rust_ocpp/v2_0_1/helpers/
datetime_rfc3339.rs

1use chrono::{DateTime, SecondsFormat, Utc};
2use serde::{Deserialize, Deserializer, Serializer};
3pub fn serialize<S>(date: &DateTime<Utc>, serializer: S) -> Result<S::Ok, S::Error>
4where
5    S: Serializer,
6{
7    serializer.serialize_str(&date.to_rfc3339_opts(SecondsFormat::Millis, true))
8}
9
10pub fn deserialize<'de, D>(deserializer: D) -> Result<DateTime<Utc>, D::Error>
11where
12    D: Deserializer<'de>,
13{
14    let s: String = Deserialize::deserialize(deserializer)?;
15    DateTime::parse_from_rfc3339(&s)
16        .map(|dt| dt.with_timezone(&Utc))
17        .map_err(serde::de::Error::custom)
18}
19
20pub mod option {
21    use chrono::{DateTime, SecondsFormat, Utc};
22    use serde::{self, Deserialize, Deserializer, Serializer};
23
24    pub fn serialize<S>(date: &Option<DateTime<Utc>>, serializer: S) -> Result<S::Ok, S::Error>
25    where
26        S: Serializer,
27    {
28        match date {
29            Some(dt) => serializer.serialize_str(&dt.to_rfc3339_opts(SecondsFormat::Millis, true)),
30            None => serializer.serialize_none(),
31        }
32    }
33
34    pub fn deserialize<'de, D>(deserializer: D) -> Result<Option<DateTime<Utc>>, D::Error>
35    where
36        D: Deserializer<'de>,
37    {
38        let opt = Option::<String>::deserialize(deserializer)?;
39        match opt {
40            Some(s) => DateTime::parse_from_rfc3339(&s)
41                .map(|dt| Some(dt.with_timezone(&Utc)))
42                .map_err(serde::de::Error::custom),
43            None => Ok(None),
44        }
45    }
46}
47
48#[cfg(test)]
49mod tests {
50    use super::*;
51    use chrono::{TimeZone, Utc};
52    use serde_json;
53
54    #[test]
55    fn test_serialize_deserialize_datetime() {
56        let naive = Utc
57            .with_ymd_and_hms(2023, 9, 3, 12, 34, 56)
58            .unwrap()
59            .naive_utc();
60        let naive = naive
61            .checked_add_signed(chrono::Duration::milliseconds(789))
62            .unwrap();
63        let dt: DateTime<Utc> = DateTime::from_naive_utc_and_offset(naive, Utc);
64        let json = serde_json::to_string(&dt).unwrap();
65        let deserialized: DateTime<Utc> = serde_json::from_str(&json).unwrap();
66        assert_eq!(dt, deserialized);
67    }
68
69    #[test]
70    fn test_serialize_deserialize_option_some() {
71        let naive = Utc
72            .with_ymd_and_hms(2023, 9, 3, 12, 34, 56)
73            .unwrap()
74            .naive_utc();
75        let naive = naive
76            .checked_add_signed(chrono::Duration::milliseconds(789))
77            .unwrap();
78        let dt: DateTime<Utc> = DateTime::from_naive_utc_and_offset(naive, Utc);
79        let opt_dt = Some(dt);
80        let json = serde_json::to_string(&opt_dt).unwrap();
81        let deserialized: Option<DateTime<Utc>> =
82            option::deserialize(&mut serde_json::Deserializer::from_str(&json)).unwrap();
83        assert_eq!(opt_dt, deserialized);
84    }
85
86    #[test]
87    fn test_serialize_deserialize_option_none() {
88        let opt_dt: Option<DateTime<Utc>> = None;
89        let json = serde_json::to_string(&opt_dt).unwrap();
90        let deserialized: Option<DateTime<Utc>> =
91            option::deserialize(&mut serde_json::Deserializer::from_str(&json)).unwrap();
92        assert_eq!(opt_dt, deserialized);
93    }
94}
rust_ocpp/v2_0_1/helpers/datetime_rfc3339.rs

rust_ocpp/v2_0_1/helpers/
datetime_rfc3339.rs
