Initial commit: CT 116 inference harness — nginx, LiteLLM, router, dashboard, Redis
- Complexity-based routing (MoE default, Dense heavy, Gemma light) - Per-agent API keys with metrics tracking - Time-series usage graphs (24h/7d/30d) - Streaming support (SSE passthrough) - Unicode cleanup (ASCII-only output) - Vision support (gemma-4-E4B) - Tier enforcement (starter/professional/enterprise) - GPU health monitoring via sidecar polling - Unified dashboard with line graph
This commit is contained in:
Abiba (pi)
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FROM python:3.12-slim
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WORKDIR /app
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COPY requirements.txt .
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RUN pip install --no-cache-dir -r requirements.txt
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COPY router.py .
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EXPOSE 9000
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CMD ["python", "router.py"]
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flask==3.1.*
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redis==5.2.*
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requests==2.32.*
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import os, json, time, logging, traceback, threading, queue
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import requests, redis
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from flask import Flask, request, jsonify, Response, stream_with_context
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REDIS_URL = os.environ.get("REDIS_URL", "redis://redis:6379")
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GPU_MOE_URL = os.environ.get("GPU_MOE_URL", "http://192.168.68.15:8080/v1")
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GPU_DENSE_URL = os.environ.get("GPU_DENSE_URL", "http://192.168.68.8:8080/v1")
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GPU_LIGHT_URL = os.environ.get("GPU_LIGHT_URL", "http://192.168.68.110:8080/v1")
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GPU_SIDECARS = {
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"qwen3.6-35B-A3B": "http://192.168.68.15:8090",
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"qwen3.6-27B-code": "http://192.168.68.8:8090",
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"gemma-4-E4B": "http://192.168.68.110:8090",
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}
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GPU_URLS = {
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"qwen3.6-35B-A3B": GPU_MOE_URL,
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"qwen3.6-27B-code": GPU_DENSE_URL,
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"gemma-4-E4B": GPU_LIGHT_URL,
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}
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TIER_MODELS = {
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"starter": ["gemma-4-E4B"],
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"professional": ["qwen3.6-35B-A3B", "qwen3.6-27B-code", "gemma-4-E4B"],
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"enterprise": ["qwen3.6-35B-A3B", "qwen3.6-27B-code", "gemma-4-E4B"],
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}
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API_KEYS = {
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"sk-syslog-local-master-key": {"tier": "enterprise", "agent": "admin"},
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"sk-syslog-abiba": {"tier": "enterprise", "agent": "Abiba"},
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"sk-syslog-mumuni": {"tier": "enterprise", "agent": "Mumuni"},
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"sk-syslog-tanko": {"tier": "enterprise", "agent": "Tanko"},
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"sk-syslog-koby": {"tier": "enterprise", "agent": "Koby"},
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"sk-syslog-kagenz0": {"tier": "enterprise", "agent": "Kagenz0"},
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"sk-starter-abc123": {"tier": "starter", "agent": "test-starter"},
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"sk-professional-xyz789": {"tier": "professional", "agent": "test-pro"},
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}
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logging.basicConfig(level=logging.INFO, format="%(asctime)s [ROUTER] %(levelname)s %(message)s")
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log = logging.getLogger("router")
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try: r = redis.from_url(REDIS_URL, decode_responses=True); r.ping()
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except Exception: r = None
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app = Flask(__name__)
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sse_subscribers = []; sse_lock = threading.Lock()
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def check_gpu_health(model):
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url = GPU_SIDECARS.get(model)
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if not url: return {"status": "unknown"}
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try:
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resp = requests.get(url, timeout=5)
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if resp.status_code == 200:
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d = resp.json()
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pct = (d.get("vram_used_mb",0) / max(d.get("vram_total_mb",1), 1)) * 100
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return {"status": "healthy" if pct < 90 else "saturated", "vram_used_mb": d.get("vram_used_mb"), "vram_total_mb": d.get("vram_total_mb"), "vram_pct": round(pct,1), "temp_c": d.get("temp_c"), "gpu_util_pct": d.get("gpu_util_pct"), "gpu_name": d.get("gpu_name"), "power_w": d.get("power_w"), "power_limit_w": d.get("power_limit_w")}
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except Exception: pass
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return {"status": "down"}
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def available_models(): return [m for m in GPU_URLS if check_gpu_health(m)["status"] in ("healthy","saturated")]
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def estimate_tokens(msgs): return sum(len(str(m.get("content",""))) for m in msgs) // 4
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def route(rd, tier):
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msgs = rd.get("messages",[]); t = estimate_tokens(msgs)
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sys = any(m.get("role")=="system" for m in msgs)
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turns = len([m for m in msgs if m.get("role") in ("user","assistant")])
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hints = rd.get("routing_hints",{})
