Bug 1557419

Summary:	Return if a call should be tried again
Product:	[oVirt] ovirt-engine	Reporter:	Dominik Holler <dholler>
Component:	RestAPI	Assignee:	Ondra Machacek <omachace>
Status:	CLOSED WONTFIX	QA Contact:	Pavel Stehlik <pstehlik>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	4.2.2	CC:	bugs
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Last Closed:	2018-03-20 12:18:17 UTC	Type:	Bug
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oVirt Team:	Infra	RHEL 7.3 requirements from Atomic Host:
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Bug Blocks:	1557424

Description Dominik Holler 2018-03-16 14:39:03 UTC

Description of problem:
If a call to REST-API fails because a triggered command does not get a lock,
REST-API returns HTTP status 409 CONFLICT and no machine-readable hint if the conflict is permanent or temporary. If the client would know that this is a temporary problem, he automatically could try again and the call may succeed.

Version-Release number of selected component (if applicable):


How reproducible:
Try to import an external network from a provider during the provider is locked, e.g. by auto sync.

Steps to Reproduce:
1.
2.
3.

Actual results:
REST-API returns HTTP status 409 CONFLICT and no machine-readable hint that the conflict is temporary.

Expected results:
REST-API returns HTTP status 409 CONFLICT and a machine-readable hint that the conflict is temporary, e.g. as a member of the REST Fault data structure or as a  http header, maybe like "Retry-After".

Additional info:

Comment 1 Ondra Machacek 2018-03-20 12:18:17 UTC

As import an external network has decided to wait internally, there is no other API call which request this feature, closing for now.