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authorramverma <ram.krishna.verma@ericsson.com>2018-07-31 18:25:39 +0100
committerramverma <ram.krishna.verma@ericsson.com>2018-07-31 18:27:31 +0100
commitaf74a6270d6ab6badf04a97495a6ef8ccded9b4b (patch)
tree2c7a536e54207a0870ca2008ce457a64de917ab9 /services/services-engine/src/site-docs/adoc/fragments
parent9e318f20f2e64970bf3c2e3a5532c516231a6f8a (diff)
Adding first set of apex-pdp document changes
Adding document changes for auth, context, core, model, services & the main apex-pdp module. Change-Id: Id0d026baa258f1dc6998978f9911f3c4a73b5b3b Issue-ID: POLICY-867 Signed-off-by: ramverma <ram.krishna.verma@ericsson.com>
Diffstat (limited to 'services/services-engine/src/site-docs/adoc/fragments')
-rw-r--r--services/services-engine/src/site-docs/adoc/fragments/config-example.adoc103
-rw-r--r--services/services-engine/src/site-docs/adoc/fragments/config-general-format.adoc65
-rw-r--r--services/services-engine/src/site-docs/adoc/fragments/config-interfaces-general.adoc124
-rw-r--r--services/services-engine/src/site-docs/adoc/fragments/config-service-parameters.adoc47
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diff --git a/services/services-engine/src/site-docs/adoc/fragments/config-example.adoc b/services/services-engine/src/site-docs/adoc/fragments/config-example.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)
+//
+
+== A configuration example
+
+The following example loads all available plug-ins.
+
+Events are consumed from a Websocket, APEX as client.
+Consumed event format is JSON.
+
+Events are produced to Kafka.
+Produced event format is XML.
+
+[source%nowrap,json]
+----
+{
+ "engineServiceParameters" : {
+ "name" : "MyApexEngine",
+ "version" : "0.0.1",
+ "id" : 45,
+ "instanceCount" : 4,
+ "deploymentPort" : 12345,
+ "policyModelFileName" : "examples/models/some-model.json",
+ "engineParameters" : {
+ "executorParameters" : {
+ "JAVASCRIPT" : {
+ "parameterClassName" :
+ "org.onap.policy.apex.plugins.executor.javascript.JavascriptExecutorParameters"
+ },
+ "JYTHON" : {
+ "parameterClassName" :
+ "org.onap.policy.apex.plugins.executor.jython.JythonExecutorParameters"
+ },
+ "JRUBY" : {
+ "parameterClassName" :
+ "org.onap.policy.apex.plugins.executor.jruby.JrubyExecutorParameters"
+ },
+ "JAVA" : {
+ "parameterClassName" :
+ "org.onap.policy.apex.plugins.executor.java.JavaExecutorParameters"
+ },
+ "MVEL" : {
+ "parameterClassName" :
+ "org.onap.policy.apex.plugins.executor.mvel.MVELExecutorParameters"
+ }
+ },
+ "contextParameters" : {
+ "parameterClassName" :
+ "org.onap.policy.apex.context.parameters.ContextParameters",
+ "schemaParameters" : {
+ "Avro":{
+ "parameterClassName" :
+ "org.onap.policy.apex.plugins.context.schema.avro.AvroSchemaHelperParameters"
+ }
+ }
+ }
+ }
+ },
+ "producerCarrierTechnologyParameters" : {
+ "carrierTechnology" : "KAFKA",
+ "parameterClassName" :
+ "org.onap.policy.apex.plugins.event.carrier.kafka.KAFKACarrierTechnologyParameters",
+ "parameters" : {
+ "bootstrapServers" : "localhost:49092",
+ "acks" : "all",
+ "retries" : 0,
+ "batchSize" : 16384,
+ "lingerTime" : 1,
+ "bufferMemory" : 33554432,
+ "producerTopic" : "apex-out",
+ "keySerializer" : "org.apache.kafka.common.serialization.StringSerializer",
+ "valueSerializer" : "org.apache.kafka.common.serialization.StringSerializer"
+ }
+ },
+ "producerEventProtocolParameters" : {
+ "eventProtocol" : "XML",
+ "parameterClassName" :
+ "org.onap.policy.apex.plugins.event.protocol.xml.XMLEventProtocolParameters"
+ },
+ "consumerCarrierTechnologyParameters" : {
+ "carrierTechnology" : "WEBSOCKET",
+ "parameterClassName" :
+ "org.onap.policy.apex.plugins.event.carrier.websocket.WEBSOCKETCarrierTechnologyParameters",
+ "parameters" : {
+ "host" : "localhost",
+ "port" : 88888
+ }
+ },
+ "consumerEventProtocolParameters" : {
+ "eventProtocol" : "JSON"
+ }
+}
+----
diff --git a/services/services-engine/src/site-docs/adoc/fragments/config-general-format.adoc b/services/services-engine/src/site-docs/adoc/fragments/config-general-format.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)
+//
+
+== General Configuration Format
+
+The APEX configuration file is a JSON file containing a few main blocks for different parts of the configuration.
