open_dis_rust/simulation_management_with_reliability/
action_response_reliable_pdu.rs

1//     open-dis-rust - Rust implementation of the IEEE 1278.1-2012 Distributed Interactive
2//                     Simulation (DIS) application protocol
3//     Copyright (C) 2023 Cameron Howell
4//
5//     Licensed under the BSD 2-Clause License
6
7use crate::common::{
8    dis_error::DISError,
9    entity_id::EntityId,
10    enums::ActionResponseRequestStatus,
11    pdu::Pdu,
12    pdu_header::{PduHeader, PduType, ProtocolFamily},
13};
14use bytes::{Buf, BufMut, BytesMut};
15use std::any::Any;
16
17#[derive(Copy, Clone, Debug)]
18/// Implemented according to IEEE 1278.1-2012 §7.11.8
19pub struct ActionResponseReliablePdu {
20    pub pdu_header: PduHeader,
21    pub originating_entity_id: EntityId,
22    pub receiving_entity_id: EntityId,
23    pub request_id: u32,
24    pub request_status: ActionResponseRequestStatus,
25    pub number_of_fixed_datum_records: u32,
26    pub number_of_variable_datum_records: u32,
27    pub fixed_datum_records: u64,
28    pub variable_datum_records: u64,
29}
30
31impl Default for ActionResponseReliablePdu {
32    fn default() -> Self {
33        ActionResponseReliablePdu {
34            pdu_header: PduHeader::default(
35                PduType::ActionResponseReliable,
36                ProtocolFamily::SimulationManagementWithReliability,
37                56,
38            ),
39            originating_entity_id: EntityId::default(1),
40            receiving_entity_id: EntityId::default(2),
41            request_id: 0,
42            request_status: ActionResponseRequestStatus::default(),
43            number_of_fixed_datum_records: 0,
44            number_of_variable_datum_records: 0,
45            fixed_datum_records: 0,
46            variable_datum_records: 0,
47        }
48    }
49}
50
51impl Pdu for ActionResponseReliablePdu {
52    fn serialize(&mut self, buf: &mut BytesMut) {
53        self.pdu_header.length = u16::try_from(std::mem::size_of_val(self))
54            .expect("The length of the PDU should fit in a u16.");
55        self.pdu_header.serialize(buf);
56        self.originating_entity_id.serialize(buf);
57        self.receiving_entity_id.serialize(buf);
58        buf.put_u32(self.request_id);
59        buf.put_u32(self.request_status as u32);
60        buf.put_u32(self.number_of_fixed_datum_records);
61        buf.put_u32(self.number_of_variable_datum_records);
62        buf.put_u64(self.fixed_datum_records);
63        buf.put_u64(self.variable_datum_records);
64    }
65
66    fn deserialize(mut buffer: BytesMut) -> Result<Self, DISError>
67    where
68        Self: Sized,
69    {
70        let pdu_header = PduHeader::deserialize(&mut buffer);
71        if pdu_header.pdu_type == PduType::ActionResponseReliable {
72            let originating_entity_id = EntityId::deserialize(&mut buffer);
73            let receiving_entity_id = EntityId::deserialize(&mut buffer);
74            let request_id = buffer.get_u32();
75            let request_status = ActionResponseRequestStatus::deserialize(&mut buffer);
76            let number_of_fixed_datum_records = buffer.get_u32();
77            let number_of_variable_datum_records = buffer.get_u32();
78            let mut fixed_datum_records: u64 = 0;
79            for _record in 0..number_of_fixed_datum_records as usize {
80                fixed_datum_records += buffer.get_u64();
81            }
82            let mut variable_datum_records: u64 = 0;
83            for _record in 0..number_of_variable_datum_records as usize {
84                variable_datum_records += buffer.get_u64();
85            }
86
87            Ok(ActionResponseReliablePdu {
88                pdu_header,
89                originating_entity_id,
90                receiving_entity_id,
91                request_id,
92                request_status,
93                number_of_fixed_datum_records,
94                number_of_variable_datum_records,
95                fixed_datum_records,
96                variable_datum_records,
97            })
98        } else {
99            Err(DISError::invalid_header(
100                format!(
101                    "Expected PDU type ActionResponseReliable, got {:?}",
102                    pdu_header.pdu_type
103                ),
104                None,
105            ))
106        }
107    }
108
109    fn as_any(&self) -> &dyn Any {
110        self
111    }
112
113    fn deserialize_without_header(
114        mut buffer: BytesMut,
115        pdu_header: PduHeader,
116    ) -> Result<Self, DISError>
117    where
118        Self: Sized,
119    {
120        let originating_entity_id = EntityId::deserialize(&mut buffer);
121        let receiving_entity_id = EntityId::deserialize(&mut buffer);
122        let request_id = buffer.get_u32();
123        let request_status = ActionResponseRequestStatus::deserialize(&mut buffer);
124        let number_of_fixed_datum_records = buffer.get_u32();
125        let number_of_variable_datum_records = buffer.get_u32();
126        let mut fixed_datum_records: u64 = 0;
127        for _record in 0..number_of_fixed_datum_records as usize {
128            fixed_datum_records += buffer.get_u64();
129        }
130        let mut variable_datum_records: u64 = 0;
131        for _record in 0..number_of_variable_datum_records as usize {
132            variable_datum_records += buffer.get_u64();
133        }
134
135        Ok(ActionResponseReliablePdu {
136            pdu_header,
137            originating_entity_id,
138            receiving_entity_id,
139            request_id,
140            request_status,
141            number_of_fixed_datum_records,
142            number_of_variable_datum_records,
143            fixed_datum_records,
144            variable_datum_records,
145        })
146    }
147}
148
149#[cfg(test)]
150mod tests {
151    use super::ActionResponseReliablePdu;
152    use crate::common::pdu_header::{PduHeader, PduType, ProtocolFamily};
153
154    #[test]
155    fn create_header() {
156        let action_response_reliable_pdu = ActionResponseReliablePdu::default();
157        let pdu_header = PduHeader::default(
158            PduType::ActionResponseReliable,
159            ProtocolFamily::SimulationManagementWithReliability,
160            448 / 8,
161        );
162
163        assert_eq!(
164            pdu_header.protocol_version,
165            action_response_reliable_pdu.pdu_header.protocol_version
166        );
167        assert_eq!(
168            pdu_header.exercise_id,
169            action_response_reliable_pdu.pdu_header.exercise_id
170        );
171        assert_eq!(
172            pdu_header.pdu_type,
173            action_response_reliable_pdu.pdu_header.pdu_type
174        );
175        assert_eq!(
176            pdu_header.protocol_family,
177            action_response_reliable_pdu.pdu_header.protocol_family
178        );
179        assert_eq!(
180            pdu_header.length,
181            action_response_reliable_pdu.pdu_header.length
182        );
183        assert_eq!(
184            pdu_header.status_record,
185            action_response_reliable_pdu.pdu_header.status_record
186        );
187    }
188}
open_dis_rust/simulation_management_with_reliability/action_response_reliable_pdu.rs

open_dis_rust/simulation_management_with_reliability/
action_response_reliable_pdu.rs
