Struct PresignedUrlGenerator 

pub struct PresignedUrlGenerator {
    pub credentials: CloudCredentials,
    pub region: String,
}

Generates presigned URLs using AWS SigV4 / GCS v4 signing.

The implementation is entirely pure Rust — no external cryptographic crates.

Fields

credentials: CloudCredentials

The credentials used for signing.

region: String

AWS / GCS region.

Implementations

impl PresignedUrlGenerator

pub fn new(credentials: CloudCredentials, region: impl Into<String>) -> Self

Create a new generator.

pub fn canonical_query_string(&self, params: &[(String, String)]) -> String

Build a sorted canonical query string from key-value pairs.

pub fn generate_s3( &self, url: &ObjectUrl, config: &PresignedUrlConfig, timestamp_unix: u64, ) -> Result<String, CloudError>

Generate an AWS SigV4 presigned URL.

pub fn generate_gcs( &self, url: &ObjectUrl, config: &PresignedUrlConfig, timestamp_unix: u64, ) -> Result<String, CloudError>

Generate a GCS v4 presigned URL (same signing algorithm as S3 SigV4).