rust: base32 encoded idents

7 files changed, 137 insertions, 89 deletions

diff --git a/rust/src/api_helpers.rs b/rust/src/api_helpers.rs
index 62fc4569..1ee08c76 100644
--- a/rust/src/api_helpers.rs
+++ b/rust/src/api_helpers.rs
@@ -1,8 +1,10 @@
+use data_encoding::BASE32_NOPAD;
 use database_models::*;
 use database_schema::*;
 use diesel;
 use diesel::prelude::*;
 use errors::*;
+use uuid::Uuid;
 
 pub fn get_or_create_editgroup(editor_id: i64, conn: &PgConnection) -> Result<i64> {
     // check for current active
@@ -85,3 +87,22 @@ pub fn accept_editgroup(editgroup_id: i64, conn: &PgConnection) -> Result<Change
         Ok(entry)
     })
 }
+
+/// Convert fatcat IDs (base32 strings) to UUID
+pub fn fcid2uuid(fcid: &str) -> Result<Uuid> {
+    if fcid.len() != 26 {
+        return Err(ErrorKind::InvalidFatcatId(fcid.to_string()).into());
+    }
+    let mut raw = vec![0; 16];
+    BASE32_NOPAD
+        .decode_mut(fcid.to_uppercase().as_bytes(), &mut raw)
+        .map_err(|_dp| ErrorKind::InvalidFatcatId(fcid.to_string()))?;
+    // unwrap() is safe here, because we know raw is always 16 bytes
+    Ok(Uuid::from_bytes(&raw).unwrap())
+}
+
+/// Convert UUID to fatcat ID string (base32 encoded)
+pub fn uuid2fcid(id: &Uuid) -> String {
+    let raw = id.as_bytes();
+    BASE32_NOPAD.encode(raw).to_lowercase()
+}
diff --git a/rust/src/api_server.rs b/rust/src/api_server.rs
index bd211d1f..b7b19a85 100644
--- a/rust/src/api_server.rs
+++ b/rust/src/api_server.rs
@@ -1,7 +1,7 @@
 //! API endpoint handlers
 
 use ConnectionPool;
-use api_helpers::{get_or_create_editgroup, accept_editgroup};
+use api_helpers::{accept_editgroup, get_or_create_editgroup, fcid2uuid, uuid2fcid};
 use chrono;
 use database_models::*;
 use database_schema::{changelog, container_edit, container_ident, container_rev, creator_edit,
@@ -40,7 +40,7 @@ macro_rules! entity_history_handler {
             limit: Option<i64>,
         ) -> Result<Vec<EntityHistoryEntry>> {
             let conn = self.db_pool.get().expect("db_pool error");
-            let id = uuid::Uuid::parse_str(&id)?;
+            let id = fcid2uuid(&id)?;
             let limit = limit.unwrap_or(50);
 
             let rows: Vec<(EditgroupRow, ChangelogRow, $edit_row_type)> = editgroup::table
@@ -86,8 +86,8 @@ fn container_row2entity(
     let (state, ident_id, redirect_id) = match ident {
         Some(i) => (
             Some(i.state().unwrap().shortname()),
-            Some(i.id.to_string()),
-            i.redirect_id.map(|u| u.to_string()),
+            Some(uuid2fcid(&i.id)),
+            i.redirect_id.map(|u| uuid2fcid(&u)),
         ),
         None => (None, None, None),
     };
@@ -110,8 +110,8 @@ fn creator_row2entity(ident: Option<CreatorIdentRow>, rev: CreatorRevRow) -> Res
     let (state, ident_id, redirect_id) = match ident {
         Some(i) => (
             Some(i.state().unwrap().shortname()),
-            Some(i.id.to_string()),
-            i.redirect_id.map(|u| u.to_string()),
+            Some(uuid2fcid(&i.id)),
+            i.redirect_id.map(|u| uuid2fcid(&u)),
         ),
         None => (None, None, None),
     };
@@ -137,8 +137,8 @@ fn file_row2entity(
     let (state, ident_id, redirect_id) = match ident {
         Some(i) => (
             Some(i.state().unwrap().shortname()),
-            Some(i.id.to_string()),
-            i.redirect_id.map(|u| u.to_string()),
+            Some(uuid2fcid(&i.id)),
+            i.redirect_id.map(|u| uuid2fcid(&u)),
         ),
         None => (None, None, None),
     };
@@ -147,7 +147,7 @@ fn file_row2entity(
         .filter(file_release::file_rev.eq(rev.id))
         .get_results(conn)?
         .iter()
-        .map(|r: &FileReleaseRow| r.target_release_ident_id.to_string())
+        .map(|r: &FileReleaseRow| uuid2fcid(&r.target_release_ident_id))
         .collect();
 
