Files Actions

https://api.losant.com/applications/APPLICATION_ID/files

Below are the various requests that can be performed against the Files resource, as well as the expected parameters and the potential responses.

Get

Returns the files for an application

Method And Url

GET https://api.losant.com/applications/APPLICATION_ID/files

Authentication

A valid api access token is required to access this endpoint. The token must include at least one of the following scopes: all.Application, all.Application.cli, all.Application.read, all.Organization, all.Organization.read, all.User, all.User.cli, all.User.read, files.*, or files.get.

Request Path Components

Path Component Description Example
APPLICATION_ID ID associated with the application 575ec8687ae143cd83dc4a97

Request Query Parameters

Name Required Description Default Example
sortField N Field to sort the results by. Accepted values are: lastUpdated, type, name, creationDate lastUpdated sortField=subject
sortDirection N Direction to sort the results by. Accepted values are: asc, desc asc sortDirection=asc
page N Which page of results to return 0 page=0
perPage N How many items to return per page 100 perPage=10
filterField N Field to filter the results by. Blank or not provided means no filtering. Accepted values are: name filterField=name
filter N Filter to apply against the filtered field. Supports globbing. Blank or not provided means no filtering. filter=myFile
type N Limit by the type (file or directory) of the file type=file
status N Limit the result to only files of this status. Accepted values are: completed, pending status=completed
directory N Get files that are inside of this directory directory=/a/path/

Request Headers

Name Required Description Default
Authorization Y The token for authenticating the request, prepended with Bearer

Curl Example 

curl -H 'Content-Type: application/json' \
    -H 'Accept: application/json' \
    -H 'Authorization: Bearer YOUR_API_ACCESS_TOKEN' \
    -X GET \
    https://api.losant.com/applications/APPLICATION_ID/files

Successful Responses

Code Type Description
200 Files Schema Collection of files

Error Responses

Code Type Description
400 Error Error if malformed request
404 Error Error if application was not found

Post

Create a new file for an application

Method And Url

POST https://api.losant.com/applications/APPLICATION_ID/files

Authentication

A valid api access token is required to access this endpoint. The token must include at least one of the following scopes: all.Application, all.Application.cli, all.Organization, all.User, all.User.cli, files.*, or files.post.

Request Path Components

Path Component Description Example
APPLICATION_ID ID associated with the application 575ec8687ae143cd83dc4a97

Request Headers

Name Required Description Default
Authorization Y The token for authenticating the request, prepended with Bearer

Request Body

The body of the request should be serialized JSON that validates against the File Post schema. For example, the following would be a valid body for this request:

{
  "name": "file.csv",
  "type": "file",
  "parentDirectory": "/",
  "fileSize": 500,
  "contentType": "text/csv"
}

Curl Example 

curl -H 'Content-Type: application/json' \
    -H 'Accept: application/json' \
    -H 'Authorization: Bearer YOUR_API_ACCESS_TOKEN' \
    -X POST \
    -d '{"name":"file.csv","type":"file","parentDirectory":"/","fileSize":500,"contentType":"text/csv"}' \
    https://api.losant.com/applications/APPLICATION_ID/files

Successful Responses

Code Type Description
201 File Upload Post Response Successfully created file and returned a post url to respond with

Error Responses

Code Type Description
400 Error Error if malformed request
404 Error Error if application was not found

Usage of Response

After making a Files: Post request to Losant with the information about your file, you will need to make a second request using the information from that response object (the upload property) to actually place the file onto the cloud storage service.

In the upload field of the Files: Post response, to perform the actual upload of your file. For example, below is how to use curl and the values from the response to perform the upload of the file data:

curl -X POST \
  -F 'Content-Type=<RESPONSE_OBJECT.upload.fields.Content-Type>' \
  -F 'key=<RESPONSE_OBJECT.upload.fields.key>' \
  -F 'X-Amz-Algorithm=<RESPONSE_OBJECT.upload.fields.X-Amz-Algorithm>' \
  -F 'X-Amz-Credential=<RESPONSE_OBJECT.upload.fields.X-Amz-Credential>' \
  -F 'X-Amz-Date=<RESPONSE_OBJECT.upload.fields.X-Amz-Date>' \
  -F 'Policy=<RESPONSE_OBJECT.upload.fields.Policy>' \
  -F 'X-Amz-Signature=<RESPONSE_OBJECT.upload.fields.X-Amz-Signature>' \
  -F 'file=@<YOUR_LOCAL_FILE_PATH>' \
  '<RESPONSE_OBJECT.upload.url>'

As another example, here is how you would upload the file contents using JavaScript in a browser:

var filePostResponse = /* result of Losant API Files POST call */;
var fileBlob = /* a blob, buffer, or browser file instance */;
var formData = new FormData();
formData.append('Content-Type',
  filePostResponse.upload.fields['Content-Type']);
formData.append('key', filePostResponse.upload.fields.key);
formData.append('X-Amz-Algorithm',
  filePostResponse.upload.fields['X-Amz-Algorithm']);
formData.append('X-Amz-Credential',
  filePostResponse.upload.fields['X-Amz-Credential']);
formData.append('X-Amz-Date',
  filePostResponse.upload.fields['X-Amz-Date']);
formData.append('Policy', filePostResponse.upload.fields['Policy']);
formData.append('X-Amz-Signature',
  filePostResponse.upload.fields['X-Amz-Signature']);
formData.append('file', fileBlob);
var xhr = new XMLHttpRequest();
xhr.open('POST', filePostResponse.upload.url, true);
xhr.send(formData);

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