Use u64 range instead of usize, for better wasm32 support (#6961)

* u64 ranges

* more u64

* make clippy happy

* even more u64

* Update object_store/src/lib.rs

Co-authored-by: Andrew Lamb <andrew@nerdnetworks.org>

* Update object_store/src/lib.rs

Co-authored-by: Andrew Lamb <andrew@nerdnetworks.org>

* address comments

---------

Co-authored-by: Andrew Lamb <andrew@nerdnetworks.org>

object_store/src/azure/client.rs

@@ -1058,7 +1058,7 @@ impl TryFrom<Blob> for ObjectMeta {
         Ok(Self {
             location: Path::parse(value.name)?,
             last_modified: value.properties.last_modified,
-            size: value.properties.content_length as usize,
+            size: value.properties.content_length,
             e_tag: value.properties.e_tag,
             version: None, // For consistency with S3 and GCP which don't include this
         })

object_store/src/chunked.rs

@@ -44,7 +44,7 @@ use crate::{PutPayload, Result};
 #[derive(Debug)]
 pub struct ChunkedStore {
     inner: Arc<dyn ObjectStore>,
-    chunk_size: usize,
+    chunk_size: usize, // chunks are in memory, so we use usize not u64
 }
 
 impl ChunkedStore {
@@ -138,7 +138,7 @@ impl ObjectStore for ChunkedStore {
         })
     }
 
-    async fn get_range(&self, location: &Path, range: Range<usize>) -> Result<Bytes> {
+    async fn get_range(&self, location: &Path, range: Range<u64>) -> Result<Bytes> {
         self.inner.get_range(location, range).await
     }
 
@@ -203,8 +203,8 @@ mod tests {
 
             let mut remaining = 1001;
             while let Some(next) = s.next().await {
-                let size = next.unwrap().len();
-                let expected = remaining.min(chunk_size);
+                let size = next.unwrap().len() as u64;
+                let expected = remaining.min(chunk_size as u64);
                 assert_eq!(size, expected);
                 remaining -= expected;
             }

object_store/src/client/get.rs

@@ -67,9 +67,9 @@ impl<T: GetClient> GetClientExt for T {
 
 struct ContentRange {
     /// The range of the object returned
-    range: Range<usize>,
+    range: Range<u64>,
     /// The total size of the object being requested
-    size: usize,
+    size: u64,
 }
 
 impl ContentRange {
@@ -84,7 +84,7 @@ impl ContentRange {
         let (start_s, end_s) = range.split_once('-')?;
 
         let start = start_s.parse().ok()?;
-        let end: usize = end_s.parse().ok()?;
+        let end: u64 = end_s.parse().ok()?;
 
         Some(Self {
             size,
@@ -140,8 +140,8 @@ enum GetResultError {
 
     #[error("Requested {expected:?}, got {actual:?}")]
     UnexpectedRange {
-        expected: Range<usize>,
-        actual: Range<usize>,
+        expected: Range<u64>,
+        actual: Range<u64>,
     },
 }
 

object_store/src/client/s3.rs

@@ -66,7 +66,7 @@ pub struct ListPrefix {
 #[serde(rename_all = "PascalCase")]
 pub struct ListContents {
     pub key: String,
-    pub size: usize,
+    pub size: u64,
     pub last_modified: DateTime<Utc>,
     #[serde(rename = "ETag")]
     pub e_tag: Option<String>,

object_store/src/http/client.rs

@@ -420,7 +420,7 @@ impl MultiStatusResponse {
         })?)
     }
 
-    fn size(&self) -> Result<usize> {
+    fn size(&self) -> Result<u64> {
         let size = self
             .prop_stat
             .prop
@@ -462,7 +462,7 @@ pub(crate) struct Prop {
     last_modified: DateTime<Utc>,
 
     #[serde(rename = "getcontentlength")]
-    content_length: Option<usize>,
+    content_length: Option<u64>,
 
