Locks

This API provides lock and unlock semantics for the key-value resource. It supports the following operations:

• Place lock
• Remove lock

If present, label must be an explicit label value (not a wildcard). For all operations, it's an optional parameter. If omitted, it implies no label.

Prerequisites

• All HTTP requests must be authenticated. See the authentication section.
• All HTTP requests must provide explicit api-version. See the versioning section.

Lock key-value

• Required: {key}, {api-version}
• Optional: label

PUT /locks/{key}?label={label}&api-version={api-version} HTTP/1.1

Responses:

HTTP/1.1 200 OK
Content-Type: application/vnd.microsoft.appconfig.kv+json; charset=utf-8"

{
  "etag": "4f6dd610dd5e4deebc7fbaef685fb903",
  "key": "{key}",
  "label": "{label}",
  "content_type": null,
  "value": "example value",
  "created": "2017-12-05T02:41:26.4874615+00:00",
  "locked": true,
  "tags": []
}

If the key-value doesn't exist, the following response is returned:

HTTP/1.1 404 Not Found

Unlock key-value

• Required: {key}, {api-version}
• Optional: label

DELETE /locks/{key}?label={label}?api-version={api-version} HTTP/1.1

Responses:

HTTP/1.1 200 OK
Content-Type: application/vnd.microsoft.appconfig.kv+json; charset=utf-8"

{
  "etag": "4f6dd610dd5e4deebc7fbaef685fb903",
  "key": "{key}",
  "label": "{label}",
  "content_type": null,
  "value": "example value",
  "created": "2017-12-05T02:41:26.4874615+00:00",
  "locked": true,
  "tags": []
}

If the key-value doesn't exist, the following response is returned:

HTTP/1.1 404 Not Found

Conditional lock and unlock

To prevent race conditions, use If-Match or If-None-Match request headers. The etag argument is part of the key representation. If If-Match or If-None-Match are omitted, the operation is unconditional.

The following request applies the operation only if the current key-value representation matches the specified etag:

PUT|DELETE /locks/{key}?label={label}&api-version={api-version} HTTP/1.1
If-Match: "4f6dd610dd5e4deebc7fbaef685fb903"

The following request applies the operation only if the current key-value representation exists, but doesn't match the specified etag:

PUT|DELETE /kv/{key}?label={label}&api-version={api-version} HTTP/1.1
If-None-Match: "4f6dd610dd5e4deebc7fbaef685fb903"