Reputation: 791
When I retrieve a checklist instance, I got the following section related to attachment.
{
"type": "instance_item_attachments",
"id": "5a0a2acf-b02a-4b88-86cc-962c3831bdee",
"attributes": {
"name": "6856ad10-6ab0-11e9-9150-9fda3da0626e.png",
"attachmentType": "OSS",
"mimeType": "image/png",
"uploadStatus": "COMPLETED",
"urns": [
{
"urn": "urn:adsk.wipprod:fs.file:vf.gy4mB910SneymU86Gc4O0A?version=1",
"type": "WIP"
},
{
"urn": "urn:adsk.objects:os.object:wip.dm.prod/ede3de59-1b68-485c-82fe-f1f2af3442fe.png",
"type": "OSS"
},
{
"urn": "urn:adsk.checklists.cs.attachment:58b8afcf-d7cd-49ad-aa10-78c50610761b/5a0a2acf-b02a-4b88-86cc-962c3831bdee",
"type": "CHECKLIST"
}
],
"createdAt": "2019-04-29T18:55:51.334Z",
"updatedAt": "2019-04-29T18:55:54.137Z",
"createdBy": "TAKCJQU6HGXW",
"modifiedBy": "TAKCJQU6HGXW",
"permittedActions": [
"canArchive",
"canEdit"
],
"permittedAttributes": [
"mimeType",
"uploadStatus"
]
},
"links": {
"self": "/containers/58b8afcf-d7cd-49ad-aa10-78c50610761b/instance_item_attachments/5a0a2acf-b02a-4b88-86cc-962c3831bdee"
},
"relationships": {
"container": {
"meta": {
"relation": "primary",
"readOnly": false
},
"links": {
"self": "/containers/58b8afcf-d7cd-49ad-aa10-78c50610761b/instance_item_attachments/5a0a2acf-b02a-4b88-86cc-962c3831bdee/relationships/container",
"related": "/containers/58b8afcf-d7cd-49ad-aa10-78c50610761b/instance_item_attachments/5a0a2acf-b02a-4b88-86cc-962c3831bdee/container"
},
"data": {
"type": "containers",
"id": "58b8afcf-d7cd-49ad-aa10-78c50610761b"
}
},
"item": {
"meta": {
"relation": "primary",
"readOnly": false
},
"links": {
"self": "/containers/58b8afcf-d7cd-49ad-aa10-78c50610761b/instance_item_attachments/5a0a2acf-b02a-4b88-86cc-962c3831bdee/relationships/item",
"related": "/containers/58b8afcf-d7cd-49ad-aa10-78c50610761b/instance_item_attachments/5a0a2acf-b02a-4b88-86cc-962c3831bdee/item"
},
"data": null
}
}
}
Now, I want to download this attachment, the provided URN is: wip.dm.prod/ede3de59-1b68-485c-82fe-f1f2af3442fe.png
If I try to access it using the following link, it says not found
developer.api.autodesk.com/oss/v2/buckets/wip.dm.prod/b30e3ffe-333b-446c-b834-e2f2141096b4.png
However, if I changed the URL a bit (by adding objects), it works fine.
developer.api.autodesk.com/oss/v2/buckets/wip.dm.prod/objects/b30e3ffe-333b-446c-b834-e2f2141096b4.png
Am I doing something wrong here? or this is a bug in the provided urn?
Upvotes: 0
Views: 202
Reputation: 8574
Adding to Adam Nagy reply, you would need to break the URN. From your original question:
urn:adsk.objects:os.object:wip.dm.prod/ede3de59-1b68-485c-82fe-f1f2af3442fe.png
In .NET you can try (using System.Linq):
string bucketKey = urn.Split("/").First().Split(":").Last();
string objectName = urn.Split("/").Last();
Then rebuild as:
string attachemtnUrl = string.Format("{0}/oss/v2/buckets/{1}/objects/{2}", BASE_URL, bucketKey, objectName);
And you'll also need the Authorization
header with a valid access token.
Upvotes: 2
Reputation: 2125
The id / urn of an object in OSS (Object Storage Service) contains the bucket name and object name after the "urn:adsk.objects:os.object:" section.
There is a tutorial on downloading a file https://forge.autodesk.com/en/docs/data/v2/tutorials/download-file/
It shows that the reply concerning an item contains both the id and the actual URL of the download link under the storage section:
"storage": {
"data": {
"type": "objects",
"id": "urn:adsk.objects:os.object:wip.dm.prod/977d69b1-43e7-40fa-8ece-6ec4602892f3.rvt"
},
"meta": {
"link": {
"href": "https://developer.api.autodesk.com/oss/v2/buckets/wip.dm.prod/objects/977d69b1-43e7-40fa-8ece-6ec4602892f3.rvt"
}
}
}
There you can see the connection between the id and the URL you can use to download the file
Upvotes: 1