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REFACTOR A solid final draft.

This commit is contained in:
Elf M. Sternberg 2020-11-12 14:30:39 -08:00
parent 013ca18c62
commit e3fe863235
3 changed files with 471 additions and 525 deletions
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3
server/nm-store/src/lib.rs
View File

@ -7,7 +7,6 @@ pub use crate::errors::NoteStoreError;
pub use crate::store::NoteStore;
pub use crate::structs::{Note, NoteKind, NoteRelationship, PageRelationship};
#[cfg(test)]
mod tests {
use super::*;
@ -113,6 +112,4 @@ mod tests {
assert_eq!(newpages[1].parent_id, Some(newroot.id.clone()));
assert_eq!(newpages[2].parent_id, Some(newpages[1].id.clone()));
}
}

656
server/nm-store/src/store/private.rs
View File

@ -3,8 +3,8 @@ use lazy_static::lazy_static;
use regex::Regex;
use slug::slugify;
use sqlx::{sqlite::Sqlite, Acquire, Done, Executor, Transaction};
use std::collections::HashSet;
use std::cmp;
use std::collections::HashSet;
type SqlResult<T> = sqlx::Result<T>;
@ -20,25 +20,24 @@ type SqlResult<T> = sqlx::Result<T>;
// of the SQL queries.
lazy_static! {
static ref SELECT_PAGE_BY_TITLE_SQL: String = str::replace(
include_str!("sql/select_notes_by_parameter.sql"),
"QUERYPARAMETER",
"notes.content"
);
static ref SELECT_PAGE_BY_TITLE_SQL: String = str::replace(
include_str!("sql/select_notes_by_parameter.sql"),
"QUERYPARAMETER",
"notes.content"
);
}
lazy_static! {
static ref SELECT_PAGE_BY_ID_SQL: String = str::replace(
include_str!("sql/select_notes_by_parameter.sql"),
"QUERYPARAMETER",
"notes.id"
);
static ref SELECT_PAGE_BY_ID_SQL: String = str::replace(
include_str!("sql/select_notes_by_parameter.sql"),
"QUERYPARAMETER",
"notes.id"
);
}
lazy_static! {
static ref SELECT_NOTES_BACKREFERENCING_PAGE_SQL: &'static str =
include_str!("sql/select_notes_backreferencing_page.sql");
static ref SELECT_NOTES_BACKREFERENCING_PAGE_SQL: &'static str =
include_str!("sql/select_notes_backreferencing_page.sql");
}
// ___ _
@ -49,13 +48,10 @@ lazy_static! {
pub(crate) async fn reset_database<'a, E>(executor: E) -> SqlResult<()>
where
E: Executor<'a, Database = Sqlite>,
E: Executor<'a, Database = Sqlite>,
{
let initialize_sql = include_str!("sql/initialize_database.sql");
sqlx::query(initialize_sql)
.execute(executor)
.await
.map(|_| ())
let initialize_sql = include_str!("sql/initialize_database.sql");
sqlx::query(initialize_sql).execute(executor).await.map(|_| ())
}
// ___ _ _ _ __ _
@ -68,16 +64,12 @@ where
// SQL operations are quite different between the first two and the last.
async fn select_object_by_query<'a, E>(executor: E, query: &str, field: &str) -> SqlResult<Vec<Note>>
where
E: Executor<'a, Database = Sqlite>,
E: Executor<'a, Database = Sqlite>,
{
let r: Vec<RowNote> = sqlx::query_as(query)
.bind(field)
.fetch_all(executor)
.await?;
Ok(r.into_iter().map(|z| Note::from(z)).collect())
let r: Vec<RowNote> = sqlx::query_as(query).bind(field).fetch_all(executor).await?;
Ok(r.into_iter().map(|z| Note::from(z)).collect())
}
// Select the requested page via its id. This is fairly rare;
// pages should usually be picked up via their title, but if you're
// navigating to an instance, this is how you specify the page in a
@ -89,9 +81,9 @@ where
// page.
pub(crate) async fn select_page_by_slug<'a, E>(executor: E, slug: &str) -> SqlResult<Vec<Note>>
where
E: Executor<'a, Database = Sqlite>,
E: Executor<'a, Database = Sqlite>,
{
select_object_by_query(executor, &SELECT_PAGE_BY_ID_SQL, &slug).await
select_object_by_query(executor, &SELECT_PAGE_BY_ID_SQL, &slug).await
}
// Fetch the page by title. The return value is an array of Note
@ -99,23 +91,20 @@ where
// these into a tree-like object.
pub(crate) async fn select_page_by_title<'a, E>(executor: E, title: &str) -> SqlResult<Vec<Note>>
where
E: Executor<'a, Database = Sqlite>,
E: Executor<'a, Database = Sqlite>,
{
select_object_by_query(executor, &SELECT_PAGE_BY_TITLE_SQL, &title).await
select_object_by_query(executor, &SELECT_PAGE_BY_TITLE_SQL, &title).await
}
// Fetch all backreferences to a page. The return value is an array
// of arrays, and inside each array is a list from a root page to
// the note that references the give page. Clients may choose how
// they want to display that collection.
pub(crate) async fn select_backreferences_for_page<'a, E>(
executor: E,
page_id: &str,
) -> SqlResult<Vec<Note>>
pub(crate) async fn select_backreferences_for_page<'a, E>(executor: E, page_id: &str) -> SqlResult<Vec<Note>>
where
E: Executor<'a, Database = Sqlite>,
E: Executor<'a, Database = Sqlite>,
{
select_object_by_query(executor, &SELECT_NOTES_BACKREFERENCING_PAGE_SQL, &page_id).await
select_object_by_query(executor, &SELECT_NOTES_BACKREFERENCING_PAGE_SQL, &page_id).await
}
// ___ _ ___ _ _ _
@ -127,53 +116,52 @@ where
// Inserts a single note into the notes table. That is all.
