Question

我有一个CSV文件，其中包含WKT格式的几何图形。我试图使用CSV文件提取geo_shape数据。我创建了文件“ input_mapping.json”中给出的映射

{
   "mappings" : {
      "doc" : {
        "properties" : {
          "Lot" : {
            "type" : "long"
          },
          "Lot_plan" : {
            "type" : "text",
            "fields" : {
              "keyword" : {
                "type" : "keyword",
                "ignore_above" : 256
              }
            }
          },
          "Parcel_Address_Line_1" : {
            "type" : "text",
            "fields" : {
              "keyword" : {
                "type" : "keyword",
                "ignore_above" : 256
              }
            }
          },
          "Plan" : {
            "type" : "long"
          },
          "Tenure" : {
            "type" : "text",
            "fields" : {
              "keyword" : {
                "type" : "keyword",
                "ignore_above" : 256
              }
            }
          },
          "WKT" : {
            "type" : "geo_shape"
          }
        }
      }
    }
}

WKT是我的geo_shape，它是WKT（String）格式。以下是我尝试使用logstash插入的输入CSV文件：

WKT,Lot_plan,Tenure,Parcel_Address_Line_1,Lot,Plan
"POLYGON ((148.41503356 -26.62829003,148.44798048 -26.62800857,148.45234634 -26.63457929,148.45507096 -26.64778132,148.41735984 -26.64808729,148.41514107 -26.64091476,148.41503356 -26.62829003))",21MM1,FH,MASSEY DOWNS,21,1
"POLYGON ((148.45507096 -26.64778132,148.45779641 -26.66098396,148.45859297 -26.66259081,148.45801376 -26.66410383,148.45989472 -26.67278979,148.42510081 -26.67310328,148.42434355 -26.67065659,148.41735984 -26.64808729,148.45507096 -26.64778132))",21MM2,FH,,21,2
"POLYGON ((148.39514404 -26.68791317,148.37228669 -26.68894235,148.37188338 -26.68895271,148.37092744 -26.68897445,148.37051869 -26.68898023,148.36312088 -26.68908468,148.36261958 -26.66909425,148.39598678 -26.66869309,148.39584372 -26.66934742,148.39583604 -26.66968184,148.39590526 -26.67007957,148.39598629 -26.67039933,148.39614586 -26.67085156,148.39625052 -26.67085085,148.42434355 -26.67065659,148.42510081 -26.67310328,148.42537156 -26.67397795,148.42549108 -26.68541445,148.41781484 -26.68547248,148.39988482 -26.68562107,148.39966009 -26.68562292,148.39704234 -26.68564442,148.39514404 -26.68791317))",21MM3,LL,DERWENT PARK,21,3

我的logstash conf文件是：

input{
file{
        path=>"D:/input.csv"        
        start_position=>"beginning"
        sincedb_path=>"D:/sample.text"

    }
}                                   
filter{
csv{
        separator =>"," 
        columns =>["WKT","Lot_plan","Tenure","Parcel_Address_Line_1","Lot","Plan"]
        skip_header=>true
        skip_empty_columns=>true
        convert => {
          "Lot" => "integer"
          "Plan" => "integer"                                 
        }
        remove_field =>[ "_source","message","host","path","@version","@timestamp"  ]


}

}
output{
    elasticsearch{
        hosts=>"http://localhost:9701" 
        index=>"input_mapping"
        template =>"D:/input_mapping.json"
        template_name => "input_mapping"
        manage_template => true
    }
}

由于某种原因，它没有被摄入ElasticSearch中。我正在使用ElasticSearch 6.5.4版和logstash 6.5.4版。请让我知道我是否错过了任何事情。

Answer 1

我意识到会有很多其他开发人员正在寻找与我所遇到的类似的问题。稍后，我检查了提供ElasticSearch摄取的GDAL（ogr2ogr）。另外，我使用PostgreSQL提取CSV文件。因此，使用ogr2ogr工具可以通过以下步骤为我提供帮助：

首先在PostgreSQL中提取我的CSV文件，然后在其中将WKT用作表中的文本列。
在表中创建另一列，并使用ST_GeomFromText函数更新此列。

更新TableName设置为WKT_GEOM = ST_GeomFromText（“ WKT”，4632）

（注意：我已经在PostgreSQL中安装了postgis）
现在我开始我的ElasticSearch。
按照提供的示例使用ogr2ogr：

a。首先使用ogr2ogr创建elasticsearch映射。

b。现在将数据从PostgreSQL提取到ElasticSearch。

https://gdal.org/drivers/vector/elasticsearch.html

通过这种方式，我能够在Elasticsearch中执行地理查询。但是不幸的是它没有logstash。 :(

如有疑问，请发表评论。

使用Logstash将Geo_shape添加到Elasticsearch

1 个答案: