cuenv_events/renderers/
json.rs

1//! JSON renderer for cuenv events.
2//!
3//! Renders events as JSON lines for machine consumption.
4//! This module is allowed to use println! as it's the output layer.
5
6#![allow(clippy::print_stdout)]
7
8use crate::bus::EventReceiver;
9use crate::event::CuenvEvent;
10
11/// JSON renderer that outputs events as JSON lines.
12#[derive(Debug, Default)]
13pub struct JsonRenderer {
14    /// Whether to pretty-print JSON.
15    pretty: bool,
16}
17
18impl JsonRenderer {
19    /// Create a new JSON renderer with compact output.
20    #[must_use]
21    pub fn new() -> Self {
22        Self { pretty: false }
23    }
24
25    /// Create a new JSON renderer with pretty-printed output.
26    #[must_use]
27    pub fn pretty() -> Self {
28        Self { pretty: true }
29    }
30
31    /// Run the renderer, consuming events from the receiver.
32    pub async fn run(self, mut receiver: EventReceiver) {
33        while let Some(event) = receiver.recv().await {
34            self.render(&event);
35        }
36    }
37
38    /// Render a single event as JSON.
39    pub fn render(&self, event: &CuenvEvent) {
40        let json = if self.pretty {
41            serde_json::to_string_pretty(event)
42        } else {
43            serde_json::to_string(event)
44        };
45
46        if let Ok(json) = json {
47            println!("{json}");
48        }
49    }
50}
cuenv_events/renderers/json.rs

cuenv_events/renderers/
json.rs