pub(crate) async fn insert_note<'a, E>(executor: E, note: &NewNote) -> SqlResult<String>
where
E: Executor<'a, Database = Sqlite>,
E: Executor<'a, Database = Sqlite>,
{
let insert_one_note_sql = concat!(
"INSERT INTO notes (id, content, kind, ",
" creation_date, updated_date, lastview_date) ",
"VALUES (?, ?, ?, ?, ?, ?);"
);
let insert_one_note_sql = concat!(
"INSERT INTO notes (id, content, kind, ",
" creation_date, updated_date, lastview_date) ",
"VALUES (?, ?, ?, ?, ?, ?);"
);
let _ = sqlx::query(insert_one_note_sql)
.bind(&note.id)
.bind(&note.content)
.bind(note.kind.to_string())
.bind(&note.creation_date)
.bind(&note.updated_date)
.bind(&note.lastview_date)
.execute(executor)
.await?;
Ok(note.id.clone())
let _ = sqlx::query(insert_one_note_sql)
.bind(&note.id)
.bind(&note.content)
.bind(note.kind.to_string())
.bind(&note.creation_date)
.bind(&note.updated_date)
.bind(&note.lastview_date)
.execute(executor)
.await?;
Ok(note.id.clone())
}
// Inserts a single note into the notes table. That is all.
pub(crate) async fn bulk_insert_notes<'a, E>(executor: E, notes: &[NewNote]) -> SqlResult<()>
pub(crate) async fn insert_bulk_notes<'a, E>(executor: E, notes: &[NewNote]) -> SqlResult<()>
where
E: Executor<'a, Database = Sqlite>,
E: Executor<'a, Database = Sqlite>,
{
if notes.is_empty() {
return Ok(());
}
if notes.is_empty() {
return Ok(());
}
let insert_pattern = "VALUES (?, ?, ?, ?, ?, ?)".to_string();
let insert_bulk_notes_sql =
"INSERT INTO notes (id, content, kind, creation_date, updated_date, lastview_date) ".to_string()
+ &[insert_pattern.as_str()]
.repeat(notes.len())
.join(", ") + &";".to_string();
let insert_pattern = "VALUES (?, ?, ?, ?, ?, ?)".to_string();
let insert_bulk_notes_sql = "INSERT INTO notes (id, content, kind, creation_date, updated_date, lastview_date) "
.to_string()
+ &[insert_pattern.as_str()].repeat(notes.len()).join(", ")
+ &";".to_string();
let mut request = sqlx::query(&insert_bulk_notes_sql);
for note in notes {
request = request
.bind(&note.id)
.bind(&note.content)
.bind(note.kind.to_string())
.bind(&note.creation_date)
.bind(&note.updated_date)
.bind(&note.lastview_date);
}
request.execute(executor).await.map(|_| ())
let mut request = sqlx::query(&insert_bulk_notes_sql);
for note in notes {
request = request
.bind(&note.id)
.bind(&note.content)
.bind(note.kind.to_string())
.bind(&note.creation_date)
.bind(&note.updated_date)
.bind(&note.lastview_date);
}
request.execute(executor).await.map(|_| ())
}
// ___ _ _ _ _ __ _
@ -185,21 +173,21 @@ where
// Given a possible slug, find the slug with the highest
// uniquification number, and return that number, if any.
pub(crate) fn find_maximal_slug_number(slugs: &[JustId]) -> Option<u32> {
lazy_static! {
static ref RE_CAP_NUM: Regex = Regex::new(r"-(\d+)$").unwrap();
}
lazy_static! {
static ref RE_CAP_NUM: Regex = Regex::new(r"-(\d+)$").unwrap();
}
if slugs.is_empty() {
return None;
}
if slugs.is_empty() {
return None;
}
let mut slug_counters: Vec<u32> = slugs
.iter()
.filter_map(|slug| RE_CAP_NUM.captures(&slug.id))
.map(|cap| cap.get(1).unwrap().as_str().parse::<u32>().unwrap())
.collect();
slug_counters.sort_unstable();
slug_counters.pop()
let mut slug_counters: Vec<u32> = slugs
.iter()
.filter_map(|slug| RE_CAP_NUM.captures(&slug.id))
.map(|cap| cap.get(1).unwrap().as_str().parse::<u32>().unwrap())
.collect();
slug_counters.sort_unstable();
slug_counters.pop()
}
// Given an initial string and an existing collection of slugs,
@ -208,38 +196,38 @@ pub(crate) fn find_maximal_slug_number(slugs: &[JustId]) -> Option<u32> {
// isn't all that.
pub(crate) async fn generate_slug<'a, E>(executor: E, title: &str) -> SqlResult<String>
where
E: Executor<'a, Database = Sqlite>,
E: Executor<'a, Database = Sqlite>,
{
lazy_static! {
static ref RE_STRIP_NUM: Regex = Regex::new(r"-\d+$").unwrap();
static ref SLUG_FINDER_SQL: String = format!(
"SELECT id FROM notes WHERE kind = '{}' AND id LIKE '?%';",
NoteKind::Page.to_string()
);
}
lazy_static! {
static ref RE_STRIP_NUM: Regex = Regex::new(r"-\d+$").unwrap();
static ref SLUG_FINDER_SQL: String = format!(
"SELECT id FROM notes WHERE kind = '{}' AND id LIKE '?%';",
NoteKind::Page.to_string()
);
}
let initial_slug = slugify(title);
let sample_slug = RE_STRIP_NUM.replace_all(&initial_slug, "");
let similar_slugs: Vec<JustId> = sqlx::query_as(&SLUG_FINDER_SQL)
.bind(&*sample_slug)
.fetch_all(executor)
.await?;
let maximal_slug_number = find_maximal_slug_number(&similar_slugs);
Ok(match maximal_slug_number {
None => initial_slug,
Some(slug_number) => format!("{}-{}", initial_slug, slug_number + 1),
})
let initial_slug = slugify(title);
let sample_slug = RE_STRIP_NUM.replace_all(&initial_slug, "");
let similar_slugs: Vec<JustId> = sqlx::query_as(&SLUG_FINDER_SQL)
.bind(&*sample_slug)
.fetch_all(executor)
.await?;
let maximal_slug_number = find_maximal_slug_number(&similar_slugs);
Ok(match maximal_slug_number {
None => initial_slug,
Some(slug_number) => format!("{}-{}", initial_slug, slug_number + 1),
})
}
// A helper function: given a title and a slug, create a PageType
// note.
