Home / Documentation / Advanced Usage / Date Attributes

Advanced Usage Tutorials 📖

This tutorial is part of a series to help you learn and perform the advanced functions of zentity. You should complete the basic usage tutorials before completing these advanced usage tutorials.

  1. Matcher Parameters
  2. Date Attributes ← You are here.
  3. Payload Attributes

Date Attributes

Date attributes are useful in many applications of entity resolution. You can resolve a person with the aid of a date of birth, a credit card with a date of expiration, a driver's license with a date of issuance, or an event with a specific timestamp. You can use a date range to disambiguate two people who occupied the same home address at different times, preventing a false match. You can reliably sessionize events in an application log by the client IP address if you match the events within a small time window, knowing that IP addresses can change owners over longer periods of time.

Date matching comes its own challenges. Indices can represent dates and times in different formats and at different levels of precision. Sometimes it makes sense to match within a date or time range rather than a specific point in time. zentity uses date attributes to help surmount these challenges.

The "date" attribute type can be used to match date fields in Elasticsearch. Date attributes use matcher parameters to define the "format" of the date field. A "format" parameter is required to ensure that matchers use the date format that the indexed date field expects. You must understand how matcher parameters work before writing date matchers.

This tutorial will show you how to write a matcher that gives you control over the window of a date range query.

Let's dive in.

Before you start

You must install Elasticsearch, Kibana, and zentity to complete this tutorial. This tutorial was tested with zentity-1.5.0-elasticsearch-7.3.1.

Quick start

You can use the zentity sandbox which has the required software and data for these tutorials. This will let you skip many of the setup steps.

1. Prepare for the tutorial

1.1 Open the Kibana Console UI

The Kibana Console UI makes it easy to submit requests to Elasticsearch and read responses.

1.2 Delete any old tutorial indices

Note: Skip this step if you're using the zentity sandbox.

Let's start from scratch. Delete any tutorial indices you might have created from other tutorials.

DELETE zentity_tutorial_8_*

1.3 Create the tutorial index

Note: Skip this step if you're using the zentity sandbox.

Now create the index for this tutorial.

PUT zentity_tutorial_8_date_attributes
{
  "settings": {
    "index": {
      "number_of_shards": 1,
      "number_of_replicas": 0
    }
  },
  "mappings": {
    "properties": {
      "@timestamp": {
        "type": "date"
      },
      "id": {
        "type": "keyword"
      },
      "ip": {
        "type": "keyword"
      },
      "path": {
        "type": "keyword"
      }
    }
  }
}

1.4 Load the tutorial data

Note: Skip this step if you're using the zentity sandbox.

Add the tutorial data to the index.

