Enable HTTP debugging for AWS client requests

Signed-off-by: Ryan Underwood <ryan.underwood@mongodb.com>

Author: runderwo

include/fluent-bit/flb_aws_util.h

@@ -102,6 +102,9 @@ struct flb_aws_client {
 
     /* Send all log messages as debug; used in AWS Cred Providers on init */
     int debug_only;
+
+    /* Callbacks context */
+    struct flb_callback *callback;
 };
 
 /* frees dynamic_headers */

src/aws/flb_aws_util.c

@@ -268,6 +268,11 @@ struct flb_aws_client *flb_aws_client_create()
     client->client_vtable = &client_vtable;
     client->retry_requests = FLB_FALSE;
     client->debug_only = FLB_FALSE;
+    client->callback = flb_callback_create("aws client");  // FIXME: what name?
+    if (!client->callback) {
+        flb_errno();
+        return NULL;
+    }
     return client;
 }
 
@@ -291,6 +296,7 @@ void flb_aws_client_destroy(struct flb_aws_client *aws_client)
         if (aws_client->extra_user_agent) {
             flb_sds_destroy(aws_client->extra_user_agent);
         }
+        flb_free(aws_client->callback);
         flb_free(aws_client);
     }
 }
@@ -386,6 +392,8 @@ struct flb_http_client *request_do(struct flb_aws_client *aws_client,
         goto error;
     }
 
+    c->cb_ctx = aws_client->callback;
+
     /* Increase the maximum HTTP response buffer size to fit large responses from AWS services */
     ret = flb_http_buffer_size(c, FLB_MAX_AWS_RESP_BUFFER_SIZE);
     if (ret != 0) {