jaeger: introduce process tags' option for tracer

Closes-bug: 2006611
Signed-off-by: Sahid Orentino Ferdjaoui <sahid.ferdjaoui@industrialdiscipline.com>
Change-Id: I938b52d7785d421015b888c9d70a5b0bf032772f

osprofiler/drivers/jaeger.py

@@ -49,7 +49,8 @@ class Jaeger(base.Driver):
             "local_agent": {
                 "reporting_host": parsed_url.hostname,
                 "reporting_port": parsed_url.port,
-            }
+            },
+            "tags": conf.profiler_jaeger.process_tags
         }
 
         # Initialize tracer for each profiler

osprofiler/opts.py

@@ -180,8 +180,16 @@ _service_name_prefix = cfg.StrOpt(
 Set service name prefix to Jaeger service name.
 """)
 
+_process_tags = cfg.DictOpt(
+    "process_tags",
+    default={},
+    help="""
+Set process tracer tags.
+""")
+
 _JAEGER_OPTS = [
-    _service_name_prefix
+    _service_name_prefix,
+    _process_tags
 ]
 
 cfg.CONF.register_opts(_JAEGER_OPTS, group=_jaegerprofiler_opt_group)

osprofiler/tests/unit/drivers/test_jaeger.py

@@ -30,6 +30,8 @@ class JaegerTestCase(test.TestCase):
         super(JaegerTestCase, self).setUp()
 
         opts.set_defaults(cfg.CONF)
+        cfg.CONF.set_default(
+            "process_tags", "k1:v1,k2:v2", "profiler_jaeger")
 
         self.payload_start = {
             "name": "api-start",
@@ -60,7 +62,8 @@ class JaegerTestCase(test.TestCase):
         # see: jaeger_client/config.py#L374
         Config._initialized = False
         self.driver = jaeger.Jaeger("jaeger://127.0.0.1:6831",
-                                    project="nova", service="api")
+                                    project="nova", service="api",
+                                    conf=cfg.CONF)
 
     @mock.patch("osprofiler._utils.shorten_id")
     def test_notify_start(self, mock_shorten_id):
@@ -97,3 +100,11 @@ class JaegerTestCase(test.TestCase):
             "service_name_prefix", "prx1", "profiler_jaeger")
         self.assertEqual("prx1-pr1-svc1", self.driver._get_service_name(
             cfg.CONF, "pr1", "svc1"))
+
+    def test_process_tags(self):
+        tags = self.driver.tracer.tags
+        # Let's remove variable tags generated by Jaeger client
+        del tags['hostname']
+        del tags['jaeger.version']
+        del tags['ip']
+        self.assertEqual({'k1': 'v1', 'k2': 'v2'}, tags)

releasenotes/notes/jaeger-add-process-tags-79d5f5d7a0b049ef.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    Add ability to set tracer process tags to Jaeger via a
+    configuration option introduced, `profiler_jaeger/process_tags`.