POST _bulk?refresh
{"index": {"_id": "1", "_index": "zentity_tutorial_8_date_attributes"}}
{"@timestamp": "2019-02-28T23:01:45.248", "id": "1", "ip": "192.168.0.1", "path": "/"}
{"index": {"_id": "2", "_index": "zentity_tutorial_8_date_attributes"}}
{"@timestamp": "2019-02-28T23:02:05.658", "id": "2", "ip": "192.168.0.1", "path": "/docs"}
{"index": {"_id": "3", "_index": "zentity_tutorial_8_date_attributes"}}
{"@timestamp": "2019-02-28T23:02:08.782", "id": "3", "ip": "192.168.2.1", "path": "/"}
{"index": {"_id": "4", "_index": "zentity_tutorial_8_date_attributes"}}
{"@timestamp": "2019-02-28T23:02:12.024", "id": "4", "ip": "192.168.0.1", "path": "/docs/installation"}
{"index": {"_id": "5", "_index": "zentity_tutorial_8_date_attributes"}}
{"@timestamp": "2019-02-28T23:02:27.745", "id": "5", "ip": "192.168.2.1", "path": "/"}
{"index": {"_id": "6", "_index": "zentity_tutorial_8_date_attributes"}}
{"@timestamp": "2019-02-28T23:02:15.628", "id": "6", "ip": "192.168.0.1", "path": "/releases"}
{"index": {"_id": "7", "_index": "zentity_tutorial_8_date_attributes"}}
{"@timestamp": "2019-02-28T23:14:01.956", "id": "7", "ip": "192.168.0.1", "path": "/docs"}
{"index": {"_id": "8", "_index": "zentity_tutorial_8_date_attributes"}}
{"@timestamp": "2019-02-28T23:14:08.345", "id": "8", "ip": "192.168.3.1", "path": "/"}
{"index": {"_id": "9", "_index": "zentity_tutorial_8_date_attributes"}}
{"@timestamp": "2019-02-28T23:14:08.921", "id": "9", "ip": "192.168.0.1", "path": "/docs/installation"}
{"index": {"_id": "10", "_index": "zentity_tutorial_8_date_attributes"}}
{"@timestamp": "2019-02-28T23:21:00.003", "id": "10", "ip": "192.168.2.1", "path": "/"}
{"index": {"_id": "11", "_index": "zentity_tutorial_8_date_attributes"}}
{"@timestamp": "2019-02-28T23:22:07.565", "id": "11", "ip": "192.168.2.1", "path": "/"}
{"index": {"_id": "12", "_index": "zentity_tutorial_8_date_attributes"}}
{"@timestamp": "2019-02-28T23:28:11.114", "id": "12", "ip": "192.168.0.1", "path": "/docs/basic-usage"}
{"index": {"_id": "13", "_index": "zentity_tutorial_8_date_attributes"}}
{"@timestamp": "2019-02-28T23:30:45.346", "id": "13", "ip": "192.168.3.1", "path": "/docs/releases"}
{"index": {"_id": "14", "_index": "zentity_tutorial_8_date_attributes"}}
{"@timestamp": "2019-03-01T10:30:45.982", "id": "14", "ip": "192.168.4.1", "path": "/"}
{"index": {"_id": "15", "_index": "zentity_tutorial_8_date_attributes"}}
{"@timestamp": "2019-03-02T12:30:45.452", "id": "15", "ip": "192.168.0.1", "path": "/"}
{"index": {"_id": "16", "_index": "zentity_tutorial_8_date_attributes"}}
{"@timestamp": "2019-03-03T14:32:01.837", "id": "16", "ip": "192.168.0.1", "path": "/"}
{"index": {"_id": "17", "_index": "zentity_tutorial_8_date_attributes"}}
{"@timestamp": "2019-03-03T14:32:03.897", "id": "17", "ip": "192.168.0.1", "path": "/releases"}
{"index": {"_id": "18", "_index": "zentity_tutorial_8_date_attributes"}}
{"@timestamp": "2019-03-03T12:33:56.553", "id": "18", "ip": "192.168.0.1", "path": "/docs"}

Here's what the tutorial data looks like.

id timestamp ip path
1 2019-02-28T23:01:45.248 192.168.0.1 /
2 2019-02-28T23:02:05.658 192.168.0.1 /docs
3 2019-02-28T23:02:08.782 192.168.2.1 /
4 2019-02-28T23:02:12.024 192.168.0.1 /docs/installation
5 2019-02-28T23:02:27.745 192.168.2.1 /
6 2019-02-28T23:02:15.628 192.168.0.1 /releases
7 2019-02-28T23:14:01.956 192.168.0.1 /docs
8 2019-02-28T23:14:08.345 192.168.3.1 /
9 2019-02-28T23:14:08.921 192.168.0.1 /docs/installation
10 2019-02-28T23:21:00.003 192.168.2.1 /
11 2019-02-28T23:22:07.565 192.168.2.1 /
12 2019-02-28T23:28:11.114 192.168.0.1 /docs/basic-usage
13 2019-02-28T23:30:45.346 192.168.3.1 /releases
14 2019-03-01T10:30:45.982 192.168.4.1 /
15 2019-03-02T12:30:45.452 192.168.0.1 /
16 2019-03-03T14:32:01.837 192.168.0.1 /
17 2019-03-03T14:32:03.897 192.168.0.1 /releases
18 2019-03-03T12:33:56.553 192.168.0.1 /docs

2. Create the entity model

Note: Skip this step if you're using the zentity sandbox.

Let's use the Models API to create the entity model below. We'll review the matchers in depth.

Request

PUT _zentity/models/zentity_tutorial_8_http_session
{
  "attributes": {
    "timestamp": {
      "type": "date"
    },
    "ip": {
      "type": "string"
    }
  },
  "resolvers": {
    "timestamp_ip": {
      "attributes": [ "timestamp", "ip" ]
    }
  },
  "matchers": {
    "exact": {
      "clause": {
        "term": {
          "{{ field }}": "{{ value }}"
        }
      }
    },
    "time_range": {
      "clause": {
        "range": {
          "{{ field }}": {
            "gte": "{{ value }}||-{{ params.window }}",
            "lte": "{{ value }}||+{{ params.window }}",
            "format": "{{ params.format }}"
          }
        }
      },
      "params": {
        "format": "yyyy-MM-dd'T'HH:mm:ss.SSS",
        "window": "15m"
      }
    }
  },
  "indices": {
    "zentity_tutorial_8_date_attributes": {
      "fields": {
        "@timestamp": {
          "attribute": "timestamp",
          "matcher": "time_range"
        },
        "ip": {
          "attribute": "ip",
          "matcher": "exact"
        }
      }
    }
  }
}

2.1 Review the matchers

We defined two matchers called "exact" and "time_range". The "exact" matcher is used to match the IP address.

