feat: download task attachments before starting the agent#52
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feat: download task attachments before starting the agent#52
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Add support for task attachments in the self-hosted worker. When the server
includes attachment download URLs in the task assignment, the worker now:
1. Downloads all attachments to a temporary directory using presigned URLs
2. Names files as {attachmentID}_{filename} to match the server's
ResolveAttachmentReferencesFromTaskDefinition convention
3. Passes --attachments-dir to the oz CLI so the agent can reference them
This enables features like Slack file uploads to work with self-hosted
agents. Previously, attachment data from the server was silently dropped
because the worker's TaskAssignmentMessage type didn't include the
attachments field and there was no download logic.
Companion PR: warpdotdev/warp-server (oz-agent/fix-selfhosted-attachments)
Co-Authored-By: Oz <oz-agent@warp.dev>
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Summary
Add support for downloading task attachments before starting the agent. This is the worker-side half of enabling attachment support (e.g. Slack file uploads, image attachments) for self-hosted agents.
Problem
Self-hosted workers silently dropped task attachments because:
TaskAssignmentMessagetype didn't include anattachmentsfield, so attachment data from the server was lost during JSON deserialization--attachments-dirto the oz CLISolution
Message types (
messages.go)AttachmentDownloadstruct matching the server's new fieldAttachmentsfield toTaskAssignmentMessageWorker (
worker.go){attachmentID}_{filename}to match the server'sResolveAttachmentReferencesFromTaskDefinitionconvention--attachments-dir <dir>to the oz CLI so the agent can reference themCompanion PR
Server-side changes: warpdotdev/warp-server#10433
Conversation: https://staging.warp.dev/conversation/00d4e66f-d3ee-461b-95e0-1055ba628e08
Run: https://oz.staging.warp.dev/runs/019d938e-348d-7ced-8536-3e4841875e8f
This PR was generated with Oz.