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https://issues.apache.org/jira/browse/DRILL-8011?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17429767#comment-17429767
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ASF GitHub Bot commented on DRILL-8011:
---------------------------------------
cgivre opened a new pull request #2337:
URL: https://github.com/apache/drill/pull/2337
# [DRILL-8011](https://issues.apache.org/jira/browse/DRILL-8011): Add
Dropbox File System to Drill
## Description
This PR enables Drill to query files stored on Dropbox.
## Documentation
As of Drill 1.20.0 it is possible to connect Drill to a Dropbox account and
query files stored there. Clearly, the performance will be much better if the
files are stored
locally, however, if your data is located in dropbox Drill makes it easy to
explore that data.
## Creating an API Token
The first step to enabling Drill to query Dropbox is creating an API token.
1. Navigate to https://www.dropbox.com/developers/apps/create
2. Choose `Scoped Access` under Choose an API.
3. Depending on the access limitations you are looking for select either
full or limited to a particular folder.
4. In the permissions tab, make sure all the permissions associated with
reading data are enabled.
Once you've done that, and hit submit, you'll see a section in your newly
created Dropbox App called `Generated Access Token`. Copy the value here and
that is what you will
use in your Drill configuration.
## Configuring Drill
Once you've created a Dropbox access token, you are now ready to configure
Drill to query Dropbox. To create a dropbox connection, in Drill's UI,
navigate to the Storage tab,
click on `Create New Storage Plugin` and add the items below:
```json
"type": "file",
"connection": "dropbox:///",
"config": {
"dropboxAccessToken": "<your access token here>"
},
"workspaces": {
"root": {
"location": "/",
"writable": false,
"defaultInputFormat": null,
"allowAccessOutsideWorkspace": false
}
}
}
```
Paste your access token in the appropriate field and at that point you
should be able to query Dropbox. Drill treats Dropbox as any other file
system, so all the instructions
here (https://drill.apache.org/docs/file-system-storage-plugin/) and here
(https://drill.apache.org/docs/workspaces/)
about configuring a workspace, and adding format plugins are exactly the
same as any other on Drill.
### Securing Dropbox Credentials
As with any other storage plugin, you have a few options as to how to store
the credentials. See [Drill Credentials
Provider](./PluginCredentialsProvider.md) for more
information about how you can store your credentials securely in Drill.
## Running the Unit Tests
Unfortunately, in order to run the unit tests, it is necessary to have an
external API token. Therefore, the unit tests have to be run manually. To run
the unit tests:
1. Get your Dropbox API key as explained above and paste it above into the
`ACCESS_TOKEN` variable.
2. In your dropbox account, create a folder called 'csv' and upload the
file `hdf-test.csvh` into that folder
3. In your dropbox account, upload the file `http-pcap.json` to the root
directory of your dropbox account
4. In the `testListFiles` test, you will have to update the modified dates
5. Run tests.
### Test Files
Test files can be found in the
`java-exec/src/test/resources/dropboxTestFiles`
folder. Simply copy these files in the structure there into your dropbox
account.
## Limitations
1. It is not possible to save files to Dropbox from Drill, thus CTAS queries
will fail.
2. Dropbox does not expose directory metadata, so it is not possible to
obtain the directory size, modification date or access dates.
3. Dropbox does not maintain the last access date as distinct from the
modification date of files.
## Testing
There are unit tests provided with this PR, however they must be run
manually at the moment because Dropbox requires a private API key to access.
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> Add Dropbox File System to Drill
> --------------------------------
>
> Key: DRILL-8011
> URL: https://issues.apache.org/jira/browse/DRILL-8011
> Project: Apache Drill
> Issue Type: Improvement
> Components: Storage - Other
> Affects Versions: 1.19.0
> Reporter: Charles Givre
> Assignee: Charles Givre
> Priority: Major
> Fix For: 1.20.0
>
>
> This PR proposes to add the ability to query files stored in Dropbox to
> Apache Drill.
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