open-telemetry: handle services without service.namespace

stackpacks/open-telemetry/settings/component-mappings/namespaces.sty

@@ -9,7 +9,9 @@ nodes:
         - "METRICS"
       resource:
         action: "'CREATE'"
-        condition: "'service.namespace' in resource.attributes"
+        # OTel: service.namespace is optional; an unset or empty namespace is not a named namespace,
+        # so no namespace component is created for it: https://opentelemetry.io/docs/specs/semconv/registry/attributes/service/
+        condition: "'service.namespace' in resource.attributes && resource.attributes['service.namespace'] != ''"
     vars:
       - name: "namespace"
         value: "resource.attributes['service.namespace']"

stackpacks/open-telemetry/settings/component-mappings/service-instances.sty

@@ -11,8 +11,13 @@ nodes:
         action: "'CREATE'"
         condition: "'service.instance.id' in resource.attributes"
     vars:
+      # OTel: service.namespace is optional and an unset namespace is itself a valid namespace, encoded here as the empty string.
+      # service.instance.id is unique only within its (service.namespace, service.name) pair: https://opentelemetry.io/docs/specs/semconv/registry/attributes/service/
       - name: "namespace"
-        value: "resource.attributes['service.namespace']"
+        value: >-
+          'service.namespace' in resource.attributes ?
+          resource.attributes['service.namespace'] :
+          ''
       - name: "service"
         value: "resource.attributes['service.name']"
       - name: "version"

stackpacks/open-telemetry/settings/component-mappings/services.sty

@@ -11,11 +11,13 @@ nodes:
         action: "'CREATE'"
         condition: "'service.name' in resource.attributes"
     vars:
+      # OTel: service.namespace is optional and an unset namespace is itself a valid namespace, encoded here as the empty string.
+      # service.instance.id is unique only within its (service.namespace, service.name) pair: https://opentelemetry.io/docs/specs/semconv/registry/attributes/service/
       - name: "namespace"
         value: >-
-          resource.attributes['service.namespace'] != '' ?
+          'service.namespace' in resource.attributes ?
           resource.attributes['service.namespace'] :
-          'default'
+          ''
       - name: "service"
         value: "resource.attributes['service.name']"
       - name: "version"

stackpacks/open-telemetry/settings/monitors/service-instance-span-duration/monitor.sty

@@ -6,14 +6,18 @@ nodes:
       metric:
         # _seconds_ = telemetry gateway (target/new spanmetrics default); _milliseconds_ = standalone collector (current spanmetrics default, transitioning to s per OTel semantic conventions)
         query: |-
-          (histogram_quantile(0.95, sum by(service_namespace, service_name, service_instance_id, le)(rate(otel_span_duration_seconds_bucket{span_kind=~"SPAN_KIND_SERVER|SPAN_KIND_CONSUMER"}[5m]))))
-          or
-          (histogram_quantile(0.95, sum by(service_namespace, service_name, service_instance_id, le)(rate(otel_span_duration_milliseconds_bucket{span_kind=~"SPAN_KIND_SERVER|SPAN_KIND_CONSUMER"}[5m]))) / 1000)
+          label_replace(
+            (histogram_quantile(0.95, sum by(service_namespace, service_name, service_instance_id, le)(rate(otel_span_duration_seconds_bucket{span_kind=~"SPAN_KIND_SERVER|SPAN_KIND_CONSUMER"}[5m]))))
+            or
+            (histogram_quantile(0.95, sum by(service_namespace, service_name, service_instance_id, le)(rate(otel_span_duration_milliseconds_bucket{span_kind=~"SPAN_KIND_SERVER|SPAN_KIND_CONSUMER"}[5m]))) / 1000)
+          , "service_urn_prefix", "urn:opentelemetry:namespace/$1:service/", "service_namespace", "(.*)")
         aliasTemplate: Span duration 95th percentile
         unit: s
       threshold: 5
       titleTemplate: Span duration
-      urnTemplate: "urn:opentelemetry:namespace/${service_namespace}:service/${service_name}:serviceInstance/${service_instance_id}"
+      # OTel: service.namespace is optional and an unset namespace is itself a valid namespace, encoded here as the empty string.
+      # service.instance.id is unique only within its (service.namespace, service.name) pair: https://opentelemetry.io/docs/specs/semconv/registry/attributes/service/
+      urnTemplate: "${service_urn_prefix}${service_name}:serviceInstance/${service_instance_id}"
     description: |
       Monitors the duration of the server and consumer spans. When the 95th percentile of the duration is greater than the threshold (default 5s) the monitor has a Deviating state.
     function: urn:stackpack:common:monitor-function:threshold

stackpacks/open-telemetry/settings/monitors/service-instance-span-error-ratio/monitor.sty

