ductile

Elasticsearch Bulk Loader for quick export/import of bulk formatted data.

Install

$ npm install -g ductile

Usage

Export

$ ./ductile export --help
 
 Usage: ductile export [options] <url>
 
Options:
  --help           Show help  [boolean]
  -d, --delete     output delete operations  [boolean] [default: false]
  -q, --query      file with json query  [string]
  -t, --transform  file with transform function  [string]

Export with Index/Type in the URL

The data to export is narrow by specifying the index, and optionally the type in the URL.

Alias

The exported bulk items always retain their original index name even if exported using an index alias in the URL. To alter the index (or type, you must use a transform.

Import

$ ./ductile import --help
 
 Usage: ductile import [options] <url>
 
Options:
  --help           Show help  [boolean]
  -d, --delete     change incoming index operations to delete  [boolean] [default: false]
  -t, --transform  file with transform function  [string]

Import with Index/Type in the URL

When importing, an index or alias in the URL will override that in the bulk data.

Alias

Exports (non standard) alias bulk operations.

$ ./ductile alias --help
 
 Usage: ductile alias <url>
 
Options:
  --help  Show help  [boolean]

Examples

This tools works with stdin/stdout.

Export

$ ductile export http://elastichost:9200/myindex
{"index":{"_index":"myindex","_type":"mytype","_id":"sdltb459b78"}}
{"type":"picture","mimetype":"image/jpeg","representationtype":"complete","pubstatus":"usable","copyrightholder":"Afp","product":[{"code":"FOAFP","nam
...

To file

$ ductile export http://elastichost:9200/myindex > dump.bulk

With type

$ ductile export http://elastichost:9200/myindex/mytype > dump.bulk

To delete operations

$ ./ductile export -d http://devbox.local:9200/myindex
{"delete":{"_index":"myindex","_type":"mytype","_id":"sdltb459b78"}}
{"delete":{"_index":"myindex","_type":"mytype","_id":"sdltb45b7ad"}}
{"delete":{"_index":"myindex","_type":"mytype","_id":"sdltb45b7cc"}}
{"delete":{"_index":"myindex","_type":"mytype","_id":"sdltb45be86"}}

With a query

Queries are JSON formatted elasticsearch queries. The default query is a match_all. The query file is require, so it can also be expressed as .js or '.json'

$ ./ductile export -q ./query.json http://devbox.local:9200/dist-sdl-20160314
{"index":{"_index":"myindex","_type":"mytype","_id":"sdltb459b78"}}
{"type":"picture","mimetype":"image/jpeg","representationtype":"complete","pubstatus":"usable","copyrightholder":"Afp","product":[{"code":"FOAFP","nam

The query.json:

{
  "query": {
    "match_all": {}
  }
}

Transform output

Output can optionally be transformed before turned into bulk. The transform file is require, and must produce a function.

$ ductile export -t ./mytransform.js http://elastichost:9200/myindex/mytype > dump.bulk

The mytransform.js:

module.exports = function(hit) {
    hit._source.changedvalue = "PANDA!";
    return hit;
};

The function must return the item. Returning nothing or null will drop the item, and can be used as a programmatic filter.

The input to the function is a hit as produced by elasticsearch. Any part of the input can be changd.

{
  "_index": "myindex",
  "_type": "mytype",
  "_id": "sdltb459b78",
  "_score": 1,
  "_source": {  }
}

Import

From an export

$ ductile export http://host1:9200/myindex1 | ductile import http://host2:9200/myindex2

From a file

$ ductile import http://elastichost:9200/myindex < dump.bulk

Make delete operations

Index operations can be turned to delete operations.

$ ductile import -d http://elastichost:9200/myindex < dump-with-index-oper.bulk

Transform input

Input can be optionally transformed. The transform file is require, and must produce a function.

$ ductile import -t ./mytransform.js http://elastichost:9200/myindex/mytype < dump.bulk

The mytransform.js:

module.exports = function(hit) {
    hit._source.changedvalue = "PANDA!";
    return hit;
};

The function must return the item. Returning nothing or null will drop the item, and can be used as a programmatic filter.

Even though the input is a bulk format, the the input to the function is a synthetic hit similar to that produced by elasticsearch searches. Any part of the input can be changd.

Worth noting is the non-elasticsearch-standard _oper field that will hold one of index, create, delete or update.

{
  "_index": "myindex",
  "_type": "mytype",
  "_id": "sdltb459b78",
  "_score": 1,
  "_oper": "index",
  "_source": {  }
}

Alias

$ ./ductile alias http://elast01:9200/dist-sdl | $ ./ductile import http://elast02:9200/dist-sdl

License

The MIT License (MIT)

Copyright © 2016 Martin Algesten

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Some code was borrowed/changed from elasticsearch-streams which is Copyright (c) 2015 Sutoiku, Inc.