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refactor + proxies

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Cat /dev/Nulo 2024-06-22 21:28:18 -03:00
parent 8e04089843
commit 78ac22bd68
8 changed files with 1660 additions and 562 deletions
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1459
scraper-rs/Cargo.lock generated
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7
scraper-rs/Cargo.toml
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@ -18,12 +18,13 @@ html-escape = "0.2.13"
itertools = "0.12.0"
nanoid = "0.4.0"
quick-xml = "0.31.0"
rand = "0.8.5"
reqwest = { version = "0.11.23", default-features = false, features = [
rand = "0.8"
reqwest = { version = "0.12", default-features = false, features = [
"rustls-tls",
"gzip",
"brotli",
"socks",
"json",
] }
rusqlite = "0.30.0"
serde = { version = "1.0.193", features = ["derive"] }
@ -34,3 +35,5 @@ tl = { git = "https://github.com/evertedsphere/tl", branch = "patch-1" }
tokio = { version = "1.35.1", features = ["full"] }
tracing = "0.1"
tracing-subscriber = "0.3"
proxy-scraper-checker = { git = "https://github.com/catdevnull/Proxy-Scraper-Checker", rev = "429ca83d137abdf5377a1d22ee85d62bfb00437c" }
indicatif = "0.17.8"

102
scraper-rs/src/auto.rs Normal file
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@ -0,0 +1,102 @@
use super::fetch_list;
use super::now_sec;
use super::supermercado::Supermercado;
use super::AutoArgs;
use super::AutoTelegram;
use crate::db::Db;
use crate::scraper::Scraper;
use futures::Future;
use reqwest::Url;
#[derive(Clone)]
pub struct Auto {
pub db: Db,
pub telegram: Option<AutoTelegram>,
pub args: AutoArgs,
pub scraper: Scraper,
}
impl Auto {
pub async fn download_supermercado(self, supermercado: Supermercado) -> anyhow::Result<()> {
{
let t0 = now_sec();
match self.get_and_save_urls(&supermercado).await {
Ok(_) => {
self.inform(&format!(
"Downloaded url list {:?} (took {})",
&supermercado,
now_sec() - t0
))
.await
}
Err(err) => {
self.inform(&format!(
"[{:?}] FAILED url list: {:?} (took {})",
&supermercado,
err,
now_sec() - t0
))
.await
}
}
}
let links: Vec<String> = {
let mut links = self.db.get_urls_by_domain(supermercado.host()).await?;
if let Some(n) = self.args.n_products {
links.truncate(n);
}
links
};
// {
// let debug_path = PathBuf::from("debug/");
// tokio::fs::create_dir_all(&debug_path).await.unwrap();
// let file_path = debug_path.join(format!("{}.txt", nanoid!()));
// tokio::fs::write(&file_path, &links.join("\n"))
// .await
// .unwrap();
// tracing::info!("Lista de {:?}: {:?}", &supermercado, file_path.display());
// }
{
let t0 = now_sec();
let counters = fetch_list(&self.db, links).await;
self.inform(&format!(
"Downloaded {:?}: {:?} (took {})",
&supermercado,
counters,
now_sec() - t0
))
.await;
}
Ok(())
}
pub async fn inform_time<T: Future<Output = R>, R>(&self, msg: &str, action: T) -> R {
let t0 = now_sec();
let res = action.await;
self.inform(&format!("{} (took {})", msg, now_sec() - t0))
.await;
res
}
pub async fn get_and_save_urls(&self, supermercado: &Supermercado) -> anyhow::Result<()> {
let urls = self.scraper.get_urls_for_supermercado(supermercado).await?;
self.db.save_producto_urls(urls).await?;
Ok(())
}
pub async fn inform(&self, msg: &str) {
tracing::info!("{}", msg);
if let Some(telegram) = &self.telegram {
let u = Url::parse_with_params(
