2022-10-27 11:34:10 +02:00

990 lines
37 KiB
Rust

use std::collections::HashSet;
use std::fs::File;
use std::io::BufWriter;
use crate::{autobatcher::BatchKind, Error, IndexScheduler, Result, TaskId};
use dump::IndexMetadata;
use meilisearch_types::milli::documents::obkv_to_object;
use meilisearch_types::tasks::{Details, Kind, KindWithContent, Status, Task};
use log::{debug, info};
use meilisearch_types::milli::update::IndexDocumentsConfig;
use meilisearch_types::milli::update::{
DocumentAdditionResult, DocumentDeletionResult, IndexDocumentsMethod,
};
use meilisearch_types::milli::{
self, documents::DocumentsBatchReader, update::Settings as MilliSettings, BEU32,
};
use meilisearch_types::settings::{apply_settings_to_builder, Settings, Unchecked};
use meilisearch_types::{
heed::{RoTxn, RwTxn},
Index,
};
use roaring::RoaringBitmap;
use time::OffsetDateTime;
use uuid::Uuid;
#[derive(Debug)]
pub(crate) enum Batch {
Cancel(Task),
TaskDeletion(Task),
Snapshot(Vec<Task>),
Dump(Task),
IndexOperation(IndexOperation),
IndexCreation {
index_uid: String,
primary_key: Option<String>,
task: Task,
},
IndexUpdate {
index_uid: String,
primary_key: Option<String>,
task: Task,
},
IndexDeletion {
index_uid: String,
tasks: Vec<Task>,
},
}
#[derive(Debug)]
pub(crate) enum IndexOperation {
DocumentImport {
index_uid: String,
primary_key: Option<String>,
method: IndexDocumentsMethod,
allow_index_creation: bool,
documents_counts: Vec<u64>,
content_files: Vec<Uuid>,
tasks: Vec<Task>,
},
DocumentDeletion {
index_uid: String,
documents: Vec<String>,
tasks: Vec<Task>,
},
DocumentClear {
index_uid: String,
tasks: Vec<Task>,
},
Settings {
index_uid: String,
// TODO what's that boolean, does it mean that it removes things or what?
settings: Vec<(bool, Settings<Unchecked>)>,
allow_index_creation: bool,
tasks: Vec<Task>,
},
DocumentClearAndSetting {
index_uid: String,
cleared_tasks: Vec<Task>,
// TODO what's that boolean, does it mean that it removes things or what?
settings: Vec<(bool, Settings<Unchecked>)>,
allow_index_creation: bool,
settings_tasks: Vec<Task>,
},
SettingsAndDocumentImport {
index_uid: String,
primary_key: Option<String>,
method: IndexDocumentsMethod,
allow_index_creation: bool,
documents_counts: Vec<u64>,
content_files: Vec<Uuid>,
document_import_tasks: Vec<Task>,
// TODO what's that boolean, does it mean that it removes things or what?
settings: Vec<(bool, Settings<Unchecked>)>,
settings_tasks: Vec<Task>,
},
}
impl Batch {
pub fn ids(&self) -> Vec<TaskId> {
match self {
Batch::Cancel(task)
| Batch::TaskDeletion(task)
| Batch::Dump(task)
| Batch::IndexCreation { task, .. }
| Batch::IndexUpdate { task, .. } => vec![task.uid],
Batch::Snapshot(tasks) | Batch::IndexDeletion { tasks, .. } => {
tasks.iter().map(|task| task.uid).collect()
}
Batch::IndexOperation(operation) => match operation {
IndexOperation::DocumentImport { tasks, .. }
| IndexOperation::DocumentDeletion { tasks, .. }
| IndexOperation::Settings { tasks, .. }
| IndexOperation::DocumentClear { tasks, .. } => {
tasks.iter().map(|task| task.uid).collect()
}
IndexOperation::SettingsAndDocumentImport {
document_import_tasks: tasks,
settings_tasks: other,
..
}
| IndexOperation::DocumentClearAndSetting {
cleared_tasks: tasks,
settings_tasks: other,
..
