120 lines
3.4 KiB
Python
120 lines
3.4 KiB
Python
import fcntl
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import hmac
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import json
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import logging
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import os
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from flask import (Flask, request, jsonify, abort, render_template)
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from ltsdb_json import LTS
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logging.basicConfig(level=logging.DEBUG)
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app = Flask(__name__)
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log = logging.getLogger()
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@app.route("/")
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def home():
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return jsonify({ "success": None })
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@app.route("/report", methods=["POST"])
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def report():
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data = request.get_json()
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n_ts = 0
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n_dp = 0
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for d in data:
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d["description"]["remote_addr"] = request.remote_addr
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d["description"]["node"] = verify_node(d)
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log.info("received %s", json.dumps(d))
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ts = LTS(d["description"])
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for dp in d["data"]:
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ts.add(*dp)
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ts.save()
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n_dp += 1
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n_ts += 1
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return jsonify({ "success": True, "timeseries": n_ts, "datapoints": n_dp })
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@app.route("/ts/<id>")
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def get_timeseries(id):
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try:
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ts = LTS(id=id)
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except FileNotFoundError:
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abort(404)
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return jsonify({"description": ts.description, "data": ts.data})
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@app.route("/dimensions")
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def list_dimensions():
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with open("data/.index") as fh:
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fcntl.flock(fh, fcntl.LOCK_SH)
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index = json.load(fh)
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# Just return the number of timeseries for each dimension/member, not
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# the timeseries themselves
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for d in index.keys():
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for m in index[d].keys():
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index[d][m] = len(index[d][m])
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return jsonify(index)
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@app.route("/search")
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def search():
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log.debug("search: %s", request.args)
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timeseries = None
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with open("data/.index") as fh:
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fcntl.flock(fh, fcntl.LOCK_SH)
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index = json.load(fh)
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for k, v in request.args.lists():
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log.debug("search: %s -> %s", k, v)
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if timeseries == None:
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timeseries = set()
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log.debug("search: %s: %s", k, index[k])
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for m in v:
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timeseries |= set(index[k][m])
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else:
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filter = set()
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for m in v:
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filter |= set(index[k][m])
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timeseries &= filter
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results = list(timeseries)
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return jsonify(results)
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def verify_node(d):
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node = d["auth"]["node"]
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timestamp = d["auth"]["timestamp"]
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digest1 = d["auth"]["hmac"]
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if "/" in node:
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raise ValueError("invalid node name %s", node)
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try:
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log.info("getting client config from %s", "config/" + node)
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with open("config/" + node) as fh:
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node_conf = json.load(fh)
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except Exception as e:
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log.warning("got %s opening %s", e, "config/" + node)
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abort(401, "unknown client")
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last = node_conf["last"]
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for key in node_conf["keys"]:
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msg = (node + " " + str(timestamp)).encode("UTF-8")
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hmac2 = hmac.new(key.encode("UTF-8"), msg, "SHA256")
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digest2 = hmac2.hexdigest()
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if hmac.compare_digest(digest1, digest2):
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if timestamp > node_conf["last"]:
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node_conf["last"] = timestamp
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os.replace("config/" + node, "config/" + node + ".old")
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with open("config/" + node, "w") as fh:
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json.dump(node_conf, fh) # XXX
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return node
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else:
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abort(409, "timestamp out of sync")
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abort(401, "auth failed")
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@app.get("/v")
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def visualize():
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timeseries_ids = request.args.getlist("ts")
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timeseries_data = []
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for id in timeseries_ids:
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ts = LTS(id=id)
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timeseries_data.append(ts)
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return render_template("visualize.html", ts=timeseries_data)
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