Time and metadata improvements

src/util/time.rs

@@ -0,0 +1,16 @@
+use chrono::{SecondsFormat, TimeZone, Utc};
+use std::time::{SystemTime, UNIX_EPOCH};
+
+pub fn now_msec() -> u64 {
+	SystemTime::now()
+		.duration_since(UNIX_EPOCH)
+		.expect("Fix your clock :o")
+		.as_millis() as u64
+}
+
+pub fn msec_to_rfc3339(msecs: u64) -> String {
+	let secs = msecs as i64 / 1000;
+	let nanos = (msecs as i64 % 1000) as u32 * 1_000_000;
+	let timestamp = Utc.timestamp(secs, nanos);
+	timestamp.to_rfc3339_opts(SecondsFormat::Secs, true)
+}