ollie/tools/route

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#!/usr/bin/env bash
# ollie:parallel read
# description: Route a subtask to an appropriate model tier. Returns immediately; the agent reports back to your prompt when done.
# Args: <instruction> [--tier=worker|expert] [--backend=<name>] [id]
set -euo pipefail
OLLIE="${OLLIE:-$HOME/mnt/ollie}"
die() { printf 'route: %s\n' "$*" >&2; exit 1; }
[ -z "${OLLIE_SESSION_ID:-}" ] && die "OLLIE_SESSION_ID not set (route must run inside a session)"
# Parse args
tier="worker"
backend_override=""
instruction=""
id=""
for arg in "$@"; do
case "$arg" in
--tier=*) tier="${arg#--tier=}" ;;
--backend=*) backend_override="${arg#--backend=}" ;;
*) [ -z "$instruction" ] && instruction="$arg" || id="$arg" ;;
esac
done
[ -z "$instruction" ] && die "instruction required"
case "$tier" in
worker|expert) ;;
*) die "unknown tier: $tier (use worker or expert)" ;;
esac
# Resolve backend: explicit flag > parent session's backend > OLLIE_BACKEND
if [ -n "$backend_override" ]; then
BACKEND="$backend_override"
else
BACKEND=$(cat "$OLLIE/s/$OLLIE_SESSION_ID/backend" 2>/dev/null || echo "${OLLIE_BACKEND:-openrouter}")
fi
# Resolve model: OLLIE_TIER_{TIER}_{BACKEND} > legacy flat vars > hardcoded defaults
tier_upper=$(echo "$tier" | tr '[:lower:]' '[:upper:]')
backend_lower=$(echo "$BACKEND" | tr '[:upper:]' '[:lower:]')
tier_var="OLLIE_TIER_${tier_upper}_${backend_lower}"
MODEL="${!tier_var:-}"
if [ -z "$MODEL" ]; then
# Legacy fallback
case "$tier" in
worker) MODEL="${OLLIE_CASCADE_MODEL:-mistralai/devstral-small}" ;;
expert) MODEL="${OLLIE_ESCALATE_MODEL:-anthropic/claude-sonnet-4-20250514}" ;;
esac
fi
# Agent config
case "$tier" in
worker) agent="worker" ;;
expert) agent="expert" ;;
esac
id="${id:-route-${tier}-$(date +%s%N)-$$}"
[ -n "$OLLIE_SESSION_ID" ] && id="${OLLIE_SESSION_ID}__${id}"
kv="name=${id}
cwd=$(pwd)
backend=${BACKEND}
model=${MODEL}
agent=${agent}"
printf '%s\n' "$kv" > "$OLLIE/s/new" || die "failed to create session"
B="$OLLIE/s/$id"
wait=0.1
for _ in 1 2 3 4 5 6 7 8; do
[ -d "$B" ] && break
sleep "$wait"
wait=$(awk "BEGIN{printf \"%.2f\", $wait * 2}")
done
[ -d "$B" ] || die "timeout waiting for session $id"
prompt="[parent_session_id=${OLLIE_SESSION_ID}]
[session_id=${id}]
Complete the following task. Read code, reason about implementation, and stay within scope.
When finished, write your result to: ${OLLIE}/s/${OLLIE_SESSION_ID}/prompt
Format:
[from=${id}]
STATUS: done
SUMMARY: <what was accomplished>
On failure:
[from=${id}]
STATUS: error
REASON: <why>
After writing the result, STOP. One write, then stop.
TASK:
${instruction}"
printf '%s\n' "$prompt" > "$B/prompt" || die "failed to submit prompt"
printf 'session=%s\npath=%s\nbackend=%s\nmodel=%s\ntier=%s\n' "$id" "$B" "$BACKEND" "$MODEL" "$tier"