Notifications

CO server provides push notifications service indented to notify client about changes made to the cloud file system to perform well-timed user UI update as well as about async file operations results such as import/export, printing etc.

Notifications are sent via the websocket channel and each notification payload contains JSON object with following fields

Field	Description
`operation`	Name of the performed operation
`objectId`	ID of the file object
`dirId`	Source or target folder ID (depends on the file operation)
`destDirId`	Target folder ID
`objectName`	Name of the file object
`sourceId`	ID of the source file used for conversion (may be hidden one)
`usedBytes`	Used disk space
`totalBytes`	Total disk space
`revisionId`	Revision id
`email`	Email for operation [Since 2018.03]
`login`	Login of initiator for operation [Since 2019.01]
`newId`	New file id if it is changed during operation (e.g. move from shared) [Since 2019.03]
`time`	Time of initiation for operation [Since 2020.01]
`requestId`	ID of the user initiated operation. Returned in the X-co-request-id header in the response to synchronous API request.
`errorCode`	SRV error code.
`group`	For group shared notifications will be true if it is group sharing.
`userId`	User id for shared notifications. For group shared notifications will contain groupId.
`changedValues`	Map with changed file properties for FILE_METADATA_CHANGE and FILE_CUSTOM_PROPS_CHANGE (such as fileNameChanged, fileCorrupted).
`customProperties`	Map with custom file properties.
`deletedKeys`	List of deleted file properties for FILE_CUSTOM_PROPS_CHANGE.