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From Shu Kit Chan <chanshu...@gmail.com>
Subject Re: remap rules based on request header
Date Tue, 09 May 2017 20:56:01 GMT
Worked with Adi offline.
Basically we just need to specify the exact location of the lua
script. And it loaded now.

Thanks.

Kit

On Tue, May 9, 2017 at 10:19 AM, Adi Mallikarjuna Reddy V
<adimallikarjunareddy@gmail.com> wrote:
> 1) Which ats version you are using? - 5.3.x
> 2) How do you compile/get libtslua.so ? - internal build from experimental
> plugins
> 3) anything in error.log ? - nothing other than the one posted
>
> On Mon, May 8, 2017 at 12:22 PM, Shu Kit Chan <chanshukit@gmail.com> wrote:
>>
>> A few questions
>>
>> 1) Which ats version you are using?
>> 2) How do you compile/get libtslua.so ?
>> 3) anything in error.log ?
>>
>> Thanks.
>>
>>
>> On Mon, May 8, 2017 at 9:37 AM, Adi Mallikarjuna Reddy V
>> <adimallikarjunareddy@gmail.com> wrote:
>> > its libtslua.so, we built it as this.
>> >
>> > didnt work after removing @pristine_host_hdr=1 and enabling the same
>> > through
>> > lua script.
>> >
>> >
>> > I see the same error after above change. Looks like something to do with
>> > initialization of plugin.
>> >
>> > Thanks
>> > Adi
>> >
>> > On Mon, May 8, 2017 at 9:25 AM, Chou, Peter <pbchou@labs.att.com> wrote:
>> >>
>> >> Can you confirm under $PREFIX/libexec whether your so is libtslua.so or
>> >> just tslua.so?
>> >>
>> >>
>> >>
>> >> From: Adi Mallikarjuna Reddy V [mailto:adimallikarjunareddy@gmail.com]
>> >> Sent: Monday, May 08, 2017 9:19 AM
>> >> To: users@trafficserver.apache.org
>> >> Subject: Re: remap rules based on request header
>> >>
>> >>
>> >>
>> >> remap rule
>> >>
>> >>
>> >>
>> >> map /random_path http://dummy_destination.com/ @pristine_host_hdr=1
>> >> @plugin=libtslua.so @pparam=lua_remap.lua
>> >>
>> >>
>> >>
>> >> script - lua_remap.lua
>> >>
>> >>
>> >>
>> >> function do_remap()
>> >>
>> >>     ts.client_request.set_url_host('actual_destination.com')
>> >>
>> >>     ts.client_request.set_url_port(80)
>> >>
>> >>     ts.client_request.set_url_scheme('http')
>> >>
>> >>     return TS_LUA_REMAP_DID_REMAP
>> >>
>> >> end
>> >>
>> >> No extra info with debug tag ts_lua enabled, as this seems to be
>> >> failing
>> >> to parse the remap config itself.
>> >>
>> >>
>> >>
>> >> Thanks
>> >>
>> >> Adi
>> >>
>> >>
>> >>
>> >> On Mon, May 8, 2017 at 9:13 AM, Jeremy Payne <jp557198@gmail.com>
>> >> wrote:
>> >>
>> >> verify your remap rules and/or lua scripts to ensure they are
>> >> syntactically correct.
>> >>
>> >>
>> >>
>> >> also enable debug.. .may provide further insight..
>> >>
>> >>
>> >>
>> >> can you also share your remap file and corresponding lua scripts ?
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >> On Mon, May 8, 2017 at 11:00 AM, Adi Mallikarjuna Reddy V
>> >> <adimallikarjunareddy@gmail.com> wrote:
>> >>
>> >> After adding lua plugin with remap rule in remap.config and writing
>> >> some
>> >> sample code mentioned in
>> >>
>> >> https://docs.trafficserver.apache.org/en/latest/admin-guide/plugins/ts_lua.en.html#ts-client-request-set-url-host
>> >> I see the following error in traffic server.
>> >>
>> >>
>> >>
>> >> [May  8 08:57:44.851] Server {0x2aeb0862c2c0} WARNING: Failed to create
>> >> new instance for plugin libtslua.so (not a TS_SUCCESS return)
>> >>
>> >> [May  8 08:57:44.851] Server {0x2aeb0862c2c0} WARNING: Could not add
>> >> rule
>> >> at line #25; Aborting!
