ofborg/src/easyamqp.rs

@@ -1,3 +1,5 @@
+use serde::{Deserialize, Serialize};
+
 pub struct ConsumeConfig {
     /// Specifies the name of the queue to consume from.
     pub queue: String,
@@ -263,6 +265,12 @@ pub trait ChannelExt {
     fn declare_exchange(&mut self, config: ExchangeConfig) -> Result<(), Self::Error>;
     fn declare_queue(&mut self, config: QueueConfig) -> Result<(), Self::Error>;
     fn bind_queue(&mut self, config: BindQueueConfig) -> Result<(), Self::Error>;
+    fn send_request<T: ?Sized + Serialize + std::marker::Sync, U: for<'a> Deserialize<'a>>(
+        &mut self,
+        exchange: Option<&str>,
+        routing_key: Option<&str>,
+        msg: &T,
+    ) -> impl std::future::Future<Output = Result<U, Self::Error>> + Send;
 }
 
 pub trait ConsumerExt<'a, C> {

ofborg/src/easylapin.rs

@@ -7,7 +7,7 @@ use crate::easyamqp::{
 };
 use crate::notifyworker::{NotificationReceiver, SimpleNotifyWorker};
 use crate::ofborg;
-use crate::worker::{Action, SimpleWorker};
+use crate::worker::{prepare_queue_message, Action, SimpleWorker};
 
 use async_std::future::Future;
 use async_std::stream::StreamExt;
@@ -17,8 +17,9 @@ use lapin::options::{
     BasicAckOptions, BasicConsumeOptions, BasicNackOptions, BasicPublishOptions, BasicQosOptions,
     ExchangeDeclareOptions, QueueBindOptions, QueueDeclareOptions,
 };
-use lapin::types::{AMQPValue, FieldTable};
+use lapin::types::{AMQPValue, FieldTable, ShortString};
 use lapin::{BasicProperties, Channel, Connection, ConnectionProperties, ExchangeKind};
+use serde::{Deserialize, Serialize};
 use tracing::{debug, trace};
 
 pub fn from_config(cfg: &RabbitMqConfig) -> Result<Connection, lapin::Error> {
@@ -82,13 +83,71 @@ impl ChannelExt for Channel {
         ))?;
         Ok(())
     }
+
+    async fn send_request<T: ?Sized + Serialize, U: for<'a> Deserialize<'a>>(
+        &mut self,
+        exchange: Option<&str>,
+        routing_key: Option<&str>,
+        msg: &T,
+    ) -> Result<U, Self::Error> {
+        let mut msg = prepare_queue_message(exchange, routing_key, msg);
+
+        let correlation_id: ShortString = format!("{}", uuid::Uuid::new_v4().as_simple()).into();
+        let mut props = BasicProperties::default()
+            .with_reply_to("amq.rabbitmq.reply-to".into())
+            .with_correlation_id(correlation_id.clone())
+            .with_delivery_mode(2); // do not lose pastebins please
+
+        if let Some(s) = msg.content_type {
+            props = props.with_content_type(s.into());
+        }
+
+        trace!(?exchange, ?routing_key, "sending a RPC request");
+        let confirmation = self
+            .basic_publish(
+                &msg.exchange.take().unwrap_or_else(|| "".to_owned()),
+                &msg.routing_key.take().unwrap_or_else(|| "".to_owned()),
+                BasicPublishOptions::default(),
+                &msg.content,
+                props,
+            )
+            .await?
+            .await?;
+
+        trace!(?confirmation, "RPC request sent");
+
+        let mut consumer = self
+            .basic_consume(
+                "amq.rabbitmq.reply-to".into(),
+                "whoami",
+                BasicConsumeOptions::default(),
+                FieldTable::default(),
+            )
+            .await?;
+
+        while let Some(Ok(deliver)) = consumer.next().await {
+            debug!(?deliver.delivery_tag, "received an RPC reply");
+            if let Some(deliver_correlation_id) = deliver.properties.correlation_id().as_ref() {
+                if deliver_correlation_id == &correlation_id {
+                    trace!(?deliver_correlation_id, "received the expected RPC reply");
+                    return Ok(serde_json::from_slice(&deliver.data).unwrap());
+                }
+            }
+        }
+
+        panic!("did not receive an RPC reply");
+    }
 }
 
 impl<'a, W: SimpleWorker + 'a> ConsumerExt<'a, W> for Channel {
     type Error = lapin::Error;
     type Handle = Pin<Box<dyn Future<Output = ()> + 'a>>;
 