Let's focus on the "time_range" matcher. Our matcher uses a range query with date math to match documents within a given time window.

Here is an example of a range query with date math as shown in the documentation:

Example Range Query with Date Math

GET _search
{
  "query": {
    "range" : {
      "date" : {
        "gte": "now-1d/d",
        "lt":  "now/d"
      }
    }
  }
}

Here is how we adapted that range query and added the parameters in our "time_range" matcher. Notice that it includes the "format" parameter that date attributes require, and a "window" parameter to control the time window of the range query.

{
  "matchers": {
    "time_range": {
      "clause": {
        "range": {
          "{{ field }}": {
            "gte": "{{ value }}||-{{ params.window }}",
            "lte": "{{ value }}||+{{ params.window }}",
            "format": "{{ params.format }}"
          }
        }
      },
      "params": {
        "format": "yyyy-MM-dd'T'HH:mm:ss.SSS",
        "window": "15m"
      }
    }
  }
}

3. Resolve an entity

Let's use the Resolution API to resolve a web traffic session with a known IP address at a given timestamp.

Submit a resolution job with the "window" parameter set to its default value, which we defined as "15m" in the matcher.

Request

POST _zentity/resolution/zentity_tutorial_8_http_session?pretty&_source=false&_explanation=true
{
  "attributes": {
    "ip": [ "192.168.0.1" ],
    "timestamp": [ "2019-02-28T23:02:15.628" ]
  }
}