} => tasks.iter().chain(other).map(|task| task.uid).collect(),
},
}
}
}
impl IndexScheduler {
pub(crate) fn create_next_batch_index(
&self,
rtxn: &RoTxn,
index_uid: String,
batch: BatchKind,
) -> Result<Option<Batch>> {
match batch {
BatchKind::DocumentClear { ids } => {
Ok(Some(Batch::IndexOperation(IndexOperation::DocumentClear {
tasks: self.get_existing_tasks(rtxn, ids)?,
index_uid,
})))
}
BatchKind::DocumentImport {
method,
import_ids,
allow_index_creation,
} => {
let tasks = self.get_existing_tasks(rtxn, import_ids)?;
let primary_key = match &tasks[0].kind {
KindWithContent::DocumentImport { primary_key, .. } => primary_key.clone(),
_ => unreachable!(),
};
let mut documents_counts = Vec::new();
let mut content_files = Vec::new();
for task in &tasks {
match task.kind {
KindWithContent::DocumentImport {
content_file,
documents_count,
..
} => {
documents_counts.push(documents_count);
content_files.push(content_file);
}
_ => unreachable!(),
}
}
Ok(Some(Batch::IndexOperation(
IndexOperation::DocumentImport {
index_uid,
primary_key,
method,
allow_index_creation,
documents_counts,
content_files,
tasks,
},
)))
}
BatchKind::DocumentDeletion { deletion_ids } => {
let tasks = self.get_existing_tasks(rtxn, deletion_ids)?;
let mut documents = Vec::new();
for task in &tasks {
match task.kind {
KindWithContent::DocumentDeletion {
ref documents_ids, ..
} => documents.extend_from_slice(documents_ids),
_ => unreachable!(),
}
}
Ok(Some(Batch::IndexOperation(
IndexOperation::DocumentDeletion {
index_uid,
documents,
tasks,
},
)))
}
BatchKind::Settings {
settings_ids,
allow_index_creation,
} => {
let tasks = self.get_existing_tasks(rtxn, settings_ids)?;
let mut settings = Vec::new();
for task in &tasks {
match task.kind {
KindWithContent::Settings {
ref new_settings,
is_deletion,
..
} => settings.push((is_deletion, new_settings.clone())),
_ => unreachable!(),
}
}
Ok(Some(Batch::IndexOperation(IndexOperation::Settings {
index_uid,
settings,
allow_index_creation,
tasks,
})))
}
BatchKind::ClearAndSettings {
other,
settings_ids,
allow_index_creation,
} => {
let (index_uid, settings, settings_tasks) = match self
.create_next_batch_index(
rtxn,
index_uid,
BatchKind::Settings {
settings_ids,
allow_index_creation,
},
)?
.unwrap()
{
Batch::IndexOperation(IndexOperation::Settings {
index_uid,
settings,
tasks,
..
}) => (index_uid, settings, tasks),
_ => unreachable!(),
};
let (index_uid, cleared_tasks) = match self
.create_next_batch_index(
rtxn,
index_uid,
BatchKind::DocumentClear { ids: other },
)?
.unwrap()
{
Batch::IndexOperation(IndexOperation::DocumentClear { index_uid, tasks }) => {
(index_uid, tasks)
}
_ => unreachable!(),
};
Ok(Some(Batch::IndexOperation(
IndexOperation::DocumentClearAndSetting {
index_uid,
cleared_tasks,
allow_index_creation,
settings,
settings_tasks,
},
)))
}
BatchKind::SettingsAndDocumentImport {
settings_ids,
method,
allow_index_creation,
import_ids,
} => {
let settings = self.create_next_batch_index(
rtxn,
index_uid.clone(),
BatchKind::Settings {
settings_ids,
allow_index_creation,
},
)?;
let document_import = self.create_next_batch_index(
rtxn,
index_uid.clone(),
BatchKind::DocumentImport {
method,
allow_index_creation,
import_ids,
},
)?;
match (document_import, settings) {
(
Some(Batch::IndexOperation(IndexOperation::DocumentImport {
primary_key,
documents_counts,
content_files,
tasks: document_import_tasks,
..