&format!("https://api.telegram.org/bot{}/sendMessage", telegram.token),
&[
("chat_id", telegram.chat_id.clone()),
("text", msg.to_string()),
],
)
.unwrap();
reqwest::get(u).await.unwrap();
}
}
}

229
scraper-rs/src/main.rs
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@ -1,12 +1,12 @@
use again::RetryPolicy;
use chrono::{DateTime, Utc};
use clap::{Parser, ValueEnum};
use cron::Schedule;
use db::Db;
use futures::{future, stream, Future, StreamExt, TryFutureExt};
use futures::{future, stream, StreamExt, TryFutureExt};
use reqwest::{header::HeaderMap, StatusCode, Url};
use simple_error::{bail, SimpleError};
use reqwest::{header::HeaderMap, IntoUrl, StatusCode};
use scraper::Scraper;
use simple_error::SimpleError;
use std::{
env::{self},
fs,
@ -17,6 +17,10 @@ use thiserror::Error;
mod supermercado;
use supermercado::Supermercado;
mod auto;
use auto::Auto;
mod proxy_client;
mod scraper;
#[derive(Parser)] // requires `derive` feature
enum Args {
@ -69,8 +73,8 @@ async fn main() -> anyhow::Result<()> {
}
async fn scrap_url_cli(url: String) -> anyhow::Result<()> {
let client = build_client();
let res = fetch_and_parse(&client, url.clone()).await;
let scraper = Scraper::new();
let res = scraper.fetch_and_parse(url.clone()).await;
println!("Result: {:#?}", res);
res.map(|_| ())
@ -105,13 +109,13 @@ async fn fetch_list(db: &Db, links: Vec<String>) -> Counters {
.map_or(Ok(24), |s| s.parse::<usize>())
.expect("N_COROUTINES no es un número");
let client = build_client();
let scraper = Scraper::new();
stream::iter(links)
.map(|url| {
let db = db.clone();
let client = client.clone();
tokio::spawn(fetch_and_save(client, url, db))
let scraper = scraper.clone();
tokio::spawn(fetch_and_save(scraper, url, db))
})
.buffer_unordered(n_coroutines)
.fold(Counters::default(), move |x, y| {
@ -134,8 +138,8 @@ struct Counters {
skipped: u64,
}
async fn fetch_and_save(client: reqwest::Client, url: String, db: Db) -> Counters {
let res = fetch_and_parse(&client, url.clone()).await;
async fn fetch_and_save(scraper: Scraper, url: String, db: Db) -> Counters {
let res = scraper.fetch_and_parse(url.clone()).await;
let mut counters = Counters::default();
match res {
Ok(res) => {
@ -182,28 +186,14 @@ fn build_client() -> reqwest::Client {
.build()
.unwrap()
}
fn build_coto_client() -> reqwest::Client {
reqwest::ClientBuilder::default()
.timeout(Duration::from_secs(300))
.connect_timeout(Duration::from_secs(150))
.default_headers(build_header_map())
.build()
.unwrap()
}
pub async fn do_request(client: &reqwest::Client, url: &str) -> reqwest::Result<reqwest::Response> {
pub async fn do_request<U: IntoUrl>(
client: &reqwest::Client,
url: U,
) -> reqwest::Result<reqwest::Response> {
let request = client.get(url).build()?;
let response = client.execute(request).await?.error_for_status()?;
Ok(response)
}
async fn request_and_body(client: &reqwest::Client, url: &str) -> reqwest::Result<String> {
let res = do_request(client, url).await?;
res.text().await
}
pub async fn fetch_body(client: &reqwest::Client, url: &str) -> reqwest::Result<String> {
get_fetch_retry_policy()
.retry_if(|| request_and_body(client, url), retry_if_wasnt_not_found)
.await
}
pub fn get_fetch_retry_policy() -> again::RetryPolicy {
RetryPolicy::exponential(Duration::from_millis(300))
@ -222,51 +212,17 @@ pub fn get_parse_retry_policy() -> again::RetryPolicy {