Response

{
  "took" : 26,
  "hits" : {
    "total" : 7,
    "hits" : [ {
      "_index" : "zentity_tutorial_8_date_attributes",
      "_type" : "_doc",
      "_id" : "1",
      "_hop" : 0,
      "_query" : 0,
      "_attributes" : {
        "ip" : [ "192.168.0.1" ],
        "timestamp" : [ "2019-02-28T23:01:45.248" ]
      },
      "_explanation" : {
        "resolvers" : {
          "timestamp_ip" : {
            "attributes" : [ "ip", "timestamp" ]
          }
        },
        "matches" : [ {
          "attribute" : "ip",
          "target_field" : "ip",
          "target_value" : "192.168.0.1",
          "input_value" : "192.168.0.1",
          "input_matcher" : "exact",
          "input_matcher_params" : { }
        }, {
          "attribute" : "timestamp",
          "target_field" : "@timestamp",
          "target_value" : "2019-02-28T23:01:45.248",
          "input_value" : "2019-02-28T23:02:15.628",
          "input_matcher" : "time_range",
          "input_matcher_params" : { }
        } ]
      }
    }, {
      "_index" : "zentity_tutorial_8_date_attributes",
      "_type" : "_doc",
      "_id" : "2",
      "_hop" : 0,
      "_query" : 0,
      "_attributes" : {
        "ip" : [ "192.168.0.1" ],
        "timestamp" : [ "2019-02-28T23:02:05.658" ]
      },
      "_explanation" : {
        "resolvers" : {
          "timestamp_ip" : {
            "attributes" : [ "ip", "timestamp" ]
          }
        },
        "matches" : [ {
          "attribute" : "ip",
          "target_field" : "ip",
          "target_value" : "192.168.0.1",
          "input_value" : "192.168.0.1",
          "input_matcher" : "exact",
          "input_matcher_params" : { }
        }, {
          "attribute" : "timestamp",
          "target_field" : "@timestamp",
          "target_value" : "2019-02-28T23:02:05.658",
          "input_value" : "2019-02-28T23:02:15.628",
          "input_matcher" : "time_range",
          "input_matcher_params" : { }
        } ]
      }
    }, {
      "_index" : "zentity_tutorial_8_date_attributes",
      "_type" : "_doc",
      "_id" : "4",
      "_hop" : 0,
      "_query" : 0,
      "_attributes" : {
        "ip" : [ "192.168.0.1" ],
        "timestamp" : [ "2019-02-28T23:02:12.024" ]
      },
      "_explanation" : {
        "resolvers" : {
          "timestamp_ip" : {
            "attributes" : [ "ip", "timestamp" ]
          }
        },
        "matches" : [ {
          "attribute" : "ip",
          "target_field" : "ip",
          "target_value" : "192.168.0.1",
          "input_value" : "192.168.0.1",
          "input_matcher" : "exact",
          "input_matcher_params" : { }
        }, {
          "attribute" : "timestamp",
          "target_field" : "@timestamp",
          "target_value" : "2019-02-28T23:02:12.024",
          "input_value" : "2019-02-28T23:02:15.628",
          "input_matcher" : "time_range",
          "input_matcher_params" : { }
        } ]
      }
    }, {
      "_index" : "zentity_tutorial_8_date_attributes",
      "_type" : "_doc",
      "_id" : "6",
      "_hop" : 0,
      "_query" : 0,
      "_attributes" : {
        "ip" : [ "192.168.0.1" ],
        "timestamp" : [ "2019-02-28T23:02:15.628" ]
      },
      "_explanation" : {
        "resolvers" : {
          "timestamp_ip" : {
            "attributes" : [ "ip", "timestamp" ]
          }
        },
        "matches" : [ {
          "attribute" : "ip",
          "target_field" : "ip",
          "target_value" : "192.168.0.1",
          "input_value" : "192.168.0.1",
          "input_matcher" : "exact",
          "input_matcher_params" : { }
        }, {
          "attribute" : "timestamp",
          "target_field" : "@timestamp",
          "target_value" : "2019-02-28T23:02:15.628",
          "input_value" : "2019-02-28T23:02:15.628",
          "input_matcher" : "time_range",
          "input_matcher_params" : { }
        } ]
      }
    }, {
      "_index" : "zentity_tutorial_8_date_attributes",
      "_type" : "_doc",
      "_id" : "7",
      "_hop" : 0,
      "_query" : 0,
      "_attributes" : {
        "ip" : [ "192.168.0.1" ],
        "timestamp" : [ "2019-02-28T23:14:01.956" ]
      },
      "_explanation" : {
        "resolvers" : {
          "timestamp_ip" : {
            "attributes" : [ "ip", "timestamp" ]
          }
        },
        "matches" : [ {
          "attribute" : "ip",
          "target_field" : "ip",
          "target_value" : "192.168.0.1",
          "input_value" : "192.168.0.1",
          "input_matcher" : "exact",
          "input_matcher_params" : { }
        }, {
          "attribute" : "timestamp",
          "target_field" : "@timestamp",
          "target_value" : "2019-02-28T23:14:01.956",
          "input_value" : "2019-02-28T23:02:15.628",
          "input_matcher" : "time_range",
          "input_matcher_params" : { }
        } ]
      }
    }, {
      "_index" : "zentity_tutorial_8_date_attributes",
      "_type" : "_doc",
      "_id" : "9",
      "_hop" : 0,
      "_query" : 0,
      "_attributes" : {
        "ip" : [ "192.168.0.1" ],
        "timestamp" : [ "2019-02-28T23:14:08.921" ]
      },
      "_explanation" : {
        "resolvers" : {
          "timestamp_ip" : {
            "attributes" : [ "ip", "timestamp" ]
          }
        },
        "matches" : [ {
          "attribute" : "ip",
          "target_field" : "ip",
          "target_value" : "192.168.0.1",
          "input_value" : "192.168.0.1",
          "input_matcher" : "exact",
          "input_matcher_params" : { }
        }, {
          "attribute" : "timestamp",
          "target_field" : "@timestamp",
          "target_value" : "2019-02-28T23:14:08.921",
          "input_value" : "2019-02-28T23:02:15.628",
          "input_matcher" : "time_range",
          "input_matcher_params" : { }
        } ]
      }
    }, {
      "_index" : "zentity_tutorial_8_date_attributes",
      "_type" : "_doc",
      "_id" : "12",
      "_hop" : 1,
      "_query" : 0,
      "_attributes" : {
        "ip" : [ "192.168.0.1" ],
        "timestamp" : [ "2019-02-28T23:28:11.114" ]
      },
      "_explanation" : {
        "resolvers" : {
          "timestamp_ip" : {
            "attributes" : [ "ip", "timestamp" ]
          }
        },
        "matches" : [ {
          "attribute" : "ip",
          "target_field" : "ip",
          "target_value" : "192.168.0.1",
          "input_value" : "192.168.0.1",
          "input_matcher" : "exact",
          "input_matcher_params" : { }
        }, {
          "attribute" : "timestamp",
          "target_field" : "@timestamp",
          "target_value" : "2019-02-28T23:28:11.114",
          "input_value" : "2019-02-28T23:14:01.956",
          "input_matcher" : "time_range",
          "input_matcher_params" : { }
        }, {
          "attribute" : "timestamp",
          "target_field" : "@timestamp",
          "target_value" : "2019-02-28T23:28:11.114",
          "input_value" : "2019-02-28T23:14:08.921",
          "input_matcher" : "time_range",
          "input_matcher_params" : { }
        } ]
      }
    } ]
  }
}

