HugoCasa opened a new issue, #419:
URL: https://github.com/apache/arrow-rs-object-store/issues/419
**Describe the bug**
When building a GCS client in `object_store`, if the provided private key is
malformed, the builder panics instead of returning an error. This breaks
expected behavior and makes error handling impossible.
**To Reproduce**
```rust
use object_store::gcp::GoogleCloudStorageBuilder;
#[tokio::main]
async fn main() {
let client_builder = GoogleCloudStorageBuilder::new()
.with_bucket_name("asd")
.with_service_account_key("{\"private_key\": \"-----BEGIN PRIVATE
KEY-----\", \"private_key_id\": \"hey\", \"client_email\": \"a...@asd.com\",
\"type\": \"service_account\"}");
if let Err(err) = client_builder.build() {
println!("Error: {:?}", err);
}
}
```
```
thread 'main' panicked at
XXX/object_store-0.12.2/src/gcp/credential.rs:134:53:
called `Result::unwrap()` on an `Err` value: Custom { kind: InvalidData,
error: "section end \"-----END PRIVATE KEY-----\" missing" }
```
**Expected behavior**
The builder should return an error if the private key is malformed, not
panic.
**Additional context**
The panic occurs due to this code:
```rust
// Reading from string is infallible
match rustls_pemfile::read_one(&mut reader).unwrap() {
Some(Item::Pkcs8Key(key)) => Self::from_pkcs8(key.secret_pkcs8_der()),
Some(Item::Pkcs1Key(key)) => Self::from_der(key.secret_pkcs1_der()),
_ => Err(Error::MissingKey),
}
```
The `unwrap()` assumes infallibility, which is incorrect for malformed
inputs.
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