send_webhook fixes

server/reflector/hatchet/run_workers.py

@@ -1,5 +1,5 @@
 """
-Run Hatchet workers for processing pipelines.
+Run Hatchet workers for the diarization pipeline.
 Runs as a separate process, just like Celery workers.
 
 Usage:
@@ -39,7 +39,7 @@ def main() -> None:
     # Can't use lazy init: decorators need the client object when function is defined.
     from reflector.hatchet.client import HatchetClientManager  # noqa: PLC0415
     from reflector.hatchet.workflows import (  # noqa: PLC0415
-        daily_multitrack_pipeline,
+        diarization_pipeline,
         subject_workflow,
         topic_chunk_workflow,
         track_workflow,
@@ -54,7 +54,7 @@ def main() -> None:
     worker = hatchet.worker(
         "reflector-pipeline-worker",
         workflows=[
-            daily_multitrack_pipeline,
+            diarization_pipeline,
             subject_workflow,
             topic_chunk_workflow,
             track_workflow,

server/reflector/hatchet/workflows/__init__.py

@@ -1,8 +1,8 @@
 """Hatchet workflow definitions."""
 
-from reflector.hatchet.workflows.daily_multitrack_pipeline import (
+from reflector.hatchet.workflows.diarization_pipeline import (
     PipelineInput,
-    daily_multitrack_pipeline,
+    diarization_pipeline,
 )
 from reflector.hatchet.workflows.subject_processing import (
     SubjectInput,
@@ -15,7 +15,7 @@ from reflector.hatchet.workflows.topic_chunk_processing import (
 from reflector.hatchet.workflows.track_processing import TrackInput, track_workflow
 
 __all__ = [
-    "daily_multitrack_pipeline",
+    "diarization_pipeline",
     "subject_workflow",
     "topic_chunk_workflow",
     "track_workflow",

server/reflector/hatchet/workflows/daily_multitrack_pipeline.py

@@ -4,7 +4,6 @@ Hatchet main workflow: DailyMultitrackPipeline
 Multitrack processing pipeline for Daily.co recordings.
 Orchestrates the full processing flow from recording metadata to final transcript.
 
-Note: This workflow was previously named DiarizationPipeline, which was misleading.
 Daily.co recordings don't require ML diarization - speaker identification comes from
 track index (each participant's audio is a separate track).
 

server/reflector/services/transcript_process.py

@@ -258,7 +258,7 @@ async def dispatch_transcript_processing(
                     pass
 
             workflow_id = await HatchetClientManager.start_workflow(
-                workflow_name="DailyMultitrackPipeline",
+                workflow_name="DiarizationPipeline",
                 input_data={
                     "recording_id": config.recording_id,
                     "tracks": [{"s3_key": k} for k in config.track_keys],

server/reflector/utils/webhook.py

@@ -1,4 +1,4 @@
-"""Webhook utilities and Pydantic models.
+"""Webhook utilities.
 
 Shared webhook functionality for both Hatchet and Celery pipelines.
 """
@@ -13,71 +13,31 @@ from pydantic import BaseModel
 
 from reflector.logger import logger
 from reflector.settings import settings
+from reflector.utils.webhook_outgoing_models import (
+    WebhookCalendarEventPayload,
+    WebhookParticipantPayload,
+    WebhookPayload,
+    WebhookRoomPayload,
+    WebhookTestPayload,
+    WebhookTopicPayload,
+    WebhookTranscriptPayload,
+)
 
