Make examples work #47
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📝 WalkthroughWalkthroughThis pull request introduces significant changes to the handling of suspended events and intents across multiple modules. The Additionally, a new Possibly related PRs
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Actionable comments posted: 6
🧹 Outside diff range and nitpick comments (2)
aper/src/aper.rs (1)
Line range hint
1-30: Summary: Changes look good, but thorough testing is recommended.The modifications to the
suspended_eventmethod in theApertrait align with the PR objective of making examples work. The change fromIntentMetadatatoDateTime<Utc>simplifies the suspended event structure.Given the potential impact of this change on the broader codebase, I recommend:
- Updating all implementations of the
Apertrait to match the new signature.- Reviewing and updating any code that relies on the
suspended_eventmethod.- Conducting thorough testing, including integration tests, to ensure that the changes don't introduce any regressions or unexpected behavior.
- Updating relevant documentation to reflect the new structure of suspended events.
These steps will help ensure that the changes are fully integrated and don't cause issues in other parts of the system.
examples/drop-four/common/src/state.rs (1)
227-234: Consider using dynamic timestamps in testsIn the test code, the
timestampfield is set to a fixed value usingUtc.timestamp_millis_opt(0).unwrap(). For more realistic tests, consider using the current time or varying timestamps to simulate real-world scenarios.You can update the timestamps as follows:
let player1_meta = IntentMetadata { client: Some(player1), - timestamp: Utc.timestamp_millis_opt(0).unwrap(), + timestamp: Utc::now(), }; let player2_meta = IntentMetadata { client: Some(player2), - timestamp: Utc.timestamp_millis_opt(0).unwrap(), + timestamp: Utc::now(), };
📜 Review details
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📒 Files selected for processing (7)
- aper-stateroom/src/lib.rs (4 hunks)
- aper/src/aper.rs (2 hunks)
- aper/src/connection.rs (3 hunks)
- examples/counter/common/src/lib.rs (2 hunks)
- examples/drop-four/common/src/state.rs (11 hunks)
- examples/drop-four/service/.cargo/config (1 hunks)
- examples/timer/common/src/lib.rs (2 hunks)
✅ Files skipped from review due to trivial changes (1)
- examples/drop-four/service/.cargo/config
🔇 Additional comments (12)
examples/counter/common/src/lib.rs (4)
1-1: LGTM: Import statement updated correctly.The import statement has been appropriately updated to replace
IntentEventwithIntentMetadata, which aligns with the changes made to theapplymethod signature.
26-26: LGTM: Method signature updated appropriately.The
applymethod signature has been updated to directly use&CounterIntentinstead of&IntentEvent<CounterIntent>, simplifying the interface. The addition of the_metadata: &IntentMetadataparameter allows for future use of intent metadata if needed. The underscore prefix in_metadatacorrectly indicates that it's currently unused.
29-29: LGTM: Method implementation updated correctly.The
applymethod implementation has been correctly updated to useintentinstead ofevent.intentin the match statement. This change is consistent with the new method signature, and the overall logic for handling the intents (Add, Subtract, and Reset) remains unchanged, preserving the functionality of modifying the counter's value.
Line range hint
1-42: Overall: Changes improve code structure and maintainability.The modifications to the
Counterstruct and itsAperimplementation enhance the code's clarity and align well with the PR objective of making examples work. The changes simplify intent handling and prepare the code for potential future use of intent metadata.aper/src/aper.rs (2)
6-6: LGTM: New import added correctly.The new import from the
chronocrate is necessary for the changes made to thesuspended_eventmethod. It's correctly placed with other external crate imports.
