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authorBryan Newbold <bnewbold@robocracy.org>2018-12-14 22:01:14 +0800
committerBryan Newbold <bnewbold@robocracy.org>2018-12-14 22:01:16 +0800
commit595a15cfd3b3bd1e06d13f6274867616bea61ef0 (patch)
treedfb10d3da8cc16d3868723cb66a1e2dc8d49ea3f /rust/src
parente2deb74b7839aa05c1827a830ffc5e3c68ed58b4 (diff)
downloadfatcat-595a15cfd3b3bd1e06d13f6274867616bea61ef0.tar.gz
fatcat-595a15cfd3b3bd1e06d13f6274867616bea61ef0.zip
many redirect implementations
Probably should have split this commit up, it's huge: - accept the state of "redirect to a deletion", where redirect_id is Some but rev_id is None. call this a "redirect"; previously this was an invalid state. - GET for a deleted entity returns a 200 and a stub entity, not a 404 - to PUT a redirect, or to "revert" an entity to point at a specific pre-existing revision, PUT a stub entity. things are getting messy here... to detect this state, ensure the 'state' field is blank/none (this is for API usage ergonomics, where results from a GET are often re-used in a PUT or even POST) - rustfmt - maybe even more small tweaks along the way? mystery meat! Tests are in python, not rust (and a future commit)
Diffstat (limited to 'rust/src')
-rw-r--r--rust/src/api_entity_crud.rs245
-rw-r--r--rust/src/api_server.rs6
-rw-r--r--rust/src/api_wrappers.rs49
-rw-r--r--rust/src/database_models.rs4
-rw-r--r--rust/src/lib.rs6
5 files changed, 272 insertions, 38 deletions
diff --git a/rust/src/api_entity_crud.rs b/rust/src/api_entity_crud.rs
index ccbae26d..605c27ed 100644
--- a/rust/src/api_entity_crud.rs
+++ b/rust/src/api_entity_crud.rs
@@ -44,6 +44,7 @@ where
type RevRow;
// Generic Methods
+ fn from_deleted_row(ident_row: Self::IdentRow) -> Result<Self>;
fn db_get(conn: &DbConn, ident: FatCatId, hide: HideFlags) -> Result<Self>;
fn db_get_rev(conn: &DbConn, rev_id: Uuid, hide: HideFlags) -> Result<Self>;
fn db_expand(&mut self, conn: &DbConn, expand: ExpandFlags) -> Result<()>;
@@ -88,12 +89,26 @@ where
macro_rules! generic_db_get {
($ident_table:ident, $rev_table:ident) => {
fn db_get(conn: &DbConn, ident: FatCatId, hide: HideFlags) -> Result<Self> {
- let (ident, rev): (Self::IdentRow, Self::RevRow) = $ident_table::table
+ let res: Option<(Self::IdentRow, Self::RevRow)> = $ident_table::table
.find(ident.to_uuid())
.inner_join($rev_table::table)
- .first(conn)?;
-
- Self::db_from_row(conn, rev, Some(ident), hide)
+ .first(conn)
+ .optional()?;
+
+ match res {
+ Some((ident, rev)) => {
+ Self::db_from_row(conn, rev, Some(ident), hide)
+ },
+ None => {
+ // return a stub (deleted) entity if it's just deleted state
+ let ident_row: Self::IdentRow = $ident_table::table.find(ident.to_uuid()).first(conn)?;
+ if ident_row.rev_id.is_none() {
+ Self::from_deleted_row(ident_row)
+ } else {
+ bail!("unexpected condition: entity ident/rev join failed, yet row isn't in deleted state")
+ }
+ },
+ }
}
};
}
@@ -183,23 +198,77 @@ macro_rules! generic_db_update {
($ident_table: ident, $edit_table: ident) => {
fn db_update(&self, conn: &DbConn, edit_context: &EditContext, ident: FatCatId) -> Result<Self::EditRow> {
let current: Self::IdentRow = $ident_table::table.find(ident.to_uuid()).first(conn)?;
+ let no_redirect: Option<Uuid> = None;
// TODO: is this actually true? or should we allow updates in the same editgroup?
