[Observability] Integrate OpenTelemetry (#17627)

api/configs/app_config.py

@@ -9,6 +9,7 @@ from .enterprise import EnterpriseFeatureConfig
 from .extra import ExtraServiceConfig
 from .feature import FeatureConfig
 from .middleware import MiddlewareConfig
+from .observability import ObservabilityConfig
 from .packaging import PackagingInfo
 from .remote_settings_sources import RemoteSettingsSource, RemoteSettingsSourceConfig, RemoteSettingsSourceName
 from .remote_settings_sources.apollo import ApolloSettingsSource
@@ -59,6 +60,8 @@ class DifyConfig(
     MiddlewareConfig,
     # Extra service configs
     ExtraServiceConfig,
+    # Observability configs
+    ObservabilityConfig,
     # Remote source configs
     RemoteSettingsSourceConfig,
     # Enterprise feature configs

api/configs/observability/__init__.py

@@ -0,0 +1,9 @@
+from configs.observability.otel.otel_config import OTelConfig
+
+
+class ObservabilityConfig(OTelConfig):
+    """
+    Observability configuration settings
+    """
+
+    pass

api/configs/observability/otel/otel_config.py

@@ -0,0 +1,44 @@
+from pydantic import Field
+from pydantic_settings import BaseSettings
+
+
+class OTelConfig(BaseSettings):
+    """
+    OpenTelemetry configuration settings
+    """
+
+    ENABLE_OTEL: bool = Field(
+        description="Whether to enable OpenTelemetry",
+        default=False,
+    )
+
+    OTLP_BASE_ENDPOINT: str = Field(
+        description="OTLP base endpoint",
+        default="http://localhost:4318",
+    )
+
+    OTLP_API_KEY: str = Field(
+        description="OTLP API key",
+        default="",
+    )
+
+    OTEL_EXPORTER_TYPE: str = Field(
+        description="OTEL exporter type",
+        default="otlp",
+    )
+
+    OTEL_SAMPLING_RATE: float = Field(default=0.1, description="Sampling rate for traces (0.0 to 1.0)")
+
+    OTEL_BATCH_EXPORT_SCHEDULE_DELAY: int = Field(
+        default=5000, description="Batch export schedule delay in milliseconds"
+    )
+
+    OTEL_MAX_QUEUE_SIZE: int = Field(default=2048, description="Maximum queue size for the batch span processor")
+
+    OTEL_MAX_EXPORT_BATCH_SIZE: int = Field(default=512, description="Maximum export batch size")
+
+    OTEL_METRIC_EXPORT_INTERVAL: int = Field(default=60000, description="Metric export interval in milliseconds")
+
+    OTEL_BATCH_EXPORT_TIMEOUT: int = Field(default=10000, description="Batch export timeout in milliseconds")
+
+    OTEL_METRIC_EXPORT_TIMEOUT: int = Field(default=30000, description="Metric export timeout in milliseconds")