pub(crate) fn create_page(title: &str, slug: &str) -> NewNote {
NewNoteBuilder::default()
.id(slug.to_string())
.content(title.to_string())
.kind(NoteKind::Page)
.build()
.unwrap()
NewNoteBuilder::default()
.id(slug.to_string())
.content(title.to_string())
.kind(NoteKind::Page)
.build()
.unwrap()
}
// _ _ _ _ ___ _ _ _
@ -248,26 +236,22 @@ pub(crate) fn create_page(title: &str, slug: &str) -> NewNote {
// \___/| .__/\__,_\__,_|\__\___| \___/|_||_\___| |_|\_\___/\__\___|
// |_|
pub(crate) async fn update_note_content<'a, E>(
executor: E,
note_id: &NoteId,
content: &str,
) -> SqlResult<()>
pub(crate) async fn update_note_content<'a, E>(executor: E, note_id: &str, content: &str) -> SqlResult<()>
where
E: Executor<'a, Database = Sqlite>,
E: Executor<'a, Database = Sqlite>,
{
let update_note_content_sql = "UPDATE notes SET content = ? WHERE note_id = ?";
let count = sqlx::query(update_note_content_sql)
.bind(content)
.bind(&**note_id)
.execute(executor)
.await?
.rows_affected();
let update_note_content_sql = "UPDATE notes SET content = ? WHERE note_id = ?";
let count = sqlx::query(update_note_content_sql)
.bind(content)
.bind(&**note_id)
.execute(executor)
.await?
.rows_affected();
match count {
1 => Ok(()),
_ => Err(sqlx::Error::RowNotFound),
}
match count {
1 => Ok(()),
_ => Err(sqlx::Error::RowNotFound),
}
}
// ___ _ _ ___ _ _ _ ___ _ _ _ _ _
@ -277,25 +261,25 @@ where
// |_|
pub(crate) async fn select_note_to_note_relationship<'a, E>(
executor: E,
parent_id: &str,
note_id: &str,
executor: E,
parent_id: &str,
note_id: &str,
) -> SqlResult<NoteRelationship>
where
E: Executor<'a, Database = Sqlite>,
E: Executor<'a, Database = Sqlite>,
{
let get_note_to_note_relationship_sql = concat!(
"SELECT parent_id, note_id, location, kind ",
"FROM note_relationships ",
"WHERE parent_id = ? and note_id = ? ",
"LIMIT 1"
);
let s: NoteRelationshipRow = sqlx::query_as(get_note_to_note_relationship_sql)
.bind(parent_id)
.bind(note_id)
.fetch_one(executor)
.await?;
Ok(NoteRelationship::from(s))
let get_note_to_note_relationship_sql = concat!(
"SELECT parent_id, note_id, location, kind ",
"FROM note_relationships ",
"WHERE parent_id = ? and note_id = ? ",
"LIMIT 1"
);
let s: NoteRelationshipRow = sqlx::query_as(get_note_to_note_relationship_sql)
.bind(parent_id)
.bind(note_id)
.fetch_one(executor)
.await?;
Ok(NoteRelationship::from(s))
}
// _ _ _ _ _ _ _ ___ _ _ _ _ _
@ -305,83 +289,80 @@ where
// |_|
pub(crate) async fn insert_note_to_note_relationship<'a, E>(
executor: E,
parent_id: &str,
note_id: &str,
location: i64,
kind: &RelationshipKind,
executor: E,
parent_id: &str,
note_id: &str,
location: i64,
kind: &RelationshipKind,
) -> SqlResult<()>
where
E: Executor<'a, Database = Sqlite>,
E: Executor<'a, Database = Sqlite>,
{
let insert_note_to_note_relationship_sql = concat!(
"INSERT INTO note_relationships (parent_id, note_id, location, kind) ",
"values (?, ?, ?, ?)"
);
let insert_note_to_note_relationship_sql = concat!(
"INSERT INTO note_relationships (parent_id, note_id, location, kind) ",
"values (?, ?, ?, ?)"