pub fn retry_if_wasnt_not_found(err: &reqwest::Error) -> bool {
!err.status().is_some_and(|s| s == StatusCode::NOT_FOUND)
}
#[tracing::instrument(skip(client))]
async fn fetch_and_parse(
client: &reqwest::Client,
url: String,
) -> Result<PrecioPoint, anyhow::Error> {
async fn fetch_and_scrap(
client: &reqwest::Client,
url: String,
) -> Result<PrecioPoint, anyhow::Error> {
let body = fetch_body(client, &url).await?;
let maybe_point = { scrap_url(client, url, &body).await };
let point = match maybe_point {
Ok(p) => Ok(p),
Err(err) => {
let now: DateTime<Utc> = Utc::now();
// let debug_path = PathBuf::from(format!("debug-{}/", now.format("%Y-%m-%d")));
// tokio::fs::create_dir_all(&debug_path).await.unwrap();
// let file_path = debug_path.join(format!("{}.html", nanoid!()));
// tokio::fs::write(&file_path, &body).await.unwrap();
// tracing::debug!(error=%err, "Failed to parse, saved body at {}",file_path.display());
tracing::debug!(error=%err, "Failed to parse");
Err(err)
}
}?;
Ok(point)
}
get_parse_retry_policy()
.retry_if(
|| fetch_and_scrap(client, url.clone()),
|err: &anyhow::Error| match err.downcast_ref::<reqwest::Error>() {
Some(e) => !e.status().is_some_and(|s| s == StatusCode::NOT_FOUND),
pub fn anyhow_retry_if_wasnt_not_found(err: &anyhow::Error) -> bool {
match err.downcast_ref::<reqwest::Error>() {
Some(e) => retry_if_wasnt_not_found(e),
None => true,
},
)
.await
}
}
async fn parse_file_cli(file_path: String) -> anyhow::Result<()> {
let file = tokio::fs::read_to_string(file_path).await?;
let client = build_client();
let scraper = Scraper::new();
let url = {
let dom = tl::parse(&file, tl::ParserOptions::default())?;
@ -281,12 +237,13 @@ async fn parse_file_cli(file_path: String) -> anyhow::Result<()> {
};
println!("URL: {}", &url);
println!("{:?}", scrap_url(&client, url, &file).await);
println!("{:?}", scraper.scrap_url(url, &file).await);
Ok(())
}
async fn get_url_list_cli(supermercado: Supermercado) -> anyhow::Result<()> {
let urls = get_urls(&supermercado).await?;
let scraper = Scraper::new();
let urls = scraper.get_urls_for_supermercado(&supermercado).await?;
urls.iter().for_each(|s| {
println!("{}", s);
});
@ -294,137 +251,12 @@ async fn get_url_list_cli(supermercado: Supermercado) -> anyhow::Result<()> {
Ok(())
}
async fn get_urls(supermercado: &Supermercado) -> Result<Vec<String>, anyhow::Error> {
Ok(match supermercado {
Supermercado::Dia => sites::dia::get_urls().await?,
Supermercado::Jumbo => sites::jumbo::get_urls().await?,
Supermercado::Carrefour => sites::carrefour::get_urls().await?,
Supermercado::Coto => sites::coto::get_urls().await?,
Supermercado::Farmacity => sites::farmacity::get_urls().await?,
})
}
async fn scrap_url(
client: &reqwest::Client,
url: String,
body: &str,
) -> anyhow::Result<PrecioPoint> {
let url_p = Url::parse(&url).unwrap();
match url_p.host_str().unwrap() {
"www.carrefour.com.ar" => {
sites::carrefour::parse(url, &tl::parse(body, tl::ParserOptions::default())?)
}
"diaonline.supermercadosdia.com.ar" => {
sites::dia::parse(url, &tl::parse(body, tl::ParserOptions::default())?)
}
"www.cotodigital3.com.ar" => {
sites::coto::parse(url, &tl::parse(body, tl::ParserOptions::default())?)
}
"www.jumbo.com.ar" => sites::jumbo::scrap(client, url, body).await,
"www.farmacity.com" => {
sites::farmacity::parse(url, &tl::parse(body, tl::ParserOptions::default())?)
