Add Qdrant as vector database (#580)

Co-authored-by: Thorsten Sommer <SommerEngineering@users.noreply.github.com>

runtime/src/certificate_factory.rs

@@ -0,0 +1,32 @@
+use log::info;
+use rcgen::generate_simple_self_signed;
+use sha2::{Sha256, Digest};
+
+pub struct Certificate {
+    pub certificate: Vec<u8>,
+    pub private_key: Vec<u8>,
+    pub fingerprint: String,
+}
+
+pub fn generate_certificate() -> Certificate {
+    
+    let subject_alt_names = vec!["localhost".to_string()];
+    let certificate_data = generate_simple_self_signed(subject_alt_names).unwrap();
+    let certificate_binary_data = certificate_data.cert.der().to_vec();
+
+    let certificate_fingerprint = Sha256::digest(certificate_binary_data).to_vec();
+    let certificate_fingerprint = certificate_fingerprint.iter().fold(String::new(), |mut result, byte| {
+        result.push_str(&format!("{:02x}", byte));
+        result
+    });
+
+    let certificate_fingerprint = certificate_fingerprint.to_uppercase();
+    
+    info!("Certificate fingerprint: '{certificate_fingerprint}'.");
+    
+    Certificate {
+        certificate: certificate_data.cert.pem().as_bytes().to_vec(),
+        private_key: certificate_data.signing_key.serialize_pem().as_bytes().to_vec(),
+        fingerprint: certificate_fingerprint.clone()
+    }
+}