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

Schemas

Error

Schema for errors returned by the API

Error Schema

▶
root:{} 3 keys
$schema:"http://json-schema.org/draft-07/schema#"
type:"object"
▶
properties:{} 2 keys
▶
type:{} 1 key
▶
message:{} 1 key

Error Example

▶
root:{} 2 keys
type:"NotFound"
message:"Application was not found"

File Post

Schema to create a single file or directory

File Post Schema

▶
root:{} 5 keys
$schema:"http://json-schema.org/draft-07/schema#"
type:"object"
▶
properties:{} 6 keys
▶
name:{} 3 keys
▶
parentDirectory:{} 2 keys
▶
type:{} 2 keys
▶
fileSize:{} 1 key
▶
contentType:{} 2 keys
▶
fileDimensions:{} 3 keys
additionalProperties:false
▶
required:[] 2 items

File Post Example

▶
root:{} 5 keys
name:"file.csv"
type:"file"
parentDirectory:"/"
fileSize:500
contentType:"text/csv"

File Upload Post Response

Schema to upload the file to s3

File Upload Post Response Schema

▶
root:{} 3 keys
$schema:"http://json-schema.org/draft-07/schema#"
type:"object"
▶
properties:{} 14 keys
▶
id:{} 2 keys
▶
applicationId:{} 2 keys
▶
creationDate:{} 2 keys
▶
lastUpdated:{} 2 keys
▶
authorId:{} 2 keys
▶
authorType:{} 2 keys
▶
status:{} 2 keys
▶
name:{} 3 keys
▶
parentDirectory:{} 2 keys
▶
type:{} 2 keys
▶
fileSize:{} 1 key
▶
contentType:{} 2 keys
▶
fileDimensions:{} 2 keys
▶
upload:{} 2 keys

File Upload Post Response Example

▶
root:{} 13 keys
id:"575ec8687ae143cd83dc4a97"
applicationId:"575ec8687ae143cd83dc4a97"
creationDate:"2016-06-13T04:00:00.000Z"
lastUpdated:"2016-06-13T04:00:00.000Z"
authorId:"575ed70c7ae143cd83dc4aa9"
authorType:"user"
status:"pending"
name:"file.csv"
type:"file"
parentDirectory:"/"
fileSize:500
contentType:"text/csv"
▶
upload:{} 2 keys

Files Schema

Schema for a collection of files

Files Schema Schema

▶
root:{} 3 keys
$schema:"http://json-schema.org/draft-07/schema#"
type:"object"
▶
properties:{} 10 keys
▶
items:{} 2 keys
▶
count:{} 1 key
▶
totalCount:{} 1 key
▶
perPage:{} 1 key
▶
page:{} 1 key
▶
filter:{} 1 key
▶
filterField:{} 1 key
▶
sortField:{} 1 key
▶
sortDirection:{} 2 keys
▶
parentExists:{} 1 key

Files Schema Example

▶
root:{} 2 keys
▶
items:[] 2 items
count:2

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);