82 lines
2.5 KiB
Rust
82 lines
2.5 KiB
Rust
use heapless::Vec;
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use crate::encoding::variable_byte_integer::VariableByteIntegerEncoder;
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use crate::packet::mqtt_packet::Packet;
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use crate::utils::buffer_reader::BuffReader;
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use crate::utils::buffer_reader::TopicFilter;
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use crate::utils::buffer_writer::BuffWriter;
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use super::packet_type::PacketType;
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use super::property::Property;
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pub const MAX_PROPERTIES: usize = 20;
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pub struct UnsubscriptionPacket<'a, const MAX_FILTERS: usize> {
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// 7 - 4 mqtt control packet type, 3-0 flagy
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pub fixed_header: u8,
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// 1 - 4 B lenght of variable header + len of payload
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pub remain_len: u32,
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pub packet_identifier: u16,
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pub property_len: u32,
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// properties
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pub properties: Vec<Property<'a>, MAX_PROPERTIES>,
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// topic filter len
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pub topic_filter_len: u16,
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// payload
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pub topic_filters: Vec<TopicFilter<'a>, MAX_FILTERS>,
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}
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impl<'a, const MAX_FILTERS: usize> UnsubscriptionPacket<'a, MAX_FILTERS> {
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/*pub fn new() -> Self {
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}*/
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}
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impl<'a, const MAX_FILTERS: usize> Packet<'a> for UnsubscriptionPacket<'a, MAX_FILTERS> {
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fn encode(&mut self, buffer: &mut [u8]) {
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let mut buff_writer = BuffWriter::new(buffer);
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let mut rm_ln = self.property_len;
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let property_len_enc: [u8; 4] = VariableByteIntegerEncoder::encode(self.property_len).unwrap();
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let property_len_len = VariableByteIntegerEncoder::len(property_len_enc);
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rm_ln = rm_ln + property_len_len as u32 + 4 + self.topic_filter_len as u32;
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buff_writer.write_u8(self.fixed_header);
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buff_writer.write_variable_byte_int(rm_ln);
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buff_writer.write_u16(self.packet_identifier);
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buff_writer.write_variable_byte_int(self.property_len);
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buff_writer.encode_properties::<MAX_PROPERTIES>(&self.properties);
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buff_writer.write_u16(self.topic_filter_len);
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buff_writer.encode_topic_filters_ref(false, self.topic_filter_len as usize, & self.topic_filters);
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}
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fn decode(&mut self, buff_reader: &mut BuffReader<'a>) {
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log::error!("Unsubscribe packet does not support decode funtion on client!");
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}
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fn set_property_len(&mut self, value: u32) {
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self.property_len = value;
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}
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fn get_property_len(&mut self) -> u32 {
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return self.property_len;
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}
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fn push_to_properties(&mut self, property: Property<'a>) {
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self.properties.push(property);
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}
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fn set_fixed_header(& mut self, header: u8) {
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self.fixed_header = header;
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}
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fn set_remaining_len(& mut self, remaining_len: u32) {
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self.remain_len = remaining_len;
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}
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}
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