})),
Some(Batch::IndexOperation(IndexOperation::Settings {
settings,
tasks: settings_tasks,
..
})),
) => Ok(Some(Batch::IndexOperation(
IndexOperation::SettingsAndDocumentImport {
index_uid,
primary_key,
method,
allow_index_creation,
documents_counts,
content_files,
document_import_tasks,
settings,
settings_tasks,
},
))),
_ => unreachable!(),
}
}
BatchKind::IndexCreation { id } => {
let task = self.get_task(rtxn, id)?.ok_or(Error::CorruptedTaskQueue)?;
let (index_uid, primary_key) = match &task.kind {
KindWithContent::IndexCreation {
index_uid,
primary_key,
} => (index_uid.clone(), primary_key.clone()),
_ => unreachable!(),
};
Ok(Some(Batch::IndexCreation {
index_uid,
primary_key,
task,
}))
}
BatchKind::IndexUpdate { id } => {
let task = self.get_task(rtxn, id)?.ok_or(Error::CorruptedTaskQueue)?;
let primary_key = match &task.kind {
KindWithContent::IndexUpdate { primary_key, .. } => primary_key.clone(),
_ => unreachable!(),
};
Ok(Some(Batch::IndexUpdate {
index_uid,
primary_key,
task,
}))
}
BatchKind::IndexDeletion { ids } => Ok(Some(Batch::IndexDeletion {
index_uid,
tasks: self.get_existing_tasks(rtxn, ids)?,
})),
BatchKind::IndexSwap { id: _ } => todo!(),
}
}
/// Create the next batch to be processed;
/// 1. We get the *last* task to cancel.
/// 2. We get the *next* task to delete.
/// 3. We get the *next* snapshot to process.
/// 4. We get the *next* dump to process.
/// 5. We get the *next* tasks to process for a specific index.
pub(crate) fn create_next_batch(&self, rtxn: &RoTxn) -> Result<Option<Batch>> {
let enqueued = &self.get_status(rtxn, Status::Enqueued)?;
let to_cancel = self.get_kind(rtxn, Kind::CancelTask)? & enqueued;
// 1. we get the last task to cancel.
if let Some(task_id) = to_cancel.max() {
return Ok(Some(Batch::Cancel(
self.get_task(rtxn, task_id)?
.ok_or(Error::CorruptedTaskQueue)?,
)));
}
// 2. we get the next task to delete
let to_delete = self.get_kind(rtxn, Kind::TaskDeletion)? & enqueued;
if let Some(task_id) = to_delete.min() {
let task = self
.get_task(rtxn, task_id)?
.ok_or(Error::CorruptedTaskQueue)?;
return Ok(Some(Batch::TaskDeletion(task)));
}
// 3. we batch the snapshot.
let to_snapshot = self.get_kind(rtxn, Kind::Snapshot)? & enqueued;
if !to_snapshot.is_empty() {
return Ok(Some(Batch::Snapshot(
self.get_existing_tasks(rtxn, to_snapshot)?,
)));
}
// 4. we batch the dumps.
let to_dump = self.get_kind(rtxn, Kind::DumpExport)? & enqueued;
if let Some(to_dump) = to_dump.min() {
return Ok(Some(Batch::Dump(
self.get_task(rtxn, to_dump)?
.ok_or(Error::CorruptedTaskQueue)?,
)));
}
// 5. We take the next task and try to batch all the tasks associated with this index.
if let Some(task_id) = enqueued.min() {
let task = self
.get_task(rtxn, task_id)?
