Endpoint._make_request namespace detection guard misses text/xml responses
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評估
研究方向
Start in tableauserverclient/server/endpoint/endpoint.py at Endpoint._make_request and compare its Content-Type guard with TSC’s XML_CONTENT_TYPE constant. Review #1046 and PR #1863 to determine whether namespace detection remains needed; done means the chosen path is covered for the relevant XML response type or the obsolete subsystem is removed consistently.
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描述
Endpoint._make_request (in tableauserverclient/server/endpoint/endpoint.py) parses the response Content-Type and calls the namespace-detection helper only when it matches:
if content_type == "application/xml":
self.parent_srv._namespace.detect(server_response.content)
Tableau Server emits text/xml (which is what TSC's own XML_CONTENT_TYPE constant is set to), so _namespace.detect() never fires from this path. The pre-existing sign-in path called _namespace.detect() explicitly, so the pre-8.3 namespace fallback still worked there; PR #1848 routes signin through _make_request, which now exposes the bug for signin traffic too.
Two things worth thinking about together:
- The immediate fix: widen the guard to accept both
application/xmlandtext/xml, or (cheaper) just check"xml" in content_typesince detection is idempotent and cheap. - Is the code even reachable? The namespace fallback exists to accept pre-Tableau-8.3 servers that used
http://tableausoftware.com/apiinstead ofhttp://tableau.com/api. TSC'sminimum_supported_server_versionis 2.3, which corresponds to Tableau Server 10.0 (2016). Any server old enough to emit the pre-8.3 namespace is far below the minimum. See #1046 and PR #1863 for a proposed removal of the whole detection subsystem.
If PR #1863 lands, this issue is moot (the whole _namespace.detect call and the Namespace class go away). If it doesn't, we need to fix the guard.
Filed after a fresh-eyes review flagged the guard on PR #1848.
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