AVRO-3949: [Rust]: Add support for serde to apache_avro::Decimal (#2772)

Signed-off-by: Martin Tzvetanov Grigorov <[email protected]>
apache · Feb 27, 2024 · 30cd024 · 30cd024
1 parent 87f7fd2
commit 30cd024
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Showing 3 changed files with 14 additions and 2 deletions.
diff --git a/lang/rust/Cargo.lock b/lang/rust/Cargo.lock
diff --git a/lang/rust/avro/Cargo.toml b/lang/rust/avro/Cargo.toml
@@ -61,7 +61,7 @@ crc32fast = { default-features = false, version = "1.4.0", optional = true }
 digest = { default-features = false, version = "0.10.7", features = ["core-api"] }
 libflate = { default-features = false, version = "2.0.0", features = ["std"] }
 log = { workspace = true }
-num-bigint = { default-features = false, version = "0.4.4" }
+num-bigint = { default-features = false, version = "0.4.4", features = ["std", "serde"] }
 regex-lite = { default-features = false, version = "0.1.5", features = ["std", "string"] }
 serde = { workspace = true }
 serde_json = { workspace = true }

diff --git a/lang/rust/avro/src/decimal.rs b/lang/rust/avro/src/decimal.rs
@@ -18,7 +18,7 @@
 use crate::{AvroResult, Error};
 use num_bigint::{BigInt, Sign};
 
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, Eq, serde::Serialize, serde::Deserialize)]
 pub struct Decimal {
     value: BigInt,
     len: usize,
@@ -132,4 +132,15 @@ mod tests {
 
         Ok(())
     }
+
+    #[test]
+    fn avro_3949_decimal_serde() -> TestResult {
+        let decimal = Decimal::from(&[1, 2, 3]);
+
+        let ser = serde_json::to_string(&decimal)?;
+        let de = serde_json::from_str(&ser)?;
+        std::assert_eq!(decimal, de);
+
+        Ok(())
+    }
 }