falcon + url 获得json 数值画图并报警

2024-06-28 16:00:32

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有这么个需求，一个api可以获得当前设备的在线总数，如果少于某个数值，那么就得报警。

想来想去，接入falcon还是非常不错的。

首先我们需要一个脚本，可以获取api返回的json串，把数值挖出来，画图然后报警。

脚本

#!/usr/bin/env python#coding: utf8import sysimport jsonimport requestsimport timeimport urllib2, base64# 获取数据r = requests.get('http://xx/ss')r2 = json.loads(r.text)value = r2['online']['total']# 准备上报数据p = []endpoint = "10.0.2.90"metric = "yw"key = "onlinetotal"timestamp = int(time.time())step = 60vtype = "GAUGE"tags = ''i = { 'Metric' :'%s.%s'%(metric,key), 'Endpoint': endpoint, 'Timestamp': timestamp, 'Step': step, 'value': value, 'CounterType': vtype, 'TAGS': tags }p.append(i)PRint json.dumps(p, sort_keys=True,indent = 4)sys.exit(0)# 上报method = "POST"handler = urllib2.HTTPhandler()opener = urllib2.build_opener(handler)url = "http://127.0.0.1:1988/v1/push"request = urllib2.Request(url, data=json.dumps(p))request.add_header('Content-Type','application/json')request.get_method = lambda: methodtry: connection = opener.open(request)except urllib2.HTTPError,e: connection = eif connection.code == 200: print connection.read()else: print '{"err":1,"msg":"%s"}' % connection