Fix callbacks in system metrics instrumentation (#1057)

.github/workflows/test.yml

@@ -6,7 +6,7 @@ on:
     - 'release/*'
   pull_request:
 env:
-  CORE_REPO_SHA: f81381cf8aca64a707d934f20c6c27d40b949dce
+  CORE_REPO_SHA: d52b80124ac0c9ea9515a1d90dfec37c532f8cd9
 
 jobs:
   build:

instrumentation/opentelemetry-instrumentation-system-metrics/src/opentelemetry/instrumentation/system_metrics/__init__.py

@@ -156,83 +156,83 @@ def _instrument(self, **kwargs):
         )
 
         self._meter.create_observable_counter(
-            callback=self._get_system_cpu_time,
             name="system.cpu.time",
+            callbacks=[self._get_system_cpu_time],
             description="System CPU time",
             unit="seconds",
         )
 
         self._meter.create_observable_gauge(
-            callback=self._get_system_cpu_utilization,
             name="system.cpu.utilization",
+            callbacks=[self._get_system_cpu_utilization],
             description="System CPU utilization",
             unit="1",
         )
 
         self._meter.create_observable_gauge(
-            callback=self._get_system_memory_usage,
             name="system.memory.usage",
+            callbacks=[self._get_system_memory_usage],
             description="System memory usage",
             unit="bytes",
         )
 
         self._meter.create_observable_gauge(
-            callback=self._get_system_memory_utilization,
             name="system.memory.utilization",
+            callbacks=[self._get_system_memory_utilization],
             description="System memory utilization",
             unit="1",
         )
 
         self._meter.create_observable_gauge(
-            callback=self._get_system_swap_usage,
             name="system.swap.usage",
+            callbacks=[self._get_system_swap_usage],
             description="System swap usage",
             unit="pages",
         )
 
         self._meter.create_observable_gauge(
-            callback=self._get_system_swap_utilization,
             name="system.swap.utilization",
+            callbacks=[self._get_system_swap_utilization],
             description="System swap utilization",
             unit="1",
         )
 
         # TODO Add _get_system_swap_page_faults
 
         # self._meter.create_observable_counter(
-        #     callback=self._get_system_swap_page_faults,
         #     name="system.swap.page_faults",
+        #     callbacks=[self._get_system_swap_page_faults],
         #     description="System swap page faults",
         #     unit="faults",
         #     value_type=int,
         # )
 
         # TODO Add _get_system_swap_page_operations
         # self._meter.create_observable_counter(
-        #     callback=self._get_system_swap_page_operations,
         #     name="system.swap.page_operations",
+        #     callbacks=self._get_system_swap_page_operations,
         #     description="System swap page operations",
         #     unit="operations",
         #     value_type=int,
         # )
 
         self._meter.create_observable_counter(
-            callback=self._get_system_disk_io,
             name="system.disk.io",
+            callbacks=[self._get_system_disk_io],
             description="System disk IO",
             unit="bytes",
         )
 
         self._meter.create_observable_counter(
-            callback=self._get_system_disk_operations,
             name="system.disk.operations",
+            callbacks=[self._get_system_disk_operations],
             description="System disk operations",
             unit="operations",
         )
 
         self._meter.create_observable_counter(
-            callback=self._get_system_disk_time,
             name="system.disk.time",
+            callbacks=[self._get_system_disk_time],
             description="System disk time",
             unit="seconds",
         )
@@ -260,57 +260,57 @@ def _instrument(self, **kwargs):
         # OSs, how to do the same in Windows?
 
         self._meter.create_observable_counter(
-            callback=self._get_system_network_dropped_packets,
             name="system.network.dropped_packets",
+            callbacks=[self._get_system_network_dropped_packets],
             description="System network dropped_packets",
             unit="packets",
         )
 
         self._meter.create_observable_counter(
-            callback=self._get_system_network_packets,
             name="system.network.packets",
+            callbacks=[self._get_system_network_packets],
             description="System network packets",
             unit="packets",
         )
 
         self._meter.create_observable_counter(
-            callback=self._get_system_network_errors,
             name="system.network.errors",
+            callbacks=[self._get_system_network_errors],
             description="System network errors",
             unit="errors",
         )
 
         self._meter.create_observable_counter(
-            callback=self._get_system_network_io,
             name="system.network.io",
+            callbacks=[self._get_system_network_io],
             description="System network io",
             unit="bytes",
         )
 
         self._meter.create_observable_up_down_counter(
-            callback=self._get_system_network_connections,
             name="system.network.connections",
+            callbacks=[self._get_system_network_connections],
             description="System network connections",
             unit="connections",
         )
 
         self._meter.create_observable_counter(
-            callback=self._get_runtime_memory,
             name=f"runtime.{self._python_implementation}.memory",
+            callbacks=[self._get_runtime_memory],
             description=f"Runtime {self._python_implementation} memory",
             unit="bytes",
         )
 
         self._meter.create_observable_counter(
-            callback=self._get_runtime_cpu_time,
             name=f"runtime.{self._python_implementation}.cpu_time",
+            callbacks=[self._get_runtime_cpu_time],
             description=f"Runtime {self._python_implementation} CPU time",
             unit="seconds",
         )
 
         self._meter.create_observable_counter(
-            callback=self._get_runtime_gc_count,
             name=f"runtime.{self._python_implementation}.gc_count",
+            callbacks=[self._get_runtime_gc_count],
             description=f"Runtime {self._python_implementation} GC count",
             unit="bytes",
         )