     #[serde(rename = "resourcetype")]
     resource_type: ResourceType,

object_store/src/integration.rs

@@ -112,7 +112,7 @@ pub async fn put_get_delete_list(storage: &DynObjectStore) {
     let range_result = storage.get_range(&location, range.clone()).await;
 
     let bytes = range_result.unwrap();
-    assert_eq!(bytes, data.slice(range.clone()));
+    assert_eq!(bytes, data.slice(range.start as usize..range.end as usize));
 
     let opts = GetOptions {
         range: Some(GetRange::Bounded(2..5)),
@@ -190,11 +190,11 @@ pub async fn put_get_delete_list(storage: &DynObjectStore) {
     let ranges = vec![0..1, 2..3, 0..5];
     let bytes = storage.get_ranges(&location, &ranges).await.unwrap();
     for (range, bytes) in ranges.iter().zip(bytes) {
-        assert_eq!(bytes, data.slice(range.clone()))
+        assert_eq!(bytes, data.slice(range.start as usize..range.end as usize));
     }
 
     let head = storage.head(&location).await.unwrap();
-    assert_eq!(head.size, data.len());
+    assert_eq!(head.size, data.len() as u64);
 
     storage.delete(&location).await.unwrap();
 
@@ -934,7 +934,7 @@ pub async fn list_with_delimiter(storage: &DynObjectStore) {
     let object = &result.objects[0];
 
     assert_eq!(object.location, expected_location);
-    assert_eq!(object.size, data.len());
+    assert_eq!(object.size, data.len() as u64);
 
     // ==================== check: prefix-list `mydb/wb/000/000/001` (partial filename doesn't match) ====================
     let prefix = Path::from("mydb/wb/000/000/001");
@@ -1085,7 +1085,7 @@ pub async fn multipart(storage: &dyn ObjectStore, multipart: &dyn MultipartStore
         .unwrap();
 
     let meta = storage.head(&path).await.unwrap();
-    assert_eq!(meta.size, chunk_size * 2);
+    assert_eq!(meta.size, chunk_size as u64 * 2);
 
     // Empty case
     let path = Path::from("test_empty_multipart");

object_store/src/lib.rs

@@ -234,7 +234,7 @@
 //!
 //! // Buffer the entire object in memory
 //! let object: Bytes = result.bytes().await.unwrap();
-//! assert_eq!(object.len(), meta.size);
+//! assert_eq!(object.len() as u64, meta.size);
 //!
 //! // Alternatively stream the bytes from object storage
 //! let stream = object_store.get(&path).await.unwrap().into_stream();
@@ -630,7 +630,7 @@ pub trait ObjectStore: std::fmt::Display + Send + Sync + Debug + 'static {
     /// in the given byte range.
     ///
     /// See [`GetRange::Bounded`] for more details on how `range` gets interpreted
-    async fn get_range(&self, location: &Path, range: Range<usize>) -> Result<Bytes> {
+    async fn get_range(&self, location: &Path, range: Range<u64>) -> Result<Bytes> {
         let options = GetOptions {
             range: Some(range.into()),
             ..Default::default()
@@ -640,7 +640,7 @@ pub trait ObjectStore: std::fmt::Display + Send + Sync + Debug + 'static {
 
     /// Return the bytes that are stored at the specified location
     /// in the given byte ranges
-    async fn get_ranges(&self, location: &Path, ranges: &[Range<usize>]) -> Result<Vec<Bytes>> {
+    async fn get_ranges(&self, location: &Path, ranges: &[Range<u64>]) -> Result<Vec<Bytes>> {
         coalesce_ranges(
             ranges,
             |range| self.get_range(location, range),
@@ -820,14 +820,14 @@ macro_rules! as_ref_impl {
                 self.as_ref().get_opts(location, options).await
             }
 
-            async fn get_range(&self, location: &Path, range: Range<usize>) -> Result<Bytes> {
+            async fn get_range(&self, location: &Path, range: Range<u64>) -> Result<Bytes> {
                 self.as_ref().get_range(location, range).await
             }
 
             async fn get_ranges(
                 &self,
                 location: &Path,
-                ranges: &[Range<usize>],
+                ranges: &[Range<u64>],
             ) -> Result<Vec<Bytes>> {
                 self.as_ref().get_ranges(location, ranges).await
             }
@@ -903,8 +903,10 @@ pub struct ObjectMeta {
     pub location: Path,
     /// The last modified time
     pub last_modified: DateTime<Utc>,
-    /// The size in bytes of the object
-    pub size: usize,
+    /// The size in bytes of the object.
+    ///
+    /// Note this is not `usize` as `object_store` supports 32-bit architectures such as WASM
+    pub size: u64,
     /// The unique identifier for the object
     ///
     /// <https://datatracker.ietf.org/doc/html/rfc9110#name-etag>
@@ -1019,7 +1021,9 @@ pub struct GetResult {
     /// The [`ObjectMeta`] for this object
     pub meta: ObjectMeta,
     /// The range of bytes returned by this request
-    pub range: Range<usize>,
+    ///
+    /// Note this is not `usize` as `object_store` supports 32-bit architectures such as WASM
+    pub range: Range<u64>,
     /// Additional object attributes
     pub attributes: Attributes,
 }
@@ -1060,7 +1064,11 @@ impl GetResult {
                             path: path.clone(),
                         })?;
 
