наблюдаемость: завершить базовый контур Community

Добавить структурированные журналы, метрики, трассировку и безопасный канал критических ошибок. Усилить границы рантайма, тесты, проверку зависимостей и сценарии развёртывания.

crates/crank-observability/tests/otlp.rs

@@ -0,0 +1,56 @@
+use std::time::Duration;
+
+use crank_observability::{OtlpBatchConfig, OtlpTraceConfig, OtlpTraceConfigError};
+
+#[test]
+fn absent_endpoint_disables_export_without_background_resources() {
+    let config = OtlpTraceConfig::try_new(
+        None,
+        None,
+        Duration::from_secs(10),
+        OtlpBatchConfig::default(),
+    )
+    .expect("missing endpoint must be valid");
+
+    assert!(!config.is_enabled());
+}
+
+#[test]
+fn explicit_config_accepts_only_bounded_http_protobuf() {
+    let config = OtlpTraceConfig::try_new(
+        Some("https://collector.example.test/v1/traces".to_owned()),
+        Some("http/protobuf".to_owned()),
+        Duration::from_secs(3),
+        OtlpBatchConfig::try_new(256, 64, Duration::from_millis(500), Duration::from_secs(3))
+            .unwrap(),
+    )
+    .expect("bounded HTTP protobuf config must be valid");
+
+    assert!(config.is_enabled());
+    assert_eq!(config.export_timeout(), Duration::from_secs(3));
+    assert_eq!(config.batch().max_queue_size(), 256);
+    assert_eq!(config.batch().max_export_batch_size(), 64);
+}
+
+#[test]
+fn invalid_values_return_safe_typed_errors() {
+    let secret_endpoint = "https://user:canary-secret@collector.example.test/v1/traces";
+    let error = OtlpTraceConfig::try_new(
+        Some(secret_endpoint.to_owned()),
+        Some("grpc".to_owned()),
+        Duration::ZERO,
+        OtlpBatchConfig::default(),
+    )
+    .expect_err("credentials in endpoint must be rejected");
+
+    assert!(matches!(
+        error,
+        OtlpTraceConfigError::InvalidEndpoint { .. }
+    ));
+    assert!(!error.to_string().contains(secret_endpoint));
+    assert!(!error.to_string().contains("canary-secret"));
+
+    let error = OtlpBatchConfig::try_new(8, 9, Duration::from_millis(1), Duration::from_secs(1))
+        .expect_err("batch cannot exceed queue");
+    assert!(matches!(error, OtlpTraceConfigError::InvalidBatchLimits));
+}