>> >>
>> >> [May  8 08:57:44.851] Server {0x2aeb0862c2c0} WARNING: [ReverseProxy]
>> >> Can't create new remap instance for plugin "libtslua.so" -
>> >> [TSRemapNewInstance] ts_lua_add_module failed at line 25
>> >>
>> >> [May  8 08:57:44.852] Server {0x2aeb0862c2c0} WARNING: something failed
>> >> during BuildTable() -- check your remap plugins!
>> >>
>> >> [May  8 08:57:44.852] Server {0x2aeb0862c2c0} WARNING: Can not load the
>> >> remap table, exiting out!
>> >>
>> >>
>> >>
>> >> Is there any thing that I am missing out?
>> >>
>> >>
>> >>
>> >> Thanks
>> >>
>> >> Adi
>> >>
>> >>
>> >>
>> >>
>> >>
>> >> On Sun, Feb 5, 2017 at 11:39 PM, Shu Kit Chan <chanshukit@gmail.com>
>> >> wrote:
>> >>
>> >> No, you don't need lua runtime on your host. Just compile the
>> >> experimental plugin and that's it. More information here -
>> >>
>> >>
>> >> https://docs.trafficserver.apache.org/en/latest/admin-guide/plugins/ts_lua.en.html
>> >>
>> >> Thanks.
>> >>
>> >> On Wed, Jan 25, 2017 at 5:10 PM, Adi Mallikarjuna Reddy V
>> >>
>> >> <adimallikarjunareddy@gmail.com> wrote:
>> >> > For this to work, do I have to install Lua runtime on my host?
>> >> >
>> >> > On Wed, Jan 25, 2017 at 10:49 AM, Jeremy Payne <jp557198@gmail.com>
>> >> > wrote:
>> >> >>
>> >> >> i use the lua plugin to change origin host based on certain
>> >> >> conditions.
>> >> >>
>> >> >>
>> >> >>
>> >> >>
>> >> >> https://docs.trafficserver.apache.org/en/latest/admin-guide/plugins/ts_lua.en.html#ts-client-request-set-url-host
>> >> >>
>> >> >> On Wed, Jan 25, 2017 at 12:33 PM, Adi Mallikarjuna Reddy V
>> >> >> <adimallikarjunareddy@gmail.com> wrote:
>> >> >>>
>> >> >>> any help with this is greatly appreciated. Is there a debug
flag to
>> >> >>> check
>> >> >>> header rewrite functionality?
>> >> >>>
>> >> >>> On Tue, Jan 24, 2017 at 1:42 PM, Adi Mallikarjuna Reddy V
>> >> >>> <adimallikarjunareddy@gmail.com> wrote:
>> >> >>>>
>> >> >>>> Thanks Sudheer for the pointer. I tried the following and
it looks
>> >> >>>> like
>> >> >>>> this condition is not working
>> >> >>>>
>> >> >>>> cond %{READ_REQUEST_HDR_HOOK}
>> >> >>>>
>> >> >>>> cond %{CLIENT-HEADER:DEVHOST} = dev103
>> >> >>>>
>> >> >>>> set-destination HOST dev103.abc.com [L]
>> >> >>>>
>> >> >>>>
>> >> >>>>
>> >> >>>> and
>> >> >>>>
>> >> >>>> curl -H 'DEVHOST:dev103' 'http://actual_ats_endpoint/path'
-v
>> >> >>>> doesnt
>> >> >>>> take to that host specified.
>> >> >>>>
>> >> >>>>
>> >> >>>>
>> >> >>>> Thanks
>> >> >>>>
>> >> >>>> Adi
>> >> >>>>
>> >> >>>>
>> >> >>>>
>> >> >>>> On Tue, Jan 24, 2017 at 12:28 PM, Sudheer Vinukonda
>> >> >>>> <sudheervinukonda@yahoo.com> wrote:
>> >> >>>>>
>> >> >>>>> You'd need to specify a preremap request hook (such
as Read
>> >> >>>>> Request
>> >> >>>>> Header) in your rules. I think the default hook is
Send Response
>> >> >>>>> Header.
>> >> >>>>>
>> >> >>>>> - Sudheer
>> >> >>>>>
>> >> >>>>> On Jan 24, 2017, at 12:24 PM, Adi Mallikarjuna Reddy
V
>> >> >>>>> <adimallikarjunareddy@gmail.com> wrote:
>> >> >>>>>
>> >> >>>>> Ok, I tried the following one with no luck. The requests
are
>> >> >>>>> always
>> >> >>>>> going to the new host without the customer header value
also.
