/
sqlite_issue_repository.rs
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/
sqlite_issue_repository.rs
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mod issue_id_row;
use std::{num::TryFromIntError, str::FromStr};
use async_trait::async_trait;
use domain::{
aggregate::{IssueAggregate, IssueAggregateError, IssueAggregateEvent},
DomainEvent, IssueId, ParseDomainEventError, Version,
};
use sqlx::{any::AnyArguments, query::Query, Any, AnyPool, Transaction};
use use_case::{IssueRepository, IssueRepositoryError};
use crate::adapter::sqlite::event_store::{Event, EventStreamVersion};
use self::issue_id_row::IssueIdRow;
use super::{
event_store::{self, EventStoreError, EventStreamId},
rdb_connection_pool::RdbConnectionPool,
};
#[derive(Debug, thiserror::Error)]
enum Error {
#[error("EventStore")]
EventStore(#[from] EventStoreError),
#[error("InvalidDomainEvent")]
InvalidDomainEvent(#[from] ParseDomainEventError),
#[error("InvalidIssueId")]
InvalidIssueId(TryFromIntError),
#[error("InvalidVersion")]
InvalidVersion(TryFromIntError),
#[error("IssueAggregate")]
IssueAggregate(#[from] IssueAggregateError),
#[error("RowsAffectedNotEqualOne")]
RowsAffectedNotEqualOne,
#[error("Sqlx")]
Sqlx(#[from] sqlx::Error),
#[error("UnknownAggregateEvent")]
UnknownAggregateEvent,
}
impl From<Error> for IssueRepositoryError {
fn from(e: Error) -> Self {
match e {
Error::EventStore(e) => IssueRepositoryError::Unknown(e.to_string()),
Error::InvalidDomainEvent(e) => IssueRepositoryError::Unknown(e.to_string()),
Error::InvalidIssueId(e) => IssueRepositoryError::Unknown(e.to_string()),
Error::InvalidVersion(e) => IssueRepositoryError::Unknown(e.to_string()),
Error::IssueAggregate(e) => IssueRepositoryError::Unknown(e.to_string()),
Error::RowsAffectedNotEqualOne => IssueRepositoryError::Unknown(e.to_string()),
Error::Sqlx(e) => IssueRepositoryError::Unknown(e.to_string()),
Error::UnknownAggregateEvent => IssueRepositoryError::Unknown(e.to_string()),
}
}
}
#[derive(Debug)]
pub struct SqliteIssueRepository {
pool: AnyPool,
}
impl SqliteIssueRepository {
pub(super) fn new(connection_pool: RdbConnectionPool) -> Result<Self, IssueRepositoryError> {
Ok(Self {
pool: AnyPool::from(connection_pool),
})
}
fn events_to_issue_aggregate_events(
events: Vec<Event>,
) -> Result<Vec<IssueAggregateEvent>, Error> {
let mut aggregate_events = vec![];
for event in events {
let domain_event = DomainEvent::from_str(event.data.as_str())?;
// TODO: check event.version and event_stream_id
let aggregate_event = domain_event.issue().ok_or(Error::UnknownAggregateEvent)?;
aggregate_events.push(aggregate_event);
}
Ok(aggregate_events)
}
async fn find_by_id(&self, issue_id: &IssueId) -> Result<Option<IssueAggregate>, Error> {
let mut transaction = self.pool.begin().await?;
let found = match self
.find_event_stream_id_by_issue_id(&mut transaction, issue_id)
.await?
{
None => None,
Some(event_stream_id) => {
let events =
event_store::find_events_by_event_stream_id(&mut transaction, event_stream_id)
.await?;
let issue_aggregate_events = Self::events_to_issue_aggregate_events(events)?;
IssueAggregate::from_events(&issue_aggregate_events).map(Some)?
}
};
Ok(found)
}
async fn find_by_id_and_version(
&self,
issue_id: &IssueId,
version: &Version,
) -> Result<Option<IssueAggregate>, Error> {
let mut transaction = self.pool.begin().await?;
let event_stream_id = self
.find_event_stream_id_by_issue_id(&mut transaction, issue_id)
.await?;
match event_stream_id {
None => Ok(None),
Some(event_stream_id) => {
let event_stream_version = Self::version_to_event_stream_version(*version)?;
let events =
event_store::find_events_by_event_stream_id_and_version_less_than_equal(
&mut transaction,
event_stream_id,
event_stream_version,
)
.await?;
let issue_aggregate_events = Self::events_to_issue_aggregate_events(events)?;
let issue = IssueAggregate::from_events(&issue_aggregate_events)?;
if issue.version() != *version {
Ok(None)
} else {
Ok(Some(issue))
}
}
}
}
async fn find_event_stream_id_by_issue_id(
&self,
transaction: &mut Transaction<'_, Any>,
issue_id: &IssueId,
) -> Result<Option<EventStreamId>, Error> {
let issue_id_row: Option<IssueIdRow> = sqlx::query_as(include_str!(
"../../../sql/command/select_issue_id_by_issue_id.sql"
))
.bind(Self::issue_number_as_i64_from_issue_id(issue_id)?)
