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Posted to users@felix.apache.org by Allen Lau <al...@gmail.com> on 2009/01/19 21:32:37 UTC
OBR bundle installation order?
Hi,
Was wondering if there was a way to force the order of bundle installation
with OBR?
Basically I want to have the dependent bundles installed and optionally
started first before the target bundle.
For example. I have Bundle B1, B2, B3
where B1 depends on B2 which depends on B3.
If I use OBR to deploy B1, I notice that most of the time B1 is installed
first but doesn't it make more sense to have B3,B2 deployed first?
Thanks,
Allen
Re: OBR bundle installation order?
Posted by "Richard S. Hall" <he...@ungoverned.org>.
Install order shouldn't have any impact.
-> richard
Allen Lau wrote:
> Hi,
>
> Was wondering if there was a way to force the order of bundle installation
> with OBR?
>
> Basically I want to have the dependent bundles installed and optionally
> started first before the target bundle.
>
> For example. I have Bundle B1, B2, B3
>
> where B1 depends on B2 which depends on B3.
>
> If I use OBR to deploy B1, I notice that most of the time B1 is installed
> first but doesn't it make more sense to have B3,B2 deployed first?
>
> Thanks,
> Allen
>
>
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Re: OBR bundle installation order?
Posted by "Richard S. Hall" <he...@ungoverned.org>.
Allen Lau wrote:
> Yes, sorry, I do mean the start order. You are right, installation order
> doesn't matter.
>
So, in that case, yes, you are out of luck. OBR could be modified to try
to start bundles according to the dependency graph, which could help
you. If you want to open a feature request against OBR in JIRA, feel
free. In the long run, it is definitely best to avoid ordering if you can.
-> richard
> Really appreciate the quick responses.
>
> Thanks,
> Allen
>
> On Tue, Jan 20, 2009 at 1:23 PM, Richard S. Hall <he...@ungoverned.org>wrote:
>
>
>> Allen,
>>
>> I still don't see how the install order has any impact at all. Do you
>> actually mean the start order?
>>
>> -> richard
>>
>>
>> Allen Lau wrote:
>>
>>
>>> Peter, Richard,
>>>
>>> Thanks for the replies. Your are right, homegrown bundles should not rely
>>> on this mechanism. But for practical purposes, some 3rd-party bundles
>>> I'm
>>> installing do and as such I was looking at the functionality as a bridge
>>> until those bundles get fixed.
>>>
>>> I think I'll just need to solve it as a policy/process thing during
>>> deployment for problematic bundles.
>>>
>>> Thanks,
>>> Allen
>>>
>>> On Mon, Jan 19, 2009 at 11:04 PM, Peter Kriens <peter.kriens@aqute.biz
>>>
>>>> wrote:
>>>>
>>>
>>>
>>>> OSGi has -no- installation order. If your bundles depend on this kind of
>>>> ordering (or startlevel ordering) they were not well designed and -will-
>>>> break one day. The reason is that a bundle can always get updated when
>>>> the
>>>> system is running. If other bundles depend on this bundle without
>>>> explicitly
>>>> specifying the dependencies, they are toast.
>>>>
>>>> Believe me, do no even try to control the start order. That is what we
>>>> got
>>>> dynamic services for.
>>>>
>>>> Kind regards,
>>>>
>>>> Peter Kriens
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On 19 jan 2009, at 21:32, Allen Lau wrote:
>>>>
>>>> Hi,
>>>>
>>>>
>>>>
>>>>> Was wondering if there was a way to force the order of bundle
>>>>> installation
>>>>> with OBR?
>>>>>
>>>>> Basically I want to have the dependent bundles installed and optionally
>>>>> started first before the target bundle.
>>>>>
>>>>> For example. I have Bundle B1, B2, B3
>>>>>
>>>>> where B1 depends on B2 which depends on B3.
>>>>>
>>>>> If I use OBR to deploy B1, I notice that most of the time B1 is
>>>>> installed
>>>>> first but doesn't it make more sense to have B3,B2 deployed first?
