Google Git
Sign in
apache/arrow-rs-object-store/refs/heads/main/./src/lib.rs
blob: d3ea9ee2c8b4ebae7515acf13fcb9502991eb3b1 [file]
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
#![cfg_attr(docsrs, feature(doc_cfg))]
#![deny(rustdoc::broken_intra_doc_links, rustdoc::bare_urls, rust_2018_idioms)]
#![warn(
missing_copy_implementations,
missing_debug_implementations,
missing_docs,
clippy::explicit_iter_loop,
clippy::future_not_send,
clippy::use_self,
clippy::clone_on_ref_ptr,
unreachable_pub
)]
//! # object_store
//!
//! This crate provides a uniform API for interacting with object
//! storage services and local files via the [`ObjectStore`]
//! trait.
//!
//! Using this crate, the same binary and code can run in multiple
//! clouds and local test environments, via a simple runtime
//! configuration change.
//!
//! # Highlights
//!
//! 1. A high-performance async API focused on providing a consistent interface
//! mirroring that of object stores such as [S3]
//!
//! 2. Production quality, leading this crate to be used in large
//! scale production systems, such as [crates.io] and [InfluxDB IOx]
//!
//! 3. Support for advanced functionality, including atomic, conditional reads
//! and writes, vectored IO, bulk deletion, and more...
//!
//! 4. Stable and predictable governance via the [Apache Arrow] project
//!
//! 5. Small dependency footprint, depending on only a small number of common crates
//!
//! Originally developed by [InfluxData] and subsequently donated
//! to [Apache Arrow].
//!
//! [Apache Arrow]: https://arrow.apache.org/
//! [InfluxData]: https://www.influxdata.com/
//! [crates.io]: https://github.com/rust-lang/crates.io
//! [ACID]: https://en.wikipedia.org/wiki/ACID
//! [S3]: https://aws.amazon.com/s3/
//!
//! # APIs
//!
//! * [`ObjectStore`]: Core object store API
//! * [`ObjectStoreExt`]: (*New in 0.13.0*) Extension trait with additional convenience methods
//!
//! # Available [`ObjectStore`] Implementations
//!
//! By default, this crate provides the following implementations:
//!
//! * Memory: [`InMemory`](memory::InMemory)
//!
//! Feature flags are used to enable support for other implementations:
//!
#![cfg_attr(
feature = "fs",
doc = "* Local filesystem: [`LocalFileSystem`](local::LocalFileSystem)"
)]
#![cfg_attr(
feature = "gcp",
doc = "* [`gcp`]: [Google Cloud Storage](https://cloud.google.com/storage/) support. See [`GoogleCloudStorageBuilder`](gcp::GoogleCloudStorageBuilder)"
)]
#![cfg_attr(
feature = "aws",
doc = "* [`aws`]: [Amazon S3](https://aws.amazon.com/s3/). See [`AmazonS3Builder`](aws::AmazonS3Builder)"
)]
#![cfg_attr(
feature = "azure",
doc = "* [`azure`]: [Azure Blob Storage](https://azure.microsoft.com/en-gb/services/storage/blobs/). See [`MicrosoftAzureBuilder`](azure::MicrosoftAzureBuilder)"
)]
#![cfg_attr(
feature = "http",
doc = "* [`http`]: [HTTP/WebDAV Storage](https://datatracker.ietf.org/doc/html/rfc2518). See [`HttpBuilder`](http::HttpBuilder)"
)]
//!
//! # Why not a Filesystem Interface?
//!
//! The [`ObjectStore`] interface is designed to mirror the APIs
//! of object stores and *not* filesystems, and thus has stateless APIs instead
//! of cursor based interfaces such as [`Read`] or [`Seek`] available in filesystems.
//!
//! This design provides the following advantages:
//!
//! * All operations are atomic, and readers cannot observe partial and/or failed writes
//! * Methods map directly to object store APIs, providing both efficiency and predictability
//! * Abstracts away filesystem and operating system specific quirks, ensuring portability
//! * Allows for functionality not native to filesystems, such as operation preconditions
//! and atomic multipart uploads
//!
//! This crate does provide [`BufReader`] and [`BufWriter`] adapters
//! which provide a more filesystem-like API for working with the
//! [`ObjectStore`] trait, however, they should be used with care
//!
//! [`BufReader`]: buffered::BufReader
//! [`BufWriter`]: buffered::BufWriter
//! [`Read`]: std::io::Read
//! [`Seek`]: std::io::Seek
//!
//! # Adapters
//!
//! [`ObjectStore`] instances can be composed with various adapters
//! which add additional functionality:
//!
//! * Rate Throttling: [`ThrottleConfig`](throttle::ThrottleConfig)
//! * Concurrent Request Limit: [`LimitStore`](limit::LimitStore)
//!
//! # Configuration System
//!
//! This crate provides a configuration system inspired by the APIs exposed by [fsspec],
//! [PyArrow FileSystem], and [Hadoop FileSystem], allowing creating a [`DynObjectStore`]
//! from a URL and an optional list of key value pairs. This provides a flexible interface
//! to support a wide variety of user-defined store configurations, with minimal additional
//! application complexity.
//!
//! ```no_run,ignore-wasm32
//! # #[cfg(feature = "aws")] {
//! # use url::Url;
//! # use object_store::{parse_url, parse_url_opts};
//! # use object_store::aws::{AmazonS3, AmazonS3Builder};
//! #
//! #
//! // Can manually create a specific store variant using the appropriate builder
//! let store: AmazonS3 = AmazonS3Builder::from_env()
//! .with_bucket_name("my-bucket").build().unwrap();
//!
//! // Alternatively can create an ObjectStore from an S3 URL
//! let url = Url::parse("s3://bucket/path").unwrap();
//! let (store, path) = parse_url(&url).unwrap();
//! assert_eq!(path.as_ref(), "path");
//!
//! // Potentially with additional options
//! let (store, path) = parse_url_opts(&url, vec![("aws_access_key_id", "...")]).unwrap();
//!
//! // Or with URLs that encode the bucket name in the URL path
//! let url = Url::parse("https://ACCOUNT_ID.r2.cloudflarestorage.com/bucket/path").unwrap();
//! let (store, path) = parse_url(&url).unwrap();
//! assert_eq!(path.as_ref(), "path");
//! # }
//! ```
//!
//! [PyArrow FileSystem]: https://arrow.apache.org/docs/python/generated/pyarrow.fs.FileSystem.html#pyarrow.fs.FileSystem.from_uri
//! [fsspec]: https://filesystem-spec.readthedocs.io/en/latest/api.html#fsspec.filesystem
//! [Hadoop FileSystem]: https://hadoop.apache.org/docs/r3.0.0/api/org/apache/hadoop/fs/FileSystem.html#get-java.net.URI-org.apache.hadoop.conf.Configuration-
//!
//! # List objects
//!
//! Use the [`ObjectStore::list`] method to iterate over objects in
//! remote storage or files in the local filesystem:
//!
//! ```ignore-wasm32
//! # use object_store::local::LocalFileSystem;
//! # use std::sync::Arc;
//! # use object_store::{path::Path, ObjectStore};
//! # use futures_util::stream::StreamExt;
//! # // use LocalFileSystem for example
//! # fn get_object_store() -> Arc<dyn ObjectStore> {
//! # Arc::new(LocalFileSystem::new())
//! # }
//! #
//! # async fn example() {
//! #
//! // create an ObjectStore
//! let object_store: Arc<dyn ObjectStore> = get_object_store();
//!
//! // Recursively list all files below the 'data' path.
//! // 1. On AWS S3 this would be the 'data/' prefix
//! // 2. On a local filesystem, this would be the 'data' directory
//! let prefix = Path::from("data");
//!
//! // Get an `async` stream of Metadata objects:
//! let mut list_stream = object_store.list(Some(&prefix));
//!
//! // Print a line about each object
//! while let Some(meta) = list_stream.next().await.transpose().unwrap() {
//! println!("Name: {}, size: {}", meta.location, meta.size);
//! }
//! # }
//! ```
//!
//! Which will print out something like the following:
//!
//! ```text
//! Name: data/file01.parquet, size: 112832
//! Name: data/file02.parquet, size: 143119
//! Name: data/child/file03.parquet, size: 100
//! ...
//! ```
//!
//! # Fetch objects
//!
//! Use the [`ObjectStoreExt::get`] / [`ObjectStore::get_opts`] method to fetch the data bytes
//! from remote storage or files in the local filesystem as a stream.
//!
//! ```ignore-wasm32
//! # use futures_util::TryStreamExt;
//! # use object_store::local::LocalFileSystem;
//! # use std::sync::Arc;
//! # use bytes::Bytes;
//! # use object_store::{path::Path, ObjectStore, ObjectStoreExt, GetResult};
//! # fn get_object_store() -> Arc<dyn ObjectStore> {
//! # Arc::new(LocalFileSystem::new())
//! # }
//! #
//! # async fn example() {
//! #
//! // Create an ObjectStore
//! let object_store: Arc<dyn ObjectStore> = get_object_store();
//!
//! // Retrieve a specific file
//! let path = Path::from("data/file01.parquet");
//!
//! // Fetch just the file metadata
//! let meta = object_store.head(&path).await.unwrap();
//! println!("{meta:?}");
//!
//! // Fetch the object including metadata
//! let result: GetResult = object_store.get(&path).await.unwrap();
//! assert_eq!(result.meta, meta);
//!
//! // Buffer the entire object in memory
//! let object: Bytes = result.bytes().await.unwrap();
//! 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();
//!
//! // Count the '0's using `try_fold` from `TryStreamExt` trait
//! let num_zeros = stream
//! .try_fold(0, |acc, bytes| async move {
//! Ok(acc + bytes.iter().filter(|b| **b == 0).count())
//! }).await.unwrap();
//!
//! println!("Num zeros in {} is {}", path, num_zeros);
//! # }
//! ```
//!
//! # Put Object
//!
//! Use the [`ObjectStoreExt::put`] method to atomically write data.
//!