-    fn consume(self, mut worker: W, config: ConsumeConfig) -> Result<Self::Handle, Self::Error> {
+    fn consume(
+        mut self,
+        mut worker: W,
+        config: ConsumeConfig,
+    ) -> Result<Self::Handle, Self::Error> {
         let mut consumer = task::block_on(self.basic_consume(
             &config.queue,
             &config.consumer_tag,
@@ -107,7 +166,7 @@ impl<'a, W: SimpleWorker + 'a> ConsumerExt<'a, W> for Channel {
                     )
                     .expect("worker unexpected message consumed");
 
-                for action in worker.consumer(&job) {
+                for action in worker.consumer(&mut self, &job) {
                     action_deliver(&self, &deliver, action)
                         .await
                         .expect("action deliver failure");

ofborg/src/tasks/eval/nixpkgs.rs

@@ -47,6 +47,7 @@ fn label_from_title(title: &str) -> Vec<String> {
 }
 
 pub struct NixpkgsStrategy<'a> {
+    chan: lapin::Channel,
     job: &'a EvaluationJob,
     pull: &'a hubcaps::pulls::PullRequest,
     issue: &'a Issue,
@@ -62,6 +63,7 @@ pub struct NixpkgsStrategy<'a> {
 impl<'a> NixpkgsStrategy<'a> {
     #[allow(clippy::too_many_arguments)]
     pub fn new(
+        chan: lapin::Channel,
         job: &'a EvaluationJob,
         pull: &'a hubcaps::pulls::PullRequest,
         issue: &'a Issue,
@@ -70,6 +72,7 @@ impl<'a> NixpkgsStrategy<'a> {
         nix: Nix,
     ) -> NixpkgsStrategy<'a> {
         Self {
+            chan,
             job,
             pull,
             issue,
@@ -205,7 +208,7 @@ impl<'a> NixpkgsStrategy<'a> {
     }
 
     fn update_rebuild_labels(
-        &self,
+        &mut self,
         dir: &Path,
         overall_status: &mut CommitStatus,
     ) -> Result<(), Error> {
@@ -230,19 +233,25 @@ impl<'a> NixpkgsStrategy<'a> {
         Ok(())
     }
 
-    fn gist_changed_paths(&self, attrs: &[PackageArch]) -> Option<String> {
-        crate::utils::pastebin::make_pastebin(
+    fn gist_changed_paths(&mut self, attrs: &[PackageArch]) -> Option<String> {
+        async_std::task::block_on(crate::utils::pastebin::make_pastebin(
+            &mut self.chan,
             "Changed Paths",
             attrs
                 .iter()
                 .map(|attr| format!("{}\t{}", &attr.architecture, &attr.package))
                 .collect::<Vec<String>>()
                 .join("\n"),
-        )
+        ))
+        .ok()
         .map(|pp| pp.uri)
     }
 
-    fn record_impacted_maintainers(&self, dir: &Path, attrs: &[PackageArch]) -> Result<(), Error> {
+    fn record_impacted_maintainers(
+        &mut self,
+        dir: &Path,
+        attrs: &[PackageArch],
+    ) -> Result<(), Error> {
         let changed_attributes = attrs
             .iter()
             .map(|attr| attr.package.split('.').collect::<Vec<&str>>())
@@ -252,13 +261,15 @@ impl<'a> NixpkgsStrategy<'a> {
             let m =
                 ImpactedMaintainers::calculate(&self.nix, dir, changed_paths, &changed_attributes);
 