.ok_or(Error::CorruptedTaskQueue)?;
// This is safe because all the remaining task are associated with
// AT LEAST one index. We can use the right or left one it doesn't
// matter.
let index_name = task.indexes().unwrap()[0];
let index_tasks = self.index_tasks(rtxn, index_name)? & enqueued;
// If autobatching is disabled we only take one task at a time.
let tasks_limit = if self.autobatching_enabled {
usize::MAX
} else {
1
};
let enqueued = index_tasks
.into_iter()
.take(tasks_limit)
.map(|task_id| {
self.get_task(rtxn, task_id)
.and_then(|task| task.ok_or(Error::CorruptedTaskQueue))
.map(|task| (task.uid, task.kind))
})
.collect::<Result<Vec<_>>>()?;
if let Some(batchkind) = crate::autobatcher::autobatch(enqueued) {
return self.create_next_batch_index(rtxn, index_name.to_string(), batchkind);
}
}
// If we found no tasks then we were notified for something that got autobatched
// somehow and there is nothing to do.
Ok(None)
}
pub(crate) fn process_batch(&self, batch: Batch) -> Result<Vec<Task>> {
match batch {
Batch::Cancel(_) => todo!(),
Batch::TaskDeletion(mut task) => {
// 1. Retrieve the tasks that matched the query at enqueue-time.
let matched_tasks =
if let KindWithContent::TaskDeletion { tasks, query: _ } = &task.kind {
tasks
} else {
unreachable!()
};
let mut wtxn = self.env.write_txn()?;
let nbr_deleted_tasks = self.delete_matched_tasks(&mut wtxn, matched_tasks)?;
task.status = Status::Succeeded;
match &mut task.details {
Some(Details::TaskDeletion {
matched_tasks: _,
deleted_tasks,
original_query: _,
}) => {
*deleted_tasks = Some(nbr_deleted_tasks);
}
_ => unreachable!(),
}
wtxn.commit()?;
Ok(vec![task])
}
Batch::Snapshot(_) => todo!(),
Batch::Dump(mut task) => {
let started_at = OffsetDateTime::now_utc();
let (keys, instance_uid, dump_uid) = if let KindWithContent::DumpExport {
keys,
instance_uid,
dump_uid,
} = &task.kind
{
(keys, instance_uid, dump_uid)
} else {
unreachable!();
};
let dump = dump::DumpWriter::new(instance_uid.clone())?;
// 1. dump the keys
let mut dump_keys = dump.create_keys()?;
for key in keys {
dump_keys.push_key(key)?;
}
dump_keys.flush()?;
let rtxn = self.env.read_txn()?;
// 2. dump the tasks
let mut dump_tasks = dump.create_tasks_queue()?;
for ret in self.all_tasks.iter(&rtxn)? {
let (_, mut t) = ret?;
let status = t.status;
let content_file = t.content_uuid().map(|uuid| uuid.clone());
// In the case we're dumping ourselves we want to be marked as finished
// to not loop over ourselves indefinitely.
if t.uid == task.uid {
let finished_at = OffsetDateTime::now_utc();
// We're going to fake the date because we don't know if everything is going to go well.
// But we need to dump the task as finished and successful.
// If something fail everything will be set appropriately in the end.
t.status = Status::Succeeded;
t.started_at = Some(started_at);
t.finished_at = Some(finished_at);
}
let mut dump_content_file = dump_tasks.push_task(&t.into())?;
// 2.1. Dump the `content_file` associated with the task if there is one and the task is not finished yet.
if let Some(content_file) = content_file {
if status == Status::Enqueued {
let content_file = self.file_store.get_update(content_file)?;
let reader = DocumentsBatchReader::from_reader(content_file)
.map_err(milli::Error::from)?;
let (mut cursor, documents_batch_index) =
reader.into_cursor_and_fields_index();
while let Some(doc) =
cursor.next_document().map_err(milli::Error::from)?