//! ```ignore-wasm32
//! # use object_store::local::LocalFileSystem;
//! # use object_store::{ObjectStore, ObjectStoreExt, PutPayload};
//! # use std::sync::Arc;
//! # use object_store::path::Path;
//! # fn get_object_store() -> Arc<dyn ObjectStore> {
//! # Arc::new(LocalFileSystem::new())
//! # }
//! # async fn put() {
//! #
//! let object_store: Arc<dyn ObjectStore> = get_object_store();
//! let path = Path::from("data/file1");
//! let payload = PutPayload::from_static(b"hello");
//! object_store.put(&path, payload).await.unwrap();
//! # }
//! ```
//!
//! # Multipart Upload
//!
//! Use the [`ObjectStoreExt::put_multipart`] / [`ObjectStore::put_multipart_opts`] method to atomically write a large
//! amount of data
//!
//! ```ignore-wasm32
//! # use object_store::local::LocalFileSystem;
//! # use object_store::{ObjectStore, ObjectStoreExt, WriteMultipart};
//! # use std::sync::Arc;
//! # use bytes::Bytes;
//! # use tokio::io::AsyncWriteExt;
//! # use object_store::path::Path;
//! # fn get_object_store() -> Arc<dyn ObjectStore> {
//! # Arc::new(LocalFileSystem::new())
//! # }
//! # async fn multi_upload() {
//! #
//! let object_store: Arc<dyn ObjectStore> = get_object_store();
//! let path = Path::from("data/large_file");
//! let upload = object_store.put_multipart(&path).await.unwrap();
//! let mut write = WriteMultipart::new(upload);
//! write.write(b"hello");
//! write.finish().await.unwrap();
//! # }
//! ```
//!
//! # Vectored Read
//!
//! A common pattern, especially when reading structured datasets, is to need to fetch
//! multiple, potentially non-contiguous, ranges of a particular object.
//!
//! [`ObjectStore::get_ranges`] provides an efficient way to perform such vectored IO, and will
//! automatically coalesce adjacent ranges into an appropriate number of parallel requests.
//!
//! ```ignore-wasm32
//! # use object_store::local::LocalFileSystem;
//! # use object_store::ObjectStore;
//! # use std::sync::Arc;
//! # use bytes::Bytes;
//! # use tokio::io::AsyncWriteExt;
//! # use object_store::path::Path;
//! # fn get_object_store() -> Arc<dyn ObjectStore> {
//! # Arc::new(LocalFileSystem::new())
//! # }
//! # async fn multi_upload() {
//! #
//! let object_store: Arc<dyn ObjectStore> = get_object_store();
//! let path = Path::from("data/large_file");
//! let ranges = object_store.get_ranges(&path, &[90..100, 400..600, 0..10]).await.unwrap();
//! assert_eq!(ranges.len(), 3);
//! assert_eq!(ranges[0].len(), 10);
//! # }
//! ```
//!
//! To retrieve ranges from a versioned object, use [`ObjectStore::get_opts`] by specifying the range in the [`GetOptions`].
//!
//! ```ignore-wasm32
//! # use object_store::local::LocalFileSystem;
//! # use object_store::ObjectStore;
//! # use object_store::GetOptions;
//! # use std::sync::Arc;
//! # use bytes::Bytes;
//! # use tokio::io::AsyncWriteExt;
//! # use object_store::path::Path;
//! # fn get_object_store() -> Arc<dyn ObjectStore> {
//! # Arc::new(LocalFileSystem::new())
//! # }
//! # async fn get_range_with_options() {
//! #
//! let object_store: Arc<dyn ObjectStore> = get_object_store();
//! let path = Path::from("data/large_file");
//! let ranges = vec![90..100, 400..600, 0..10];
//! for range in ranges {
//! let opts = GetOptions::default().with_range(Some(range));
//! let data = object_store.get_opts(&path, opts).await.unwrap();
//! // Do something with the data
//! }
//! # }
//! ``````
//!
//! # Vectored Write
//!
//! When writing data it is often the case that the size of the output is not known ahead of time.
//!
//! A common approach to handling this is to bump-allocate a `Vec`, whereby the underlying
//! allocation is repeatedly reallocated, each time doubling the capacity. The performance of
//! this is suboptimal as reallocating memory will often involve copying it to a new location.
//!
//! Fortunately, as [`PutPayload`] does not require memory regions to be contiguous, it is
//! possible to instead allocate memory in chunks and avoid bump allocating. [`PutPayloadMut`]
//! encapsulates this approach
//!
//! ```ignore-wasm32
//! # use object_store::local::LocalFileSystem;
//! # use object_store::{ObjectStore, ObjectStoreExt, PutPayloadMut};
//! # use std::sync::Arc;
//! # use bytes::Bytes;
//! # use tokio::io::AsyncWriteExt;
//! # use object_store::path::Path;
//! # fn get_object_store() -> Arc<dyn ObjectStore> {
//! # Arc::new(LocalFileSystem::new())
//! # }
//! # async fn multi_upload() {
//! #
//! let object_store: Arc<dyn ObjectStore> = get_object_store();
//! let path = Path::from("data/large_file");
//! let mut buffer = PutPayloadMut::new().with_block_size(8192);
//! for _ in 0..22 {
//! buffer.extend_from_slice(&[0; 1024]);
//! }
//! let payload = buffer.freeze();
//!
//! // Payload consists of 3 separate 8KB allocations
//! assert_eq!(payload.as_ref().len(), 3);
//! assert_eq!(payload.as_ref()[0].len(), 8192);
//! assert_eq!(payload.as_ref()[1].len(), 8192);
//! assert_eq!(payload.as_ref()[2].len(), 6144);
//!
//! object_store.put(&path, payload).await.unwrap();
//! # }
//! ```
//!
//! # Conditional Fetch
//!
//! More complex object retrieval can be supported by [`ObjectStore::get_opts`].
//!
//! For example, efficiently refreshing a cache without re-fetching the entire object
//! data if the object hasn't been modified.
//!
//! ```
//! # use std::collections::btree_map::Entry;
//! # use std::collections::HashMap;
//! # use object_store::{GetOptions, GetResult, ObjectStore, ObjectStoreExt, Result, Error};
//! # use std::sync::Arc;
//! # use std::time::{Duration, Instant};
//! # use bytes::Bytes;
//! # use tokio::io::AsyncWriteExt;
//! # use object_store::path::Path;
//! struct CacheEntry {
//! /// Data returned by last request
//! data: Bytes,
//! /// ETag identifying the object returned by the server
//! e_tag: String,
//! /// Instant of last refresh
//! refreshed_at: Instant,
//! }
//!
//! /// Example cache that checks entries after 10 seconds for a new version
//! struct Cache {
//! entries: HashMap<Path, CacheEntry>,
//! store: Arc<dyn ObjectStore>,
//! }
//!
//! impl Cache {
//! pub async fn get(&mut self, path: &Path) -> Result<Bytes> {
//! Ok(match self.entries.get_mut(path) {
//! Some(e) => match e.refreshed_at.elapsed() < Duration::from_secs(10) {
//! true => e.data.clone(), // Return cached data
//! false => { // Check if remote version has changed
//! let opts = GetOptions::new().with_if_none_match(Some(e.e_tag.clone()));
//! match self.store.get_opts(&path, opts).await {
//! Ok(d) => e.data = d.bytes().await?,
//! Err(Error::NotModified { .. }) => {} // Data has not changed
//! Err(e) => return Err(e),
//! };
//! e.refreshed_at = Instant::now();
//! e.data.clone()
//! }
//! },
//! None => { // Not cached, fetch data
//! let get = self.store.get(&path).await?;
//! let e_tag = get.meta.e_tag.clone();
//! let data = get.bytes().await?;
//! if let Some(e_tag) = e_tag {
//! let entry = CacheEntry {
//! e_tag,
//! data: data.clone(),
//! refreshed_at: Instant::now(),
//! };
//! self.entries.insert(path.clone(), entry);
//! }
//! data
//! }
//! })
//! }
//! }
//! ```
//!
//! # Conditional Put
//!
//! The default behaviour when writing data is to upsert any existing object at the given path,
//! overwriting any previous value. More complex behaviours can be achieved using [`PutMode`], and
//! can be used to build [Optimistic Concurrency Control] based transactions. This facilitates
//! building metadata catalogs, such as [Apache Iceberg] or [Delta Lake], directly on top of object
//! storage, without relying on a separate DBMS.
//!
//! ```
//! # use object_store::{Error, ObjectStore, ObjectStoreExt, PutMode, UpdateVersion};
//! # use std::sync::Arc;
//! # use bytes::Bytes;
//! # use tokio::io::AsyncWriteExt;
//! # use object_store::memory::InMemory;
//! # use object_store::path::Path;
//! # fn get_object_store() -> Arc<dyn ObjectStore> {
//! # Arc::new(InMemory::new())
//! # }
//! # fn do_update(b: Bytes) -> Bytes {b}
//! # async fn conditional_put() {
//! let store = get_object_store();
//! let path = Path::from("test");
//!
//! // Perform a conditional update on path
//! loop {
//! // Perform get request
//! let r = store.get(&path).await.unwrap();
//!
//! // Save version information fetched
//! let version = UpdateVersion {
//! e_tag: r.meta.e_tag.clone(),
//! version: r.meta.version.clone(),
//! };
//!
//! // Compute new version of object contents
//! let new = do_update(r.bytes().await.unwrap());
//!
//! // Attempt to commit transaction
//! match store.put_opts(&path, new.into(), PutMode::Update(version).into()).await {
//! Ok(_) => break, // Successfully committed
//! Err(Error::Precondition { .. }) => continue, // Object has changed, try again
//! Err(e) => panic!("{e}")
//! }
//! }
//! # }
//! ```
//!
//! [Optimistic Concurrency Control]: https://en.wikipedia.org/wiki/Optimistic_concurrency_control
//! [Apache Iceberg]: https://iceberg.apache.org/
//! [Delta Lake]: https://delta.io/
//!
