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Mathias Fredriksson
1ba09d2ce2
chatd resends unresolved tool calls on every retry and replica
takeover, and each resend of execute started a new process: one
command in CODAGT-757 started 36 times. An interrupt could neither
stop the process nor report what happened.
The agent now runs a request that carries Coder-Tool-Call-Id once
per chat and tool call ID and responds to repeats with the saved
response. StartProcess, EditFiles, and WriteFile send the header.
POST /api/v0/tool-calls/{id}/cancel refuses later requests for the
call, waits for a running one, stops its process, and returns the
saved response.
A process started with a tool call ID uses it as its process ID, and
its timeout_ms counts from the first start, so a retry does not
restart the timeout. Processes are keyed by chat ID: a chat sees only
its own processes, and a request without a chat ID sees only
processes started without one. Exited processes are kept for an hour
instead of 5 minutes so that retries can still read their output.
Requests without the header behave as before. Old agents ignore the
header and respond to a cancel with 404.
Refs CODAGT-757