Describe Rule

It has two services :-

1. Get All rules

2. Get Rule by ID

Get All Rules

This service is used to get all the rules created by a tenant.

Following is the URL for describing all rules in CEP :-

GET http://<domain name>/cep/v2.0/rules

Following is the sample output body json for get CEP rules :-

 [
{
              "ruleName": "AggregationSlidingRule1",
              "selectClause": "sum(s1.temp) as sumtemp",
              "whereClause": "sumtemp > 40",
              "groupByField": "sensor",
              "triggerInterval": "1",
              "windowDuration": "60",
              "slidingDuration": "30",
              "input": [{
                      "alias": "s1",
                      "topic": "test1",
                      "properties": [
                              "temp"
                      ]
              }],
              "output": "outputaggre1"
      },
      {
              "ruleName": "SmartHomeRule2",
              "selectClause": "s1.securityStatus as securityStatus,s2.kitchentemp as kitchentemp,s3.homeactemp as homeactemp,s1.feature as feature,s1.starttime as s1time,s2.starttime as s2time,s3.starttime as s3time",
              "whereClause": "securityStatus=='LOCKED' AND (kitchentemp - homeactemp) > 20",
              "joinClause": "(s1.feature = s2.feature) AND abs(s1.starttime - s2.starttime) <= 30,(s2.feature = s3.feature) AND abs(s2.starttime - s3.starttime) <= 30",
              "groupByField": "feature",
              "triggerInterval": "60",
              "input": [{
                              "alias": "s1",
                              "topic": "test1",
                              "properties": [
                                      "securityStatus"
                              ]
                      },
                      {
                              "alias": "s2",
                              "topic": "test2",
                              "properties": [
                                      "kitchentemp"
                              ]
                      },
                      {
                              "alias": "s3",
                              "topic": "test3",
                              "properties": [
                                      "homeactemp"
                              ]
                      }
              ],
              "output": "outputjoin3"
      }
      ]

Get Rule by ID

This service is used to get a particular routing rule with it’s rule id created by a tenant.

Following is the URL for describing a rule by ID in CEP :-

GET http://<domain name>/cep/v2.0/rules/{ruleId}

Following is the sample output body json for get CEP rule by ID :-

{
     "ruleName": "JoiningSample1",
     "selectClause": "s1.temp as currtemp,s2.humidity as currhumidity,s1.feature as feature,s1.starttime as s1time,s2.starttime as s2time",
     "whereClause": "currtemp > 20 AND currhumidity > 80",
     "joinClause": "(s1.feature = s2.feature) AND abs(s1.starttime - s2.starttime) <= 30",
     "groupByField": "feature",
     "triggerInterval": "30",
     "input": [{
                     "alias": "s1",
                     "topic": "test1",
                     "properties": [
                             "temp"
                     ]
             },
             {
                     "alias": "s2",
                     "topic": "test2",
                     "properties": [
                             "humidity"
                     ]
             }
     ],
     "output": "outputjoin4"
}