@@ -4,12 +4,17 @@ nodes:
       comparator: GT
       failureState: DEVIATING
       metric:
-        query: 'sum by(service_namespace, service_name, service_instance_id)(rate(otel_span_calls_total{status_code="STATUS_CODE_ERROR", span_kind=~"SPAN_KIND_SERVER|SPAN_KIND_CONSUMER"}[5m]) or (present_over_time(otel_span_calls_total{span_kind=~"SPAN_KIND_SERVER|SPAN_KIND_CONSUMER"}[5m]) -1)) / sum by(service_namespace, service_name, service_instance_id)(rate(otel_span_calls_total{span_kind=~"SPAN_KIND_SERVER|SPAN_KIND_CONSUMER"}[5m])) * 100'
+        query: |-
+          label_replace(
+            sum by(service_namespace, service_name, service_instance_id)(rate(otel_span_calls_total{status_code="STATUS_CODE_ERROR", span_kind=~"SPAN_KIND_SERVER|SPAN_KIND_CONSUMER"}[5m]) or (present_over_time(otel_span_calls_total{span_kind=~"SPAN_KIND_SERVER|SPAN_KIND_CONSUMER"}[5m]) -1)) / sum by(service_namespace, service_name, service_instance_id)(rate(otel_span_calls_total{span_kind=~"SPAN_KIND_SERVER|SPAN_KIND_CONSUMER"}[5m])) * 100
+          , "service_urn_prefix", "urn:opentelemetry:namespace/$1:service/", "service_namespace", "(.*)")
         aliasTemplate: Error ratio (errors/total)
         unit: percent
       threshold: 5
       titleTemplate: Span error ratio
-      urnTemplate: "urn:opentelemetry:namespace/${service_namespace}:service/${service_name}:serviceInstance/${service_instance_id}"
+      # OTel: service.namespace is optional and an unset namespace is itself a valid namespace, encoded here as the empty string.
+      # service.instance.id is unique only within its (service.namespace, service.name) pair: https://opentelemetry.io/docs/specs/semconv/registry/attributes/service/
+      urnTemplate: "${service_urn_prefix}${service_name}:serviceInstance/${service_instance_id}"
     description: |
       Percentage of server and consumer spans that are in an error state for the service instance.
     function: urn:stackpack:common:monitor-function:threshold

stackpacks/open-telemetry/settings/monitors/service-span-duration/monitor.sty

@@ -6,14 +6,18 @@ nodes:
       metric:
         # _seconds_ = telemetry gateway (target/new spanmetrics default); _milliseconds_ = standalone collector (current spanmetrics default, transitioning to s per OTel semantic conventions)
         query: |-
-          (histogram_quantile(0.95, sum by(service_namespace, service_name, le)(rate(otel_span_duration_seconds_bucket{span_kind=~"SPAN_KIND_SERVER|SPAN_KIND_CONSUMER"}[5m]))))
-          or
-          (histogram_quantile(0.95, sum by(service_namespace, service_name, le)(rate(otel_span_duration_milliseconds_bucket{span_kind=~"SPAN_KIND_SERVER|SPAN_KIND_CONSUMER"}[5m]))) / 1000)
+          label_replace(
+            (histogram_quantile(0.95, sum by(service_namespace, service_name, le)(rate(otel_span_duration_seconds_bucket{span_kind=~"SPAN_KIND_SERVER|SPAN_KIND_CONSUMER"}[5m]))))
+            or
+            (histogram_quantile(0.95, sum by(service_namespace, service_name, le)(rate(otel_span_duration_milliseconds_bucket{span_kind=~"SPAN_KIND_SERVER|SPAN_KIND_CONSUMER"}[5m]))) / 1000)
+          , "service_urn_prefix", "urn:opentelemetry:namespace/$1:service/", "service_namespace", "(.*)")
         aliasTemplate: Span duration 95th percentile
         unit: s
       threshold: 5
       titleTemplate: Span duration
-      urnTemplate: "urn:opentelemetry:namespace/${service_namespace}:service/${service_name}"
+      # OTel: service.namespace is optional and an unset namespace is itself a valid namespace, encoded here as the empty string.
+      # service.instance.id is unique only within its (service.namespace, service.name) pair: https://opentelemetry.io/docs/specs/semconv/registry/attributes/service/
+      urnTemplate: "${service_urn_prefix}${service_name}"
     description: |
       Monitors the duration of the server and consumer spans. When the 95th percentile of the duration is greater than the threshold (default 5s) the monitor has a Deviating state.
     function: urn:stackpack:common:monitor-function:threshold

