refactor: json conversion (#4893)

* refactor: json type update * test: update test * fix: convert when needed * revert: leave sqlness tests unchanged * fix: fmt * refactor: just refactor * Apply suggestions from code review Co-authored-by: Weny Xu <wenymedia@gmail.com> * refactor: parse jsonb first * test: add bad cases * Update src/datatypes/src/vectors/binary.rs Co-authored-by: Weny Xu <wenymedia@gmail.com> * fix: fmt * fix: fix clippy/check --------- Co-authored-by: Weny Xu <wenymedia@gmail.com>
GreptimeTeam · Oct 29, 2024 · 8ed5bc5 · 8ed5bc5
1 parent 9ded314
commit 8ed5bc5
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Showing 8 changed files with 132 additions and 10 deletions.
diff --git a/Cargo.lock b/Cargo.lock
diff --git a/Cargo.toml b/Cargo.toml
@@ -125,7 +125,7 @@ greptime-proto = { git = "https://github.com/GreptimeTeam/greptime-proto.git", r
 humantime = "2.1"
 humantime-serde = "1.1"
 itertools = "0.10"
-jsonb = { git = "https://github.com/datafuselabs/jsonb.git", rev = "46ad50fc71cf75afbf98eec455f7892a6387c1fc", default-features = false }
+jsonb = { git = "https://github.com/databendlabs/jsonb.git", rev = "46ad50fc71cf75afbf98eec455f7892a6387c1fc", default-features = false }
 lazy_static = "1.4"
 meter-core = { git = "https://github.com/GreptimeTeam/greptime-meter.git", rev = "a10facb353b41460eeb98578868ebf19c2084fac" }
 mockall = "0.11.4"

diff --git a/src/datatypes/src/error.rs b/src/datatypes/src/error.rs
@@ -189,6 +189,13 @@ pub enum Error {
         location: Location,
     },
 
+    #[snafu(display("Invalid JSON text: {}", value))]
+    InvalidJson {
+        value: String,
+        #[snafu(implicit)]
+        location: Location,
+    },
+
     #[snafu(display("Value exceeds the precision {} bound", precision))]
     ValueExceedsPrecision {
         precision: u8,
@@ -222,7 +229,8 @@ impl ErrorExt for Error {
             | DefaultValueType { .. }
             | DuplicateMeta { .. }
             | InvalidTimestampPrecision { .. }
-            | InvalidPrecisionOrScale { .. } => StatusCode::InvalidArguments,
+            | InvalidPrecisionOrScale { .. }
+            | InvalidJson { .. } => StatusCode::InvalidArguments,
 
             ValueExceedsPrecision { .. }
             | CastType { .. }

diff --git a/src/datatypes/src/lib.rs b/src/datatypes/src/lib.rs
@@ -13,6 +13,7 @@
 // limitations under the License.
 
 #![feature(let_chains)]
+#![feature(assert_matches)]
 
 pub mod arrow_array;
 pub mod data_type;

diff --git a/src/datatypes/src/vectors/binary.rs b/src/datatypes/src/vectors/binary.rs
@@ -36,6 +36,36 @@ impl BinaryVector {
     pub(crate) fn as_arrow(&self) -> &dyn Array {
         &self.array
     }
+
+    /// Creates a new binary vector of JSONB from a binary vector.
+    /// The binary vector must contain valid JSON strings.
+    pub fn convert_binary_to_json(&self) -> Result<BinaryVector> {
+        let arrow_array = self.to_arrow_array();
+        let mut vector = vec![];
+        for binary in arrow_array
+            .as_any()
+            .downcast_ref::<BinaryArray>()
+            .unwrap()
+            .iter()
+        {
+            let jsonb = if let Some(binary) = binary {
+                match jsonb::from_slice(binary) {
+                    Ok(jsonb) => Some(jsonb.to_vec()),
+                    Err(_) => {
+                        let s = String::from_utf8_lossy(binary);
+                        return error::InvalidJsonSnafu {
+                            value: s.to_string(),
+                        }
+                        .fail();
+                    }
+                }
+            } else {
+                None
+            };
+            vector.push(jsonb);
+        }
+        Ok(BinaryVector::from(vector))
+    }
 }
 
 impl From<BinaryArray> for BinaryVector {
@@ -233,6 +263,8 @@ vectors::impl_try_from_arrow_array_for_vector!(BinaryArray, BinaryVector);
 