-            let gist_url = crate::utils::pastebin::make_pastebin(
+            let gist_url = async_std::task::block_on(crate::utils::pastebin::make_pastebin(
+                &mut self.chan,
                 "Potential Maintainers",
                 match m {
                     Ok(ref maintainers) => format!("Maintainers:\n{}", maintainers),
                     Err(ref e) => format!("Ignorable calculation error:\n{:?}", e),
                 },
-            )
+            ))
+            .ok()
             .map(|pp| pp.uri);
 
             let prefix = get_prefix(self.repo.statuses(), &self.job.pr.head_sha)?;
@@ -304,7 +315,7 @@ impl<'a> NixpkgsStrategy<'a> {
         Ok(())
     }
 
-    fn check_meta_queue_builds(&self, dir: &Path) -> StepResult<Vec<BuildJob>> {
+    fn check_meta_queue_builds(&mut self, dir: &Path) -> StepResult<Vec<BuildJob>> {
         if let Some(ref possibly_touched_packages) = self.touched_packages {
             let prefix = get_prefix(self.repo.statuses(), &self.job.pr.head_sha)?;
 
@@ -352,8 +363,13 @@ impl<'a> NixpkgsStrategy<'a> {
                 }
                 Err(out) => {
                     status.set_url(
-                        crate::utils::pastebin::make_pastebin("Meta Check", out.display())
-                            .map(|pp| pp.uri),
+                        async_std::task::block_on(crate::utils::pastebin::make_pastebin(
+                            &mut self.chan,
+                            "Meta Check",
+                            out.display(),
+                        ))
+                        .ok()
+                        .map(|pp| pp.uri),
                     );
                     status.set(hubcaps::statuses::State::Failure)?;
                     Err(Error::Fail(String::from(

ofborg/src/tasks/evaluate.rs

@@ -73,7 +73,11 @@ impl<E: stats::SysEvents + 'static> worker::SimpleWorker for EvaluationWorker<E>
         }
     }
 
-    fn consumer(&mut self, job: &evaluationjob::EvaluationJob) -> worker::Actions {
+    fn consumer(
+        &mut self,
+        chan: &mut lapin::Channel,
+        job: &evaluationjob::EvaluationJob,
+    ) -> worker::Actions {
         let span = debug_span!("job", pr = ?job.pr.number);
         let _enter = span.enter();
 
@@ -95,7 +99,7 @@ impl<E: stats::SysEvents + 'static> worker::SimpleWorker for EvaluationWorker<E>
             &self.cloner,
             job,
         )
-        .worker_actions()
+        .worker_actions(chan)
     }
 }
 
@@ -180,26 +184,31 @@ impl<'a, E: stats::SysEvents + 'static> OneEval<'a, E> {
         )
     }
 
-    fn make_pastebin(&self, title: &str, contents: String) -> Option<PersistedPastebin> {
-        crate::utils::pastebin::make_pastebin(title, contents)
+    fn make_pastebin(
+        &mut self,
+        chan: &mut lapin::Channel,
+        title: &str,
+        contents: String,
+    ) -> Option<PersistedPastebin> {
+        async_std::task::block_on(crate::utils::pastebin::make_pastebin(chan, title, contents)).ok()
     }
 
-    fn worker_actions(&mut self) -> worker::Actions {
-        let eval_result = self.evaluate_job().map_err(|eval_error| match eval_error {
-            // Handle error cases which expect us to post statuses
-            // to github. Convert Eval Errors in to Result<_, CommitStatusWrite>
-            EvalWorkerError::EvalError(eval::Error::Fail(msg)) => {
-                self.update_status(msg, None, hubcaps::statuses::State::Failure)
-            }
-            EvalWorkerError::EvalError(eval::Error::FailWithPastebin(msg, title, content)) => self
-                .update_status(
-                    msg,
-                    self.make_pastebin(&title, content).map(|pp| pp.uri),
-                    hubcaps::statuses::State::Failure,
-                ),
-            EvalWorkerError::EvalError(eval::Error::CommitStatusWrite(e)) => Err(e),
-            EvalWorkerError::CommitStatusWrite(e) => Err(e),
-        });
+    fn worker_actions(&mut self, chan: &mut lapin::Channel) -> worker::Actions {
+        let eval_result = self
+            .evaluate_job(chan)
+            .map_err(|eval_error| match eval_error {
+                // Handle error cases which expect us to post statuses
+                // to github. Convert Eval Errors in to Result<_, CommitStatusWrite>
+                EvalWorkerError::EvalError(eval::Error::Fail(msg)) => {
+                    self.update_status(msg, None, hubcaps::statuses::State::Failure)
+                }
+                EvalWorkerError::EvalError(eval::Error::FailWithPastebin(msg, title, content)) => {
+                    let pastebin = self.make_pastebin(chan, &title, content).map(|pp| pp.uri);
+                    self.update_status(msg, pastebin, hubcaps::statuses::State::Failure)
+                }
+                EvalWorkerError::EvalError(eval::Error::CommitStatusWrite(e)) => Err(e),
+                EvalWorkerError::CommitStatusWrite(e) => Err(e),
+            });
 