//! # TLS Certificates
//!
//! Stores that use HTTPS/TLS (this is true for most cloud stores) can choose the source of their [CA]
//! certificates. By default the system-bundled certificates are used (see
//! [`rustls-native-certs`]). The `tls-webpki-roots` feature switch can be used to also bundle Mozilla's
//! root certificates with the library/application (see [`webpki-roots`]).
//!
//! [CA]: https://en.wikipedia.org/wiki/Certificate_authority
//! [`rustls-native-certs`]: https://crates.io/crates/rustls-native-certs/
//! [`webpki-roots`]: https://crates.io/crates/webpki-roots
//!
//! # Customizing HTTP Clients
//!
//! Many [`ObjectStore`] implementations permit customization of the HTTP client via
//! the [`HttpConnector`] trait and utilities in the [`client`] module.
//! Examples include injecting custom HTTP headers or using an alternate
//! tokio Runtime I/O requests.
//!
//! [`HttpConnector`]: client::HttpConnector
#[cfg(feature = "aws")]
pub mod aws;
#[cfg(feature = "azure")]
pub mod azure;
#[cfg(feature = "tokio")]
pub mod buffered;
#[cfg(not(target_arch = "wasm32"))]
pub mod chunked;
pub mod delimited;
#[cfg(feature = "gcp")]
pub mod gcp;
#[cfg(feature = "http")]
pub mod http;
#[cfg(feature = "tokio")]
pub mod limit;
#[cfg(all(feature = "fs", not(target_arch = "wasm32")))]
pub mod local;
pub mod memory;
pub mod path;
pub mod prefix;
pub mod registry;
#[cfg(feature = "cloud")]
pub mod signer;
#[cfg(feature = "tokio")]
pub mod throttle;
#[cfg(feature = "cloud")]
pub mod client;
#[cfg(feature = "cloud")]
pub use client::{
ClientConfigKey, ClientOptions, CredentialProvider, StaticCredentialProvider,
backoff::BackoffConfig, retry::RetryConfig,
};
#[cfg(all(feature = "cloud", not(target_arch = "wasm32")))]
pub use client::Certificate;
#[cfg(feature = "cloud")]
mod config;
mod tags;
pub use tags::TagSet;
pub mod list;
pub mod multipart;
mod parse;
mod payload;
mod upload;
mod util;
mod attributes;
#[cfg(any(feature = "integration", test))]
pub mod integration;
pub use attributes::*;
pub use parse::{ObjectStoreScheme, parse_url, parse_url_opts};
pub use payload::*;
pub use upload::*;
pub use util::{GetRange, OBJECT_STORE_COALESCE_DEFAULT, coalesce_ranges, collect_bytes};
// Re-export HTTP types used in public API
pub use ::http::{Extensions, HeaderMap, HeaderValue};
use crate::path::Path;
#[cfg(all(feature = "fs", not(target_arch = "wasm32")))]
use crate::util::maybe_spawn_blocking;
use async_trait::async_trait;
use bytes::Bytes;
use chrono::{DateTime, Utc};
use futures_util::{StreamExt, TryStreamExt, stream::BoxStream};
use std::fmt::{Debug, Formatter};
use std::ops::Range;
use std::sync::Arc;
/// An alias for a dynamically dispatched object store implementation.
pub type DynObjectStore = dyn ObjectStore;
/// Id type for multipart uploads.
pub type MultipartId = String;
/// Universal API for object store services.
///
/// See the [module-level documentation](crate) for a high level overview and
/// examples. See [`ObjectStoreExt`] for additional convenience methods.
///
/// # Contract
/// This trait is a contract between object store _implementations_
/// (e.g. providers, wrappers) and the `object_store` crate itself. It is
/// intended to be the minimum API required for an object store.
///
/// The [`ObjectStoreExt`] acts as an API/contract between `object_store` and
/// the store _users_ and provides additional methods that may be simpler to use
/// but overlap in functionality with [`ObjectStore`].
///
/// # Clone
/// If a store implements [`Clone`], that will only clone the handle to the underlying data. It will NOT clone/fork the
/// actual key-value data. Hence, the cloned instance and the original instance share the same state.
///
/// # Minimal Default Implementations
/// There are only a few default implementations for methods in this trait by
/// design. This was different from versions prior to `0.13.0`, which had many
/// more default implementations. Default implementations are convenient for
/// users, but error-prone for implementors as they require keeping the
/// convenience APIs correctly in sync.
///
/// As of version 0.13.0, most methods on [`ObjectStore`] must be implemented, and
/// the convenience methods have been moved to the [`ObjectStoreExt`] trait as
/// described above. See [#385] for more details.
///
/// [#385]: https://github.com/apache/arrow-rs-object-store/issues/385
///
/// # Wrappers
/// If you wrap an [`ObjectStore`] -- e.g. to add observability -- you SHOULD
/// implement all trait methods. This ensures that defaults implementations
/// that are overwritten by the wrapped store are also used by the wrapper.
/// For example:
///
/// ```ignore
/// struct MyStore {
/// ...
/// }
///
/// #[async_trait]
/// impl ObjectStore for MyStore {
/// // implement custom ranges handling
/// async fn get_ranges(
/// &self,
/// location: &Path,
/// ranges: &[Range<u64>],
/// ) -> Result<Vec<Bytes>> {
/// ...
/// }
///
/// ...
/// }
///
/// struct Wrapper {
/// inner: Arc<dyn ObjectStore>,
/// }
///
/// #[async_trait]
/// #[deny(clippy::missing_trait_methods)]
/// impl ObjectStore for Wrapper {
/// // If we would not implement this method,
/// // we would get the trait default and not
/// // use the actual implementation of `inner`.
/// async fn get_ranges(
/// &self,
/// location: &Path,
/// ranges: &[Range<u64>],
/// ) -> Result<Vec<Bytes>> {
/// ...
/// }
///
/// ...
/// }
/// ```
///
/// To automatically detect this issue, use
/// [`#[deny(clippy::missing_trait_methods)]`](https://rust-lang.github.io/rust-clippy/master/index.html#missing_trait_methods).
///
/// # Upgrade Guide for 0.13.0
///
/// Upgrading to object_store 0.13.0 from an earlier version typically involves:
///
/// 1. Add a `use` for [`ObjectStoreExt`] to solve the error
///
/// ```text
/// error[E0599]: no method named `put` found for reference `&dyn object_store::ObjectStore` in the current scope
/// --> datafusion/datasource/src/url.rs:993:14
/// ```
///
/// 2. Remove any (now) redundant implementations (such as `ObjectStore::put`) from any
/// `ObjectStore` implementations to resolve the error
///
/// ```text
/// error[E0407]: method `put` is not a member of trait `ObjectStore`
/// --> datafusion/datasource/src/url.rs:1103:9
/// |
/// ```
///
/// 3. Convert `ObjectStore::delete` to [`ObjectStore::delete_stream`] (see documentation
/// on that method for details and examples)
///
/// 4. Combine `ObjectStore::copy` and `ObjectStore::copy_if_not_exists` implementations into
/// [`ObjectStore::copy_opts`] (see documentation on that method for details and examples)
///
/// 5. Update `object_store::Error::NotImplemented` to include the name of the missing method
///
/// For example, change instances of
/// ```text
/// object_store::Error::NotImplemented
/// ```
/// to
/// ```
/// object_store::Error::NotImplemented {
/// operation: "put".to_string(),
/// implementer: "RequestCountingObjectStore".to_string(),
/// };
/// ```
///
#[async_trait]
pub trait ObjectStore: std::fmt::Display + Send + Sync + Debug + 'static {
/// Save the provided `payload` to `location` with the given options
///
/// The operation is guaranteed to be atomic, it will either successfully
/// write the entirety of `payload` to `location`, or fail. No clients
/// should be able to observe a partially written object
async fn put_opts(
&self,
location: &Path,
payload: PutPayload,
opts: PutOptions,
) -> Result<PutResult>;
/// Perform a multipart upload with options
///
/// Client should prefer [`ObjectStore::put_opts`] for small payloads, as streaming uploads
/// typically require multiple separate requests. See [`MultipartUpload`] for more information
///
/// For more advanced multipart uploads see [`MultipartStore`](multipart::MultipartStore)
async fn put_multipart_opts(
&self,
location: &Path,
opts: PutMultipartOptions,
) -> Result<Box<dyn MultipartUpload>>;
/// Perform a get request with options
///
/// ## Example
///
/// This example uses a basic local filesystem object store to get an object with a specific etag.
/// On the local filesystem, supplying an invalid etag will error.
/// Versioned object stores will return the specified object version, if it exists.
///
/// ```ignore-wasm32
/// # use object_store::local::LocalFileSystem;
/// # use tempfile::tempdir;
/// # use object_store::{path::Path, ObjectStore, ObjectStoreExt, GetOptions};
/// async fn get_opts_example() {
/// let tmp = tempdir().unwrap();
/// let store = LocalFileSystem::new_with_prefix(tmp.path()).unwrap();
/// let location = Path::from("example.txt");
/// let content = b"Hello, Object Store!";
///
/// // Put the object into the store
/// store
/// .put(&location, content.as_ref().into())
/// .await
/// .expect("Failed to put object");
///
/// // Get the object from the store to figure out the right etag
/// let result: object_store::GetResult = store.get(&location).await.expect("Failed to get object");
///
/// let etag = result.meta.e_tag.expect("ETag should be present");
///
/// // Get the object from the store with range and etag
/// let bytes = store
/// .get_opts(
/// &location,
/// GetOptions::new()
/// .with_if_match(Some(etag.clone())),
/// )
/// .await
/// .expect("Failed to get object with range and etag")
/// .bytes()
/// .await
/// .expect("Failed to read bytes");
///
/// println!(
/// "Retrieved with ETag {}: {}",
/// etag,
/// String::from_utf8_lossy(&bytes)
/// );
///
/// // Show that if the etag does not match, we get an error
/// let wrong_etag = "wrong-etag".to_string();
/// match store
/// .get_opts(
/// &location,
/// GetOptions::new().with_if_match(Some(wrong_etag))
/// )
/// .await
/// {
/// Ok(_) => println!("Unexpectedly succeeded with wrong ETag"),
/// Err(e) => println!("On a non-versioned object store, getting an invalid ETag ('wrong-etag') results in an error as expected: {}", e),
/// }
/// }
/// ```
///
/// To retrieve a range of bytes from a versioned object, specify the range in the [`GetOptions`] supplied to this method.
