initial commit

fluxer_metrics/src/alerts/discord.rs

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+/*
+ * Copyright (C) 2026 Fluxer Contributors
+ *
+ * This file is part of Fluxer.
+ *
+ * Fluxer is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Fluxer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+use anyhow::Result;
+use serde::Serialize;
+use time::OffsetDateTime;
+use time::format_description::well_known::Rfc3339;
+use tracing::info;
+
+use crate::db::CrashEventData;
+
+#[derive(Serialize)]
+struct DiscordWebhookPayload {
+    embeds: Vec<DiscordEmbed>,
+}
+
+#[derive(Serialize)]
+struct DiscordEmbed {
+    title: String,
+    description: String,
+    color: u32,
+    fields: Vec<DiscordField>,
+    timestamp: String,
+    footer: DiscordFooter,
+}
+
+#[derive(Serialize)]
+struct DiscordField {
+    name: String,
+    value: String,
+    inline: bool,
+}
+
+#[derive(Serialize)]
+struct DiscordFooter {
+    text: String,
+}
+
+pub async fn send_discord_crash_alert(
+    webhook_url: &str,
+    crash: &CrashEventData,
+    admin_endpoint: Option<&str>,
+) -> Result<()> {
+    let timestamp =
+        OffsetDateTime::from_unix_timestamp_nanos(i128::from(crash.timestamp) * 1_000_000)
+            .unwrap_or_else(|_| OffsetDateTime::now_utc());
+
+    let stacktrace = if crash.stacktrace.len() > 1000 {
+        format!("{}...\n\n(truncated)", &crash.stacktrace[..1000])
+    } else {
+        crash.stacktrace.clone()
+    };
+
+    let guild_link = admin_endpoint.map_or_else(
+        || format!("Guild ID: {}", crash.guild_id),
+        |ep| format!("{ep}/guilds/{}", crash.guild_id),
+    );
+
+    let payload = DiscordWebhookPayload {
+        embeds: vec![DiscordEmbed {
+            title: "Guild Crash Detected".to_string(),
+            description: format!(
+                "A guild process has crashed on the gateway.\n\n**Guild:** {guild_link}"
+            ),
+            color: 0x00ED_4245,
+            fields: vec![
+                DiscordField {
+                    name: "Guild ID".to_string(),
+                    value: format!("`{}`", crash.guild_id),
+                    inline: true,
+                },
+                DiscordField {
+                    name: "Crash ID".to_string(),
+                    value: format!("`{}`", crash.id),
+                    inline: true,
+                },
+                DiscordField {
+                    name: "Stacktrace".to_string(),
+                    value: format!("```\n{stacktrace}\n```"),
+                    inline: false,
+                },
+            ],
+            timestamp: timestamp.format(&Rfc3339).unwrap_or_default(),
+            footer: DiscordFooter {
+                text: "Fluxer Metrics".to_string(),
+            },
+        }],
+    };
+
+    let client = reqwest::Client::new();
+    let response = client.post(webhook_url).json(&payload).send().await?;
+
+    if response.status().is_success() {
+        info!("Discord crash alert sent for guild {}", crash.guild_id);
+    } else {
+        let status = response.status();
+        let body = response.text().await.unwrap_or_default();
+        anyhow::bail!("Discord webhook failed with status {status}: {body}");
+    }
+
+    Ok(())
+}

fluxer_metrics/src/alerts/mod.rs

@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2026 Fluxer Contributors
+ *
+ * This file is part of Fluxer.
+ *
+ * Fluxer is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Fluxer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+pub mod discord;
+
+pub use discord::*;