bwrite command does not support binary data types

[tmyoda]

Using binary types with 'bwrite' command results in the following error.

dy bwrite --table test  --input tests/resources/test_batch_write.json                                                                                                                                       
[2023-09-13T09:07:17Z ERROR dy::batch] [skip] invalid/unsupported DynamoDB JSON format: Object {"B": String("dGhpcyB0ZXh0IGlzIGJhc2U2NC1lbmNvZGVk")}
[2023-09-13T09:07:17Z ERROR dy::batch] [skip] invalid/unsupported DynamoDB JSON format: Object {"BS": Array [String("dGhpcyB0ZXh0IGlzIGJhc2U2NC1lbmNvZGVk"), String("sdfsdhSRHwFEDw4f")]}

This issue seems to be due to the lack of implementation for B and BS types in the following.

dynein/src/batch.rs

Lines 413 to 475 in f95b9fc

	fn ddbjson_val_to_attrval(ddb_jsonval: &JsonValue) -> Option<AttributeValue> {
	// prepare shared logic that can be used for both SS and NS.
	let set_logic = |val: &JsonValue| -> Vec<String> {
	val.as_array()
	.expect("should be valid JSON array")
	.iter()
	.map(|el| el.as_str().expect("should -> str").to_string())
	.collect::<Vec<String>>()
	};
	// following list of if-else statements would be return value of this function.
	if let Some(x) = ddb_jsonval.get("S") {
	Some(AttributeValue {
	s: Some(x.as_str().unwrap().to_string()),
	..Default::default()
	})
	} else if let Some(x) = ddb_jsonval.get("N") {
	Some(AttributeValue {
	n: Some(x.as_str().unwrap().to_string()),
	..Default::default()
	})
	} else if let Some(x) = ddb_jsonval.get("BOOL") {
	Some(AttributeValue {
	bool: Some(x.as_bool().unwrap()),
	..Default::default()
	})
	} else if let Some(x) = ddb_jsonval.get("SS") {
	Some(AttributeValue {
	ss: Some(set_logic(x)),
	..Default::default()
	})
	} else if let Some(x) = ddb_jsonval.get("NS") {
	Some(AttributeValue {
	ns: Some(set_logic(x)),
	..Default::default()
	})
	} else if let Some(x) = ddb_jsonval.get("L") {
	let list_element = x
	.as_array()
	.unwrap()
	.iter()
	.map(|el| ddbjson_val_to_attrval(el).expect("failed to digest a list element"))
	.collect::<Vec<AttributeValue>>();
	debug!("List Element: {:?}", list_element);
	Some(AttributeValue {
	l: Some(list_element),
	..Default::default()
	})
	} else if let Some(x) = ddb_jsonval.get("M") {
	let inner_map: HashMap<String, AttributeValue> = ddbjson_attributes_to_attrvals(x);
	Some(AttributeValue {
	m: Some(inner_map),
	..Default::default()
	})
	} else if ddb_jsonval.get("NULL").is_some() {
	Some(AttributeValue {
	null: Some(true),
	..Default::default()
	})
	} else {
	None
	}
	}

I will work on this issue.

[tmyoda]

#170 resolved this issue.