295 lines
10 KiB
Rust
295 lines
10 KiB
Rust
// module to handle unix-socket connection + pulling info from api
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use anyhow::Result;
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// use integr_structs::api::{ApiConfigV2, ProcessedEndpoint};
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use log::{error, info};
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use rand::random;
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use tokio::sync::mpsc::Receiver;
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use tokio::time::{sleep, Duration};
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use reqwest::{Client, Method};
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use std::hash::{Hash, Hasher};
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use std::sync::Arc;
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use tokio::task::JoinHandle;
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// use tokio::sync::Mutex;
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use dotenv::dotenv;
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use crate::json::JsonParser;
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use crate::export::Exporter;
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use integr_structs::api::v3::{Config, ConfigEndpoint, Credentials, Metrics, PrometheusMetrics};
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// use md5::compute;
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// type BufferType = Arc<Mutex<Vec<String>>>;
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// for api info pulling
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pub async fn init_api_grub_mechanism(config: Config, rx: &mut Receiver<Config>) -> Result<()> {
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info!("Initializing API-info grubbing mechanism :");
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info!("1) Loading vars from .env file if exists...");
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let _ = dotenv().ok();
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let mut config = config;
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let mut poller = ApiPoll::new(&mut config).await;
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info!("2) Api-Poller has initialized");
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let client = Exporter::init();
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info!("3) Exporter has initialized");
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let shared_pool = Arc::new(client);
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loop {
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if poller.is_default().await {
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sleep(Duration::from_secs(5)).await;
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} else {
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if rx.len() > 0 {
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if let Some(conf) = rx.recv().await {
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poller.change_config(conf).await;
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info!("Config changed");
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}
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}
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let shared_pool = shared_pool.clone();
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info!("Data from API: {:?}", poller.process_polling(shared_pool).await);
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// sleep(Duration::from_secs(poller.get_delay().await as u64)).await;
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}
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}
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// Ok(())
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}
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struct RestMethod;
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impl RestMethod {
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pub async fn from_str(method: &str) -> Method {
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return match method.trim().to_lowercase().as_str() {
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"post" => Method::POST,
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"patch" => Method::PATCH,
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"put" => Method::PUT,
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"delete" => Method::DELETE,
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"head" => Method::HEAD,
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"trace" => Method::TRACE,
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"options" => Method::OPTIONS,
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"connect" => Method::CONNECT,
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"get" | _ => Method::GET
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}
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}
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}
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struct ApiPoll<'a> {
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config : &'a mut Config,
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client : Client,
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}
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impl<'a> ApiPoll<'a> {
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pub async fn new(poll_cfg : &'a mut Config) -> Self {
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Self {
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config : poll_cfg,
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client : Client::new(),
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}
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}
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// can be weak and with bug test needed
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pub async fn change_config(&mut self, conf: Config) {
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*self.config = conf;
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}
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pub async fn is_default(&self) -> bool {
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self.config.is_default().await
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}
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// pub async fn get_delay(&self) -> u32 {
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// self.config.timeout
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// }
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pub async fn process_metrics(
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service_id: Arc<String>,
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metrics: Arc<Metrics>,
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creds: Credentials,
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// exporter: Arc<Exporter>
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) -> Result<()> {
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// processing metrics
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// let mut req = Client::new()
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// // .user_agent("api_grub/integration_module")
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// .get(&metrics.url);
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use std::hash::DefaultHasher;
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let rand = random::<char>();
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let mut hash = DefaultHasher::new();
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rand.hash(&mut hash);
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let client = Client::builder()
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.user_agent(format!("api-grabber-{}", hash.finish()));
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let mut req = client.build().unwrap().get(&metrics.url);
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let login = &creds.endpoint.login;
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let password = &creds.endpoint.password;
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let api_key = &creds.endpoint.api_key;
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if !login.is_empty() && !password.is_empty() {
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// dbg!("kjgbkasgksjd");
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req = req.basic_auth(login, Some(password));
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}
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if !api_key.is_empty() {
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// req = req.bearer_auth(&api_key);
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// req = req.header("authorization", "bearer ");
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req = req.header("accept", "application/json");
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req = req.header("x-api-key", api_key);
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// req = req.query(&["Bearer", "6fe8b0db-62b4-4065-9c1e-441ec4228341.9acec20bd17d7178f332896f8c006452877a22b8627d089105ed39c5baef9711"])
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}
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// dbg!(&req);
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// let (client, res) = req.build_split();
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// let res = res.unwrap();
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// res.url_mut().is_special()
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// dbg!(client);
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// dbg!(res);
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// todo!();
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match req.send().await {
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Ok(resp) => {
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// dbg!(&resp.text().await);
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if let Ok(response) = resp.text().await {
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match serde_json::to_value(&response) {
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Err(er) => {
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error!("Bad JSON in response. Error: {}", er);
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},
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Ok(_) => {
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let endpoint_name = &metrics.name;
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let preproc = JsonParser::parse(&metrics.measure, &response);
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// dbg!(serde_json::to_string_pretty(&preproc));
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let preproc = PrometheusMetrics::new(&service_id, endpoint_name, preproc);