stackpacks/open-telemetry/settings/monitors/service-span-error-ratio/monitor.sty

@@ -4,12 +4,17 @@ nodes:
       comparator: GT
       failureState: DEVIATING
       metric:
-        query: 'sum by(service_namespace, service_name)(rate(otel_span_calls_total{status_code="STATUS_CODE_ERROR", span_kind=~"SPAN_KIND_SERVER|SPAN_KIND_CONSUMER"}[5m]) or (present_over_time(otel_span_calls_total{span_kind=~"SPAN_KIND_SERVER|SPAN_KIND_CONSUMER"}[5m]) -1)) / sum by(service_namespace, service_name)(rate(otel_span_calls_total{span_kind=~"SPAN_KIND_SERVER|SPAN_KIND_CONSUMER"}[5m])) * 100'
+        query: |-
+          label_replace(
+            sum by(service_namespace, service_name)(rate(otel_span_calls_total{status_code="STATUS_CODE_ERROR", span_kind=~"SPAN_KIND_SERVER|SPAN_KIND_CONSUMER"}[5m]) or (present_over_time(otel_span_calls_total{span_kind=~"SPAN_KIND_SERVER|SPAN_KIND_CONSUMER"}[5m]) -1)) / sum by(service_namespace, service_name)(rate(otel_span_calls_total{span_kind=~"SPAN_KIND_SERVER|SPAN_KIND_CONSUMER"}[5m])) * 100
+          , "service_urn_prefix", "urn:opentelemetry:namespace/$1:service/", "service_namespace", "(.*)")
         aliasTemplate: Error ratio (errors/total)
         unit: percent
       threshold: 5
       titleTemplate: Span error ratio
-      urnTemplate: "urn:opentelemetry:namespace/${service_namespace}:service/${service_name}"
+      # OTel: service.namespace is optional and an unset namespace is itself a valid namespace, encoded here as the empty string.
+      # service.instance.id is unique only within its (service.namespace, service.name) pair: https://opentelemetry.io/docs/specs/semconv/registry/attributes/service/
+      urnTemplate: "${service_urn_prefix}${service_name}"
     description: |
       Percentage of server and consumer spans that are in an error state for the service.
     function: urn:stackpack:common:monitor-function:threshold

stackpacks/open-telemetry/settings/relation-mappings/asynchronous-consumer-peer.sty

@@ -16,20 +16,20 @@ nodes:
               condition: >-
                 'client' in datapoint.attributes &&
                 'server' in datapoint.attributes &&
-                'client_service.namespace' in datapoint.attributes &&
-                'server_service.namespace' in datapoint.attributes &&
                 'connection_type' in datapoint.attributes &&
                 datapoint.attributes['connection_type'] == 'messaging_system' &&
                 'client_peer.service' in datapoint.attributes
     vars:
+      # OTel: service.namespace is optional and an unset namespace is itself a valid namespace, encoded here as the empty string.
+      # service.instance.id is unique only within its (service.namespace, service.name) pair: https://opentelemetry.io/docs/specs/semconv/registry/attributes/service/
       - name: "sourceId"
         value: >-
           'server_service.instance.id' in datapoint.attributes ?
-          "urn:opentelemetry:namespace/" + datapoint.attributes['server_service.namespace'] + ":service/" + datapoint.attributes['server'] + ":serviceInstance/" + datapoint.attributes['server_service.instance.id'] :
-          "urn:opentelemetry:namespace/" + datapoint.attributes['server_service.namespace'] + ":service/" + datapoint.attributes['server'] + ":serviceInstance/" + datapoint.attributes['server']
+          "urn:opentelemetry:namespace/" + ('server_service.namespace' in datapoint.attributes ? datapoint.attributes['server_service.namespace'] : '') + ":service/" + datapoint.attributes['server'] + ":serviceInstance/" + datapoint.attributes['server_service.instance.id'] :
+          "urn:opentelemetry:namespace/" + ('server_service.namespace' in datapoint.attributes ? datapoint.attributes['server_service.namespace'] : '') + ":service/" + datapoint.attributes['server'] + ":serviceInstance/" + datapoint.attributes['server']
       - name: "targetId"
         value: >-
-          'urn:opentelemetry:namespace/' + datapoint.attributes['client_service.namespace'] + ':service/' + datapoint.attributes['client_peer.service']
+          'urn:opentelemetry:namespace/' + ('client_service.namespace' in datapoint.attributes ? datapoint.attributes['client_service.namespace'] : '') + ':service/' + datapoint.attributes['client_peer.service']
     output:
       sourceId: "vars.sourceId"
       targetId: "vars.targetId"

