feat: statcheck worker

Signed-off-by: Raito Bezarius <masterancpp@gmail.com>

ofborg/src/bin/statcheck-worker.rs

@@ -0,0 +1,79 @@
+/// Statuses and checks worker
+/// - will keep a database of changes
+///     - their statuses
+///     - their checks
+/// - is VCS/CI agnostic
+use std::env;
+use std::error::Error;
+
+use async_std::task;
+use ofborg::config;
+use ofborg::easyamqp;
+use ofborg::easyamqp::ChannelExt;
+use ofborg::easyamqp::ConsumerExt;
+use ofborg::easylapin;
+use ofborg::tasks;
+use tracing::info;
+
+fn main() -> Result<(), Box<dyn Error>> {
+    ofborg::setup_log();
+
+    let arg = env::args()
+        .nth(1)
+        .expect("usage: statcheck-worker <config>");
+    let cfg = config::load(arg.as_ref());
+
+    let conn = easylapin::from_config(&cfg.rabbitmq)?;
+    let mut chan = task::block_on(conn.create_channel())?;
+
+    // an RPC queue for verbs
+    let api_queue_name = "statcheck-api".to_owned();
+    // an event queue to be notified about statuses & checks changes.
+    let event_queue_name = "statcheck-events".to_owned();
+
+    chan.declare_exchange(easyamqp::ExchangeConfig {
+        exchange: api_queue_name.clone(),
+        exchange_type: easyamqp::ExchangeType::Topic,
+        passive: false,
+        durable: true,
+        auto_delete: false,
+        no_wait: false,
+        internal: false,
+    })?;
+
+    chan.declare_queue(easyamqp::QueueConfig {
+        queue: api_queue_name.clone(),
+        passive: false,
+        durable: true,
+        exclusive: false,
+        auto_delete: false,
+        no_wait: false,
+    })?;
+
+    chan.bind_queue(easyamqp::BindQueueConfig {
+        queue: api_queue_name.clone(),
+        exchange: api_queue_name.clone(),
+        routing_key: None,
+        no_wait: false,
+    })?;
+
+    let handle = easylapin::WorkerChannel(chan).consume(
+        tasks::statcheck_collector::StatusCheckCollector::new(cfg.statcheck.clone().db),
+        easyamqp::ConsumeConfig {
+            queue: api_queue_name.clone(),
+            consumer_tag: format!("{}-{}", cfg.whoami(), api_queue_name),
+            no_local: false,
+            no_ack: false,
+            no_wait: false,
+            exclusive: false,
+        },
+    )?;
+
+    info!("Waiting for API calls on {}", api_queue_name);
+    info!("Notifying of new changes on {}", event_queue_name);
+    task::block_on(handle);
+
+    drop(conn); // Close connection.
+    info!("Closed the session... EOF");
+    Ok(())
+}

ofborg/src/tasks/status_check_collector.rs

@@ -0,0 +1,46 @@
+use std::path::PathBuf;
+
+use tracing::{debug_span, error};
+
+use crate::worker;
+
+#[derive(Serialize, Deserialize, Debug)]
+enum StatusCheckRPCMessage {
+    ListStatuses,
+    ListChecks,
+}
+
+#[allow(dead_code)]
+struct StatusCheckCollector {
+    db_path: PathBuf,
+}
+
+// RPC API worker
+impl worker::SimpleWorker for StatusCheckCollector {
+    type J = StatusCheckRPCMessage;
+
+    fn msg_to_job(
+        &mut self,
+        _method: &str,
+        _headers: &Option<String>,
+        body: &[u8],
+    ) -> Result<Self::J, String> {
+        match serde_json::from_slice(body) {
+            Ok(e) => Ok(e),
+            Err(e) => {
+                error!(
+                    "Failed to deserialize StatusCheckRPCMessage: {:?}",
+                    String::from_utf8(body.to_vec())
+                );
+                panic!("{:?}", e);
+            }
+        }
+    }
+
+    fn consumer(&mut self, job: &Self::J) -> worker::Actions {
+        let span = debug_span!("command");
+        let _enter = span.enter();
+
+        vec![worker::Action::Ack]
+    }
+}