///
/// ```ignore-wasm32
/// # use object_store::local::LocalFileSystem;
/// # use tempfile::tempdir;
/// # use object_store::{path::Path, ObjectStore, ObjectStoreExt, GetOptions};
/// async fn get_opts_range_example() {
/// let tmp = tempdir().unwrap();
/// let store = LocalFileSystem::new_with_prefix(tmp.path()).unwrap();
/// let location = Path::from("example.txt");
/// let content = b"Hello, Object Store!";
///
/// // Put the object into the store
/// store
/// .put(&location, content.as_ref().into())
/// .await
/// .expect("Failed to put object");
///
/// // Get the object from the store to figure out the right etag
/// let result: object_store::GetResult = store.get(&location).await.expect("Failed to get object");
///
/// let etag = result.meta.e_tag.expect("ETag should be present");
///
/// // Get the object from the store with range and etag
/// let bytes = store
/// .get_opts(
/// &location,
/// GetOptions::new()
/// .with_range(Some(0..5))
/// .with_if_match(Some(etag.clone())),
/// )
/// .await
/// .expect("Failed to get object with range and etag")
/// .bytes()
/// .await
/// .expect("Failed to read bytes");
///
/// println!(
/// "Retrieved range [0-5] with ETag {}: {}",
/// etag,
/// String::from_utf8_lossy(&bytes)
/// );
///
/// // Show that if the etag does not match, we get an error
/// let wrong_etag = "wrong-etag".to_string();
/// match store
/// .get_opts(
/// &location,
/// GetOptions::new().with_range(Some(0..5)).with_if_match(Some(wrong_etag))
/// )
/// .await
/// {
/// Ok(_) => println!("Unexpectedly succeeded with wrong ETag"),
/// Err(e) => println!("On a non-versioned object store, getting an invalid ETag ('wrong-etag') results in an error as expected: {}", e),
/// }
/// }
/// ```
async fn get_opts(&self, location: &Path, options: GetOptions) -> Result<GetResult>;
/// Return the bytes that are stored at the specified location
/// in the given byte ranges
async fn get_ranges(&self, location: &Path, ranges: &[Range<u64>]) -> Result<Vec<Bytes>> {
coalesce_ranges(
ranges,
|range| self.get_range(location, range),
OBJECT_STORE_COALESCE_DEFAULT,
)
.await
}
/// Delete all the objects at the specified locations
///
/// When supported, this method will use bulk operations that delete more
/// than one object per a request. Otherwise, the implementation may call
/// the single object delete method for each location.
///
/// # Bulk Delete Support
///
/// The following backends support native bulk delete operations:
///
/// - **AWS (S3)**: Uses the native [DeleteObjects] API with batches of up to 1000 objects
/// - **Azure**: Uses the native [Blob Batch] API with batches of up to 256 objects
///
/// The following backends use concurrent individual delete operations:
///
/// - **GCP**: Performs individual delete requests with up to 10 concurrent operations
/// - **HTTP**: Performs individual delete requests with up to 10 concurrent operations
/// - **Local**: Performs individual file deletions with up to 10 concurrent operations
/// - **Memory**: Performs individual in-memory deletions sequentially
///
/// [DeleteObjects]: https://docs.aws.amazon.com/AmazonS3/latest/API/API_DeleteObjects.html
/// [Blob Batch]: https://learn.microsoft.com/en-us/rest/api/storageservices/blob-batch
///
/// The returned stream yields the results of the delete operations in the
/// same order as the input locations. However, some errors will be from
/// an overall call to a bulk delete operation, and not from a specific
/// location.
///
/// If the object did not exist, the result may be an error or a success,
/// depending on the behavior of the underlying store. For example, local
/// filesystems, GCP, and Azure return an error, while S3 and in-memory will
/// return Ok. If it is an error, it will be [`Error::NotFound`].
///
/// ```ignore-wasm32
/// # use futures_util::{StreamExt, TryStreamExt};
/// # use object_store::local::LocalFileSystem;
/// # async fn example() -> Result<(), Box<dyn std::error::Error>> {
/// # let root = tempfile::TempDir::new().unwrap();
/// # let store = LocalFileSystem::new_with_prefix(root.path()).unwrap();
/// # use object_store::{ObjectStore, ObjectStoreExt, ObjectMeta};
/// # use object_store::path::Path;
/// # use futures_util::{StreamExt, TryStreamExt};
/// #
/// // Create two objects
/// store.put(&Path::from("foo"), "foo".into()).await?;
/// store.put(&Path::from("bar"), "bar".into()).await?;
///
/// // List object
/// let locations = store.list(None).map_ok(|m| m.location).boxed();
///
/// // Delete them
/// store.delete_stream(locations).try_collect::<Vec<Path>>().await?;
/// # Ok(())
/// # }
/// # let rt = tokio::runtime::Builder::new_current_thread().build().unwrap();
/// # rt.block_on(example()).unwrap();
/// ```
///
/// Note: Before version 0.13, `delete_stream` has a default implementation
/// that deletes each object with up to 10 concurrent requests. This default
/// behavior has been removed, and each implementation must now provide its
/// own `delete_stream` implementation explicitly. The following example
/// shows how to implement `delete_stream` to get the previous default
/// behavior.
///
/// ```
/// # use async_trait::async_trait;
/// # use futures_util::stream::{BoxStream, StreamExt};
/// # use object_store::path::Path;
/// # use object_store::{
/// # CopyOptions, GetOptions, GetResult, ListResult, MultipartUpload, ObjectMeta, ObjectStore,
/// # PutMultipartOptions, PutOptions, PutPayload, PutResult, Result,
/// # };
/// # use std::fmt;
/// # use std::fmt::Debug;
/// # use std::sync::Arc;
/// #
/// # struct ExampleClient;
/// #
/// # impl ExampleClient {
/// # async fn delete(&self, _path: &Path) -> Result<()> {
/// # Ok(())
/// # }
/// # }
/// #
/// # struct ExampleStore {
/// # client: Arc<ExampleClient>,
/// # }
/// #
/// # impl Debug for ExampleStore {
/// # fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
/// # write!(f, "ExampleStore")
/// # }
/// # }
/// #
/// # impl fmt::Display for ExampleStore {
/// # fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
/// # write!(f, "ExampleStore")
/// # }
/// # }
/// #
/// # #[async_trait]
/// # impl ObjectStore for ExampleStore {
/// # async fn put_opts(&self, _: &Path, _: PutPayload, _: PutOptions) -> Result<PutResult> {
/// # todo!()
/// # }
/// #
/// # async fn put_multipart_opts(
/// # &self,
/// # _: &Path,
/// # _: PutMultipartOptions,
/// # ) -> Result<Box<dyn MultipartUpload>> {
/// # todo!()
/// # }
/// #
/// # async fn get_opts(&self, _: &Path, _: GetOptions) -> Result<GetResult> {
/// # todo!()
/// # }
/// #
/// fn delete_stream(
/// &self,
/// locations: BoxStream<'static, Result<Path>>,
/// ) -> BoxStream<'static, Result<Path>> {
/// let client = Arc::clone(&self.client);
/// locations
/// .map(move |location| {
/// let client = Arc::clone(&client);
/// async move {
/// let location = location?;
/// client.delete(&location).await?;
/// Ok(location)
/// }
/// })
/// .buffered(10)
/// .boxed()
/// }
/// #
/// # fn list(&self, _: Option<&Path>) -> BoxStream<'static, Result<ObjectMeta>> {
/// # todo!()
/// # }
/// #
/// # async fn list_with_delimiter(&self, _: Option<&Path>) -> Result<ListResult> {
/// # todo!()
/// # }
/// #
/// # async fn copy_opts(&self, _: &Path, _: &Path, _: CopyOptions) -> Result<()> {
/// # todo!()
/// # }
/// # }
/// #
/// # async fn example() {
/// # let store = ExampleStore { client: Arc::new(ExampleClient) };
/// # let paths = futures_util::stream::iter(vec![Ok(Path::from("foo")), Ok(Path::from("bar"))]).boxed();
/// # let results = store.delete_stream(paths).collect::<Vec<_>>().await;
/// # assert_eq!(results.len(), 2);
/// # assert_eq!(results[0].as_ref().unwrap(), &Path::from("foo"));
/// # assert_eq!(results[1].as_ref().unwrap(), &Path::from("bar"));
/// # }
/// #
/// # let rt = tokio::runtime::Builder::new_current_thread().build().unwrap();
/// # rt.block_on(example());
/// ```
fn delete_stream(
&self,
locations: BoxStream<'static, Result<Path>>,
) -> BoxStream<'static, Result<Path>>;
/// List all the objects with the given prefix.
///
/// Prefixes are evaluated on a path segment basis, i.e. `foo/bar` is a prefix of `foo/bar/x` but not of
/// `foo/bar_baz/x`. List is recursive, i.e. `foo/bar/more/x` will be included.
///
/// Note: the order of returned [`ObjectMeta`] is not guaranteed
///
/// For more advanced listing see [`PaginatedListStore`](list::PaginatedListStore)
fn list(&self, prefix: Option<&Path>) -> BoxStream<'static, Result<ObjectMeta>>;
/// List all the objects with the given prefix and a location greater than `offset`
///
/// Some stores, such as S3 and GCS, may be able to push `offset` down to reduce
/// the number of network requests required.
///
/// This returns an exclusive offset, i.e. objects at exactly `offset` will not be included.
///
/// Note: the order of returned [`ObjectMeta`] is not guaranteed
///
/// For more advanced listing see [`PaginatedListStore`](list::PaginatedListStore)
fn list_with_offset(
&self,
prefix: Option<&Path>,
offset: &Path,
) -> BoxStream<'static, Result<ObjectMeta>> {
let offset = offset.clone();
self.list(prefix)
.try_filter(move |f| futures_util::future::ready(f.location > offset))
.boxed()
}
/// List objects with the given prefix and an implementation specific
/// delimiter. Returns common prefixes (directories) in addition to object
/// metadata.
///
/// Prefixes are evaluated on a path segment basis, i.e. `foo/bar` is a prefix of `foo/bar/x` but not of
/// `foo/bar_baz/x`. List is not recursive, i.e. `foo/bar/more/x` will not be included.
async fn list_with_delimiter(&self, prefix: Option<&Path>) -> Result<ListResult>;
/// Copy an object from one path to another in the same object store.
async fn copy_opts(&self, from: &Path, to: &Path, options: CopyOptions) -> Result<()>;
/// Move an object from one path to another in the same object store.
///
/// By default, this is implemented as a copy and then delete source. It may not
/// check when deleting source that it was the same object that was originally copied.
async fn rename_opts(&self, from: &Path, to: &Path, options: RenameOptions) -> Result<()> {
let RenameOptions {
target_mode,
extensions,
} = options;
let copy_mode = match target_mode {
RenameTargetMode::Overwrite => CopyMode::Overwrite,
RenameTargetMode::Create => CopyMode::Create,
};
let copy_options = CopyOptions {
mode: copy_mode,
extensions,
};
self.copy_opts(from, to, copy_options).await?;
self.delete(from).await?;
Ok(())
}
}
macro_rules! as_ref_impl {
($type:ty) => {
#[async_trait]
#[deny(clippy::missing_trait_methods)]
impl<T: ObjectStore + ?Sized> ObjectStore for $type {
async fn put_opts(
&self,
location: &Path,
payload: PutPayload,
opts: PutOptions,
) -> Result<PutResult> {
self.as_ref().put_opts(location, payload, opts).await
}
async fn put_multipart_opts(
&self,
location: &Path,
opts: PutMultipartOptions,
) -> Result<Box<dyn MultipartUpload>> {
self.as_ref().put_multipart_opts(location, opts).await
}
async fn get_opts(&self, location: &Path, options: GetOptions) -> Result<GetResult> {
self.as_ref().get_opts(location, options).await
}
async fn get_ranges(
&self,
location: &Path,
ranges: &[Range<u64>],
) -> Result<Vec<Bytes>> {
self.as_ref().get_ranges(location, ranges).await
}
fn delete_stream(
&self,
locations: BoxStream<'static, Result<Path>>,
) -> BoxStream<'static, Result<Path>> {
self.as_ref().delete_stream(locations)
}
fn list(&self, prefix: Option<&Path>) -> BoxStream<'static, Result<ObjectMeta>> {
self.as_ref().list(prefix)
}
fn list_with_offset(
&self,
prefix: Option<&Path>,
offset: &Path,
) -> BoxStream<'static, Result<ObjectMeta>> {
self.as_ref().list_with_offset(prefix, offset)
}
async fn list_with_delimiter(&self, prefix: Option<&Path>) -> Result<ListResult> {
self.as_ref().list_with_delimiter(prefix).await
}
async fn copy_opts(&self, from: &Path, to: &Path, options: CopyOptions) -> Result<()> {
self.as_ref().copy_opts(from, to, options).await
}
async fn rename_opts(
&self,
from: &Path,
to: &Path,
options: RenameOptions,
) -> Result<()> {
self.as_ref().rename_opts(from, to, options).await
}
}
};
}
as_ref_impl!(Arc<T>);
as_ref_impl!(Box<T>);
/// Extension trait for [`ObjectStore`] with convenience functions.
///
/// See the [module-level documentation](crate) for a high level overview and
/// examples. See "contract" section within the [`ObjectStore`] documentation
/// for more reasoning.
///
/// # Implementation
/// You MUST NOT implement this trait yourself. It is automatically implemented for all [`ObjectStore`] implementations.
pub trait ObjectStoreExt: ObjectStore {
/// Save the provided bytes to the specified location
///
/// The operation is guaranteed to be atomic, it will either successfully
/// write the entirety of `payload` to `location`, or fail. No clients
/// should be able to observe a partially written object
fn put(&self, location: &Path, payload: PutPayload) -> impl Future<Output = Result<PutResult>>;
/// Perform a multipart upload
///
/// Client should prefer [`ObjectStoreExt::put`] for small payloads, as streaming uploads
/// typically require multiple separate requests. See [`MultipartUpload`] for more information
///
/// For more advanced multipart uploads see [`MultipartStore`](multipart::MultipartStore)
fn put_multipart(
&self,
location: &Path,
) -> impl Future<Output = Result<Box<dyn MultipartUpload>>>;
/// Return the bytes that are stored at the specified location.
///
/// ## Example
///
/// This example uses a basic local filesystem object store to get an object.
///
/// ```ignore-wasm32
/// # use object_store::local::LocalFileSystem;
/// # use tempfile::tempdir;
/// # use object_store::{path::Path, ObjectStore, ObjectStoreExt};
/// async fn get_example() {
/// let tmp = tempdir().unwrap();
/// let store = LocalFileSystem::new_with_prefix(tmp.path()).unwrap();
/// let location = Path::from("example.txt");
/// let content = b"Hello, Object Store!";
///
/// // Put the object into the store
/// store
/// .put(&location, content.as_ref().into())
/// .await
/// .expect("Failed to put object");
///
/// // Get the object from the store
/// let get_result = store.get(&location).await.expect("Failed to get object");
/// let bytes = get_result.bytes().await.expect("Failed to read bytes");
/// println!("Retrieved content: {}", String::from_utf8_lossy(&bytes));
/// }
/// ```
fn get(&self, location: &Path) -> impl Future<Output = Result<GetResult>>;
/// Return the bytes that are stored at the specified location
/// in the given byte range.
///
/// See [`GetRange::Bounded`] for more details on how `range` gets interpreted.
///
/// To retrieve a range of bytes from a versioned object, use [`ObjectStore::get_opts`] by specifying the range in the [`GetOptions`].
///
/// ## Examples
///
/// This example uses a basic local filesystem object store to get a byte range from an object.
///
/// ```ignore-wasm32
/// # use object_store::local::LocalFileSystem;
/// # use tempfile::tempdir;
/// # use object_store::{path::Path, ObjectStore, ObjectStoreExt};
/// async fn get_range_example() {
/// let tmp = tempdir().unwrap();
/// let store = LocalFileSystem::new_with_prefix(tmp.path()).unwrap();
/// let location = Path::from("example.txt");
/// let content = b"Hello, Object Store!";
///
/// // Put the object into the store
/// store
/// .put(&location, content.as_ref().into())
/// .await
/// .expect("Failed to put object");
///
/// // Get the object from the store
/// let bytes = store
/// .get_range(&location, 0..5)
/// .await
/// .expect("Failed to get object");
/// println!("Retrieved range [0-5]: {}", String::from_utf8_lossy(&bytes));
/// }
/// ```
fn get_range(&self, location: &Path, range: Range<u64>) -> impl Future<Output = Result<Bytes>>;
/// Return the metadata for the specified location
fn head(&self, location: &Path) -> impl Future<Output = Result<ObjectMeta>>;
/// Delete the object at the specified location.
fn delete(&self, location: &Path) -> impl Future<Output = Result<()>>;
/// Copy an object from one path to another in the same object store.
///
/// If there exists an object at the destination, it will be overwritten.
fn copy(&self, from: &Path, to: &Path) -> impl Future<Output = Result<()>>;
/// Copy an object from one path to another, only if destination is empty.
///
/// Will return an error if the destination already has an object.
///
/// Performs an atomic operation if the underlying object storage supports it.
/// If atomic operations are not supported by the underlying object storage (like S3)
/// it will return an error.
fn copy_if_not_exists(&self, from: &Path, to: &Path) -> impl Future<Output = Result<()>>;
/// Move an object from one path to another in the same object store.
///
/// By default, this is implemented as a copy and then delete source. It may not
/// check when deleting source that it was the same object that was originally copied.
///
/// If there exists an object at the destination, it will be overwritten.
fn rename(&self, from: &Path, to: &Path) -> impl Future<Output = Result<()>>;
/// Move an object from one path to another in the same object store.
///
/// Will return an error if the destination already has an object.
fn rename_if_not_exists(&self, from: &Path, to: &Path) -> impl Future<Output = Result<()>>;
}
impl<T> ObjectStoreExt for T
where
T: ObjectStore + ?Sized,
{
async fn put(&self, location: &Path, payload: PutPayload) -> Result<PutResult> {
self.put_opts(location, payload, PutOptions::default())
.await
}
async fn put_multipart(&self, location: &Path) -> Result<Box<dyn MultipartUpload>> {
self.put_multipart_opts(location, PutMultipartOptions::default())
.await
}
async fn get(&self, location: &Path) -> Result<GetResult> {
self.get_opts(location, GetOptions::default()).await
}
async fn get_range(&self, location: &Path, range: Range<u64>) -> Result<Bytes> {
let options = GetOptions::new().with_range(Some(range));
self.get_opts(location, options).await?.bytes().await
}
async fn head(&self, location: &Path) -> Result<ObjectMeta> {
let options = GetOptions::new().with_head(true);
Ok(self.get_opts(location, options).await?.meta)
}
async fn delete(&self, location: &Path) -> Result<()> {
let location = location.clone();
let mut stream =
self.delete_stream(futures_util::stream::once(async move { Ok(location) }).boxed());
let _path = stream.try_next().await?.ok_or_else(|| Error::Generic {
store: "ext",
source: "`delete_stream` with one location should yield once but didn't".into(),
})?;
if stream.next().await.is_some() {
Err(Error::Generic {
store: "ext",
source: "`delete_stream` with one location expected to yield exactly once, but yielded more than once".into(),
})
} else {
Ok(())
}
}
async fn copy(&self, from: &Path, to: &Path) -> Result<()> {
let options = CopyOptions::new().with_mode(CopyMode::Overwrite);
self.copy_opts(from, to, options).await
}
async fn copy_if_not_exists(&self, from: &Path, to: &Path) -> Result<()> {
let options = CopyOptions::new().with_mode(CopyMode::Create);
self.copy_opts(from, to, options).await
}
async fn rename(&self, from: &Path, to: &Path) -> Result<()> {
let options = RenameOptions::new().with_target_mode(RenameTargetMode::Overwrite);
self.rename_opts(from, to, options).await
}
async fn rename_if_not_exists(&self, from: &Path, to: &Path) -> Result<()> {
let options = RenameOptions::new().with_target_mode(RenameTargetMode::Create);
self.rename_opts(from, to, options).await
}
}
/// Result of a list call that includes objects, prefixes (directories) and a
/// token for the next set of results. Individual result sets may be limited to
/// 1,000 objects based on the underlying object storage's limitations.