{
dump_content_file.push_document(&obkv_to_object(
&doc,
&documents_batch_index,
)?)?;
}
dump_content_file.flush()?;
}
}
}
dump_tasks.flush()?;
// 3. Dump the indexes
for (uid, index) in self.index_mapper.indexes(&rtxn)? {
let rtxn = index.read_txn()?;
let metadata = IndexMetadata {
uid: uid.clone(),
primary_key: index.primary_key(&rtxn)?.map(String::from),
created_at: index.created_at(&rtxn)?,
updated_at: index.updated_at(&rtxn)?,
};
let mut index_dumper = dump.create_index(&uid, &metadata)?;
let fields_ids_map = index.fields_ids_map(&rtxn)?;
let all_fields: Vec<_> = fields_ids_map.iter().map(|(id, _)| id).collect();
// 3.1. Dump the documents
for ret in index.all_documents(&rtxn)? {
let (_id, doc) = ret?;
let document = milli::obkv_to_json(&all_fields, &fields_ids_map, doc)?;
index_dumper.push_document(&document)?;
}
// 3.2. Dump the settings
let settings = meilisearch_types::settings::settings(&index, &rtxn)?;
index_dumper.settings(&settings)?;
}
let path = self.dumps_path.join(format!("{}.dump", dump_uid));
let file = File::create(path)?;
dump.persist_to(BufWriter::new(file))?;
// if we reached this step we can tell the scheduler we succeeded to dump ourselves.
task.status = Status::Succeeded;
Ok(vec![task])
}
Batch::IndexOperation(operation) => {
#[rustfmt::skip]
let index = match operation {
IndexOperation::DocumentDeletion { ref index_uid, .. }
| IndexOperation::DocumentClear { ref index_uid, .. } => {
// only get the index, don't create it
let rtxn = self.env.read_txn()?;
self.index_mapper.index(&rtxn, index_uid)?
}
IndexOperation::DocumentImport { ref index_uid, allow_index_creation, .. }
| IndexOperation::Settings { ref index_uid, allow_index_creation, .. }
| IndexOperation::DocumentClearAndSetting { ref index_uid, allow_index_creation, .. }
| IndexOperation::SettingsAndDocumentImport {ref index_uid, allow_index_creation, .. } => {
if allow_index_creation {
// create the index if it doesn't already exist
let mut wtxn = self.env.write_txn()?;
let index = self.index_mapper.create_index(&mut wtxn, index_uid)?;
wtxn.commit()?;
index
} else {
let rtxn = self.env.read_txn()?;
self.index_mapper.index(&rtxn, index_uid)?
}
}
};
let mut index_wtxn = index.write_txn()?;
let tasks = self.apply_index_operation(&mut index_wtxn, &index, operation)?;
index_wtxn.commit()?;
Ok(tasks)
}
Batch::IndexCreation {
index_uid,
primary_key,
task,
} => {
let mut wtxn = self.env.write_txn()?;
self.index_mapper.create_index(&mut wtxn, &index_uid)?;
wtxn.commit()?;
self.process_batch(Batch::IndexUpdate {
index_uid,
primary_key,
task,
})
}
Batch::IndexUpdate {
index_uid,
primary_key,
mut task,
} => {
let rtxn = self.env.read_txn()?;
let index = self.index_mapper.index(&rtxn, &index_uid)?;
if let Some(primary_key) = primary_key.clone() {
let mut index_wtxn = index.write_txn()?;
let mut builder = MilliSettings::new(
&mut index_wtxn,
&index,
self.index_mapper.indexer_config(),
);
builder.set_primary_key(primary_key);
builder.execute(|_| ())?;
index_wtxn.commit()?;
}
task.status = Status::Succeeded;
task.details = Some(Details::IndexInfo { primary_key });
Ok(vec![task])
}
Batch::IndexDeletion {
index_uid,
mut tasks,
} => {
let wtxn = self.env.write_txn()?;
let number_of_documents = {
let index = self.index_mapper.index(&wtxn, &index_uid)?;
let index_rtxn = index.read_txn()?;
index.number_of_documents(&index_rtxn)?