Notice how the document with an "_id" of "12" has a timestamp that is greater than 15 minutes from the timestamp of our input, even though our default "window" parameter is "15m". That is because the timestamp of that document was within 15 minutes of another document that was within 15 minutes of the initial results, which was the document with an "_id" of "9". The "window" parameter limits the time range of each hop, not the time range of the entire resolution job. It is entirely possible to chain together many documents over a long time range where each pair of documents must match within a much smaller time range.

Now let's expand the "window" parameter from "15m" to "2d".

Request

POST _zentity/resolution/zentity_tutorial_8_http_session?pretty&_source=false&_explanation=true
{
  "attributes": {
    "ip": [ "192.168.0.1" ],
    "timestamp": {
      "values": [ "2019-02-28T23:02:15.628" ],
      "params": {
        "window": "2d"
      }
    }
  }
}

Response

{
  "took" : 25,
  "hits" : {
    "total" : 11,
    "hits" : [ {
      "_index" : "zentity_tutorial_8_date_attributes",
      "_type" : "_doc",
      "_id" : "1",
      "_hop" : 0,
      "_query" : 0,
      "_attributes" : {
        "ip" : [ "192.168.0.1" ],
        "timestamp" : [ "2019-02-28T23:01:45.248" ]
      },
      "_explanation" : {
        "resolvers" : {
          "timestamp_ip" : {
            "attributes" : [ "ip", "timestamp" ]
          }
        },
        "matches" : [ {
          "attribute" : "ip",
          "target_field" : "ip",
          "target_value" : "192.168.0.1",
          "input_value" : "192.168.0.1",
          "input_matcher" : "exact",
          "input_matcher_params" : { }
        }, {
          "attribute" : "timestamp",
          "target_field" : "@timestamp",
          "target_value" : "2019-02-28T23:01:45.248",
          "input_value" : "2019-02-28T23:02:15.628",
          "input_matcher" : "time_range",
          "input_matcher_params" : {
            "window" : "2d"
          }
        } ]
      }
    }, {
      "_index" : "zentity_tutorial_8_date_attributes",
      "_type" : "_doc",
      "_id" : "2",
      "_hop" : 0,
      "_query" : 0,
      "_attributes" : {
        "ip" : [ "192.168.0.1" ],
        "timestamp" : [ "2019-02-28T23:02:05.658" ]
      },
      "_explanation" : {
        "resolvers" : {
          "timestamp_ip" : {
            "attributes" : [ "ip", "timestamp" ]
          }
        },
        "matches" : [ {
          "attribute" : "ip",
          "target_field" : "ip",
          "target_value" : "192.168.0.1",
          "input_value" : "192.168.0.1",
          "input_matcher" : "exact",
          "input_matcher_params" : { }
        }, {
          "attribute" : "timestamp",
          "target_field" : "@timestamp",
          "target_value" : "2019-02-28T23:02:05.658",
          "input_value" : "2019-02-28T23:02:15.628",
          "input_matcher" : "time_range",
          "input_matcher_params" : {
            "window" : "2d"
          }
        } ]
      }
    }, {
      "_index" : "zentity_tutorial_8_date_attributes",
      "_type" : "_doc",
      "_id" : "4",
      "_hop" : 0,
      "_query" : 0,
      "_attributes" : {
        "ip" : [ "192.168.0.1" ],
        "timestamp" : [ "2019-02-28T23:02:12.024" ]
      },
      "_explanation" : {
        "resolvers" : {
          "timestamp_ip" : {
            "attributes" : [ "ip", "timestamp" ]
          }
        },
        "matches" : [ {
          "attribute" : "ip",
          "target_field" : "ip",
          "target_value" : "192.168.0.1",
          "input_value" : "192.168.0.1",
          "input_matcher" : "exact",
          "input_matcher_params" : { }
        }, {
          "attribute" : "timestamp",
          "target_field" : "@timestamp",
          "target_value" : "2019-02-28T23:02:12.024",
          "input_value" : "2019-02-28T23:02:15.628",
          "input_matcher" : "time_range",
          "input_matcher_params" : {
            "window" : "2d"
          }
