src/serde.rs: add serde helpers

proxmox-tools/Cargo.toml

@@ -12,6 +12,9 @@ endian_trait = { version = "0.6", features = ["arrays"] }
 libc = "0.2"
 valgrind_request = { version = "1.1.0", optional = true }
 failure = "0.1"
+serde = { version = "1.0", features = ["derive"] }
+base64 = "0.10"
+chrono = "0.4"
 
 [features]
 default = [ "valgrind" ]

proxmox-tools/src/lib.rs

@@ -4,6 +4,7 @@ use failure::*;
 
 pub mod io;
 pub mod vec;
+pub mod serde;
 
 /// Evaluates to the offset (in bytes) of a given member within a struct
 #[macro_export]

proxmox-tools/src/serde.rs

@@ -0,0 +1,51 @@
+//! Serialization helpers for serde
+
+/// Sertialize DateTime<Local> as RFC3339
+pub mod date_time_as_rfc3339 {
+
+    use chrono::{Local, DateTime};
+    use serde::{Serializer, Deserializer, Deserialize};
+
+    pub fn serialize<S>(time: &DateTime<Local>, serializer: S) -> Result<S::Ok, S::Error>
+        where S: Serializer,
+    {
+        serializer.serialize_str(&time.to_rfc3339())
+    }
+
+    pub fn deserialize<'de, D>(deserializer: D) -> Result<DateTime<Local>, D::Error>
+        where D: Deserializer<'de>
+    {
+        use serde::de::Error;
+        String::deserialize(deserializer)
+            .and_then(|string| {
+                string.parse::<DateTime<Local>>()
+                    .map_err(|err| Error::custom(err.to_string()))
+            })
+    }
+}
+
+
+/// Serialize Vec<u8> as base64 encoded string.
+pub mod bytes_as_base64 {
+
+    use base64;
+    use serde::{Serializer,Deserializer, Deserialize};
+
+    pub fn serialize<S, T>(data: &T, serializer: S) -> Result<S::Ok, S::Error>
+        where T: AsRef<[u8]>,
+              S: Serializer,
+    {
+        serializer.serialize_str(&base64::encode(data.as_ref()))
+    }
+
+    pub fn deserialize<'de, D>(deserializer: D) -> Result<Vec<u8>, D::Error>
+        where D: Deserializer<'de>
+    {
+        use serde::de::Error;
+        String::deserialize(deserializer)
+            .and_then(|string| {
+                base64::decode(&string)
+                    .map_err(|err| Error::custom(err.to_string()))
+            })
+    }
+}