         match eval_result {
             Ok(eval_actions) => eval_actions,
@@ -236,7 +245,10 @@ impl<'a, E: stats::SysEvents + 'static> OneEval<'a, E> {
 
     // FIXME: remove with rust/cargo update
     #[allow(clippy::cognitive_complexity)]
-    fn evaluate_job(&mut self) -> Result<worker::Actions, EvalWorkerError> {
+    fn evaluate_job(
+        &mut self,
+        chan: &mut lapin::Channel,
+    ) -> Result<worker::Actions, EvalWorkerError> {
         let job = self.job;
         let repo = self
             .client_app
@@ -277,6 +289,7 @@ impl<'a, E: stats::SysEvents + 'static> OneEval<'a, E> {
 
         let mut evaluation_strategy: Box<dyn eval::EvaluationStrategy> = if job.is_nixpkgs() {
             Box::new(eval::NixpkgsStrategy::new(
+                chan.clone(),
                 job,
                 &pull,
                 &issue,
@@ -408,6 +421,7 @@ impl<'a, E: stats::SysEvents + 'static> OneEval<'a, E> {
                         state = hubcaps::statuses::State::Failure;
                         gist_url = self
                             .make_pastebin(
+                                chan,
                                 &format!("[{}] Evaluation of {}", prefix, check.name()),
                                 file_to_str(&mut out),
                             )

ofborg/src/tasks/evaluationfilter.rs

@@ -29,7 +29,11 @@ impl worker::SimpleWorker for EvaluationFilterWorker {
         }
     }
 
-    fn consumer(&mut self, job: &ghevent::PullRequestEvent) -> worker::Actions {
+    fn consumer(
+        &mut self,
+        _chan: &mut lapin::Channel,
+        job: &ghevent::PullRequestEvent,
+    ) -> worker::Actions {
         let span = debug_span!("job", pr = ?job.number);
         let _enter = span.enter();
 

ofborg/src/tasks/githubcommentfilter.rs

@@ -36,7 +36,11 @@ impl worker::SimpleWorker for GitHubCommentWorker {
 
     // FIXME: remove with rust/cargo update
     #[allow(clippy::cognitive_complexity)]
-    fn consumer(&mut self, job: &ghevent::IssueComment) -> worker::Actions {
+    fn consumer(
+        &mut self,
+        _chan: &mut lapin::Channel,
+        job: &ghevent::IssueComment,
+    ) -> worker::Actions {
         let span = debug_span!("job", pr = ?job.issue.number);
         let _enter = span.enter();
 

ofborg/src/tasks/githubcommentposter.rs

@@ -46,7 +46,7 @@ impl worker::SimpleWorker for GitHubCommentPoster {
         PostableEvent::from(body)
     }
 
-    fn consumer(&mut self, job: &PostableEvent) -> worker::Actions {
+    fn consumer(&mut self, _chan: &mut lapin::Channel, job: &PostableEvent) -> worker::Actions {
         let mut checks: Vec<CheckRunOptions> = vec![];
         let repo: Repo;
 

ofborg/src/tasks/log_message_collector.rs

@@ -210,7 +210,7 @@ impl worker::SimpleWorker for LogMessageCollector {
         })
     }
 