+Each block then holds the configuration details.
+The following code shows the main blocks:
+
+[source%nowrap,json]
+----
+{
+ "engineServiceParameters":{
+ ... // <1>
+ "engineParameters":{ <2>
+ "engineParameters":{...}, <3>
+ "contextParameters":{...} <4>
+ }
+ },
+ "eventInputParameters":{ <5>
+ "input1":{ <6>
+ "carrierTechnologyParameters":{...},
+ "eventProtocolParameters":{...}
+ },
+ "input2":{...}, <7>
+ "carrierTechnologyParameters":{...},
+ "eventProtocolParameters":{...}
+ },
+ ... // <8>
+ },
+ "eventOutputParameters":{ <9>
+ "output1":{ <10>
+ "carrierTechnologyParameters":{...},
+ "eventProtocolParameters":{...}
+ },
+ "output2":{ <11>
+ "carrierTechnologyParameters":{...},
+ "eventProtocolParameters":{...}
+ },
+ ... // <12>
+ }
+}
+----
+<1> main engine configuration
+<2> engine parameters for plugin configurations (execution environments and context handling)
+<3> engine specific parameters, mainly for executor plugins
+<4> context specific parameters, e.g. for context schemas, persistence, etc.
+<5> configuration of the input interface
+<6> an example input called `input1` with carrier technology and event protocol
+<7> an example input called `input2` with carrier technology and event protocol
+<8> any further input configuration
+<9> configuration of the output interface
+<10> an example output called `output1` with carrier technology and event protocol
+<11> an example output called `output2` with carrier technology and event protocol
+<12> any further output configuration
diff --git a/services/services-engine/src/site-docs/adoc/fragments/config-interfaces-general.adoc b/services/services-engine/src/site-docs/adoc/fragments/config-interfaces-general.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)
+//
+
+== Input and Output Interfaces
+
+An APEX engine has two main interfaces:
+
+- An _input_ interface to receive events: also known as ingress interface or consumer, receiving (consuming) events commonly named triggers, and
+- An _output_ interface to publish produced events: also known as egress interface or producer, sending (publishing) events commonly named actions or action events.
+
+The input and output interface is configured in terms of inputs and outputs, respectively.
+Each input and output is a combination of a carrier technology and an event protocol.
+Carrier technologies and event protocols are provided by plugins, each with its own specific configuration.
+Most carrier technologies can be configured for input as well as output.
+Most event protocols can be used for all carrier technologies.
+One exception is the JMS object event protocol, which can only be used for the JMS carrier technology.
+Some further restrictions apply (for instance for carrier technologies using bi- or uni-directional modes).
+
+Input and output interface can be configured separately, in isolation, with any number of carrier technologies.
+The resulting general configuration options are:
+
+- Input interface with one or more inputs
+ ** each input with a carrier technology and an event protocol
+ ** some inputs with optional synchronous mode
+ ** some event protocols with additional parameters
+- Output interface with one or more outputs
+ ** each output with a carrier technology and an event encoding
+ ** some outputs with optional synchronous mode
+ ** some event protocols with additional parameters
+
+The configuration for input and output is contained in `eventInputParameters` and `eventOutputParameters`, respectively.
+Inside here, one can configure any number of inputs and outputs.
+Each of them needs to have a unique identifier (name), the content of the name is free form.
+The example below shows a configuration for two inputs and two outputs.
