opentelemetry_otlp/exporter/http/
metrics.rs

1use std::sync::Arc;
2
3use crate::metric::MetricsClient;
4use http::{header::CONTENT_TYPE, Method};
5use opentelemetry::otel_debug;
6use opentelemetry_sdk::error::{OTelSdkError, OTelSdkResult};
7use opentelemetry_sdk::metrics::data::ResourceMetrics;
8
9use super::OtlpHttpClient;
10
11impl MetricsClient for OtlpHttpClient {
12    async fn export(&self, metrics: &ResourceMetrics) -> OTelSdkResult {
13        let client = self
14            .client
15            .lock()
16            .map_err(|e| OTelSdkError::InternalFailure(format!("Failed to acquire lock: {e:?}")))
17            .and_then(|g| match &*g {
18                Some(client) => Ok(Arc::clone(client)),
19                _ => Err(OTelSdkError::AlreadyShutdown),
20            })?;
21
22        let (body, content_type, content_encoding) =
23            self.build_metrics_export_body(metrics).ok_or_else(|| {
24                OTelSdkError::InternalFailure("Failed to serialize metrics".to_string())
25            })?;
26
27        let mut request_builder = http::Request::builder()
28            .method(Method::POST)
29            .uri(&self.collector_endpoint)
30            .header(CONTENT_TYPE, content_type);
31
32        if let Some(encoding) = content_encoding {
33            request_builder = request_builder.header("Content-Encoding", encoding);
34        }
35
36        let mut request = request_builder
37            .body(body.into())
38            .map_err(|e| OTelSdkError::InternalFailure(format!("{e:?}")))?;
39
40        for (k, v) in &self.headers {
41            request.headers_mut().insert(k.clone(), v.clone());
42        }
43
44        otel_debug!(name: "HttpMetricsClient.ExportStarted");
45        let result = client.send_bytes(request).await;
46
47        match result {
48            Ok(response) => {
49                if response.status().is_success() {
50                    otel_debug!(name: "HttpMetricsClient.ExportSucceeded");
51                    Ok(())
52                } else {
53                    let error = format!(
54                        "OpenTelemetry metrics export failed. Status Code: {}, Response: {:?}",
55                        response.status().as_u16(),
56                        response.body()
57                    );
58                    otel_debug!(name: "HttpMetricsClient.ExportFailed", error = &error);
59                    Err(OTelSdkError::InternalFailure(error))
60                }
61            }
62            Err(e) => {
63                let error = format!("{e:?}");
64                otel_debug!(name: "HttpMetricsClient.ExportFailed", error = &error);
65                Err(OTelSdkError::InternalFailure(error))
66            }
67        }
68    }
69
70    fn shutdown(&self) -> OTelSdkResult {
71        self.client
72            .lock()
73            .map_err(|e| OTelSdkError::InternalFailure(format!("Failed to acquire lock: {e}")))?
74            .take();
75
76        Ok(())
77    }
78}
opentelemetry_otlp/exporter/http/metrics.rs

opentelemetry_otlp/exporter/http/
metrics.rs
