sigh guess i'm doing a connection pool

Cargo.lock

@@ -228,6 +228,20 @@ version = "1.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ccaeedb56da03b09f598226e25e80088cb4cd25f316e6e4df7d695f0feeb1403"
 
+[[package]]
+name = "crossbeam"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4ae5588f6b3c3cb05239e90bd110f257254aecd01e4635400391aeae07497845"
+dependencies = [
+ "cfg-if",
+ "crossbeam-channel",
+ "crossbeam-deque",
+ "crossbeam-epoch",
+ "crossbeam-queue",
+ "crossbeam-utils",
+]
+
 [[package]]
 name = "crossbeam-channel"
 version = "0.5.1"
@@ -238,6 +252,30 @@ dependencies = [
  "crossbeam-utils",
 ]
 
+[[package]]
+name = "crossbeam-deque"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6455c0ca19f0d2fbf751b908d5c55c1f5cbc65e03c4225427254b46890bdde1e"
+dependencies = [
+ "cfg-if",
+ "crossbeam-epoch",
+ "crossbeam-utils",
+]
+
+[[package]]
+name = "crossbeam-epoch"
+version = "0.9.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4ec02e091aa634e2c3ada4a392989e7c3116673ef0ac5b72232439094d73b7fd"
+dependencies = [
+ "cfg-if",
+ "crossbeam-utils",
+ "lazy_static",
+ "memoffset",
+ "scopeguard",
+]
+
 [[package]]
 name = "crossbeam-queue"
 version = "0.3.2"
@@ -880,6 +918,15 @@ version = "2.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "308cc39be01b73d0d18f82a0e7b2a3df85245f84af96fdddc5d202d27e47b86a"
 
+[[package]]
+name = "memoffset"
+version = "0.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "59accc507f1338036a0477ef61afdae33cde60840f4dfe481319ce3ad116ddf9"
+dependencies = [
+ "autocfg",
+]
+
 [[package]]
 name = "minimal-lexical"
 version = "0.1.4"
@@ -1048,6 +1095,7 @@ dependencies = [
  "bitflags",
  "bytes",
  "chrono",
+ "crossbeam",
  "derivative",
  "derive_builder",
  "format-bytes",

daemon/migrations/20211013053733_initial.up.sql

@@ -22,4 +22,5 @@ CREATE TABLE "messages" (
     "bcc" JSON,
     "in_reply_to" TEXT,
     "message_id" TEXT,
+    "mbox" BLOB
 );

daemon/src/lib.rs

@@ -12,6 +12,8 @@ extern crate derivative;
 pub mod config;
 pub mod mail;
 
+use std::path::PathBuf;
+
 use anyhow::{Context, Result};
 use clap::Parser;
 use futures::future::FutureExt;
@@ -30,15 +32,15 @@ type ExitListener = oneshot::Receiver<()>;
 /// panorama components over Unix sockets.
 #[derive(Debug, Parser)]
 struct Options {
-  // /// Config file path (defaults to XDG)
-  // #[clap(long = "config", short = 'c')]
-  // config_file: Option<PathBuf>,
+  /// Config file path (defaults to XDG)
+  #[clap(long = "config", short = 'c')]
+  config_file: Option<PathBuf>,
+
   /// Verbose mode (-v, -vv, -vvv, etc)
   #[clap(short = 'v', long = "verbose", parse(from_occurrences))]
   verbose: usize,
 }
 
-#[tokio::main]
 pub async fn run() -> Result<()> {
   let opt = Options::parse();
 

daemon/src/mail/store.rs

@@ -10,13 +10,13 @@ pub struct MailStore {
 impl MailStore {
   /// Creates a new store tied to a SQLite database.
   pub async fn open(uri: impl AsRef<str>) -> Result<Self> {
-    let pool = SqlitePoolOptions::new().connect(uri.as_ref()).await?;
+    let uri = uri.as_ref();
+    let pool = SqlitePoolOptions::new().connect(uri).await?;
 
     // run migrations, if available
-    MIGRATOR
-      .run(&pool)
-      .await
-      .context("could not run migrations on the pool")?;
+    MIGRATOR.run(&pool).await.with_context(|| {
+      format!("could not run migrations on the pool at {}", uri)
+    })?;
 
     Ok(MailStore { pool })
   }

daemon/src/main.rs

@@ -1,4 +1,4 @@
 use anyhow::Result;
 
 #[tokio::main]
-async fn main() -> Result<()> { panorama_daemon::run() }
+async fn main() -> Result<()> { panorama_daemon::run().await }

imap/Cargo.toml

@@ -13,8 +13,9 @@ readme = "README.md"
 workspace = ".."
 
 [features]
-default = ["rfc2177", "rfc6154"]
+default = ["pool", "rfc2177", "rfc6154"]
 low-level = []
+pool = ["crossbeam"]
 rfc2087 = [] # quota
 rfc2177 = [] # idle
 rfc4315 = [] # uidplus
@@ -40,6 +41,8 @@ tokio-util = { version = "0.6.8", features = ["codec"] }
 webpki-roots = "0.22.1"
 panorama-proto-common = { path = "../proto-common" }
 
+crossbeam = { version = "0.8.1", optional = true }
+
 # for fuzzing
 arbitrary = { version = "1.0.2", optional = true, features = ["derive"] }
 

imap/src/client/mod.rs

@@ -21,12 +21,14 @@ pub mod response_stream;
 mod client;
 mod codec;
 mod inner;
+mod pool;
 mod tls;
 
 pub use self::client::{
   ClientAuthenticated, ClientUnauthenticated, Config, ConfigBuilder,
 };
 pub use self::codec::{ImapCodec, TaggedCommand};
+pub use self::pool::ImapPool;
 
 #[cfg(feature = "low-level")]
 pub use self::inner::Inner;

imap/src/client/pool.rs

@@ -0,0 +1,27 @@
+use std::sync::Arc;
+
+use crossbeam::queue::ArrayQueue;
+
+use super::{ClientAuthenticated, Config};
+
+#[derive(Clone)]
+pub struct ImapPool(Arc<InnerPool>);
+
+impl ImapPool {
+  pub fn new(config: Config) -> Self {
+    let inner = InnerPool {
+      config,
+      connections: ArrayQueue::new(10),
+    };
+    ImapPool(Arc::new(inner))
+  }
+}
+
+struct InnerPool {
+  config: Config,
+  connections: ArrayQueue<ClientAuthenticated>,
+}
+
+impl InnerPool {
+  pub fn connect() {}
+}