+
+[source%nowrap,json]
+----
+"eventInputParameters": { <1>
+ "FirstConsumer": { <2>
+ "carrierTechnologyParameters" : {...}, <3>
+ "eventProtocolParameters":{...}, <4>
+ ... <5>
+ },
+ "SecondConsumer": { <6>
+ "carrierTechnologyParameters" : {...}, <7>
+ "eventProtocolParameters":{...}, <8>
+ ... <9>
+ },
+},
+"eventOutputParameters": { <10>
+ "FirstProducer": { <11>
+ "carrierTechnologyParameters":{...}, <12>
+ "eventProtocolParameters":{...}, <13>
+ ... <14>
+ },
+ "SecondProducer": { <15>
+ "carrierTechnologyParameters":{...}, <16>
+ "eventProtocolParameters":{...}, <17>
+ ... <18>
+ }
+}
+----
+<1> input interface configuration, APEX input plugins
+<2> first input called `FirstConsumer`
+<3> carrier technology for plugin
+<4> event protocol for plugin
+<5> any other input configuration (e.g. event name filter, see below)
+<6> second input called `SecondConsumer`
+<7> carrier technology for plugin
+<8> event protocol for plugin
+<9> any other plugin configuration
+<10> output interface configuration, APEX output plugins
+<11> first output called `FirstProducer`
+<12> carrier technology for plugin
+<13> event protocol for plugin
+<14> any other plugin configuration
+<15> second output called `SecondProducer`
+<16> carrier technology for plugin
+<17> event protocol for plugin
+<18> any other output configuration (e.g. event name filter, see below)
+
+=== Event Filters
+
+APEX will always send an event after a policy execution is finished.
+For a successful execution, the event sent is the output event created by the policy.
+In case the policy does not create an output event, APEX will create a new event with all input event fields plus an additional field `exceptionMessage` with an exception message.
+
+There are situations in which this auto-generated error event might not be required or wanted:
+
+* when a policy failing should not result in an event send out via an output interface
+* when the auto-generated event goes back in an APEX engine (or the same APEX engine), this can create endless loops
+* the auto-generated event should go to a special output interface or channel
+
+All of these situations are supported by a filter option using a wildecard (regular expression) configuration on APEX I/O interfaces.
+The parameter is called `eventNameFilter` and the value are link:https://docs.oracle.com/javase/8/docs/api/java/util/regex/Pattern.html[Java regular expressions] (a link:http://www.vogella.com/tutorials/JavaRegularExpressions/article.html[tutorial]).
+The following code shows some examples:
+
+[source%nowrap,json]
+----
+"eventInputParameters": {
+ "Input1": {
+ "carrierTechnologyParameters" : {...},
+ "eventProtocolParameters":{...},
+ "eventNameFilter" : "^E[Vv][Ee][Nn][Tt][0-9]004$" <1>
+ }
+},
+"eventOutputParameters": {
+ "Output1": {
+ "carrierTechnologyParameters":{...},
+ "eventProtocolParameters":{...},
+ "eventNameFilter" : "^E[Vv][Ee][Nn][Tt][0-9]104$" <2>
+ }
+}
+----
diff --git a/services/services-engine/src/site-docs/adoc/fragments/config-service-parameters.adoc b/services/services-engine/src/site-docs/adoc/fragments/config-service-parameters.adoc
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@@ -0,0 +1,47 @@
+//
+// ============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)
+//
+
+== Engine Service Parameters
+
+The configuration provides a number of parameters to configure the engine.
+An example configuration with explanations of all options is shown below.
+
+[source%nowrap,json]
+----
+"engineServiceParameters" : {
+ "name" : "AADMApexEngine", // <1>
+ "version" : "0.0.1", // <2>
+ "id" : 45, // <3>
+ "instanceCount" : 4, // <4>
+ "deploymentPort" : 12345, // <5>
+ "policyModelFileName" : "examples/models/VPN/VPNPolicyModelJava.json", // <6>
+ "periodicEventPeriod": 1000, <7>
+ "engineParameters":{ <8>
+ "engineParameters":{...}, <9>
+ "contextParameters":{...} <10>
+ }
+}
+----
+<1> a name for the engine. The engine name is used to create a key in a runtime engine. An name matching the following regular expression can be used here: `[A-Za-z0-9\\-_\\.]+`
+<2> a version of the engine, use semantic versioning as explained here: link:http://semver.org/[Semantic Versioning]. This version is used in a runtime engine to create a version of the engine. For that reason, the version must match the following regular expression `[A-Z0-9.]+`
+<3> a numeric identifier for the engine
+<4> the number of threads (policy instances executed in parallel) the engine should use, use `1` for single threaded engines
+<5> the port for the deployment Websocket connection to the engine
+<6> the model file to load into the engine on startup (optional)
+<7> an optional timer for periodic policies, in milliseconds (a defined periodic policy will be executed every `X` milliseconds), not used of not set or `0`
+<8> engine parameters for plugin configurations (execution environments and context handling)
+<9> engine specific parameters, mainly for executor plugins
+<10> context specific parameters, e.g. for context schemas, persistence, etc.
+
+The model file is optional, it can also be specified via command line.
+In any case, make sure all execution and other required plug-ins for the loaded model are loaded as required.