}
s => bail!("Unknown host {}", s),
}
}
#[derive(Clone)]
struct AutoTelegram {
token: String,
chat_id: String,
}
#[derive(Clone)]
struct Auto {
db: Db,
telegram: Option<AutoTelegram>,
args: AutoArgs,
}
impl Auto {
async fn download_supermercado(self, supermercado: Supermercado) -> anyhow::Result<()> {
{
let t0 = now_sec();
match self.get_and_save_urls(&supermercado).await {
Ok(_) => {
self.inform(&format!(
"Downloaded url list {:?} (took {})",
&supermercado,
now_sec() - t0
))
.await
}
Err(err) => {
self.inform(&format!(
"[{:?}] FAILED url list: {:?} (took {})",
&supermercado,
err,
now_sec() - t0
))
.await
}
}
}
let links: Vec<String> = {
let mut links = self.db.get_urls_by_domain(supermercado.host()).await?;
if let Some(n) = self.args.n_products {
links.truncate(n);
}
links
};
// {
// let debug_path = PathBuf::from("debug/");
// tokio::fs::create_dir_all(&debug_path).await.unwrap();
// let file_path = debug_path.join(format!("{}.txt", nanoid!()));
// tokio::fs::write(&file_path, &links.join("\n"))
// .await
// .unwrap();
// tracing::info!("Lista de {:?}: {:?}", &supermercado, file_path.display());
// }
{
let t0 = now_sec();
let counters = fetch_list(&self.db, links).await;
self.inform(&format!(
"Downloaded {:?}: {:?} (took {})",
&supermercado,
counters,
now_sec() - t0
))
.await;
}
Ok(())
}
async fn inform_time<T: Future<Output = R>, R>(&self, msg: &str, action: T) -> R {
let t0 = now_sec();
let res = action.await;
self.inform(&format!("{} (took {})", msg, now_sec() - t0))
.await;
res
}
async fn get_and_save_urls(&self, supermercado: &Supermercado) -> anyhow::Result<()> {
let urls = get_urls(supermercado).await?;
self.db.save_producto_urls(urls).await?;
Ok(())
}
async fn inform(&self, msg: &str) {
tracing::info!("{}", msg);
if let Some(telegram) = &self.telegram {
let u = Url::parse_with_params(
&format!("https://api.telegram.org/bot{}/sendMessage", telegram.token),
&[
("chat_id", telegram.chat_id.clone()),
("text", msg.to_string()),
],
)
.unwrap();
reqwest::get(u).await.unwrap();
}
}
}
async fn auto_cli(args: AutoArgs) -> anyhow::Result<()> {
let auto = {
let db = Db::connect().await?;
@ -440,7 +272,12 @@ async fn auto_cli(args: AutoArgs) -> anyhow::Result<()> {
}
}
};
Auto { db, telegram, args }
Auto {
db,
telegram,
args,
scraper: Scraper::new(),
}
};
auto.inform("[auto] Empezando scrap").await;

274
scraper-rs/src/proxy_client.rs Normal file
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@ -0,0 +1,274 @@
use std::{collections::HashSet, str::FromStr, sync::Arc, time::Duration};
use anyhow::Context;
use futures::{future::join_all, stream, FutureExt, StreamExt};
use indicatif::ProgressBar;
use itertools::Itertools;
use proxy_scraper_checker::{Proxy, ProxyChecker};
use rand::Rng;
use reqwest::{IntoUrl, Url};
use serde::Deserialize;
use tokio::sync::{RwLock, Semaphore};
use crate::build_header_map;
#[derive(Default, Debug)]
pub struct ProxyClient {
proxies: RwLock<Option<Vec<Url>>>,
clients: RwLock<[Option<reqwest::Client>; 10]>,
}
impl ProxyClient {
pub async fn do_request(&self, url: impl IntoUrl + Clone) -> anyhow::Result<reqwest::Response> {
loop {
let client = {
let mut client_ptr = self.clients.write().await;
if let Some(client) = (*client_ptr).clone() {
client
} else {
let proxies = self.get_proxies().await?;
// let proxy = stream::iter(proxies)
// .filter_map(|proxy| async {
// println!("trying proxy {}", proxy);
// check_proxy(
// proxy.clone(),
// "https://www.cotodigital3.com.ar/sitios/cdigi/".to_string(),
// 3,
// )
// .map(|r| r.ok())
// .await
// })
// .next()
// .await
// .unwrap()
// .clone();
let proxy = loop {
let proxy = proxies[rand::thread_rng().gen_range(0..proxies.len())].clone();
println!("trying proxy {}", proxy);
match check_proxy(
proxy,
"https://www.cotodigital3.com.ar/sitios/cdigi/".to_string(),
10,
)
.await
{
Ok(proxy) => break proxy,
Err(_) => continue,
}
};
println!("chose proxy {}", proxy);
let new_client = reqwest::ClientBuilder::default()
.timeout(Duration::from_secs(300))
.connect_timeout(Duration::from_secs(150))
.default_headers(build_header_map())
.proxy(reqwest::Proxy::all(proxy)?)