>>>>>
>>>>> Thanks,
>>>>> Allen
>>>>>
>>>>>
>>>>>
>>>>>
>>>> ---------------------------------------------------------------------
>>>> To unsubscribe, e-mail: users-unsubscribe@felix.apache.org
>>>> For additional commands, e-mail: users-help@felix.apache.org
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@felix.apache.org
>> For additional commands, e-mail: users-help@felix.apache.org
>>
>>
>>
>
>
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Re: OBR bundle installation order?
Posted by Allen Lau <al...@gmail.com>.
Richard,
Yes, sorry, I do mean the start order. You are right, installation order
doesn't matter.
Really appreciate the quick responses.
Thanks,
Allen
On Tue, Jan 20, 2009 at 1:23 PM, Richard S. Hall <he...@ungoverned.org>wrote:
> Allen,
>
> I still don't see how the install order has any impact at all. Do you
> actually mean the start order?
>
> -> richard
>
>
> Allen Lau wrote:
>
>> Peter, Richard,
>>
>> Thanks for the replies. Your are right, homegrown bundles should not rely
>> on this mechanism. But for practical purposes, some 3rd-party bundles
>> I'm
>> installing do and as such I was looking at the functionality as a bridge
>> until those bundles get fixed.
>>
>> I think I'll just need to solve it as a policy/process thing during
>> deployment for problematic bundles.
>>
>> Thanks,
>> Allen
>>
>> On Mon, Jan 19, 2009 at 11:04 PM, Peter Kriens <peter.kriens@aqute.biz
>> >wrote:
>>
>>
>>
>>> OSGi has -no- installation order. If your bundles depend on this kind of
>>> ordering (or startlevel ordering) they were not well designed and -will-
>>> break one day. The reason is that a bundle can always get updated when
>>> the
>>> system is running. If other bundles depend on this bundle without
>>> explicitly
>>> specifying the dependencies, they are toast.
>>>
>>> Believe me, do no even try to control the start order. That is what we
>>> got
>>> dynamic services for.
>>>
>>> Kind regards,
>>>
>>> Peter Kriens
>>>
>>>
>>>
>>>
>>>
>>>
>>> On 19 jan 2009, at 21:32, Allen Lau wrote:
>>>
>>> Hi,
>>>
>>>
>>>> Was wondering if there was a way to force the order of bundle
>>>> installation
>>>> with OBR?
>>>>
>>>> Basically I want to have the dependent bundles installed and optionally
>>>> started first before the target bundle.
>>>>
>>>> For example. I have Bundle B1, B2, B3
>>>>
>>>> where B1 depends on B2 which depends on B3.
>>>>
>>>> If I use OBR to deploy B1, I notice that most of the time B1 is
>>>> installed
>>>> first but doesn't it make more sense to have B3,B2 deployed first?
>>>>
>>>> Thanks,
>>>> Allen
>>>>
>>>>
>>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: users-unsubscribe@felix.apache.org
>>> For additional commands, e-mail: users-help@felix.apache.org
>>>
>>>
>>>
>>>
>>
>>
>>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@felix.apache.org
> For additional commands, e-mail: users-help@felix.apache.org
>
>
Re: OBR bundle installation order?
Posted by "Richard S. Hall" <he...@ungoverned.org>.
Allen,
I still don't see how the install order has any impact at all. Do you
actually mean the start order?
-> richard
Allen Lau wrote:
> Peter, Richard,
>
> Thanks for the replies. Your are right, homegrown bundles should not rely
> on this mechanism. But for practical purposes, some 3rd-party bundles I'm
> installing do and as such I was looking at the functionality as a bridge
> until those bundles get fixed.
>
> I think I'll just need to solve it as a policy/process thing during
> deployment for problematic bundles.
