Source: https://dev-docs.nebula-graph.io/v5.3.2/utilities/exchange/config/sources/local/
Documentation version: v5.3.2

# Local source configurations

This topic introduces the configuration options for importing data from a local data source. For information about the complete configuration file and options, see [Data import configurations](https://dev-docs.nebula-graph.io/v5.3.2/utilities/exchange/config/).

## Data source configurations

The following table lists the configuration options specific to the local data source.

 | Option | Description | Type | Required | Default value
 | `type` | The type of the data source. In this case, set the value to `"local"`. | String | Yes | N/A
 | `format` | The file format of the source data. Valid values are: `"csv"`, `"json"`, `"orc"`,and `"parquet"` | String | No | `"csv"`
 | `header` | Whether the CSV file contains a header. This option takes effect only when `format` is set to `"csv"`. | Bool | No | `false`
 | `separator` | The separator used in the CSV file. This option takes effect only when `format` is set to `"csv"`. | String | No | `","`
 | `path` | The path to the source data in a local file system. You can specify the path in the following ways:

- Use the prefix `file://` with an absolute path, such as `"file:///tmp/person.csv"`.
- Use an absolute path, such as `"/tmp/person.csv"`.
- Use a relative path that is relative to the NebulaGraph Exchange JAR file directory, such as `"tmp/person.csv"`.

 | String | Yes | N/A

## Common source configurations

The following configuration options can also be specified as global settings in the section `sourcesCommon` of the configuration file:

- `type`
- `format`
- `header`
- `separator`

Note that the configurations on specific data sources override the global settings.

## Data source configuration example

Local file system source configurations

````
sources: [
  {
    type:"local"
    format:"csv"
    header:false
    separator:","
    path: "file:///tmp/movie.csv"
//    nodetypes: []
//    edgetypes: []
  }
]  

````

## Complete configuration example

Replace `<current-password>` with the current password for the specified account. If the password has changed, use the new password.

````
{
  taskType: import
  nebula: {
    graphAddr: "127.0.0.1:9669"
    graphName: "movie"
    user: "root"
    passwd: "<current-password>"
  }

  error: {
    path: "/tmp/errors"
    maxRecords: 10000
  }

  checkPoint: {
    path: "/tmp/checkpoint"
    resume: false
  } 

  sourcesCommon:{
    type:"local"
    format: "csv"
    header:true
    separator:","
  }

  writeCommon:{
    batchSize: 2000
    enableRealTimeQPSLog: true
    mode: "INSERT IGNORE"
  }

  sources: [
    # node type Actor
    {
      path: "/tmp/import_movie/sub_actor.csv"

      pre_processes: {
          filter: ["birth_date!='\\N'"]
          concatConstant: [
            {
              field: "name"
              prefixValue: "test_"
              suffixValue: ""
            }
          ]
      }

      nodetypes: [
        {
          name: "Actor"
          sourceFields: [people_id,name,birth_date]
          nebulaFields: [id,name,birthDate]
        }
      ]
    }

    # node type Movie
    {
      path: "/tmp/import_movie/sub_movie.csv"
      nodetypes: [
        {
          name: "Movie"
          sourceFields: [movie_id,name]
          nebulaFields: [id,name]
        }
      ]
    }

   # edge type Act
    {
      path: "/tmp/import_movie/sub_actor_act_movie.csv"
      edgetypes: [
        {
          name: "Act"
          sourceKeys: [people_id]
          nebulaSrcKeys: [id]
          targetKeys: [movie_id]
          nebulaDstKeys: [id]
          sourceFields: []
          nebulaFields: []
        }
      ]
    }

  ]
}

````