#[derive(Debug)]
pub struct ListResult {
/// Prefixes that are common (like directories)
pub common_prefixes: Vec<Path>,
/// Object metadata for the listing
pub objects: Vec<ObjectMeta>,
}
/// The metadata that describes an object.
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct ObjectMeta {
/// The full path to the object
pub location: Path,
/// The last modified time
pub last_modified: DateTime<Utc>,
/// 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>
pub e_tag: Option<String>,
/// A version indicator for this object
pub version: Option<String>,
}
/// Options for a get request, such as range
#[derive(Debug, Default, Clone)]
pub struct GetOptions {
/// Request will succeed if the `ObjectMeta::e_tag` matches
/// otherwise returning [`Error::Precondition`]
///
/// See <https://datatracker.ietf.org/doc/html/rfc9110#name-if-match>
///
/// Examples:
///
/// ```text
/// If-Match: "xyzzy"
/// If-Match: "xyzzy", "r2d2xxxx", "c3piozzzz"
/// If-Match: *
/// ```
pub if_match: Option<String>,
/// Request will succeed if the `ObjectMeta::e_tag` does not match
/// otherwise returning [`Error::NotModified`]
///
/// See <https://datatracker.ietf.org/doc/html/rfc9110#section-13.1.2>
///
/// Examples:
///
/// ```text
/// If-None-Match: "xyzzy"
/// If-None-Match: "xyzzy", "r2d2xxxx", "c3piozzzz"
/// If-None-Match: *
/// ```
pub if_none_match: Option<String>,
/// Request will succeed if the object has been modified since
///
/// <https://datatracker.ietf.org/doc/html/rfc9110#section-13.1.3>
pub if_modified_since: Option<DateTime<Utc>>,
/// Request will succeed if the object has not been modified since
/// otherwise returning [`Error::Precondition`]
///
/// Some stores, such as S3, will only return `NotModified` for exact
/// timestamp matches, instead of for any timestamp greater than or equal.
///
/// <https://datatracker.ietf.org/doc/html/rfc9110#section-13.1.4>
pub if_unmodified_since: Option<DateTime<Utc>>,
/// Request transfer of only the specified range of bytes
/// otherwise returning [`Error::NotModified`]
///
/// <https://datatracker.ietf.org/doc/html/rfc9110#name-range>
pub range: Option<GetRange>,
/// Request a particular object version
pub version: Option<String>,
/// Request transfer of no content
///
/// <https://datatracker.ietf.org/doc/html/rfc9110#name-head>
pub head: bool,
/// Implementation-specific extensions. Intended for use by [`ObjectStore`] implementations
/// that need to pass context-specific information (like tracing spans) via trait methods.
///
/// These extensions are ignored entirely by backends offered through this crate.
pub extensions: Extensions,
}
impl GetOptions {
/// Returns an error if the modification conditions on this request are not satisfied
///
/// <https://datatracker.ietf.org/doc/html/rfc7232#section-6>
pub fn check_preconditions(&self, meta: &ObjectMeta) -> Result<()> {
// The use of the invalid etag "*" means no ETag is equivalent to never matching
let etag = meta.e_tag.as_deref().unwrap_or("*");
let last_modified = meta.last_modified;
if let Some(m) = &self.if_match {
if m != "*" && m.split(',').map(str::trim).all(|x| x != etag) {
return Err(Error::Precondition {
path: meta.location.to_string(),
source: format!("{etag} does not match {m}").into(),
});
}
} else if let Some(date) = self.if_unmodified_since {
if last_modified > date {
return Err(Error::Precondition {
path: meta.location.to_string(),
source: format!("{date} < {last_modified}").into(),
});
}
}
if let Some(m) = &self.if_none_match {
if m == "*" || m.split(',').map(str::trim).any(|x| x == etag) {
return Err(Error::NotModified {
path: meta.location.to_string(),
source: format!("{etag} matches {m}").into(),
});
}
} else if let Some(date) = self.if_modified_since {
if last_modified <= date {
return Err(Error::NotModified {
path: meta.location.to_string(),
source: format!("{date} >= {last_modified}").into(),
});
}
}
Ok(())
}
/// Create a new [`GetOptions`]
pub fn new() -> Self {
Self::default()
}
/// Sets the `if_match` condition.
///
/// See [`GetOptions::if_match`]
#[must_use]
pub fn with_if_match(mut self, etag: Option<impl Into<String>>) -> Self {
self.if_match = etag.map(Into::into);
self
}
/// Sets the `if_none_match` condition.
///
/// See [`GetOptions::if_none_match`]
#[must_use]
pub fn with_if_none_match(mut self, etag: Option<impl Into<String>>) -> Self {
self.if_none_match = etag.map(Into::into);
self
}
/// Sets the `if_modified_since` condition.
///
/// See [`GetOptions::if_modified_since`]
#[must_use]
pub fn with_if_modified_since(mut self, dt: Option<impl Into<DateTime<Utc>>>) -> Self {
self.if_modified_since = dt.map(Into::into);
self
}
/// Sets the `if_unmodified_since` condition.
///
/// See [`GetOptions::if_unmodified_since`]
#[must_use]
pub fn with_if_unmodified_since(mut self, dt: Option<impl Into<DateTime<Utc>>>) -> Self {
self.if_unmodified_since = dt.map(Into::into);
self
}
/// Sets the `range` condition.
///
/// See [`GetOptions::range`]
#[must_use]
pub fn with_range(mut self, range: Option<impl Into<GetRange>>) -> Self {
self.range = range.map(Into::into);
self
}
/// Sets the `version` condition.
///
/// See [`GetOptions::version`]
#[must_use]
pub fn with_version(mut self, version: Option<impl Into<String>>) -> Self {
self.version = version.map(Into::into);
self
}
/// Sets the `head` condition.
///
/// See [`GetOptions::head`]
#[must_use]
pub fn with_head(mut self, head: impl Into<bool>) -> Self {
self.head = head.into();
self
}
/// Sets the `extensions` condition.
///
/// See [`GetOptions::extensions`]
#[must_use]
pub fn with_extensions(mut self, extensions: Extensions) -> Self {
self.extensions = extensions;
self
}
}
/// Result for a get request
#[derive(Debug)]
pub struct GetResult {
/// The [`GetResultPayload`]
pub payload: GetResultPayload,
/// The [`ObjectMeta`] for this object
pub meta: ObjectMeta,
/// The range of bytes returned by this request
///
/// 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,
}
/// The kind of a [`GetResult`]
///
/// This special cases the case of a local file, as some systems may
/// be able to optimise the case of a file already present on local disk
pub enum GetResultPayload {
/// The file, path
#[cfg(all(feature = "fs", not(target_arch = "wasm32")))]
File(std::fs::File, std::path::PathBuf),
/// An opaque stream of bytes
Stream(BoxStream<'static, Result<Bytes>>),
}
impl Debug for GetResultPayload {
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
match self {
#[cfg(all(feature = "fs", not(target_arch = "wasm32")))]
Self::File(_, _) => write!(f, "GetResultPayload(File)"),
Self::Stream(_) => write!(f, "GetResultPayload(Stream)"),
}
}
}
impl GetResult {
/// Collects the data into a [`Bytes`]
pub async fn bytes(self) -> Result<Bytes> {
let len = self.range.end - self.range.start;
match self.payload {
#[cfg(all(feature = "fs", not(target_arch = "wasm32")))]
GetResultPayload::File(mut file, path) => {
maybe_spawn_blocking(move || {
use crate::local::read_range;
let buffer = read_range(&mut file, &path, self.range)?;
Ok(buffer)
})
.await
}
GetResultPayload::Stream(s) => collect_bytes(s, Some(len)).await,
}
}
/// Converts this into a byte stream
///
/// If the `self.kind` is [`GetResultPayload::File`] will perform chunked reads of the file,
/// otherwise will return the [`GetResultPayload::Stream`].
///
/// # Tokio Compatibility
///
/// Tokio discourages performing blocking IO on a tokio worker thread, however,
/// no major operating systems have stable async file APIs. Therefore if called from
/// a tokio context, this will use [`tokio::runtime::Handle::spawn_blocking`] to dispatch
/// IO to a blocking thread pool, much like `tokio::fs` does under-the-hood.
