Reference manual for squid's configuraiton directives
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Configures a list of complementary services that will be applied
one-by-one, forming an adaptation chain or pipeline. This is useful
when Squid must perform different adaptations on the same message.
adaptation_service_chain chain_name service_name1 svc_name2 ...
applicable adaptation service from the chain is used first. The next
applicable service is applied to the successful adaptation results of
the previous service in the chain.
When adaptation starts, broken services are ignored as if they were
not a part of the chain. A broken service is a down optional service.
Request satisfaction terminates the adaptation chain because Squid
does not currently allow declaration of RESPMOD services at the
"reqmod_precache" vectoring point (see icap_service or ecap_service).
The services in a chain must be attached to the same vectoring point
(e.g., pre-cache) and use the same adaptation method (e.g., REQMOD).
A chain may contain a mix of optional and essential services. If an
essential adaptation fails (or the failure cannot be bypassed for
other reasons), the master transaction fails. Otherwise, the failure
is bypassed as if the failed adaptation service was not in the chain.
See also: adaptation_access adaptation_service_set
Example: adaptation_service_chain svcRequest requestLogger urlFilter leakDetector
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