.fetch_optional(&mut *transaction)
.await?;
Ok(issue_id_row.map(|row| row.event_stream_id()))
}
async fn find_max_issue_id(
&self,
transaction: &mut Transaction<'_, Any>,
) -> Result<Option<IssueId>, Error> {
let issue_id_row: Option<IssueIdRow> =
sqlx::query_as(include_str!("../../../sql/command/select_max_issue_id.sql"))
.fetch_optional(transaction)
.await?;
Ok(issue_id_row.map(|row| row.issue_id()))
}
async fn insert_issue_id(
&self,
transaction: &mut Transaction<'_, Any>,
issue_id: &IssueId,
event_stream_id: EventStreamId,
) -> Result<(), Error> {
let query: Query<Any, AnyArguments> =
sqlx::query(include_str!("../../../sql/command/insert_issue_id.sql"))
.bind(Self::issue_number_as_i64_from_issue_id(issue_id)?)
.bind(event_stream_id.to_string());
let rows_affected = query.execute(transaction).await?.rows_affected();
if rows_affected != 1 {
return Err(Error::RowsAffectedNotEqualOne);
}
Ok(())
}
fn issue_number_as_i64_from_issue_id(issue_id: &IssueId) -> Result<i64, Error> {
i64::try_from(usize::from(issue_id.issue_number())).map_err(Error::InvalidIssueId)
}
async fn last_created(&self) -> Result<Option<IssueAggregate>, Error> {
let mut transaction = self.pool.begin().await?;
Ok(match self.find_max_issue_id(&mut transaction).await? {
Some(issue_id) => self.find_by_id(&issue_id).await?,
None => None,
})
}
async fn save(&self, issue: &IssueAggregate) -> Result<(), Error> {
let mut transaction = self.pool.begin().await?;
for event in issue.events().iter().cloned() {
let issue_id = event.issue_id().clone();
if let Some(event_stream_id) = self
.find_event_stream_id_by_issue_id(&mut transaction, &issue_id)
.await?
{
// update
let version = event.version();
event_store::save(
&mut transaction,
version
.prev()
.map(Self::version_to_event_stream_version)
.transpose()?,
Event {
stream_id: event_stream_id,
data: DomainEvent::from(event).to_string(),
stream_seq: Self::version_to_event_stream_version(version)?,
},
)
.await?
} else {
// create
let event_stream_id = EventStreamId::generate();
let version = event.version();
event_store::save(
&mut transaction,
None,
Event {
stream_id: event_stream_id,
data: DomainEvent::from(event).to_string(),
stream_seq: Self::version_to_event_stream_version(version)?,
},
)
.await?;
self.insert_issue_id(&mut transaction, &issue_id, event_stream_id)
.await?;
}
}
transaction.commit().await?;
Ok(())
}
fn version_to_event_stream_version(version: Version) -> Result<EventStreamVersion, Error> {
u32::try_from(u64::from(version))
.map(EventStreamVersion::from)
.map_err(Error::InvalidVersion)
}
}
#[async_trait]
impl IssueRepository for SqliteIssueRepository {
async fn find_by_id(
&self,
issue_id: &IssueId,
) -> Result<Option<IssueAggregate>, IssueRepositoryError> {
Ok(Self::find_by_id(self, issue_id).await?)
}
async fn find_by_id_and_version(
&self,
issue_id: &IssueId,
version: &Version,
) -> Result<Option<IssueAggregate>, IssueRepositoryError> {
Ok(Self::find_by_id_and_version(self, issue_id, version).await?)
}
async fn last_created(&self) -> Result<Option<IssueAggregate>, IssueRepositoryError> {
Ok(Self::last_created(self).await?)
}
async fn save(&self, issue: &IssueAggregate) -> Result<(), IssueRepositoryError> {
Ok(Self::save(self, issue).await?)
}
}
#[cfg(test)]
mod tests {
use domain::IssueResolution;
use limited_date_time::Instant;
use super::*;
#[tokio::test]
async fn test() -> anyhow::Result<()> {
let connection_pool = RdbConnectionPool::new("sqlite::memory:").await?;
let issue_repository = connection_pool.issue_repository()?;
// create
let created = IssueAggregate::new(
Instant::now(),
"123".parse()?,
"title".parse()?,
Some("2021-02-03T04:05:06Z".parse()?),
)?;
issue_repository.save(&created).await?;
// last_created
let last_created = issue_repository.last_created().await?;
assert_eq!(Some(created.clone().truncate_events()), last_created);
// find_by_id
let found = issue_repository.find_by_id(created.id()).await?;
assert_eq!(Some(created.truncate_events()), found);
let found = found.ok_or_else(|| anyhow::anyhow!("found is not Some"))?;
// update
let resolution = IssueResolution::from_str("Duplicate")?;
let updated = found.finish(Some(resolution), Instant::now())?;
issue_repository.save(&updated).await?;
let found = issue_repository.find_by_id(updated.id()).await?;
assert_eq!(Some(updated.truncate_events()), found);
Ok(())
}
}