Closes #746 - Added extension point for globally adding trace attributes

inspectit-ocelot-config/src/main/resources/rocks/inspectit/ocelot/config/default/instrumentation/rules/_shared/tracing.yml

@@ -0,0 +1,24 @@
+inspectit:
+  instrumentation:
+    rules:
+
+      # This rule should be included by all other tracing rules.
+      # It allows to specify data which is added to all spans as attributes, e.g. a business transaction
+      'r_tracing_global_attributes':
+        enabled: true #default setting, but ensures that the rule exists.
+
+      # This rule can be extended to tag the stack-trace if required
+      'r_tracing_exception_attributes':
+        'tracing':
+          attributes:
+            'java.exception': _thrown
+
+      # This rule adds the fully qualified name of the method as span attribute
+      'r_tracing_fqn_attribute':
+        'tracing':
+          attributes:
+            'java.fqn': 'method_fqn'
+        entry:
+          'method_fqn':
+            action: 'a_method_getFQN'
+

inspectit-ocelot-config/src/main/resources/rocks/inspectit/ocelot/config/default/instrumentation/rules/db/jdbc/tracing.yml

@@ -38,14 +38,15 @@ inspectit:
         include:
           'r_jdbc_detect_entry': true
           'r_jdbc_extract_url': true
+          'r_tracing_global_attributes': true
+          'r_tracing_exception_attributes': true
         tracing:
           start-span: true
           start-span-conditions:
             only-if-true: 'jdbc_is_entry'
           attributes:
             'db.type': 'db_type_sql'
             'db.url': 'jdbc_url'
-            'java.exception': _thrown
           error-status: _thrown
         entry:
           'db_type_sql':

inspectit-ocelot-config/src/main/resources/rocks/inspectit/ocelot/config/default/instrumentation/rules/http/_shared/http-tracing.yml

@@ -31,6 +31,8 @@ inspectit:
 
       # This rule is included by all HTTP Client AND Server tracing rules to define which attributes should be added to the span
       'r_http_tracing_default_attributes':
+        include:
+          'r_tracing_global_attributes': true
         tracing:
           attributes:
             'http.status_code': 'http_status'

inspectit-ocelot-config/src/main/resources/rocks/inspectit/ocelot/config/default/instrumentation/rules/method-tracing.yml

@@ -7,13 +7,11 @@ inspectit:
       #
       # This rule can be either included or scopes can be directly added to it
       'r_trace_method':
-        'tracing':
+        include:
+          'r_tracing_global_attributes': true
+          'r_tracing_exception_attributes': true
+          'r_tracing_fqn_attribute': true
+        tracing:
           start-span: true
           error-status: _thrown
-          attributes:
-            'java.exception': _thrown
-            'java.fqn': 'method_fqn'
-        entry:
-          'method_fqn':
-            action: 'a_method_getFQN'