if current.is_live != true {
return Err(ErrorKind::InvalidEntityStateTransform(
"can't update an entity that doesn't exist yet".to_string()).into());
}
+ if self.state.is_none() {
+ // special case: redirect to another entity
+ if let Some(ref redirect_ident) = self.redirect {
+ let redirect_ident = FatCatId::from_str(&redirect_ident)?.to_uuid();
+ if Some(redirect_ident) == current.redirect_id {
+ return Err(ErrorKind::OtherBadRequest(
+ "redundantly redirecting entity to it's current target currently isn't supported".to_string()).into());
+ }
+ // TODO: if we get a diesel not-found here, should be a special error response?
+ let target: Self::IdentRow = $ident_table::table.find(redirect_ident).first(conn)?;
+ if target.is_live == false {
+ // there is no race condition on this check because WIP -> is_live=true is
+ // a one-way operation
+ return Err(ErrorKind::OtherBadRequest(
+ "attempted to redirect to a WIP entity".to_string()).into());
+ }
+ // Note: there is a condition where the target is already a redirect, but we
+ // don't handle that here because the state of the redirect could change before
+ // we accept this editgroup
+ let edit: Self::EditRow = insert_into($edit_table::table)
+ .values((
+ $edit_table::editgroup_id.eq(edit_context.editgroup_id.to_uuid()),
+ $edit_table::ident_id.eq(&ident.to_uuid()),
+ $edit_table::rev_id.eq(target.rev_id),
+ $edit_table::redirect_id.eq(redirect_ident),
+ $edit_table::prev_rev.eq(current.rev_id),
+ $edit_table::extra_json.eq(&self.edit_extra),
+ ))
+ .get_result(conn)?;
+ return Ok(edit)
+ }
+ // special case: revert to point to an existing revision
+ if let Some(ref rev_id) = self.revision {
+ let rev_id = Uuid::from_str(&rev_id)?;
+ if Some(rev_id) == current.rev_id {
+ return Err(ErrorKind::OtherBadRequest(
+ "reverted entity to it's current state; this isn't currently supported".to_string()).into());
+ }
+ let edit: Self::EditRow = insert_into($edit_table::table)
+ .values((
+ $edit_table::editgroup_id.eq(edit_context.editgroup_id.to_uuid()),
+ $edit_table::ident_id.eq(&ident.to_uuid()),
+ $edit_table::rev_id.eq(&rev_id),
+ $edit_table::redirect_id.eq(no_redirect),
+ $edit_table::prev_rev.eq(current.rev_id),
+ $edit_table::extra_json.eq(&self.edit_extra),
+ ))
+ .get_result(conn)?;
+ return Ok(edit)
+ }
+ }
+
+ // regular insert/update
let rev_id = self.db_insert_rev(conn)?;
let edit: Self::EditRow = insert_into($edit_table::table)
.values((
$edit_table::editgroup_id.eq(edit_context.editgroup_id.to_uuid()),
$edit_table::ident_id.eq(&ident.to_uuid()),
$edit_table::rev_id.eq(&rev_id),
- $edit_table::prev_rev.eq(current.rev_id.unwrap()),
- $edit_table::extra_json.eq(&self.extra),
+ $edit_table::redirect_id.eq(no_redirect),
+ $edit_table::prev_rev.eq(current.rev_id),
+ $edit_table::extra_json.eq(&self.edit_extra),
))
.get_result(conn)?;
-
Ok(edit)
}
}
@@ -215,11 +284,16 @@ macro_rules! generic_db_delete {
let current: Self::IdentRow = $ident_table::table.find(ident.to_uuid()).first(conn)?;
if current.is_live != true {
return Err(ErrorKind::InvalidEntityStateTransform(
- "can't update an entity that doesn't exist yet; delete edit object instead".to_string()).into());
+ "can't update an entity that doesn't exist yet; delete edit object instead"
+ .to_string(),
+ )
+ .into());
}
if current.rev_id.is_none() {
return Err(ErrorKind::InvalidEntityStateTransform(
- "entity was already deleted".to_string()).into());
+ "entity was already deleted".to_string(),
+ )
+ .into());
}
let edit: Self::EditRow = insert_into($edit_table::table)
.values((
@@ -290,7 +364,9 @@ macro_rules! generic_db_delete_edit {
.get_results(conn)?;
if accepted_rows.len() != 0 {
return Err(ErrorKind::EditgroupAlreadyAccepted(
- "attempted to delete an already accepted edit".to_string()).into());
+ "attempted to delete an already accepted edit".to_string(),
+ )
+ .into());
}
diesel::delete($edit_table::table.filter($edit_table::id.eq(edit_id))).execute(conn)?;
Ok(())
@@ -366,6 +442,29 @@ macro_rules! generic_db_accept_edits_batch {
))
.bind::<diesel::sql_types::Uuid, _>(editgroup_id.to_uuid())
.execute(conn)?;
+ // NOTE: all the following can be skipped for accepts that are all inserts (which I
+ // guess we only know for batch inserts with auto-accept?)
