Data Download Service Overview¶
EnOS provides a series of open APIs to help you manage file download tasks, including creating download tasks, getting download status, canceling download tasks, and querying data channels. You can use Data Download APIs to create file download tasks for applications that have already started a data read channel (and the channel is not a cross-source channel), query the status of download tasks, or cancel download tasks. For the full list of Data Download Service APIs and functional descriptions, see API list.
API List¶
You can see what operations can be used via these APIs, the URL corresponding to each operation, and whether it is applicable to EnOS Cloud and EnOS Edge in the following table.
API Name |
Description |
EnOS Cloud |
EnOS Edge |
|---|---|---|---|
Get the list of channels (Read, Write, and Download) to which the application is authorized. |
√ |
× |
|
Create a file download task. |
√ |
× |
|
Get the status of a file download task. |
√ |
× |
|
Cancel a file download task. |
√ |
× |
Common Error Code¶
You can learn about the common error codes of Data Subscription APIs through the following table.
Code |
Description |
|---|---|
81500 |
Internal service error. |
81400 |
Channel or data source exception. |
81404 |
Channel or data source does not exist. |