Blob Store APIManaged Fusion Admin APIs

Table of Contents

Blob types
Examples

The Blob Store REST API allows storing binary objects in Solr. The primary use case for this is to store entity extraction models, lookup lists or exclusion lists for use in index pipelines. This may include the entity extraction models and lookup lists included with Managed Fusion in the {fusion_path}/data/nlp directory, or files that you have created on your own.

You can also work with blobs in the Managed Fusion UI using the blob manager.

When you upload a blob without specifying an app, the blob is stored in the system_blobs collection and you can access it via the Object Explorer.

Blob types

A resourceType query parameter can be used to specify the blob type. For example, specify file:js-index when uploading a Javascript index stage, like this:

curl -u USERNAME:PASSWORD -H 'Content-Type: text/javascript' -X PUT 'https://EXAMPLE_COMPANY.b.lucidworks.cloud/api/blobs/index-pipeline-js-stage.js?resourceType=file:js-index' --data-binary @index-pipeline-js-stage.js

The complete list of valid values for resourceType is below:

Type Description

Type	Description
`driver:jdbc`	A JDBC driver
`file:js-index`	A JavaScript file for use with a Managed Javascript index stage
`file:js-query`	A JavaScript file for use with a Managed Javascript query stage
`file`	Any uploaded file, such as from the Quickstart or the Index Workbench
`unspecified`	A blob of unknown type If no `resourceType` is specified on upload, "other" is assigned by default.

driver:jdbc

A JDBC driver

file:js-index

A JavaScript file for use with a Managed Javascript index stage

file:js-query

A JavaScript file for use with a Managed Javascript query stage

file

Any uploaded file, such as from the Quickstart or the Index Workbench

unspecified

A blob of unknown type

If no resourceType is specified on upload, "other" is assigned by default.

Examples

Upload a JavaScript file to the blob store:

REQUEST

curl -u USERNAME:PASSWORD -X PUT -H 'Content-Type: text/javascript' --data-binary @query-pipeline-js-stage.js https://EXAMPLE_COMPANY.b.lucidworks.cloud/api/blobs/query-pipeline-js-stage.js?resourceType=file:js-query

The response is empty.

Verify that the JavaScript blob was uploaded:

REQUEST

curl -u USERNAME:PASSWORD https://EXAMPLE_COMPANY.b.lucidworks.cloud/api/blobs?resourceType=file:js-query

RESPONSE

[ {
  "id" : "query-pipeline-js-stage.js",
  "path" : "/query-pipeline-js-stage.js",
  "dir" : "/",
  "filename" : "query-pipeline-js-stage.js",
  "contentType" : "text/javascript",
  "size" : 0,
  "modifiedTime" : "2018-09-11T16:23:17.743Z",
  "version" : 1611328911094841344,
  "md5" : "d41d8cd98f00b204e9800998ecf8427e",
  "metadata" : {
    "resourceType" : "file:js-query"
  }
} ]

Upload an OpenNLP sentence model binary file to the blob store:

REQUEST

curl -u USERNAME:PASSWORD -X PUT --data-binary @data/nlp/models/en-sent.bin -H 'Content-type: application/octet-stream' https://EXAMPLE_COMPANY.b.lucidworks.cloud/api/blobs/sentenceModel.bin

In this example, we have changed the name of the blob during upload by giving it a different ID. The file is named 'en-sent.bin' but we have defined the ID of this to 'sentenceModel.bin'. When we use this blob in an index pipeline, we would refer to it by the ID we have given it.

Get the manifest for a sentence OpenNLP model we have previously saved in the blob store:

REQUEST

curl -u USERNAME:PASSWORD -X HEAD https://EXAMPLE_COMPANY.b.lucidworks.cloud/api/blobs/sentenceModel.bin

RESPONSE

{
  "name" : "sentenceModel.bin",
  "contentType" : "application/octet-stream",
  "size" : 98533,
  "modifiedTime" : "2014-09-08T18:50:07.559Z",
  "version" : 1478704189996531712,
  "md5" : "3822c5f82cb4ba139284631d2f6b7fde"
}

Upload a JDBC driver, using slashes in the blob name:

REQUEST

curl -u USERNAME:PASSWORD -X PUT --data-binary @en-sent.bin -H 'Content-length: 6' -H 'Content-type: application/octet-stream' https://EXAMPLE_COMPANY.b.lucidworks.cloud/api/blobs/good/to/go/sentenceModel.bin?resourceType=driver:jdbc

RESPONSE

{
  "name" : "good/to/go/sentenceModel.bin",
  "contentType" : "application/octet-stream",
  "size" : 6,
  "modifiedTime" : "2017-04-04T15:58:32.856Z",
  "version" : 0,
  "md5" : "b1946ac92492d2347c6235b4d2611184",
  "metadata" : {
    "subtype" : "driver:jdbc",
    "resourceType" : "driver:jdbc"
  }
}

Get the JDBC driver that was uploaded:

REQUEST

curl -u USERNAME:PASSWORD https://EXAMPLE_COMPANY.b.lucidworks.cloud/api/blobs?resourceType=driver:jdbc

RESPONSE

[ {
  "name" : "good/to/go/sentenceModel.bin",
  "contentType" : "application/octet-stream",
  "size" : 6,
  "modifiedTime" : "2017-04-04T06:21:53.465Z",
  "version" : 1563727666574524416,
  "md5" : "b1946ac92492d2347c6235b4d2611184",
  "metadata" : {
    "subtype" : "driver:jdbc",
    "resourceType" : "driver:jdbc"
  }
} ]