churn.observers_removed += 1;
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}
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let old_assertions = self.index.assertion_count();
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self.index.remove(t, &a);
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self.churn.assertions_removed += old_assertions - self.index.assertion_count();
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self.churn.endpoints_removed += 1;
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}
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Ok(())
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}
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fn message(&mut self, t: &mut Activation, m: _Any) -> ActorResult {
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// tracing::trace!(body = debug(&m), "message");
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self.index.send(t, &m, &mut self.churn.messages_delivered);
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self.churn.messages_injected += 1;
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Ok(())
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}
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}
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