OpenDAL 
Open Data Access Layer: Access data freely, painless, and efficiently
You may be looking for:
Services
- azblob: Azure Storage Blob services.
- fs: POSIX alike file system.
- hdfs: Hadoop Distributed File System(HDFS).
- http: HTTP read-only services.
- memory: In memory backend.
- s3: AWS S3 alike services.
Features
- Access different storage system in the same way
- Native decompress support
- Native service-side encryption support
- 100% documents covered
- Behavior tests for all services
Quickstart
use anyhow::Result;
use futures::StreamExt;
use opendal::ObjectMode;
use opendal::Operator;
use opendal::Metadata;
use opendal::Object;
use opendal::ObjectStreamer;
use opendal::Scheme;
#[tokio::main]
async fn main() -> Result<()> {
// Init Operator from env.
let op = Operator::from_env(Scheme::S3).await?;
// Create object handler.
let o: Object = op.object("test_file");
// Write data info object;
let _: () = o.write("Hello, World!").await?;
// Read data from object;
let bs: Vec<u8> = o.read().await?;
// Read range from object;
let bs: Vec<u8> = o.range_read(1..=11).await?;
// Get object's Metadata
let meta: Metadata = o.metadata().await?;
let path: &str = meta.path();
let mode: ObjectMode = meta.mode();
let length: u64 = meta.content_length();
let content_md5: Option<String> = meta.content_md5();
// Delete object.
let _: () = o.delete().await?;
// List dir object.
let o: Object = op.object("test_dir/");
let mut obs: ObjectStreamer = o.list().await?;
while let Some(entry) = obs.next().await {
let entry: Object = entry?;
}
Ok(())
}More examples could be found at Documentation.
Projects
- databend: A modern Elasticity and Performance cloud data warehouse.
Contributing
Check out the CONTRIBUTING.md guide for more details on getting started with contributing to this project.
Getting help
Submit issues for bug report or asking questions in discussion.