>
> Thanks,
> Allen
>
> On Mon, Jan 19, 2009 at 11:04 PM, Peter Kriens <pe...@aqute.biz>wrote:
>
>
>> OSGi has -no- installation order. If your bundles depend on this kind of
>> ordering (or startlevel ordering) they were not well designed and -will-
>> break one day. The reason is that a bundle can always get updated when the
>> system is running. If other bundles depend on this bundle without explicitly
>> specifying the dependencies, they are toast.
>>
>> Believe me, do no even try to control the start order. That is what we got
>> dynamic services for.
>>
>> Kind regards,
>>
>> Peter Kriens
>>
>>
>>
>>
>>
>>
>> On 19 jan 2009, at 21:32, Allen Lau wrote:
>>
>> Hi,
>>
>>> Was wondering if there was a way to force the order of bundle installation
>>> with OBR?
>>>
>>> Basically I want to have the dependent bundles installed and optionally
>>> started first before the target bundle.
>>>
>>> For example. I have Bundle B1, B2, B3
>>>
>>> where B1 depends on B2 which depends on B3.
>>>
>>> If I use OBR to deploy B1, I notice that most of the time B1 is installed
>>> first but doesn't it make more sense to have B3,B2 deployed first?
>>>
>>> Thanks,
>>> Allen
>>>
>>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@felix.apache.org
>> For additional commands, e-mail: users-help@felix.apache.org
>>
>>
>>
>
>
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Re: OBR bundle installation order?
Posted by Allen Lau <al...@gmail.com>.
Peter, Richard,
Thanks for the replies. Your are right, homegrown bundles should not rely
on this mechanism. But for practical purposes, some 3rd-party bundles I'm
installing do and as such I was looking at the functionality as a bridge
until those bundles get fixed.
I think I'll just need to solve it as a policy/process thing during
deployment for problematic bundles.
Thanks,
Allen
On Mon, Jan 19, 2009 at 11:04 PM, Peter Kriens <pe...@aqute.biz>wrote:
> OSGi has -no- installation order. If your bundles depend on this kind of
> ordering (or startlevel ordering) they were not well designed and -will-
> break one day. The reason is that a bundle can always get updated when the
> system is running. If other bundles depend on this bundle without explicitly
> specifying the dependencies, they are toast.
>
> Believe me, do no even try to control the start order. That is what we got
> dynamic services for.
>
> Kind regards,
>
> Peter Kriens
>
>
>
>
>
>
> On 19 jan 2009, at 21:32, Allen Lau wrote:
>
> Hi,
>>
>> Was wondering if there was a way to force the order of bundle installation
>> with OBR?
>>
>> Basically I want to have the dependent bundles installed and optionally
>> started first before the target bundle.
>>
>> For example. I have Bundle B1, B2, B3
>>
>> where B1 depends on B2 which depends on B3.
>>
>> If I use OBR to deploy B1, I notice that most of the time B1 is installed
>> first but doesn't it make more sense to have B3,B2 deployed first?
>>
>> Thanks,
>> Allen
>>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@felix.apache.org
> For additional commands, e-mail: users-help@felix.apache.org
>
>
Re: OBR bundle installation order?
Posted by Peter Kriens <pe...@aqute.biz>.
OSGi has -no- installation order. If your bundles depend on this kind
of ordering (or startlevel ordering) they were not well designed and -
will- break one day. The reason is that a bundle can always get
updated when the system is running. If other bundles depend on this
bundle without explicitly specifying the dependencies, they are toast.
Believe me, do no even try to control the start order. That is what we
got dynamic services for.
Kind regards,
Peter Kriens
On 19 jan 2009, at 21:32, Allen Lau wrote:
> Hi,
>
> Was wondering if there was a way to force the order of bundle
> installation
> with OBR?
>
> Basically I want to have the dependent bundles installed and
> optionally
> started first before the target bundle.
>
> For example. I have Bundle B1, B2, B3
>
> where B1 depends on B2 which depends on B3.
>
> If I use OBR to deploy B1, I notice that most of the time B1 is
> installed
> first but doesn't it make more sense to have B3,B2 deployed first?
>
> Thanks,
> Allen
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