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Durable agent run resume
This example shows the agent-side counterpart to examples/flow-durable: an
agent run is checkpointed with the same Checkpoint interface used by flows,
then resumed after an interruption without repeating a completed side effect.
The sample uses an in-memory store to keep repeated local runs deterministic;
use your service store for process-restart recovery.
Run it with:
go run ./examples/agent-durable
The demo model calls inventory.reserve, then fails to mimic a process dying
after the tool call was checkpointed. micro.AgentPending finds the unfinished
run and micro.AgentResume continues it from the saved checkpoint. The final
tool executions: 1 line is the important bit: the reservation tool was not
called a second time during resume.
In a service, use the same pattern at startup:
pending, _ := micro.AgentPending(ctx, agent)
for _, run := range pending {
_, _ = micro.AgentResume(ctx, agent, run.ID)
}
context.Context cancellation and deadlines are still honored by checkpoint
loads/saves, model calls, and tool calls. Runs with terminal statuses such as
done, canceled, and expired are not returned by AgentPending.