     Ok(FileEntity {
@@ -175,8 +175,8 @@ fn release_row2entity(
     let (state, ident_id, redirect_id) = match ident {
         Some(i) => (
             Some(i.state().unwrap().shortname()),
-            Some(i.id.to_string()),
-            i.redirect_id.map(|u| u.to_string()),
+            Some(uuid2fcid(&i.id)),
+            i.redirect_id.map(|u| uuid2fcid(&u)),
         ),
         None => (None, None, None),
     };
@@ -195,7 +195,7 @@ fn release_row2entity(
             year: r.year.clone(),
             title: r.title.clone(),
             locator: r.locator.clone(),
-            target_release_id: r.target_release_ident_id.map(|v| v.to_string()),
+            target_release_id: r.target_release_ident_id.map(|v| uuid2fcid(&v)),
         })
         .collect();
 
@@ -209,7 +209,7 @@ fn release_row2entity(
             index: c.index,
             role: c.role.clone(),
             raw: c.raw.clone(),
-            creator_id: c.creator_ident_id.map(|v| v.to_string()),
+            creator_id: c.creator_ident_id.map(|v| uuid2fcid(&v)),
         })
         .collect();
 
@@ -224,10 +224,10 @@ fn release_row2entity(
         volume: rev.volume,
         issue: rev.issue,
         pages: rev.pages,
-        container_id: rev.container_ident_id.map(|u| u.to_string()),
+        container_id: rev.container_ident_id.map(|u| uuid2fcid(&u)),
         publisher: rev.publisher,
         language: rev.language,
-        work_id: Some(rev.work_ident_id.to_string()),
+        work_id: Some(uuid2fcid(&rev.work_ident_id)),
         refs: Some(refs),
         contribs: Some(contribs),
         state: state,
@@ -243,8 +243,8 @@ fn work_row2entity(ident: Option<WorkIdentRow>, rev: WorkRevRow) -> Result<WorkE
     let (state, ident_id, redirect_id) = match ident {
         Some(i) => (
             Some(i.state().unwrap().shortname()),
-            Some(i.id.to_string()),
-            i.redirect_id.map(|u| u.to_string()),
+            Some(uuid2fcid(&i.id)),
+            i.redirect_id.map(|u| uuid2fcid(&u)),
         ),
         None => (None, None, None),
     };
@@ -262,7 +262,7 @@ fn work_row2entity(ident: Option<WorkIdentRow>, rev: WorkRevRow) -> Result<WorkE
 impl Server {
     pub fn get_container_handler(&self, id: String) -> Result<ContainerEntity> {
         let conn = self.db_pool.get().expect("db_pool error");
-        let id = uuid::Uuid::parse_str(&id)?;
+        let id = fcid2uuid(&id)?;
 