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match Exporter::export_metrics(preproc).await {
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Ok(bytes) => {
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info!("Successfully exported {} bytes of metrics data to Prometheus", bytes);
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},
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Err(er) => {
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error!("Failed to export data to Prometheus due to {}", er);
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},
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}
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},
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}
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} else {
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error!("Bad response from {}. No data", &metrics.url);
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}
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},
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Err(er) => {
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error!("Cannot API data from {} due to : {}", &metrics.url, er);
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},
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}
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Ok(())
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}
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pub async fn process_endpoint(
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// client : Arc<Client>,
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config : Arc<ConfigEndpoint>,
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creds : Credentials,
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// exporter : Arc<Exporter>
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) -> Result<()> {
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//
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let period = config.get_period().unwrap_or(0);
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let timeout = config.get_timeout().unwrap_or(5);
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let metrics = Arc::new(config.metrics.clone());
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let service_id = Arc::new(config.id.clone());
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loop {
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// let exporter = exporter.clone();
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let creds = creds.clone();
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let metrics = metrics.clone();
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let service_id = service_id.clone();
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let mut jh = Vec::<JoinHandle::<Result<()>>>::new();
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for idx in 0..metrics.len() {
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let creds = creds.clone();
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let metrics = metrics.clone();
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let service_id = service_id.clone();
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let event = tokio::spawn(async move {
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Self::process_metrics(
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service_id.clone(),
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metrics[idx].clone().into(),
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creds.clone(),
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).await
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});
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jh.push(event);
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}
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info!("Initializing another {} subjob(s) for `{}` service",
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jh.len(),
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&service_id
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);
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for i in jh {
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let _ = i.await;
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}
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// processing
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sleep(Duration::from_secs(timeout)).await
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}
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Ok(())
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}
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pub async fn process_polling(&self, exporter: Arc<Exporter>) -> Result<()> {
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// let buffer: BufferType = Arc::new(Mutex::new(vec![]));
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// let mut join_handles: Vec<JoinHandle<Result<()>>> = vec![];
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// let client = Arc::new(self.client.clone());
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let config = Arc::new(self.config.clone());
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let endpoints: Vec<Arc<ConfigEndpoint>> = ConfigEndpoint::from_config(config.clone());
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let mut join_handles: Vec<JoinHandle<Result<()>>> = vec![];
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for (idx, _) in config.config.iter().enumerate() {
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// let for_creds = endpoints[idx].clone();
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let creds = Credentials::from_config_endpoint(endpoints[idx].clone());
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let endpoint = endpoints[idx].clone();
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// let client = client.clone();
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let exporter = exporter.clone();
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let join_handler = tokio::spawn(async move {
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Self::process_endpoint(
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// client,
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endpoint,
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creds,
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// exporter.clone()
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).await
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});
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join_handles.push(join_handler);
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}
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info!("Initializing {} task(s) for current config", join_handles.len());
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for i in join_handles {
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let _ = i.await;
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}
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Ok(())
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}
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}
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// #[cfg(test)]
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// mod net_unittests {
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// use super::*;
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// use tokio::test;
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// #[test]
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// async fn check_str_to_rest_method() {
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// assert_eq!(RestMethod::from_str("get").await, Method::GET);
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// assert_eq!(RestMethod::from_str("post").await, Method::POST);
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// assert_eq!(RestMethod::from_str("patch").await, Method::PATCH);
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// assert_eq!(RestMethod::from_str("put").await, Method::PUT);
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// assert_eq!(RestMethod::from_str("delete").await, Method::DELETE);
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// assert_eq!(RestMethod::from_str("invalid_method").await, Method::GET);
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// }
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// #[test]
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// async fn check_api_poll_change_config() {
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// let mut conf1 = ApiConfigV2::default();
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// let conf2 = ApiConfigV2::pattern();
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// let mut poll = ApiPoll::new(&mut conf1).await;
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// poll.change_config(conf2).await;
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// assert_eq!(poll.config.timeout, 1)
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// }
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// #[test]
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// async fn check_api_poll_is_default() {
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// let mut conf1 = ApiConfigV2::default();
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// let poll = ApiPoll::new(&mut conf1).await;
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// assert!(poll.is_default().await)
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// }
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// #[test]
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// async fn check_api_grubbing_mechanism_on_public_one() {
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// use log::{set_max_level, LevelFilter};
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// set_max_level(LevelFilter::Off);
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// let mut conf1 = ApiConfigV2::pattern();
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// let conf2 = ApiConfigV2::default();
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// let exporter = Arc::new(Exporter::init());
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// let mut poll = ApiPoll::new(&mut conf1).await;
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// assert!(poll.process_polling(exporter.clone()).await.is_ok());
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// dbg!(&poll.config);
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// poll.change_config(conf2).await;
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// dbg!(&poll.config);
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// assert!(poll.process_polling(exporter.clone()).await.is_err());
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// }
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// }
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