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| 1 | +use crate::application::BusinessRejectReason; |
| 2 | +use crate::message::OutboundMessage; |
| 3 | +use hotfix_message::dict::{FieldLocation, FixDatatype}; |
| 4 | +use hotfix_message::message::Message; |
| 5 | +use hotfix_message::session_fields::{REF_MSG_TYPE, REF_SEQ_NUM, TEXT}; |
| 6 | +use hotfix_message::{Buffer, FieldType, HardCodedFixFieldDefinition, Part}; |
| 7 | + |
| 8 | +const BUSINESS_REJECT_REASON: &HardCodedFixFieldDefinition = &HardCodedFixFieldDefinition { |
| 9 | + name: "BusinessRejectReason", |
| 10 | + tag: 380, |
| 11 | + data_type: FixDatatype::Int, |
| 12 | + location: FieldLocation::Body, |
| 13 | +}; |
| 14 | + |
| 15 | +impl<'a> FieldType<'a> for BusinessRejectReason { |
| 16 | + type Error = (); |
| 17 | + type SerializeSettings = (); |
| 18 | + |
| 19 | + fn serialize_with<B>(&self, buffer: &mut B, _settings: Self::SerializeSettings) -> usize |
| 20 | + where |
| 21 | + B: Buffer, |
| 22 | + { |
| 23 | + let value = *self as u32; |
| 24 | + value.serialize(buffer) |
| 25 | + } |
| 26 | + |
| 27 | + fn deserialize(data: &'a [u8]) -> Result<Self, Self::Error> { |
| 28 | + let value = u32::deserialize(data).map_err(|_| ())?; |
| 29 | + match value { |
| 30 | + 0 => Ok(Self::Other), |
| 31 | + 1 => Ok(Self::UnknownId), |
| 32 | + 2 => Ok(Self::UnknownSecurity), |
| 33 | + 3 => Ok(Self::UnsupportedMessageType), |
| 34 | + 4 => Ok(Self::ApplicationNotAvailable), |
| 35 | + 5 => Ok(Self::ConditionallyRequiredFieldMissing), |
| 36 | + 6 => Ok(Self::NotAuthorized), |
| 37 | + 7 => Ok(Self::DeliverToFirmNotAvailable), |
| 38 | + _ => Err(()), |
| 39 | + } |
| 40 | + } |
| 41 | +} |
| 42 | + |
| 43 | +#[derive(Clone, Debug)] |
| 44 | +pub(crate) struct BusinessReject { |
| 45 | + ref_msg_type: String, |
| 46 | + reason: BusinessRejectReason, |
| 47 | + ref_seq_num: Option<u64>, |
| 48 | + text: Option<String>, |
| 49 | +} |
| 50 | + |
| 51 | +impl BusinessReject { |
| 52 | + pub(crate) fn new(ref_msg_type: &str, reason: BusinessRejectReason) -> Self { |
| 53 | + Self { |
| 54 | + ref_msg_type: ref_msg_type.to_string(), |
| 55 | + reason, |
| 56 | + ref_seq_num: None, |
| 57 | + text: None, |
| 58 | + } |
| 59 | + } |
| 60 | + |
| 61 | + pub(crate) fn ref_seq_num(mut self, ref_seq_num: u64) -> Self { |
| 62 | + self.ref_seq_num = Some(ref_seq_num); |
| 63 | + self |
| 64 | + } |
| 65 | + |
| 66 | + pub(crate) fn text(mut self, text: &str) -> Self { |
| 67 | + self.text = Some(text.to_string()); |
| 68 | + self |
| 69 | + } |
| 70 | + |
| 71 | + #[cfg(test)] |
| 72 | + fn parse(message: &Message) -> Self { |
| 73 | + Self { |
| 74 | + #[allow(clippy::expect_used)] |
| 75 | + ref_msg_type: message |
| 76 | + .get::<&str>(REF_MSG_TYPE) |
| 77 | + .expect("ref_msg_type should be present") |
| 78 | + .to_string(), |
| 79 | + #[allow(clippy::expect_used)] |
| 80 | + reason: message |
| 81 | + .get(BUSINESS_REJECT_REASON) |
| 82 | + .expect("reason should be present"), |
| 83 | + ref_seq_num: message.get(REF_SEQ_NUM).ok(), |
| 84 | + text: message.get::<&str>(TEXT).ok().map(|s| s.to_string()), |
| 85 | + } |
| 86 | + } |
| 87 | +} |
| 88 | + |
| 89 | +impl OutboundMessage for BusinessReject { |
| 90 | + fn write(&self, msg: &mut Message) { |
| 91 | + msg.set(REF_MSG_TYPE, self.ref_msg_type.as_str()); |
| 92 | + msg.set(BUSINESS_REJECT_REASON, self.reason); |
| 93 | + |
| 94 | + if let Some(ref_seq_num) = self.ref_seq_num { |
| 95 | + msg.set(REF_SEQ_NUM, ref_seq_num); |
| 96 | + } |
| 97 | + if let Some(text) = &self.text { |
| 98 | + msg.set(TEXT, text.as_str()); |
| 99 | + } |
| 100 | + } |
| 101 | + |
| 102 | + fn message_type(&self) -> &str { |
| 103 | + "j" |
| 104 | + } |
| 105 | +} |
| 106 | + |
| 107 | +#[cfg(test)] |
| 108 | +mod tests { |
| 109 | + use super::*; |
| 110 | + use hotfix_message::message::Message; |
| 111 | + |
| 112 | + #[test] |
| 113 | + fn test_write_business_reject_with_required_fields_only() { |
