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use crate::types;
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use hyper::{Body, Client, Method, Request, StatusCode};
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use serde_json::json;
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use tokio::io::{stdout, AsyncWriteExt as _};
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use bytes::Buf as _;
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pub struct GrafanaService {
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url: String,
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api_key: String,
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}
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impl GrafanaService {
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pub fn new(url: String, api_key: String) -> GrafanaService {
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GrafanaService { api_key, url }
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}
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pub async fn test_connection(&self) -> types::Result<()> {
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println!("Test connection response");
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let (s, p) = self.get("/api").await?;
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println!("{}", p.to_string());
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Ok(())
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}
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pub async fn get_datasources(&self) -> types::Result<()> {
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let (s, p) = self.get("/api/datasources").await?;
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println!("{}", p);
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Ok(())
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}
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pub async fn extract_metrics(&self) -> types::Result<()> {
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let (s, p) = self
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.post(
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"/api/datasources/proxy/1/api/v1/query_range",
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// serde_json::json!({
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// "from": "1634237655",
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// "to": "1634238555",
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// "queries": [
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// {
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// "datasourceId": 1,
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// "refId": "A",
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// "expr": "rate(go_memstats_alloc_bytes_total[5m])",
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// "format": "time_series",
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// "step": "15",
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// "start": "1634329050",
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// "end": "1634329950"
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// }
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// ]
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// "query": "rate(go_memstats_alloc_bytes_total[5m])",
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// "start": 1634672070,
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// "end": 1634672970,
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// "step": "15"
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// }),
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serde_json::json!({})
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)
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.await?;
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println!("{}", p.to_string());
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Ok(())
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}
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async fn get(&self, suburl: &str) -> types::Result<(StatusCode, serde_json::Value)> {
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let req = Request::builder()
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.method(Method::GET)
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.uri(self.url.to_owned() + suburl)
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.header("Accept", "application/json")
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.header("Authorization", format!("Bearer {}", self.api_key))
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.body(Body::empty())
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.unwrap();
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let client = Client::new();
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let res = client.request(req).await?;
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let status = res.status();
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let body = hyper::body::aggregate(res).await?;
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let reader = body.reader();
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let result: serde_json::Value = serde_json::from_reader(reader)?;
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Ok((status, result))
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}
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async fn post(
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&self,
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suburl: &str,
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value: serde_json::Value,
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) -> types::Result<(StatusCode, serde_json::Value)> {
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let req = Request::builder()
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.method(Method::POST)
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.uri(self.url.to_owned() + suburl)
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.header("Accept", "application/json")
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// .header("Content-Type", "application/json")
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.header("Content-Type", "application/x-www-form-urlencoded")
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.header("Authorization", format!("Bearer {}", self.api_key))
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// .body(Body::from(value.to_string()))
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.body(Body::from("query=rate%28go_memstats_alloc_bytes_total%5B5m%5D%29&start=1634672070&end=1634672970&step=15"))
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.unwrap();
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let client = Client::new();
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let res = client.request(req).await?;
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let status = res.status();
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let body = hyper::body::aggregate(res).await?;
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let reader = body.reader();
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let result: serde_json::Value = serde_json::from_reader(reader)?;
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Ok((status, result))
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}
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}
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