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A library and CLI tool for copying files to and from cloud storage.
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## 📚 About `cloud-copy`
`cloud-copy` is a library and command line tool for copying files to and from
cloud storage.
### Supported Cloud Services
In addition to the supported cloud services below, `cloud-copy` supports
unauthenticated downloads over HTTP.
#### Azure Blob Storage
Supported remote URLs for [Azure Blob Storage](https://azure.microsoft.com/en-us/products/storage/blobs):
* `az` schemed URLs in the format `az://<account>/<container>/<blob>`.
* `https` schemed URLs in the format `https://<account>.blob.core.windows.net/<container>/<blob>`.
If authentication is required, the following environment variables may be set
when invoking `cloud-copy`:
* `AZURE_ACCOUNT_NAME` - the Azure Storage account name to use for
authentication.
* `AZURE_ACCESS_KEY` - the Azure Storage account key to use for authentication.
#### AWS S3
Supported remote URLs for [S3 Storage](https://aws.amazon.com/s3/):
* `s3` schemed URLs in the format: `s3://<bucket>/<object>` (note: uses the
default region).
* `https` schemed URLs in the format `https://<bucket>.s3.<region>.amazonaws.com/<object>`.
* `https` schemed URLs in the format `https://<region>.s3.amazonaws.com/<bucket>/<object>`.
If authentication is required, the following environment variables may be set
when invoking `cloud-copy`:
* `AWS_ACCESS_KEY_ID` - the AWS access key ID to use for authentication.
* `AWS_SECRET_ACCESS_KEY` - the AWS secret access key to use for authentication.
* `AWS_DEFAULT_REGION` - the default region to use for any `s3://` URLs.
#### Google Cloud Storage
Supported remote URLs for [Google Cloud Storage](https://cloud.google.com/storage):
* `gs` schemed URLs in the format: `gs://<bucket>/<object>`.
* `https` schemed URLs in the format `https://<bucket>.storage.googleapis.com/<object>`.
* `https` schemed URLs in the format `https://storage.googleapis.com/<bucket>/<object>`.
Note that [HMAC authentication](https://cloud.google.com/storage/docs/authentication/hmackeys) is used for Google Cloud Storage access.
If authentication is required, the following environment variables may be set
when invoking `cloud-copy`:
* `GOOGLE_HMAC_ACCESS_KEY` - the HMAC access key to use for authentication.
* `GOOGLE_HMAC_SECRET` - the HMAC secret to use for authentication.
## 🚀 Getting Started
### Installing Rust
Install a Rust toolchain via [`rustup`](https://rustup.rs/).
### Installing `cloud-copy`
To install `cloud-copy`, run the following command:
```bash
cargo install --features=cli cloud-copy
```
### Using `cloud-copy`
#### Uploading Files
A file or directory may be transferred to cloud storage by invoking
`cloud-copy`:
```bash
$ cloud-copy $SRC $DEST
```
Where `$SRC` is the path to the local file or directory to upload and `$DEST`
is a supported cloud storage service URL.
#### Downloading Files
A file or directory may be transferred from cloud storage by invoking
`cloud-copy`:
```bash
$ cloud-copy $SRC $DEST
```
Where `$SRC` is a supported cloud storage service URL and `$DEST` is the local
path to copy the file or directory to.
## 🧠 Running Automated Tests
Automated tests rely on having the following cloud service emulators installed:
* [Azurite](https://learn.microsoft.com/en-us/azure/storage/common/storage-use-azurite?tabs=visual-studio%2Cblob-storage)
for Azure Blob Storage.
* [Localstack](https://github.com/localstack/localstack) for AWS S3.
Use the following command to run Azurite in a Docker container:
```bash
docker run -p 10000:10000 mcr.microsoft.com/azure-storage/azurite azurite -l /data --blobHost 0.0.0.0 --loose
```
Use the following command to run Localstack in a Docker container:
```bash
docker run -p 4566:4566 localstack/localstack:s3-latest
```
The tests expect a container/bucket with the name `cloud-copy-test` to be
present.
To create the container with Azurite, use the Azure CLI:
```bash
az storage container create --name cloud-copy-test --connection-string "DefaultEndpointsProtocol=http;AccountName=devstoreaccount1;AccountKey=Eby8vdM02xNOcqFlqUwJPLlmEtlCDXJ1OUzFT50uSRZ6IFsuFq2UVErCz4I6tq/K1SZFPTOtr/KBHBeksoGMGw==;BlobEndpoint=http://127.0.0.1:10000/devstoreaccount1"
```
To create the bucket with Localstack, use the `awslocal` tool:
```bash
awslocal s3api create-bucket --bucket cloud-copy-test
```
Finally, run the tests:
```bash
cargo test --all
```
Note: the Azure tests expect `*.blob.core.windows.net.localhost` to resolve to
`127.0.0.1`.
## ✅ Submitting Pull Requests
Before submitting any pull requests, please make sure the code passes the
following checks (from the root directory).
```bash
# Run the project's tests.
cargo test --all-features
# Run the tests for the examples.
cargo test --examples --all-features
# Ensure the project doesn't have any linting warnings.
cargo clippy --all-features
# Ensure the project passes `cargo fmt`.
cargo fmt --check
# Ensure the docs build.
cargo doc --all-features
```
## 🤝 Contributing
Contributions, issues and feature requests are welcome! Feel free to check
[issues page](https://github.com/stjude-rust-labs/cloud-copy/issues).
## 📝 License
This project is licensed as either [Apache 2.0][license-apache] or
[MIT][license-mit] at your discretion. Additionally, please see [the
disclaimer](https://github.com/stjude-rust-labs#disclaimer) that applies to all
crates and command line tools made available by St. Jude Rust Labs.
Copyright © 2024-Present [St. Jude Children's Research
Hospital](https://github.com/stjude).
[license-apache]: https://github.com/stjude-rust-labs/cloud-copy/blob/main/LICENSE-APACHE
[license-mit]: https://github.com/stjude-rust-labs/cloud-copy/blob/main/LICENSE-MIT