fn parse_debezium(
    record: Vec<(String, Value)>,
) -> Result<Option<Vec<(String, i64)>>, anyhow::Error> {
    let mut collections = vec![];
    let mut event_count = 0;
    for (key, value) in record {
        match (key.as_str(), value) {
            ("data_collections", Value::Union { inner: value, .. }) => match *value {
                Value::Array(items) => {
                    for v in items {
                        match v {
                            Value::Record(item) => {
                                let mut collection: Option<String> = None;
                                let mut event_count: Option<i64> = None;
                                for (k, v) in item {
                                    match (k.as_str(), v) {
                                        ("data_collection", Value::String(data)) => {
                                            collection = Some(data)
                                        }
                                        ("data_collection", v) => {
                                            bail!(
                                                "Expected string for field 'data_collection', got {:?}",
                                                v
                                            );
                                        }
                                        ("event_count", Value::Long(e)) => event_count = Some(e),
                                        ("event_count", v) => {
                                            bail!(
                                                "Expected long for field 'event_count', got {:?}",
                                                v
                                            );
                                        }
                                        (_, _) => (),
                                    }
                                }
                                match (collection, event_count) {
                                    (Some(c), Some(e)) => collections.push((c, e)),
                                    (c, w) => {
                                        bail!(
                                        "Missing count or collection name. Parsed collection={:?}, event_count={:?}",
                                        c, w);
                                    }
                                }
                            }
                            _ => {
                                bail!("Record expected, got {:?}", v);
                            }
                        }
                    }
                }
                _ => {
                    bail!(
                        "Expected Array for field 'data_collections', got {:?}",
                        value
                    );
                }
            },
            ("data_collections", v) => {
                bail!("Expection Union for field 'data_collections', got {:?}", v);
            }
            ("event_count", Value::Union { inner: value, .. }) => match *value {
                Value::Long(e) => event_count = e,
                _ => {
                    bail!("Expected Long for field 'event_count', got {:?}", value);
                }
            },
            ("event_count", v) => {
                bail!("Expected Union for field 'event_count', got {:?}", v);
            }
            ("status", Value::String(status)) => match status.as_str() {
                "BEGIN" => return Ok(None),
                "END" => (),
                _ => bail!(
                    "Expect 'BEGIN' or 'END' for field 'status', got {:?}",
                    status
                ),
            },
            ("status", v) => {
                bail!("Expected String for field 'status', got {:?}", v);
            }
            (_, _) => (),
        }
    }
    if event_count < 0 {
        bail!("Expected non-negative event count, got '{}'", event_count);
    }
    if collections.iter().map(|(_, c)| c).sum::<i64>() != event_count {
        bail!(
            "Event count '{:?}' does not match parsed collections: {:?}",
            event_count,
            collections
        );
    }
    Ok(Some(collections))
}
/// A debezium record contains a set of update counts for each topic that the transaction
/// updated. This function extracts the set of (topic, update_count) as a vector if
/// processing an END message. It returns NONE otherwise.
A debezium record contains a set of update counts for each topic that the transaction
updated. This function extracts the set of (topic, update_count) as a vector if
processing an END message. It returns NONE otherwise.
A debezium record contains a set of update counts for each topic that the transaction updated . This function extracts the set of ( topic update_count ) as a vector if processing an END message . It returns NONE otherwise .