28-30: LGTM:suspended_eventmethod signature updated.The change from
Option<(Self::Intent, IntentMetadata)>toOption<(DateTime<Utc>, Self::Intent)>simplifies the suspended event structure by replacingIntentMetadatawith a timestamp. This aligns with the PR objective of making examples work.Please verify that all implementations of the
Apertrait have been updated to match this new signature. Run the following script to check for any remaining occurrences of the old signature:✅ Verification successful
Further Verification Required: Ensure all
suspended_eventimplementations use the new signature.Please run the following scripts to verify that every implementation of the
Apertrait correctly uses the updatedsuspended_eventmethod signature and thatIntentMetadatais no longer referenced in this context:
Verification Successful: All
suspended_eventimplementations are updated correctly.The
suspended_eventmethod signature has been uniformly updated across the codebase, and there are no remaining references toIntentMetadatawithin its implementations.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Check for occurrences of the old suspended_event signature # Test: Search for the old signature. Expect: No results. rg --type rust 'fn suspended_event.*Option<\(.*Intent, IntentMetadata\)>' # Test: Search for implementations of the Aper trait. Expect: All implementations use the new signature. rg --type rust 'impl.*Aper.*\{' -A 10Length of output: 17229
Script:
#!/bin/bash # Description: Verify all implementations of `suspended_event` use the new signature and do not reference `IntentMetadata` # Check for implementations of the new `suspended_event` signature rg --type rust 'fn suspended_event\(&self\) -> Option<\(DateTime<Utc>, Self::Intent\)>' # Ensure `IntentMetadata` is not used within `suspended_event` implementations rg --type rust 'fn suspended_event\(&self\).*IntentMetadata'Length of output: 242
examples/timer/common/src/lib.rs (1)
21-27: Implementation ofapplymethod is correctThe
applymethod correctly handles intents by updatingself.valueandself.last_incrementusing the providedintentandmetadata. The logic aligns with the intended functionality.aper-stateroom/src/lib.rs (2)
14-14: Change tosuspended_eventfield type is appropriateThe modification of the
suspended_eventfield to includeDateTime<Utc>enhances clarity by explicitly associating a timestamp with the suspended intent. This is consistent with the updated handling of suspended events.
51-51: Duration calculation handles scheduling correctlyThe calculation of
durusingev.0.signed_duration_since(Utc::now())correctly computes the duration until the scheduled event. The use of.max(0)ensures that the timer is set to zero if the event time is in the past, preventing negative durations.aper/src/connection.rs (2)
86-86: Confirm consistency in constructingMessageToServer::Intentwith newmetadatafieldIncluding the
metadatafield when constructingMessageToServer::Intentensures that the message aligns with the updated enum definition. This consistency is important for correct serialization and deserialization of messages.
168-168: Update pattern matching to include the newmetadatafieldBy adding
metadatato the pattern match in thereceivemethod, you ensure that all necessary information is correctly extracted from theMessageToServer::Intent. This update is crucial for processing intents with the new metadata.examples/drop-four/common/src/state.rs (1)
157-158: Ensureapplymethod signature aligns with theApertraitThe
applymethod signature has been updated to acceptintentandmetadataseparately. Please verify that this change is consistent with theApertrait definition and that all implementations and invocations are updated accordingly.You can run the following script to confirm that all
Aperimplementations have updated theapplymethod signature:✅ Verification successful
Confirmed:
applymethod signature aligns with theApertrait🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify that all implementations of the `Aper` trait have the updated `apply` method signature. # Search for `impl Aper` blocks and check for the `apply` method signature. rg --type rust -A5 'impl\s+Aper\s+for' | rg 'fn\s+apply\(&mut self,\s*intent:.*,\s*metadata:.*\)'Length of output: 359
| fn suspended_event(&self) -> Option<(DateTime<Utc>, TimerIntent)> { | ||
| let next_event = self | ||
| .last_increment | ||
| .get() | ||
| .checked_add_signed(Duration::seconds(1)) | ||
| .unwrap(); | ||
|
|
||
| Some(IntentEvent::new(None, next_event, TimerIntent::Increment)) | ||
| Some((next_event, TimerIntent::Increment)) |
There was a problem hiding this comment.
Avoid potential panic by handling None case in suspended_event
Using .unwrap() after checked_add_signed can cause a panic if the date arithmetic results in an overflow. It's safer to handle the Option returned to prevent unexpected panics.
Consider handling the None case explicitly:
fn suspended_event(&self) -> Option<(DateTime<Utc>, TimerIntent)> {
let next_event = self
.last_increment
.get()
- .checked_add_signed(Duration::seconds(1))
- .unwrap();
+ .checked_add_signed(Duration::seconds(1))?;
Some((next_event, TimerIntent::Increment))
}This change ensures that if an overflow occurs, the function gracefully returns None instead of panicking.
📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| fn suspended_event(&self) -> Option<(DateTime<Utc>, TimerIntent)> { | |
| let next_event = self | |
| .last_increment | |
| .get() | |
| .checked_add_signed(Duration::seconds(1)) | |
| .unwrap(); | |
| Some(IntentEvent::new(None, next_event, TimerIntent::Increment)) | |
| Some((next_event, TimerIntent::Increment)) | |
| fn suspended_event(&self) -> Option<(DateTime<Utc>, TimerIntent)> { | |
| let next_event = self | |
| .last_increment | |
| .get() | |
| .checked_add_signed(Duration::seconds(1))?; | |
| Some((next_event, TimerIntent::Increment)) | |
| } |
| if let Some((_timestamp, intent)) = self.suspended_event.take() { | ||
| let intent = bincode::serialize(&intent).unwrap(); | ||
| self.process_message( | ||
| MessageToServer::Intent { | ||
| intent: event, | ||
| intent, | ||
| client_version: 0, | ||
| metadata: IntentMetadata::new(None, Utc::now()), |
There was a problem hiding this comment.