///
/// If not called from a tokio context, this will perform IO on the current thread with
/// no additional complexity or overheads
pub fn into_stream(self) -> BoxStream<'static, Result<Bytes>> {
match self.payload {
#[cfg(all(feature = "fs", not(target_arch = "wasm32")))]
GetResultPayload::File(file, path) => {
const CHUNK_SIZE: usize = 8 * 1024;
local::chunked_stream(file, path, self.range, CHUNK_SIZE)
}
GetResultPayload::Stream(s) => s,
}
}
}
/// Configure preconditions for the put operation
#[derive(Debug, Clone, PartialEq, Eq, Default)]
pub enum PutMode {
/// Perform an atomic write operation, overwriting any object present at the provided path
#[default]
Overwrite,
/// Perform an atomic write operation, returning [`Error::AlreadyExists`] if an
/// object already exists at the provided path
Create,
/// Perform an atomic write operation if the current version of the object matches the
/// provided [`UpdateVersion`], returning [`Error::Precondition`] otherwise
Update(UpdateVersion),
}
/// Uniquely identifies a version of an object to update
///
/// Stores will use differing combinations of `e_tag` and `version` to provide conditional
/// updates, and it is therefore recommended applications preserve both
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct UpdateVersion {
/// The unique identifier for the newly created object
///
/// <https://datatracker.ietf.org/doc/html/rfc9110#name-etag>
pub e_tag: Option<String>,
/// A version indicator for the newly created object
pub version: Option<String>,
}
impl From<PutResult> for UpdateVersion {
fn from(value: PutResult) -> Self {
Self {
e_tag: value.e_tag,
version: value.version,
}
}
}
/// Options for a put request
#[derive(Debug, Clone, Default)]
pub struct PutOptions {
/// Configure the [`PutMode`] for this operation
pub mode: PutMode,
/// Provide a [`TagSet`] for this object
///
/// Implementations that don't support object tagging should ignore this
pub tags: TagSet,
/// Provide a set of [`Attributes`]
///
/// Implementations that don't support an attribute should return an error
pub attributes: Attributes,
/// Implementation-specific extensions. Intended for use by [`ObjectStore`] implementations
/// that need to pass context-specific information (like tracing spans) via trait methods.
///
/// These extensions are ignored entirely by backends offered through this crate.
///
/// They are also excluded from [`PartialEq`] and [`Eq`].
pub extensions: Extensions,
}
impl PartialEq<Self> for PutOptions {
fn eq(&self, other: &Self) -> bool {
let Self {
mode,
tags,
attributes,
extensions: _,
} = self;
let Self {
mode: other_mode,
tags: other_tags,
attributes: other_attributes,
extensions: _,
} = other;
(mode == other_mode) && (tags == other_tags) && (attributes == other_attributes)
}
}
impl Eq for PutOptions {}
impl From<PutMode> for PutOptions {
fn from(mode: PutMode) -> Self {
Self {
mode,
..Default::default()
}
}
}
impl From<TagSet> for PutOptions {
fn from(tags: TagSet) -> Self {
Self {
tags,
..Default::default()
}
}
}
impl From<Attributes> for PutOptions {
fn from(attributes: Attributes) -> Self {
Self {
attributes,
..Default::default()
}
}
}
// See <https://github.com/apache/arrow-rs-object-store/issues/339>.
#[doc(hidden)]
#[deprecated(note = "Use PutMultipartOptions", since = "0.12.3")]
pub type PutMultipartOpts = PutMultipartOptions;
/// Options for [`ObjectStore::put_multipart_opts`]
#[derive(Debug, Clone, Default)]
pub struct PutMultipartOptions {
/// Provide a [`TagSet`] for this object
///
/// Implementations that don't support object tagging should ignore this
pub tags: TagSet,
/// Provide a set of [`Attributes`]
///
/// Implementations that don't support an attribute should return an error
pub attributes: Attributes,
/// Implementation-specific extensions. Intended for use by [`ObjectStore`] implementations
/// that need to pass context-specific information (like tracing spans) via trait methods.
///
/// These extensions are ignored entirely by backends offered through this crate.
///
/// They are also excluded from [`PartialEq`] and [`Eq`].
pub extensions: Extensions,
}
impl PartialEq<Self> for PutMultipartOptions {
fn eq(&self, other: &Self) -> bool {
let Self {
tags,
attributes,
extensions: _,
} = self;
let Self {
tags: other_tags,
attributes: other_attributes,
extensions: _,
} = other;
(tags == other_tags) && (attributes == other_attributes)
}
}
impl Eq for PutMultipartOptions {}
impl From<TagSet> for PutMultipartOptions {
fn from(tags: TagSet) -> Self {
Self {
tags,
..Default::default()
}
}
}
impl From<Attributes> for PutMultipartOptions {
fn from(attributes: Attributes) -> Self {
Self {
attributes,
..Default::default()
}
}
}
/// Result for a put request
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct PutResult {
/// The unique identifier for the newly created object
///
/// <https://datatracker.ietf.org/doc/html/rfc9110#name-etag>
pub e_tag: Option<String>,
/// A version indicator for the newly created object
pub version: Option<String>,
}
/// Configure preconditions for the copy operation
#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
pub enum CopyMode {
/// Perform an atomic write operation, overwriting any object present at the provided path
#[default]
Overwrite,
/// Perform an atomic write operation, returning [`Error::AlreadyExists`] if an
/// object already exists at the provided path
Create,
}
/// Options for a copy request
#[derive(Debug, Clone, Default)]
pub struct CopyOptions {
/// Configure the [`CopyMode`] for this operation
pub mode: CopyMode,
/// Implementation-specific extensions. Intended for use by [`ObjectStore`] implementations
/// that need to pass context-specific information (like tracing spans) via trait methods.
///
/// These extensions are ignored entirely by backends offered through this crate.
///
/// They are also excluded from [`PartialEq`] and [`Eq`].
pub extensions: Extensions,
}
impl CopyOptions {
/// Create a new [`CopyOptions`]
pub fn new() -> Self {
Self::default()
}
/// Sets the `mode.
///
/// See [`CopyOptions::mode`].
#[must_use]
pub fn with_mode(mut self, mode: CopyMode) -> Self {
self.mode = mode;
self
}
/// Sets the `extensions`.
///
/// See [`CopyOptions::extensions`].
#[must_use]
pub fn with_extensions(mut self, extensions: Extensions) -> Self {
self.extensions = extensions;
self
}
}
impl PartialEq<Self> for CopyOptions {
fn eq(&self, other: &Self) -> bool {
let Self {
mode,
extensions: _,
} = self;
let Self {
mode: mode_other,
extensions: _,
} = other;
mode == mode_other
}
}
impl Eq for CopyOptions {}
/// Configure preconditions for the target of rename operation.
///
/// Note though that the source location may or not be deleted at the same time in an atomic operation. There is
/// currently NO flag to control the atomicity of "delete source at the same time as creating the target".
#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
pub enum RenameTargetMode {
/// Perform a write operation on the target, overwriting any object present at the provided path.
#[default]
Overwrite,
/// Perform an atomic write operation of the target, returning [`Error::AlreadyExists`] if an
/// object already exists at the provided path.
Create,
}
/// Options for a rename request
#[derive(Debug, Clone, Default)]
pub struct RenameOptions {
/// Configure the [`RenameTargetMode`] for this operation
pub target_mode: RenameTargetMode,
/// Implementation-specific extensions. Intended for use by [`ObjectStore`] implementations
/// that need to pass context-specific information (like tracing spans) via trait methods.
///
/// These extensions are ignored entirely by backends offered through this crate.
///
/// They are also excluded from [`PartialEq`] and [`Eq`].
pub extensions: Extensions,
}
impl RenameOptions {
/// Create a new [`RenameOptions`]
pub fn new() -> Self {
Self::default()
}
/// Sets the `target_mode=.
///
/// See [`RenameOptions::target_mode`].
#[must_use]
pub fn with_target_mode(mut self, target_mode: RenameTargetMode) -> Self {
self.target_mode = target_mode;
self
}
/// Sets the `extensions`.
///
/// See [`RenameOptions::extensions`].
#[must_use]
pub fn with_extensions(mut self, extensions: Extensions) -> Self {
self.extensions = extensions;
self
}
}
impl PartialEq<Self> for RenameOptions {
fn eq(&self, other: &Self) -> bool {
let Self {
target_mode,
extensions: _,
} = self;
let Self {
target_mode: target_mode_other,
extensions: _,
} = other;
target_mode == target_mode_other
}
}
impl Eq for RenameOptions {}
/// A specialized `Result` for object store-related errors
pub type Result<T, E = Error> = std::result::Result<T, E>;
/// A specialized `Error` for object store-related errors
#[derive(Debug, thiserror::Error)]
#[non_exhaustive]
pub enum Error {
/// A fallback error type when no variant matches
#[error("Generic {} error: {}", store, source)]
Generic {
/// The store this error originated from
store: &'static str,
/// The wrapped error
source: Box<dyn std::error::Error + Send + Sync + 'static>,
},
/// Error when the object is not found at given location
#[error("Object at location {} not found: {}", path, source)]
NotFound {
/// The path to file
path: String,
/// The wrapped error
source: Box<dyn std::error::Error + Send + Sync + 'static>,
},
/// Error for invalid path
#[error("Encountered object with invalid path: {}", source)]
InvalidPath {
/// The wrapped error
#[from]
source: path::Error,
},
/// Error when `tokio::spawn` failed
#[cfg(feature = "tokio")]
#[error("Error joining spawned task: {}", source)]
JoinError {
/// The wrapped error
#[from]
source: tokio::task::JoinError,
},
/// Error when the attempted operation is not supported
#[error("Operation not supported: {}", source)]
NotSupported {
/// The wrapped error
source: Box<dyn std::error::Error + Send + Sync + 'static>,
},
/// Error when the object already exists
#[error("Object at location {} already exists: {}", path, source)]
AlreadyExists {
/// The path to the
path: String,
/// The wrapped error
source: Box<dyn std::error::Error + Send + Sync + 'static>,
},
/// Error when the required conditions failed for the operation
#[error("Request precondition failure for path {}: {}", path, source)]
Precondition {
/// The path to the file
path: String,
/// The wrapped error
source: Box<dyn std::error::Error + Send + Sync + 'static>,
},
/// Error when the object at the location isn't modified
#[error("Object at location {} not modified: {}", path, source)]
NotModified {
/// The path to the file
path: String,
/// The wrapped error
source: Box<dyn std::error::Error + Send + Sync + 'static>,
},
/// Error when an operation is not implemented
#[error("Operation {operation} not yet implemented by {implementer}.")]