};
// The write transaction is directly owned and commited inside.
self.index_mapper.delete_index(wtxn, &index_uid)?;
// We set all the tasks details to the default value.
for task in &mut tasks {
task.status = Status::Succeeded;
task.details = match &task.kind {
KindWithContent::IndexDeletion { .. } => Some(Details::ClearAll {
deleted_documents: Some(number_of_documents),
}),
otherwise => otherwise.default_details(),
};
}
Ok(tasks)
}
}
}
fn apply_index_operation<'txn, 'i>(
&self,
index_wtxn: &'txn mut RwTxn<'i, '_>,
index: &'i Index,
operation: IndexOperation,
) -> Result<Vec<Task>> {
match operation {
IndexOperation::DocumentClear { mut tasks, .. } => {
let count = milli::update::ClearDocuments::new(index_wtxn, index).execute()?;
let mut first_clear_found = false;
for task in &mut tasks {
task.status = Status::Succeeded;
// The first document clear will effectively delete every documents
// in the database but the next ones will clear 0 documents.
task.details = match &task.kind {
KindWithContent::DocumentClear { .. } => {
let count = if first_clear_found { 0 } else { count };
first_clear_found = true;
Some(Details::ClearAll {
deleted_documents: Some(count),
})
}
otherwise => otherwise.default_details(),
};
}
Ok(tasks)
}
IndexOperation::DocumentImport {
index_uid: _,
primary_key,
method,
allow_index_creation: _,
documents_counts,
content_files,
mut tasks,
} => {
let indexer_config = self.index_mapper.indexer_config();
// TODO use the code from the IndexCreate operation
if let Some(primary_key) = primary_key {
if index.primary_key(index_wtxn)?.is_none() {
let mut builder =
milli::update::Settings::new(index_wtxn, index, indexer_config);
builder.set_primary_key(primary_key);
builder.execute(|_| ())?;
}
}
let config = IndexDocumentsConfig {
update_method: method,
..Default::default()
};
let mut builder = milli::update::IndexDocuments::new(
index_wtxn,
index,
indexer_config,
config,
|indexing_step| debug!("update: {:?}", indexing_step),
)?;
let mut results = Vec::new();
for content_uuid in content_files.into_iter() {
let content_file = self.file_store.get_update(content_uuid)?;
let reader = DocumentsBatchReader::from_reader(content_file)
.map_err(milli::Error::from)?;
let (new_builder, user_result) = builder.add_documents(reader)?;
builder = new_builder;
let user_result = match user_result {
Ok(count) => Ok(DocumentAdditionResult {
indexed_documents: count,
number_of_documents: count, // TODO: this is wrong, we should use the value stored in the Details.
}),
Err(e) => Err(milli::Error::from(e)),
};
results.push(user_result);
}
if results.iter().any(|res| res.is_ok()) {
let addition = builder.execute()?;
info!("document addition done: {:?}", addition);
}
for (task, (ret, count)) in tasks
.iter_mut()
.zip(results.into_iter().zip(documents_counts))
{
match ret {
Ok(DocumentAdditionResult {
indexed_documents,
number_of_documents,
}) => {
task.status = Status::Succeeded;
task.details = Some(Details::DocumentAddition {
received_documents: number_of_documents,
indexed_documents: Some(indexed_documents),
});
}
Err(error) => {
task.status = Status::Failed;
task.details = Some(Details::DocumentAddition {
received_documents: count,
indexed_documents: Some(count),
});
task.error = Some(error.into())
}
}
}
Ok(tasks)
}
IndexOperation::DocumentDeletion {
index_uid: _,
documents,
mut tasks,
} => {
let mut builder = milli::update::DeleteDocuments::new(index_wtxn, index)?;
documents.iter().for_each(|id| {
builder.delete_external_id(id);
});
let DocumentDeletionResult {
deleted_documents, ..