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allowed = TIER_MODELS.get(tier, ["gemma-4-E4B"])
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avail = [m for m in available_models() if m in allowed]
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if not avail: return {"model": allowed[0], "reason": "all_saturated"}
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req = rd.get("model","auto")
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if req != "auto": return {"model": req if req in avail else avail[0], "reason": "explicit"}
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if hints:
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if hints.get("priority")=="speed" and "gemma-4-E4B" in avail: return {"model":"gemma-4-E4B","reason":"hint_speed"}
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if hints.get("priority")=="quality" and "qwen3.6-27B-code" in avail: return {"model":"qwen3.6-27B-code","reason":"hint_quality"}
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if t > 4000 or sys or turns > 6:
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for m in ["qwen3.6-27B-code","qwen3.6-35B-A3B","gemma-4-E4B"]:
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if m in avail: return {"model":m,"reason":"heavy_reasoning"}
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first_msg = msgs[0].get("content","") if msgs else ""
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words = len(first_msg.split()) if isinstance(first_msg, str) else 99
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if words <= 3 and turns <= 1 and not sys and "gemma-4-E4B" in avail:
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return {"model":"gemma-4-E4B","reason":"ultra_light"}
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if "qwen3.6-35B-A3B" in avail: return {"model":"qwen3.6-35B-A3B","reason":"default_moe"}
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return {"model":avail[0],"reason":"fallback"}
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def clean_unicode(text):
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if not isinstance(text, str): return text
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return text.replace("\u2014","-").replace("\u2013","-").replace("\u2018",").replace(u2019,").replace("\u201c",').replace(u201d,').replace("\u2026","...").replace("\u00a0"," ")
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def clean_response(d):
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if isinstance(d, dict): return {k: clean_response(v) for k,v in d.items()}
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if isinstance(d, list): return [clean_response(v) for v in d]
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if isinstance(d, str): return clean_unicode(d)
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return d
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def get_metrics():
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d = {"gpus":[],"route_counts":{},"agent_counts":{},"tier_counts":{},"recent":[],"timestamp":time.time()}
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for m in GPU_URLS:
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h = check_gpu_health(m)
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d["gpus"].append({"id":m,"gpu_name":h.get("gpu_name",m),"status":h.get("status"),"vram_used_mb":h.get("vram_used_mb"),"vram_total_mb":h.get("vram_total_mb"),"vram_pct":h.get("vram_pct"),"temp_c":h.get("temp_c"),"gpu_util_pct":h.get("gpu_util_pct"),"power_w":h.get("power_w"),"power_limit_w":h.get("power_limit_w")})
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if r:
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try:
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for m in GPU_URLS: d["route_counts"][m] = int(r.get("routes:"+m) or 0)
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for k,v in API_KEYS.items():
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c = int(r.get("routes:agent:"+v["agent"]) or 0)
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if c>0: d["agent_counts"][v["agent"]] = c
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for t in TIER_MODELS: d["tier_counts"][t] = int(r.get("routes:tier:"+t) or 0)
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raw = r.lrange("routes:recent",0,49)
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d["recent"] = [json.loads(x) for x in raw] if raw else []
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except Exception: pass
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return d
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def bcast():
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data = get_metrics(); payload = json.dumps(data)
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with sse_lock:
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dead = []
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for q in sse_subscribers:
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try: q.put(payload)
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except Exception: dead.append(q)
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for q in dead: sse_subscribers.remove(q)
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@app.route("/v1/chat/completions", methods=["POST"])
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def chat():
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try:
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rd = request.get_json(force=True)
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ak = request.headers.get("Authorization","").replace("Bearer ","")
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ki = API_KEYS.get(ak, {"tier":"starter","agent":"unknown"})
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tier, agent = ki["tier"], ki["agent"]
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d = route(rd, tier); model, reason, url = d["model"], d["reason"], GPU_URLS[d["model"]]
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is_stream = rd.get("stream", False)
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log.info("ROUTE: %s -> %s (%s) stream=%s", agent, model, reason, is_stream)
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if r:
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try:
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r.incr("routes:"+model); r.incr("routes:tier:"+tier); r.incr("routes:agent:"+agent)
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r.incr("ts:"+model+":"+time.strftime("%Y%m%d%H"))
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r.lpush("routes:recent", json.dumps({"ts":time.time(),"model":model,"reason":reason,"tier":tier,"agent":agent}))
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r.ltrim("routes:recent",0,999)
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except Exception: pass
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start = time.time()
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resp = requests.post(url+"/chat/completions", json=rd,