);
let _ = sqlx::query(insert_note_to_note_relationship_sql)
.bind(parent_id)
.bind(note_id)
.bind(&location)
.bind(kind.to_string())
.execute(executor)
.await?;
Ok(())
let _ = sqlx::query(insert_note_to_note_relationship_sql)
.bind(parent_id)
.bind(note_id)
.bind(&location)
.bind(kind.to_string())
.execute(executor)
.await?;
Ok(())
}
pub(crate) async fn make_room_for_new_note<'a, E>(
executor: E,
parent_id: &str,
location: i64,
pub(crate) async fn make_room_for_new_note_relationship<'a, E>(
executor: E,
parent_id: &str,
location: i64,
) -> SqlResult<()>
where
E: Executor<'a, Database = Sqlite>,
E: Executor<'a, Database = Sqlite>,
{
let make_room_for_new_note_sql = concat!(
"UPDATE note_relationships ",
"SET location = location + 1 ",
"WHERE location >= ? and parent_id = ?;"
);
let make_room_for_new_note_sql = concat!(
"UPDATE note_relationships ",
"SET location = location + 1 ",
"WHERE location >= ? and parent_id = ?;"
);
let _ = sqlx::query(make_room_for_new_note_sql)
.bind(&location)
.bind(parent_id)
.execute(executor)
.await?;
Ok(())
let _ = sqlx::query(make_room_for_new_note_sql)
.bind(&location)
.bind(parent_id)
.execute(executor)
.await?;
Ok(())
}
pub(crate) async fn determine_max_child_location_for_note<'a, E>(
executor: E,
note_id: &str,
comp_loc: Option<i64>,
executor: E,
note_id: &str,
comp_loc: Option<i64>,
) -> SqlResult<i64>
where
E: Executor<'a, Database = Sqlite>,
E: Executor<'a, Database = Sqlite>,
{
let row_count = assert_max_child_location_for_note(executor, note_id).await? + 1;
Ok(match comp_loc {
Some(location) => cmp::min(row_count, location),
None => row_count
})
let row_count = assert_max_child_location_for_note(executor, note_id).await? + 1;
Ok(match comp_loc {
Some(location) => cmp::min(row_count, location),
None => row_count,
})
}
pub(crate) async fn assert_max_child_location_for_note<'a, E>(
executor: E,
note_id: &str,
) -> SqlResult<i64>
pub(crate) async fn assert_max_child_location_for_note<'a, E>(executor: E, note_id: &str) -> SqlResult<i64>
where
E: Executor<'a, Database = Sqlite>,
E: Executor<'a, Database = Sqlite>,
{
let assert_max_child_location_for_note_sql =
"SELECT MAX(location) AS count FROM note_relationships WHERE parent_id = ?;";
let assert_max_child_location_for_note_sql =
"SELECT MAX(location) AS count FROM note_relationships WHERE parent_id = ?;";
let count: RowCount = sqlx::query_as(assert_max_child_location_for_note_sql)
.bind(note_id)
.fetch_one(executor)
.await?;
let count: RowCount = sqlx::query_as(assert_max_child_location_for_note_sql)
.bind(note_id)
.fetch_one(executor)
.await?;
Ok(count.count)
Ok(count.count)
}
// _ _ _ _ _ __ _ ___ _ _ _ _ _
@ -391,57 +372,49 @@ where
// |_|
pub(crate) async fn insert_bulk_note_to_page_relationships<'a, E>(
executor: E,
note_id: &str,
references: &[String],
executor: E,
note_id: &str,
references: &[String],
) -> SqlResult<()>
where
E: Executor<'a, Database = Sqlite>,
E: Executor<'a, Database = Sqlite>,
{
if references.is_empty() {
return Ok(());
}
if references.is_empty() {
return Ok(());
}
let insert_pattern = format!("(?, ?, '{}')", PageRelationshipKind::Page.to_string());
let insert_note_page_references_sql =
"INSERT INTO note_page_relationships (note_id, page_id, kind) VALUES ".to_string()
+ &[insert_pattern.as_str()]
.repeat(references.len())
.join(", ") + &";".to_string();
let insert_pattern = format!("(?, ?, '{}')", PageRelationshipKind::Page.to_string());
let insert_note_page_references_sql = "INSERT INTO note_page_relationships (note_id, page_id, kind) VALUES "
.to_string()
+ &[insert_pattern.as_str()].repeat(references.len()).join(", ")
+ &";".to_string();
let mut request = sqlx::query(&insert_note_page_references_sql);
for reference in references {
request = request.bind(note_id).bind(reference);
}
let mut request = sqlx::query(&insert_note_page_references_sql);
for reference in references {
request = request.bind(note_id).bind(reference);
}
request.execute(executor).await.map(|_| ())
request.execute(executor).await.map(|_| ())
}
pub(crate) async fn delete_bulk_note_to_page_relationships<'a, E>(
executor: E,
note_id: &str,
) -> SqlResult<()>
pub(crate) async fn delete_bulk_note_to_page_relationships<'a, E>(executor: E, note_id: &str) -> SqlResult<()>
where
E: Executor<'a, Database = Sqlite>,
E: Executor<'a, Database = Sqlite>,
{
let delete_note_to_page_relationship_sql =
"DELETE FROM note_page_relationships WHERE and note_id = ?;";
let _ = sqlx::query(delete_note_to_page_relationship_sql)
.bind(note_id)
.execute(executor)
.await?;
Ok(())
let delete_note_to_page_relationship_sql = "DELETE FROM note_page_relationships WHERE and note_id = ?;";
let _ = sqlx::query(delete_note_to_page_relationship_sql)
.bind(note_id)
.execute(executor)
.await?;
Ok(())
}
// Given the references supplied, and the references found in the datastore,
// return a list of the references not found in the datastore.
pub(crate) fn diff_references(
references: &[String],
found_references: &[PageTitle],
) -> Vec<String> {
let all: HashSet<String> = references.iter().cloned().collect();
let found: HashSet<String> = found_references.iter().map(|r| r.content.clone()).collect();
all.difference(&found).cloned().collect()
pub(crate) fn diff_references(references: &[String], found_references: &[PageTitle]) -> Vec<String> {
let all: HashSet<String> = references.iter().cloned().collect();
let found: HashSet<String> = found_references.iter().map(|r| r.content.clone()).collect();
all.difference(&found).cloned().collect()
}
// ___ _ _ _ _ __ _ ___ _ _ _ _ _
@ -454,32 +427,31 @@ pub(crate) fn diff_references(
// list of titles. Used by insert_note and update_note_content to
// find the ids of all the references in a given document.
