mosquitto-users team mailing list archive

[Roger Light <roger@xxxxxxxxxx>]

Thanks Paul, I do try. This was a happy set of circumstances - good
description, easy fix and some available time. I've been a bit busy
recently so there are other examples that haven't worked quite so
well!

Cheers,

Roger


On Tue, Dec 10, 2013 at 10:14 AM, Paul Fremantle <paul@xxxxxxxxxxxxx> wrote:
> Roger
>
> That is impressive. Thanks for all your hard work on Mosquitto.... its a
> great project and brilliant to see such fast turnaround on bugs.
>
> Paul
>
>
> On Mon, Dec 9, 2013 at 9:53 PM, Roger Light <roger@xxxxxxxxxx> wrote:
>>
>> Hi Marcus,
>>
>> It is a bug. Thanks for the very detailed description, it made it easy
>> to figure out. I guessed what the problem was before I finished
>> recreating it actually, so I'm sorry it was hard for you to find where
>> things weren't working.
>>
>> I've pushed a fix on the 1.3 branch which should be very easy to use on
>> 1.2.3:
>>
>>
>> https://bitbucket.org/oojah/mosquitto/commits/a8e563fc0f53873500d31f217133540504735cdc
>>
>> Thanks!
>>
>> Roger
>>
>>
>> On Mon, Dec 9, 2013 at 3:23 PM, Marcus Rejås <marcus.rejas@xxxxxxxxxx>
>> wrote:
>> > Problem: Messages are not being retained under some circumstances when
>> > persistence is being used.
>> >
>> > Setup:
>> >
>> > Mosquitto 1.2.3
>> >
>> > BROKER A   <-- BRIDGE -->  BROKER B
>> >
>> > The bridge is initiated from Broker B.
>> >
>> > Config A
>> >
>> >   persistence true
>> >   persistence_file mosquitto-A.db
>> >   persistence_location /tmp/
>> >   autosave_interval 3600
>> >
>> >   port 1883
>> >
>> >
>> > Config B
>> >
>> >   persistence true
>> >   persistence_file mosquitto-B.db
>> >   persistence_location /tmp/
>> >   autosave_interval 3600
>> >
>> >   port 1884
>> >
>> >   connection A
>> >   address 127.0.0.1:1883
>> >   topic # both
>> >
>> >
>> > When starting with no persistence files it works as we expects.
>> >
>> > Setting a retained message on either A or B makes it retained on both
>> > brokers.
>> >
>> > Setting on A and B
>> >
>> >   $ mosquitto_pub -p 1883 -t retainedA -m test -r
>> >   $ mosquitto_pub -p 1884 -t retainedB -m test -r
>> >
>> > Verifying that the messages are retained.
>> >
>> >   $ mosquitto_sub -p 1883 -t \# -v
>> >   retainedA test
>> >   retainedB test
>> >
>> >   $ mosquitto_sub -p 1884 -t \# -v
>> >   retainedA test
>> >   retainedB test
>> >
>> > Works as expected.
>> >
>> > Removing the retained messages by sending a null-message to the topics
>> > also works as expected.
>> >
>> > But, restarting the brokers (making them read the persistence database)
>> > makes it behave different.
>> >
>> >   $ mosquitto_pub -p 1883 -t retainedA -m test -r
>> >   $ mosquitto_pub -p 1884 -t retainedB -m test -r
>> >
>> >   $ mosquitto_sub -p 1883 -t \# -v
>> >   retainedA test
>> >   retainedB test
>> >
>> >   $ mosquitto_sub -p 1884 -t \# -v
>> >   retainedB test
>> >
>> > Only the retained message set directly on B is set on B. Also remove
>> > retained topics on B via the bridge does not work.
>> >
>> > This was little hard to find since it only occurs after restarting with
>> > a persistence file present.
>> >
>> > Is this a bug or did we do something wrong?
>> >
>> > Regards
>> >
>> > Marcus
>> >
>> > --
>> > Marcus Rejås
>> > ALLEATO
>> > Tel. +46 176 250103
>> > Mobilnr: +46 70 266 79 85
>> > marcus.rejas@xxxxxxxxxx
>> > http://www.alleato.se
>> >
>> > --
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>>
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>