maint: enable linting step in CI (#92)

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## Which problem is this PR solving?

- Closes #31 

## Short description of the changes

built off of #85 , please review that one first! Only the last 3 commits
in this PR are finalizing turning on the linting in CI.
## How to verify that this has the expected result

In CircleCI, the linting step should run.

.circleci/config.yml

@@ -27,15 +27,15 @@ executors:
       - image: cibuilds/github:0.13.0
 
 jobs:
-  # lint:
-  #   executor:
-  #     name: python/default
-  #     tag: *default_python_version
-  #   steps:
-  #     - checkout
-  #     - python/install-packages:
-  #         pkg-manager: poetry
-  #     - run: make lint
+  lint:
+    executor:
+      name: python/default
+      tag: *default_python_version
+    steps:
+      - checkout
+      - python/install-packages:
+          pkg-manager: poetry
+      - run: make lint
   codestyle:
     executor:
       name: python/default
@@ -121,7 +121,7 @@ jobs:
 workflows:
   build:
     jobs:
-      # - lint # We need to get our rules in order.
+      - lint
       - codestyle:
           <<: *filters_always
       - test:

src/honeycomb/opentelemetry/baggage.py

@@ -1,3 +1,4 @@
+from typing import Optional
 from opentelemetry.baggage import get_all as get_all_baggage
 from opentelemetry.sdk.trace.export import SpanProcessor
 from opentelemetry.trace import Span
@@ -33,8 +34,8 @@ def __init__(self) -> None:
 
     def on_start(
         self,
-        span: Span,
-        parent_context: Context
+        span: "Span",
+        parent_context: Optional[Context] = None
     ) -> None:
         baggage = get_all_baggage(parent_context)
         for key, value in baggage.items():

src/honeycomb/opentelemetry/local_exporter.py

@@ -66,7 +66,7 @@ def export(self, spans: typing.Sequence[ReadableSpan]) -> SpanExportResult:
                     )
         return SpanExportResult.SUCCESS
 
-    def force_flush(self) -> bool:
+    def force_flush(self, timeout_millis: int = 30000) -> bool:
         """Ensures all telemetry waiting to be dispatched is processed.
         """
         return True

src/honeycomb/opentelemetry/options.py

@@ -14,6 +14,7 @@
     OTEL_SERVICE_NAME
 )
 from grpc import ssl_channel_credentials
+OTEL_SERVICE_VERSION = "OTEL_SERVICE_VERSION"
 
 # Environment Variable Names
 OTEL_SERVICE_VERSION = "OTEL_SERVICE_VERSION"