Fiware CB订阅工作但不可见
我在上下文代理上有一个实体,它具有几个属性(如温度、湿度等)。我有一个MySql数据库,它通过行保存来自该实体的值。所以为了保存这些信息,我必须向天鹅座订阅。这里的问题是信息是预先显示的,但是当我运行命令Fiware CB订阅工作但不可见,fiware,fiware-orion,fiware-cygnus,Fiware,Fiware Orion,Fiware Cygnus,我在上下文代理上有一个实体,它具有几个属性(如温度、湿度等)。我有一个MySql数据库,它通过行保存来自该实体的值。所以为了保存这些信息,我必须向天鹅座订阅。这里的问题是信息是预先显示的,但是当我运行命令(curlhttp://localhost:1026/v2/subscription)我得到了输出:[]就好像订阅了一样。如果我执行命令echo'db.csubs.count()'| mongo orion--quiet它甚至会显示输出0 运行操作系统:Centos 6 我的Orion上下文代理
(curlhttp://localhost:1026/v2/subscription)
我得到了输出:[]
就好像订阅了一样。如果我执行命令echo'db.csubs.count()'| mongo orion--quiet
它甚至会显示输出0
运行操作系统:Centos 6
我的Orion上下文代理版本:0.26.0
Orion作为服务运行:
/usr/bin/contextBroker-port 1026-logDir/var/log/contextBroker-pidpath/var/run/contextBroker/contextBroker.pid-dbhost localhost-db orion-multiservice
所以从第一步开始。假设我没有订阅数据库。我运行命令:
/usr/cygnus/bin/cygnus-flume-ng agent --conf /usr/cygnus/conf/ -f /usr/cygnus/conf/agent_a1.conf -n cygnusagent -Dflume.root.logger=INFO,console
以确保flume代理正在运行
python2.7 SetSubscription.py bus temperature http://188.???.??.???:5050/notify
python脚本是github存储库中提供的fiware figway文件夹中提供的脚本
import requests, json, re
from collections import Counter
import ConfigParser
import io
import sys
CONFIG_FILE = "../config.ini"
NUM_ARG=len(sys.argv)
COMMAND=sys.argv[0]
if NUM_ARG==4:
ENTITY_ID=sys.argv[1]
ENTITY_ATTR=sys.argv[2]
SERVER_URL=sys.argv[3]
else:
print 'Usage: '+COMMAND+' [ENTITY ID] [ATTRIBUTE] [SERVER URL]'
print ' ENTITY ID = Entity you want to watch for changes/updates.'
print ' ATTRIBUTE = Attribute whose change will trigger notifications. In this example script only this attribute will be notified.'
print ' SERVER URL = (Local) Server listening for notifications.Example: http://myserver.domain.com:10000'
print ' It has to be a reachable address:port for the ContextBroker. If you are behind a NAT/Firewall contact your network admin.'
print
sys.exit(2)
# Load the configuration file
with open(CONFIG_FILE,'r+') as f:
sample_config = f.read()
config = ConfigParser.RawConfigParser(allow_no_value=True)
config.readfp(io.BytesIO(sample_config))
CB_HOST=config.get('contextbroker', 'host')
CB_PORT=config.get('contextbroker', 'port')
CB_FIWARE_SERVICE=config.get('contextbroker', 'fiware_service')
CB_AAA=config.get('contextbroker', 'OAuth')
if CB_AAA == "yes":
TOKEN=config.get('user', 'token')
TOKEN_SHOW=TOKEN[1:5]+"**********************************************************************"+TOKEN[-5:]
else:
TOKEN="NULL"
TOKEN_SHOW="NULL"
NODE_ID=config.get('local', 'host_id')
f.close()
CB_URL = "http://"+CB_HOST+":"+CB_PORT
MIN_INTERVAL = "PT5S"
DURATION = "P1M"
ENTITY_TYPE = ""
ENTITY_ATTR_WATCH = ENTITY_ATTR
ENTITY_ATTR_NOTIFY = ENTITY_ATTR
PAYLOAD = '{ \
"entities": [ \
{ \
"type": "'+ENTITY_TYPE+'", \
"isPattern": "false", \
"id": "'+ENTITY_ID+'" \
} \
], \
"attributes": [ \
"'+ENTITY_ATTR_NOTIFY+'" \
], \
"reference": "'+SERVER_URL+'", \
"duration": "'+DURATION+'", \
"notifyConditions": [ \
{ \
"type": "ONCHANGE", \
"condValues": [ \
"'+ENTITY_ATTR_WATCH+'" \
] \
} \
], \
"throttling": "'+MIN_INTERVAL+'" \
}'
HEADERS = {'content-type': 'application/json', 'accept': 'application/json' , 'Fiware-Service': CB_FIWARE_SERVICE ,'X-Auth-Token' : TOKEN}
#HEADERS = {'content-type': 'application/json', 'Fiware-Service': CB_FIWARE_SERVICE ,'X-Auth-Token' : TOKEN}
HEADERS_SHOW = {'content-type': 'application/json', 'accept': 'application/json' , 'Fiware-Service': CB_FIWARE_SERVICE , 'X-Auth-Token' : TOKEN_SHOW}
URL = CB_URL + '/v1/subscribeContext'
print "* Asking to "+URL
print "* Headers: "+str(HEADERS_SHOW)
print "* Sending PAYLOAD: "
print json.dumps(json.loads(PAYLOAD), indent=4)
print
print "..."
r = requests.post(URL, data=PAYLOAD, headers=HEADERS)
print
print "* Status Code: "+str(r.status_code)
print
print r.text
现在,每次我对值进行更改时,该值都会更改,并显示在数据库中
如果您需要更多信息,请随时询问
编辑:
有效负载“请求到”、“头:”和“发送有效负载”:
请注意,您正在多服务模式下运行Orion。因此,实体/属性/订阅由tentant/服务分开,它们完全隔离在MongoDB层的不同数据库中。特别要注意的是,订阅上下文请求使用的是
FiwareService:fiwarefinal
,因此订阅是在“fiwarefinal”服务中创建的(与orion fiwarefinal
DB关联)
因此curlhttp://localhost:1026/v2/subscription
将不显示任何订阅,因为订阅查询在默认租户中解析(与orion
数据库关联)。对于echo'db.csubs.count()'| mongo orion--quiet,这一点与相同。为了获得“fiwarefinal”服务的订阅列表(或以DB为单位),您应该使用:
curl——标题“Fiware服务:fiwarefinal”http://localhost:1026/v2/subscription
echo'db.csubs.count()'| mongo orion fiwarefinal--安静
请注意,如果要删除“fiwarefinal”租户/服务中的订阅,还需要在取消订阅上下文操作中使用Fiware Service:fiwarefinal
请查找和的更多信息。能否在帖子中添加有关“询问”、“标题:”和“发送有效负载”行的脚本输出?谢谢我没有意识到这一点。它解决了“问题”。非常感谢你,费尔明!
* Asking to http://188.???.??.???:1026/v1/subscribeContext
* Headers: {'Fiware-Service': 'fiwarefinal', 'content-type': 'application/json', 'accept': 'application/json', 'X-Auth-Token': 'NULL'}
* Sending PAYLOAD:
{
"reference": "http://localhost:5050/notify",
"throttling": "PT5S",
"entities": [
{
"type": "",
"id": "bus1",
"isPattern": "false"
}
],
"attributes": [
"temperature"
],
"duration": "P1M",
"notifyConditions": [
{
"condValues": [
"temperature"
],
"type": "ONCHANGE"
}
]
}
...
* Status Code: 200
{
"subscribeResponse" : {
"subscriptionId" : "56781c2d071f621a6546e740",
"duration" : "P1M",
"throttling" : "PT5S"
}
}