         // TODO: handle Deletions
         let (ident, rev): (ContainerIdentRow, ContainerRevRow) = container_ident::table
@@ -288,7 +288,7 @@ impl Server {
 
     pub fn get_creator_handler(&self, id: String) -> Result<CreatorEntity> {
         let conn = self.db_pool.get().expect("db_pool error");
-        let id = uuid::Uuid::parse_str(&id)?;
+        let id = fcid2uuid(&id)?;
 
         let (ident, rev): (CreatorIdentRow, CreatorRevRow) = creator_ident::table
             .find(id)
@@ -313,7 +313,7 @@ impl Server {
 
     pub fn get_creator_releases_handler(&self, id: String) -> Result<Vec<ReleaseEntity>> {
         let conn = self.db_pool.get().expect("db_pool error");
-        let id = uuid::Uuid::parse_str(&id)?;
+        let id = fcid2uuid(&id)?;
 
         // TODO: some kind of unique or group-by?
         let rows: Vec<(ReleaseRevRow, ReleaseIdentRow, ReleaseContribRow)> = release_rev::table
@@ -331,7 +331,7 @@ impl Server {
 
     pub fn get_file_handler(&self, id: String) -> Result<FileEntity> {
         let conn = self.db_pool.get().expect("db_pool error");
-        let id = uuid::Uuid::parse_str(&id)?;
+        let id = fcid2uuid(&id)?;
 
         let (ident, rev): (FileIdentRow, FileRevRow) = file_ident::table
             .find(id)
@@ -356,7 +356,7 @@ impl Server {
 
     pub fn get_release_handler(&self, id: String) -> Result<ReleaseEntity> {
         let conn = self.db_pool.get().expect("db_pool error");
-        let id = uuid::Uuid::parse_str(&id)?;
+        let id = fcid2uuid(&id)?;
 
         let (ident, rev): (ReleaseIdentRow, ReleaseRevRow) = release_ident::table
             .find(id)
@@ -381,7 +381,7 @@ impl Server {
 
     pub fn get_release_files_handler(&self, id: String) -> Result<Vec<FileEntity>> {
         let conn = self.db_pool.get().expect("db_pool error");
-        let id = uuid::Uuid::parse_str(&id)?;
+        let id = fcid2uuid(&id)?;
 
         let rows: Vec<(FileRevRow, FileIdentRow, FileReleaseRow)> = file_rev::table
             .inner_join(file_ident::table)
@@ -398,7 +398,7 @@ impl Server {
 
     pub fn get_work_handler(&self, id: String) -> Result<WorkEntity> {
         let conn = self.db_pool.get().expect("db_pool error");
-        let id = uuid::Uuid::parse_str(&id)?;
+        let id = fcid2uuid(&id)?;
 
         let (ident, rev): (WorkIdentRow, WorkRevRow) = work_ident::table
             .find(id)
@@ -410,7 +410,7 @@ impl Server {
 
     pub fn get_work_releases_handler(&self, id: String) -> Result<Vec<ReleaseEntity>> {
         let conn = self.db_pool.get().expect("db_pool error");
-        let id = uuid::Uuid::parse_str(&id)?;
+        let id = fcid2uuid(&id)?;
 
         let rows: Vec<(ReleaseRevRow, ReleaseIdentRow)> = release_rev::table
             .inner_join(release_ident::table)
@@ -559,7 +559,8 @@ impl Server {
                         .iter()
                         .map(|r| FileReleaseRow {
                             file_rev: edit.rev_id.unwrap(),
-                            target_release_ident_id: uuid::Uuid::parse_str(r).expect("valid UUID"),
+                            target_release_ident_id: fcid2uuid(r)
+                                .expect("invalid fatcat identifier"),
                         })
                         .collect();
                     let release_rows: Vec<FileReleaseRow> = insert_into(file_release::table)
@@ -595,7 +596,7 @@ impl Server {
         };
 
         let work_id = match entity.work_id {
-            Some(work_id) => uuid::Uuid::parse_str(&work_id)?,
+            Some(work_id) => fcid2uuid(&work_id)?,
             None => {
                 // If a work_id wasn't passed, create a new work under the current editgroup
                 let work_model = models::WorkEntity {
@@ -608,12 +609,12 @@ impl Server {
                     extra: None,
                 };
                 let new_entity = self.create_work_handler(work_model, Some(&conn))?;
-                uuid::Uuid::parse_str(&new_entity.ident)?
+                fcid2uuid(&new_entity.ident)?
             }
         };
 
         let container_id: Option<uuid::Uuid> = match entity.container_id {
-            Some(id) => Some(uuid::Uuid::parse_str(&id)?),
+            Some(id) => Some(fcid2uuid(&id)?),
             None => None,
         };
 
