Add a note about force_flush implementation for OTLP exporters (#3262)

exporter/opentelemetry-exporter-otlp-proto-grpc/src/opentelemetry/exporter/otlp/proto/grpc/_log_exporter/__init__.py

@@ -107,8 +107,12 @@ def _translate_data(
     def export(self, batch: Sequence[LogData]) -> LogExportResult:
         return self._export(batch)
 
-    def shutdown(self) -> None:
-        pass
+    def shutdown(self, timeout_millis: float = 30_000, **kwargs) -> None:
+        OTLPExporterMixin.shutdown(self, timeout_millis=timeout_millis)
+
+    def force_flush(self, timeout_millis: float = 10_000) -> bool:
+        """Nothing is buffered in this exporter, so this method does nothing."""
+        return True
 
     @property
     def _exporting(self) -> str:

exporter/opentelemetry-exporter-otlp-proto-grpc/src/opentelemetry/exporter/otlp/proto/grpc/exporter.py

@@ -16,11 +16,20 @@
 
 import threading
 from abc import ABC, abstractmethod
-from collections.abc import Sequence
+from collections.abc import Sequence  # noqa: F401
 from logging import getLogger
 from os import environ
 from time import sleep
-from typing import Any, Callable, Dict, Generic, List, Optional, Tuple, Union
+from typing import (  # noqa: F401
+    Any,
+    Callable,
+    Dict,
+    Generic,
+    List,
+    Optional,
+    Tuple,
+    Union,
+)
 from typing import Sequence as TypingSequence
 from typing import TypeVar
 from urllib.parse import urlparse
@@ -45,7 +54,7 @@
 from opentelemetry.exporter.otlp.proto.grpc import (
     _OTLP_GRPC_HEADERS,
 )
-from opentelemetry.proto.common.v1.common_pb2 import (
+from opentelemetry.proto.common.v1.common_pb2 import (  # noqa: F401
     AnyValue,
     ArrayValue,
     KeyValue,
@@ -97,44 +106,6 @@ def environ_to_compression(environ_key: str) -> Optional[Compression]:
     return _ENVIRON_TO_COMPRESSION[environ_value]
 
 
-def _translate_value(value: Any) -> KeyValue:
-    if isinstance(value, bool):
-        any_value = AnyValue(bool_value=value)
-
-    elif isinstance(value, str):
-        any_value = AnyValue(string_value=value)
-
-    elif isinstance(value, int):
-        any_value = AnyValue(int_value=value)
-
-    elif isinstance(value, float):
-        any_value = AnyValue(double_value=value)
-
-    elif isinstance(value, Sequence):
-        any_value = AnyValue(
-            array_value=ArrayValue(values=[_translate_value(v) for v in value])
-        )
-
-    # Tracing specs currently does not support Mapping type attributes
-    # elif isinstance(value, Mapping):
-    #     any_value = AnyValue(
-    #         kvlist_value=KeyValueList(
-    #             values=[
-    #                 _translate_key_values(str(k), v) for k, v in value.items()
-    #             ]
-    #         )
-    #     )
-
-    else:
-        raise Exception(f"Invalid type {type(value)} of value {value}")
-
-    return any_value
-
-
-def _translate_key_values(key: str, value: Any) -> KeyValue:
-    return KeyValue(key=key, value=_translate_value(value))
-
-
 @deprecated(
     version="1.18.0",
     reason="Use one of the encoders from opentelemetry-exporter-otlp-proto-common instead",
@@ -271,17 +242,6 @@ def _translate_data(
     ) -> ExportServiceRequestT:
         pass
 
-    def _translate_attributes(self, attributes) -> TypingSequence[KeyValue]:
-        output = []
-        if attributes:
-
-            for key, value in attributes.items():
-                try:
-                    output.append(_translate_key_values(key, value))
-                except Exception as error:  # pylint: disable=broad-except
-                    logger.exception(error)
-        return output
-
     def _export(
         self, data: Union[TypingSequence[ReadableSpan], MetricsData]
     ) -> ExportResultT:

exporter/opentelemetry-exporter-otlp-proto-grpc/src/opentelemetry/exporter/otlp/proto/grpc/metric_exporter/__init__.py

@@ -258,4 +258,5 @@ def _exporting(self) -> str:
         return "metrics"
 
     def force_flush(self, timeout_millis: float = 10_000) -> bool:
+        """Nothing is buffered in this exporter, so this method does nothing."""
         return True

exporter/opentelemetry-exporter-otlp-proto-grpc/src/opentelemetry/exporter/otlp/proto/grpc/trace_exporter/__init__.py

@@ -144,6 +144,7 @@ def shutdown(self) -> None:
         OTLPExporterMixin.shutdown(self)
 
     def force_flush(self, timeout_millis: int = 30000) -> bool:
+        """Nothing is buffered in this exporter, so this method does nothing."""
         return True
 
     @property

exporter/opentelemetry-exporter-otlp-proto-grpc/tests/logs/test_otlp_logs_exporter.py

