feat: add threadpool for iterator threads, bug fixes, tracing_flame support

src/utils.rs

@@ -9,6 +9,7 @@ use std::{
     time::{SystemTime, UNIX_EPOCH},
 };
 
+#[tracing::instrument]
 pub fn millis_since_unix_epoch() -> u64 {
     SystemTime::now()
         .duration_since(UNIX_EPOCH)
@@ -48,16 +49,19 @@ pub fn generate_keypair() -> Vec<u8> {
 }
 
 /// Parses the bytes into an u64.
+#[tracing::instrument(skip(bytes))]
 pub fn u64_from_bytes(bytes: &[u8]) -> Result<u64, std::array::TryFromSliceError> {
     let array: [u8; 8] = bytes.try_into()?;
     Ok(u64::from_be_bytes(array))
 }
 
 /// Parses the bytes into a string.
+#[tracing::instrument(skip(bytes))]
 pub fn string_from_bytes(bytes: &[u8]) -> Result<String, std::string::FromUtf8Error> {
     String::from_utf8(bytes.to_vec())
 }
 
+#[tracing::instrument(skip(length))]
 pub fn random_string(length: usize) -> String {
     thread_rng()
         .sample_iter(&rand::distributions::Alphanumeric)
@@ -67,6 +71,7 @@ pub fn random_string(length: usize) -> String {
 }
 
 /// Calculate a new hash for the given password
+#[tracing::instrument(skip(password))]
 pub fn calculate_hash(password: &str) -> Result<String, argon2::Error> {
     let hashing_config = Config {
         variant: Variant::Argon2id,
@@ -77,6 +82,7 @@ pub fn calculate_hash(password: &str) -> Result<String, argon2::Error> {
     argon2::hash_encoded(password.as_bytes(), salt.as_bytes(), &hashing_config)
 }
 
+#[tracing::instrument(skip(iterators, check_order))]
 pub fn common_elements(
     mut iterators: impl Iterator<Item = impl Iterator<Item = Vec<u8>>>,
     check_order: impl Fn(&[u8], &[u8]) -> Ordering,
@@ -104,6 +110,7 @@ pub fn common_elements(
 /// Fallible conversion from any value that implements `Serialize` to a `CanonicalJsonObject`.
 ///
 /// `value` must serialize to an `serde_json::Value::Object`.
+#[tracing::instrument(skip(value))]
 pub fn to_canonical_object<T: serde::Serialize>(
     value: T,
 ) -> Result<CanonicalJsonObject, CanonicalJsonError> {
@@ -117,6 +124,7 @@ pub fn to_canonical_object<T: serde::Serialize>(
     }
 }
 
+#[tracing::instrument(skip(deserializer))]
 pub fn deserialize_from_str<
     'de,
     D: serde::de::Deserializer<'de>,