+
+ // update any/all redirects for updated entities
+ let _redir_count = diesel::sql_query(format!(
+ "
+ UPDATE {entity}_ident
+ SET
+ rev_id = {entity}_edit.rev_id
+ FROM {entity}_edit
+ WHERE
+ {entity}_ident.redirect_id = {entity}_edit.ident_id
+ AND {entity}_edit.editgroup_id = $1",
+ entity = $entity_name_str
+ ))
+ .bind::<diesel::sql_types::Uuid, _>(editgroup_id.to_uuid())
+ .execute(conn)?;
+ // TODO: backwards multiple redirect: if we redirected any entities to targets in this
+ // edit, then we need to update any redirects to *current* entities to *target*
+ // entities
+ // TODO: forward multiple redirect: if we redirected any entities to targets in this
+ // edit, and those targets are themselves redirects, we should point to the "final"
+ // targets
Ok(count as u64)
}
};
@@ -439,6 +538,29 @@ impl EntityCrud for ContainerEntity {
generic_db_accept_edits_batch!("container");
generic_db_insert_rev!();
+ fn from_deleted_row(ident_row: Self::IdentRow) -> Result<Self> {
+ if ident_row.rev_id.is_some() {
+ bail!("called from_deleted_row with a non-deleted-state row")
+ }
+
+ Ok(ContainerEntity {
+ issnl: None,
+ wikidata_qid: None,
+ publisher: None,
+ name: None,
+ abbrev: None,
+ coden: None,
+ state: Some(ident_row.state().unwrap().shortname()),
+ ident: Some(FatCatId::from_uuid(&ident_row.id).to_string()),
+ revision: ident_row.rev_id.map(|u| u.to_string()),
+ redirect: ident_row
+ .redirect_id
+ .map(|u| FatCatId::from_uuid(&u).to_string()),
+ extra: None,
+ edit_extra: None,
+ })
+ }
+
fn db_from_row(
_conn: &DbConn,
rev_row: Self::RevRow,
@@ -523,6 +645,28 @@ impl EntityCrud for CreatorEntity {
generic_db_accept_edits_batch!("creator");
generic_db_insert_rev!();
+ fn from_deleted_row(ident_row: Self::IdentRow) -> Result<Self> {
+ if ident_row.rev_id.is_some() {
+ bail!("called from_deleted_row with a non-deleted-state row")
+ }
+
+ Ok(CreatorEntity {
+ extra: None,
+ edit_extra: None,
+ display_name: None,
+ given_name: None,
+ surname: None,
+ orcid: None,
+ wikidata_qid: None,
+ state: Some(ident_row.state().unwrap().shortname()),
+ ident: Some(FatCatId::from_uuid(&ident_row.id).to_string()),
+ revision: ident_row.rev_id.map(|u| u.to_string()),
+ redirect: ident_row
+ .redirect_id
+ .map(|u| FatCatId::from_uuid(&u).to_string()),
+ })
+ }
+
fn db_from_row(
_conn: &DbConn,
rev_row: Self::RevRow,
@@ -604,6 +748,30 @@ impl EntityCrud for FileEntity {
generic_db_accept_edits_batch!("file");
generic_db_insert_rev!();
+ fn from_deleted_row(ident_row: Self::IdentRow) -> Result<Self> {
+ if ident_row.rev_id.is_some() {
+ bail!("called from_deleted_row with a non-deleted-state row")
+ }
+
+ Ok(FileEntity {
+ sha1: None,
+ sha256: None,
+ md5: None,
+ size: None,
+ urls: None,
+ mimetype: None,
+ releases: None,
+ state: Some(ident_row.state().unwrap().shortname()),
+ ident: Some(FatCatId::from_uuid(&ident_row.id).to_string()),