@@ -23,10 +23,10 @@
 from grpc import ChannelCredentials, Compression, StatusCode, server
 
 from opentelemetry._logs import SeverityNumber
+from opentelemetry.exporter.otlp.proto.common._internal import _encode_value
 from opentelemetry.exporter.otlp.proto.grpc._log_exporter import (
     OTLPLogExporter,
 )
-from opentelemetry.exporter.otlp.proto.grpc.exporter import _translate_value
 from opentelemetry.exporter.otlp.proto.grpc.version import __version__
 from opentelemetry.proto.collector.logs.v1.logs_service_pb2 import (
     ExportLogsServiceRequest,
@@ -367,7 +367,7 @@ def test_translate_log_data(self):
                                         16,
                                         "big",
                                     ),
-                                    body=_translate_value(
+                                    body=_encode_value(
                                         "Zhengzhou, We have a heaviest rains in 1000 years"
                                     ),
                                     attributes=[
@@ -426,7 +426,7 @@ def test_translate_multiple_logs(self):
                                         16,
                                         "big",
                                     ),
-                                    body=_translate_value(
+                                    body=_encode_value(
                                         "Zhengzhou, We have a heaviest rains in 1000 years"
                                     ),
                                     attributes=[
@@ -463,13 +463,13 @@ def test_translate_multiple_logs(self):
                                         16,
                                         "big",
                                     ),
-                                    body=_translate_value(
+                                    body=_encode_value(
                                         "Sydney, Opera House is closed"
                                     ),
                                     attributes=[
                                         KeyValue(
                                             key="custom_attr",
-                                            value=_translate_value([1, 2, 3]),
+                                            value=_encode_value([1, 2, 3]),
                                         ),
                                     ],
                                     flags=int(
@@ -508,7 +508,7 @@ def test_translate_multiple_logs(self):
                                         16,
                                         "big",
                                     ),
-                                    body=_translate_value(
+                                    body=_encode_value(
                                         "Mumbai, Boil water before drinking"
                                     ),
                                     attributes=[],

exporter/opentelemetry-exporter-otlp-proto-grpc/tests/test_otlp_metrics_exporter.py

@@ -746,6 +746,7 @@ def test_shutdown(self):
                 warning.records[0].message,
                 "Exporter already shutdown, ignoring batch",
             )
+        self.exporter = OTLPMetricExporter()
 
     def test_shutdown_wait_last_export(self):
         add_MetricsServiceServicer_to_server(

exporter/opentelemetry-exporter-otlp-proto-grpc/tests/test_otlp_trace_exporter.py

@@ -26,10 +26,10 @@
 from grpc import ChannelCredentials, Compression, StatusCode, server
 
 from opentelemetry.attributes import BoundedAttributes
-from opentelemetry.exporter.otlp.proto.grpc.exporter import (
-    _is_backoff_v2,
-    _translate_key_values,
+from opentelemetry.exporter.otlp.proto.common._internal import (
+    _encode_key_value,
 )
+from opentelemetry.exporter.otlp.proto.grpc.exporter import _is_backoff_v2
 from opentelemetry.exporter.otlp.proto.grpc.trace_exporter import (
     OTLPSpanExporter,
 )
@@ -840,31 +840,31 @@ def test_span_status_translate(self):
 
     # pylint:disable=no-member
     def test_translate_key_values(self):
-        bool_value = _translate_key_values("bool_type", False)
+        bool_value = _encode_key_value("bool_type", False)
         self.assertTrue(isinstance(bool_value, KeyValue))
         self.assertEqual(bool_value.key, "bool_type")
         self.assertTrue(isinstance(bool_value.value, AnyValue))
         self.assertFalse(bool_value.value.bool_value)
 
-        str_value = _translate_key_values("str_type", "str")
+        str_value = _encode_key_value("str_type", "str")
         self.assertTrue(isinstance(str_value, KeyValue))
         self.assertEqual(str_value.key, "str_type")
         self.assertTrue(isinstance(str_value.value, AnyValue))
         self.assertEqual(str_value.value.string_value, "str")
 
-        int_value = _translate_key_values("int_type", 2)
+        int_value = _encode_key_value("int_type", 2)
         self.assertTrue(isinstance(int_value, KeyValue))
         self.assertEqual(int_value.key, "int_type")
         self.assertTrue(isinstance(int_value.value, AnyValue))
         self.assertEqual(int_value.value.int_value, 2)
 
-        double_value = _translate_key_values("double_type", 3.2)
+        double_value = _encode_key_value("double_type", 3.2)
         self.assertTrue(isinstance(double_value, KeyValue))
         self.assertEqual(double_value.key, "double_type")
         self.assertTrue(isinstance(double_value.value, AnyValue))
         self.assertEqual(double_value.value.double_value, 3.2)
 
-        seq_value = _translate_key_values("seq_type", ["asd", "123"])
+        seq_value = _encode_key_value("seq_type", ["asd", "123"])
         self.assertTrue(isinstance(seq_value, KeyValue))
         self.assertEqual(seq_value.key, "seq_type")
         self.assertTrue(isinstance(seq_value.value, AnyValue))

exporter/opentelemetry-exporter-otlp-proto-http/src/opentelemetry/exporter/otlp/proto/http/_log_exporter/__init__.py

@@ -173,6 +173,10 @@ def export(self, batch: Sequence[LogData]) -> LogExportResult:
                 return LogExportResult.FAILURE
         return LogExportResult.FAILURE
 
+    def force_flush(self, timeout_millis: float = 10_000) -> bool:
+        """Nothing is buffered in this exporter, so this method does nothing."""
+        return True
+
     def shutdown(self):
         if self._shutdown:
             _logger.warning("Exporter already shutdown, ignoring call")

exporter/opentelemetry-exporter-otlp-proto-http/src/opentelemetry/exporter/otlp/proto/http/metric_exporter/__init__.py

@@ -215,6 +215,7 @@ def _exporting(self) -> str:
         return "metrics"
 
     def force_flush(self, timeout_millis: float = 10_000) -> bool:
+        """Nothing is buffered in this exporter, so this method does nothing."""
         return True
 
 

exporter/opentelemetry-exporter-otlp-proto-http/src/opentelemetry/exporter/otlp/proto/http/trace_exporter/__init__.py

@@ -179,6 +179,7 @@ def shutdown(self):
         self._shutdown = True
 
     def force_flush(self, timeout_millis: int = 30000) -> bool:
+        """Nothing is buffered in this exporter, so this method does nothing."""
         return True