 #[cfg(test)]
 mod tests {
+    use std::assert_matches::assert_matches;
+
     use arrow::datatypes::DataType as ArrowDataType;
     use common_base::bytes::Bytes;
     use serde_json;
@@ -383,4 +415,52 @@ mod tests {
         assert_eq!(b"four", vector.get_data(3).unwrap());
         assert_eq!(builder.len(), 4);
     }
+
+    #[test]
+    fn test_binary_json_conversion() {
+        // json strings
+        let json_strings = vec![
+            b"{\"hello\": \"world\"}".to_vec(),
+            b"{\"foo\": 1}".to_vec(),
+            b"123".to_vec(),
+        ];
+        let json_vector = BinaryVector::from(json_strings.clone())
+            .convert_binary_to_json()
+            .unwrap();
+        let jsonbs = json_strings
+            .iter()
+            .map(|v| jsonb::parse_value(v).unwrap().to_vec())
+            .collect::<Vec<_>>();
+        for i in 0..3 {
+            assert_eq!(
+                json_vector.get_ref(i).as_binary().unwrap().unwrap(),
+                jsonbs.get(i).unwrap().as_slice()
+            );
+        }
+
+        // jsonb
+        let json_vector = BinaryVector::from(jsonbs.clone())
+            .convert_binary_to_json()
+            .unwrap();
+        for i in 0..3 {
+            assert_eq!(
+                json_vector.get_ref(i).as_binary().unwrap().unwrap(),
+                jsonbs.get(i).unwrap().as_slice()
+            );
+        }
+
+        // binary with jsonb header (0x80, 0x40, 0x20)
+        let binary_with_jsonb_header: Vec<u8> = [0x80, 0x23, 0x40, 0x22].to_vec();
+        let error = BinaryVector::from(vec![binary_with_jsonb_header])
+            .convert_binary_to_json()
+            .unwrap_err();
+        assert_matches!(error, error::Error::InvalidJson { .. });
+
+        // invalid json string
+        let json_strings = vec![b"{\"hello\": \"world\"".to_vec()];
+        let error = BinaryVector::from(json_strings)
+            .convert_binary_to_json()
+            .unwrap_err();
+        assert_matches!(error, error::Error::InvalidJson { .. });
+    }
 }
diff --git a/src/datatypes/src/vectors/operations.rs b/src/datatypes/src/vectors/operations.rs
@@ -18,6 +18,8 @@ mod find_unique;
 mod replicate;
 mod take;
 
+use std::sync::Arc;
+
 use common_base::BitVec;
 
 use crate::error::{self, Result};
@@ -89,6 +91,12 @@ macro_rules! impl_scalar_vector_op {
             }
 
             fn cast(&self, to_type: &ConcreteDataType) -> Result<VectorRef> {
+                if to_type == &ConcreteDataType::json_datatype() {
+                    if let Some(vector) = self.as_any().downcast_ref::<BinaryVector>() {
+                        let json_vector = vector.convert_binary_to_json()?;
+                        return Ok(Arc::new(json_vector) as VectorRef);
+                    }
+                }
                 cast::cast_non_constant!(self, to_type)
             }
 

