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--- a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restserver/src/site-docs/adoc/fragments/ct-restserver-io.adoc
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-//
-// ============LICENSE_START=======================================================
-// Copyright (C) 2016-2018 Ericsson. All rights reserved.
-// ================================================================================
-// This file is licensed under the CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE
-// Full license text at https://creativecommons.org/licenses/by/4.0/legalcode
-//
-// SPDX-License-Identifier: CC-BY-4.0
-// ============LICENSE_END=========================================================
-//
-// @author Sven van der Meer (sven.van.der.meer@ericsson.com)
-//
-
-== REST Server IO
-
-APEX supports a REST server for input and output.
-
-The REST server plugin always uses a synchronous mode.
-A client does a HTTP GET on the APEX REST server with the input event and receives the generated output event in the server reply.
-This means that for the REST server there has to always to be an input with an associated output.
-Input or output only are not permitted.
-
-The plugin will start a Grizzly server as REST server for a normal APEX engine.
-If the APEX engine is executed as a servlet, for instance inside Tomcat, then Tomcat will be used as REST server (this case requires configuration on Tomcat as well).
-
-Some configuration restrictions apply for all scenarios:
-
-- Minimum port: 1024
-- Maximum port: 65535
-- The media type is `application/json`, so this plugin does only work with the JSON Event protocol.
-
-The URL the client calls is created using
-
-- the configured host and port, e.g. `http://localhost:12345`
-- the standard path, e.g. `/apex/`
-- the name of the input/output, e.g. `FirstConsumer/`
-- the input or output name, e.g. `EventIn`.
-
-The examples above lead to the URL `http://localhost:12345/apex/FirstConsumer/EventIn`.
-
-A client can also get status information of the REST server using `/Status`, e.g. `http://localhost:12345/apex/FirstConsumer/Status`.
-
-
-=== REST Server Stand-alone
-
-We need to configure a REST server input and a REST server output.
-Input and output are associated with each other via there name.
-
-Timeouts for REST calls need to be set carefully.
-If they are too short, the call might timeout before a policy finished creating an event.
-
-The following example configures the input named as `MyConsumer` and associates an output named `MyProducer` with it.
-
-[source%nowrap,json]
-----
-"eventInputParameters": {
- "MyConsumer": {
- "carrierTechnologyParameters" : {
- "carrierTechnology" : "RESTSERVER", <1>
- "parameterClassName" :
- "org.onap.policy.apex.plugins.event.carrier.restserver.RESTServerCarrierTechnologyParameters",
- "parameters" : {
- "standalone" : true, <2>
- "host" : "localhost", <3>
- "port" : 12345 <4>
- }
- },
- "eventProtocolParameters":{
- "eventProtocol" : "JSON" <5>
- },
- "synchronousMode" : true, <6>
- "synchronousPeer" : "MyProducer", <7>
- "synchronousTimeout" : 500 <8>
- }
-}
-----
-<1> set REST server as carrier technology
-<2> set the server as stand-alone
-<3> set the server host
-<4> set the server listen port
-<5> use JSON event protocol
-<6> activate synchronous mode
-<7> associate an output `MyProducer`
-<8> set a timeout of 500 milliseconds
-
-
-The following example configures the output named as `MyProducer` and associates the input `MyConsumer` with it.
-Note that for the output there are no more paramters (such as host or port), since they are already configured in the associated input
-
-[source%nowrap,json]
-----
-"eventOutputParameters": {
- "MyProducer": {
- "carrierTechnologyParameters":{
- "carrierTechnology" : "RESTSERVER",
- "parameterClassName" :
- "org.onap.policy.apex.plugins.event.carrier.restserver.RESTServerCarrierTechnologyParameters"
- },
- "eventProtocolParameters":{
- "eventProtocol" : "JSON"
- },
- "synchronousMode" : true,
- "synchronousPeer" : "MyConsumer",
- "synchronousTimeout" : 500
- }
-}
-----
-
-
-=== REST Server Stand-alone, multi input
-
-Any number of input/output pairs for REST servers can be configured.
-For instance, we can configure an input `FirstConsumer` with output `FirstProducer` and an input `SecondConsumer` with output `SecondProducer`.
-Important is that there is always one pair of input/output.
-
-
-=== REST Server Stand-alone in Servlet
-
-If APEX is executed as a servlet, e.g. inside Tomcat, the configuration becomes easier since the plugin can now use Tomcat as the REST server.
-In this scenario, there are not parameters (port, host, etc.) and the key `standalone` must not be used (or set to false).
-
-For the Tomcat configuration, we need to add the REST server plugin, e.g.
-
-[source%nowrap,xml]
-----
-<servlet>
- ...
- <init-param>
- ...
- <param-value>org.onap.policy.apex.plugins.event.carrier.restserver</param-value>
- </init-param>
- ...
-</servlet>
-----