@@ -657,7 +658,7 @@ impl Server {
                             release_rev: edit.rev_id.unwrap(),
                             target_release_ident_id: r.target_release_id
                                 .clone()
-                                .map(|v| uuid::Uuid::parse_str(&v).expect("valid UUID")),
+                                .map(|v| fcid2uuid(&v).expect("valid fatcat identifier")),
                             index: r.index,
                             key: r.key.clone(),
                             container_title: r.container_title.clone(),
@@ -688,7 +689,7 @@ impl Server {
                             release_rev: edit.rev_id.unwrap(),
                             creator_ident_id: c.creator_id
                                 .clone()
-                                .map(|v| uuid::Uuid::parse_str(&v).expect("valid UUID")),
+                                .map(|v| fcid2uuid(&v).expect("valid fatcat identifier")),
                             index: c.index,
                             role: c.role.clone(),
                             raw: c.raw.clone(),
@@ -1005,4 +1006,3 @@ impl Server {
     entity_history_handler!(get_release_history_handler, ReleaseEditRow, release_edit);
     entity_history_handler!(get_work_history_handler, WorkEditRow, work_edit);
 }
-
diff --git a/rust/src/api_wrappers.rs b/rust/src/api_wrappers.rs
index 8651252c..e10906a8 100644
--- a/rust/src/api_wrappers.rs
+++ b/rust/src/api_wrappers.rs
@@ -1,7 +1,7 @@
 //! API endpoint handlers
 