fn parse_debezium(
    record: Vec<(String, Value)>,
) -> Result<Option<Vec<(String, i64)>>, anyhow::Error> {
    let mut collections = vec![];
    let mut event_count = 0;
    for (key, value) in record {
        match (key.as_str(), value) {
            ("data_collections", Value::Union { inner: value, .. }) => match *value {
                Value::Array(items) => {
                    for v in items {
                        match v {
                            Value::Record(item) => {
                                let mut collection: Option<String> = None;
                                let mut event_count: Option<i64> = None;
                                for (k, v) in item {
                                    match (k.as_str(), v) {
                                        ("data_collection", Value::String(data)) => {
                                            collection = Some(data)
                                        }
                                        ("data_collection", v) => {
                                            bail!(
                                                "Expected string for field 'data_collection', got {:?}",
                                                v
                                            );
                                        }
                                        ("event_count", Value::Long(e)) => event_count = Some(e),
                                        ("event_count", v) => {
                                            bail!(
                                                "Expected long for field 'event_count', got {:?}",
                                                v
                                            );
                                        }
                                        (_, _) => (),
                                    }
                                }
                                match (collection, event_count) {
                                    (Some(c), Some(e)) => collections.push((c, e)),
                                    (c, w) => {
                                        bail!(
                                        "Missing count or collection name. Parsed collection={:?}, event_count={:?}",
                                        c, w);
                                    }
                                }
                            }
                            _ => {
                                bail!("Record expected, got {:?}", v);
                            }
                        }
                    }
                }
                _ => {
                    bail!(
                        "Expected Array for field 'data_collections', got {:?}",
                        value
                    );
                }
            },
            ("data_collections", v) => {
                bail!("Expection Union for field 'data_collections', got {:?}", v);
            }
            ("event_count", Value::Union { inner: value, .. }) => match *value {
                Value::Long(e) => event_count = e,
                _ => {
                    bail!("Expected Long for field 'event_count', got {:?}", value);
                }
            },
            ("event_count", v) => {
                bail!("Expected Union for field 'event_count', got {:?}", v);
            }
            ("status", Value::String(status)) => match status.as_str() {
                "BEGIN" => return Ok(None),
                "END" => (),
                _ => bail!(
                    "Expect 'BEGIN' or 'END' for field 'status', got {:?}",
                    status
                ),
            },
            ("status", v) => {
                bail!("Expected String for field 'status', got {:?}", v);
            }
            (_, _) => (),
        }
    }
    if event_count < 0 {
        bail!("Expected non-negative event count, got '{}'", event_count);
    }
    if collections.iter().map(|(_, c)| c).sum::<i64>() != event_count {
        bail!(
            "Event count '{:?}' does not match parsed collections: {:?}",
            event_count,
            collections
        );
    }
    Ok(Some(collections))
}
fn parse_debezium ( record : Vec < ( String , Value ) > , ) -> Result < Option < Vec < ( String , i64 ) > > , anyhow :: Error > { let mut collections = vec ! [ ] ; let mut event_count = 0 ; for ( key , value ) in record { match ( key . as_str ( ) , value ) { ( " " , Value :: Union { inner : value , .. } ) => match * value { Value :: Array ( items ) => { for v in items { match v { Value :: Record ( item ) => { let mut collection : Option < String > = None ; let mut event_count : Option < i64 > = None ; for ( k , v ) in item { match ( k . as_str ( ) , v ) { ( " " , Value :: String ( data ) ) => { collection = Some ( data ) } ( " " , v ) => { bail ! ( " " v ) ; } ( " " , Value :: Long ( e ) ) => event_count = Some ( e ) , ( " " , v ) => { bail ! ( " " v ) ; } ( _ , _ ) => ( ) , } } match ( collection , event_count ) { ( Some ( c ) , Some ( e ) ) => collections . push ( ( c , e ) ) , ( c , w ) => { bail ! ( " " c w ) ; } } } _ => { bail ! ( " " v ) ; } } } } _ => { bail ! ( " " value ) ; } } , ( " " , v ) => { bail ! ( " " v ) ; } ( " " , Value :: Union { inner : value , .. } ) => match * value { Value :: Long ( e ) => event_count = e , _ => { bail ! ( " " value ) ; } } , ( " " , v ) => { bail ! ( " " v ) ; } ( " " , Value :: String ( status ) ) => match status . as_str ( ) { " " => return Ok ( None ) , " " => ( ) , _ => bail ! ( " " status ) , } , ( " " , v ) => { bail ! ( " " v ) ; } ( _ , _ ) => ( ) , } } if event_count < 0 { bail ! ( " " event_count ) ; } if collections . iter ( ) . map ( | ( _ , c ) | c ) . sum :: < i64 > ( ) != event_count { bail ! ( " " event_count collections ) ; } Ok ( Some ( collections ) ) }
A debezium record contains a set of update counts for each topic that the transaction
updated.
A debezium record contains a set of update counts for each topic that the transaction updated .
record
Vec<(String, Value)>
record
Vec<(String, Value)>