+ revision: ident_row.rev_id.map(|u| u.to_string()),
+ redirect: ident_row
+ .redirect_id
+ .map(|u| FatCatId::from_uuid(&u).to_string()),
+ extra: None,
+ edit_extra: None,
+ })
+ }
+
fn db_from_row(
conn: &DbConn,
rev_row: Self::RevRow,
@@ -742,6 +910,46 @@ impl EntityCrud for ReleaseEntity {
generic_db_accept_edits_batch!("release");
generic_db_insert_rev!();
+ fn from_deleted_row(ident_row: Self::IdentRow) -> Result<Self> {
+ if ident_row.rev_id.is_some() {
+ bail!("called from_deleted_row with a non-deleted-state row")
+ }
+
+ Ok(ReleaseEntity {
+ title: None,
+ release_type: None,
+ release_status: None,
+ release_date: None,
+ doi: None,
+ pmid: None,
+ pmcid: None,
+ isbn13: None,
+ core_id: None,
+ wikidata_qid: None,
+ volume: None,
+ issue: None,
+ pages: None,
+ files: None,
+ container: None,
+ container_id: None,
+ publisher: None,
+ language: None,
+ work_id: None,
+ refs: None,
+ contribs: None,
+ abstracts: None,
+
+ state: Some(ident_row.state().unwrap().shortname()),
+ ident: Some(FatCatId::from_uuid(&ident_row.id).to_string()),
+ revision: ident_row.rev_id.map(|u| u.to_string()),
+ redirect: ident_row
+ .redirect_id
+ .map(|u| FatCatId::from_uuid(&u).to_string()),
+ extra: None,
+ edit_extra: None,
+ })
+ }
+
fn db_expand(&mut self, conn: &DbConn, expand: ExpandFlags) -> Result<()> {
if expand.files {
let ident = match &self.ident {
@@ -1166,6 +1374,23 @@ impl EntityCrud for WorkEntity {
generic_db_accept_edits_batch!("work");
generic_db_insert_rev!();
+ fn from_deleted_row(ident_row: Self::IdentRow) -> Result<Self> {
+ if ident_row.rev_id.is_some() {
+ bail!("called from_deleted_row with a non-deleted-state row")
+ }
+
+ Ok(WorkEntity {
+ state: Some(ident_row.state().unwrap().shortname()),
+ ident: Some(FatCatId::from_uuid(&ident_row.id).to_string()),
+ revision: ident_row.rev_id.map(|u| u.to_string()),
+ redirect: ident_row
+ .redirect_id
+ .map(|u| FatCatId::from_uuid(&u).to_string()),
+ extra: None,
+ edit_extra: None,
+ })
+ }
+
fn db_from_row(
_conn: &DbConn,
rev_row: Self::RevRow,
diff --git a/rust/src/api_server.rs b/rust/src/api_server.rs
index 2278f64f..0961194b 100644
--- a/rust/src/api_server.rs
+++ b/rust/src/api_server.rs
@@ -53,7 +53,11 @@ pub struct Server {
pub db_pool: ConnectionPool,
}
-pub fn get_release_files(id: FatCatId, hide_flags: HideFlags, conn: &DbConn) -> Result<Vec<FileEntity>> {
+pub fn get_release_files(
+ id: FatCatId,
+ hide_flags: HideFlags,
+ conn: &DbConn,
+) -> Result<Vec<FileEntity>> {
let rows: Vec<(FileRevRow, FileIdentRow, FileReleaseRow)> = file_rev::table
.inner_join(file_ident::table)
.inner_join(file_release::table)
diff --git a/rust/src/api_wrappers.rs b/rust/src/api_wrappers.rs
index a2357fe1..c8f6b390 100644
--- a/rust/src/api_wrappers.rs
+++ b/rust/src/api_wrappers.rs
@@ -664,30 +664,31 @@ impl Api for Server {
Some(param) => HideFlags::from_str(&param).unwrap(),
};
// No transaction for GET
