Make echo endpoint return JSON object

Signed-off-by: GitHub <[email protected]>

src/reporter/app.py

@@ -6,9 +6,8 @@
 import sentry_sdk
 
 from reporter.constants import GIT_SHA, Sentry
-from reporter.http_client import HTTPClientDependency
-from reporter.models import Observation, ServerMetadata
-from reporter.observations import send_observation
+from reporter.pypi_client import PyPIClientDependency
+from reporter.models import Observation, ServerMetadata, EchoResponse
 
 from reporter.dependencies import build_graph_client
 from reporter.mailer import build_report_email_content, send_mail
@@ -33,6 +32,13 @@ async def metadata() -> ServerMetadata:
     )
 
 
+@app.get("/echo", summary="Echo the username of the PyPI User")
+async def echo(pypi_client: PyPIClientDependency) -> EchoResponse:
+    """Return the username of the PyPI User."""
+    username = await pypi_client.echo()
+    return EchoResponse(username=username)
+
+
 @app.post("/report/{project_name}")
 async def report_endpoint(project_name: str, observation: Observation, http_client: HTTPClientDependency):
     await send_observation(project_name=project_name, observation=observation, http_client=http_client)

src/reporter/models.py

@@ -12,6 +12,12 @@ class ServerMetadata(BaseModel):
     commit: str
 
 
+class EchoResponse(BaseModel):
+    """Reponse from PyPI's echo endpoint."""
+
+    username: str
+
+
 # Taken from
 # https://github.com/pypi/warehouse/blob/4d2628560e6e764dc80a026fa080e9cf70446c81/warehouse/observations/models.py#L109-L122
 class ObservationKind(Enum):