pub(crate) async fn find_all_page_from_list_of_references<'a, E>(
executor: E,
references: &[String],
executor: E,
references: &[String],
) -> SqlResult<Vec<PageTitle>>
where
E: Executor<'a, Database = Sqlite>,
E: Executor<'a, Database = Sqlite>,
{
if references.is_empty() {
return Ok(vec![]);
}
if references.is_empty() {
return Ok(vec![]);
}
lazy_static! {
static ref SELECT_ALL_REFERENCES_FOR_SQL_BASE: String = format!(
"SELECT id, content FROM notes WHERE kind = '{}' AND content IN (",
NoteKind::Page.to_string()
);
}
lazy_static! {
static ref SELECT_ALL_REFERENCES_FOR_SQL_BASE: String = format!(
"SELECT id, content FROM notes WHERE kind = '{}' AND content IN (",
NoteKind::Page.to_string()
);
}
let find_all_references_for_sql = SELECT_ALL_REFERENCES_FOR_SQL_BASE.to_string()
+ &["?"].repeat(references.len()).join(",")
+ &");".to_string();
let find_all_references_for_sql =
SELECT_ALL_REFERENCES_FOR_SQL_BASE.to_string() + &["?"].repeat(references.len()).join(",") + &");".to_string();
let mut request = sqlx::query_as(&find_all_references_for_sql);
for id in references.iter() {
request = request.bind(id);
}
request.fetch_all(executor).await
let mut request = sqlx::query_as(&find_all_references_for_sql);
for id in references.iter() {
request = request.bind(id);
}
request.fetch_all(executor).await
}
// ___ _ _
@ -489,121 +461,116 @@ where
//
pub(crate) async fn delete_note_to_note_relationship<'a, E>(
executor: E,
parent_id: &str,
note_id: &str,
executor: E,
parent_id: &str,
note_id: &str,
) -> SqlResult<()>
where
E: Executor<'a, Database = Sqlite>,
E: Executor<'a, Database = Sqlite>,
{
let delete_note_to_note_relationship_sql = concat!(
"DELETE FROM note_relationships ",
"WHERE parent_id = ? and note_id = ? "
);
let delete_note_to_note_relationship_sql = concat!(
"DELETE FROM note_relationships ",
"WHERE parent_id = ? and note_id = ? "
);
let count = sqlx::query(delete_note_to_note_relationship_sql)
.bind(parent_id)
.bind(note_id)
.execute(executor)
.await?
.rows_affected();
let count = sqlx::query(delete_note_to_note_relationship_sql)
.bind(parent_id)
.bind(note_id)
.execute(executor)
.await?
.rows_affected();
match count {
1 => Ok(()),
_ => Err(sqlx::Error::RowNotFound),
}
match count {
1 => Ok(()),
_ => Err(sqlx::Error::RowNotFound),
}
}
pub(crate) async fn delete_note_to_page_relationships<'a, E>(
executor: E,
note_id: &str,
) -> SqlResult<()>
pub(crate) async fn delete_note_to_page_relationships<'a, E>(executor: E, note_id: &str) -> SqlResult<()>
where
E: Executor<'a, Database = Sqlite>,
E: Executor<'a, Database = Sqlite>,
{
lazy_static! {
static ref DELETE_NOTE_TO_PAGE_RELATIONSHIPS_SQL: String = format!(
"DELETE FROM note_relationships WHERE kind in ('{}', '{}') AND parent_id = ?;",
PageRelationshipKind::Page.to_string(),
PageRelationshipKind::Unacked.to_string()
);
}
lazy_static! {
static ref DELETE_NOTE_TO_PAGE_RELATIONSHIPS_SQL: String = format!(
"DELETE FROM note_relationships WHERE kind in ('{}', '{}') AND parent_id = ?;",
PageRelationshipKind::Page.to_string(),
PageRelationshipKind::Unacked.to_string()
);
}
let _ = sqlx::query(&DELETE_NOTE_TO_PAGE_RELATIONSHIPS_SQL)
.bind(note_id)
.execute(executor)
.await?;
Ok(())
let _ = sqlx::query(&DELETE_NOTE_TO_PAGE_RELATIONSHIPS_SQL)
.bind(note_id)
.execute(executor)
.await?;
Ok(())
}
pub(crate) async fn delete_note<'a, E>(executor: E, note_id: &str) -> SqlResult<()>
where
E: Executor<'a, Database = Sqlite>,
E: Executor<'a, Database = Sqlite>,
{
let delete_note_sql = "DELETE FROM notes WHERE note_id = ?";
let delete_note_sql = "DELETE FROM notes WHERE note_id = ?";
let count = sqlx::query(delete_note_sql)
.bind(note_id)
.execute(executor)
.await?
.rows_affected();
let count = sqlx::query(delete_note_sql)
.bind(note_id)
.execute(executor)
.await?