-    fn consumer(&mut self, job: &LogMessage) -> worker::Actions {
+    fn consumer(&mut self, _chan: &mut lapin::Channel, job: &LogMessage) -> worker::Actions {
         match job.message {
             MsgType::Start(ref start) => {
                 self.write_metadata(&job.from, start)

ofborg/src/tasks/pastebin_collector.rs

@@ -47,7 +47,7 @@ impl worker::SimpleWorker for PastebinCollector {
         }
     }
 
-    fn consumer(&mut self, job: &Self::J) -> worker::Actions {
+    fn consumer(&mut self, _chan: &mut lapin::Channel, job: &Self::J) -> worker::Actions {
         let span = debug_span!("pastebin", title = ?job.title);
         let _enter = span.enter();
 

ofborg/src/tasks/statscollector.rs

@@ -49,7 +49,11 @@ impl<E: stats::SysEvents + 'static> worker::SimpleWorker for StatCollectorWorker
         }
     }
 
-    fn consumer(&mut self, job: &stats::EventMessage) -> worker::Actions {
+    fn consumer(
+        &mut self,
+        _chan: &mut lapin::Channel,
+        job: &stats::EventMessage,
+    ) -> worker::Actions {
         let sender = job.sender.clone();
         for event in job.events.iter() {
             self.collector.record(sender.clone(), event.clone());

ofborg/src/utils/pastebin.rs

@@ -3,6 +3,9 @@
 use std::path::PathBuf;
 
 use base64::{prelude::BASE64_URL_SAFE_NO_PAD, Engine};
+use lapin::Channel;
+
+use crate::easyamqp::ChannelExt;
 
 #[derive(Serialize, Deserialize, Debug)]
 pub struct Pastebin {
@@ -31,14 +34,16 @@ impl From<&Pastebin> for PersistedPastebin {
     }
 }
 
-pub fn make_pastebin(title: &str, contents: String) -> Option<PersistedPastebin> {
+pub async fn make_pastebin(
+    chan: &mut Channel,
+    title: &str,
+    contents: String,
+) -> Result<PersistedPastebin, lapin::Error> {
     let pastebin = Pastebin {
         title: title.to_owned(),
         contents,
     };
 
-    // wait for a reply?
-    //async_std::task::block_on(publish_serde_action(pastebin));
-
-    None
+    chan.send_request(Some("pastebin-log"), None, &pastebin)
+        .await
 }

ofborg/src/worker.rs

@@ -24,6 +24,24 @@ pub struct QueueMsg {
     pub content: Vec<u8>,
 }
 
+pub fn prepare_queue_message<T: ?Sized>(
+    exchange: Option<&str>,
+    routing_key: Option<&str>,
+    msg: &T,
+) -> QueueMsg
+where
+    T: Serialize,
+{
+    QueueMsg {
+        exchange: exchange.map(|s| s.to_owned()),
+        routing_key: routing_key.map(|s| s.to_owned()),
+        mandatory: false,
+        immediate: false,
+        content_type: Some("application/json".to_owned()),
+        content: serde_json::to_string(&msg).unwrap().into_bytes(),
+    }
+}
+
 pub fn publish_serde_action<T: ?Sized>(
     exchange: Option<String>,
     routing_key: Option<String>,
@@ -32,20 +50,16 @@ pub fn publish_serde_action<T: ?Sized>(
 where
     T: Serialize,
 {
-    Action::Publish(Box::new(QueueMsg {
-        exchange,
-        routing_key,
-        mandatory: false,
-        immediate: false,
-        content_type: Some("application/json".to_owned()),
-        content: serde_json::to_string(&msg).unwrap().into_bytes(),
-    }))
+    Action::Publish(Box::new(prepare_queue_message(
+        exchange.as_deref(),
+        routing_key.as_deref(),
+        msg,
+    )))
 }
 
 pub trait SimpleWorker: Send {
     type J: Send;
-
-    fn consumer(&mut self, job: &Self::J) -> Actions;
+    fn consumer(&mut self, chan: &mut lapin::Channel, job: &Self::J) -> Actions;
 
     fn msg_to_job(
         &mut self,