.build()
.unwrap();
let ret = new_client.clone();
*client_ptr = Some(new_client);
ret
}
};
let req = client.get(url.clone()).build()?;
match client.execute(req).await {
Ok(res) => return Ok(res),
Err(_) => {
// possibly IP locked, reset client to get another IP
{
println!("request failed, resetting client");
*(self.clients.write().await) = None;
}
}
}
}
}
pub async fn get_proxies(&self) -> anyhow::Result<Vec<Url>> {
let mut proxies_ptr = self.proxies.write().await;
if let Some(proxies) = (*proxies_ptr).clone() {
Ok(proxies)
} else {
// let scraper = proxy_scraper_checker::ProxyScraper::default();
// let archive_urls = scraper.scrape_archive_urls().await?;
// let futures: Vec<_> = archive_urls
// .into_iter()
// .map(|url| {
// tokio::task::spawn({
// let value = scraper.clone();
// async move { value.scrape_proxies(url, true).await }
// })
// })
// .collect();
// let results: Vec<_> = join_all(futures).await.into_iter().try_collect()?;
// let proxies: Vec<_> = results
// .into_iter()
// .filter_map(|res| if let Ok(res) = res { Some(res) } else { None })
// .flatten()
// .filter(|x| {
// if let Proxy::Socks5(_) = x {
// true
// } else {
// false
// }
// })
// .collect();
let socks5_proxies = get_proxy_list_from_raw_list(
"https://raw.githubusercontent.com/TheSpeedX/SOCKS-List/master/socks5.txt",
"socks5",
)
.await?;
let http_proxies = get_proxy_list_from_raw_list(
"https://raw.githubusercontent.com/TheSpeedX/SOCKS-List/master/http.txt",
"http",
)
.await?;
let fosy_http_proxies =
get_proxy_list_from_raw_list("https://fosy.club/api/free/list?type=http", "http")
.await?;
let fosy_socks5_proxies = get_proxy_list_from_raw_list(
"https://fosy.club/api/free/list?type=socks5",
"socks5",
)
.await?;
let geonode_proxies = get_proxy_list_geonode()
.await
.inspect_err(|e| tracing::error!("getting proxy list ({error})", error = e))?;
// let proxies: Vec<_> = [
// // socks5_proxies,
// // http_proxies,
// fosy_http_proxies,
// fosy_socks5_proxies,
// geonode_proxies,
// ]
// .into_iter()
// .flatten()
// .collect();
let checked_proxies: Vec<_> = {
let proxiess: HashSet<_> = proxies
.into_iter()
.filter_map(|p| match p.scheme() {
"socks5" => Some(Proxy::Socks5(p.host_str()?.to_string())),
"http" => Some(Proxy::Http(p.host_str()?.to_string())),
_ => None,
})
.collect();
let checker = ProxyChecker::new(
Arc::new(Semaphore::new(32)),
ProgressBar::new(proxiess.len().try_into().unwrap()),
);
checker
.check_proxies(proxiess.into(), "https://milei.nulo.in/".to_string(), 8)
.await?
.into_iter()
.map(|p| Url::from_str(&p.url()))
.try_collect()?
};
let ret = checked_proxies.clone();
println!("got {} proxies", ret.len());
*proxies_ptr = Some(checked_proxies);
Ok(ret)
}
}
}
pub async fn check_proxy(proxy: Url, url: String, timeout: u64) -> anyhow::Result<Url> {
let client = reqwest::Client::builder()
.proxy(reqwest::Proxy::all(proxy.clone())?)
.timeout(Duration::from_secs(timeout))
.build()?;
client
.get(url)
.send()
.await
.context("Request failed")?