.rows_affected();
match count {
1 => Ok(()),
_ => Err(sqlx::Error::RowNotFound),
}
match count {
1 => Ok(()),
_ => Err(sqlx::Error::RowNotFound),
}
}
// After removing a note, recalculate the position of all notes under
// the parent note, such that there order is now completely
// sequential.
pub(crate) async fn close_hole_for_deleted_note<'a, E>(
executor: E,
parent_id: &str,
location: i64,
pub(crate) async fn close_hole_for_deleted_note_relationship<'a, E>(
executor: E,
parent_id: &str,
location: i64,
) -> SqlResult<()>
where
E: Executor<'a, Database = Sqlite>,
E: Executor<'a, Database = Sqlite>,
{
let close_hole_for_deleted_note_sql = concat!(
"UPDATE note_relationships ",
"SET location = location - 1 ",
"WHERE location > ? and parent_id = ?;"
);
let close_hole_for_deleted_note_sql = concat!(
"UPDATE note_relationships ",
"SET location = location - 1 ",
"WHERE location > ? and parent_id = ?;"
);
let _ = sqlx::query(close_hole_for_deleted_note_sql)
.bind(&location)
.bind(parent_id)
.execute(executor)
.await?;
Ok(())
let _ = sqlx::query(close_hole_for_deleted_note_sql)
.bind(&location)
.bind(parent_id)
.execute(executor)
.await?;
Ok(())
}
// Given a list of references found in the content, generate the
// references that do not previously exist, returning all found
// references. NOTE: The function signature for this is for a
// transaction, and uses a nested transaction.
pub(crate) async fn validate_or_generate_all_found_references(
txi: &mut Transaction<'_, Sqlite>,
references: &[String]
txi: &mut Transaction<'_, Sqlite>,
references: &[String],
) -> SqlResult<Vec<String>> {
let mut tx = txi.begin().await?;
let mut tx = txi.begin().await?;
let found_references =
find_all_page_from_list_of_references(&mut tx, &references).await?;
let new_references = diff_references(&references, &found_references);
let mut new_page: Vec<NewNote> = vec![];
for one_reference in new_references.iter() {
let slug = generate_slug(&mut tx, one_reference).await?;
new_page.push(create_page(&one_reference, &slug));
}
let _ = bulk_insert_notes(&mut tx, &new_page).await?;
let found_references = find_all_page_from_list_of_references(&mut tx, &references).await?;
let new_references = diff_references(&references, &found_references);
let mut new_page: Vec<NewNote> = vec![];
for one_reference in new_references.iter() {
let slug = generate_slug(&mut tx, one_reference).await?;
new_page.push(create_page(&one_reference, &slug));
}
let _ = insert_bulk_notes(&mut tx, &new_page).await?;
let mut all_reference_ids: Vec<String> = found_references.iter().map(|r| r.id.clone()).collect();
all_reference_ids.append(&mut new_page.iter().map(|r| r.id.clone()).collect());
tx.commit().await?;
Ok(all_reference_ids)
let mut all_reference_ids: Vec<String> = found_references.iter().map(|r| r.id.clone()).collect();
all_reference_ids.append(&mut new_page.iter().map(|r| r.id.clone()).collect());
tx.commit().await?;
Ok(all_reference_ids)
}
// __ __ _
@ -616,13 +583,12 @@ pub(crate) async fn validate_or_generate_all_found_references(
pub(crate) async fn count_existing_note_relationships<'a, E>(executor: E, note_id: &str) -> SqlResult<i64>
where
E: Executor<'a, Database = Sqlite>,
E: Executor<'a, Database = Sqlite>,
{
let count_existing_note_relationships_sql =
"SELECT COUNT(*) as count FROM note_relationships WHERE note_id = ?;";
let count: RowCount = sqlx::query_as(&count_existing_note_relationships_sql)
.bind(note_id)
.fetch_one(executor)
.await?;
Ok(count.count)
let count_existing_note_relationships_sql = "SELECT COUNT(*) as count FROM note_relationships WHERE note_id = ?;";
let count: RowCount = sqlx::query_as(&count_existing_note_relationships_sql)
.bind(note_id)
.fetch_one(executor)
.await?;
Ok(count.count)
}

333
server/nm-store/src/store/store.rs
View File

@ -69,204 +69,187 @@ pub type NoteResult<T> = core::result::Result<T, NoteStoreError>;
// (box).
impl NoteStore {
/// Initializes a new instance of the note store. Note that the
/// note store holds an Arc internally; this code is (I think)
/// safe to Send.
pub async fn new(url: &str) -> NoteResult<Self> {
let pool = SqlitePool::connect(url).await?;
Ok(NoteStore(Arc::new(pool)))
}
/// Erase all the data in the database and restore it
/// to its original empty form. Do not use unless you
/// really, really want that to happen.
pub async fn reset_database(&self) -> NoteResult<()> {
reset_database(&*self.0)
.await
.map_err(NoteStoreError::DBError)
}
/// Initializes a new instance of the note store. Note that the
/// note store holds an Arc internally; this code is (I think)
/// safe to Send.
pub async fn new(url: &str) -> NoteResult<Self> {
let pool = SqlitePool::connect(url).await?;
Ok(NoteStore(Arc::new(pool)))
}
/// Erase all the data in the database and restore it
/// to its original empty form. Do not use unless you
/// really, really want that to happen.
pub async fn reset_database(&self) -> NoteResult<()> {
reset_database(&*self.0).await.map_err(NoteStoreError::DBError)
}
/// Fetch page by slug
///
/// Supports the use case of the user navigating to a known place
/// via a bookmark or other URL. Since the title isn't clear from
/// the slug, the slug is insufficient to generate a new page, so
/// this use case says that in the event of a failure to find the
/// requested page, return a basic NotFound.
pub async fn get_page_by_slug(&self, slug: &str) -> NoteResult<(Vec<Note>, Vec<Note>)> {
let page = select_page_by_slug(&*self.0, slug).await?;
if page.is_empty() {
return Err(NoteStoreError::NotFound);
}
/// Fetch page by slug
///
/// Supports the use case of the user navigating to a known place
/// via a bookmark or other URL. Since the title isn't clear from
/// the slug, the slug is insufficient to generate a new page, so
/// this use case says that in the event of a failure to find the
/// requested page, return a basic NotFound.