-                    let mut buffer = Vec::with_capacity(len);
+                    let mut buffer = if let Ok(len) = len.try_into() {
+                        Vec::with_capacity(len)
+                    } else {
+                        Vec::new()
+                    };
                     file.take(len as _)
                         .read_to_end(&mut buffer)
                         .map_err(|source| local::Error::UnableToReadBytes { source, path })?;

object_store/src/limit.rs

@@ -117,12 +117,12 @@ impl<T: ObjectStore> ObjectStore for LimitStore<T> {
         Ok(permit_get_result(r, permit))
     }
 
-    async fn get_range(&self, location: &Path, range: Range<usize>) -> Result<Bytes> {
+    async fn get_range(&self, location: &Path, range: Range<u64>) -> Result<Bytes> {
         let _permit = self.semaphore.acquire().await.unwrap();
         self.inner.get_range(location, range).await
     }
 
-    async fn get_ranges(&self, location: &Path, ranges: &[Range<usize>]) -> Result<Vec<Bytes>> {
+    async fn get_ranges(&self, location: &Path, ranges: &[Range<u64>]) -> Result<Vec<Bytes>> {
         let _permit = self.semaphore.acquire().await.unwrap();
         self.inner.get_ranges(location, ranges).await
     }

object_store/src/local.rs

@@ -21,7 +21,7 @@ use std::io::{ErrorKind, Read, Seek, SeekFrom, Write};
 use std::ops::Range;
 use std::sync::Arc;
 use std::time::SystemTime;
-use std::{collections::BTreeSet, convert::TryFrom, io};
+use std::{collections::BTreeSet, io};
 use std::{collections::VecDeque, path::PathBuf};
 
 use async_trait::async_trait;
@@ -44,12 +44,6 @@ use crate::{
 /// A specialized `Error` for filesystem object store-related errors
 #[derive(Debug, thiserror::Error)]
 pub(crate) enum Error {
-    #[error("File size for {} did not fit in a usize: {}", path, source)]
-    FileSizeOverflowedUsize {
-        source: std::num::TryFromIntError,
-        path: String,
-    },
-
     #[error("Unable to walk dir: {}", source)]
     UnableToWalkDir { source: walkdir::Error },
 
@@ -83,8 +77,8 @@ pub(crate) enum Error {
     #[error("Out of range of file {}, expected: {}, actual: {}", path.display(), expected, actual)]
     OutOfRange {
         path: PathBuf,
-        expected: usize,
-        actual: usize,
+        expected: u64,
+        actual: u64,
     },
 
     #[error("Requested range was invalid")]
@@ -410,7 +404,7 @@ impl ObjectStore for LocalFileSystem {
         let path = self.path_to_filesystem(&location)?;
         maybe_spawn_blocking(move || {
             let (file, metadata) = open_file(&path)?;
-            let meta = convert_metadata(metadata, location)?;
+            let meta = convert_metadata(metadata, location);
             options.check_preconditions(&meta)?;
 
             let range = match options.range {
@@ -430,7 +424,7 @@ impl ObjectStore for LocalFileSystem {
         .await
     }
 
-    async fn get_range(&self, location: &Path, range: Range<usize>) -> Result<Bytes> {
+    async fn get_range(&self, location: &Path, range: Range<u64>) -> Result<Bytes> {
         let path = self.path_to_filesystem(location)?;
         maybe_spawn_blocking(move || {
             let (mut file, _) = open_file(&path)?;
@@ -439,7 +433,7 @@ impl ObjectStore for LocalFileSystem {
         .await
     }
 