.error_for_status()
.context("Request returned an error status code")?;
Ok(proxy)
}
// pub async fn find_first_working_proxy(proxies: Vec<String>) -> anyhow::Result<Url> {
// let semaphore = Arc::new(Semaphore::new(64));
// for proxy in proxies {
// let semaphore = semaphore.clone();
// }
// let proxy = stream::iter(proxies)
// .filter_map(|proxy| async {
// println!("trying proxy {}", proxy);
// check_proxy(
// proxy.clone(),
// "https://www.cotodigital3.com.ar/sitios/cdigi/".to_string(),
// 3,
// )
// .map(|r| r.ok())
// .await
// }).concu
// .next()
// .await
// .unwrap()
// .clone();
// }
pub async fn get_proxy_list_from_raw_list<U: IntoUrl>(
list_url: U,
protocol: &str,
) -> anyhow::Result<Vec<Url>> {
let res = reqwest::get(list_url).await?;
let text = res.text().await?;
Ok(text
.lines()
.map(|l| Url::from_str(&format!("{}://{}", protocol, l)))
.filter_map(|r| r.ok())
.collect())
}
#[derive(Deserialize)]
struct Ips {
data: Vec<Ip>,
}
#[derive(Deserialize)]
struct Ip {
ip: String,
port: String,
protocols: Vec<String>,
}
pub async fn get_proxy_list_geonode() -> anyhow::Result<Vec<Url>> {
let ips = reqwest::get("https://proxylist.geonode.com/api/proxy-list?protocols=socks5%2Chttp&filterUpTime=90&limit=500&page=1&sort_by=lastChecked&sort_type=asc").await?.json::<Ips>().await?;
Ok(ips
.data
.into_iter()
.map(|i| Url::from_str(&format!("{}://{}:{}", i.protocols[0], i.ip, i.port)))
.filter_map(|r| r.ok())
.collect())
}
pub async fn get_proxy_list_checkerproxy() -> anyhow::Result<Vec<Url>> {
let scraper = proxy_scraper_checker::ProxyScraper::default();
let archive_urls = scraper.scrape_archive_urls().await?;
let futures: Vec<_> = archive_urls
.into_iter()
.map(|url| {
tokio::task::spawn({
let value = scraper.clone();
async move { value.scrape_proxies(url, true).await }
})
})
.collect();
let results: Vec<_> = join_all(futures).await.into_iter().try_collect()?;
let proxies: Vec<_> = results
.into_iter()
.filter_map(|res| if let Ok(res) = res { Some(res) } else { None })
.flatten()
.map(|p| Url::from_str(&p.url()))
.try_collect()?;
Ok(proxies)
}

116
scraper-rs/src/scraper.rs Normal file
View file

@ -0,0 +1,116 @@
use std::sync::Arc;
use reqwest::Url;
use simple_error::bail;
use crate::{
anyhow_retry_if_wasnt_not_found, build_client, get_fetch_retry_policy, get_parse_retry_policy,
proxy_client::ProxyClient, sites, supermercado::Supermercado, PrecioPoint,
};
#[derive(Debug, Clone)]
pub struct Scraper {
default_client: reqwest::Client,
proxy_client: Arc<ProxyClient>,
}
impl Scraper {
pub fn new() -> Self {
Self {
default_client: build_client(),
proxy_client: ProxyClient::default().into(),
}
}
pub async fn get_urls_for_supermercado(
&self,
supermercado: &Supermercado,
) -> anyhow::Result<Vec<String>> {
match supermercado {
Supermercado::Dia => sites::dia::get_urls().await,
Supermercado::Jumbo => sites::jumbo::get_urls().await,
Supermercado::Carrefour => sites::carrefour::get_urls().await,
Supermercado::Coto => sites::coto::get_urls(&self.proxy_client).await,
Supermercado::Farmacity => sites::farmacity::get_urls().await,
}
}
#[tracing::instrument(skip(self))]
pub async fn fetch_and_parse(&self, url: String) -> Result<PrecioPoint, anyhow::Error> {
async fn fetch_and_scrap(
scraper: &Scraper,
url: String,
) -> Result<PrecioPoint, anyhow::Error> {
let body = scraper.fetch_body(&url).await?;
let maybe_point = { scraper.scrap_url(url, &body).await };
let point = match maybe_point {
Ok(p) => Ok(p),
Err(err) => {
// let now: DateTime<Utc> = Utc::now();
// let debug_path = PathBuf::from(format!("debug-{}/", now.format("%Y-%m-%d")));
// tokio::fs::create_dir_all(&debug_path).await.unwrap();
// let file_path = debug_path.join(format!("{}.html", nanoid!()));
// tokio::fs::write(&file_path, &body).await.unwrap();
// tracing::debug!(error=%err, "Failed to parse, saved body at {}",file_path.display());
tracing::debug!(error=%err, "Failed to parse");
Err(err)
}
}?;
Ok(point)
}
get_parse_retry_policy()
.retry_if(
|| fetch_and_scrap(self, url.clone()),
anyhow_retry_if_wasnt_not_found,
)
.await
}
async fn fetch_body(&self, url_string: &str) -> anyhow::Result<String> {
let url = Url::parse(url_string)?;
get_fetch_retry_policy()
.retry_if(
|| self.request_and_body(url.clone()),
anyhow_retry_if_wasnt_not_found,
)
.await
}
async fn request_and_body(&self, url: Url) -> anyhow::Result<String> {
let res = match Supermercado::from_url(&url) {
Some(Supermercado::Coto) => self.proxy_client.do_request(url).await?,
_ => self
.default_client
.execute(self.default_client.get(url).build()?)