pub async fn get_page_by_slug(&self, slug: &str) -> NoteResult<(Vec<Note>, Vec<Note>)> {
let page = select_page_by_slug(&*self.0, slug).await?;
if page.is_empty() {
return Err(NoteStoreError::NotFound);
}
let note_id = &page[0].id;
let backreferences = select_backreferences_for_page(&*self.0, &note_id).await?;
Ok((page, backreferences))
}
let note_id = &page[0].id;
let backreferences = select_backreferences_for_page(&*self.0, &note_id).await?;
Ok((page, backreferences))
}
/// Fetch page by title
///
/// The most common use case: the user is navigating by requesting
/// a page. The page either exists or it doesn't. If it
/// doesn't, we go out and make it. Since we know it doesn't exist,
/// we also know no backreferences to it exist, so in that case you
/// get back two empty vecs.
pub async fn get_page_by_title(&self, title: &str) -> NoteResult<(Vec<Note>, Vec<Note>)> {
if title.len() == 0 {
return Err(NoteStoreError::NotFound);
}
/// Fetch page by title
///
/// The most common use case: the user is navigating by requesting
/// a page. The page either exists or it doesn't. If it
/// doesn't, we go out and make it. Since we know it doesn't exist,
/// we also know no backreferences to it exist, so in that case you
/// get back two empty vecs.
pub async fn get_page_by_title(&self, title: &str) -> NoteResult<(Vec<Note>, Vec<Note>)> {
if title.len() == 0 {
return Err(NoteStoreError::NotFound);
}
let page = select_page_by_title(&*self.0, title).await?;
if page.len() > 0 {
let note_id = &page[0].id;
let backreferences = select_backreferences_for_page(&*self.0, &note_id).await?;
return Ok((page, backreferences));
}
let page = select_page_by_title(&*self.0, title).await?;
if page.len() > 0 {
let note_id = &page[0].id;
let backreferences = select_backreferences_for_page(&*self.0, &note_id).await?;
return Ok((page, backreferences));
}
// Sanity check!
let references = build_references(&title);
if references.len() > 0 {
return Err(NoteStoreError::InvalidNoteStructure(
"Titles may not contain nested references.".to_string(),
));
}
// Sanity check!
let references = build_references(&title);
if references.len() > 0 {
return Err(NoteStoreError::InvalidNoteStructure(
"Titles may not contain nested references.".to_string(),
));
}
let mut tx = self.0.begin().await?;
let slug = generate_slug(&mut tx, title).await?;
let page = create_page(&title, &slug);
let _ = insert_note(&mut tx, &page).await?;
tx.commit().await?;
let mut tx = self.0.begin().await?;
let slug = generate_slug(&mut tx, title).await?;
let page = create_page(&title, &slug);
let _ = insert_note(&mut tx, &page).await?;
tx.commit().await?;
Ok((vec![Note::from(page)], vec![]))
}
Ok((vec![Note::from(page)], vec![]))
}
pub async fn add_note(
&self,
note: &NewNote,
parent_id: &str,
location: Option<i64>,
) -> NoteResult<String> {
let kind = RelationshipKind::Direct;
let new_id = self.insert_note(note, parent_id, location, kind).await?;
Ok(new_id)
}
pub async fn add_note(&self, note: &NewNote, parent_id: &str, location: Option<i64>) -> NoteResult<String> {
let kind = RelationshipKind::Direct;
let new_id = self.insert_note(note, parent_id, location, kind).await?;
Ok(new_id)
}
/// Move a note from one location to another.
pub async fn move_note(
&self,
note_id: &str,
old_parent_id: &str,
new_parent_id: &str,
new_location: i64,
) -> NoteResult<()> {
let mut tx = self.0.begin().await?;
/// Move a note from one location to another.
pub async fn move_note(
&self,
note_id: &str,
old_parent_id: &str,
new_parent_id: &str,
new_location: i64,
) -> NoteResult<()> {
let mut tx = self.0.begin().await?;
let old_note = select_note_to_note_relationship(&mut tx, &old_parent_id, &note_id).await?;
let old_note_location = old_note.location;
let old_note_kind = old_note.kind;
let old_note = select_note_to_note_relationship(&mut tx, &old_parent_id, &note_id).await?;
let old_note_location = old_note.location;
let old_note_kind = old_note.kind;
let _ = delete_note_to_note_relationship(&mut tx, &old_parent_id, &note_id).await?;
let _ = close_hole_for_deleted_note(&mut tx, &old_parent_id, old_note_location).await?;
let new_location = determine_max_child_location_for_note(&mut tx, &new_parent_id, Some(new_location)).await?;
let _ = make_room_for_new_note(&mut tx, &new_parent_id, new_location).await?;
let _ = insert_note_to_note_relationship(
&mut tx,
&new_parent_id,
&note_id,
new_location,
&old_note_kind,
)
.await?;
tx.commit().await?;
Ok(())
}
let _ = delete_note_to_note_relationship(&mut tx, &old_parent_id, &note_id).await?;
let _ = close_hole_for_deleted_note_relationship(&mut tx, &old_parent_id, old_note_location).await?;
let new_location = determine_max_child_location_for_note(&mut tx, &new_parent_id, Some(new_location)).await?;
let _ = make_room_for_new_note_relationship(&mut tx, &new_parent_id, new_location).await?;
let _ =
insert_note_to_note_relationship(&mut tx, &new_parent_id, &note_id, new_location, &old_note_kind).await?;
tx.commit().await?;
Ok(())
}
/// Updates a note's content. Completely rebuilds the note's
/// outgoing edge reference list every time.
pub async fn update_note_content(&self, note_id: &str, content: &str) -> NoteResult<()> {
let references = build_references(&content);
let note_id = NoteId(note_id.to_string());
/// Updates a note's content. Completely rebuilds the note's
/// outgoing edge reference list every time.