Use the original timestamp when constructing IntentMetadata
Currently, IntentMetadata is initialized with the current time using Utc::now(). To accurately reflect the intended execution time of the suspended intent, consider using the original timestamp _timestamp extracted from self.suspended_event.
Apply this diff to use the scheduled timestamp:
metadata: IntentMetadata::new(None, Utc::now()),
+metadata: IntentMetadata::new(None, _timestamp),Committable suggestion was skipped due to low confidence.
| @@ -12,6 +12,7 @@ pub enum MessageToServer { | |||
| Intent { | |||
| intent: Vec<u8>, | |||
| client_version: u64, | |||
| metadata: IntentMetadata, | |||
There was a problem hiding this comment.
Ensure backward compatibility when adding metadata to MessageToServer::Intent
Adding the metadata field to the MessageToServer::Intent enum variant may lead to deserialization issues with clients or servers that are not updated to handle this new field. This change can break compatibility with existing systems.
Consider implementing versioning for your messages or providing default values to maintain backward compatibility with older clients and servers.
| self.player_map.teal_player.set(metadata.client); | ||
| } else if self.player_map.brown_player.get().is_none() { | ||
| self.player_map.brown_player.set(event.client); | ||
| self.player_map.brown_player.set(metadata.client); |
There was a problem hiding this comment.
Handle potential None values for metadata.client
When assigning metadata.client to teal_player and brown_player, ensure that metadata.client is Some(client_id) to avoid assigning None as a player ID, which may lead to unexpected behavior.
You can modify the code to check for Some(client_id) before assignment:
if self.player_map.teal_player.get().is_none() {
+ if let Some(client_id) = metadata.client {
self.player_map.teal_player.set(Some(client_id));
+ } else {
+ return Err(()); // Handle None client ID appropriately
+ }
} else if self.player_map.brown_player.get().is_none() {
+ if let Some(client_id) = metadata.client {
self.player_map.brown_player.set(Some(client_id));
self.play_state.set(PlayState::Playing);
+ } else {
+ return Err(()); // Handle None client ID appropriately
+ }
}Committable suggestion was skipped due to low confidence.
| @@ -171,15 +171,15 @@ | |||
| if self.winner.get().is_some() { | |||
| return Ok(()); | |||
| } // Someone has already won. | |||
| if self.player_map.id_of_color(self.next_player.get()) != event.client { | |||
| if self.player_map.id_of_color(self.next_player.get()) != metadata.client { | |||
There was a problem hiding this comment.
Ensure correct comparison of client IDs
The comparison between self.player_map.id_of_color(self.next_player.get()) and metadata.client compares two Option<u32> values. To avoid potential mismatches due to None values, consider unwrapping both options safely before comparison.
You might adjust the code as follows:
- if self.player_map.id_of_color(self.next_player.get()) != metadata.client {
+ if let (Some(expected_id), Some(actual_id)) = (
+ self.player_map.id_of_color(self.next_player.get()),
+ metadata.client,
+ ) {
+ if expected_id != actual_id {
+ return Ok(()); // Play out of turn.
+ }
+ } else {
+ return Ok(()); // Missing player ID.
+ }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| if self.player_map.id_of_color(self.next_player.get()) != metadata.client { | |
| if let (Some(expected_id), Some(actual_id)) = ( | |
| self.player_map.id_of_color(self.next_player.get()), | |
| metadata.client, | |
| ) { | |
| if expected_id != actual_id { | |
| return Ok(()); // Play out of turn. | |
| } | |
| } else { | |
| return Ok(()); // Missing player ID. | |
| } |
| if let Some(insert_row) = self.board.lowest_open_row(*c as u32) { | ||
| self.board | ||
| .set(insert_row, c as u32, Some(self.next_player.get())); | ||
| .set(insert_row, *c as u32, Some(self.next_player.get())); |
There was a problem hiding this comment.
Add bounds check for column index to prevent potential panics
When casting *c from usize to u32, ensure that the column index is within valid bounds to prevent integer overflow or out-of-bounds access.
Apply this diff to add a bounds check:
+ if (*c as u32) >= BOARD_COLS {
+ return Err(()); // Column index is out of bounds.
+ }
if let Some(insert_row) = self.board.lowest_open_row(*c as u32) {
self.board
.set(insert_row, *c as u32, Some(self.next_player.get()));Committable suggestion was skipped due to low confidence.
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