-use errors::*;
 use api_server::Server;
+use errors::*;
 use fatcat_api::models;
 use fatcat_api::models::*;
 use fatcat_api::*;
@@ -32,6 +32,8 @@ macro_rules! wrap_entity_handlers {
                     $get_resp::NotFound(ErrorResponse { message: format!("No such entity {}: {}", stringify!($model), id) }),
                 Err(Error(ErrorKind::Uuid(e), _)) =>
                     $get_resp::BadRequest(ErrorResponse { message: e.to_string() }),
+                Err(Error(ErrorKind::InvalidFatcatId(e), _)) =>
+                    $get_resp::BadRequest(ErrorResponse { message: e.to_string() }),
                 Err(e) => {
                     error!("{}", e);
                     $get_resp::GenericError(ErrorResponse { message: e.to_string() })
@@ -52,6 +54,8 @@ macro_rules! wrap_entity_handlers {
                     $post_resp::BadRequest(ErrorResponse { message: e.to_string() }),
                 Err(Error(ErrorKind::Uuid(e), _)) =>
                     $post_resp::BadRequest(ErrorResponse { message: e.to_string() }),
+                Err(Error(ErrorKind::InvalidFatcatId(e), _)) =>
+                    $post_resp::BadRequest(ErrorResponse { message: e.to_string() }),
                 Err(e) => {
                     error!("{}", e);
                     $post_resp::GenericError(ErrorResponse { message: e.to_string() })
@@ -72,6 +76,8 @@ macro_rules! wrap_entity_handlers {
                     $post_batch_resp::BadRequest(ErrorResponse { message: e.to_string() }),
                 Err(Error(ErrorKind::Uuid(e), _)) =>
                     $post_batch_resp::BadRequest(ErrorResponse { message: e.to_string() }),
+                Err(Error(ErrorKind::InvalidFatcatId(e), _)) =>
+                    $post_batch_resp::BadRequest(ErrorResponse { message: e.to_string() }),
                 Err(e) => {
                     error!("{}", e);
                     $post_batch_resp::GenericError(ErrorResponse { message: e.to_string() })
@@ -93,6 +99,8 @@ macro_rules! wrap_entity_handlers {
                     $get_history_resp::NotFound(ErrorResponse { message: format!("No such entity {}: {}", stringify!($model), id) }),
                 Err(Error(ErrorKind::Uuid(e), _)) =>
                     $get_history_resp::BadRequest(ErrorResponse { message: e.to_string() }),
+                Err(Error(ErrorKind::InvalidFatcatId(e), _)) =>
+                    $get_history_resp::BadRequest(ErrorResponse { message: e.to_string() }),
                 Err(e) => {
                     error!("{}", e);
                     $get_history_resp::GenericError(ErrorResponse { message: e.to_string() })
@@ -259,17 +267,18 @@ impl Api for Server {
         id: i64,
         _context: &Context,
     ) -> Box<Future<Item = AcceptEditgroupResponse, Error = ApiError> + Send> {
-
         let ret = match self.accept_editgroup_handler(id) {
             Ok(()) => AcceptEditgroupResponse::MergedSuccessfully(Success {
                 message: "horray!".to_string(),
             }),
-            Err(Error(ErrorKind::Diesel(::diesel::result::Error::NotFound), _)) =>
-                AcceptEditgroupResponse::NotFound(
-                    ErrorResponse { message: format!("No such editgroup: {}", id) }),
-            Err(e) =>
-                AcceptEditgroupResponse::GenericError(
-                    ErrorResponse { message: e.to_string() }),
+            Err(Error(ErrorKind::Diesel(::diesel::result::Error::NotFound), _)) => {
+                AcceptEditgroupResponse::NotFound(ErrorResponse {
+                    message: format!("No such editgroup: {}", id),
+                })
+            }
+            Err(e) => AcceptEditgroupResponse::GenericError(ErrorResponse {
+                message: e.to_string(),
+            }),
         };
         Box::new(futures::done(Ok(ret)))
     }
@@ -298,7 +307,6 @@ impl Api for Server {
         entity: models::Editgroup,
         _context: &Context,
     ) -> Box<Future<Item = CreateEditgroupResponse, Error = ApiError> + Send> {
-
         let ret = match self.create_editgroup_handler(entity) {
             Ok(eg) =>
                 CreateEditgroupResponse::SuccessfullyCreated(eg),
diff --git a/rust/src/database_models.rs b/rust/src/database_models.rs
index 8489b336..15dffad0 100644
--- a/rust/src/database_models.rs
+++ b/rust/src/database_models.rs
@@ -1,3 +1,4 @@
+use api_helpers::uuid2fcid;
 use chrono;
 use database_schema::*;
 use errors::*;
@@ -54,8 +55,8 @@ macro_rules! entity_structs {
                 Ok(EntityEdit {
                     editgroup_id: self.editgroup_id,
                     revision: self.rev_id,
-                    redirect_ident: self.redirect_id.map(|v| v.to_string()),
-                    ident: self.ident_id.to_string(),
+                    redirect_ident: self.redirect_id.map(|v| uuid2fcid(&v)),
+                    ident: uuid2fcid(&self.ident_id),
                     edit_id: self.id,
                     extra: self.extra_json,
                 })
diff --git a/rust/src/lib.rs b/rust/src/lib.rs
index 9de94d86..86e367e4 100644
--- a/rust/src/lib.rs
+++ b/rust/src/lib.rs
@@ -33,7 +33,12 @@ mod errors {
                         Uuid(::uuid::ParseError);
                         Io(::std::io::Error) #[cfg(unix)];
                         Serde(::serde_json::Error);
-                        Base32(::data_encoding::DecodeError);
+        }
+        errors {
+            InvalidFatcatId(id: String) {
+                description("invalid fatcat identifier syntax")
+                display("invalid fatcat identifier (expect 26-char base32 encoded): {}", id)
+            }
         }
     }
 }
@@ -49,7 +54,6 @@ use dotenv::dotenv;
 use iron::middleware::AfterMiddleware;
 use iron::{Request, Response};
 use std::env;
-use data_encoding::BASE32_NOPAD;
 
