From ddde1b23fc7f9a22ab535ea8b45a8d3e001f5a89 Mon Sep 17 00:00:00 2001
From: Phil <phil@estuary.dev>
Date: Tue, 8 Oct 2024 13:42:15 -0400
Subject: [PATCH] agent: setup rustls CryptoProvider

Fixes a crash in `agent` due to missing a `CryptoProvider` for `rustls`
TLS connections.
---
 Cargo.lock               | 1 +
 crates/agent/Cargo.toml  | 1 +
 crates/agent/src/main.rs | 6 ++++++
 3 files changed, 8 insertions(+)

diff --git a/Cargo.lock b/Cargo.lock
index 4c3ba7426e..d12a19badc 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -134,6 +134,7 @@ dependencies = [
  "regex",
  "reqwest",
  "runtime",
+ "rustls 0.23.10",
  "schemars",
  "serde",
  "serde_json",
diff --git a/crates/agent/Cargo.toml b/crates/agent/Cargo.toml
index 3776cd6ec8..dd7e7ec103 100644
--- a/crates/agent/Cargo.toml
+++ b/crates/agent/Cargo.toml
@@ -49,6 +49,7 @@ lazy_static = { workspace = true }
 rand = { workspace = true }
 regex = { workspace = true }
 reqwest = { workspace = true }
+rustls = { workspace = true }
 schemars = { workspace = true }
 serde = { workspace = true }
 serde_json = { workspace = true }
diff --git a/crates/agent/src/main.rs b/crates/agent/src/main.rs
index 874b5bb521..cfe59e4cff 100644
--- a/crates/agent/src/main.rs
+++ b/crates/agent/src/main.rs
@@ -51,6 +51,12 @@ struct Args {
 }
 
 fn main() -> Result<(), anyhow::Error> {
+    // Required in order for libraries to use `rustls` for TLS.
+    // See: https://docs.rs/rustls/latest/rustls/crypto/struct.CryptoProvider.html
+    rustls::crypto::aws_lc_rs::default_provider()
+        .install_default()
+        .expect("failed to install default crypto provider");
+
     // Use reasonable defaults for printing structured logs to stderr.
     let subscriber = tracing_subscriber::FmtSubscriber::builder()
         .with_env_filter(tracing_subscriber::EnvFilter::from_default_env())