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From Robert Newson <rnew...@apache.org>
Subject Re: Database information from validate_doc_update
Date Sat, 09 Nov 2013 11:04:26 GMT
Deliberately not, no, a validate_doc_update function is only passed
the new document you're trying to update, the current one (if there is
one), the context of the user and the security object for the
database.

B.


On 9 November 2013 11:00, first-leon@yandex.ru <first-leon@yandex.ru> wrote:
> And i not possible get information about data base from validate_doc_update?
>
>> validate_doc_update functions deliberately don't let you do this
>> otherwise eventually consistency can be compromised.
>>
>> Also remember that the native view server has no sandbox, anyone
>> allowed to edit design documents can do anything to your servers that
>> the user you run couchdb as can (read files, open network connections,
>> delete files, etc).
>>
>> B.
>>
>>
>> On 9 November 2013 09:02, first-leon@yandex.ru <first-leon@yandex.ru>
>> wrote:
>>>
>>> It is very good!
>>> But, i create validation function and see error:
>>>
>>> Error: EXIT
>>>
>>> {{badmatch,[]},
>>>   [{couch_query_servers,new_process,3,
>>> [{file,"couch_query_servers.erl"},{line,472}]},
>>>    {couch_query_servers,lang_proc,3,
>>> [{file,"couch_query_servers.erl"},{line,462}]},
>>>    {couch_query_servers,handle_call,3,
>>> [{file,"couch_query_servers.erl"},{line,322}]},
>>>    {gen_server,handle_msg,5,[{file,"gen_server.erl"},{line,585}]},
>>> {proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,239}]}]}
>>>
>>> I am not understand Erlang code, and not see error details.
>>> You have it working?
>>>
>>> In /etc/couchdb/local.ini i added
>>> [native_query_servers]
>>> erlang = {couch_native_process, start_link, []}
>>>
>>>
>>>> Currently, this is possible only via native Erlang query server:
>>>>
>>>> fun(NewDoc, OldDoc, {UserCtx}, SecObj) ->
>>>>     DbName = couch_util:get_value(<<"db">>, UserCtx),
>>>>     {ok, Db} = couch_db:open_int(DbName, [{user_ctx, UserCtx}]),
>>>>     {ok, Info} = couch_db:get_db_info(Db),
>>>>     DiskSize = couch_util:get_value(disk_size, Info),
>>>>     case DiskSize < 100000 of  %% ~100KB
>>>>       true ->
>>>>         ok;
>>>>       false ->
>>>>         throw({[{<<"forbidden">>, <<"quota limit reached">>}]})
>>>>     end,
>>>>     1
>>>> end.
>>>>
>>>>
>>>>
>>>> --
>>>> ,,,^..^,,,
>>>>
>>>>
>>>> On Sat, Nov 9, 2013 at 7:56 AM, first-leon@yandex.ru
>>>> <first-leon@yandex.ru> wrote:
>>>>>
>>>>> Hello.
>>>>>
>>>>> Can I get information about the database as a function of
>>>>> validate_doc_update? For example, to find out the size of the database
>>>>> or
>>>>> the number of documents.
>>>>>
>>>>> Example:
>>>>> function(newDoc, oldDoc, userCtx) {
>>>>>    if ( thisDb.disk_size > 1000 ) throw({forbidden : 'you have exceeded
>>>>> the
>>>>> limit'});
>>>>> }
>>>>>
>>>>> It is possible?
>>>>>
>>>>> Thanks.
>>>
>>>
>

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