 #[cfg(feature = "postgres")]
 embed_migrations!("../migrations/");
@@ -103,21 +107,3 @@ impl AfterMiddleware for XClacksOverheadMiddleware {
         Ok(res)
     }
 }
-
-/// Convert fatcat IDs (base32 strings) to UUID
-pub fn fcid2uuid(fcid: &str) -> Result<uuid::Uuid> {
-    if fcid.len() != 20 {
-        bail!("invalid fatcat ID (expecting 20-chars of base32");
-    }
-    let mut raw = vec![0; 16];
-    BASE32_NOPAD.decode_mut(fcid.to_uppercase().as_bytes(), &mut raw)
-        .map_err(|dp| dp.error)?;
-    // unwrap() is safe here, because we know raw is always 16 bytes
-    Ok(uuid::Uuid::from_bytes(&raw).unwrap())
-}
-
-/// Convert UUID to fatcat ID string (base32 encoded)
-pub fn uuid2fcid(id: &uuid::Uuid) -> String {
-    let raw = id.as_bytes();
-    BASE32_NOPAD.encode(raw).to_lowercase()
-}
diff --git a/rust/tests/test_api_server.rs b/rust/tests/test_api_server.rs
index b00d22eb..e7ac9585 100644
--- a/rust/tests/test_api_server.rs
+++ b/rust/tests/test_api_server.rs
@@ -47,7 +47,7 @@ fn test_entity_gets() {
 
     check_response(
         request::get(
-            "http://localhost:9411/v0/container/00000000-0000-0000-1111-000000000002",
+            "http://localhost:9411/v0/container/aaaaaaaaaaaaaeiraaaaaaaaai",
             headers.clone(),
             &router,
         ),
@@ -57,7 +57,7 @@ fn test_entity_gets() {
 
     check_response(
         request::get(
-            "http://localhost:9411/v0/creator/00000000-0000-0000-2222-000000000001",
+            "http://localhost:9411/v0/creator/aaaaaaaaaaaaaircaaaaaaaaae",
             headers.clone(),
             &router,
         ),
@@ -67,7 +67,7 @@ fn test_entity_gets() {
 
     check_response(
         request::get(
-            "http://localhost:9411/v0/file/00000000-0000-0000-3333-000000000002",
+            "http://localhost:9411/v0/file/aaaaaaaaaaaaamztaaaaaaaaai",
             headers.clone(),
             &router,
         ),
@@ -77,7 +77,7 @@ fn test_entity_gets() {
 
     check_response(
         request::get(
-            "http://localhost:9411/v0/release/00000000-0000-0000-4444-000000000002",
+            "http://localhost:9411/v0/release/aaaaaaaaaaaaarceaaaaaaaaai",
             headers.clone(),
             &router,
         ),
@@ -87,7 +87,7 @@ fn test_entity_gets() {
 
     check_response(
         request::get(
-            "http://localhost:9411/v0/work/00000000-0000-0000-5555-000000000002",
+            "http://localhost:9411/v0/work/aaaaaaaaaaaaavkvaaaaaaaaai",
             headers.clone(),
             &router,
         ),
@@ -102,7 +102,7 @@ fn test_entity_404() {
 
     check_response(
         request::get(
-            "http://localhost:9411/v0/creator/00000000-0000-0000-2222-999999999999",
+            "http://localhost:9411/v0/creator/aaaaaaaaaaaaairceeeeeeeeee",
             headers.clone(),
             &router,
         ),
@@ -117,7 +117,7 @@ fn test_entity_history() {
 
     check_response(
         request::get(
-            "http://localhost:9411/v0/container/00000000-0000-0000-1111-000000000002/history",
+            "http://localhost:9411/v0/container/aaaaaaaaaaaaaeiraaaaaaaaai/history",
             headers.clone(),
             &router,
         ),
@@ -127,7 +127,7 @@ fn test_entity_history() {
 