-
-class WebhookTopicPayload(BaseModel):
-    title: str
-    summary: str
-    timestamp: float
-    duration: float | None
-    webvtt: str
-
-
-class WebhookParticipantPayload(BaseModel):
-    id: str
-    name: str | None
-    speaker: int | None
-
-
-class WebhookRoomPayload(BaseModel):
-    id: str
-    name: str
-
-
-class WebhookCalendarEventPayload(BaseModel):
-    id: str
-    ics_uid: str | None = None
-    title: str | None = None
-    start_time: datetime | None = None
-    end_time: datetime | None = None
-    description: str | None = None
-    location: str | None = None
-    attendees: list[str] | None = None
-
-
-class WebhookTranscriptPayload(BaseModel):
-    id: str
-    room_id: str | None
-    created_at: datetime
-    duration: float | None
-    title: str | None
-    short_summary: str | None
-    long_summary: str | None
-    webvtt: str | None
-    topics: list[WebhookTopicPayload]
-    participants: list[WebhookParticipantPayload]
-    source_language: str
-    target_language: str
-    status: str
-    frontend_url: str
-    action_items: dict | None
-
-
-class WebhookPayload(BaseModel):
-    event: str
-    event_id: str
-    timestamp: datetime
-    transcript: WebhookTranscriptPayload
-    room: WebhookRoomPayload
-    calendar_event: WebhookCalendarEventPayload | None = None
-
-
-class WebhookTestPayload(BaseModel):
-    event: str = "test"
-    event_id: str
-    timestamp: datetime
-    message: str
-    room: WebhookRoomPayload
+__all__ = [
+    "WebhookCalendarEventPayload",
+    "WebhookParticipantPayload",
+    "WebhookPayload",
+    "WebhookRoomPayload",
+    "WebhookTestPayload",
+    "WebhookTopicPayload",
+    "WebhookTranscriptPayload",
+    "_serialize_payload",
+    "build_transcript_webhook_payload",
+    "build_test_webhook_payload",
+    "build_webhook_headers",
+    "generate_webhook_signature",
+    "send_webhook_request",
+]
 
 
 def _serialize_payload(payload: BaseModel) -> bytes:

server/reflector/utils/webhook_outgoing_models.py

@@ -0,0 +1,80 @@
+"""Pydantic models for outgoing webhook payloads.
+
+These models define the structure of webhook payloads sent by Reflector
+to external services when transcript processing completes.
+"""
+
+from datetime import datetime
+from typing import Literal
+
+from pydantic import BaseModel
+
+from reflector.utils.string import NonEmptyString
+
+WebhookTranscriptEventType = Literal["transcript.completed"]
+WebhookTestEventType = Literal["test"]
+
+
+class WebhookTopicPayload(BaseModel):
+    title: NonEmptyString
+    summary: NonEmptyString
+    timestamp: float
+    duration: float | None
+    webvtt: str  # can be empty when no words
+
+
+class WebhookParticipantPayload(BaseModel):
+    id: NonEmptyString
+    name: str | None
+    speaker: int | None
+
+
+class WebhookRoomPayload(BaseModel):
+    id: NonEmptyString
+    name: NonEmptyString
+
+
+class WebhookCalendarEventPayload(BaseModel):
+    id: NonEmptyString
+    ics_uid: str | None = None
+    title: str | None = None
+    start_time: datetime | None = None
+    end_time: datetime | None = None
+    description: str | None = None
+    location: str | None = None
+    attendees: list[str] | None = None
+
+
+class WebhookTranscriptPayload(BaseModel):
+    id: NonEmptyString
+    room_id: NonEmptyString | None
+    created_at: datetime
+    duration: float | None
+    title: str | None
+    short_summary: str | None
+    long_summary: str | None
+    webvtt: str | None
+    topics: list[WebhookTopicPayload]
+    participants: list[WebhookParticipantPayload]
+    source_language: NonEmptyString
+    target_language: NonEmptyString
+    status: NonEmptyString
+    frontend_url: NonEmptyString
+    action_items: dict | None
+
+
+class WebhookPayload(BaseModel):
+    event: WebhookTranscriptEventType
+    event_id: NonEmptyString
+    timestamp: datetime
+    transcript: WebhookTranscriptPayload
+    room: WebhookRoomPayload
+    calendar_event: WebhookCalendarEventPayload | None = None
+
+
+class WebhookTestPayload(BaseModel):
+    event: WebhookTestEventType
+    event_id: NonEmptyString
+    timestamp: datetime
+    message: NonEmptyString
+    room: WebhookRoomPayload