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headers={"Content-Type":"application/json","Authorization":"Bearer not-needed"}, timeout=120, stream=is_stream)
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lat = int((time.time()-start)*1000)
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if resp.status_code != 200: return jsonify({"error":"GPU error "+str(resp.status_code)}), 502
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if is_stream:
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def gen():
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for raw in resp.iter_content(chunk_size=None, decode_unicode=True):
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if raw: yield clean_unicode(raw)
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bcast()
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return Response(stream_with_context(gen()), mimetype="text/event-stream")
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data = clean_response(resp.json())
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for c in data.get("choices",[]):
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msg = c.get("message",{})
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if not msg.get("content") and msg.get("reasoning_content"):
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msg["content"] = msg["reasoning_content"]
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data["routing"] = {"model":model,"reason":reason,"gpu":url,"tier":tier,"agent":agent,"latency_ms":lat}
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bcast()
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return jsonify(data)
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except requests.Timeout: return jsonify({"error":"timeout"}), 504
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except Exception as e:
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log.error("Error: %s\n%s", e, traceback.format_exc())
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return jsonify({"error":str(e)}), 500
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@app.route("/v1/models")
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def models(): return jsonify({"object":"list","data":[{"id":m,"object":"model","owned_by":"syslog","status":check_gpu_health(m).get("status"),"gpu":check_gpu_health(m).get("gpu_name")} for m in GPU_URLS]})
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@app.route("/health")
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def health(): return jsonify({"status":"healthy","redis":"connected" if r else "down","gpus":{m:check_gpu_health(m) for m in GPU_URLS},"available_models":available_models()})
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@app.route("/metrics")
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def metrics(): return jsonify(get_metrics())
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@app.route("/metrics/timeseries")
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def metrics_timeseries():
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period = request.args.get("period", "day"); models_list = list(GPU_URLS.keys())
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data = {"models": {}, "labels": []}
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if period == "day":
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buckets = [time.strftime("%Y%m%d%H", time.gmtime(time.time()-h*3600)) for h in range(23,-1,-1)]
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data["labels"] = [time.strftime("%H:00", time.gmtime(time.time()-h*3600)) for h in range(23,-1,-1)]
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elif period == "week":
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buckets = [time.strftime("%Y%m%d", time.gmtime(time.time()-d*86400)) for d in range(6,-1,-1)]
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data["labels"] = [time.strftime("%a", time.gmtime(time.time()-d*86400)) for d in range(6,-1,-1)]
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else:
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buckets = [time.strftime("%Y%m%d", time.gmtime(time.time()-d*86400)) for d in range(29,-1,-1)]
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data["labels"] = [time.strftime("%m/%d", time.gmtime(time.time()-d*86400)) for d in range(29,-1,-1)]
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if r:
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for model in models_list:
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counts = []
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for bucket in buckets:
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total = 0
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if period in ("week","month"):
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for hh in range(24): total += int(r.get("ts:"+model+":"+bucket+"{:02d}".format(hh)) or 0)
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else: total = int(r.get("ts:"+model+":"+bucket) or 0)
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counts.append(total)
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data["models"][model] = counts
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return jsonify(data)
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@app.route("/stream")
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def stream():
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def ev():
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q = queue.Queue()
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with sse_lock: sse_subscribers.append(q)
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try:
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yield "data: "+json.dumps(get_metrics())+"\n\n"
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while True:
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try: yield "data: "+q.get(timeout=3)+"\n\n"
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except queue.Empty: yield "data: "+json.dumps(get_metrics())+"\n\n"
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except GeneratorExit: pass
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finally:
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with sse_lock:
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if q in sse_subscribers: sse_subscribers.remove(q)
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return Response(stream_with_context(ev()), mimetype="text/event-stream",
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headers={"Cache-Control":"no-cache","X-Accel-Buffering":"no","Access-Control-Allow-Origin":"*"})
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if __name__ == "__main__":
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log.info("Router on :9000")
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app.run(host="0.0.0.0", port=9000, debug=False)
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