     check_response(
         request::get(
-            "http://localhost:9411/v0/creator/00000000-0000-0000-2222-000000000001/history",
+            "http://localhost:9411/v0/creator/aaaaaaaaaaaaaircaaaaaaaaae/history",
             headers.clone(),
             &router,
         ),
@@ -137,7 +137,7 @@ fn test_entity_history() {
 
     check_response(
         request::get(
-            "http://localhost:9411/v0/file/00000000-0000-0000-3333-000000000002/history",
+            "http://localhost:9411/v0/file/aaaaaaaaaaaaamztaaaaaaaaai/history",
             headers.clone(),
             &router,
         ),
@@ -147,7 +147,7 @@ fn test_entity_history() {
 
     check_response(
         request::get(
-            "http://localhost:9411/v0/release/00000000-0000-0000-4444-000000000002/history",
+            "http://localhost:9411/v0/release/aaaaaaaaaaaaarceaaaaaaaaai/history",
             headers.clone(),
             &router,
         ),
@@ -157,7 +157,7 @@ fn test_entity_history() {
 
     check_response(
         request::get(
-            "http://localhost:9411/v0/work/00000000-0000-0000-5555-000000000002/history",
+            "http://localhost:9411/v0/work/aaaaaaaaaaaaavkvaaaaaaaaai/history",
             headers.clone(),
             &router,
         ),
@@ -207,7 +207,7 @@ fn test_reverse_lookups() {
 
     check_response(
         request::get(
-            "http://localhost:9411/v0/creator/00000000-0000-0000-2222-000000000002/releases",
+            "http://localhost:9411/v0/creator/aaaaaaaaaaaaaircaaaaaaaaai/releases",
             headers.clone(),
             &router,
         ),
@@ -217,7 +217,7 @@ fn test_reverse_lookups() {
 
     check_response(
         request::get(
-            "http://localhost:9411/v0/release/00000000-0000-0000-4444-000000000002/files",
+            "http://localhost:9411/v0/release/aaaaaaaaaaaaarceaaaaaaaaai/files",
             headers.clone(),
             &router,
         ),
@@ -227,7 +227,7 @@ fn test_reverse_lookups() {
 
     check_response(
         request::get(
-            "http://localhost:9411/v0/work/00000000-0000-0000-5555-000000000002/releases",
+            "http://localhost:9411/v0/work/aaaaaaaaaaaaavkvaaaaaaaaai/releases",
             headers.clone(),
             &router,
         ),
@@ -310,8 +310,8 @@ fn test_post_file() {
                 "url": "http://archive.org/asdf.txt",
                 "mimetype": "application/pdf",
                 "releases": [
-                    "00000000-0000-0000-4444-000000000001",
-                    "00000000-0000-0000-4444-000000000002"
+                    "aaaaaaaaaaaaarceaaaaaaaaae",
+                    "aaaaaaaaaaaaarceaaaaaaaaai"
                 ],
                 "extra": { "source": "speculation" }
                 }"#,
@@ -333,7 +333,7 @@ fn test_post_release() {
             // TODO: target_release_id
             r#"{"title": "secret minimal paper",
                 "release_type": "journal-article",
-                "work_id": "00000000-0000-0000-5555-000000000001"
+                "work_id": "aaaaaaaaaaaaavkvaaaaaaaaae"
                 }"#,
             &router,
         ),
@@ -367,8 +367,8 @@ fn test_post_release() {
                 "volume": "439",
                 "issue": "IV",
                 "pages": "1-399",
-                "work_id": "00000000-0000-0000-5555-000000000002",
-                "container_id": "00000000-0000-0000-1111-000000000001",
+                "work_id": "aaaaaaaaaaaaavkvaaaaaaaaai",
+                "container_id": "aaaaaaaaaaaaaeiraaaaaaaaae",
                 "refs": [{
                         "index": 3,
                         "raw": "just a string"
@@ -378,7 +378,7 @@ fn test_post_release() {
                 "contribs": [{
                         "index": 1,
                         "raw": "textual description of contributor (aka, name)",
-                        "creator_id": "00000000-0000-0000-2222-000000000001",
+                        "creator_id": "aaaaaaaaaaaaaircaaaaaaaaae",
                         "contrib_type": "author"
                     },{
                         "raw": "shorter"
@@ -505,13 +505,21 @@ fn test_changelog() {
     let (headers, router, _conn) = setup();
 