} = builder.execute()?;
for (task, documents) in tasks.iter_mut().zip(documents) {
task.status = Status::Succeeded;
task.details = Some(Details::DocumentDeletion {
received_document_ids: documents.len(),
deleted_documents: Some(deleted_documents),
});
}
Ok(tasks)
}
IndexOperation::Settings {
index_uid: _,
settings,
allow_index_creation: _,
mut tasks,
} => {
let indexer_config = self.index_mapper.indexer_config();
// TODO merge the settings to only do *one* reindexation.
for (task, (_, settings)) in tasks.iter_mut().zip(settings) {
let checked_settings = settings.clone().check();
task.details = Some(Details::Settings { settings });
let mut builder =
milli::update::Settings::new(index_wtxn, index, indexer_config);
apply_settings_to_builder(&checked_settings, &mut builder);
builder.execute(|indexing_step| {
debug!("update: {:?}", indexing_step);
})?;
task.status = Status::Succeeded;
}
Ok(tasks)
}
IndexOperation::SettingsAndDocumentImport {
index_uid,
primary_key,
method,
allow_index_creation,
documents_counts,
content_files,
document_import_tasks,
settings,
settings_tasks,
} => {
let settings_tasks = self.apply_index_operation(
index_wtxn,
index,
IndexOperation::Settings {
index_uid: index_uid.clone(),
settings,
allow_index_creation,
tasks: settings_tasks,
},
)?;
let mut import_tasks = self.apply_index_operation(
index_wtxn,
index,
IndexOperation::DocumentImport {
index_uid,
primary_key,
method,
allow_index_creation,
documents_counts,
content_files,
tasks: document_import_tasks,
},
)?;
let mut tasks = settings_tasks;
tasks.append(&mut import_tasks);
Ok(tasks)
}
IndexOperation::DocumentClearAndSetting {
index_uid,
cleared_tasks,
settings,
allow_index_creation,
settings_tasks,
} => {
let mut import_tasks = self.apply_index_operation(
index_wtxn,
index,
IndexOperation::DocumentClear {
index_uid: index_uid.clone(),
tasks: cleared_tasks,
},
)?;
let settings_tasks = self.apply_index_operation(
index_wtxn,
index,
IndexOperation::Settings {
index_uid,
settings,
allow_index_creation,
tasks: settings_tasks,
},
)?;
let mut tasks = settings_tasks;
tasks.append(&mut import_tasks);
Ok(tasks)
}
}
}
/// Delete each given task from all the databases (if it is deleteable).
///
/// Return the number of tasks that were actually deleted.
fn delete_matched_tasks(
&self,
wtxn: &mut RwTxn,
matched_tasks: &RoaringBitmap,
) -> Result<usize> {
// 1. Remove from this list the tasks that we are not allowed to delete
let enqueued_tasks = self.get_status(wtxn, Status::Enqueued)?;
let processing_tasks = &self.processing_tasks.read().unwrap().processing.clone();
let all_task_ids = self.all_task_ids(&wtxn)?;
let mut to_delete_tasks = all_task_ids & matched_tasks;
to_delete_tasks -= processing_tasks;
to_delete_tasks -= enqueued_tasks;
// 2. We now have a list of tasks to delete, delete them
let mut affected_indexes = HashSet::new();
let mut affected_statuses = HashSet::new();
let mut affected_kinds = HashSet::new();
for task_id in to_delete_tasks.iter() {
let task = self
.get_task(wtxn, task_id)?
.ok_or(Error::CorruptedTaskQueue)?;
if let Some(task_indexes) = task.indexes() {
affected_indexes.extend(task_indexes.into_iter().map(|x| x.to_owned()));
}
affected_statuses.insert(task.status);
affected_kinds.insert(task.kind.as_kind());
// Note: don't delete the persisted task data since
// we can only delete succeeded, failed, and canceled tasks.
// In each of those cases, the persisted data is supposed to
// have been deleted already.
}
for index in affected_indexes {
self.update_index(wtxn, &index, |bitmap| {
*bitmap -= &to_delete_tasks;
})?;
}
for status in affected_statuses {
self.update_status(wtxn, status, |bitmap| {
*bitmap -= &to_delete_tasks;
})?;
}
for kind in affected_kinds {
self.update_kind(wtxn, kind, |bitmap| {
*bitmap -= &to_delete_tasks;
})?;
}
for task in to_delete_tasks.iter() {
self.all_tasks.delete(wtxn, &BEU32::new(task))?;
}
Ok(to_delete_tasks.len() as usize)
}
}