spring-integration-kafka : Multi message(s) - partition - consumer relationship

Question

Requirement:

Let say I am receiving message from 3 organisation and want to process them separately/orderly by separate consumers.

m-many messages from a given organisation example m1: many messages from oragnisation 1

p-partition c-consumer

for a given topic and consumer group.

m1  P1  c1
m2  P2  c2
m3  P3  c3

Now ,later at runtime new organisation join.SO,it should be new entry i.e new partition/new consumer

m1  P1  c1
m2  P2  c2
m3  P3  c3

m4  p4  c4

also,if for any reason any consumer dies of then the partion should not get distributed among the rest of the consumer but shld get replaced with new consumer in place of the recently lost one.Idea is to maintain 1 to 1 relation ship among the m-->p-->c,so as to keep track of what is coming from which organisation.

example: if c3 dies of,then it shld be replaced with c5 immediatetly w/o loosing data and start consuming from where c3 left and so on.

I am using spring-integration-kafka 1.2.1.RELEASE

is it possible?looking for best possible solution. Would be great, if get the code snippet/sample for producer and consumer for the version(1.2.1) mention above. Many thanks.