stackpacks/open-telemetry/settings/relation-mappings/asynchronous-producer-consumer.sty

@@ -16,22 +16,22 @@ nodes:
               condition: >-
                 'client' in datapoint.attributes &&
                 'server' in datapoint.attributes &&
-                'client_service.namespace' in datapoint.attributes &&
-                'server_service.namespace' in datapoint.attributes &&
                 'connection_type' in datapoint.attributes &&
                 datapoint.attributes['connection_type'] == 'messaging_system' &&
                 !('client_peer.service' in datapoint.attributes)
     vars:
+      # OTel: service.namespace is optional and an unset namespace is itself a valid namespace, encoded here as the empty string.
+      # service.instance.id is unique only within its (service.namespace, service.name) pair: https://opentelemetry.io/docs/specs/semconv/registry/attributes/service/
       - name: "sourceId"
         value: >-
           'client_service.instance.id' in datapoint.attributes ?
-          "urn:opentelemetry:namespace/" + datapoint.attributes['client_service.namespace'] + ":service/" + datapoint.attributes['client'] + ":serviceInstance/" + datapoint.attributes['client_service.instance.id'] :
-          "urn:opentelemetry:namespace/" + datapoint.attributes['client_service.namespace'] + ":service/" + datapoint.attributes['client'] + ":serviceInstance/" + datapoint.attributes['client']
+          "urn:opentelemetry:namespace/" + ('client_service.namespace' in datapoint.attributes ? datapoint.attributes['client_service.namespace'] : '') + ":service/" + datapoint.attributes['client'] + ":serviceInstance/" + datapoint.attributes['client_service.instance.id'] :
+          "urn:opentelemetry:namespace/" + ('client_service.namespace' in datapoint.attributes ? datapoint.attributes['client_service.namespace'] : '') + ":service/" + datapoint.attributes['client'] + ":serviceInstance/" + datapoint.attributes['client']
       - name: "targetId"
         value: >-
           'server_service.instance.id' in datapoint.attributes ?
-          "urn:opentelemetry:namespace/" + datapoint.attributes['server_service.namespace'] + ":service/" + datapoint.attributes['server'] + ":serviceInstance/" + datapoint.attributes['server_service.instance.id'] :
-          "urn:opentelemetry:namespace/" + datapoint.attributes['server_service.namespace'] + ":service/" + datapoint.attributes['server'] + ":serviceInstance/" + datapoint.attributes['server']
+          "urn:opentelemetry:namespace/" + ('server_service.namespace' in datapoint.attributes ? datapoint.attributes['server_service.namespace'] : '') + ":service/" + datapoint.attributes['server'] + ":serviceInstance/" + datapoint.attributes['server_service.instance.id'] :
+          "urn:opentelemetry:namespace/" + ('server_service.namespace' in datapoint.attributes ? datapoint.attributes['server_service.namespace'] : '') + ":service/" + datapoint.attributes['server'] + ":serviceInstance/" + datapoint.attributes['server']
     output:
       sourceId: "vars.sourceId"
       targetId: "vars.targetId"

stackpacks/open-telemetry/settings/relation-mappings/asynchronous-producer-peer.sty