- let ret = match self.lookup_file_handler(&md5, &sha1, &sha256, expand_flags, hide_flags, &conn) {
- Ok(entity) => LookupFileResponse::FoundEntity(entity),
- Err(Error(ErrorKind::Diesel(::diesel::result::Error::NotFound), _)) => {
- LookupFileResponse::NotFound(ErrorResponse {
- message: format!("Not found: {:?} / {:?} / {:?}", md5, sha1, sha256),
- })
- }
- Err(Error(ErrorKind::MalformedExternalId(e), _)) => {
- LookupFileResponse::BadRequest(ErrorResponse {
- message: e.to_string(),
- })
- }
- Err(Error(ErrorKind::MissingOrMultipleExternalId(e), _)) => {
- LookupFileResponse::BadRequest(ErrorResponse {
- message: e.to_string(),
- })
- }
- Err(e) => {
- error!("{}", e);
- LookupFileResponse::BadRequest(ErrorResponse {
- message: e.to_string(),
- })
- }
- };
+ let ret =
+ match self.lookup_file_handler(&md5, &sha1, &sha256, expand_flags, hide_flags, &conn) {
+ Ok(entity) => LookupFileResponse::FoundEntity(entity),
+ Err(Error(ErrorKind::Diesel(::diesel::result::Error::NotFound), _)) => {
+ LookupFileResponse::NotFound(ErrorResponse {
+ message: format!("Not found: {:?} / {:?} / {:?}", md5, sha1, sha256),
+ })
+ }
+ Err(Error(ErrorKind::MalformedExternalId(e), _)) => {
+ LookupFileResponse::BadRequest(ErrorResponse {
+ message: e.to_string(),
+ })
+ }
+ Err(Error(ErrorKind::MissingOrMultipleExternalId(e), _)) => {
+ LookupFileResponse::BadRequest(ErrorResponse {
+ message: e.to_string(),
+ })
+ }
+ Err(e) => {
+ error!("{}", e);
+ LookupFileResponse::BadRequest(ErrorResponse {
+ message: e.to_string(),
+ })
+ }
+ };
Box::new(futures::done(Ok(ret)))
}
diff --git a/rust/src/database_models.rs b/rust/src/database_models.rs
index a7076e09..82088f28 100644
--- a/rust/src/database_models.rs
+++ b/rust/src/database_models.rs
@@ -14,7 +14,7 @@ use uuid::Uuid;
pub enum EntityState {
WorkInProgress,
Active(Uuid),
- Redirect(Uuid, Uuid),
+ Redirect(Uuid, Option<Uuid>),
Deleted,
}
@@ -111,7 +111,7 @@ macro_rules! entity_structs {
}
match (self.redirect_id, self.rev_id) {
(None, None) => Ok(EntityState::Deleted),
- (Some(redir), Some(rev)) => Ok(EntityState::Redirect(redir, rev)),
+ (Some(redir), rev) => Ok(EntityState::Redirect(redir, rev)),
(None, Some(rev)) => Ok(EntityState::Active(rev)),
_ => bail!("Invalid EntityIdentRow state"),
}
diff --git a/rust/src/lib.rs b/rust/src/lib.rs
index ab293fa9..b7f1817a 100644
--- a/rust/src/lib.rs
+++ b/rust/src/lib.rs
@@ -1,5 +1,5 @@
#![allow(proc_macro_derive_resolution_fallback)]
-#![recursion_limit="128"]
+#![recursion_limit = "128"]
extern crate chrono;
extern crate fatcat_api_spec;
@@ -67,6 +67,10 @@ pub mod errors {
description("Invalid Entity State Transform")
display("tried to mutate an entity which was not in an appropriate state: {}", message)
}
+ OtherBadRequest(message: String) {
+ description("catch-all error for bad or unallowed requests")
+ display("broke a constraint or made an otherwise invalid request: {}", message)
+ }
}
}
}