Revert #2033

src/agent/onefuzz-telemetry/Cargo.toml

@@ -11,7 +11,11 @@ z3 = ["z3-sys"]
 intel_instructions = ["iced-x86"]
 
 [dependencies]
-appinsights = { version = "0.2.1", features = ["rustls", "blocking"], default-features = false }
+# appinsights-rs haas included optional support for rustls since 2020-10, but
+# not the feature has not been released yet.  This is the pinned to the most
+# recent git hash as of 2021-06-30.  Once released, this should be reverted to
+# use released versions
+appinsights = { git = "https://github.com/dmolokanov/appinsights-rs", rev = "0af6ec83bad1c050160f5258ab08e9834596ce20", features=["rustls"], default-features = false }
 log = "0.4"
 uuid = { version = "0.8", features = ["serde", "v4"] }
 serde = { version = "1.0", features = ["derive"] }

src/agent/onefuzz-telemetry/src/lib.rs

@@ -66,7 +66,7 @@ impl fmt::Display for InstanceTelemetryKey {
     }
 }
 
-pub type TelemetryClient = appinsights::blocking::TelemetryClient;
+pub type TelemetryClient = appinsights::TelemetryClient<appinsights::InMemoryChannel>;
 pub enum ClientType {
     Instance,
     Microsoft,
@@ -484,7 +484,7 @@ pub fn try_flush_and_close() {
     let clients = global::take_clients();
 
     for client in clients {
-        // close_channel performs an implicit flush
+        client.flush_channel();
         client.close_channel();
     }
 }