71cf752b41
closes #1 Implements a background watchdog task that: 1. calls neptune-core /network rpc every N seconds (default: 10) 2. emits log message on any state change 3. sends detailed email alert to admin on any state change Changes: * AppState now has internal Arc<RwLock<AppStateInner>> to permit watchdog task to mutate the rpc_client field. * adjust application to AppState changes (use locks) * not_found functions no longer accept state arg * move state initialization into AppState::init() * add optional alert parameters: admin-email, smtp-* * add neptune_rpc module with watchdog task * add alert_email module * simplify main() * log warnings if alert parameters not set * add chrono dep * add lettre dep
58 lines
2.1 KiB
Rust
58 lines
2.1 KiB
Rust
use crate::model::app_state::AppState;
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use crate::model::config::Config;
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use crate::model::config::SmtpMode;
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use clap::Parser;
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use lettre::transport::smtp::authentication::Credentials;
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use lettre::{AsyncSmtpTransport, AsyncTransport, Message, Tokio1Executor};
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use tracing::{info, warn};
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pub fn can_send_alerts() -> bool {
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Config::parse().alert_config().is_some()
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}
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pub async fn send(
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state: &AppState,
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subject: &str,
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body: String,
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) -> std::result::Result<bool, anyhow::Error> {
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match state.read().await.config.alert_config() {
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None => {
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warn!("Alert emails disabled. alert not sent. consider confiuring smtp parameters. subject: {subject}");
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Ok(false)
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}
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Some(alert) => {
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let email = Message::builder()
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.from(alert.smtp_from_email.parse()?)
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.to(alert.admin_email.parse()?)
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.subject(subject)
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.body(body)?;
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// Create SMTP client credentials using username and password
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let creds = Credentials::new(alert.smtp_user.to_string(), alert.smtp_pass.to_string());
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// Open a secure connection to the SMTP server, possibly using STARTTLS
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let relay = match alert.smtp_mode {
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SmtpMode::Starttls => {
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AsyncSmtpTransport::<Tokio1Executor>::starttls_relay(&alert.smtp_host)?
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}
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SmtpMode::Smtps => AsyncSmtpTransport::<Tokio1Executor>::relay(&alert.smtp_host)?,
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};
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let mailer = relay.credentials(creds).build();
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// Attempt to send the email via the SMTP transport
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match mailer.send(email).await {
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Ok(_) => info!(
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"alert email sent successfully. to: {}, subject: {subject}, smtp_host: {}",
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alert.admin_email, alert.smtp_host
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),
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Err(e) => warn!(
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"error send alert email. to: {}, subject: {subject}, smtp_host: {}. error: {:?}",
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alert.admin_email, alert.smtp_host, e
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),
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}
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Ok(true)
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}
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}
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}
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