Enum opentracingrust::ExtractFormat [−] [src]

pub enum ExtractFormat<'a> {
    Binary(Box<&'a mut Read>),
    HttpHeaders(Box<&'a MapCarrier>),
    TextMap(Box<&'a MapCarrier>),
}

SpanContext extraction format and source.

Each supported extraction format also carries an object trait to the data carrier the SpanContext should be extracted from.

Examples

extern crate opentracingrust;

use std::collections::HashMap;
use opentracingrust::ExtractFormat;


fn main() {
    let mut headers: HashMap<String, String> = HashMap::new();
    headers.insert(String::from("TraceId"), String::from("123"));
    headers.insert(String::from("SpanId"), String::from("456"));

    let format = ExtractFormat::HttpHeaders(Box::new(&headers)); 
    // ... snip ...
}

Variants