Struct RepeatedBwPattern 

pub struct RepeatedBwPattern {
    pub pattern: Vec<Box<dyn BwTraceConfig>>,
    pub count: usize,
    /* private fields */
}

The model contains an array of bandwidth trace models.

Combine multiple bandwidth trace models into one bandwidth pattern, and repeat the pattern for count times.

If count is 0, the pattern will be repeated forever.

Examples

The most common use case is to read from a configuration file and deserialize it into a RepeatedBwPatternConfig:

// The content would be "{\"RepeatedBwPatternConfig\":{\"pattern\":[{\"StaticBwConfig\":{\"bw\":{\"gbps\":0,\"bps\":12000000},\"duration\":{\"secs\":1,\"nanos\":0}}},{\"StaticBwConfig\":{\"bw\":{\"gbps\":0,\"bps\":24000000},\"duration\":{\"secs\":1,\"nanos\":0}}}],\"count\":2}}"
// if the `human` feature is not enabled.
let config_file_content = "{\"RepeatedBwPatternConfig\":{\"pattern\":[{\"StaticBwConfig\":{\"bw\":{\"gbps\":0,\"bps\":12000000},\"duration\":{\"secs\":1,\"nanos\":0}}},{\"StaticBwConfig\":{\"bw\":{\"gbps\":0,\"bps\":24000000},\"duration\":{\"secs\":1,\"nanos\":0}}}],\"count\":2}}";
let des: Box<dyn BwTraceConfig> = serde_json::from_str(config_file_content).unwrap();
let mut model = des.into_model();
assert_eq!(
    model.next_bw(),
    Some((Bandwidth::from_mbps(12), Duration::from_secs(1)))
);
assert_eq!(
    model.next_bw(),
    Some((Bandwidth::from_mbps(24), Duration::from_secs(1)))
);
assert_eq!(
    model.next_bw(),
    Some((Bandwidth::from_mbps(12), Duration::from_secs(1)))
);
assert_eq!(
    model.next_bw(),
    Some((Bandwidth::from_mbps(24), Duration::from_secs(1)))
);
assert_eq!(model.next_bw(), None);

You can also build manually:

let pat = vec![
    Box::new(
        StaticBwConfig::new()
            .bw(Bandwidth::from_mbps(12))
            .duration(Duration::from_secs(1)),
    ) as Box<dyn BwTraceConfig>,
    Box::new(
        StaticBwConfig::new()
            .bw(Bandwidth::from_mbps(24))
            .duration(Duration::from_secs(1)),
    ) as Box<dyn BwTraceConfig>,
];
let ser = Box::new(RepeatedBwPatternConfig::new().pattern(pat).count(2)) as Box<dyn BwTraceConfig>;
let ser_str = serde_json::to_string(&ser).unwrap();
// The json string would be "{\"RepeatedBwPatternConfig\":{\"pattern\":[{\"StaticBwConfig\":{\"bw\":{\"gbps\":0,\"bps\":12000000},\"duration\":{\"secs\":1,\"nanos\":0}}},{\"StaticBwConfig\":{\"bw\":{\"gbps\":0,\"bps\":24000000},\"duration\":{\"secs\":1,\"nanos\":0}}}],\"count\":2}}"
// if the `human` feature is not enabled.
let json_str = "{\"RepeatedBwPatternConfig\":{\"pattern\":[{\"StaticBwConfig\":{\"bw\":{\"gbps\":0,\"bps\":12000000},\"duration\":{\"secs\":1,\"nanos\":0}}},{\"StaticBwConfig\":{\"bw\":{\"gbps\":0,\"bps\":24000000},\"duration\":{\"secs\":1,\"nanos\":0}}}],\"count\":2}}";
assert_eq!(ser_str, json_str);

Fields

pattern: Vec<Box<dyn BwTraceConfig>>

count: usize

Trait Implementations

impl BwTrace for RepeatedBwPattern

fn next_bw(&mut self) -> Option<(Bandwidth, Duration)>