diff --git a/src/servers/src/postgres/types.rs b/src/servers/src/postgres/types.rs
@@ -961,7 +961,7 @@ pub(super) fn parameters_to_scalar_values(
                 if let Some(server_type) = &server_type {
                     match server_type {
                         ConcreteDataType::Binary(_) => {
-                            ScalarValue::Binary(data.map(|d| jsonb::Value::from(d).to_vec()))
+                            ScalarValue::Binary(data.map(|d| d.to_string().into_bytes()))
                         }
                         _ => {
                             return Err(invalid_parameter_error(
@@ -971,7 +971,7 @@ pub(super) fn parameters_to_scalar_values(
                         }
                     }
                 } else {
-                    ScalarValue::Binary(data.map(|d| jsonb::Value::from(d).to_vec()))
+                    ScalarValue::Binary(data.map(|d| d.to_string().into_bytes()))
                 }
             }
             _ => Err(invalid_parameter_error(

diff --git a/tests-integration/tests/sql.rs b/tests-integration/tests/sql.rs
@@ -145,7 +145,7 @@ pub async fn test_mysql_crud(store_type: StorageType) {
         .unwrap();
 
     sqlx::query(
-        "create table demo(i bigint, ts timestamp time index default current_timestamp, d date default null, dt datetime default null, b blob default null)",
+        "create table demo(i bigint, ts timestamp time index default current_timestamp, d date default null, dt datetime default null, b blob default null, j json default null)",
     )
     .execute(&pool)
     .await
@@ -158,18 +158,30 @@ pub async fn test_mysql_crud(store_type: StorageType) {
         let d = NaiveDate::from_yo_opt(2015, 100).unwrap();
         let hello = format!("hello{i}");
         let bytes = hello.as_bytes();
-        sqlx::query("insert into demo values(?, ?, ?, ?, ?)")
+        let jsons = serde_json::json!({
+            "code": i,
+            "success": true,
+            "payload": {
+                "features": [
+                    "serde",
+                    "json"
+                ],
+                "homepage": null
+            }
+        });
+        sqlx::query("insert into demo values(?, ?, ?, ?, ?, ?)")
             .bind(i)
             .bind(i)
             .bind(d)
             .bind(dt)
             .bind(bytes)
+            .bind(jsons)
             .execute(&pool)
             .await
             .unwrap();
     }
 
-    let rows = sqlx::query("select i, d, dt, b from demo")
+    let rows = sqlx::query("select i, d, dt, b, j from demo")
         .fetch_all(&pool)
         .await
         .unwrap();
@@ -180,6 +192,7 @@ pub async fn test_mysql_crud(store_type: StorageType) {
         let d: NaiveDate = row.get("d");
         let dt: DateTime<Utc> = row.get("dt");
         let bytes: Vec<u8> = row.get("b");
+        let json: serde_json::Value = row.get("j");
         assert_eq!(ret, i as i64);
         let expected_d = NaiveDate::from_yo_opt(2015, 100).unwrap();
         assert_eq!(expected_d, d);
@@ -194,6 +207,18 @@ pub async fn test_mysql_crud(store_type: StorageType) {
             format!("{}", dt.format("%Y-%m-%d %H:%M:%S"))
         );
         assert_eq!(format!("hello{i}"), String::from_utf8_lossy(&bytes));
+        let expected_j = serde_json::json!({
+            "code": i,
+            "success": true,
+            "payload": {
+                "features": [
+                    "serde",
+                    "json"
+                ],
+                "homepage": null
+            }
+        });
+        assert_eq!(json, expected_j);
     }
 
     let rows = sqlx::query("select i from demo where i=?")
@@ -396,7 +421,7 @@ pub async fn test_postgres_crud(store_type: StorageType) {
         let dt = d.and_hms_opt(0, 0, 0).unwrap().and_utc().timestamp_millis();
         let bytes = "hello".as_bytes();
         let json = serde_json::json!({
-            "code": 200,
+            "code": i,
             "success": true,
             "payload": {
                 "features": [
@@ -444,7 +469,7 @@ pub async fn test_postgres_crud(store_type: StorageType) {
         assert_eq!("hello".as_bytes(), bytes);
 
         let expected_j = serde_json::json!({
-            "code": 200,
+            "code": i,
             "success": true,
             "payload": {
                 "features": [