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Posted to dev@couchdb.apache.org by Benoit Chesneau <bc...@gmail.com> on 2011/10/05 07:10:34 UTC

Re: git commit: Open replicator database in child process

On Wed, Oct 5, 2011 at 2:12 AM,  <fd...@apache.org> wrote:
> Updated Branches:
>  refs/heads/master 3c24a94dd -> 0c7fbd3da
>
>
> Open replicator database in child process
>
> This is more correct and less confusing.
>
>
> Project: http://git-wip-us.apache.org/repos/asf/couchdb/repo
> Commit: http://git-wip-us.apache.org/repos/asf/couchdb/commit/0c7fbd3d
> Tree: http://git-wip-us.apache.org/repos/asf/couchdb/tree/0c7fbd3d
> Diff: http://git-wip-us.apache.org/repos/asf/couchdb/diff/0c7fbd3d
>
> Branch: refs/heads/master
> Commit: 0c7fbd3dab5bf13215def4349dbba7f689a22ac6
> Parents: 3c24a94
> Author: Filipe David Manana <fd...@apache.org>
> Authored: Wed Oct 5 01:10:54 2011 +0100
> Committer: Filipe David Manana <fd...@apache.org>
> Committed: Wed Oct 5 01:12:45 2011 +0100
>
> ----------------------------------------------------------------------
>  src/couchdb/couch_replication_manager.erl |   11 +++++++----
>  1 files changed, 7 insertions(+), 4 deletions(-)
> ----------------------------------------------------------------------
>
>
> http://git-wip-us.apache.org/repos/asf/couchdb/blob/0c7fbd3d/src/couchdb/couch_replication_manager.erl
> ----------------------------------------------------------------------
> diff --git a/src/couchdb/couch_replication_manager.erl b/src/couchdb/couch_replication_manager.erl
> index 5885732..7d1860e 100644
> --- a/src/couchdb/couch_replication_manager.erl
> +++ b/src/couchdb/couch_replication_manager.erl
> @@ -223,9 +223,12 @@ code_change(_OldVsn, State, _Extra) ->
>
>  changes_feed_loop() ->
>     {ok, RepDb} = ensure_rep_db_exists(),
> +    RepDbName = couch_db:name(RepDb),
> +    couch_db:close(RepDb),
>     Server = self(),
>     Pid = spawn_link(
>         fun() ->
> +            {ok, Db} = couch_db:open_int(RepDbName, [sys_db]),
>             ChangesFeedFun = couch_changes:handle_changes(
>                 #changes_args{
>                     include_docs = true,
> @@ -234,7 +237,7 @@ changes_feed_loop() ->
>                     db_open_options = [sys_db]
>                 },
>                 {json_req, null},
> -                RepDb
> +                Db
>             ),
>             ChangesFeedFun(
>                 fun({change, Change, _}, _) ->
> @@ -248,11 +251,11 @@ changes_feed_loop() ->
>                 (_, _) ->
>                     ok
>                 end
> -            )
> +            ),
> +            couch_db:close(Db)
>         end
>     ),
> -    couch_db:close(RepDb),
> -    {Pid, couch_db:name(RepDb)}.
> +    {Pid, RepDbName}.
>
>
>  has_valid_rep_id({Change}) ->
>
>

Can't you ensure it in the process too ? What is the reason to have it
externally ?

- benoit

Re: git commit: Open replicator database in child process

Posted by Benoit Chesneau <bc...@gmail.com>.
On Wed, Oct 5, 2011 at 9:28 AM, Filipe David Manana <fd...@apache.org> wrote:
> On Wednesday, October 5, 2011, Benoit Chesneau <bc...@gmail.com> wrote:
>> On Wed, Oct 5, 2011 at 2:12 AM,  <fd...@apache.org> wrote:
>>> Updated Branches:
>>>  refs/heads/master 3c24a94dd -> 0c7fbd3da
>>>
>>>
>>> Open replicator database in child process
>>>
>>> This is more correct and less confusing.
>>>
>>>
>>> Project: http://git-wip-us.apache.org/repos/asf/couchdb/repo
>>> Commit: http://git-wip-us.apache.org/repos/asf/couchdb/commit/0c7fbd3d
>>> Tree: http://git-wip-us.apache.org/repos/asf/couchdb/tree/0c7fbd3d
>>> Diff: http://git-wip-us.apache.org/repos/asf/couchdb/diff/0c7fbd3d
>>>
>>> Branch: refs/heads/master
>>> Commit: 0c7fbd3dab5bf13215def4349dbba7f689a22ac6
>>> Parents: 3c24a94
>>> Author: Filipe David Manana <fd...@apache.org>
>>> Authored: Wed Oct 5 01:10:54 2011 +0100
>>> Committer: Filipe David Manana <fd...@apache.org>
>>> Committed: Wed Oct 5 01:12:45 2011 +0100
>>>
>>> ----------------------------------------------------------------------
>>>  src/couchdb/couch_replication_manager.erl |   11 +++++++----
>>>  1 files changed, 7 insertions(+), 4 deletions(-)
>>> ----------------------------------------------------------------------
>>>
>>>
>>>
> http://git-wip-us.apache.org/repos/asf/couchdb/blob/0c7fbd3d/src/couchdb/couch_replication_manager.erl
>>> ----------------------------------------------------------------------
>>> diff --git a/src/couchdb/couch_replication_manager.erl
> b/src/couchdb/couch_replication_manager.erl
>>> index 5885732..7d1860e 100644
>>> --- a/src/couchdb/couch_replication_manager.erl
>>> +++ b/src/couchdb/couch_replication_manager.erl
>>> @@ -223,9 +223,12 @@ code_change(_OldVsn, State, _Extra) ->
>>>
>>>  changes_feed_loop() ->
>>>     {ok, RepDb} = ensure_rep_db_exists(),
>>> +    RepDbName = couch_db:name(RepDb),
>>> +    couch_db:close(RepDb),
>>>     Server = self(),
>>>     Pid = spawn_link(
>>>         fun() ->
>>> +            {ok, Db} = couch_db:open_int(RepDbName, [sys_db]),
>>>             ChangesFeedFun = couch_changes:handle_changes(
>>>                 #changes_args{
>>>                     include_docs = true,
>>> @@ -234,7 +237,7 @@ changes_feed_loop() ->
>>>                     db_open_options = [sys_db]
>>>                 },
>>>                 {json_req, null},
>>> -                RepDb
>>> +                Db
>>>             ),
>>>             ChangesFeedFun(
>>>                 fun({change, Change, _}, _) ->
>>> @@ -248,11 +251,11 @@ changes_feed_loop() ->
>>>                 (_, _) ->
>>>                     ok
>>>                 end
>>> -            )
>>> +            ),
>>> +            couch_db:close(Db)
>>>         end
>>>     ),
>>> -    couch_db:close(RepDb),
>>> -    {Pid, couch_db:name(RepDb)}.
>>> +    {Pid, RepDbName}.
>>>
>>>
>>>  has_valid_rep_id({Change}) ->
>>>
>>>
>>
>> Can't you ensure it in the process too ? What is the reason to have it
>> externally ?
>
> To return the name to the parent.
>
>>
>> - benoit
>>
>
> --
> Filipe David Manana,
>
> "Reasonable men adapt themselves to the world.
>  Unreasonable men adapt the world to themselves.
>  That's why all progress depends on unreasonable men."
>
ok.... So you could just retutn ?l2b(couch_config:get("replicator",
"db", "_replicator")).

