Spaces:
Running
Running
File size: 7,306 Bytes
bad8640 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 | use crate::infrastructure::db::DbPool;
use crate::interfaces::http::api::RealtimeEvent;
use reqwest::Client;
use serde::{Deserialize, Serialize};
use std::sync::Arc;
use tokio::sync::broadcast;
use tracing::{error, info, warn};
#[derive(Serialize, Deserialize, Clone, sqlx::FromRow)]
pub struct WebhookRecord {
pub webhook_id: String,
pub merchant_id: String,
pub url: String,
pub secret: String,
pub events: serde_json::Value,
}
pub struct WebhookService {
pool: DbPool,
client: Client,
}
impl WebhookService {
pub fn new(pool: DbPool) -> Self {
Self {
pool,
client: Client::builder()
.timeout(std::time::Duration::from_secs(10))
.build()
.unwrap(),
}
}
pub async fn run(&self, mut rx: broadcast::Receiver<RealtimeEvent>) {
info!("Webhook Service started.");
loop {
match rx.recv().await {
Ok(event) => {
let service = self.clone_self();
tokio::spawn(async move {
if let Err(e) = service.process_event(event).await {
error!("Error delivering webhook: {:?}", e);
}
});
}
Err(broadcast::error::RecvError::Lagged(n)) => {
warn!("Webhook Service lagged by {} events", n);
}
Err(broadcast::error::RecvError::Closed) => break,
}
}
}
fn clone_self(&self) -> Arc<Self> {
Arc::new(Self {
pool: self.pool.clone(),
client: self.client.clone(),
})
}
async fn process_event(
&self,
event: RealtimeEvent,
) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
let merchant_id = match &event {
RealtimeEvent::OrderStatusChanged { merchant_id, .. } => merchant_id,
RealtimeEvent::NewOrder { merchant_id, .. } => merchant_id,
RealtimeEvent::RiskAlert { merchant_id, .. } => merchant_id,
_ => return Ok(()), // Ignore other events for webhooks for now
};
let event_type = match &event {
RealtimeEvent::OrderStatusChanged { new_status, .. } => {
format!("order.{}", new_status.to_lowercase().replace("_", "."))
}
RealtimeEvent::NewOrder { .. } => "order.created".to_string(),
RealtimeEvent::RiskAlert { .. } => "risk.alert".to_string(),
_ => "system.event".to_string(),
};
// Fetch active webhooks for this merchant
let webhooks = sqlx::query_as::<_, WebhookRecord>(
"SELECT webhook_id, merchant_id, url, secret, events FROM merchant_webhooks WHERE merchant_id = $1 AND is_active = TRUE"
)
.bind(merchant_id)
.fetch_all(&self.pool)
.await?;
for webhook in webhooks {
// Check if webhook is subscribed to this event
let subscribed_events: Vec<String> =
serde_json::from_value(webhook.events.clone()).unwrap_or_default();
if !subscribed_events.contains(&event_type)
&& !subscribed_events.contains(&"*".to_string())
{
continue;
}
self.deliver_webhook(webhook, event.clone(), &event_type)
.await;
}
Ok(())
}
async fn deliver_webhook(
&self,
webhook: WebhookRecord,
event: RealtimeEvent,
event_type: &str,
) {
let payload = serde_json::json!({
"event": event_type,
"timestamp": chrono::Utc::now().to_rfc3339(),
"data": event
});
let payload_str = payload.to_string();
// HMAC-SHA256 signature for security
use hmac::{Hmac, Mac};
use sha2::Sha256;
type HmacSha256 = Hmac<Sha256>;
let mut mac = HmacSha256::new_from_slice(webhook.secret.as_bytes())
.expect("HMAC can take key of any size");
mac.update(payload_str.as_bytes());
let signature = hex::encode(mac.finalize().into_bytes());
let max_attempts = 3;
let mut attempt = 0;
let mut delay = std::time::Duration::from_secs(1);
while attempt < max_attempts {
let attempt_number = attempt + 1;
let (status_code, success, response_body) = match self
.client
.post(&webhook.url)
.header("Content-Type", "application/json")
.header("X-Rtix-Signature", &signature)
.header("X-Rtix-Event", event_type)
.body(payload_str.clone())
.send()
.await
{
Ok(resp) => {
let status = resp.status();
let sc = Some(status.as_u16() as i32);
let succ = status.is_success();
let body = match resp.text().await {
Ok(t) => Some(t),
Err(e) => Some(e.to_string()),
};
if succ {
info!(
"Webhook {} delivered successfully to {} on attempt {}",
webhook.webhook_id, webhook.url, attempt_number
);
} else {
warn!(
"Webhook {} delivery failed with status {} on attempt {}/{} to {}",
webhook.webhook_id, status, attempt_number, max_attempts, webhook.url
);
}
(sc, succ, body)
}
Err(e) => {
let body = Some(e.to_string());
error!(
"Webhook {} delivery error on attempt {}/{} to {}: {}",
webhook.webhook_id, attempt_number, max_attempts, webhook.url, e
);
(None, false, body)
}
};
// Insert a log record
let log_id = uuid::Uuid::new_v4().to_string();
let log_query = "INSERT INTO webhook_delivery_logs (log_id, webhook_id, merchant_id, url, event_type, payload, status_code, success, response_body, attempt_number) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10)";
if let Err(err) = sqlx::query(log_query)
.bind(&log_id)
.bind(&webhook.webhook_id)
.bind(&webhook.merchant_id)
.bind(&webhook.url)
.bind(event_type)
.bind(&payload)
.bind(status_code)
.bind(success)
.bind(&response_body)
.bind(attempt_number)
.execute(&self.pool)
.await
{
error!("Failed to write webhook delivery log: {}", err);
}
if success {
return;
}
attempt += 1;
if attempt < max_attempts {
tokio::time::sleep(delay).await;
delay *= 2;
}
}
}
}
|