        } ]
      }
    }, {
      "_index" : "zentity_tutorial_8_date_attributes",
      "_type" : "_doc",
      "_id" : "6",
      "_hop" : 0,
      "_query" : 0,
      "_attributes" : {
        "ip" : [ "192.168.0.1" ],
        "timestamp" : [ "2019-02-28T23:02:15.628" ]
      },
      "_explanation" : {
        "resolvers" : {
          "timestamp_ip" : {
            "attributes" : [ "ip", "timestamp" ]
          }
        },
        "matches" : [ {
          "attribute" : "ip",
          "target_field" : "ip",
          "target_value" : "192.168.0.1",
          "input_value" : "192.168.0.1",
          "input_matcher" : "exact",
          "input_matcher_params" : { }
        }, {
          "attribute" : "timestamp",
          "target_field" : "@timestamp",
          "target_value" : "2019-02-28T23:02:15.628",
          "input_value" : "2019-02-28T23:02:15.628",
          "input_matcher" : "time_range",
          "input_matcher_params" : {
            "window" : "2d"
          }
        } ]
      }
    }, {
      "_index" : "zentity_tutorial_8_date_attributes",
      "_type" : "_doc",
      "_id" : "7",
      "_hop" : 0,
      "_query" : 0,
      "_attributes" : {
        "ip" : [ "192.168.0.1" ],
        "timestamp" : [ "2019-02-28T23:14:01.956" ]
      },
      "_explanation" : {
        "resolvers" : {
          "timestamp_ip" : {
            "attributes" : [ "ip", "timestamp" ]
          }
        },
        "matches" : [ {
          "attribute" : "ip",
          "target_field" : "ip",
          "target_value" : "192.168.0.1",
          "input_value" : "192.168.0.1",
          "input_matcher" : "exact",
          "input_matcher_params" : { }
        }, {
          "attribute" : "timestamp",
          "target_field" : "@timestamp",
          "target_value" : "2019-02-28T23:14:01.956",
          "input_value" : "2019-02-28T23:02:15.628",
          "input_matcher" : "time_range",
          "input_matcher_params" : {
            "window" : "2d"
          }
        } ]
      }
    }, {
      "_index" : "zentity_tutorial_8_date_attributes",
      "_type" : "_doc",
      "_id" : "9",
      "_hop" : 0,
      "_query" : 0,
      "_attributes" : {
        "ip" : [ "192.168.0.1" ],
        "timestamp" : [ "2019-02-28T23:14:08.921" ]
      },
      "_explanation" : {
        "resolvers" : {
          "timestamp_ip" : {
            "attributes" : [ "ip", "timestamp" ]
          }
        },
        "matches" : [ {
          "attribute" : "ip",
          "target_field" : "ip",
          "target_value" : "192.168.0.1",
          "input_value" : "192.168.0.1",
          "input_matcher" : "exact",
          "input_matcher_params" : { }
        }, {
          "attribute" : "timestamp",
          "target_field" : "@timestamp",
          "target_value" : "2019-02-28T23:14:08.921",
          "input_value" : "2019-02-28T23:02:15.628",
          "input_matcher" : "time_range",
          "input_matcher_params" : {
            "window" : "2d"
          }
        } ]
      }
    }, {
      "_index" : "zentity_tutorial_8_date_attributes",
      "_type" : "_doc",
      "_id" : "12",
      "_hop" : 0,
      "_query" : 0,
      "_attributes" : {
        "ip" : [ "192.168.0.1" ],
        "timestamp" : [ "2019-02-28T23:28:11.114" ]
      },
      "_explanation" : {
        "resolvers" : {
          "timestamp_ip" : {
            "attributes" : [ "ip", "timestamp" ]
          }
        },
        "matches" : [ {
          "attribute" : "ip",
          "target_field" : "ip",
          "target_value" : "192.168.0.1",
          "input_value" : "192.168.0.1",
          "input_matcher" : "exact",
          "input_matcher_params" : { }
        }, {
          "attribute" : "timestamp",
          "target_field" : "@timestamp",
          "target_value" : "2019-02-28T23:28:11.114",
          "input_value" : "2019-02-28T23:02:15.628",
          "input_matcher" : "time_range",
          "input_matcher_params" : {
            "window" : "2d"
          }
        } ]
      }