.await?
.error_for_status()?,
};
Ok(res.text().await?)
}
pub async fn scrap_url(&self, url: String, res_body: &str) -> anyhow::Result<PrecioPoint> {
let url_p = Url::parse(&url).unwrap();
match Supermercado::from_url(&url_p) {
Some(Supermercado::Carrefour) => {
sites::carrefour::parse(url, &tl::parse(res_body, tl::ParserOptions::default())?)
}
Some(Supermercado::Dia) => {
sites::dia::parse(url, &tl::parse(res_body, tl::ParserOptions::default())?)
}
Some(Supermercado::Coto) => {
sites::coto::parse(url, &tl::parse(res_body, tl::ParserOptions::default())?)
}
Some(Supermercado::Jumbo) => {
sites::jumbo::scrap(&self.default_client, url, res_body).await
}
Some(Supermercado::Farmacity) => {
sites::farmacity::parse(url, &tl::parse(res_body, tl::ParserOptions::default())?)
}
None => bail!("Unknown URL host {}", url),
}
}
}

24
scraper-rs/src/sites/coto.rs
View file

@ -1,10 +1,12 @@
use again::Task;
use anyhow::{anyhow, Context};
use futures::{stream, StreamExt, TryFutureExt, TryStreamExt};
use itertools::Itertools;
use reqwest::Url;
use crate::{
build_client, build_coto_client, do_request, get_fetch_retry_policy, retry_if_wasnt_not_found, PrecioPoint
anyhow_retry_if_wasnt_not_found, get_fetch_retry_policy, proxy_client::ProxyClient,
retry_if_wasnt_not_found, PrecioPoint,
};
pub fn parse(url: String, dom: &tl::VDom) -> Result<PrecioPoint, anyhow::Error> {
@ -78,8 +80,7 @@ pub fn parse(url: String, dom: &tl::VDom) -> Result<PrecioPoint, anyhow::Error>
})
}
pub async fn get_urls() -> anyhow::Result<Vec<String>> {
let client = build_coto_client();
pub async fn get_urls(proxy_client: &ProxyClient) -> anyhow::Result<Vec<String>> {
let initial = Url::parse("https://www.cotodigital3.com.ar/sitios/cdigi/browse?Nf=product.endDate%7CGTEQ+1.7032032E12%7C%7Cproduct.startDate%7CLTEQ+1.7032032E12&Nr=AND%28product.sDisp_200%3A1004%2Cproduct.language%3Aespa%C3%B1ol%2COR%28product.siteId%3ACotoDigital%29%29")?;
let page_size = 50;
@ -90,12 +91,21 @@ pub async fn get_urls() -> anyhow::Result<Vec<String>> {
.append_pair("No", &(i * page_size).to_string())
.append_pair("Nrpp", &(page_size).to_string())
.finish();
let client = &client;
async move {
let text = get_fetch_retry_policy()
let text: String = get_fetch_retry_policy()
.retry_if(
|| do_request(client, u.as_str()).and_then(|r| r.text()),
retry_if_wasnt_not_found,
|| {
async fn asdf(
proxy_client: &ProxyClient,
url: Url,
) -> anyhow::Result<String> {
let res = proxy_client.do_request(url).await?.error_for_status()?;
Ok(res.text().await?)
}
let url = u.clone();
asdf(proxy_client, url)
},
anyhow_retry_if_wasnt_not_found,
)
.await?;
let dom = tl::parse(&text, tl::ParserOptions::default())?;

11
scraper-rs/src/supermercado.rs
View file

@ -1,4 +1,5 @@
use clap::ValueEnum;
use reqwest::Url;
#[derive(ValueEnum, Clone, Debug, Copy)]
pub enum Supermercado {
@ -18,4 +19,14 @@ impl Supermercado {
Self::Farmacity => "www.farmacity.com",
}
}
pub fn from_url(url: &Url) -> Option<Self> {
match url.host_str().unwrap() {
"www.carrefour.com.ar" => Some(Self::Carrefour),
"diaonline.supermercadosdia.com.ar" => Some(Self::Dia),
"www.cotodigital3.com.ar" => Some(Self::Coto),
"www.jumbo.com.ar" => Some(Self::Jumbo),
"www.farmacity.com" => Some(Self::Farmacity),
_ => None,
}
}
}