NotImplemented {
/// What isn't implemented. Should include at least the method
/// name that was called; could also include other relevant
/// subcontexts.
operation: String,
/// Which driver this is that hasn't implemented this operation,
/// to aid debugging in contexts that may be using multiple implementations.
implementer: String,
},
/// Error when the used credentials don't have enough permission
/// to perform the requested operation
#[error(
"The operation lacked the necessary privileges to complete for path {}: {}",
path,
source
)]
PermissionDenied {
/// The path to the file
path: String,
/// The wrapped error
source: Box<dyn std::error::Error + Send + Sync + 'static>,
},
/// Error when the used credentials lack valid authentication
#[error(
"The operation lacked valid authentication credentials for path {}: {}",
path,
source
)]
Unauthenticated {
/// The path to the file
path: String,
/// The wrapped error
source: Box<dyn std::error::Error + Send + Sync + 'static>,
},
/// Error when a configuration key is invalid for the store used
#[error("Configuration key: '{}' is not valid for store '{}'.", key, store)]
UnknownConfigurationKey {
/// The object store used
store: &'static str,
/// The configuration key used
key: String,
},
}
impl From<Error> for std::io::Error {
fn from(e: Error) -> Self {
let kind = match &e {
Error::NotFound { .. } => std::io::ErrorKind::NotFound,
_ => std::io::ErrorKind::Other,
};
Self::new(kind, e)
}
}
#[cfg(test)]
mod tests {
use super::*;
use chrono::TimeZone;
macro_rules! maybe_skip_integration {
() => {
if std::env::var("TEST_INTEGRATION").is_err() {
eprintln!("Skipping integration test - set TEST_INTEGRATION");
return;
}
};
}
pub(crate) use maybe_skip_integration;
/// Test that the returned stream does not borrow the lifetime of Path
fn list_store<'a>(
store: &'a dyn ObjectStore,
path_str: &str,
) -> BoxStream<'a, Result<ObjectMeta>> {
let path = Path::from(path_str);
store.list(Some(&path))
}
#[cfg(any(feature = "azure", feature = "aws"))]
pub(crate) async fn signing<T>(integration: &T)
where
T: ObjectStore + signer::Signer,
{
use reqwest::Method;
use std::time::Duration;
let data = Bytes::from("hello world");
let path = Path::from("file.txt");
integration.put(&path, data.clone().into()).await.unwrap();
let signed = integration
.signed_url(Method::GET, &path, Duration::from_secs(60))
.await
.unwrap();
let resp = reqwest::get(signed).await.unwrap();
let loaded = resp.bytes().await.unwrap();
assert_eq!(data, loaded);
}
#[cfg(any(feature = "aws", feature = "azure"))]
pub(crate) async fn tagging<F, Fut>(storage: Arc<dyn ObjectStore>, validate: bool, get_tags: F)
where
F: Fn(Path) -> Fut + Send + Sync,
Fut: std::future::Future<Output = Result<client::HttpResponse>> + Send,
{
use bytes::Buf;
use serde::Deserialize;
use tokio::io::AsyncWriteExt;
use crate::buffered::BufWriter;
#[derive(Deserialize)]
struct Tagging {
#[serde(rename = "TagSet")]
list: TagList,
}
#[derive(Debug, Deserialize)]
struct TagList {
#[serde(rename = "Tag")]
tags: Vec<Tag>,
}
#[derive(Debug, Deserialize, Eq, PartialEq)]
#[serde(rename_all = "PascalCase")]
struct Tag {
key: String,
value: String,
}
let tags = vec![
Tag {
key: "foo.com=bar/s".to_string(),
value: "bananas/foo.com-_".to_string(),
},
Tag {
key: "namespace/key.foo".to_string(),
value: "value with a space".to_string(),
},
];
let mut tag_set = TagSet::default();
for t in &tags {
tag_set.push(&t.key, &t.value)
}
let path = Path::from("tag_test");
storage
.put_opts(&path, "test".into(), tag_set.clone().into())
.await
.unwrap();
let multi_path = Path::from("tag_test_multi");
let mut write = storage
.put_multipart_opts(&multi_path, tag_set.clone().into())
.await
.unwrap();
write.put_part("foo".into()).await.unwrap();
write.complete().await.unwrap();
let buf_path = Path::from("tag_test_buf");
let mut buf = BufWriter::new(storage, buf_path.clone()).with_tags(tag_set);
buf.write_all(b"foo").await.unwrap();
buf.shutdown().await.unwrap();
// Write should always succeed, but certain configurations may simply ignore tags
if !validate {
return;
}
for path in [path, multi_path, buf_path] {
let resp = get_tags(path.clone()).await.unwrap();
let body = resp.into_body().bytes().await.unwrap();
let mut resp: Tagging = quick_xml::de::from_reader(body.reader()).unwrap();
resp.list.tags.sort_by(|a, b| a.key.cmp(&b.key));
assert_eq!(resp.list.tags, tags);
}
}
#[tokio::test]
async fn test_list_lifetimes() {
let store = memory::InMemory::new();
let mut stream = list_store(&store, "path");
assert!(stream.next().await.is_none());
}
#[test]
fn test_preconditions() {
let mut meta = ObjectMeta {
location: Path::from("test"),
last_modified: Utc.timestamp_nanos(100),
size: 100,
e_tag: Some("123".to_string()),
version: None,
};
let mut options = GetOptions::default();
options.check_preconditions(&meta).unwrap();
options.if_modified_since = Some(Utc.timestamp_nanos(50));
options.check_preconditions(&meta).unwrap();
options.if_modified_since = Some(Utc.timestamp_nanos(100));
options.check_preconditions(&meta).unwrap_err();
options.if_modified_since = Some(Utc.timestamp_nanos(101));
options.check_preconditions(&meta).unwrap_err();
options = GetOptions::default();
options.if_unmodified_since = Some(Utc.timestamp_nanos(50));
options.check_preconditions(&meta).unwrap_err();
options.if_unmodified_since = Some(Utc.timestamp_nanos(100));
options.check_preconditions(&meta).unwrap();
options.if_unmodified_since = Some(Utc.timestamp_nanos(101));
options.check_preconditions(&meta).unwrap();
options = GetOptions::default();
options.if_match = Some("123".to_string());
options.check_preconditions(&meta).unwrap();
options.if_match = Some("123,354".to_string());
options.check_preconditions(&meta).unwrap();
options.if_match = Some("354, 123,".to_string());
options.check_preconditions(&meta).unwrap();
options.if_match = Some("354".to_string());
options.check_preconditions(&meta).unwrap_err();
options.if_match = Some("*".to_string());
options.check_preconditions(&meta).unwrap();
// If-Match takes precedence
options.if_unmodified_since = Some(Utc.timestamp_nanos(200));
options.check_preconditions(&meta).unwrap();
options = GetOptions::default();
options.if_none_match = Some("123".to_string());
options.check_preconditions(&meta).unwrap_err();
options.if_none_match = Some("*".to_string());
options.check_preconditions(&meta).unwrap_err();
options.if_none_match = Some("1232".to_string());
options.check_preconditions(&meta).unwrap();
options.if_none_match = Some("23, 123".to_string());
options.check_preconditions(&meta).unwrap_err();
// If-None-Match takes precedence
options.if_modified_since = Some(Utc.timestamp_nanos(10));
options.check_preconditions(&meta).unwrap_err();
// Check missing ETag
meta.e_tag = None;
options = GetOptions::default();
options.if_none_match = Some("*".to_string()); // Fails if any file exists
options.check_preconditions(&meta).unwrap_err();
options = GetOptions::default();
options.if_match = Some("*".to_string()); // Passes if file exists
options.check_preconditions(&meta).unwrap();
}
#[test]
#[cfg(feature = "http")]
fn test_reexported_types() {
// Test HeaderMap
let mut headers = HeaderMap::new();
headers.insert("content-type", HeaderValue::from_static("text/plain"));
assert_eq!(headers.len(), 1);
// Test HeaderValue
let value = HeaderValue::from_static("test-value");
assert_eq!(value.as_bytes(), b"test-value");
// Test Extensions
let mut extensions = Extensions::new();
extensions.insert("test-key");
assert!(extensions.get::<&str>().is_some());
}
#[test]
fn test_get_options_builder() {
let dt = Utc::now();
let extensions = Extensions::new();
let options = GetOptions::new();
// assert defaults
assert_eq!(options.if_match, None);
assert_eq!(options.if_none_match, None);
assert_eq!(options.if_modified_since, None);
assert_eq!(options.if_unmodified_since, None);
assert_eq!(options.range, None);
assert_eq!(options.version, None);
assert!(!options.head);
assert!(options.extensions.get::<&str>().is_none());
let options = options
.with_if_match(Some("etag-match"))
.with_if_none_match(Some("etag-none-match"))
.with_if_modified_since(Some(dt))
.with_if_unmodified_since(Some(dt))
.with_range(Some(0..100))
.with_version(Some("version-1"))
.with_head(true)
.with_extensions(extensions.clone());
assert_eq!(options.if_match, Some("etag-match".to_string()));
assert_eq!(options.if_none_match, Some("etag-none-match".to_string()));
assert_eq!(options.if_modified_since, Some(dt));
assert_eq!(options.if_unmodified_since, Some(dt));
assert_eq!(options.range, Some(GetRange::Bounded(0..100)));
assert_eq!(options.version, Some("version-1".to_string()));
assert!(options.head);
assert_eq!(options.extensions.get::<&str>(), extensions.get::<&str>());
}
fn takes_generic_object_store<T: ObjectStore>(store: T) {
// This function is just to ensure that the trait bounds are satisfied
let _ = store;
}
#[test]
fn test_dyn_impl() {
let store: Arc<dyn ObjectStore> = Arc::new(memory::InMemory::new());
takes_generic_object_store(store);
let store: Box<dyn ObjectStore> = Box::new(memory::InMemory::new());
takes_generic_object_store(store);
}
#[test]
fn test_generic_impl() {
let store = Arc::new(memory::InMemory::new());
takes_generic_object_store(store);
let store = Box::new(memory::InMemory::new());
takes_generic_object_store(store);
}
}