    }, {
      "_index" : "zentity_tutorial_8_date_attributes",
      "_type" : "_doc",
      "_id" : "15",
      "_hop" : 0,
      "_query" : 0,
      "_attributes" : {
        "ip" : [ "192.168.0.1" ],
        "timestamp" : [ "2019-03-02T12:30:45.452" ]
      },
      "_explanation" : {
        "resolvers" : {
          "timestamp_ip" : {
            "attributes" : [ "ip", "timestamp" ]
          }
        },
        "matches" : [ {
          "attribute" : "ip",
          "target_field" : "ip",
          "target_value" : "192.168.0.1",
          "input_value" : "192.168.0.1",
          "input_matcher" : "exact",
          "input_matcher_params" : { }
        }, {
          "attribute" : "timestamp",
          "target_field" : "@timestamp",
          "target_value" : "2019-03-02T12:30:45.452",
          "input_value" : "2019-02-28T23:02:15.628",
          "input_matcher" : "time_range",
          "input_matcher_params" : {
            "window" : "2d"
          }
        } ]
      }
    }, {
      "_index" : "zentity_tutorial_8_date_attributes",
      "_type" : "_doc",
      "_id" : "16",
      "_hop" : 1,
      "_query" : 0,
      "_attributes" : {
        "ip" : [ "192.168.0.1" ],
        "timestamp" : [ "2019-03-03T14:32:01.837" ]
      },
      "_explanation" : {
        "resolvers" : {
          "timestamp_ip" : {
            "attributes" : [ "ip", "timestamp" ]
          }
        },
        "matches" : [ {
          "attribute" : "ip",
          "target_field" : "ip",
          "target_value" : "192.168.0.1",
          "input_value" : "192.168.0.1",
          "input_matcher" : "exact",
          "input_matcher_params" : { }
        }, {
          "attribute" : "timestamp",
          "target_field" : "@timestamp",
          "target_value" : "2019-03-03T14:32:01.837",
          "input_value" : "2019-03-02T12:30:45.452",
          "input_matcher" : "time_range",
          "input_matcher_params" : {
            "window" : "2d"
          }
        } ]
      }
    }, {
      "_index" : "zentity_tutorial_8_date_attributes",
      "_type" : "_doc",
      "_id" : "17",
      "_hop" : 1,
      "_query" : 0,
      "_attributes" : {
        "ip" : [ "192.168.0.1" ],
        "timestamp" : [ "2019-03-03T14:32:03.897" ]
      },
      "_explanation" : {
        "resolvers" : {
          "timestamp_ip" : {
            "attributes" : [ "ip", "timestamp" ]
          }
        },
        "matches" : [ {
          "attribute" : "ip",
          "target_field" : "ip",
          "target_value" : "192.168.0.1",
          "input_value" : "192.168.0.1",
          "input_matcher" : "exact",
          "input_matcher_params" : { }
        }, {
          "attribute" : "timestamp",
          "target_field" : "@timestamp",
          "target_value" : "2019-03-03T14:32:03.897",
          "input_value" : "2019-03-02T12:30:45.452",
          "input_matcher" : "time_range",
          "input_matcher_params" : {
            "window" : "2d"
          }
        } ]
      }
    }, {
      "_index" : "zentity_tutorial_8_date_attributes",
      "_type" : "_doc",
      "_id" : "18",
      "_hop" : 1,
      "_query" : 0,
      "_attributes" : {
        "ip" : [ "192.168.0.1" ],
        "timestamp" : [ "2019-03-03T12:33:56.553" ]
      },
      "_explanation" : {
        "resolvers" : {
          "timestamp_ip" : {
            "attributes" : [ "ip", "timestamp" ]
          }
        },
        "matches" : [ {
          "attribute" : "ip",
          "target_field" : "ip",
          "target_value" : "192.168.0.1",
          "input_value" : "192.168.0.1",
          "input_matcher" : "exact",
          "input_matcher_params" : { }
        }, {
          "attribute" : "timestamp",
          "target_field" : "@timestamp",
          "target_value" : "2019-03-03T12:33:56.553",
          "input_value" : "2019-03-02T12:30:45.452",
          "input_matcher" : "time_range",
          "input_matcher_params" : {
            "window" : "2d"
          }
        } ]
      }
    } ]
  }
}