pub async fn update_note_content(&self, note_id: &str, content: &str) -> NoteResult<()> {
let references = build_references(&content);
let mut tx = self.0.begin().await?;
let _ = update_note_content(&mut tx, &note_id, &content).await?;
let _ = delete_bulk_note_to_page_relationships(&mut tx, &note_id).await?;
let known_reference_ids = validate_or_generate_all_found_references(&mut tx, &references).await?;
let _ = insert_bulk_note_to_page_relationships(&mut tx, &note_id, &known_reference_ids).await?;
tx.commit().await?;
Ok(())
}
let mut tx = self.0.begin().await?;
let _ = update_note_content(&mut tx, &note_id, &content).await?;
let _ = delete_bulk_note_to_page_relationships(&mut tx, &note_id).await?;
let known_reference_ids = validate_or_generate_all_found_references(&mut tx, &references).await?;
let _ = insert_bulk_note_to_page_relationships(&mut tx, &note_id, &known_reference_ids)
.await?;
tx.commit().await?;
Ok(())
}
/// Deletes a note. If the note's relationship drops to zero, all
/// references from that note to pages are also deleted.
pub async fn delete_note(&self, note_id: &str, note_parent_id: &str) -> NoteResult<()> {
let mut tx = self.0.begin().await?;
/// Deletes a note. If the note's relationship drops to zero, all
/// references from that note to pages are also deleted.
pub async fn delete_note(&self, note_id: &str, note_parent_id: &str) -> NoteResult<()> {
let mut tx = self.0.begin().await?;
let note_id = NoteId(note_id.to_string());
let parent_id = ParentId(note_parent_id.to_string());
let note_id = note_id.to_string();
let parent_id = note_parent_id.to_string();
if *parent_id != *note_id {
let _ = delete_note_to_note_relationship(&mut tx, &parent_id, &note_id);
}
// The big one: if zero parents report having an interest in this note, then it,
// *and any sub-relationships*, go away.
if count_existing_note_relationships(&mut tx, &note_id).await? == 0 {
let _ = delete_note_to_page_relationships(&mut tx, &note_id).await?;
let _ = delete_note(&mut tx, &note_id).await?;
}
tx.commit().await?;
Ok(())
}
if parent_id != note_id {
let _ = delete_note_to_note_relationship(&mut tx, &parent_id, &note_id);
}
// The big one: if zero parents report having an interest in this note, then it,
// *and any sub-relationships*, go away.
if count_existing_note_relationships(&mut tx, &note_id).await? == 0 {
let _ = delete_note_to_page_relationships(&mut tx, &note_id).await?;
let _ = delete_note(&mut tx, &note_id).await?;
}
tx.commit().await?;
Ok(())
}
}
// The Private stuff
impl NoteStore {
// Pretty much the most dangerous function in our system. Has to
// have ALL the error checking.
async fn insert_note(
&self,
note: &NewNote,
parent_id: &str,
location: Option<i64>,
kind: RelationshipKind,
) -> NoteResult<String> {
if let Some(location) = location {
if location < 0 {
return Err(NoteStoreError::InvalidNoteStructure(
"Add note: A negative location is not valid.".to_string(),
));
}
}
// Pretty much the most dangerous function in our system. Has to
// have ALL the error checking.
async fn insert_note(
&self,
note: &NewNote,
parent_id: &str,
location: Option<i64>,
kind: RelationshipKind,
) -> NoteResult<String> {
if let Some(location) = location {
if location < 0 {
return Err(NoteStoreError::InvalidNoteStructure(
"Add note: A negative location is not valid.".to_string(),
));
}
}
if parent_id.is_empty() {
return Err(NoteStoreError::InvalidNoteStructure(
"Add note: A parent note ID is required.".to_string(),
));
}
if parent_id.is_empty() {
return Err(NoteStoreError::InvalidNoteStructure(
"Add note: A parent note ID is required.".to_string(),
));
}
if note.id.is_empty() {
return Err(NoteStoreError::InvalidNoteStructure(
"Add note: Your note should have an id already".to_string(),
));
}
if note.id.is_empty() {
return Err(NoteStoreError::InvalidNoteStructure(
"Add note: Your note should have an id already".to_string(),
));
}
if note.content.is_empty() {
return Err(NoteStoreError::InvalidNoteStructure(
"Add note: Empty notes are not supported.".to_string(),
));
}
if note.content.is_empty() {
return Err(NoteStoreError::InvalidNoteStructure(
"Add note: Empty notes are not supported.".to_string(),
));
}
let references = build_references(&note.content);
let references = build_references(&note.content);
let mut tx = self.0.begin().await?;
let location = determine_max_child_location_for_note(&mut tx, parent_id, location).await?;
let note_id = NoteId(note.id.clone());
insert_note(&mut tx, &note).await?;
make_room_for_new_note(&mut tx, &parent_id, location).await?;
insert_note_to_note_relationship(&mut tx, &parent_id, &note_id, location, &kind).await?;
let known_reference_ids = validate_or_generate_all_found_references(&mut tx, &references).await?;
let _ = insert_bulk_note_to_page_relationships(&mut tx, &note_id, &known_reference_ids)
.await?;
tx.commit().await?;
Ok(note_id.to_string())
}
let mut tx = self.0.begin().await?;
let location = determine_max_child_location_for_note(&mut tx, parent_id, location).await?;
insert_note(&mut tx, &note).await?;
make_room_for_new_note_relationship(&mut tx, &parent_id, location).await?;
insert_note_to_note_relationship(&mut tx, &parent_id, &note.id, location, &kind).await?;
let known_reference_ids = validate_or_generate_all_found_references(&mut tx, &references).await?;
let _ = insert_bulk_note_to_page_relationships(&mut tx, &note.id, &known_reference_ids).await?;
tx.commit().await?;
Ok(note.id.to_string())
}
}