Restore agent/tenant IDs and response text in exporter log messages

Agent IDs and tenant IDs are not sensitive data and are useful for
debugging. Restore them in debug/error log messages. Also restore
truncated response text in HTTP error logs to help developers debug
failures.

Log levels remain at DEBUG (from the prior security fix).

Co-authored-by: nikhilNava <211831449+nikhilNava@users.noreply.github.com>

Author: Copilot

libraries/microsoft-agents-a365-observability-core/microsoft_agents_a365/observability/core/exporters/agent365_exporter.py

@@ -115,12 +115,15 @@ def export(self, spans: Sequence[ReadableSpan]) -> SpanExportResult:
                                 "This may expose credentials in transit."
                             )
                         headers["authorization"] = f"Bearer {token}"
-                        logger.debug("Token resolved successfully.")
+                        logger.debug(f"Token resolved successfully for agent {agent_id}")
                     else:
-                        logger.debug("No token returned by resolver.")
+                        logger.debug(f"No token returned for agent {agent_id}")
                 except Exception as e:
                     # If token resolution fails, treat as failure for this group
-                    logger.error(f"Token resolution failed: {type(e).__name__}")
+                    logger.error(
+                        f"Token resolution failed for agent {agent_id}, "
+                        f"tenant {tenant_id}: {type(e).__name__}"
+                    )
                     any_failure = True
                     continue
 
@@ -195,10 +198,14 @@ def _post_with_retries(self, url: str, body: str, headers: dict[str, str]) -> bo
                 if 200 <= resp.status_code < 300:
                     logger.debug(
                         f"HTTP {resp.status_code} success on attempt {attempt + 1}. "
-                        f"Correlation ID: {correlation_id}."
+                        f"Correlation ID: {correlation_id}. "
+                        f"Response: {self._truncate_text(resp.text, 200)}"
                     )
                     return True
 
+                # Log non-success responses
+                response_text = self._truncate_text(resp.text, 500)
+
                 # Retry transient
                 if resp.status_code in (408, 429) or 500 <= resp.status_code < 600:
                     # Respect Retry-After header for 429 responses
@@ -214,13 +221,15 @@ def _post_with_retries(self, url: str, body: str, headers: dict[str, str]) -> bo
                     logger.error(
                         f"HTTP {resp.status_code} final failure after "
                         f"{DEFAULT_MAX_RETRIES + 1} attempts. "
-                        f"Correlation ID: {correlation_id}."
+                        f"Correlation ID: {correlation_id}. "
+                        f"Response: {response_text}"
                     )
                 else:
                     # Non-retryable error
                     logger.error(
                         f"HTTP {resp.status_code} non-retryable error. "
-                        f"Correlation ID: {correlation_id}."
+                        f"Correlation ID: {correlation_id}. "
+                        f"Response: {response_text}"
                     )
                 return False
 

tests/observability/core/test_agent365_exporter.py

@@ -322,10 +322,13 @@ def test_export_logging(self, mock_logger):
                     "(tenant: test-tenant-123, agent: test-agent-456)"
                 ),
                 # Should log token resolution success at DEBUG
-                unittest.mock.call.debug("Token resolved successfully."),
+                unittest.mock.call.debug(
+                    "Token resolved successfully for agent test-agent-456"
+                ),
                 # Should log HTTP success at DEBUG
                 unittest.mock.call.debug(
-                    "HTTP 200 success on attempt 1. Correlation ID: test-correlation-123."
+                    "HTTP 200 success on attempt 1. "
+                    "Correlation ID: test-correlation-123. Response: success"
                 ),
             ]