Expanding the time range allowed us to return four more documents that appeared several days after the other documents.

What if we contracted the "window" parameter to a small value such as "2m"? Let's find out.

Request

POST _zentity/resolution/zentity_tutorial_8_http_session?pretty&_source=false&_explanation=true
{
  "attributes": {
    "ip": [ "192.168.0.1" ],
    "timestamp": {
      "values": [ "2019-02-28T23:02:15.628" ],
      "params": {
        "window": "2m"
      }
    }
  }
}

Response

{
  "took" : 8,
  "hits" : {
    "total" : 4,
    "hits" : [ {
      "_index" : "zentity_tutorial_8_date_attributes",
      "_type" : "_doc",
      "_id" : "1",
      "_hop" : 0,
      "_query" : 0,
      "_attributes" : {
        "ip" : [ "192.168.0.1" ],
        "timestamp" : [ "2019-02-28T23:01:45.248" ]
      },
      "_explanation" : {
        "resolvers" : {
          "timestamp_ip" : {
            "attributes" : [ "ip", "timestamp" ]
          }
        },
        "matches" : [ {
          "attribute" : "ip",
          "target_field" : "ip",
          "target_value" : "192.168.0.1",
          "input_value" : "192.168.0.1",
          "input_matcher" : "exact",
          "input_matcher_params" : { }
        }, {
          "attribute" : "timestamp",
          "target_field" : "@timestamp",
          "target_value" : "2019-02-28T23:01:45.248",
          "input_value" : "2019-02-28T23:02:15.628",
          "input_matcher" : "time_range",
          "input_matcher_params" : {
            "window" : "2m"
          }
        } ]
      }
    }, {
      "_index" : "zentity_tutorial_8_date_attributes",
      "_type" : "_doc",
      "_id" : "2",
      "_hop" : 0,
      "_query" : 0,
      "_attributes" : {
        "ip" : [ "192.168.0.1" ],
        "timestamp" : [ "2019-02-28T23:02:05.658" ]
      },
      "_explanation" : {
        "resolvers" : {
          "timestamp_ip" : {
            "attributes" : [ "ip", "timestamp" ]
          }
        },
        "matches" : [ {
          "attribute" : "ip",
          "target_field" : "ip",
          "target_value" : "192.168.0.1",
          "input_value" : "192.168.0.1",
          "input_matcher" : "exact",
          "input_matcher_params" : { }
        }, {
          "attribute" : "timestamp",
          "target_field" : "@timestamp",
          "target_value" : "2019-02-28T23:02:05.658",
          "input_value" : "2019-02-28T23:02:15.628",
          "input_matcher" : "time_range",
          "input_matcher_params" : {
            "window" : "2m"
          }
        } ]
      }
    }, {
      "_index" : "zentity_tutorial_8_date_attributes",
      "_type" : "_doc",
      "_id" : "4",
      "_hop" : 0,
      "_query" : 0,
      "_attributes" : {
        "ip" : [ "192.168.0.1" ],
        "timestamp" : [ "2019-02-28T23:02:12.024" ]
      },
      "_explanation" : {
        "resolvers" : {
          "timestamp_ip" : {
            "attributes" : [ "ip", "timestamp" ]
          }
        },
        "matches" : [ {
          "attribute" : "ip",
          "target_field" : "ip",
          "target_value" : "192.168.0.1",
          "input_value" : "192.168.0.1",
          "input_matcher" : "exact",
          "input_matcher_params" : { }
        }, {
          "attribute" : "timestamp",
          "target_field" : "@timestamp",
          "target_value" : "2019-02-28T23:02:12.024",
          "input_value" : "2019-02-28T23:02:15.628",
          "input_matcher" : "time_range",
          "input_matcher_params" : {
            "window" : "2m"
          }
        } ]
      }
    }, {
      "_index" : "zentity_tutorial_8_date_attributes",
      "_type" : "_doc",
      "_id" : "6",
      "_hop" : 0,
      "_query" : 0,
      "_attributes" : {
        "ip" : [ "192.168.0.1" ],
        "timestamp" : [ "2019-02-28T23:02:15.628" ]
      },
      "_explanation" : {
        "resolvers" : {
          "timestamp_ip" : {
            "attributes" : [ "ip", "timestamp" ]
          }
        },
        "matches" : [ {
          "attribute" : "ip",
          "target_field" : "ip",
          "target_value" : "192.168.0.1",
          "input_value" : "192.168.0.1",
          "input_matcher" : "exact",
          "input_matcher_params" : { }
        }, {
          "attribute" : "timestamp",
          "target_field" : "@timestamp",
          "target_value" : "2019-02-28T23:02:15.628",
          "input_value" : "2019-02-28T23:02:15.628",
          "input_matcher" : "time_range",
          "input_matcher_params" : {
            "window" : "2m"
          }
        } ]
      }
    } ]
  }
}

This returned four results over two hops. The first result matched one document whose timestamp was within two minutes of our input, and the remaining documents had timestamps that were within two minutes of the first result.

Conclusion

You learned about date attributes and how to write a matcher that matches dates within an arbitrary window of time.

 


Continue Reading

Matcher Parameters Payload Attributes
© 2018 Dave Moore.
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