Though it's probably safer ensure it first and it's probably the real
reason. I think a better change would be ensuring and opening it in
init, and close it in terminate. So we could eventually manage it on
code change.


- benoit

Re: git commit: Open replicator database in child process

Posted by Filipe David Manana <fd...@apache.org>.
On Wednesday, October 5, 2011, Benoit Chesneau <bc...@gmail.com> wrote:
> On Wed, Oct 5, 2011 at 2:12 AM,  <fd...@apache.org> wrote:
>> Updated Branches:
>>  refs/heads/master 3c24a94dd -> 0c7fbd3da
>>
>>
>> Open replicator database in child process
>>
>> This is more correct and less confusing.
>>
>>
>> Project: http://git-wip-us.apache.org/repos/asf/couchdb/repo
>> Commit: http://git-wip-us.apache.org/repos/asf/couchdb/commit/0c7fbd3d
>> Tree: http://git-wip-us.apache.org/repos/asf/couchdb/tree/0c7fbd3d
>> Diff: http://git-wip-us.apache.org/repos/asf/couchdb/diff/0c7fbd3d
>>
>> Branch: refs/heads/master
>> Commit: 0c7fbd3dab5bf13215def4349dbba7f689a22ac6
>> Parents: 3c24a94
>> Author: Filipe David Manana <fd...@apache.org>
>> Authored: Wed Oct 5 01:10:54 2011 +0100
>> Committer: Filipe David Manana <fd...@apache.org>
>> Committed: Wed Oct 5 01:12:45 2011 +0100
>>
>> ----------------------------------------------------------------------
>>  src/couchdb/couch_replication_manager.erl |   11 +++++++----
>>  1 files changed, 7 insertions(+), 4 deletions(-)
>> ----------------------------------------------------------------------
>>
>>
>>
http://git-wip-us.apache.org/repos/asf/couchdb/blob/0c7fbd3d/src/couchdb/couch_replication_manager.erl
>> ----------------------------------------------------------------------
>> diff --git a/src/couchdb/couch_replication_manager.erl
b/src/couchdb/couch_replication_manager.erl
>> index 5885732..7d1860e 100644
>> --- a/src/couchdb/couch_replication_manager.erl
>> +++ b/src/couchdb/couch_replication_manager.erl
>> @@ -223,9 +223,12 @@ code_change(_OldVsn, State, _Extra) ->
>>
>>  changes_feed_loop() ->
>>     {ok, RepDb} = ensure_rep_db_exists(),
>> +    RepDbName = couch_db:name(RepDb),
>> +    couch_db:close(RepDb),
>>     Server = self(),
>>     Pid = spawn_link(
>>         fun() ->
>> +            {ok, Db} = couch_db:open_int(RepDbName, [sys_db]),
>>             ChangesFeedFun = couch_changes:handle_changes(
>>                 #changes_args{
>>                     include_docs = true,
>> @@ -234,7 +237,7 @@ changes_feed_loop() ->
>>                     db_open_options = [sys_db]
>>                 },
>>                 {json_req, null},
>> -                RepDb
>> +                Db
>>             ),
>>             ChangesFeedFun(
>>                 fun({change, Change, _}, _) ->
>> @@ -248,11 +251,11 @@ changes_feed_loop() ->
>>                 (_, _) ->
>>                     ok
>>                 end
>> -            )
>> +            ),
>> +            couch_db:close(Db)
>>         end
>>     ),
>> -    couch_db:close(RepDb),
>> -    {Pid, couch_db:name(RepDb)}.
>> +    {Pid, RepDbName}.
>>
>>
>>  has_valid_rep_id({Change}) ->
>>
>>
>
> Can't you ensure it in the process too ? What is the reason to have it
> externally ?

To return the name to the parent.

>
> - benoit
>

-- 
Filipe David Manana,

"Reasonable men adapt themselves to the world.
 Unreasonable men adapt the world to themselves.
 That's why all progress depends on unreasonable men."