| Display Name | API Name | Default Value | Allowable Values | Description |
|---|
| Client Service | gridfs-client-service | | Controller Service API:
MongoDBClientService
Implementation: MongoDBControllerService | The MongoDB client service to use for database connections. |
| Mongo Database Name | gridfs-database-name | | | The name of the database to use
Supports Expression Language: true (will be evaluated using flow file attributes and variable registry) |
| Bucket Name | gridfs-bucket-name | | | The GridFS bucket where the files will be stored. If left blank, it will use the default value 'fs' that the MongoDB client driver uses.
Supports Expression Language: true (will be evaluated using flow file attributes and variable registry) |
| File Name | gridfs-file-name | | | The name of the file in the bucket that is the target of this processor.
Supports Expression Language: true (will be evaluated using flow file attributes and variable registry) |
| Query | gridfs-query | | | A valid MongoDB query to use to fetch one or more files from GridFS.
Supports Expression Language: true (will be evaluated using flow file attributes and variable registry) |
| Query Output Attribute | mongo-query-attribute | | | If set, the query will be written to a specified attribute on the output flowfiles.
Supports Expression Language: true (will be evaluated using flow file attributes and variable registry) |
| Operation Mode | mongo-operation-mode | Full Query Fetch | - Full Query Fetch
 - Stream Query Results
| This option controls when results are made available to downstream processors. If Stream Query Results is enabled, provenance will not be tracked relative to the input flowfile if an input flowfile is received and starts the query. In Stream Query Results mode errors will be handled by sending a new flowfile with the original content and attributes of the input flowfile to the failure relationship. Streaming should only be used if there is reliable connectivity between MongoDB and NiFi. |