| 114 | + let reject = BusinessReject::new("D", BusinessRejectReason::UnsupportedMessageType); |
| 115 | + |
| 116 | + let mut msg = Message::new("FIX.4.4", "j"); |
| 117 | + reject.write(&mut msg); |
| 118 | + |
| 119 | + assert_eq!(msg.get::<&str>(REF_MSG_TYPE).unwrap(), "D"); |
| 120 | + assert_eq!( |
| 121 | + msg.get::<BusinessRejectReason>(BUSINESS_REJECT_REASON) |
| 122 | + .unwrap(), |
| 123 | + BusinessRejectReason::UnsupportedMessageType |
| 124 | + ); |
| 125 | + assert!(msg.get::<u64>(REF_SEQ_NUM).is_err()); |
| 126 | + assert!(msg.get::<&str>(TEXT).is_err()); |
| 127 | + } |
| 128 | + |
| 129 | + #[test] |
| 130 | + fn test_write_business_reject_with_all_fields() { |
| 131 | + let reject = BusinessReject::new("8", BusinessRejectReason::NotAuthorized) |
| 132 | + .ref_seq_num(456) |
| 133 | + .text("Not authorized for execution reports"); |
| 134 | + |
| 135 | + let mut msg = Message::new("FIX.4.4", "j"); |
| 136 | + reject.write(&mut msg); |
| 137 | + |
| 138 | + assert_eq!(msg.get::<&str>(REF_MSG_TYPE).unwrap(), "8"); |
| 139 | + assert_eq!( |
| 140 | + msg.get::<BusinessRejectReason>(BUSINESS_REJECT_REASON) |
| 141 | + .unwrap(), |
| 142 | + BusinessRejectReason::NotAuthorized |
| 143 | + ); |
| 144 | + assert_eq!(msg.get::<u64>(REF_SEQ_NUM).unwrap(), 456); |
| 145 | + assert_eq!( |
| 146 | + msg.get::<&str>(TEXT).unwrap(), |
| 147 | + "Not authorized for execution reports" |
| 148 | + ); |
| 149 | + } |
| 150 | + |
| 151 | + #[test] |
| 152 | + fn test_round_trip_serialization() { |
| 153 | + let original = |
| 154 | + BusinessReject::new("D", BusinessRejectReason::ConditionallyRequiredFieldMissing) |
| 155 | + .ref_seq_num(789) |
| 156 | + .text("ClOrdID is required"); |
| 157 | + |
| 158 | + let mut msg = Message::new("FIX.4.4", "j"); |
| 159 | + original.write(&mut msg); |
| 160 | + |
| 161 | + let parsed = BusinessReject::parse(&msg); |
| 162 | + |
| 163 | + assert_eq!(parsed.ref_msg_type, original.ref_msg_type); |
| 164 | + assert_eq!(parsed.reason, original.reason); |
| 165 | + assert_eq!(parsed.ref_seq_num, original.ref_seq_num); |
| 166 | + assert_eq!(parsed.text, original.text); |
| 167 | + } |
| 168 | + |
| 169 | + #[test] |
| 170 | + fn test_round_trip_with_minimal_fields() { |
| 171 | + let original = BusinessReject::new("0", BusinessRejectReason::Other); |
| 172 | + |
| 173 | + let mut msg = Message::new("FIX.4.4", "j"); |
| 174 | + original.write(&mut msg); |
| 175 | + |
| 176 | + let parsed = BusinessReject::parse(&msg); |
| 177 | + |
| 178 | + assert_eq!(parsed.ref_msg_type, original.ref_msg_type); |
| 179 | + assert_eq!(parsed.reason, original.reason); |
| 180 | + assert_eq!(parsed.ref_seq_num, original.ref_seq_num); |
| 181 | + assert_eq!(parsed.text, original.text); |
| 182 | + } |
| 183 | + |
| 184 | + #[test] |
| 185 | + fn test_message_type() { |
| 186 | + let reject = BusinessReject::new("D", BusinessRejectReason::Other); |
| 187 | + assert_eq!(reject.message_type(), "j"); |
| 188 | + } |
| 189 | + |
| 190 | + #[test] |
| 191 | + fn test_all_reject_reasons_round_trip() { |
| 192 | + let reasons = [ |
| 193 | + BusinessRejectReason::Other, |
| 194 | + BusinessRejectReason::UnknownId, |
| 195 | + BusinessRejectReason::UnknownSecurity, |
| 196 | + BusinessRejectReason::UnsupportedMessageType, |
| 197 | + BusinessRejectReason::ApplicationNotAvailable, |
| 198 | + BusinessRejectReason::ConditionallyRequiredFieldMissing, |
| 199 | + BusinessRejectReason::NotAuthorized, |
| 200 | + BusinessRejectReason::DeliverToFirmNotAvailable, |
| 201 | + ]; |
| 202 | + |
| 203 | + for reason in reasons { |
| 204 | + let reject = BusinessReject::new("D", reason); |
| 205 | + let mut msg = Message::new("FIX.4.4", "j"); |
| 206 | + reject.write(&mut msg); |
| 207 | + |
| 208 | + let parsed = BusinessReject::parse(&msg); |
| 209 | + assert_eq!(parsed.reason, reason, "Round-trip failed for {reason:?}"); |
| 210 | + } |
| 211 | + } |
| 212 | +} |
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