     check_response(
-        request::get("http://localhost:9411/v0/changelog", headers.clone(), &router),
+        request::get(
+            "http://localhost:9411/v0/changelog",
+            headers.clone(),
+            &router,
+        ),
         status::Ok,
         Some("editgroup_id"),
     );
 
     check_response(
-        request::get("http://localhost:9411/v0/changelog/1", headers.clone(), &router),
+        request::get(
+            "http://localhost:9411/v0/changelog/1",
+            headers.clone(),
+            &router,
+        ),
         status::Ok,
         Some("files"),
     );
@@ -527,7 +535,11 @@ fn test_stats() {
         Some("merged_editgroups"),
     );
     check_response(
-        request::get("http://localhost:9411/v0/stats?more=yes", headers.clone(), &router),
+        request::get(
+            "http://localhost:9411/v0/stats?more=yes",
+            headers.clone(),
+            &router,
+        ),
         status::Ok,
         Some("merged_editgroups"),
     );
@@ -547,8 +559,8 @@ fn test_400() {
                 "volume": "439",
                 "issue": "IV",
                 "pages": "1-399",
-                "work_id": "00000000-0000-0000-5555-00002",
-                "container_id": "00000000-0000-0000-1111-000000001",
+                "work_id": "aaaaaaaaaaaaavkvaaaaaaaaae",
+                "container_id": "aaaaaaaaaaaaaeiraaaaaae",
                 "refs": [{
                         "index": 3,
                         "raw": "just a string"
@@ -558,7 +570,7 @@ fn test_400() {
                 "contribs": [{
                         "index": 1,
                         "raw": "textual description of contributor (aka, name)",
-                        "creator_id": "00000000-0000-0000-2222-000000000001",
+                        "creator_id": "aaaaaaaaaaaaaircaaaaaaaaae",
                         "contrib_type": "author"
                     },{
                         "raw": "shorter"
diff --git a/rust/tests/test_fcid.rs b/rust/tests/test_fcid.rs
new file mode 100644
index 00000000..c9f6c00d
--- /dev/null
+++ b/rust/tests/test_fcid.rs
@@ -0,0 +1,20 @@
+extern crate fatcat;
+extern crate uuid;
+
+use fatcat::api_helpers::{fcid2uuid, uuid2fcid};
+use uuid::Uuid;
+
+#[test]
+fn test_fcid_conversions() {
+    let test_uuid = Uuid::parse_str("86daea5b-1b6b-432a-bb67-ea97795f80fe").unwrap();
+    let test_fcid = "q3nouwy3nnbsvo3h5klxsx4a7y";
+
+    assert_eq!(test_fcid, uuid2fcid(&test_uuid));
+    assert_eq!(test_uuid, fcid2uuid(test_fcid).unwrap());
+    assert_eq!(test_uuid, fcid2uuid(&test_fcid.to_uppercase()).unwrap());
+    assert_eq!(test_uuid, fcid2uuid(&uuid2fcid(&test_uuid)).unwrap());
+
+    assert_eq!(false, fcid2uuid("asdf").is_ok());
+    assert_eq!(false, fcid2uuid("q3nouwy3nnbsvo3h5klx").is_ok());
+    assert_eq!(false, fcid2uuid("10Oouwy3nnbsvo3h5klxsx4a7y").is_ok());
+}