>> >> >>>>>
>> >> >>>>> cond %{HEADER:DEV_HOST} = "dev102"
>> >> >>>>> set-destination HOST dev102.abc.com [L]
>> >> >>>>>
>> >> >>>>>
>> >> >>>>> my remap rule is
>> >> >>>>>
>> >> >>>>> map / http://abc.com/ @pristine_host_hdr=1
>> >> >>>>> @plugin=header_rewrite.so
>> >> >>>>> @pparam=my_header_rules.conf
>> >> >>>>>
>> >> >>>>>
>> >> >>>>> Am I missing anything important here?
>> >> >>>>>
>> >> >>>>>
>> >> >>>>> Thanks
>> >> >>>>>
>> >> >>>>> Adi
>> >> >>>>>
>> >> >>>>>
>> >> >>>>> On Tue, Jan 24, 2017 at 11:46 AM, Jeremy Payne
>> >> >>>>> <jp557198@gmail.com>
>> >> >>>>> wrote:
>> >> >>>>>>
>> >> >>>>>> the lua plugin also has this functionality although
may be
>> >> >>>>>> somewhat
>> >> >>>>>> overkill for your needs.
>> >> >>>>>>
>> >> >>>>>>
>> >> >>>>>> On Tue, Jan 24, 2017 at 1:43 PM, Adi Mallikarjuna
Reddy V
>> >> >>>>>> <adimallikarjunareddy@gmail.com> wrote:
>> >> >>>>>>>
>> >> >>>>>>> So to achieve my use case, can I try something
like this?
>> >> >>>>>>>
>> >> >>>>>>> map / http://b.bar.com @plugin=header_rewrite.so
>> >> >>>>>>> @pparam=rules1.conf
>> >> >>>>>>>
>> >> >>>>>>> and my rules1.conf has
>> >> >>>>>>>
>> >> >>>>>>> cond %{HEADER:MY_HEADER} = "foo"
>> >> >>>>>>> set-destination HOST mobile.bar.com [L]
>> >> >>>>>>>
>> >> >>>>>>> This should forward the request to mobile.bar.com
if the
>> >> >>>>>>> request
>> >> >>>>>>> has
>> >> >>>>>>> 'MY_HEADER' with value 'foo'.
>> >> >>>>>>>
>> >> >>>>>>>
>> >> >>>>>>> Thanks
>> >> >>>>>>>
>> >> >>>>>>> Adi
>> >> >>>>>>>
>> >> >>>>>>>
>> >> >>>>>>>
>> >> >>>>>>> On Tue, Jan 24, 2017 at 11:36 AM, Brian Geffon
>> >> >>>>>>> <briangeffon@gmail.com> wrote:
>> >> >>>>>>>>
>> >> >>>>>>>> Sorry I think I meant header_rewrite.
>> >> >>>>>>>>
>> >> >>>>>>>> Brian
>> >> >>>>>>>>
>> >> >>>>>>>>
>> >> >>>>>>>> On Tue, Jan 24, 2017, 11:26 Brian Geffon
>> >> >>>>>>>> <briangeffon@gmail.com>
>> >> >>>>>>>> wrote:
>> >> >>>>>>>>>
>> >> >>>>>>>>> There is a regex_remap plugin that
is what you would want,
>> >> >>>>>>>>> take
>> >> >>>>>>>>> a
>> >> >>>>>>>>> look in plugins/
>> >> >>>>>>>>>
>> >> >>>>>>>>> Brian
>> >> >>>>>>>>>
>> >> >>>>>>>>>
>> >> >>>>>>>>> On Tue, Jan 24, 2017, 11:25 Adi Mallikarjuna
Reddy V
>> >> >>>>>>>>> <adimallikarjunareddy@gmail.com>
wrote:
>> >> >>>>>>>>>>
>> >> >>>>>>>>>> Is there a config that allows to
change remap rule based on
>> >> >>>>>>>>>> the
>> >> >>>>>>>>>> incoming header?
>> >> >>>>>>>>>>
>> >> >>>>>>>>>>
>> >> >>>>>>>>>> My use case is , if I send a custom
header in the request,
>> >> >>>>>>>>>> the
>> >> >>>>>>>>>> remap rule should be changed to
different one than the
>> >> >>>>>>>>>> default
>> >> >>>>>>>>>> one
>> >> >>>>>>>>>> configured.
>> >> >>>>>>>>>>
>> >> >>>>>>>>>>
>> >> >>>>>>>>>> Thanks
>> >> >>>>>>>>>>
>> >> >>>>>>>>>> Adi
>> >> >>>>>>>
>> >> >>>>>>>
>> >> >>>>>>
>> >> >>>>>
>> >> >>>>
>> >> >>>
>> >> >>
>> >> >
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >
>> >
>
>

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