@@ -16,19 +16,20 @@ nodes:
               condition: >-
                 'client' in datapoint.attributes &&
                 'server' in datapoint.attributes &&
-                'client_service.namespace' in datapoint.attributes &&
                 'connection_type' in datapoint.attributes &&
                 datapoint.attributes['connection_type'] == 'messaging_system' &&
                 'client_peer.service' in datapoint.attributes
     vars:
+      # OTel: service.namespace is optional and an unset namespace is itself a valid namespace, encoded here as the empty string.
+      # service.instance.id is unique only within its (service.namespace, service.name) pair: https://opentelemetry.io/docs/specs/semconv/registry/attributes/service/
       - name: "sourceId"
         value: >-
           'client_service.instance.id' in datapoint.attributes ?
-          "urn:opentelemetry:namespace/" + datapoint.attributes['client_service.namespace'] + ":service/" + datapoint.attributes['client'] + ":serviceInstance/" + datapoint.attributes['client_service.instance.id'] :
-          "urn:opentelemetry:namespace/" + datapoint.attributes['client_service.namespace'] + ":service/" + datapoint.attributes['client'] + ":serviceInstance/" + datapoint.attributes['client']
+          "urn:opentelemetry:namespace/" + ('client_service.namespace' in datapoint.attributes ? datapoint.attributes['client_service.namespace'] : '') + ":service/" + datapoint.attributes['client'] + ":serviceInstance/" + datapoint.attributes['client_service.instance.id'] :
+          "urn:opentelemetry:namespace/" + ('client_service.namespace' in datapoint.attributes ? datapoint.attributes['client_service.namespace'] : '') + ":service/" + datapoint.attributes['client'] + ":serviceInstance/" + datapoint.attributes['client']
       - name: "targetId"
         value: >-
-          'urn:opentelemetry:namespace/' + datapoint.attributes['client_service.namespace'] + ':service/' + datapoint.attributes['client_peer.service']
+          'urn:opentelemetry:namespace/' + ('client_service.namespace' in datapoint.attributes ? datapoint.attributes['client_service.namespace'] : '') + ':service/' + datapoint.attributes['client_peer.service']
     output:
       sourceId: "vars.sourceId"
       targetId: "vars.targetId"

stackpacks/open-telemetry/settings/relation-mappings/executes-ecs-task.sty

@@ -13,12 +13,13 @@ nodes:
     vars:
       - name: "awsEcsTaskId"
         value: "resource.attributes['aws.ecs.task.id']"
+      # OTel: service.namespace is optional and an unset namespace is itself a valid namespace, encoded here as the empty string.
+      # service.instance.id is unique only within its (service.namespace, service.name) pair: https://opentelemetry.io/docs/specs/semconv/registry/attributes/service/
       - name: "namespace"
         value: >-
-          'service.namespace' in resource.attributes &&
-          resource.attributes['service.namespace'] != '' ?
+          'service.namespace' in resource.attributes ?
           resource.attributes['service.namespace'] :
-          'default'
+          ''
       - name: "service"
         value: "resource.attributes['service.name']"
       - name: "instanceId"

stackpacks/open-telemetry/settings/relation-mappings/executes-function.sty

@@ -13,12 +13,13 @@ nodes:
     vars:
       - name: "faasId"
         value: "resource.attributes['faas.id']"
+      # OTel: service.namespace is optional and an unset namespace is itself a valid namespace, encoded here as the empty string.
+      # service.instance.id is unique only within its (service.namespace, service.name) pair: https://opentelemetry.io/docs/specs/semconv/registry/attributes/service/
       - name: "namespace"
         value: >-
-          'service.namespace' in resource.attributes &&
-          resource.attributes['service.namespace'] != '' ?
+          'service.namespace' in resource.attributes ?
           resource.attributes['service.namespace'] :
-          'default'
+          ''
       - name: "service"
         value: "resource.attributes['service.name']"
       - name: "instanceId"

stackpacks/open-telemetry/settings/relation-mappings/executes-host.sty

@@ -13,12 +13,13 @@ nodes:
     vars:
       - name: "hostId"
         value: "resource.attributes['host.id']"
+      # OTel: service.namespace is optional and an unset namespace is itself a valid namespace, encoded here as the empty string.
+      # service.instance.id is unique only within its (service.namespace, service.name) pair: https://opentelemetry.io/docs/specs/semconv/registry/attributes/service/
       - name: "namespace"
         value: >-
-          'service.namespace' in resource.attributes &&
-          resource.attributes['service.namespace'] != '' ?
+          'service.namespace' in resource.attributes ?
           resource.attributes['service.namespace'] :
-          'default'
+          ''
       - name: "service"
         value: "resource.attributes['service.name']"
       - name: "instanceId"