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Reads the recipe from sub_task.inputs, assembles the Download Package via the orchestrator (source docs from each row's bucket -> ZIP -> the dedicated DOCUMENT_EXPORTS_BUCKET), returns the presigned URL + skip summary for sub_task.outputs. Dockerfile/requirements mirror bulk_upload_finaliser. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
100 lines
4 KiB
Python
100 lines
4 KiB
Python
"""bulk_document_download Lambda (ADR-0060).
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Attach-mode (ADR-0055) handler. The FastAPI route created the app-owned Task +
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SubTask and pinned the recipe onto the SubTask's ``inputs``; this reads that
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recipe, assembles the Download Package through the orchestrator, and returns the
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result (presigned URL + skipped-document summary), which `TaskOrchestrator`
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records on ``sub_task.outputs``. A wholly-empty selection raises
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``SubTaskFailure`` from the orchestrator — recorded, not retried.
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PostgresConfig-only (POSTGRES_*), like the bulk_upload_finaliser Lambda. Source
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documents are read from each row's own ``s3_file_bucket``; the ZIP is written to
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the dedicated ``DOCUMENT_EXPORTS_BUCKET``. SES SMTP settings arrive as env vars
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(terraform bakes the
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Secrets Manager IAM-user credentials in).
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"""
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from __future__ import annotations
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import os
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from typing import Any
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import boto3
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from applications.bulk_document_download.bulk_document_download_trigger_body import (
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BulkDocumentDownloadTriggerBody,
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)
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from domain.tasks.tasks import Source
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from infrastructure.email.ses_smtp_email_sender import SesSmtpEmailSender
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from infrastructure.postgres.config import PostgresConfig
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from infrastructure.postgres.engine import make_engine, make_session
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from infrastructure.s3.s3_client import S3Client
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from infrastructure.s3.s3_document_bytes_reader import S3DocumentBytesReader
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from orchestration.bulk_document_download_orchestrator import (
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BulkDocumentDownloadOrchestrator,
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)
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from repositories.property.landlord_address_resolver import LandlordAddressResolver
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from repositories.tasks.subtask_postgres_repository import SubTaskPostgresRepository
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from repositories.uploaded_file.uploaded_file_postgres_repository import (
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UploadedFilePostgresRepository,
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)
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from utilities.aws_lambda.task_handler import task_handler
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# The Download Package link is valid for 60 minutes (ADR-0060).
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_URL_TTL_SECONDS = 3600
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def _email_sender() -> SesSmtpEmailSender:
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return SesSmtpEmailSender(
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host=os.environ["SES_SMTP_HOST"],
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port=int(os.environ["SES_SMTP_PORT"]),
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username=os.environ["SES_SMTP_USERNAME"],
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password=os.environ["SES_SMTP_PASSWORD"],
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from_address=os.environ["SES_SMTP_FROM_ADDRESS"],
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)
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@task_handler(task_source="bulk_document_download", source=Source.PORTFOLIO)
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def handler(body: dict[str, Any], context: Any) -> dict[str, Any]:
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trigger = BulkDocumentDownloadTriggerBody.model_validate(body)
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engine = make_engine(PostgresConfig.from_env(os.environ))
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session = make_session(engine)
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try:
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subtask = SubTaskPostgresRepository(session).get(trigger.subtask_id)
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recipe: dict[str, Any] = subtask.inputs or {}
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landlord_property_ids: list[str] = [
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str(x) for x in recipe["landlord_property_ids"]
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]
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recipient_email: str = str(recipe["recipient_email"])
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package_name: str = str(recipe["package_name"])
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boto_s3: Any = boto3.client("s3") # pyright: ignore[reportUnknownMemberType]
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orchestrator = BulkDocumentDownloadOrchestrator(
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uploaded_files=UploadedFilePostgresRepository(session),
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addresses=LandlordAddressResolver(session, landlord_property_ids),
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documents=S3DocumentBytesReader(boto_s3),
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packages=S3Client(boto_s3, os.environ["DOCUMENT_EXPORTS_BUCKET"]),
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email=_email_sender(),
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url_ttl_seconds=_URL_TTL_SECONDS,
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)
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result = orchestrator.run(
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landlord_property_ids=landlord_property_ids,
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recipient_email=recipient_email,
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package_name=package_name,
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)
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finally:
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session.close()
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return {
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"presigned_url": result.presigned_url,
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"package_s3_key": result.package_s3_key,
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"included": result.included,
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"skipped": [
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{
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"landlord_property_id": skip.landlord_property_id,
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"s3_key": skip.s3_key,
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"reason": skip.reason,
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}
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for skip in result.skipped
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],
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}
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