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#[cfg(feature = "error-handling-messages")]
use mqtt::packet::VariablePacketError;
use std::collections::HashMap;
#[cfg(any(
feature = "direct-methods",
feature = "c2d-messages",
feature = "twin-properties",
feature = "error-handling-messages",
))]
#[derive(Debug)]
pub enum MessageType {
#[cfg(feature = "c2d-messages")]
C2DMessage(Message),
#[cfg(feature = "twin-properties")]
DesiredPropertyUpdate(Message),
#[cfg(feature = "direct-methods")]
DirectMethod(DirectMethodInvocation),
#[cfg(feature = "error-handling-messages")]
ErrorReceive(VariablePacketError),
}
#[cfg(feature = "direct-methods")]
#[derive(Debug)]
pub struct DirectMethodResponse {
pub(crate) status: i32,
pub(crate) request_id: String,
pub(crate) body: String,
}
#[cfg(feature = "direct-methods")]
impl DirectMethodResponse {
pub fn new(request_id: String, status: i32, body: Option<String>) -> Self {
Self {
status,
request_id,
body: body.unwrap_or_default(),
}
}
}
#[derive(Default, Debug)]
pub struct Message {
pub body: Vec<u8>,
pub(crate) properties: HashMap<String, String>,
pub(crate) system_properties: HashMap<String, String>,
}
impl Message {
pub fn new(body: Vec<u8>) -> Self {
Self {
body,
..Default::default()
}
}
pub fn builder() -> MessageBuilder {
MessageBuilder::default()
}
}
#[derive(Debug, Default)]
pub struct MessageBuilder {
message: Option<Vec<u8>>,
properties: HashMap<String, String>,
system_properties: HashMap<String, String>,
}
impl MessageBuilder {
pub fn set_body(mut self, body: Vec<u8>) -> Self {
self.message = Some(body);
self
}
pub fn set_message_id(self, message_id: String) -> Self {
self.set_system_property("$.mid", message_id)
}
pub fn set_content_type(self, content_type: String) -> Self {
self.set_system_property("$.ct", content_type)
}
pub fn set_content_encoding(self, content_encoding: String) -> Self {
self.set_system_property("$.ce", content_encoding)
}
fn set_system_property(mut self, property_name: &str, value: String) -> Self {
self.system_properties
.insert(property_name.to_owned(), value);
self
}
pub fn add_message_property(mut self, key: String, value: String) -> Self {
self.properties.insert(key, value);
self
}
pub fn build(self) -> Message {
Message {
body: self.message.unwrap(),
properties: self.properties,
system_properties: self.system_properties,
}
}
}
#[cfg(feature = "direct-methods")]
#[derive(Debug)]
pub struct DirectMethodInvocation {
pub method_name: String,
pub message: Message,
pub request_id: String,
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_setting_content_type() {
let builder = Message::builder();
let msg = builder
.set_content_type("application/json".to_owned())
.set_body(vec![])
.build();
assert_eq!(msg.system_properties["$.ct"], "application/json");
}
#[test]
fn test_setting_content_encoding() {
let builder = Message::builder();
let msg = builder
.set_content_type("application/json".to_owned())
.set_content_encoding("UTF-8".to_owned())
.set_body(vec![])
.build();
assert_eq!(msg.system_properties["$.ce"], "UTF-8");
}
}