langfuse-client-base 0.15.0

Auto-generated Langfuse API client from OpenAPI specification
Documentation 
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/*
 * server
 *
 * ## Real-time data  The only real-time path to get tracing data is to ingest via OpenTelemetry (`POST /api/public/otel/v1/traces`) and retrieve via Observations API v2 (`GET /api/public/v2/observations`) and Metrics API v2 (`GET /api/public/v2/metrics`). Other public API write and read endpoints can delay data by about 10 minutes. Direct OpenTelemetry exporters must send the `x-langfuse-ingestion-version: 4` header; current Python and JS SDKs already do. See the [Public API docs](https://langfuse.com/docs/api-and-data-platform/features/public-api) and [real-time ingestion](https://langfuse.com/integrations/native/opentelemetry.md#real-time-ingestion).  ## Authentication  Authenticate with the API using [Basic Auth](https://en.wikipedia.org/wiki/Basic_access_authentication), get API keys in the project settings:  - username: Langfuse Public Key - password: Langfuse Secret Key  ## Exports  - OpenAPI spec: https://cloud.langfuse.com/generated/api/openapi.yml - Self-hosted deployments: interactive API reference at `/api/docs` and OpenAPI spec at `/api/openapi.yaml`
 *
 * The version of the OpenAPI document:
 *
 * Generated by: https://openapi-generator.tech
 */

use super::{configuration, ContentType, Error};
use crate::{apis::ResponseContent, models};
use reqwest;
use serde::{de::Error as _, Deserialize, Serialize};

/// struct for typed errors of method [`legacy_metrics_v1_metrics`]
#[derive(Debug, Clone, Serialize, Deserialize)]
#[serde(untagged)]
pub enum LegacyMetricsV1MetricsError {
    Status400(serde_json::Value),
    Status401(serde_json::Value),
    Status403(serde_json::Value),
    Status404(serde_json::Value),
    Status405(serde_json::Value),
    UnknownValue(serde_json::Value),
}

/// **Deprecated:** On Langfuse Cloud, Langfuse v3 is deprecated and this endpoint will be removed on November 16, 2026. Use `GET /api/public/v2/metrics?query=<urlencoded json query>` instead. Self-hosted deployments are unaffected by this date; the endpoint becomes unavailable when they upgrade to Langfuse v4. See the [Langfuse v3 to v4 upgrade guide](https://langfuse.com/self-hosting/upgrade/upgrade-guides/upgrade-v3-to-v4).  Get metrics from the Langfuse project using a query object.  Consider using the [v2 metrics endpoint](/api-reference#tag/metricsv2/GET/api/public/v2/metrics) for better performance.  For more details, see the [Metrics API documentation](https://langfuse.com/docs/metrics/features/metrics-api).
#[deprecated]
#[bon::builder]
pub async fn legacy_metrics_v1_metrics(
    configuration: &configuration::Configuration,
    query: &str,
) -> Result<models::LegacyMetricsResponse, Error<LegacyMetricsV1MetricsError>> {
    // add a prefix to parameters to efficiently prevent name collisions
    let p_query_query = query;

    let uri_str = format!("{}/api/public/metrics", configuration.base_path);
    let mut req_builder = configuration.client.request(reqwest::Method::GET, &uri_str);

    req_builder = req_builder.query(&[("query", &p_query_query.to_string())]);
    if let Some(ref user_agent) = configuration.user_agent {
        req_builder = req_builder.header(reqwest::header::USER_AGENT, user_agent.clone());
    }
    if let Some(ref auth_conf) = configuration.basic_auth {
        req_builder = req_builder.basic_auth(auth_conf.0.to_owned(), auth_conf.1.to_owned());
    };

    let req = req_builder.build()?;
    let resp = configuration.client.execute(req).await?;

    let status = resp.status();
    let content_type = resp
        .headers()
        .get("content-type")
        .and_then(|v| v.to_str().ok())
        .unwrap_or("application/octet-stream");
    let content_type = super::ContentType::from(content_type);

    if !status.is_client_error() && !status.is_server_error() {
        let content = resp.text().await?;
        match content_type {
            ContentType::Json => serde_json::from_str(&content).map_err(Error::from),
            ContentType::Text => return Err(Error::from(serde_json::Error::custom("Received `text/plain` content type response that cannot be converted to `models::LegacyMetricsResponse`"))),
            ContentType::Unsupported(unknown_type) => return Err(Error::from(serde_json::Error::custom(format!("Received `{unknown_type}` content type response that cannot be converted to `models::LegacyMetricsResponse`")))),
        }
    } else {
        let content = resp.text().await?;
        let entity: Option<LegacyMetricsV1MetricsError> = serde_json::from_str(&content).ok();
        Err(Error::ResponseError(ResponseContent {
            status,
            content,
            entity,
        }))
    }
}