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Benoit Chesneau commented on COUCHDB-2052: ------------------------------------------ Yeah we should return a 501 error probably On which entry point? This is why I propose to have the supported link. But it may not be enough. What I still understand is how you feature proposal fit the bill. I mean there should be a common place where to define these capabilities/features then. At least to know which one to pick, and which one to advertise. Any idea on how you would like to see it? (For the 2 issues above, please open a ticket, this can be fixed) > Add API for discovering feature availability > -------------------------------------------- > > Key: COUCHDB-2052 > URL: https://issues.apache.org/jira/browse/COUCHDB-2052 > Project: CouchDB > Issue Type: Improvement > Security Level: public(Regular issues) > Components: HTTP Interface > Reporter: Jens Alfke > > I propose adding to the response of "GET /" a property called "features" or > "extensions" whose value is an array of strings, each string being an > agreed-upon identifier of a specific optional feature. For example: > {"couchdb": "welcome", "features": ["_bulk_get", "persona"]}, "vendor": > … > Rationale: > Features are being added to CouchDB over time, plug-ins may add features, and > there are compatible servers that may have nonstandard features (like > _bulk_get). But there isn't a clear way for a client (which might be another > server's replicator) to determine what features a server has. Currently a > client looking at the response of a GET / has to figure out what server and > version thereof it's talking to, and then has to consult hardcoded knowledge > that version X of server Y supports feature Z. > (True, you can often get away without needing to check, by assuming a feature > exists but falling back to standard behavior if you get an error. But not all > features may be so easy to detect — the behavior of an unaware server might > be to ignore the feature and do the wrong thing, rather than returning an > error — and anyway this adds extra round-trips that slow down the operation.) -- This message was sent by Atlassian JIRA (v6.1.5#6160)