atlas-rs 0.2.0

attested TLS (aTLS) core library for verifying TEE attestations over TLS connections
Documentation 
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//! Compose hash calculation module.
//!
//! Provides SHA256 hashing of AppCompose configurations.

use serde_json::Value;
use sha2::{Digest, Sha256};

/// Calculate SHA256 hash of app compose configuration.
///
/// # Arguments
///
/// * `app_compose` - The app compose configuration as a JSON Value
///
/// # Returns
///
/// SHA256 hash as a lowercase hex string, or an error if serialization fails.
///
/// # Example
///
/// ```
/// use serde_json::json;
/// use atlas_rs::dstack::compose_hash::get_compose_hash;
///
/// let compose = json!({
///     "docker_compose_file": "version: '3'\nservices:\n  app:\n    image: myapp",
///     "runner": "docker-compose"
/// });
///
/// let hash = get_compose_hash(&compose).unwrap();
/// println!("Compose hash: {}", hash);
/// ```
pub fn get_compose_hash(app_compose: &Value) -> Result<String, serde_json::Error> {
    let json_str = serde_json::to_string(app_compose)?;
    let hash = Sha256::digest(json_str.as_bytes());
    Ok(hex::encode(hash))
}