-    async fn get_ranges(&self, location: &Path, ranges: &[Range<usize>]) -> Result<Vec<Bytes>> {
+    async fn get_ranges(&self, location: &Path, ranges: &[Range<u64>]) -> Result<Vec<Bytes>> {
         let path = self.path_to_filesystem(location)?;
         let ranges = ranges.to_vec();
         maybe_spawn_blocking(move || {
@@ -825,7 +819,7 @@ impl Drop for LocalUpload {
 pub(crate) fn chunked_stream(
     mut file: File,
     path: PathBuf,
-    range: Range<usize>,
+    range: Range<u64>,
     chunk_size: usize,
 ) -> BoxStream<'static, Result<Bytes, super::Error>> {
     futures::stream::once(async move {
@@ -847,17 +841,23 @@ pub(crate) fn chunked_stream(
                         return Ok(None);
                     }
 
-                    let to_read = remaining.min(chunk_size);
-                    let mut buffer = Vec::with_capacity(to_read);
+                    let to_read = remaining.min(chunk_size as u64);
+                    let cap = usize::try_from(to_read).map_err(|_e| Error::InvalidRange {
+                        source: InvalidGetRange::TooLarge {
+                            requested: to_read,
+                            max: usize::MAX as u64,
+                        },
+                    })?;
+                    let mut buffer = Vec::with_capacity(cap);
                     let read = (&mut file)
-                        .take(to_read as u64)
+                        .take(to_read)
                         .read_to_end(&mut buffer)
                         .map_err(|e| Error::UnableToReadBytes {
                             source: e,
                             path: path.clone(),
                         })?;
 
-                    Ok(Some((buffer.into(), (file, path, remaining - read))))
+                    Ok(Some((buffer.into(), (file, path, remaining - read as u64))))
                 })
             },
         );
@@ -867,22 +867,18 @@ pub(crate) fn chunked_stream(
     .boxed()
 }
 
-pub(crate) fn read_range(file: &mut File, path: &PathBuf, range: Range<usize>) -> Result<Bytes> {
+pub(crate) fn read_range(file: &mut File, path: &PathBuf, range: Range<u64>) -> Result<Bytes> {
     let to_read = range.end - range.start;
-    file.seek(SeekFrom::Start(range.start as u64))
-        .map_err(|source| {
-            let path = path.into();
-            Error::Seek { source, path }
-        })?;
+    file.seek(SeekFrom::Start(range.start)).map_err(|source| {
+        let path = path.into();
+        Error::Seek { source, path }
+    })?;
 
-    let mut buf = Vec::with_capacity(to_read);
-    let read = file
-        .take(to_read as u64)
-        .read_to_end(&mut buf)
-        .map_err(|source| {
-            let path = path.into();
-            Error::UnableToReadBytes { source, path }
-        })?;
+    let mut buf = Vec::with_capacity(to_read as usize);
+    let read = file.take(to_read).read_to_end(&mut buf).map_err(|source| {
+        let path = path.into();
+        Error::UnableToReadBytes { source, path }
+    })? as u64;
 
     if read != to_read {
         let error = Error::OutOfRange {
@@ -922,7 +918,7 @@ fn open_file(path: &PathBuf) -> Result<(File, Metadata)> {
 
 fn convert_entry(entry: DirEntry, location: Path) -> Result<Option<ObjectMeta>> {
     match entry.metadata() {
-        Ok(metadata) => convert_metadata(metadata, location).map(Some),
+        Ok(metadata) => Ok(Some(convert_metadata(metadata, location))),
         Err(e) => {
             if let Some(io_err) = e.io_error() {
                 if io_err.kind() == ErrorKind::NotFound {
@@ -960,20 +956,16 @@ fn get_etag(metadata: &Metadata) -> String {
     format!("{inode:x}-{mtime:x}-{size:x}")
 }
 
-fn convert_metadata(metadata: Metadata, location: Path) -> Result<ObjectMeta> {
+fn convert_metadata(metadata: Metadata, location: Path) -> ObjectMeta {
     let last_modified = last_modified(&metadata);
-    let size = usize::try_from(metadata.len()).map_err(|source| {
-        let path = location.as_ref().into();
-        Error::FileSizeOverflowedUsize { source, path }
-    })?;
 
-    Ok(ObjectMeta {
+    ObjectMeta {
         location,
         last_modified,
-        size,
+        size: metadata.len(),
         e_tag: Some(get_etag(&metadata)),
         version: None,
-    })
+    }
 }
 
 #[cfg(unix)]